KR20250146827A - Sound apparatus and vehicular apparatus comprising the same - Google Patents

Abstract

An acoustic device according to one or more embodiments of the present disclosure may include an enclosure having an interior space, and an acoustic generating module within the interior space of the enclosure. A rear surface of the enclosure may include an uneven portion.

Description

{SOUND APPARATUS AND VEHICULAR APPARATUS COMPRISING THE SAME}

The present specification relates to an acoustic device and a transport device including the same.

A vehicle may include an audio device that outputs sound based on audio signals output from a multimedia device such as a car audio system. For example, an audio device applied to a vehicle may include front speakers and rear speakers configured in a coil configuration.

Audio systems in vehicles have limitations in producing realistic, multi-channel or surround sound through the front and rear speakers. While increasing the number of speakers can produce surround sound, the size of the speakers, due to their coil design, and the spatial constraints within the vehicle, limit the number of speakers available.

The inventors of this specification, recognizing the above-mentioned problems, conducted various studies and experiments to improve the acoustic characteristics and/or sound pressure characteristics of vehicle acoustic devices. Through these studies and experiments, the inventors of this specification invented an acoustic device capable of improving the acoustic characteristics and/or sound pressure characteristics, and a transportation device including the same.

An object of the present invention is to provide an acoustic device and a transport device including the same, wherein acoustic characteristics and/or acoustic pressure characteristics can be improved.

An object of the present invention is to provide an acoustic device capable of outputting sound having a wide directivity angle and a transport device including the same.

An object of the present invention is to provide an acoustic device and a transport device including the same, wherein the acoustic characteristics and/or sound pressure characteristics can be improved by reducing the total harmonic distortion characteristics.

The problems to be solved according to the embodiments of this specification are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

An acoustic device according to one or more embodiments of the present disclosure may include an enclosure having an interior space, and an acoustic generating module within the interior space of the enclosure. A rear surface of the enclosure may include an uneven portion.

A transportation device according to one or more embodiments of the present disclosure may include an interior material exposed to an interior space, and at least one sound generating device disposed in the interior material and configured to output sound into the interior space. The at least one sound generating device may include a sound device. The sound device may include an enclosure having an interior space, and a sound generating module located in the interior space of the enclosure. The rear surface of the enclosure may include an uneven portion.

Specific details according to various examples of this specification other than the means of solving the problems mentioned above are included in the description and drawings below.

An acoustic device and a transport device including the same according to one or more embodiments of the present disclosure may have improved acoustic characteristics and/or sound pressure characteristics.

An acoustic device and a transport device including the same according to one or more embodiments of the present disclosure may have improved acoustic characteristics and/or sound pressure characteristics in a sound range including low-frequency sounds.

An acoustic device and a transport device including the same according to one or more embodiments of the present specification constitute a vibrating member including at least one hole, so that acoustic characteristics and/or sound pressure characteristics can be improved in a sound range including low-frequency sounds.

An acoustic device and a transport device including the same according to one or more embodiments of the present specification may have a signal supply member configured as one part with a vibration generating unit, thereby providing the effect of uni-materialization.

An acoustic device and a transport device including the same according to one or more embodiments of the present specification may have a protrusion and a connecting portion formed as one part, thereby providing the effect of a uni-materialization.

An acoustic device and a transport device including the same according to one or more embodiments of the present specification constitute a protective member in the acoustic device, so that acoustic characteristics and/or sound pressure characteristics can be further improved, a sound reproduction band can be expanded, and the acoustic device can be protected.

An acoustic device and a transportation device including the same according to one or more embodiments of the present specification constitute a connecting member between a vehicle interior and an enclosure, so that acoustic characteristics and/or sound pressure characteristics can be improved in a sound range including low-frequency sounds.

An acoustic device and a transport device including the same according to one or more embodiments of the present specification can output sound having a wide directivity angle, and can output sound having a wide directivity angle or three-dimensional sound.

An acoustic device and a transport device including the same according to one or more embodiments of the present specification may have a non-flat portion or non-flat structure formed at the rear of the enclosure, thereby reducing total harmonic distortion characteristics and improving acoustic characteristics and/or sound pressure characteristics.

The effects of this specification are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the technical idea of this specification belongs from the description below.

The accompanying drawings are intended to aid understanding of the embodiments of this specification and provide examples along with detailed descriptions. However, the technical features of the embodiments are not limited to specific drawings, and the features disclosed in each drawing may be combined to form new embodiments.
FIG. 1 is a drawing showing an acoustic device according to one embodiment of the present specification.
FIG. 2 is a drawing showing a vehicle acoustic device according to another embodiment of the present specification.
FIG. 3 is a perspective view showing an acoustic device according to one embodiment of the present specification.
Figure 4 is an exploded perspective view of an acoustic device according to one embodiment of the present specification.
FIG. 5 is a cross-sectional view taken along line I-I' shown in FIG. 3 according to one embodiment of the present specification.
FIG. 6 is a cross-sectional view taken along line II-II' shown in FIG. 3 according to one embodiment of the present specification.
FIG. 7 is a drawing showing an acoustic device according to another embodiment of the present specification.
FIG. 8 is a drawing showing an acoustic device according to another embodiment of the present specification.
FIG. 9 is a drawing showing an acoustic device according to another embodiment of the present specification.
FIG. 10 is a drawing showing an acoustic device according to another embodiment of the present specification.
FIG. 11 is an exploded perspective view of the acoustic device illustrated in FIG. 10 according to another embodiment of the present specification.
FIG. 12 is a cross-sectional view taken along line III-III' shown in FIG. 10 according to another embodiment of the present specification.
FIG. 13 is a cross-sectional view taken along line IV-IV' shown in FIG. 10 according to another embodiment of the present specification.
FIG. 14 is a drawing showing an acoustic device according to another embodiment of the present specification.
FIG. 15 is a drawing showing an acoustic device according to another embodiment of the present specification.
FIG. 16 is a cross-sectional view taken along line V-V' shown in FIG. 15 according to another embodiment of the present specification.
FIG. 17 is a cross-sectional view taken along line VI-VI' shown in FIG. 15 according to another embodiment of the present specification.
FIG. 18 is an exploded perspective view of the acoustic device illustrated in FIG. 15 according to another embodiment of the present specification.
FIG. 19 is another cross-sectional view taken along line V-V' shown in FIG. 15 according to another embodiment of the present specification.
FIG. 20 is another cross-sectional view taken along line VI-VI' shown in FIG. 15 according to another embodiment of the present specification.
FIG. 21 is another exploded perspective view of the acoustic device illustrated in FIG. 15 according to another embodiment of the present specification.
FIG. 22 is another cross-sectional view taken along line V-V' shown in FIG. 15 according to another embodiment of the present specification.
FIG. 23 is another cross-sectional view taken along line VI-VI' shown in FIG. 15 according to another embodiment of the present specification.
FIG. 24 is another exploded perspective view of the acoustic device illustrated in FIG. 15 according to another embodiment of the present specification.
FIG. 25 is a drawing showing an acoustic device according to another embodiment of the present specification.
FIG. 26 is a cross-sectional view taken along line VII-VII' shown in FIG. 25 according to another embodiment of the present specification.
FIG. 27 is a cross-sectional view taken along line VIII-VIII' shown in FIG. 25 according to another embodiment of the present specification.
FIG. 28 is another cross-sectional view taken along line VII-VII' shown in FIG. 25 according to another embodiment of the present specification.
FIG. 29 is another cross-sectional view taken along line VIII-VIII' shown in FIG. 25 according to another embodiment of the present specification.
FIG. 30 is another cross-sectional view taken along line VII-VII' shown in FIG. 25 according to another embodiment of the present specification.
FIG. 31 is a plan view showing a vibration member and a vibration device according to another embodiment of the present specification.
FIG. 32 is a drawing showing an acoustic device according to another embodiment of the present specification.
FIG. 33 is a cross-sectional view taken along line IX-IX' shown in FIG. 32 according to another embodiment of the present specification.
FIG. 34 is a drawing showing an acoustic device according to another embodiment of the present specification.
FIG. 35 is a cross-sectional view taken along line X-X' shown in FIG. 34 according to another embodiment of the present specification.
Fig. 36 is a drawing showing a joint according to another embodiment of the present specification.
FIG. 37 is a cross-sectional view taken along line XI-XI' shown in FIG. 36 according to one embodiment of the present specification.
FIG. 38 is a drawing showing a vibration generator of a vibration device according to one embodiment of the present specification.
FIG. 39 is a cross-sectional view of XII-XII' shown in FIG. 38 according to one embodiment of the present specification.
FIG. 40 is a cross-sectional view of XIII-XIII' shown in FIG. 38 according to an embodiment of the present specification.
Fig. 41 is a drawing showing a vibration unit according to another embodiment of the present specification.
Fig. 42 is a drawing showing a vibration unit according to another embodiment of the present specification.
Fig. 43 is a drawing showing a vibration generator of a vibration device according to another embodiment of the present specification.
FIG. 44 is a drawing showing a transport device according to one embodiment of the present specification.
FIG. 45 is a drawing showing a transport device according to one embodiment of the present specification.
Fig. 46 is a drawing showing a sound generating device placed on the loop of the transport device of Figs. 44 and 45.
Fig. 47 is a drawing showing a sound generating device arranged on the roof and seat of the transport device of Figs. 44 and 45.
Figure 48 is a drawing showing the sound output characteristics of an acoustic device according to an embodiment and experimental example of the present specification.
Figure 49 is a drawing showing the total harmonic distortion characteristics of an acoustic device according to an embodiment and experimental example of the present specification.
FIG. 50a is a drawing showing the directivity characteristics at 0 degrees and 30 degrees for an acoustic device according to an embodiment of the present specification.
Figure 50b is a drawing showing the directivity characteristics at 0 degrees and 30 degrees for an acoustic device according to an experimental example.
FIG. 51a is a drawing showing the directivity characteristics at 0 degrees and 60 degrees for an acoustic device according to an embodiment of the present specification.
Figure 51b is a drawing showing the directivity characteristics at 0 degrees and 60 degrees for an acoustic device according to an experimental example.
FIG. 52a is a drawing showing the directivity characteristics at 0 degrees and 80 degrees for an acoustic device according to an embodiment of the present specification.
Figure 52b is a drawing showing the directivity characteristics at 0 degrees and 80 degrees for an acoustic device according to an experimental example.
FIG. 53a is a diagram showing a polar pattern for a 2 kHz sound band output from an acoustic device according to an embodiment of the present specification.
Figure 53b is a diagram showing a polar pattern for a 2 kHz frequency range output from a coil-type speaker according to an experimental example.
FIG. 54a is a diagram showing a polar pattern for a 4 kHz sound band output from an acoustic device according to an embodiment of the present specification.
Figure 54b is a diagram showing a polar pattern for a 4 kHz frequency range output from a coil-type speaker according to an experimental example.
FIG. 55a is a diagram showing a polar pattern for a 6 kHz sound band output from an acoustic device according to an embodiment of the present specification.
Figure 55b is a diagram showing a polar pattern for a 6 kHz frequency range output from a coil-type speaker according to an experimental example.
FIG. 56a is a diagram showing a polar pattern for a sound band of 8 kHz output from an acoustic device according to an embodiment of the present specification.
Figure 56b is a diagram showing a polar pattern for a sound frequency range of 8 kHz output from a coil-type speaker according to an experimental example.
FIG. 57a is a diagram showing a polar pattern for a 10 kHz sound band output from an acoustic device according to an embodiment of the present specification.
Figure 57b is a diagram showing a polar pattern for a 10 kHz frequency range output from a coil-type speaker according to an experimental example.
FIG. 58a is a diagram showing a polar pattern for a 13 kHz sound band output from an acoustic device according to an embodiment of the present specification.
Figure 58b is a diagram showing a polar pattern for a 13 kHz frequency range output from a coil-type speaker according to an experimental example.
FIG. 59a is a diagram showing a polar pattern for a 16 kHz sound band output from an acoustic device according to an embodiment of the present specification.
Figure 59b is a diagram showing a polar pattern for a 16 kHz frequency range output from a coil-type speaker according to an experimental example.
FIG. 60a is a diagram showing a polar pattern for a 20 kHz sound band output from an acoustic device according to an embodiment of the present specification.
Figure 60b is a diagram showing a polar pattern for a 20 kHz frequency range output from a coil-type speaker according to an experimental example.
Figure 61a is a drawing showing the directivity of a coil-type speaker according to an experimental example.
FIG. 61b is a drawing showing the directivity of an acoustic device according to an embodiment of the present specification.

The advantages and features of this specification, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below, along with the accompanying drawings. However, this specification is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided solely to ensure the complete disclosure of this specification and to fully inform those skilled in the art of the invention of the scope of the invention.

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of this specification are illustrative and are not limited to the matters illustrated in this specification. Like reference numerals refer to like components throughout the specification. In addition, in describing this specification, if a detailed description of a related known technology is judged to unnecessarily obscure the gist of this specification, the detailed description thereof will be omitted. When "includes," "has," or "consists of" are used in this specification, other parts may be added unless "only" is used. When a component is expressed in the singular, it includes a plural unless specifically stated otherwise.

When interpreting a component, it is interpreted as including the error range even if there is no separate explicit description of the error range.

When describing a positional relationship, for example, when the positional relationship between two parts is described as "on", "above", "below", "next to", or "adjacent", there may be one or more other parts located between the two parts, unless, for example, "right", "directly", or "near" is used.

When describing a temporal relationship, if the temporal continuity is described as "after", "following", "next to", or "before", it can also include cases where it is not continuous, unless "immediately" or "directly" is used.

Although terms like "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Thus, a "first" component referred to below may also be a "second" component within the technical scope of this specification.

In describing components of this specification, terms such as first, second, A, B, (a), or (b) may be used. These terms are only intended to distinguish the components from other components, and do not limit the nature, order, sequence, or number of the components.

When a component is described as being "connected," "coupled," "connected," or "attached" to another component, it should be understood that the component may be directly connected, coupled, connected, or attached to that other component, but that other components may also be interposed between each component to which it may be connected, coupled, connected, or attached indirectly, unless otherwise expressly stated.

When a component or layer is described as "contacting," or "overlapping," another component or layer, it should be understood that the component or layer may directly contact or overlap the other component or layer, but that other components may also be interposed between each component that may indirectly contact or overlap the other component or layer, unless specifically stated otherwise.

"At least one" should be understood to include any combination of one or more of the associated components. For example, "at least one of the first, second, and third components" could be understood to include any combination of two or more of the first, second, and third components, as well as any combination of two or more of the first, second, and third components.

“First direction”, “second direction”, “third direction”, “X-axis direction”, “Y-axis direction” and “Z-axis direction” should not be interpreted as merely geometric relationships in which the relationship between them is perpendicular to each other, but may mean a wider directionality within the scope in which the configuration of this specification can function functionally.

The individual features of the various embodiments of this specification may be partially or wholly combined or combined with each other, and may be technically linked and operated in various ways, and each embodiment may be implemented independently of each other or may be implemented together in a related relationship.

Hereinafter, embodiments of the present specification will be described with reference to the attached drawings and examples. The scale of the components illustrated in the drawings is different from the actual scale for convenience of explanation, and is therefore not limited to the scale illustrated in the drawings.

FIG. 1 is a drawing illustrating an acoustic device according to one embodiment of the present specification. For example, FIG. 1 illustrates an acoustic device for a vehicle according to one embodiment of the present specification.

Referring to FIG. 1, an acoustic device (30) according to one embodiment of the present specification may be placed or mounted inside a vehicle (10) to output sound (S) toward an interior space (IS) of the vehicle (10) (or transportation device).

The vehicle (10) may be a transportation device including one or more seats and one or more windows. For example, the vehicle (10) may include an automobile, a train, a ship, or an aircraft, but the embodiments of the present specification are not limited thereto.

A vehicle (10) according to one embodiment of the present specification may include a main structure (110).

The main structure (110) of the vehicle (10) may include a main frame, a sub-frame, a side frame, a door frame, an underframe, a seat frame, etc., but the embodiments of the present specification are not limited thereto. For example, the main structure (110) may be a body, a vehicle structure, a frame structure, etc., but the embodiments of the present specification are not limited thereto.

A vehicle (10) according to one embodiment of the present specification may further include an exterior material (120).

The exterior material (120) of the vehicle (10) may be configured to cover the main structure (110). For example, the exterior material (120) may be configured to cover the exterior of the main structure (110). In the following description, the exterior material (120) may be a vehicle exterior material (120), and these may be used interchangeably.

The exterior material (120) of the vehicle (10) may include a hood panel, a front fender panel, a dash panel, a filler panel, a trunk panel, a roof panel (or ceiling), a floor panel, a door inner panel, and a door outer panel, but the embodiments of the present specification are not limited thereto.

An exterior material (120) according to one embodiment of the present specification may include at least one of a flat portion and a curved portion (or a bent portion). For example, the exterior material (120) may have a structure corresponding to the structure of the corresponding main structure (110), or may have a structure different from the structure of the corresponding main structure (110).

A vehicle (10) according to one embodiment of the present specification may further include a vehicle interior material (130). In the following description, the vehicle interior material (130) may be an interior material (130), or may be used in combination.

The vehicle interior material (130) may include all components constituting the interior of the vehicle (10) or all components arranged in the interior space (IS) of the vehicle (10). For example, the vehicle interior material (130) may be an interior material or an interior finish material of the vehicle (10), but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, a vehicle interior material (130) may be configured to cover at least one of a main structure (110) and an exterior material (120) in an interior space (IS) of a vehicle (10). For example, the interior material (130) may be configured to be exposed to the interior space (IS) of the vehicle (10) while covering at least one of a main structure (110) and an exterior material (120) in the interior space (IS) of the vehicle (10).

A vehicle interior material (130) according to one embodiment of the present specification may be configured to be exposed to the interior and/or interior space (IS) of the vehicle (10) in the interior and/or interior space (IS) of the vehicle (10). For example, the vehicle interior material (130) may be configured to cover one or more surfaces (or interior surfaces) of a main frame (or vehicle body), a side frame (or side body), a door frame (or door body), a handle frame (or steering hub), and a seat frame that are exposed to the interior space (IS) of the vehicle (10).

The vehicle interior material (130) according to one embodiment of the present specification may include a dashboard, a pillar interior material (or pillar trim), a floor interior material (or a floor carpet), a roof interior material (or a headliner), a door interior material (or a door trim), a handle interior material (or a steering cover), a seat interior material, a rear package interior material (or a rear seat shelf), an overhead console (or an interior lighting interior material), a rear view mirror, a glove box, and a sun visor, but the embodiments of the present specification are not limited thereto.

The vehicle interior material (130) according to one embodiment of the present specification may include one or more of metal, wood, rubber, plastic, glass, fiber, cloth, paper, mirror, leather, and carbon, but the embodiments of the present specification are not limited thereto. The vehicle interior material (130) made of a plastic material may be an injection molded product realized by an injection molding process using a thermoplastic resin or a thermosetting resin, but the embodiments of the present specification are not limited thereto. The vehicle interior material (130) made of a fiber material may include at least one or more of a plastic composite fiber, a carbon fiber (or an aramid fiber), and a natural fiber, but the embodiments of the present specification are not limited thereto. The vehicle interior material (130) made of a fiber material may be a fabric sheet, a knitted sheet, a non-woven fabric, or the like, but the embodiments of the present specification are not limited thereto. For example, the paper may be cone paper for speakers. For example, the cone paper may be pulp or foamed plastic, but the embodiments of the present specification are not limited thereto. The vehicle interior material (130) made of leather may include natural leather or artificial leather, but the embodiments of the present specification are not limited thereto.

The vehicle interior material (130) according to one embodiment of the present specification may include at least one of a flat portion and a curved portion (or a bent portion). For example, the vehicle interior material (130) may have a structure corresponding to the structure (or inner surface structure) of the corresponding main structure (110), or may have a structure different from the structure of the corresponding main structure (110).

According to one embodiment of the present specification, the acoustic device (30) may be placed in the vehicle interior material (130). The acoustic device (30) may vibrate (or directly vibrate) the vehicle interior material (130) to generate sound (S) according to the vibration of the vehicle interior material (130). For example, the acoustic device (30) may be configured to vibrate the vehicle interior material (130) to output sound (S) toward the interior and/or interior space (IS) of the vehicle (10). Through this, the vehicle interior material (130) may be used as an acoustic diaphragm. The vehicle interior material (130) may be a diaphragm, an acoustic diaphragm, or a sound generating plate for outputting sound (S). For example, the vehicle interior material (130) may have a larger size than the acoustic device (30), but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the acoustic device (30) may be disposed in at least one of a dashboard, a pillar interior, a floor interior, a roof interior, a door interior, a steering wheel interior, and a seat interior, or disposed in or connected (or coupled) to at least one of a rear package interior, an overhead console, a rear view mirror, a glove box, and a sun visor. For example, the acoustic device (30) may be configured to vibrate (or directly vibrate) at least one of a dashboard, a pillar interior, a floor interior, a roof interior, a door interior, a steering wheel interior, a seat interior, a rear package interior, an overhead console, a rear view mirror, a glove box, and a sun visor to output sound (S) toward the interior and/or interior space (IS) of the vehicle (10).

A vehicle (10) according to one embodiment of the present disclosure may include one or more acoustic devices (30) positioned or connected to at least one area (or portion) of a vehicle interior material (130). The one or more acoustic devices (30) may vibrate at least one area (or portion) of the vehicle interior material (130) to output realistic sound (S) and/or three-dimensional sound including multi-channels toward an interior space (IS) of the vehicle (10).

According to one embodiment of the present specification, the acoustic device (30) may be configured in a region between the vehicle interior material (130) and the main structure (110) or in a region between the vehicle interior material (130) and the exterior material (120). The acoustic device (30) is disposed in a region between the vehicle interior material (130) and the main structure (110) or in a region between the vehicle interior material (130) and the exterior material (120), and may output sound (S) by indirectly or directly vibrating at least one of the region between the vehicle interior material (130) and the main structure (110) or the region between the vehicle interior material (130) and the exterior material (120).

According to one embodiment of the present specification, the acoustic device (30) may be disposed in one or more of the area (or first area) between the main structure (110) and the exterior material (120), the area (or second area) between the main structure (110) and the vehicle interior material (130), the exterior material (120), and the vehicle interior material (130). For example, the acoustic device (30) may be disposed in one or more of the area (or first area) between the main structure (110) and the exterior material (12), the area (or second area) between the main structure (110) and the vehicle interior material (130), the exterior material (120), and the vehicle interior material (130), and may be configured to output sound. For example, the sound device (30) is placed in one or more of the area between the main structure (110) and the exterior material (120) (or the first area), the area between the main structure (110) and the vehicle interior material (130) (or the second area), the exterior material (120), and the vehicle interior material (130), and can output sound by indirectly or directly vibrating one or more of the main structure (110), the exterior material (120), and the vehicle interior material (130).

According to one embodiment of the present specification, the acoustic device (30) may be configured to output sound between the exterior material (120) and the interior material (130) of the vehicle (10). For example, the acoustic device (30) may be disposed in at least one of a region (or a third region) between the exterior material (120) and the interior material (130), the exterior material (120), and the interior material (130). For example, the acoustic device (30) may be disposed between the exterior material (120) and the interior material (130), and may indirectly or directly vibrate at least one of the exterior material (120) and the interior material (130) to output sound. For example, the sound device (30) is connected or coupled to at least one of the exterior material (120) and the vehicle interior material (130) between the exterior material (120) and the vehicle interior material (130), and can output sound by indirectly or directly vibrating at least one of the exterior material (120) and the vehicle interior material (130). For example, at least one of the exterior material (120) and the vehicle interior material (130) can output sound (S) according to the driving (or vibration or displacement) of at least one sound device (30).

According to one embodiment of the present specification, at least one of the exterior material (120) and the interior material (130) of the vehicle (10) may be a diaphragm, an acoustic diaphragm, or a sound generating plate for outputting sound (S). For example, since each of the exterior material (120) and the interior material (130) for outputting sound (S) has a larger size (or area) than the acoustic device (30), it may function as a large-area diaphragm, an acoustic diaphragm, or a sound generating plate, thereby improving the acoustic characteristics and/or sound pressure characteristics of a sound range including a low-pitched sound range generated by the acoustic device (30). For example, the acoustic frequency of the low-pitched sound range may be 300 Hz or less, 400 Hz or less, or 500 Hz or less, but the embodiments of the present specification are not limited thereto.

FIG. 2 is a drawing illustrating a vehicle acoustic device according to another embodiment of the present disclosure. In particular, FIG. 2 illustrates a modified vehicle interior (130) in which the acoustic device described with reference to FIG. 1 is positioned. Accordingly, in the following description, any redundant description of components other than the vehicle interior (130) may be omitted or simplified.

Referring to FIG. 2, an acoustic device (30) according to another embodiment of the present specification can vibrate a vehicle interior material (130) to output sound (S).

The vehicle interior material (130) according to one embodiment of the present specification may include one or more materials of metal, wood, rubber, plastic, glass, fiber, cloth, paper, mirror, leather, and carbon, but the embodiments of the present specification are not limited thereto.

A vehicle interior material (130) according to another embodiment of the present disclosure may include a base member (131) and a skin member (133). For example, the base member (131) may be an injection-molded product, a first interior material, an inner interior material, or a rear interior material, but the embodiments of the present disclosure are not limited thereto. The skin member (133) may be a second interior material, an outer interior material, a front interior material, an outer skin material, a reinforcing member, or a decorative member, but the embodiments of the present disclosure are not limited thereto.

The base member (131) may be made of a plastic material. The base member (131) according to one embodiment of the present specification may include an injection-molded product. For example, the base member (131) may be an injection-molded product implemented by an injection process using a thermoplastic resin or a thermosetting resin, but the embodiments of the present specification are not limited thereto. The vehicle interior material (130) or the base member (131) may be configured to cover the interior of the vehicle (10). For example, the vehicle interior material (130) or the base member (131) may be configured to cover at least one of the main structure (110) and the exterior material (120) in the interior space (IS) of the vehicle (10). For example, the vehicle interior material (130) or the base member (131) may be configured to cover at least one surface (or interior surface) of the main frame, the side frame, the door frame, and the handle frame exposed to the interior space (IS) of the vehicle (10).

The base member (131) may include at least one of a flat portion and a curved portion. For example, the base member (131) may have a structure corresponding to the structure (or rear structure) of the corresponding main structure (110), or may have a structure different from the structure of the corresponding main structure (110).

The skin member (133) may be disposed on the base member (131). For example, the skin member (133) may be disposed to cover the base member (131). The skin member (133) may be configured to cover the base member (131) in the interior and/or interior space (IS) of the vehicle (10) while being exposed to the interior and/or interior space (IS) of the vehicle (10). For example, the skin member (133) may be disposed on or coupled to the front surface (or interior surface) of the base member (131) that is exposed to the interior space (IS) of the vehicle (10).

According to one embodiment of the present specification, the vehicle interior material (130) or skin member (133) may include one or more materials selected from the group consisting of plastic, glass, fiber, leather, cloth, rubber, mirror, wood, paper, carbon, and metal, but the embodiments of the present specification are not limited thereto. For example, the skin member (133) may be a fiber material. For example, the fiber skin member (133) may include at least one or more of synthetic fiber, carbon fiber (or aramid fiber), and natural fiber, but the embodiments of the present specification are not limited thereto. For example, the fiber skin member (133) may be a fabric sheet, a knitted sheet, or a non-woven fabric, but the embodiments of the present specification are not limited thereto. For example, the fiber skin member (133) may be a fabric member, but the embodiments of the present specification are not limited thereto.

Synthetic fibers may include polyolefin fibers, which are thermoplastic resins and are environmentally friendly materials that emit relatively few hazardous substances. For example, polyolefin fibers may include polyethylene fibers, polypropylene fibers, or polyethylene terephthalate fibers, but the embodiments of the present specification are not limited thereto. Polyolefin fibers may be fibers of a single resin or fibers with a core-shell structure, but the embodiments of the present specification are not limited thereto. Natural fibers may be any one or a blend of two or more of jute fibers, kenaf fibers, abaca fibers, coconut fibers, and wood fibers, but the embodiments of the present specification are not limited thereto.

The acoustic device (30) may be covered by a vehicle interior material (130). The acoustic device (30) may be configured to vibrate the vehicle interior material (130) including the base member (131) and the skin member (133) to output sound (S) toward the interior and/or interior space (IS) of the vehicle (10).

An acoustic device (30) according to another embodiment of the present specification can output sound (S) toward an interior space (IS) by using a vehicle interior material (130) as an acoustic diaphragm, can output realistic sound (S) including multi-channel and/or three-dimensional sound toward the interior space (IS) of the vehicle (10), and can output sound and/or three-dimensional sound having a wide directivity angle.

According to another embodiment of the present specification, the acoustic device (30) may be configured to be surrounded by an enclosure. A space is provided between the acoustic device (30) and the enclosure, and sound (or sound pressure) may be output according to the vibration of the vehicle interior material (130) by the air between the acoustic device (30) and the enclosure. However, there is a problem in that low-frequency sounds are not output, and the number of peaks and dips generated in the reproduction frequency band of the sound (or sound pressure) generated according to the vibration of the vehicle interior material (130) increases, and there is a problem in that the maximum sound pressure and the minimum sound pressure generated in the reproduction frequency band of the sound (or sound pressure) generated according to the vibration of the vehicle interior material (130) increase, thereby reducing the flatness of the sound pressure. A peak may be a phenomenon in which the sound pressure jumps at a specific frequency, and a dip may be a phenomenon in which the sound generation of a specific frequency is suppressed, resulting in the generation of a low sound pressure. Sound pressure flatness can be the difference between the highest and lowest sound pressure levels in a particular frequency band.

The inventors of this specification have conducted extensive research and experiments to develop an acoustic device capable of increasing (or improving) the sound pressure characteristics of sound, including low- and mid-frequency ranges, and a transportation device including the same. Through extensive research and experiments, they have invented an acoustic device capable of improving the sound pressure characteristics of sound, including low- and mid-frequency ranges, and a transportation device including the same. This is described below.

Fig. 3 is a perspective view showing an acoustic device according to one embodiment of the present disclosure. Fig. 4 is an exploded perspective view of an acoustic device according to one embodiment of the present disclosure. Fig. 5 is a cross-sectional view taken along line II' shown in Fig. 3 according to one embodiment of the present disclosure. Fig. 6 is a cross-sectional view taken along line II-II' shown in Fig. 3 according to one embodiment of the present disclosure.

Referring to FIGS. 3 to 6, an acoustic device (30) (or an acoustic device for a vehicle) according to one embodiment of the present disclosure may be configured to vibrate a vibrating object or a vehicle structure. For example, the acoustic device (30) may be a sound generating device, an acoustic output device, a speaker device, a car audio device, or an audio device, but the embodiments of the present disclosure are not limited thereto.

The acoustic device (30) may be configured to be connected (or coupled) to a vibrating object or vehicle structure. For example, the acoustic device (30) may be configured to be disposed (or connected) to a portion of any one of the main structure (110), the exterior material (120), and the vehicle interior material (130) illustrated in FIG. 1 or 2 to generate (or output) sound. For example, the acoustic device (30) may be configured to generate (or output) sound by vibrating any one of the main structure (110), the exterior material (120), and the vehicle interior material (130) illustrated in FIG. 1 or 2.

An acoustic device (30) according to one embodiment of the present specification may include an enclosure (310) and an acoustic generation module (330).

The enclosure (310) may be configured to support the sound generating module (330) and output sound generated by driving (or vibrating) the sound generating module (330). For example, the enclosure (310) may be configured to surround or cover the sound generating module (330). For example, the enclosure (310) may be configured to support the sound generating module (330) and surround the sound generating module (330). For example, the enclosure (310) may be configured to accommodate (or house) the sound generating module (330). For example, the enclosure (310) may be a housing, a case, an outer case, a case member, a housing member, a cabinet, a sealing member, a sealing cap, a sealing box, or a sound box, but the embodiments of the present specification are not limited thereto.

An enclosure (310) according to one embodiment of the present specification may include one or more materials of a metal material or a non-metal material (or a composite non-metal material), but the embodiments of the present specification are not limited thereto. For example, the enclosure (310) may include one or more materials of a metal material, a plastic material, a carbon material, and a wood material, but the embodiments of the present specification are not limited thereto. For example, the enclosure (310) may be formed of a metal material such as aluminum, or a plastic material such as a plastic or a styrene material, but the embodiments of the present specification are not limited thereto. For example, the styrene material may be an ABS material. The ABS material may be acrylonitrile, butadiene, and styrene.

An enclosure (310) according to one embodiment of the present specification may have a rectangular shape, but embodiments of the present specification are not limited thereto. For example, the enclosure (310) may have a rectangular shape having a long side and a short side. For example, in the enclosure (310), the long side may be parallel to a first direction (X), and the short side may be parallel to a second direction (Y) intersecting the first direction (X).

An enclosure (310) according to one embodiment of the present specification may include an internal space (313). The internal space (313) may be configured to accommodate (or house) a sound generating module (330). For example, the internal space (313) may be a receiving space, a storage space, a gap space, an air space, a vibration space, an acoustic space, a resonance chamber, or a sealed space, and the embodiments of the present specification are not limited thereto.

The sound generating module (330) may be in the internal space (313) of the enclosure (310). The sound generating module (330) may be configured to be accommodated (or housed) in the internal space (313) of the enclosure (310). The sound generating module (330) may be configured to generate sound (or sound pressure or sound waves) in the internal space (313) of the enclosure (310). For example, the sound generating module (330) may be a sound generating unit, a sound generating member, a sound reproduction module, a sound reproduction unit, a car audio module, a car audio unit, a speaker module, or a speaker unit, but the embodiments of the present specification are not limited thereto.

An enclosure (310) according to one embodiment of the present specification may be connected (or coupled) to a vibrating object or vehicle structure. For example, the enclosure (310) may be placed (or coupled) to a portion of any one of the main structure (110), the exterior material (120), and the vehicle interior material (130) illustrated in FIG. 1 or FIG. 2 .

An enclosure (310) according to one embodiment of the present specification may include a first side (310a) and a second side (310b).

The first surface (310a) of the enclosure (310) may be a connecting surface that is connected (or coupled) to a vibrating object or a vehicle structure. For example, the first surface (310a) of the enclosure (310) may be a rear surface, a lower surface, a connecting surface, a coupling surface, or a mounting surface. In the following description, the first surface (310a) of the enclosure (310) is collectively referred to as the "rear surface (310a) of the enclosure (310)."

The second side (310b) of the enclosure (310) may be a side opposite to the first side (310a). For example, the second side (310b) of the enclosure (310) may be a front side or an upper side.

The rear surface (310a) of the enclosure (310) may be configured as an uneven portion or uneven structure that can maximize the contact area with the vibrating object (or vehicle structure). For example, the rear surface (310a) of the enclosure (310) may be configured to have a full-surface contact structure (or full-surface joining structure) with the vibrating object (or vehicle structure). For example, the uneven portion or uneven structure may be configured to include a curved structure, a round structure, or a concave structure, but the embodiments of the present specification are not limited thereto. For example, the uneven portion or uneven structure may be configured to include an inclined structure, but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the end of the uneven portion connected to the short side of the enclosure (310) may be aligned with the short side of the enclosure (310). For example, with respect to the first direction (X), the end of the uneven portion may be connected or directly connected without being spaced apart from the outer wall of the short side of the enclosure (310). For example, the corner portion between the end of the uneven portion and the short side of the enclosure (310) may be configured to be pointed. For example, the corner portion between the end of the uneven portion and the short side of the enclosure (310) may be configured to be pointed without including a curved surface and/or a flat surface.

Since the rear surface (310a) of the enclosure (310) according to one embodiment of the present specification includes a non-flat portion or a non-flat structure, when the rear surface (310a) of the enclosure (310) comes into contact with (or is connected to) a curved surface (or curved portion) of a vibrating object (or vehicle structure), the contact area between the rear surface (310a) of the enclosure (310) and the vibrating object (or vehicle structure) can be maximized. For example, the rear surface (310a) of the enclosure (310) and the vibrating object (or vehicle structure) can have a full-surface contact structure (or a full-surface coupling structure). For example, the rear surface (310a) of the enclosure (310) and the vibrating object (or vehicle structure) can have a full-surface contact structure (or a full-surface coupling structure) without a non-contact portion (or a non-contact area).

According to one embodiment of the present specification, an enclosure (310) connected to (or mounted on) a vibrating object (or vehicle structure) can vibrate the vibrating object (or vehicle structure) according to the driving (or vibration or displacement) of a sound generating module (330), whereby the vibrating object (or vehicle structure) can vibrate according to the vibration of the enclosure (310) and generate (or output) sound.

According to one embodiment of the present specification, unnecessary vibration may be generated depending on the contact structure (or contact condition) between the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and the vibrating object (or vehicle structure). For example, when the contact structure (or contact condition) between the rear surface (310a) of the enclosure (310) and the vehicle structure has a partial contact structure (or partial contact condition) including a non-contact portion (or non-contact area), unnecessary vibration may be generated between the enclosure (310) and the vehicle structure.

If unwanted vibration between the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and the vibrating object (or vehicle structure) causes abnormal noise (rub and buzz) or noise, the total harmonic distortion (THD) increases when the vehicle structure vibrates. For example, when the vibrating object (or vehicle structure) vibrates, excessively high vibration (peak vibration) may be generated due to mutual overlap or excessively low vibration (dip vibration) may be generated due to mutual cancellation, thereby deteriorating sound pressure characteristics and sound quality characteristics. For example, if a non-contact portion (or non-contact area) exists between the rear surface (310a) of the enclosure (310) and the vehicle structure, excessive noise (rub and buzz) or noise generated in the non-contact portion (or non-contact area) may cause the total harmonic distortion characteristics to increase, thereby deteriorating sound pressure characteristics and sound quality characteristics.

Total harmonic distortion characteristics refer to the non-input signal appearing in the output due to the non-linearity of an audio device such as a speaker, and is a method of representing the non-linearity of an audio device. For example, when a pure tone (or pure sound) is input to an audio device, harmonic distortion occurs, where harmonics that are integer multiples of the pure tone, such as 2x, 3x, or 4x, appear in the output. Harmonic distortion can occur when a sound source signal exceeding the input limit of the audio device is input and the waveform is clipped, and the more harmonic components there are, the higher the total harmonic distortion characteristic value becomes, which can mean that the waveform is distorted more severely.

Total harmonic distortion characteristics can be expressed as the ratio of the sum of the RMS values of all harmonics to the RMS (Root Mean Square) value of the fundamental wave. For example, total harmonic distortion characteristics can be expressed as the percentage (%) of frequencies other than 1 kHz generated when a 1 kHz signal is input. The higher the total harmonic distortion characteristic value, the more harmonic components there are, and a higher total harmonic distortion characteristic value can mean that the waveform is more distorted.

According to an acoustic device (30) according to one embodiment of the present specification, since the rear surface (310a) of the enclosure (310) includes a non-flat portion or a non-flat structure, unnecessary vibration occurring between the enclosure (310) or the rear surface (310a) of the enclosure (310) and a vibrating object (or vehicle structure) can be prevented, so that the total harmonic distortion characteristic can be reduced, and the acoustic characteristics and/or sound pressure characteristics can be improved.

The rear surface (310a) of the enclosure (310) according to one embodiment of the present specification may include uneven portions (311r1, 311r2). For example, the rear surface (310a) of the enclosure (310) may include a plurality of uneven portions (311r1, 311r2) and a flat portion (311r3).

The plurality of uneven portions (311r1, 311r2) may be configured to include an uneven surface. For example, the plurality of uneven portions (311r1, 311r2) may be configured between one side and the other side of the rear surface (310a) of the enclosure (310) that are parallel to each other with respect to the center of the rear surface (310a) of the enclosure (310). For example, the plurality of uneven portions (311r1, 311r2) may be configured between one side and the other side that are parallel to each other with respect to the center of the rear surface (310a) of the enclosure (310) with respect to the first direction (X).

A plurality of uneven portions (311r1, 311r2) may be concavely configured on the rear surface (310a) of the enclosure (310). The plurality of uneven portions (311r1, 311r2) may be concavely configured on the rear surface (310a) of the enclosure (310) to have a preset curvature. For example, each of the plurality of uneven portions (311r1, 311r2) may be configured between an edge portion of the rear surface (310a) of the enclosure (310) and a center portion of the enclosure (310) to have a preset curvature. For example, each of the plurality of uneven portions (311r1, 311r2) may be concavely configured between an edge portion of the rear surface (310a) of the enclosure (310) and a center portion of the enclosure (310) to have a preset curvature. The plurality of non-flat portions (311r1, 311r2) may have a symmetrical structure with respect to the center of the enclosure (310). For example, the plurality of non-flat portions (311r1, 311r2) may be configured to be symmetrical left and right with respect to the first direction (X) and the center of the enclosure (310), but the embodiments of the present specification are not limited thereto. For example, each of the plurality of non-flat portions (311r1, 311r2) may be a curved portion, a concave portion, a concave surface, or a non-flat surface, but the embodiments of the present specification are not limited thereto.

The flat portion (311r3) may be configured to include a flat structure, a planar structure, or a plate structure. The flat portion (311r3) may be configured between a plurality of non-flat portions (311r1, 311r2). For example, the flat portion (311r3) may be configured to have a flat surface structure or a planar structure between a plurality of non-flat portions (311r1, 311r2). For example, the flat portion (311r3) may be a flat portion or a flat surface, but the embodiments of the present specification are not limited thereto.

The rear surface (310a) of the enclosure (310) according to one embodiment of the present specification may include a first region (A1), a second region (A2), and a third region (A3). For example, the rear surface (310a) of the enclosure (310) may include a first region (A1), a second region (A2), and a third region (A3) with respect to the first direction (X).

The first region (or first rear region) (A1) may include one side of the rear surface (310a) of the enclosure (310). The second region (or second rear region) (A2) may include the other side of the rear surface (310a) of the enclosure (310). The third region (A3) may include an area between the first region (A1) and the second region (A2). The third region (or third rear region) (A3) may include a central portion of the rear surface (310a) of the enclosure (310).

According to one embodiment of the present specification, the first region (A1) may include a region between a first side (or first side wall) of the rear surface (310a) of the enclosure (310) and a third region (A3). The second region (A2) may include a region between a second side (or second side wall) opposite to the first side of the rear surface (310a) of the enclosure (310) and the third region (A3).

The rear surface (310a) of the enclosure (310) according to one embodiment of the present specification may include a first uneven portion (311r1), a second uneven portion (311r2), and a flat portion (311r3).

The first uneven portion (311r1) may be or may be configured in the first area (A1) of the rear surface (310a) of the enclosure (310). For example, the first uneven portion (311r1) may be configured in the first area (A1) of the rear surface (310a) of the enclosure (310) to include a curved structure, a round structure, a concave structure, or an inclined structure. For example, the first uneven portion (311r1) may be configured concavely in the first area (A1) of the rear surface (310a) of the enclosure (310). For example, the first uneven portion (311r1) may be configured concavely in the first area (A1) of the rear surface (310a) of the enclosure (310) to have a preset curvature. For example, the first uneven portion (311r1) and the vibrating object (or vehicle structure) may have a full-surface contact structure (or full-surface coupling structure). For example, the first uneven portion (311r1) and the vibrating object (or vehicle structure) may have a full-surface contact structure (or full-surface coupling structure) without a non-contact portion (or non-contact area).

The second uneven portion (311r2) may be or may be configured in the second area (A2) of the rear surface (310a) of the enclosure (310). For example, the second uneven portion (311r2) may be configured in the second area (A2) of the rear surface (310a) of the enclosure (310) to include a curved structure, a round structure, a concave structure, or an inclined structure. For example, the second uneven portion (311r2) may be configured concavely in the second area (A2) of the rear surface (310a) of the enclosure (310). For example, the second uneven portion (311r2) may be configured concavely in the second area (A2) of the rear surface (310a) of the enclosure (310) to have a preset curvature. For example, the second uneven portion (311r2) and the vibrating object (or vehicle structure) may have a full-surface contact structure (or full-surface coupling structure). For example, the second uneven portion (311r2) and the vibrating object (or vehicle structure) may have a full-surface contact structure (or full-surface coupling structure) without a non-contact portion (or non-contact area).

The flat portion (311r3) may be located or configured in the third area (A3) of the rear surface (310a) of the enclosure (310). For example, the flat portion (311r3) may be configured flat in the third area (A3) of the rear surface (310a) of the enclosure (310). For example, the flat portion (311r3) and the vibrating object (or vehicle structure) may have a full-surface contact structure (or full-surface coupling structure). For example, the flat portion (311r3) and the vibrating object (or vehicle structure) may have a full-surface contact structure (or full-surface coupling structure) without a non-contact portion (or non-contact area).

An enclosure (310) according to one embodiment of the present specification may include one or more enclosures (or enclosure members) (311, 312). For example, the enclosure (310) may include a first enclosure (311) and a second enclosure (312).

The first enclosure (311) (or enclosure or first enclosure member) may be configured on a first side (or rear side or bottom side) of the sound generating module (330). The first enclosure (311) may be configured to cover the first side of the sound generating module (330). For example, the first enclosure (311) may be configured to cover at least a portion of the first side of the sound generating module (330). The first enclosure (311) may be configured to support a portion of the sound generating module (330). For example, the first enclosure (311) may be configured to support the first side or an edge portion of the first side of the sound generating module (330). For example, the first enclosure (311) may be configured to be connected or coupled with a portion of the sound generating module (330).

The first enclosure (311) may include short sides and long sides. For example, the first enclosure (311) may have a rectangular shape having short sides and long sides. For example, the first enclosure (311) may include a first short side (311b1) and a second short side (311b2) that are parallel to each other, and a first long side (311b3) and a fourth short side (311b4) that are parallel to each other between the first short side (311b1) and the second short side (311b2).

A first enclosure (311) according to one embodiment of the present specification may include a first plate (311a) and a first side wall (311b).

A first plate (or plate) (311a) may be configured on a first surface of a sound generating module (330). The first plate (311a) may be configured to cover the first surface of the sound generating module (330). The first plate (311a) may be arranged or configured to be spaced apart from the first surface of the sound generating module (330). For example, the first plate (311a) may include a first area (A1), a second area (A2), and a third area (A3) with respect to the first direction (X).

The first plate (311a) may include a first surface (311i) and a second surface (311r) opposite to the first surface (311i). The first surface (311i) of the first plate (311a) may be spaced apart from the sound generating module (330) or may face the sound generating module (330). For example, the first surface (311i) of the first plate (311) may be a front surface or an inner surface. The second surface (311r) of the first plate (311a) may be connected (or coupled) to a vibrating object or a vehicle structure. For example, the second surface (311r) of the first plate (311a) may be a rear surface, an outer surface, a connecting surface, or a joining surface. For example, the second surface (311r) of the first plate (311a) may include a first region (A1), a second region (A2), and a third region (A3) with respect to the first direction (X). For example, the second surface (311r) of the first plate (311a) may include a non-flat structure.

At least a portion of the first plate (311a) may be flexible. At least a portion of the first plate (311a) may be configured to be bendable. For example, at least a portion of the first plate (311a) may be configured to be elastically deformed along the thickness direction (Z) of the enclosure (310).

The first side wall (or side wall) (311b) may be connected to an edge portion of the first plate (311a). For example, the first side wall (311b) may be connected perpendicularly to an edge portion of the first plate (311a). For example, the first side wall (311b) may be connected perpendicularly to a first edge portion (or inner edge portion) of the first plate (311a) facing the first side of the sound generating module (330). The first side wall (311b) may be configured to support a portion of the sound generating module (330). For example, the first side wall (311b) may be configured to be connected or coupled with a portion of the sound generating module (330). For example, the first side wall (311b) may include a first short side (311b1), a second short side (311b2), a first long side (311b3), and a second long side (311b4) of the first enclosure (311).

The first side wall (311b) may be arranged in an area between the first surface of the sound generating module (330) and the first plate (311a). The first side wall (311b) may provide a space (313a) on the first surface (311i) of the first enclosure (311) or the first surface (311i) of the first plate (311a). As a result, the first surface of the sound generating module (330) may be spaced apart from the first surface (311i) of the first plate (311a) by the first side wall (311b).

A first enclosure (311) according to one embodiment of the present specification may include an uneven portion. The first enclosure (311) may further include a plurality of uneven portions (311r1, 311r2) and a flat portion (311r3). For example, the first enclosure (311) may further include a first uneven portion (311r1), a second uneven portion (311r2), and a flat portion (311r3).

The first uneven portion (311r1) may be located on or configured on one side of the second surface (311r) of the first plate (311a). For example, the first uneven portion (311r1) may be located on or configured in the first area (A1) of the second surface (311r) of the first plate (311a). For example, the first uneven portion (311r1) may be located on or configured in the first area (A1) of the second surface (311r) of the first plate (311a). The first uneven portion (311r1) may be configured to include an uneven structure in the first area (A1) of the second surface (311r) of the first plate (311a). For example, the first uneven portion (311r1) may be configured as a curved structure, a round structure, or a concave structure to have a preset curvature in the first area (A1) of the second surface (311r) of the first plate (311a), but the embodiments of the present specification are not limited thereto.

The first uneven portion (311r1) may be formed in an area between the first short side (311b1) of the first side wall (311b) and the center or third area (A3) of the first plate (311a). For example, with respect to the first direction (X), one end of the first uneven portion (311r1) may be the first short side (311b1) of the first side wall (311b) or may be aligned with the first short side (311b1) of the first side wall (311b). For example, with respect to the first direction (X), one end of the first uneven portion (311r1) may be connected to or directly connected to the outer wall of the first short side (311b1) of the first side wall (311b) without being spaced apart from it. For example, the corner portion between the first side wall (311b) and the first uneven portion (311r1) may be configured to be sharp. For example, the corner portion between one end of the first uneven portion (311r1) and the first short side (311b1) of the first side wall (311b) may be configured to be sharp. For example, the corner portion between one end of the first uneven portion (311r1) and the first short side (311b1) of the first side wall (311b) may be configured to be sharp without including a curved surface and/or a flat surface.

According to one embodiment of the present specification, the thickness (T1 to T2) of one side or the first region (A1) of the first plate (311a) including the first uneven portion (311r1) may gradually decrease from the first short side (311b1) of the first side wall (311b) toward the center or the third region (A3) of the first plate (311a). For example, with respect to the first direction (X), the distance (or thickness) (T1 to T2) between the first surface (311i) of the first plate (311a) and the first uneven portion (311r1) may gradually decrease from the first short side (311b1) of the first side wall (311b) toward the center or the third region (A3) of the first plate (311a).

The second uneven portion (311r2) may be located on or configured on the other side of the second face (311r) of the first plate (311a). For example, the second uneven portion (311r2) may be located on or configured in the second area (A2) of the first plate (311a) of the second face (311r). For example, the second uneven portion (311r2) may be located on or configured in the second area (A2) of the second face (311r) of the first plate (311a). The second uneven portion (311r2) may be configured to include an uneven structure in the second area (A2) of the second face (311r) of the first plate (311a). For example, the second uneven portion (311r2) may be configured as a curved structure, a round structure, or a concave structure so as to have a preset curvature in the second area (A2) of the second surface (311r) of the first plate (311a), but the embodiments of the present specification are not limited thereto. For example, the first uneven portion (311r1) and the vibrating object (or vehicle structure) may have a full-surface contact structure (or full-surface joining structure) without a non-contact portion (or non-contact area).

The second uneven portion (311r2) may be formed in an area between the second short side (311b2) of the first side wall (311b) and the center or third area (A3) of the first plate (311a). For example, with respect to the first direction (X), one end of the second uneven portion (311r2) may be the second short side (311b2) of the first side wall (311b) or may be aligned with the second short side (311b2) of the first side wall (311b). For example, with respect to the first direction (X), one end of the second uneven portion (311r2) may be connected to or directly connected to the outer wall of the second short side (311b2) of the first side wall (311b) without being spaced apart from it. For example, the corner portion between the first side wall (311b) and the second uneven portion (311r2) may be configured to be sharp. For example, the corner portion between one end of the second uneven portion (311r2) and the second short side (311b2) of the first side wall (311b) may be configured to be sharp. For example, the corner portion between one end of the second uneven portion (311r2) and the second short side (311b2) of the first side wall (311b) may be configured to be sharp without including a curved surface and/or a flat surface.

According to one embodiment of the present specification, the thickness (T1 to T2) of the other side or second region (A2) of the first plate (311a) including the second uneven portion (311r2) may gradually decrease from the second short side (311b2) of the first side wall (311b) toward the center or third region (A3) of the first plate (311a). For example, with respect to the first direction (X), the distance (or thickness) (T1 to T2) between the first side (311i) of the first plate (311a) and the second uneven portion (311r2) may gradually decrease from the second short side (311b2) of the first side wall (311b) toward the center or third region (A3) of the first plate (311a). For example, the second uneven portion (311r2) may be configured to be symmetrical left and right with respect to the first direction (X) and the center or third area (A3) of the first plate (311a).

The flat portion (311r3) may be located or configured in a region between the first uneven portion (311r1) and the second uneven portion (311r2). The flat portion (311r3) may be configured to be connected to the first uneven portion (311r1) and the second uneven portion (311r2). For example, the flat portion (311r3) may be located or configured in the center or the third region (A3) of the first plate (311a). For example, the flat portion (311r3) may be configured to include a flat structure or a planar structure in the third region (A3) of the second surface (311r) of the first plate (311a). For example, the second non-flat portion (311r2) and the vibrating object (or vehicle structure) may have a full-surface contact structure (or full-surface bonding structure) without a non-contact portion (or non-contact area).

According to one embodiment of the present specification, the flat portion (311r3) may include a flat structure or a planar structure having the same thickness as each of the first uneven portion (311r1) and the second uneven portion (311r2) adjacent to the third region (A3). For example, the thickness (T2) of the center or the third region (A3) of the first plate (311a) including the flat portion (311r3) may be the same or may be the same throughout. For example, with respect to the first direction (X), the distance (or thickness) (T2) between the first surface (311i) of the first plate (311a) and the flat portion (311r3) may be the same as the thinnest thickness (T2) of each of the first uneven portion (311r1) and the second uneven portion (311r2), but the embodiments of the present specification are not limited thereto. For example, the flat portion (311r3) and the vibrating object (or vehicle structure) may have a full-surface contact structure (or full-surface bonding structure) without a non-contact portion (or non-contact area).

According to one embodiment of the present specification, the second surface (311r) of the first enclosure (311) includes a non-flat structure including a first non-flat portion (311r1) and a second non-flat portion (311r2), so that the vibrating object (or vehicle structure) can include a full-surface contact structure (or full-surface bonding structure) without a non-contact portion (or non-contact area).

The second enclosure (312) (or second enclosure member) may be configured on a second side of the sound generating module (330) opposite the first side of the sound generating module (330). The second enclosure (312) may be configured to support the second side of the sound generating module (330). For example, the second enclosure (312) may be configured to cover the second side of the sound generating module (330). For example, the second enclosure (312) may be configured to support a portion of the sound generating module (330). For example, the second enclosure (312) may be configured to cover the entire second side of the sound generating module (330). For example, the second enclosure (312) may be configured to surround the entire second side of the sound generating module (330). For example, the second enclosure (312) may be configured to be connected or coupled with a portion of the sound generating module (330).

A second enclosure (312) according to one embodiment of the present specification may include a second plate (312a) and a second side wall (312b).

The second plate (312a) may be configured to cover the sound generating module (330). The second plate (312a) may be configured to cover the second surface of the sound generating module (330). The second plate (312a) may be spaced apart from the second surface of the sound generating module (330).

The second side wall (312b) may be connected to an edge portion of the second plate (312a). The second side wall (312b) may be connected perpendicularly to the edge portion of the second plate (312a). For example, the second side wall (312b) may be connected perpendicularly to a first edge portion (or an inner edge portion) of the second plate (312a) facing the second side of the sound generating module (330). The second side wall (312b) may be configured to support a portion of the sound generating module (330). For example, the second side wall (312b) may be configured to be connected or coupled with a portion of the sound generating module (330).

According to one embodiment of the present specification, the interior space (313) of the enclosure (310) may be between the first enclosure (311) and the second enclosure (312). For example, the interior space (313) of the enclosure (310) may be provided in an area between the first enclosure (311) and the sound generating module (330), and may be provided in an area between the second enclosure (312) and the sound generating module (330).

According to one embodiment of the present specification, the internal space (313) of the enclosure (310) may include a first space (313a) and a second space (313b).

The first space (313a) and the second space (313b) may be spatially separated by the sound generation module (330), but the embodiments of the present specification are not limited thereto.

The first space (313a) may include a space between the first enclosure (311) and the sound generating module (330). For example, the first space (313a) may include a space between the first enclosure (311) and a first side of the sound generating module (330). For example, the first space (313a) may include a space provided between the first side wall (311b) of the first enclosure (311) and the first side of the sound generating module (330).

The second space (313b) may include a space between the second enclosure (312) and the sound generating module (330). For example, the second space (313b) may include a space between the second enclosure (312) and a second surface of the sound generating module (330). For example, the second space (313b) may include a space provided between the inner surface (312i) of the second plate (312a) and the second surface of the sound generating module (330) by the second side wall (312b) of the second enclosure (312).

An acoustic generating module (330) according to one embodiment of the present specification may include a vibration member (331) and a vibration device (333, 335).

The vibration member (331) can generate vibration or output sound (or sound waves) according to the displacement (or driving) of the vibration device (333, 335). For example, the vibration member (331) can generate vibration or output sound (or sound waves) in the internal space (313) of the enclosure (310) according to the displacement (or driving) of the vibration device (333, 335). For example, the vibration member (331) can be a plate, a vibration plate, a diaphragm, a vibration substrate, a vibration object, a vibration panel, a sound plate, a sound panel, a passive vibration plate, a passive vibration member, a passive vibration panel, an acoustic output plate, or an acoustic vibration plate, but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the vibration member (331) may include a metal material or may include one or more single non-metallic or composite non-metallic materials selected from the group consisting of wood, rubber, plastic, carbon, glass, fiber, cloth, paper, mirror, and leather, and the embodiments of the present specification are not limited thereto. For example, the paper may be cone paper for speakers. For example, the cone paper may be pulp or foamed plastic, and the embodiments of the present specification are not limited thereto.

The metal material of the vibration member (331) may include one or more of stainless steel, aluminum (Al), an aluminum (Al) alloy, magnesium (Mg), a magnesium (Mg) alloy, and a magnesium lithium (Mg-Li) alloy, and the embodiments of the present specification are not limited thereto. For example, the vibration member (331) may be formed of a metal material such as aluminum, or a plastic material such as plastic or styrene, but the embodiments of the present specification are not limited thereto.

The plastic material of the vibration member (331) may be composed of polyethylene terephthalate, polycarbonate, polyimide, polyimide, polypropylene, polyarylate, polyethersulfone, polyethylene naphthalate, polysulfone, cyclo-olefin copolymer, or carbon fiber reinforced plastic (CFRP), but the embodiments of the present specification are not limited thereto.

The styrene material of the vibration member (331) may be an ABS material. The ABS material may be acrylonitrile, butadiene, and styrene.

The vibrating member (331) may be composed of a porous material. For example, the vibrating member (331) may include a microcellular plastic material. For example, the vibrating member (331) may be composed of a polyethylene terephthalate material or a polycarbonate material. For example, the vibrating member (331) may be composed of a microcellular polyethylene terephthalate (MCPET) material. The vibrating member (331) composed of microcellular PET has a low density and excellent elasticity, and thus has a high original sound reproduction ability, thereby improving the sound quality.

According to one embodiment of the present specification, the vibrating member (331) may have a square shape, but the embodiments of the present specification are not limited thereto. For example, the vibrating member (331) may have a rectangular shape having long sides and short sides. For example, the vibrating member (331) may include a first side and a second side different from (or opposite to) the first side. For example, in the vibrating member (331), the first side may be a rear side, a back side, or a lower side, and the second side may be a front side or a top side, but the embodiments of the present specification are not limited thereto.

The vibration member (331) may be disposed in the internal space (313) and configured between the first enclosure (311) and the second enclosure (312). For example, the vibration member (331) may be disposed in the internal space (313) and supported by at least one of the first enclosure (311) and the second enclosure (312). For example, the vibration member (331) may be disposed to cover the internal space (313) and supported by at least one of the first enclosure (311) and the second enclosure (312). For example, the vibration member (331) may be disposed to cover the internal space (313) of the enclosure (310). For example, the vibration member (331) may be supported by the first enclosure (311) and the second enclosure (312).

According to one embodiment of the present specification, the first enclosure (311) of the enclosure (310) may be disposed or configured on a first surface (or rear surface) of the vibrating member (331). The first enclosure (311) of the enclosure (310) may be connected (or coupled) to the first surface of the vibrating member (331). For example, the first enclosure (311) may be connected (or coupled) to an edge portion of the first surface of the vibrating member (331). The first enclosure (311) may be configured to support the edge portion of the first surface of the vibrating member (331).

According to one embodiment of the present specification, the second enclosure (312) may be disposed or configured on the second face (or front) of the vibrating member (331). The second enclosure (312) may be configured to support an edge portion of the second face of the vibrating member (331). The second enclosure (312) of the enclosure (310) may be connected (or coupled) with the second face of the vibrating member (331). For example, the second enclosure (312) may be connected (or coupled) with an edge portion of the second face of the vibrating member (331).

The vibration device (333, 335) may be configured to vibrate the vibration member (331). For example, the vibration device (333, 335) may be configured to vibrate (or displace or drive) the vibration member (331) by vibrating (or displacing or driving) according to an applied driving signal (or a vibration driving signal or a voice signal).

The vibration device (333, 335) may have a shape corresponding to or identical to the vibration member (331), but the embodiments of the present specification are not limited thereto. For example, the vibration device (333, 335) may have a different shape from the vibration member (331). For example, the vibration device (333, 335) may include a rectangular shape or a square shape. For example, the vibration device (333, 335) may include a rectangular shape or a square shape that is smaller than the vibration member (331).

The vibration devices (333, 335) may be disposed or configured on the vibration member (331). For example, the vibration devices (333, 335) may be disposed or configured on at least one of the first side and the second side of the vibration member (331). For example, the sound generating module (330) may include a plurality of vibration devices (333, 335). For example, the plurality of vibration devices (333, 335) may be disposed or configured on at least one of the first side and the second side of the vibration member (331). For example, the plurality of vibration devices (333, 335) may be disposed or configured on the first side and the second side of the vibration member (311), respectively, with the vibration member (331) interposed therebetween.

An acoustic generating module (330) or a vibration device (333, 335) according to one embodiment of the present specification may include a first vibration device (333) and a second vibration device (335).

The first vibration device (333) and the second vibration device (335) may be configured on the vibration member (331). For example, the first vibration device (333) and the second vibration device (335) may be arranged with the vibration member (331) therebetween. For example, the first vibration device (333) may be arranged or configured on the first surface of the vibration member (331), and the second vibration device (335) may be arranged or configured on the second surface of the vibration member (331).

According to one embodiment of the present specification, the long sides of each of the first vibration device (333) and the second vibration device (335) may be parallel to the long sides of the vibration member (331) and spaced apart from the long sides of the vibration member (331) by a first distance (or a first shortest distance). Each of the first vibration device (333) and the second vibration device (335) may have a smaller size than the vibration member (331).

The first vibration device (333) and the second vibration device (335) can be configured to vibrate (or displace or drive) the vibration member (331) according to an applied driving signal (or a vibration driving signal or a voice signal). The vibration member (331) can generate vibration or output sound (or sound waves) according to the displacement (or driving) of the first vibration device (333) and the second vibration device (335).

According to one embodiment of the present specification, the driving signals (or vibration driving signals or voice signals) applied to the first vibration device (333) and the second vibration device (335) may be the same as or different from each other. For example, the driving signals applied to the first vibration device (333) and the second vibration device (335) may have the same or different phases. For example, the first vibration device (333) and the second vibration device (335) may have a bimorph structure disposed with the vibration member (331) therebetween. Since the first vibration device (333) and the second vibration device (335) can independently vibrate the vibration member (331), the influence on the acoustic characteristics according to the material and characteristics of the vibration member (331) can be reduced. As a result, the acoustic characteristics and/or sound pressure characteristics of the acoustic device (30) can be improved.

According to another embodiment of the present specification, the first vibration device (333) and the second vibration device (335) may be configured on either the first side or the second side of the vibration member (331). For example, the first vibration device (333) may be configured on either the first side or the second side of the vibration member (331). For example, the first vibration device (333) may be connected or configured on the first side of the vibration member (331). For example, the second vibration device (335) may be connected to the first vibration device (333). For example, the second vibration device (335) may be laminated on the first vibration device (333).

The acoustic device (30) or the acoustic generating module (330) according to the embodiment of the present specification may further include an adhesive member (332, 334). For example, the adhesive member may include a first adhesive member (332) and a second adhesive member (334).

A first adhesive member (332) may be disposed (or interposed) between the vibration member (331) and the first vibration device (333). The first vibration device (333) may be connected or coupled to the vibration member (331) by the first adhesive member (332). For example, the first vibration device (333) may be connected or coupled to a first surface of the vibration member (331) by the first adhesive member (332).

A second adhesive member (334) may be disposed (or interposed) between the vibration member (331) and the second vibration device (335). The second vibration device (335) may be connected or coupled to the vibration member (331) by the second adhesive member (334). For example, the second vibration device (335) may be connected or coupled to the second surface of the vibration member (331) by the second adhesive member (334).

The first adhesive member (332) and the second adhesive member (334) may include an adhesive layer (or adhesive layer) having excellent adhesion or adhesive strength. For example, the first adhesive member (332) and the second adhesive member (334) may include the same or different adhesive layers (or adhesive layers). For example, the first adhesive member (332) and the second adhesive member (334) may include an adhesive, a double-sided adhesive, a double-sided tape, a double-sided adhesive tape, a double-sided adhesive foam tape, a double-sided pad, a double-sided foam pad, a double-sided adhesive foam pad, a double-sided cushion tape, or an adhesive sheet, and the embodiments of the present specification are not limited thereto.

An enclosure (310) or a first enclosure (311) according to one embodiment of the present specification may further include an opening (310o).

The opening (310o) may be configured to penetrate (or vertically penetrate) the first enclosure (311) along the thickness direction (Z) (or vertical direction) of the enclosure (310). The opening (310o) may be connected to (or communicated with) an internal space (313). For example, the opening (310o) may be connected to the first space (313a). For example, the opening (310o) may be configured to reduce air pressure in the internal space (313) of the enclosure (310). For example, the opening (310o) may be connected to the first space (313a). The internal space (313) of the enclosure (310) may include a space connected to the opening (310o). For example, the internal space (313) of the enclosure (310) may include a first space (313a) connected to an opening (310o).

The opening (310o) may be configured to reduce the air pressure in the first space (313a) of the first enclosure (311), or in the first space (313a) provided between the vibration member (331) and the first enclosure (311). As a result, the low-frequency range can be expanded, and thus the acoustic characteristics of the low-frequency range can be improved. For example, as the pressure (or air pressure) of the first space (313a) is lowered by the opening (310o), the displacement amount (or bending force) of the first vibration device (333) arranged between the vibration member (331) and the first enclosure (311) can be increased, and thereby the low-frequency range can be expanded, and the acoustic characteristics and/or sound pressure characteristics of the low-frequency range can be improved. Accordingly, the low-frequency sound (or sound pressure) generated by the vibration of the first vibration device (333) and/or the second vibration device (335) can be improved.

According to one embodiment of the present specification, the opening (310o) may be arranged to correspond to the center of the sound generating module (330). For example, the opening (310o) may be spaced apart from the sound generating module (330) or the center of the sound generating module (330). The opening (310o) may be arranged to correspond to the center of the vibration device (333, 335). For example, the opening (310o) may be spaced apart from the vibration device (333, 335) or the center of the vibration device (333, 335). For example, the opening (310o) may be arranged to correspond to the center of the first vibration device (333) and the second vibration device (335). For example, the opening (310o) may be spaced apart from the center of the first vibration device (333) and the second vibration device (335) or the center of the first vibration device (333) and the second vibration device (335).

According to one embodiment of the present specification, the opening (310o) may be smaller than the size of the first vibration device (333). For example, the opening (310o) may be smaller than the size of the first vibration device (333) disposed on the vibration member (331). For example, the opening (310o) may be configured in the second area (A2) of the rear surface (310a) of the enclosure (310). For example, with respect to the first direction (X), the length of the opening (310o) may be the same as the length of the second area (A2) of the rear surface (310a) of the enclosure (310), but the embodiments of the present specification are not limited thereto. For example, the opening (310o) may include a line shape having a size (or length) smaller than the size of the first vibration device (333) disposed on the vibration member (331). For example, the opening (310o) may be a hole, a slot, or a slit, but the embodiments of the present specification are not limited thereto. For example, the opening (310o) may be a sound emission portion, a sound emission port, a sound output portion, a sound output port, a sound output hole, a duct hole, or a vent hole, but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the opening (310o) may be a space in which sound waves (or sounds) generated by the vibration of the sound generating module (330) are propagated (or transmitted) to the interior space of the vehicle. For example, the vibration of the sound generating module (330) may be transmitted to a vibrating object or the interior space of the vehicle through the opening (310o). For example, sound waves (or sounds) generated by the vibration of the sound generating module (330) may be transmitted (or output or emitted) to the interior space of the vehicle through the opening (310o). As a result, the vibration amplitude (or displacement amplitude) of the vibrating member (331) due to the vibration of the sound generating module (330) may increase, and thus the acoustic characteristics and/or sound pressure characteristics generated by the vibration of the vibrating member (331) may be improved.

The first enclosure (311) may be positioned closer to the vehicle interior (130) than the second enclosure (312). For example, the first enclosure (311) including the opening (310o) may be positioned closer to the vehicle interior (130) than the second enclosure (312). Accordingly, sound generated by vibration of at least one of the first vibration device (333) and the second vibration device (225) can be output to the interior space of the vehicle, so that sound including a low-pitched sound range can be output to the interior space of the vehicle.

The enclosure (310) or the first enclosure (311) may further include an inclined surface (311s). The inclined surface (311s) may be configured to be inclined between the first surface (311i) of the first enclosure (311) and the opening (310o). The inclined surface (311s) may be configured to guide sound generated by the vibration of the sound generating module (330) into the interior space of the vehicle. Accordingly, sound generated by the vibration of the sound generating module (330) may be output into the interior space of the vehicle, and acoustic characteristics and/or sound pressure characteristics of sound including low-frequency ranges may be further improved. For example, the inclined surface (311s) may be a guide surface or a sound guide surface, but the embodiments of the present specification are not limited thereto.

An acoustic device (30) according to one embodiment of the present specification may further include a coupling member (320).

The coupling member (320) may be configured to connect or couple the vibrating member (331) and the enclosure (310) to each other. For example, the coupling member (320) may be between an edge portion of the vibrating member (331) and the enclosure (310). The coupling member (320) may include a first coupling member (321) and a second coupling member (322).

The first coupling member (321) may be between the vibrating member (331) and the first enclosure (311). The first coupling member (321) may be between an edge portion of the vibrating member (331) and the first enclosure (311). For example, the first side wall (311b) of the first enclosure (311) may be connected or coupled to a first surface of the vibrating member (331) by the first coupling member (321). For example, the first side wall (311b) of the first enclosure (311) may be connected or coupled to an edge portion of the first surface of the vibrating member (331) by the first coupling member (321).

The second coupling member (322) may be between the vibrating member (331) and the second enclosure (312). The second coupling member (322) may be connected or coupled between an edge portion of the vibrating member (331) and the second enclosure (312). For example, the second side wall (312b) of the second enclosure (312) may be connected or coupled to a second surface of the vibrating member (331) by the second coupling member (322). For example, the second side wall (312b) of the second enclosure (312) may be connected or coupled to an edge portion of the second surface of the vibrating member (331) by the second coupling member (322).

The vibration member (331) is disposed between the first coupling member (321) and the second coupling member (322), and thus can be configured in the internal space (313) of the enclosure (310). For example, the vibration member (331) can be spaced apart from the opening (310o).

According to one embodiment of the present specification, the coupling member (320) may be configured to minimize the transmission of vibration of the vibration member (331) to the first side wall (311b) of the first enclosure (311). The coupling member (320) may include material properties suitable for blocking vibration. For example, the coupling member (320) may include a material having elasticity. For example, the coupling member (320) may include a material having elasticity for vibration absorption (or shock absorption). The coupling member (320) according to one embodiment of the present specification may be composed of a polyurethane material or a polyolefin material, but the embodiments of the present specification are not limited thereto. For example, the bonding member (320) may include one or more of an adhesive, a double-sided adhesive, a double-sided tape, a double-sided adhesive tape, a double-sided foam tape, a double-sided adhesive foam tape, a double-sided pad, a double-sided foam pad, a double-sided adhesive foam pad, and a double-sided cushion tape, but the embodiments of the present specification are not limited thereto.

A coupling member (320) according to another embodiment of the present specification can minimize or prevent the vibration of the vibrating member (331) from being transmitted to the enclosure (310), and can be configured to reduce the reflection of sound waves generated and incident due to the vibration of the vibrating member (331).

Since the acoustic device (30) according to one embodiment of the present specification includes a sound generating module (330) having a bimorph structure, the acoustic characteristics and/or sound pressure characteristics of sound including a low-frequency range can be improved, and sound having a wide directivity angle or three-dimensional sound can be output. Since the acoustic device (30) according to one embodiment of the present specification includes a rear surface (310a) of the enclosure (310) having a non-flat structure, unnecessary vibration occurring between the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and a vibrating object (or a vehicle structure) can be prevented, so that the total harmonic distortion characteristic can be reduced, and the acoustic characteristics and/or sound pressure characteristics can be improved. An acoustic device (30) according to one embodiment of the present specification includes an enclosure (310) having an opening (310o), so that a low-frequency band can be expanded as air pressure in an internal space (313) of the enclosure (310) decreases, and thus acoustic characteristics and/or sound pressure characteristics of the low-frequency band can be improved.

FIG. 7 is a drawing showing an acoustic device according to another embodiment of the present specification. For example, FIG. 7 is another cross-sectional view taken along line I-I' shown in FIG. 3 according to one embodiment of the present specification.

Referring to FIG. 7, an acoustic device (30) according to another embodiment of the present specification may include an enclosure (310), a sound generating module (330), and a coupling member (320). The description of the enclosure (310), the sound generating module (330), and the coupling member (320) is substantially the same as that described with reference to FIGS. 3 to 6, and therefore, the same drawing reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified.

An acoustic device (30) according to another embodiment of the present specification may further include a connecting member (350).

The connecting member (350) may be connected to or configured with the enclosure (310). For example, the connecting member (350) may be disposed on the rear surface (310a) of the enclosure (310). For example, the connecting member (350) may be disposed on or connected to the first enclosure (311). For example, the connecting member (350) may be disposed on or connected to the second surface (311r) of the first enclosure (311). For example, the connecting member (350) may be disposed on or connected to the rear surface (310a) of the enclosure (310) or the second surface (311r) of the first enclosure (311) to have an uneven structure.

The connecting member (350) may have a shape corresponding to the rear surface (310a) of the enclosure (310). The connecting member (350) may be arranged or connected to a plurality of uneven portions (311r1, 311r2) and flat portions (311r3) of the enclosure (310) (or the first enclosure (311)). For example, the connecting member (350) may have a constant thickness. For example, the connecting member (350) may be arranged or connected to a plurality of uneven portions (311r1, 311r2) and flat portions (311r3) of the enclosure (310) (or the first enclosure (311)) so as to have a constant thickness, thereby having a shape corresponding to the rear surface (310a) of the enclosure (310). The second side of the connecting member (350) may have a non-flat structure corresponding to the rear surface (310a) of the enclosure (310).

When the acoustic device (30) or the enclosure (310) is connected (or coupled) to a vibrating object (or vehicle structure) by a connecting member (350), the connecting member (350) may be disposed between the vibrating object (or vehicle structure) and the enclosure (310). For example, the connecting member (350) may be disposed between the first enclosure (311) and the vibrating object (or vehicle structure). For example, the vibrating object (or vehicle structure) may be a structure on which the acoustic device (30) or the enclosure (310) is mounted. The connecting member (350) may be a connecting member, an intermediate member, or a buffer member, and the embodiments of the present specification are not limited thereto.

Since the second surface of the connecting member (350) has a non-flat structure, it can be configured to have a full-face contact structure (or full-face coupling structure) with the vibrating object (or vehicle structure). For example, when the connection area (or coupling area) between the vibrating object (or vehicle structure) and the rear surface (310a) of the enclosure (310) includes a curved surface (or curved portion), the second surface of the connecting member (350) can have a full-face contact structure (or full-face coupling structure) with the vibrating object (or vehicle structure) without a non-contact portion (or non-contact area).

The connecting member (350) may be configured to transmit the vibration of the first enclosure (311) according to the vibration of the sound generating module (330) to the vibrating object (or vehicle structure). As a result, the vibrating object (or vehicle structure) can vibrate due to the vibration transmitted through the connecting member (350) to generate (or output) sound. Since the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and the vibrating object (or vehicle structure) have a full-surface contact structure (or full-surface joining structure) without a non-contact portion (or non-contact area) via the connecting member (350), unnecessary vibration occurring between the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and the vibrating object (or vehicle structure) can be prevented, so that the total harmonic distortion characteristic can be reduced, and thus the acoustic characteristics and/or sound pressure characteristics can be improved.

According to another embodiment of the present specification, the connecting member (350) may be connected (or coupled) to the periphery of the opening (310o) in the second face (311r) of the first enclosure (311). For example, the connecting member (350) may be connected between the periphery of the opening (310o) in the second face (311r) of the first enclosure (311) and the vibrating object (or vehicle structure).

According to another embodiment of the present specification, the connecting member (350) may be formed of a hard material. The connecting member (350) may be formed of a material having high elasticity (or Young's modulus) and high tensile strength. For example, the connecting member (350) may be rubber, but the embodiments of the present specification are not limited thereto. For example, the rubber may be ethylene propylene rubber or urethane rubber, but the embodiments of the present specification are not limited thereto. For example, the ethylene propylene rubber may be ethylene propylene diene monomer (EPDM), but the embodiments of the present specification are not limited thereto. For example, the hardness of EPDM may be 40 to 90, but the embodiments of the present specification are not limited thereto. For example, the tensile strength of EPDM may be 50 kg/cm ² to 200 kg/cm ² , but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the connecting member (350) may further include a hole (350o). For example, the connecting member (350) may further include a hole (350o) that is connected to an opening (310o) in the enclosure (310) or the first enclosure (311). The hole (350o) may be arranged to correspond to (or overlap) the opening (310o). Accordingly, sound resulting from the vibration of the sound generating module (330) may be output to the interior space of the vehicle through the opening (310o) and the hole (350o). The hole (350o) may have the same shape as the opening (310o), but the embodiments of the present specification are not limited thereto. For example, the hole (350o) may be a through hole, a first through hole, an opening, an opening hole, a slit, a slot, a connecting hole, or an intermediate hole, but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the connecting member (350) may be protected by a peeling film (or protective film). The peeling film may be attached to a second surface of the connecting member (350). The peeling film may be peeled (or removed) from the connecting member (350) when the acoustic device (30) including the connecting member (350) is mounted on a vibrating object (or vehicle structure).

The connecting member (350) according to the embodiment of the present specification can prevent unnecessary vibration of the sound generating module (330) from being transmitted to the interior space of the vehicle, thereby improving the acoustic characteristics and/or sound pressure characteristics of the acoustic device (30). In addition, the connecting member (350) can reduce heat generated when the sound generating module (330) vibrates.

FIG. 8 is a drawing showing an acoustic device according to another embodiment of the present specification. For example, FIG. 8 is another cross-sectional view taken along line I-I' shown in FIG. 3 according to one embodiment of the present specification.

Referring to FIG. 8, an acoustic device (30) according to another embodiment of the present specification may include an enclosure (310), a sound generating module (330), and a coupling member (320). The description of the enclosure (310), the sound generating module (330), and the coupling member (320) is substantially the same as that described with reference to FIGS. 3 to 6, and therefore, the same drawing reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified.

An acoustic device (30) according to another embodiment of the present specification may further include a soft member (360).

The soft member (360) may be connected to or configured with the enclosure (310). For example, the soft member (360) may be disposed on the rear surface (310a) of the enclosure (310). For example, the soft member (360) may be disposed on or connected to the first enclosure (311). For example, the soft member (360) may be disposed on or connected to the second surface (311r) of the first enclosure (311). For example, the soft member (360) may be disposed on or connected to the rear surface (310a) of the enclosure (310) or the second surface (311r) of the first enclosure (311) to have an uneven structure.

The soft member (360) is identical or substantially identical to the connecting member (350) described with reference to FIG. 7 except that it is made of a different material, and therefore, a duplicate description thereof will be omitted. Accordingly, the description of the connecting member (350) described with reference to FIG. 7 may be included in the description of the soft member (360).

According to an embodiment of the present specification, the soft member (360) may be composed of a different material from the connecting member (350) described with reference to FIG. 7. The elasticity (or Young's modulus) of the soft member (360) may be composed of a different material from the elasticity of the connecting member (350). For example, the soft member (360) may be composed of a material having low elasticity. The soft member (360) may be composed of a soft material. For example, the soft member (360) may be ethylene propylene rubber or urethane rubber, but the embodiments of the present specification are not limited thereto. For example, the ethylene propylene rubber may be ethylene propylene diene monomer (EPDM), and EPDM may be composed of EPDM having low elasticity by changing the foaming ratio, but the embodiments of the present specification are not limited thereto. For example, the soft member (360) may be composed of a single-sided tape, a single-sided sponge tape, a single-sided porous tape, a single-sided cushion tape, a double-sided tape, a double-sided sponge tape, a double-sided porous tape, or a double-sided cushion tape, and the embodiments of the present specification are not limited thereto.

According to an embodiment of the present specification, the soft member (360) may further include a hole (360o) (or a second hole or an opening hole). For example, the soft member (360) may further include a hole (360o) connected to the opening (310o).

The hole (360o) may be arranged corresponding to the opening (310o). Accordingly, sound resulting from the vibration of the sound generating module (330) may be output to the interior space of the vehicle through the opening (310o) and the hole (360o). The hole (360o) may have the same shape as the opening (310o), and the embodiments of the present specification are not limited thereto. For example, the hole (360o) may be an opening, an opening hole, a slit, a slot, a connecting hole, or an intermediate hole, and the embodiments of the present specification are not limited thereto.

The soft member (360) according to the embodiment of the present specification can absorb external impact, and thus protect the acoustic device (30) from external impact. For example, the soft member (360) may be a porous member, a buffer member, or a cushioning member, and the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the soft member (360) may be protected by a peeling film (or protective film). The peeling film may be attached to an adhesive surface of the soft member (360). The peeling film may be peeled (or removed) from the soft member (360) when the acoustic device (30) including the soft member (360) is mounted on a vibrating object (or vehicle structure).

The soft member (360) according to the embodiment of the present specification may be configured to transmit the vibration of the first enclosure (311) due to the vibration of the sound generating module (330) to the vibrating object (or vehicle structure). As a result, the vibrating object (or vehicle structure) may vibrate due to the vibration transmitted through the soft member (360) to generate (or output) sound.

The soft member (360) according to the embodiment of the present specification can absorb external impact, and thus prevent damage to the sound generating module (330). As a result, the durability and reliability of the sound device (30) can be improved. Since the rear surface (310a) of the enclosure (310) according to the embodiment of the present specification and the vibrating object (or vehicle structure) have a full-surface contact structure (or full-surface joint structure) without a non-contact portion (or non-contact area) via the soft member (360), unnecessary vibrations occurring between the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and the vibrating object (or vehicle structure) can be prevented, and thus the total harmonic distortion characteristics can be reduced, and thus the acoustic characteristics and/or sound pressure characteristics can be improved.

According to another embodiment of the present specification, the soft member (360) may be configured in the enclosure (310) or laminated to the soft member (350) instead of the connecting member (350) described with reference to FIG. 7. For example, the connecting member (350) and the soft member (360) may be disposed between the first enclosure (311) and the vibrating object (or vehicle structure). For example, the connecting member (350) may be connected to the first enclosure (311), and the soft member (360) may be disposed between the connecting member (350) and the vibrating object (or vehicle structure).

FIG. 9 is a drawing showing an acoustic device according to another embodiment of the present specification. For example, FIG. 9 is another cross-sectional view taken along line I-I' shown in FIG. 3 according to one embodiment of the present specification.

Referring to FIG. 9, an acoustic device (30) according to another embodiment of the present specification may include an enclosure (310), a sound generating module (330), and a coupling member (320). The description of the enclosure (310), the sound generating module (330), and the coupling member (320) is substantially the same as that described with reference to FIGS. 3 to 6, and therefore, the same drawing reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified.

An acoustic device (30) according to another embodiment of the present specification may include a vibration device (333, 335) including one or more vibration generators. For example, the vibration device (333, 335) may include one or more vibration generators.

The first vibration device (333) of the vibration device (333, 335) may include one or more vibration generators (333A, 333B). The first vibration device (333) may include a first vibration generator (333A) and a second vibration generator (333B). For example, the second vibration generator (333B) may be stacked on the first vibration generator (333A).

The second vibration device (335) of the vibration device (333, 335) may include one or more vibration generators (335A, 335B). The second vibration device (335) may include a first vibration generator (335A) and a second vibration generator (335B). For example, the second vibration generator (335B) may be stacked on the first vibration generator (335A). A vibration device (333, 335) including one or more vibration generators will be described below with reference to FIG. 43.

According to another embodiment of the present specification, the vibration device (333, 335) including one or more vibration generators may be configured on the first side or the second side of the vibration member (331). For example, one of the first vibration device (333) and the second vibration device (335) including one or more vibration generators may be configured only on the first side of the vibration member (331). For example, one of the first vibration device (333) and the second vibration device (335) including one or more vibration generators may be disposed in the first space (313a). For example, the first vibration device (333) including one or more vibration generators may be configured on the first side of the vibration member (331), and the second vibration device (335) including one or more vibration generators may be omitted.

According to another embodiment of the present specification, one of the first vibration device (333) and the second vibration device (335) including one or more vibration generators may be configured only on the second surface of the vibration member (331). For example, one of the first vibration device (333) and the second vibration device (335) including one or more vibration generators may be disposed in the second space (313b). For example, the second vibration device (335) including one or more vibration generators may be configured on the second surface of the vibration member (331), and the first vibration device (333) including one or more vibration generators may be omitted.

A vibration device (333, 335) according to another embodiment of the present specification may include one or more vibration generators that are stacked (or overlapped or superimposed) to vibrate (or displace or drive) in the same direction, thereby maximizing or increasing the displacement amount or amplitude displacement, thereby maximizing or increasing the displacement amount (or bending force or driving force) or amplitude displacement of the vibration member (331).

Fig. 10 is a drawing showing an acoustic device according to another embodiment of the present specification. Fig. 11 is an exploded perspective view of the acoustic device shown in Fig. 10 according to another embodiment of the present specification. Fig. 12 is a cross-sectional view taken along line III-III' shown in Fig. 10 according to another embodiment of the present specification. Fig. 13 is a cross-sectional view taken along line IV-IV' shown in Fig. 10 according to another embodiment of the present specification.

Referring to FIGS. 10 to 13, an acoustic device (30) according to another embodiment of the present specification may include an enclosure (310), a sound generating module (330), and a coupling member (320). The description of the enclosure (310), the sound generating module (330), and the coupling member (320) is substantially the same as that described with reference to FIGS. 3 to 6, and therefore, the same drawing reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified.

An acoustic device (30) according to another embodiment of the present specification may further include a connecting member (350). The description of the connecting member (350) is substantially the same as that described with reference to FIG. 7, and therefore, the description may be omitted or simplified herein.

According to another embodiment of the present specification, a connecting member (350) may be disposed on the rear side (310a) of the enclosure (310). The vehicle interior material (130) may be connected or coupled to the rear side (310a) of the enclosure (310) by the connecting member (350). For example, the connecting member (350) may be disposed on the second side (311r) of the first enclosure (311). For example, the connecting member (350) may be connected or coupled to the second side (311r) of the first enclosure (311). The connecting member (350) may be disposed between the enclosure (310) and the vehicle interior material (130). For example, the connecting member (350) may be disposed between the first enclosure (311) and the vehicle interior material (130).

According to the embodiment of the present specification, since the connecting member (350) is made of a relatively hard material (or hard material), the vibration of the first enclosure (311) due to the vibration of the vibration device (333, 335) can be transmitted to the vehicle interior material (130). As a result, the vehicle interior material (130) can vibrate due to the vibration transmitted through the connecting member (350) to generate (or output) sound.

According to an embodiment of the present specification, when the connecting member (350) is made of a relatively hard material (or hard material), the vehicle interior material (130) connected to the connecting member (350) may be a vibration plate for sound generation (or output). For example, when the connecting member (350) is made of a relatively hard material (or hard material), the vibration of the first enclosure (311) may be more efficiently transmitted to the vehicle interior material (130). Since the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and the vehicle interior material (130) have a full-surface contact structure (or a full-surface joint structure) without a non-contact portion (or a non-contact area) via the connecting member (350), unnecessary vibration occurring between the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and the vehicle interior material (130) can be prevented, so that the total harmonic distortion characteristic can be reduced, and the acoustic characteristics and/or the sound pressure characteristics can be improved.

According to an embodiment of the present specification, the connecting member (350) may further include a first hole (350o) (or holes). For example, the connecting member (350) may further include a first hole (350o) that is connected to an opening (310o) in the enclosure (310). The first hole (350o) may be arranged to correspond to the opening (310o). The first hole (350o) may have the same shape as the opening (310o), and the embodiments of the present specification are not limited thereto. For example, the first hole (350o) may be an opening, a slit, a slot, a connecting hole, or an intermediate hole, and the embodiments of the present specification are not limited thereto.

According to an embodiment of the present specification, the vehicle interior material (130) may further include a second hole (135) (or hole, opening hole, or through hole). The second hole (135) (or hole) may include one hole or a plurality of holes. For example, the second hole (135), which is a single hole, may correspond to (or overlap) the opening (310o) and the first hole (350o). For example, the second hole (135), which is a single hole, may have a size equal to or larger than the opening (310o) and may have the same size as the first hole (350o). For example, the second holes (135), which are a plurality of holes, may be arranged with equal or different intervals. The second hole (135) may be arranged to correspond to (or overlap) the opening (310o) and/or the first hole (350o). For example, the second hole (135) (or hole) may be accommodated within the opening (310o) and/or the first hole (350o). For example, the second hole (135) may be a through hole, an opening, an aperture hole, a slit, a slot, an acoustic hole, an acoustic emission hole, or an acoustic output hole, and the embodiments of the present specification are not limited thereto.

According to an embodiment of the present specification, sound according to the vibration of the sound generating module (330) can be output to the interior space of the vehicle through the opening (310o), the first hole (350o), and the second hole (135). In addition, since the sound device (30) or the enclosure (310) vibrates the vehicle interior material (130) through the connecting member (350) and the sound according to the vibration of the vehicle interior material (130) can be output to the interior space of the vehicle, the acoustic characteristics and/or sound pressure characteristics of the sound including the low-pitched range can be improved, and sound having a wide directivity angle or three-dimensional sound can be output. For example, the sound device (30) according to another embodiment of the present specification can output sound toward the interior space of the vehicle by using the vehicle interior material (130) as an acoustic diaphragm, and can output realistic sound including multi-channel and/or three-dimensional sound toward the interior space of the vehicle, and can output sound having a wide directivity angle and/or three-dimensional sound.

According to an acoustic device (30) according to another embodiment of the present specification, since the rear surface (310a) of the enclosure (310) has a non-flat structure and the connecting member (350) causes the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and the vehicle interior material (130) to have a full-surface contact structure (or a full-surface joint structure) without a non-contact portion (or a non-contact area), unnecessary vibration occurring between the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and the vehicle interior material (130) can be prevented, so that the total harmonic distortion characteristic can be reduced, and thus the acoustic characteristics and/or the sound pressure characteristics can be improved.

Fig. 14 is a drawing showing an acoustic device according to another embodiment of the present specification. For example, Fig. 14 is another cross-sectional view taken along line III-III' shown in Fig. 10 according to another embodiment of the present specification.

Referring to FIG. 14, an acoustic device (30) according to another embodiment of the present specification may include an enclosure (310), a sound generating module (330), and a coupling member (320). The description of the enclosure (310), the sound generating module (330), and the coupling member (320) is substantially the same as that described with reference to FIGS. 3 to 6, and therefore, the same drawing reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified.

An acoustic device (30) according to another embodiment of the present specification may further include a soft member (360). The description of the soft member (360) is substantially the same as that described with reference to FIG. 8, and therefore, the description may be omitted or simplified herein.

According to another embodiment of the present specification, a soft member (360) may be disposed on the rear surface (310a) of the enclosure (310). The soft member (360) may be disposed between the enclosure (310) and the vehicle interior material (130). For example, the soft member (360) may be disposed between the first enclosure (311) and the vehicle interior material (130). For example, the vehicle interior material (130) may be connected or coupled to the enclosure (310) by the soft member (360). For example, the vehicle interior material (130) may be connected or coupled to the first surface (311r) of the first enclosure (311) by the soft member (360). Accordingly, the acoustic device (30) or the enclosure (310) may be connected or coupled to the vehicle interior material (130) by the soft member (360).

A vehicle interior material (130) according to another embodiment of the present disclosure may include one or more curved portions (or one or more bent portions) (136). A soft member (360) may be configured to correspond to the one or more curved portions (136). The soft member (360) may be in contact with the one or more curved portions (136). The soft member (360) may be in direct contact with the one or more curved portions (136). For example, the vehicle interior material (130) may include one or more curved portions (136) in contact with the soft member (360). The soft member (360) may be in contact with the entire vibration region of the vehicle interior material (130). The soft member (360) may be in direct contact with the entire vibration region of the vehicle interior material (130).

According to one embodiment of the present specification, the soft member (360) can be in direct contact with one or more curved portions (136) without a separate adhesive member or a separate intermediate member (or medium). For example, the soft member (350) can be in direct contact with the entire vibration range of the vehicle interior material (130) without a separate adhesive member or a separate intermediate member (or medium). The vibration generated by the sound generating module (330) can be transmitted to the entire vibration range of the vehicle interior material (130) including one or more curved portions (136) and a flat portion by the soft member (360). Accordingly, sound is generated (or output) according to the vibration of the entire vibration range of the vehicle interior material (130), so that the acoustic characteristics and/or sound pressure characteristics of the sound range including the low-pitched sound range generated by the sound generating module (330) can be improved.

According to one embodiment of the present specification, the soft member (360) may be made of a relatively soft material (or soft material) for connection (or coupling) with a vehicle interior material (130) including one or more curved portions (136) and a flat portion. For example, when one or more curved portions (136) are included in a vibration region of the vehicle interior material (130), the soft member (360) may be made of a relatively soft material. For example, the soft member (360) made of a soft material may be a soft member, a porous member, a buffer member, or a cushioning member, but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the soft member (360) may be composed of a single-sided tape, a single-sided sponge tape, a single-sided porous tape, a single-sided cushion tape, a double-sided tape, a double-sided sponge tape, a double-sided porous tape, or a double-sided cushion tape made of a relatively soft material, but the embodiments of the present specification are not limited thereto. The soft member (360) may be filled in one or more curved portions (136) of the vehicle interior material (130) or may be configured to cover or completely cover one or more curved portions (136) of the vehicle interior material (130).

According to one embodiment of the present specification, the soft member (360) may be disposed between the enclosure (310) and one or more curved portions (136) of the vehicle interior material (130). The soft member (360) may be disposed between the first enclosure (311) and one or more curved portions (136) of the vehicle interior material (130). For example, the acoustic device (30) or the first enclosure (311) may be connected or coupled to one or more curved portions (136) of the vehicle interior material (130) by the soft member (360). Accordingly, the soft member (360) may absorb external impact by filling in one or more curved portions (136) of the vehicle interior material (130) or covering one or more curved portions (136) of the vehicle interior material (130), thereby protecting the acoustic device (30).

According to one embodiment of the present specification, the soft member (360) may further include a hole (360o). For example, the soft member (360) may further include a hole (360o) connected to an opening (310o) in the sound generating module (330). The hole (360o) may be arranged corresponding to the opening (310o). The hole (360o) may have the same shape as the opening (310o), but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the vehicle interior material (130) may further include a hole (135). The vehicle interior material (130) may include one hole or a plurality of holes (135). For example, one hole (135) may correspond to (or overlap) the opening (310o) and the hole (360o). For example, one hole (135) may have a size equal to or larger than the opening (310o) and may have the same size as the hole (360o). The hole (135) may be arranged to correspond to (or overlap) the opening (310o) and/or the hole (360o). For example, the hole (135) may be accommodated within the opening (310o) and/or the hole (360o).

According to one embodiment of the present specification, sound according to the vibration of the sound generating module (330) can be output to the interior space of the vehicle through the opening (310o), the hole (360o), and the hole (135). In addition, the sound device (30) or the enclosure (310) can vibrate one or more curved portions (136) in the vehicle interior material (130) by the soft member (360), so that sound according to the vibration of the vehicle interior material (130) can be output to the interior space of the vehicle. Furthermore, since an external impact applied to the sound device (30) or the enclosure (310) can be absorbed by the soft member (360), the sound device (30) can be protected from the external impact.

According to an acoustic device (30) according to another embodiment of the present specification, since the rear surface (310a) of the enclosure (310) has a non-flat structure and a soft member (360) so that the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and the vehicle interior material (130) have a full-surface contact structure (or a full-surface joint structure) without a non-contact portion (or a non-contact area), unnecessary vibration occurring between the rear surface (310a) of the enclosure (310) (or the enclosure (310)) and the vehicle interior material (130) can be prevented, so that the total harmonic distortion characteristic can be reduced, and thus the acoustic characteristic and/or the sound pressure characteristic can be improved.

Fig. 15 is a drawing showing an acoustic device according to another embodiment of the present specification. Fig. 16 is a cross-sectional view taken along line V-V' shown in Fig. 15 according to another embodiment of the present specification. Fig. 17 is a cross-sectional view taken along line VI-VI' shown in Fig. 15 according to another embodiment of the present specification. Fig. 18 is an exploded perspective view of the acoustic device shown in Fig. 15 according to another embodiment of the present specification. For example, Fig. 18 is a drawing showing a method of connecting an acoustic device and a coupling part according to another embodiment of the present specification.

Referring to FIGS. 15 to 18, an acoustic device (30) according to another embodiment of the present specification may include an enclosure (310), a sound generating module (330), and a coupling member (320). The description of the enclosure (310), the sound generating module (330), and the coupling member (320) is substantially the same as that described with reference to FIGS. 3 to 9, and therefore, the same drawing reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified.

When the acoustic device (30) is connected to the vehicle interior material (130), the acoustic device (30) and the vehicle interior material (130) can be connected by an adhesive. When the acoustic device (30) is connected to the vehicle interior material (130) by an adhesive, there is a problem that it is difficult to rework or replace the acoustic device (30) when it is defective or breaks down, and there is a problem that the acoustic device (30) is damaged during rework or replacement. Accordingly, the inventors of the present specification have conducted various studies and experiments to facilitate rework or replacement of the acoustic device (30) connected to the vehicle interior material (130) and to reduce damage to the acoustic device (30). Through various studies and experiments, they have invented an acoustic device that is easy to rework or replace and does not cause damage during rework or replacement of the acoustic device (30). This will be described below.

An acoustic device (30) according to another embodiment of the present specification may further include a coupling portion (500).

The coupling part (500) may be configured to couple the enclosure (310) to the vehicle interior material (130) (or mounting object) on which the first enclosure (311) is mounted. The coupling part (500) may be configured to connect or couple the enclosure (310) and the vehicle interior material (130). For example, the coupling part (500) may be configured to fix the enclosure (310) mounted on the vehicle interior material (130). For example, the acoustic device (30) or the enclosure (310) may be connected or coupled to the vehicle interior material (130) by the coupling part (500). Sound resulting from the vibration of the sound generating module (330) may be output to the interior space of the vehicle through the coupling part (500). For example, the coupling member (500) may be a coupling means, a coupling structure, a cover structure, an acoustic cover member, an acoustic guide member, a waveguide member, or an acoustic emitting member, but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the coupling portion (500) can be accommodated or inserted into the opening (310o) of the first enclosure (311). The coupling portion (500) can be accommodated or inserted into the hole (135) of the vehicle interior material (130). The coupling portion (500) can be accommodated or inserted into the opening (310o) and the hole (135) of the first enclosure (311). For example, the hole (135) of the vehicle interior material (130) can be connected to the opening (310o). For example, the coupling portion (500) can be configured to be coupled to the first enclosure (311) through the hole (135) and the opening (310o) of the vehicle interior material (130).

The coupling portion (500) according to one embodiment of the present specification may further include a hollow portion (501). For example, the hollow portion (501) may be connected to the internal space (313) of the enclosure (310). For example, the hollow portion (501) may be connected to the internal space (313) of the enclosure (310) through the opening (310o) of the enclosure (310). For example, the hollow portion (501) may be connected to the first space (313a) through the opening (310o) of the first enclosure (311). For example, the hollow portion (501) may be configured to have a shape corresponding to the opening (310o) of the first enclosure (311). For example, the hollow portion (501) may be configured to have a shape corresponding to the opening (310o). For example, the hollow portion (501) may have a straight shape, but the embodiments of the present specification are not limited thereto. For example, the hollow portion (501) may include a slit shape having a long axis and a short axis, but the embodiments of the present specification are not limited thereto. For example, the opening (310o) may have a cross (+) shape or a star (*) shape, and thus the hollow portion (501) may have a cross (+) shape or a star (*) shape corresponding to the opening (310o).

According to one embodiment of the present specification, sound resulting from vibration of the sound generating module (330) can be output to the interior space of the vehicle by the hollow portion (501). For example, the hollow portion (501) may be a sound emission port or a sound output port, but the embodiments of the present specification are not limited thereto.

The coupling member (500) according to one embodiment of the present specification may further include a hollow member (502) and a latch member (503).

The hollow member (502) may include a hollow portion (501). The hollow member (502) may be connected or coupled to a hole (135) of the vehicle interior material (130). The hollow member (502) may be connected or coupled to the hole (135) of the vehicle interior material (130) and the opening (310o) of the enclosure (310). For example, the hollow member (502) may be connected or coupled to the hole (135) of the vehicle interior material (130) and the opening (310o) of the first enclosure (311). For example, the hollow member (502) may be received or inserted into the opening (310o) of the first enclosure (311) through the hole (135) of the vehicle interior material (130). For example, the hollow member (502) can be connected or coupled to the enclosure (310) or the first enclosure (311) through a hole (135) of the vehicle interior material (130).

The latch member (503) may be configured to be connected or coupled to the vehicle interior material (130) (or the mounting object). For example, the latch member (503) may be configured to be connected or coupled to the vehicle interior material (130) on which the enclosure (310) is mounted. The latch member (503) may be connected or coupled around the hole (135) of the vehicle interior material (130). The latch member (503) may be connected or coupled to an inner surface (130s) of the vehicle interior material (130) around the hole (135) of the vehicle interior material (130). For example, the inner surface (130s) of the vehicle interior material (130) may be a first surface, an interior surface, a rear surface, or a lower surface. For example, the latch member (503) may be a latch or the like, but the embodiments of the present specification are not limited thereto.

The latch member (503) may extend or protrude from one outer surface of the hollow member (502) to have a constant width. For example, one outer surface of the hollow member (502) may be adjacent to the inner surface (130s) of the vehicle interior material (130). For example, the other side of the hollow member (502) may be accommodated in the opening (310o) of the enclosure (310). For example, the latch member (503) may extend or protrude from one outer surface of the hollow member (502) to be parallel to or opposite the inner surface (130s) of the vehicle interior material (130). For example, the latch member (503) may be configured to have a plate shape corresponding to the shape of the hollow member (502).

The latch member (503) can cover the inner surface (130s) of the vehicle interior material (130) around the hole (135) of the vehicle interior material (130). For example, the latch member (503) can be in contact with or in close contact with the inner surface (130s) of the vehicle interior material (130) around the hole (135) of the vehicle interior material (130). Accordingly, the area around the hole (135) of the vehicle interior material (130) can be disposed or interposed between the latch member (503) and the enclosure (310).

The coupling portion (500) according to the embodiment of the present specification may further include a hook member (504).

The hook member (504) can be connected to the first side of the hollow member (502). The hook member (504) can be coupled to the first side (311i) of the enclosure (310) facing the vibration member (331) in the sound generating module (330) or the sound device (30). The hook member (504) can be coupled to the first side (311i) of the enclosure (310) in the interior space (313) of the enclosure (310). The hook member (504) can be received or inserted into the opening (310o) of the first enclosure (311). For example, the hook member (504) can be received or inserted into the opening (310o) of the first enclosure (311) through the vehicle interior material (130). For example, the latch member (503) may be connected to the second side of the hollow member (502). The latch member (503) may be coupled to an inner surface (130s) of a vehicle interior material (130) exposed to an interior space of the vehicle. For example, the latch member (503) may be coupled to an inner surface (130s) of a vehicle interior material (130) exposed to an interior space of the vehicle.

The enclosure (310) or the first enclosure (311) may further include a groove (311g). For example, the groove (311g) may be configured on a first surface (311i) in the internal space (313). For example, the groove (311g) may be configured around an opening (310o) of the first surface (311i) in the internal space (313).

The hook member (504) may be configured to correspond to the groove (311g) of the enclosure (310) or the first enclosure (311). For example, the hook member (504) may be connected or coupled to the groove (311g) of the enclosure (310) or the first enclosure (311). For example, the hook member (504) may be received (or inserted) into the opening (310o) through the vehicle interior material (130) and connected or coupled to the groove (311g). For example, the hook member (504) may be received (or inserted) into the opening (310o) through the vehicle interior material (130) and connected or coupled to the groove (311g) by a hook coupling method.

The hook member (504) may include an inclined surface (504s). For example, the groove (311g) and the inclined surface (504s) may be a fastening guide surface between the enclosure (310) and the coupling portion (500). For example, the hook member (504) may be a protrusion or a projection, but the embodiments of the present specification are not limited thereto. For example, the groove (311g) may be a concave portion or the like, but the embodiments of the present specification are not limited thereto.

An acoustic device (30) according to another embodiment of the present specification may be connected or coupled to a vehicle interior material (130) by a coupling member (500). For example, the acoustic device (30) may be easily connected or coupled to a vehicle interior material (130) by a latch member (503) and a hook member (504) of the coupling member (500).

Referring to FIG. 18, the coupling member (500) can be connected or coupled to the acoustic device (30) or the enclosure (310) through the hole (135) of the vehicle interior material (130) and the opening (310o) of the enclosure (310). For example, the coupling member (500) can be received or inserted into the opening (310o) of the first enclosure (311) through the hole (135) of the vehicle interior material (130) in the interior space of the vehicle (arrow direction). For example, the hook member (504) of the coupling member (500) can be connected or coupled to the opening (310o) of the first enclosure (311). For example, the hook member (504) of the coupling portion (500) can be inserted into (or received) the opening (310o) of the first enclosure (311) and connected or coupled to the groove (311g) of the first enclosure (311). For example, as the hollow member (502) of the coupling portion (500) is inserted into (or received) the opening (310o) of the first enclosure (311), the hook member (504) of the coupling portion (500) can be pushed (or compressed) toward the center (or inside) of the hollow portion (501) by elastic force, and then elastically restored onto the groove (311g) of the first enclosure (311) by elastic restoring force, so as to be connected or coupled to the opening (310o) of the first enclosure (311). For example, the inclined surface (504s) of the hook member (504) can facilitate insertion of the coupling member (500) and compression of the hook member (504) when the coupling member (500) is inserted into the opening (310o) of the first enclosure (311). For example, the hook member (504) can be connected or coupled to the groove (311g) of the first enclosure (311). For example, the hook member (504) can be coupled to the groove (311g) of the first enclosure (311) according to a hook coupling method.

According to one embodiment of the present specification, since the rear surface (310a) of the enclosure (310) includes an uneven structure, when the coupling portion (500) is coupled to the opening (310o) of the first enclosure (311), the vehicle interior material (130) can bend according to the uneven structure of the rear surface (310a) of the enclosure (310), so that the contact area between the rear surface (310a) of the enclosure (310) and the vehicle interior material (130) can be maximized without a non-contact portion (or non-contact area). For example, the vehicle interior material (130) can come into contact with (or be in close contact with) the entire rear surface (310a) of the enclosure (310) without a non-contact portion (or non-contact area) depending on the coupling force between the coupling portion (500) and the first enclosure (311).

According to another embodiment of the present specification, when the coupling portion (500) is coupled to the opening (310o) of the first enclosure (311), the first enclosure (311) having a non-flat structure can be bent toward the vehicle interior material (130), so that the contact area between the rear surface (310a) of the enclosure (310) (or the rear surface (311r) of the first enclosure (311)) and the vehicle interior material (130) can be maximized without a non-contact portion (or non-contact region). For example, the entire rear surface (310a) of the enclosure (310) (or the rear surface (311r) of the first enclosure (311)) can be brought into contact with (or in close contact with) the vehicle interior material (130) without a non-contact portion (or non-contact region) depending on the coupling force between the coupling portion (500) and the first enclosure (311).

According to another embodiment of the present specification, the acoustic device (30) can be connected or coupled to the vehicle interior material (130) by the coupling portion (500), so that reworking and/or replacement of the acoustic device (30) connected to the vehicle interior material (130) is easy, and damage to the acoustic device (30) and/or the sound generating module (330) can be prevented during reworking or replacement. Since the acoustic device (30) according to another embodiment of the present specification includes the coupling portion (500), the acoustic device (30) can be easily attached or mounted in a narrow area (or space) between the vehicle interior material (130) and the vehicle structure. According to another embodiment of the present specification, an acoustic device (30) includes a front contact structure (or front joining structure) between the enclosure (310) and the vehicle interior material (130) due to an uneven structure on the rear surface (310a) of the enclosure (310), so that unnecessary vibration occurring between the enclosure (310) and the vehicle interior material (130) can be prevented, and thus the total harmonic distortion characteristic can be reduced, so that the acoustic characteristics and/or the sound pressure characteristics can be improved.

An acoustic device (30) according to another embodiment of the present specification may further include one or more of the connecting member (350) described with reference to FIG. 7 and the soft member (360) described with reference to FIG. 8. For example, one or more of the connecting member (350) and the soft member (360) may be interposed (or arranged) between the enclosure (310) and the vehicle interior material (130). For example, one or more of the hole (350o) of the connecting member (350) and the hole (360o) of the soft member (360) may be arranged to correspond to the opening (310o) of the enclosure (310).

FIG. 19 is another cross-sectional view taken along line V-V' shown in FIG. 15 according to another embodiment of the present disclosure. FIG. 20 is another cross-sectional view taken along line VI-VI' shown in FIG. 15 according to another embodiment of the present disclosure. FIG. 21 is another exploded perspective view of the acoustic device shown in FIG. 15 according to another embodiment of the present disclosure. For example, FIG. 21 is a drawing showing a method of connecting an acoustic device and a coupling part according to another embodiment of the present disclosure. FIGS. 19 to 21 further configure a protrusion in the enclosure of the acoustic device described with reference to FIGS. 15 to 18. Accordingly, in the following description, the protrusion will be described, and the remaining components are the same or substantially the same as those described with respect to FIGS. 15 to 18, and therefore, the same reference numerals will be assigned thereto, and redundant descriptions thereof may be omitted or simplified. Accordingly, the descriptions of FIGS. 15 to 18 may be included in the descriptions of FIGS. 19 to 21.

Referring to FIGS. 19 to 21, an acoustic device (30) or enclosure (310) according to another embodiment of the present specification may further include a protrusion (315). For example, a first enclosure (311) of the enclosure (310) may further include a protrusion (315).

The protrusion (315) may surround the opening (310o) of the enclosure (310). For example, the protrusion (315) may be configured in the first enclosure (311) to surround the opening (310o). The protrusion (315) may include a hollow hole (or hole or aperture hole) (315o) corresponding to (connected to) the opening (310o).

The protrusion (315) may protrude from the second surface (311r) of the first enclosure (311) to have an opening (315o). The protrusion (315) may protrude from the rear surface (or outer surface) (311r) of the first plate (311a) of the first enclosure (311) to surround the opening (310o). For example, the protrusion (315) may protrude from the rear surface (or outer surface) (311r) of the first enclosure (311) or the first plate (311a) to have a hollow hole (315o) corresponding to (connected to) the opening (310o).

A portion (or an end portion) of the protrusion (315) can be accommodated or inserted into a hole (135) of the vehicle interior material (130). For example, the hole (135) of the vehicle interior material (130) can accommodate a portion (or an end portion) of the protrusion (315). Accordingly, sound generated by the vibration of the sound generating module (330) can be output to the interior space of the vehicle through the hollow hole (315o) of the protrusion (315) and the hole (135) of the vehicle interior material (130).

An acoustic device (30) according to another embodiment of the present specification may further include a coupling portion (500).

The coupling portion (500) may be connected or coupled with the protrusion (315) of the enclosure (310). The coupling portion (500) may include a hollow portion (501). The hollow portion (501) may be coupled with the internal space (313) of the enclosure (310) through the protrusion (315) and the opening (310o). For example, the hollow portion (501) may be coupled with the internal space (313) of the enclosure (310) through the hollow hole (315o) of the protrusion (315) and the opening (310o). For example, the coupling portion (500) may be configured to be received and coupled in the hollow hole (315o) of the protrusion (315) and coupled with one surface of the vehicle interior material (130) exposed to the interior space. For example, the coupling part (500) can be coupled to the protrusion (315) and connected to the internal space (313) of the enclosure (310) through the opening (310o). For example, the coupling part (500) can be coupled or connected to the enclosure (310) in the internal space (313) of the enclosure (310) through the hollow hole (315o) of the protrusion (315) and the opening (310o). Accordingly, sound resulting from the vibration of the sound generating module (330) can be output to the interior space of the vehicle through the hollow portion (501) of the coupling part (500).

Referring to FIG. 21, the coupling portion (500) can be connected or coupled to the protrusion (315) of the enclosure (310) through the hole (135) of the vehicle interior material (130) (in the direction of the arrow). For example, the coupling portion (500) can be connected or coupled to the protrusion (315) of the first enclosure (311) through the hole (135) of the vehicle interior material (130).

According to one embodiment of the present specification, the hook member (504) of the coupling portion (500) can be connected or coupled to the protrusion (315) of the first enclosure (311). For example, as the hollow member (502) of the coupling portion (500) is inserted into the opening (310o) of the enclosure (310) through the hollow hole (315o) of the protrusion (315) (arrow direction), the hook member (504) of the coupling portion (500) is pushed (or compressed) toward the center (or inside) of the hollow portion (501) by elastic force, and then elastically restored onto the groove (311g) of the first enclosure (311) by elastic restoring force, so that it can be connected or coupled to the opening (310o) of the first enclosure (311). For example, the inclined surface (504s) of the hook member (504) can facilitate insertion of the coupling member (500) and compression of the hook member (504) when the coupling member (500) is inserted (or received) into the opening (310o) of the first enclosure (311). For example, the hook member (504) can be connected or coupled to the groove (311g) of the first enclosure (311). For example, the hook member (504) can be coupled to the groove (311g) of the first enclosure (311) according to a hook coupling method.

An acoustic device (30) according to another embodiment of the present specification can have the same effect as the acoustic device (30) with reference to FIGS. 14 to 17. In addition, since the acoustic device (30) according to another embodiment of the present specification includes a protrusion (315) additionally configured in the enclosure (310), the coupling portion (500) can be easily connected or coupled to the protrusion (315) of the enclosure (310), thereby simplifying the connection process or coupling process between the vehicle interior material (130) and the acoustic device (30).

The acoustic device (30) according to another embodiment of the present specification may further include one or more of the connecting member (350) described with reference to FIG. 7 and the soft member (360) described with reference to FIG. 8. For example, one or more of the connecting member (350) and the soft member (360) may be interposed (or arranged) between the enclosure (310) and the vehicle interior material (130). For example, one or more of the hole (350o) of the connecting member (350) and the hole (360o) of the soft member (360) may be arranged to correspond to the protrusion (315) of the enclosure (310). For example, one or more of the hole (350o) of the connecting member (350) and the hole (360o) of the soft member (360) may be arranged to correspond to the hollow hole (315o) of the protrusion (315).

FIG. 22 is another cross-sectional view taken along line V-V' shown in FIG. 15 according to another embodiment of the present disclosure. FIG. 23 is another cross-sectional view taken along line VI-VI' shown in FIG. 15 according to another embodiment of the present disclosure. FIG. 24 is another exploded perspective view of the acoustic device shown in FIG. 15 according to another embodiment of the present disclosure. For example, FIG. 24 is a drawing showing a method of connecting an acoustic device and a coupling part according to another embodiment of the present disclosure. FIGS. 22 to 24 are configured by integrating a protrusion and a coupling part into the enclosure of the acoustic device described with reference to FIGS. 19 to 21. Accordingly, in the following description, the protrusion and the coupling part will be described, and the remaining components are the same or substantially the same as those described with respect to FIGS. 15 to 21, and therefore, the same reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified. Accordingly, the descriptions of FIGS. 15 to 21 may be included in the descriptions of FIGS. 22 to 24.

Referring to FIGS. 22 to 24, in an acoustic device (30) according to another embodiment of the present specification, a coupling portion (500) may be connected to or configured with a protrusion portion (315). For example, the coupling portion (500) and the protrusion portion (315) may be configured as an integral part. For example, the coupling portion (500) and the protrusion portion (315) may be configured by double injection using different materials, but the embodiments of the present specification are not limited thereto. According to one embodiment of the present specification, the coupling portion (500) and the protrusion portion (315) may be configured as a single part, thereby achieving the effect of uni-materialization. Since the description of the coupling portion (500) is substantially the same as that described with reference to FIGS. 15 to 17, the same drawing reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified.

A coupling member (500) according to another embodiment of the present specification may include a hollow member (502) and a latch member (503).

The hollow member (502) may be combined or integrated with the inner surface of the hollow hole (315o) of the protrusion (315). For example, the hollow member (502) and the protrusion (315) may be formed as one body and may be formed of different materials.

The hollow member (502) may include a hollow portion (501). The hollow member (502) may be inserted into (or received in) the protrusion (315). The hollow member (502) may be inserted into (or received in) the hollow hole (315o) of the protrusion (315). The hollow member (502) may be inserted into (or received in) the hollow hole (315o) of the protrusion (315) and connected or coupled to the opening (310o) of the enclosure (310) or the first enclosure (311).

The latch member (503) may be connected to the hollow member (502). The latch member (503) may be configured to be coupled to a vehicle interior material (130). For example, the latch member (503) may be configured to be coupled to a vehicle interior material (130) on which an enclosure (310) is mounted. For example, the latch member (503) may be configured to be coupled to a vehicle interior material (130) on which a first enclosure (311) is mounted. For example, the latch member (503) may be configured to be coupled to an inner surface (130s) of the vehicle interior material (130) through a hollow hole (315o) of a protrusion (315).

The hollow member (502) and the latch member (503) according to one embodiment of the present specification may be composed of a flexible material, but the embodiments of the present specification are not limited thereto. For example, the hollow member (502) and the latch member (503) may be composed of a rubber material or a silicone material, but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the coupling portion (500) and the protrusion portion (315) can be connected or coupled to the hole (135) of the vehicle interior material (130) (in the direction of the arrow) through the hollow portion (501). For example, since the latch member (503) is made of a flexible material, the sound generating module (330) or the sound device (30) can be connected or coupled to the hole (135) of the vehicle interior material (130) by movement (or folding and unfolding) (in the direction of the arrow) of the latch member (503).

An acoustic device (30) according to another embodiment of the present specification can have the same effect as the acoustic device (30) with reference to FIGS. 14 to 17. In addition, since the acoustic device (30) according to another embodiment of the present specification has the protrusion (315) of the enclosure (310) and the coupling portion (500) configured as an integral body, the connection process or coupling process between the vehicle interior material (130) and the acoustic device (30) can be simplified. According to one embodiment of the present specification, the protrusion (315) and the coupling portion (500) can be configured as a single component, thereby providing the effect of a uni-materialization.

The acoustic device (30) according to another embodiment of the present specification may further include one or more of the connecting member (350) described with reference to FIG. 7 and the soft member (360) described with reference to FIG. 8. For example, one or more of the connecting member (350) and the soft member (360) may be interposed (or arranged) between the enclosure (310) and the vehicle interior material (130). For example, one or more of the hole (350o) of the connecting member (350) and the hole (360o) of the soft member (360) may be arranged to correspond to the protrusion (315) of the enclosure (310). For example, one or more of the hole (350o) of the connecting member (350) and the hole (360o) of the soft member (360) may be arranged to correspond to the hollow hole (315o) of the protrusion (315).

Fig. 25 is a drawing showing an acoustic device according to another embodiment of the present specification. Fig. 26 is a cross-sectional view taken along line VII-VII' shown in Fig. 25 according to another embodiment of the present specification. Fig. 27 is a cross-sectional view taken along line VIII-VIII' shown in Fig. 25 according to another embodiment of the present specification. Figs. 25 to 27 are acoustic devices described with reference to Figs. 15 to 18 in which a connecting member is additionally configured. Accordingly, in the following description, the connecting member is described, and the remaining components are the same or substantially the same as those described with respect to Figs. 15 to 18, and therefore, the same reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified. Accordingly, the description of Figs. 15 to 18 may be included in the description of Figs. 25 to 27.

Referring to FIGS. 25 to 27, in an acoustic device (30) according to another embodiment of the present specification, a connecting member (380) may be located or configured between a vehicle interior (130) and a sound generating module (330). The connecting member (380) may be configured between a rear surface (310a) of the enclosure (310) and the vehicle interior (130). For example, the connecting member (380) may be configured between a first enclosure (311) and the vehicle interior (130). For example, the connecting member (380) may be configured between a second surface (311r) of the first enclosure (311) including a non-planar structure and the vehicle interior (130). For example, the connecting member (380) may be configured between the second surface (311r) of the first enclosure (311) including the uneven portions (311r1, 311r2) and the vehicle interior material (130). The connecting member (380) may be a second connecting member, a third intermediate member, a third buffer member, or a third pad member, but the embodiments of the present specification are not limited thereto.

The connecting member (380) may be composed of a different material from the connecting member (320) of the acoustic device (30). For example, the connecting member (380) may be composed of a different material from the first connecting member (321) of the connecting member (320). For example, the connecting member (380) may be composed of a material having an adhesive strength different from that of the first connecting member (321). Since the connecting member (380) is composed of a material having an adhesive strength different from that of the first connecting member (321), in the process of detaching or attaching (or reworking) the acoustic device (30) attached to the vehicle interior material (130), the detachment or attachment (or reworking) of the connecting member (380) from the vehicle interior material (130) may be easily performed. By this, the process of attaching or mounting the sound device (30) to the vehicle interior material (130) or the process of detaching or removing the sound device (30) from the vehicle interior material (130) can be facilitated.

The connecting member (380) may be coupled (or attached) to the rear surface of the enclosure (310) and may be in contact (or surface contact) with the outer surface of the vehicle interior material (130), but the embodiments of the present specification are not limited thereto. For example, when the connecting member (380) is coupled (or attached) to the rear surface (310a) of the enclosure (310) and simply in contact (or surface contact) with the outer surface of the vehicle interior material (130), the process of separating and detaching (or reworking) the connecting member (380) from the vehicle interior material (130) may be easy without damaging the acoustic device (30) or the vehicle interior material (130) in the process of separating or detaching (or reworking). For example, the outer surface of the vehicle interior material (130) may be a second surface, an exterior surface, a front surface, or an upper surface.

According to one embodiment of the present specification, the connecting member (380) may be composed of a single-sided tape, a single-sided adhesive tape, a single-sided foam tape, a single-sided adhesive foam tape, a single-sided pad, a single-sided foam pad, a single-sided adhesive foam pad, a single-sided pad member, a single-sided cushion member, a single-sided cushion pad, or a single-sided cushion tape, but the embodiments of the present specification are not limited thereto. For example, the connecting member (380) may be rubber, but the embodiments of the present specification are not limited thereto. For example, the rubber may be a dual synthetic rubber, ethylene propylene rubber, or urethane rubber, but the embodiments of the present specification are not limited thereto. For example, the ethylene propylene rubber may be ethylene propylene diene monomer (EPDM), but the embodiments of the present specification are not limited thereto. For example, the hardness of the EPDM may be 40 to 90, but the embodiments of the present specification are not limited thereto. For example, the tensile strength of EPDM may be 50 kg/cm ² to 200 kg/cm ² , but the embodiments of the present specification are not limited thereto. For example, the connecting member (380) may be made of high-elasticity rubber, but the embodiments of the present specification are not limited thereto. According to one embodiment of the present specification, since the connecting member (380) is made of rubber or the like, when the vibration of the enclosure (310) or the first enclosure (311) is transmitted to the vehicle interior material (130), the loss of the vibration can be prevented or minimized, and thereby the acoustic characteristics and/or sound pressure characteristics of the low-frequency range can be further improved.

According to one embodiment of the present specification, the connecting member (380) may further include a hole (380o). For example, the connecting member (380) may further include a hole (380o) that is connected to an opening (310o) in the enclosure (310) or the first enclosure (311).

The hole (380o) may be arranged to correspond to (or overlap) the opening (310o). The hole (380o) may have the same shape as the opening (310o), but the embodiments of the present specification are not limited thereto. For example, the hole (380o) may have the same shape as the opening (310o) and may have a size larger than the size of the opening (310o). Accordingly, sound resulting from the vibration of the sound generating module (330) may be output to the interior space of the vehicle through the opening (310o) and the hole (380o). For example, the hole (380o) may be a through hole, a fourth through hole, an opening, an opening hole, a slit, a slot, a connecting hole, or an intermediate hole, but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the hole (380o) may correspond to (or overlap) the hole (135) of the vehicle interior material (130). The hole (380o) may be between the hole (135) of the vehicle interior material (130) and the opening (310o) of the enclosure (310). For example, the hole (380o) may be between the hole (135) of the vehicle interior material (130) and the opening (310o) of the first enclosure (311). The hole (380o) may be connected to the opening (310o) of the enclosure (310). For example, the hole (380o) may be connected to the opening (310o) of the first enclosure (311). The hole (380o) may be arranged to correspond to the opening (310o). The hole (380o) of the connecting member (380) may have the same size as each of the opening (310o) and the hole (135), or may have a size larger than each of the opening (310o) and the hole (135). Accordingly, sound resulting from the vibration of the sound generating module (330) may be output to the interior space of the vehicle through the opening (310o), the hole (380o), and the hole (135).

The thickness (T3) of the connecting member (380) may be different from the thickness of at least one of the first connecting member (321) and the second connecting member (322). For example, the thickness (T3) of the connecting member (380) may be thicker than the thickness of at least one of the first connecting member (321) and the second connecting member (322). The thickness (T3) of the connecting member (380) may be 0.5 mm or more, but the embodiments of the present specification are not limited thereto. For example, the thickness (T3) of the connecting member (380) may be 0.5 mm to 3 mm, but the embodiments of the present specification are not limited thereto.

The coupling part (500) can be connected or coupled to the acoustic device (30) through the hole (135) of the vehicle interior material (130), the hole (380o) of the connecting member (380), and the opening (310o) of the enclosure (310). For example, the coupling part (500) can be connected or coupled to the opening (310o) of the first enclosure (311) through the hole (135) of the vehicle interior material (130) and the hole (380o) of the connecting member (380) in the interior space of the vehicle.

According to one embodiment of the present specification, the coupling member (500) may be connected or coupled to the acoustic device (30) or the enclosure (310) through the hole (135) of the vehicle interior material (130) in the interior space of the vehicle. For example, the coupling member (500) may be received or inserted into the hole (380o) of the coupling member (380) and the opening (310o) of the first enclosure (311) through the hole (135) of the vehicle interior material (130) in the interior space of the vehicle. For example, the hook member (504) of the coupling member (500) may be connected or coupled to the opening (310o) of the first enclosure (311). For example, the hook member (504) of the coupling portion (500) may be inserted (or received) into the opening (310o) of the first enclosure (311) and connected or coupled to the groove (311g) of the first enclosure (311) according to the hook coupling method.

According to another embodiment of the present specification, the connecting member (380) has compressive force (or contractive force) and elastic restoring force, so that it can be contracted or compressed by the connection between the connecting portion (500) and the first enclosure (311). The thickness (T3) of the connecting member (380) may be equal to or smaller than the thickness of the vehicle interior material (130).

The connecting member (380) may have an initial thickness before compression (or shrinkage), and may be compressed (or shrinked) to a thickness (or deformation thickness or compression thickness) (T3) thinner than the initial thickness depending on the pressure applied from the enclosure (310) by the coupling (or connection) of the coupling portion (500) and the enclosure (310). For example, when the acoustic device (30) is connected to the vehicle interior material (130) by the coupling portion (500) or assembly and/or reworking are completed, the thickness of the connecting member (380) may be compressed from the initial thickness to the compression thickness (T3), so that the vibration of the enclosure (310) can be efficiently transmitted to the vehicle interior material (130). For example, when the acoustic device (30) is separated (or detached) from the vehicle interior material (130) by separation of the connecting member (500), the connecting member (380) can be restored from the compressed thickness (T3) to the initial thickness by elastic restoring force.

According to one embodiment of the present specification, when the coupling portion (500) is coupled to the opening (310o) of the first enclosure (311), the connecting member (380) can be compressed (or shrunk) into a shape corresponding to each of the shape of the non-flat structure (or non-flat portion) of the rear surface (310a) of the enclosure (310) and the shape of the vehicle interior material (130) having one or more curved portions. Accordingly, the rear (310a) of the enclosure (310) and the vehicle interior material (130) have a full-surface contact structure (or full-surface joint structure) without a non-contact portion (or non-contact area) according to the compression (or contraction) of the connecting member (380) according to the bonding force between the joint portion (500) and the first enclosure (311), so that unnecessary vibration occurring between the enclosure (310) and the vehicle interior material (130) can be prevented, and thus the total harmonic distortion characteristic can be reduced, so that the acoustic characteristics and/or the sound pressure characteristics can be improved.

Since the acoustic device (30) according to another embodiment of the present specification includes a connecting member (380) made of a rubber material, in the process of separating or detaching the acoustic device (30) from the vehicle interior material (130) (or reworking), the process of separating and detaching (or reworking) the acoustic device (30) and the connecting member (380) from the vehicle interior material (130) can be easily performed without damaging the acoustic device (30) or the vehicle interior material (130).

Fig. 28 is another cross-sectional view taken along line VII-VII' shown in Fig. 25 according to another embodiment of the present specification. Fig. 29 is another cross-sectional view taken along line VIII-VIII' shown in Fig. 25 according to another embodiment of the present specification. Figs. 28 and 29 are drawings showing an embodiment in which a protrusion is additionally configured in the enclosure of the acoustic device described with reference to Figs. 25 to 27. Accordingly, in the following description, the protrusion is described, and the remaining components are the same or substantially the same as those described with respect to Figs. 25 to 27, and therefore, the same reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified. Accordingly, the description of Figs. 25 to 27 may be included in the description of Figs. 28 and 29.

Referring to FIGS. 27 and 29, an acoustic device (30) or an enclosure (310) according to another embodiment of the present specification may further include a protrusion (315). For example, a first enclosure (311) of the enclosure (310) may further include a protrusion (315).

The protrusion (315) can surround the opening (310o) of the enclosure (310). For example, the protrusion (315) can be configured in the first enclosure (311) to surround the opening (310o). For example, the protrusion (315) can protrude from the second surface (311r) of the first enclosure (311) to include a hollow hole (315o) corresponding to (connected to) the opening (310o). The protrusion (315) can protrude from the second surface (311r) of the first plate (311a) of the first enclosure (311) to surround the opening (310o).

A part (or an end) of the protrusion (315) can be received or inserted into a hole (135) of the vehicle interior material (130) through a hole (380o) of the connecting member (380). For example, the hole (135) of the vehicle interior material (130) can receive a part (or an end) of the protrusion (315). Accordingly, sound resulting from the vibration of the sound generating module (330) can be output to the interior space of the vehicle through the hollow hole (315o) of the protrusion (315) and the hole (135) of the vehicle interior material (130).

In an acoustic device (30) according to another embodiment of the present specification, the coupling portion (500) may be connected or coupled with the protrusion (315) of the enclosure (310) through the hole (135) of the vehicle interior material (130). For example, the coupling portion (500) may be connected or coupled with the protrusion (315) through the hole (135) of the vehicle interior material (130) in an interior space of the vehicle.

According to one embodiment of the present specification, the hook member (504) of the coupling portion (500) may be connected or coupled to the protrusion (315) of the first enclosure (311). For example, when the hollow member (502) of the coupling portion (500) is inserted into the opening (310o) of the enclosure (310) through the hollow hole (315o) of the protrusion (315), the hook member (504) of the coupling portion (500) may be pushed (or compressed) toward the center (or inside) of the hollow portion (501) by elastic force, and then elastically restored onto the groove (311g) of the first enclosure (311) by elastic restoring force, so as to be connected or coupled to the opening (310o) of the first enclosure (311). For example, the inclined surface (504s) of the hook member (504) can facilitate insertion of the coupling member (500) and compression of the hook member (504) when the coupling member (500) is inserted (or received) into the opening (310o) of the first enclosure (311). For example, the hook member (504) can be connected or coupled to the groove (311g) of the first enclosure (311). For example, the hook member (504) can be coupled to the groove (311g) of the first enclosure (311) according to a hook coupling method.

An acoustic device (30) according to another embodiment of the present specification can have the same effect as the acoustic device (30) with reference to FIGS. 25 to 27. In addition, since the acoustic device (30) according to another embodiment of the present specification includes a protrusion (315) additionally configured in the enclosure (310), the coupling portion (500) can be easily connected or coupled to the protrusion (315) of the enclosure (310), thereby simplifying the connection process or coupling process between the vehicle interior material (130) and the acoustic device (30).

Fig. 30 is another cross-sectional view taken along line VII-VII' shown in Fig. 25 according to another embodiment of the present specification. Fig. 31 is a plan view showing a vibration member and a vibration device according to another embodiment of the present specification. Figs. 30 and 31 show a sound generating module (330) described with reference to Figs. 28 and 29 in which at least one hole is additionally configured. In the following description, at least one hole is described, and the remaining configurations are substantially the same as those described with reference to Figs. 28 and 29, and therefore, the same reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified. Accordingly, the description of Figs. 28 and 29 may be included in the description of Figs. 30 and 31.

Referring to FIGS. 30 and 31, an acoustic device (30) according to another embodiment of the present specification may further include at least one hole (331o).

At least one hole (331o) may be configured in the sound generating module (330). At least one hole (331o) may be configured in the vibration member (331) of the sound generating module (330). The vibration member (331) may include at least one hole (331o). The vibration member (331) may include at least one hole (331o) configured around the vibration device (333, 335).

At least one hole (331o) may be configured to penetrate the vibrating member (331). For example, at least one hole (331o) may be configured to penetrate the vibrating member (331) along the thickness direction (Z) of the vibrating member (331). For example, at least one hole (331o) may be formed to penetrate vertically along the thickness direction (Z) of the vibrating member (331).

At least one hole (331o) may be configured to regulate air flow in the internal space (313) of the enclosure (310). For example, at least one hole (331o) may be configured to regulate air flow in the internal space (313) of the enclosure (310) spatially separated by the vibration member (331). For example, at least one hole (331o) may be configured to regulate air flow between a first space (313a) and a second space (313b) spatially separated by the vibration member (331) in the internal space (313) of the enclosure (310). For example, at least one hole (331o) may be a through hole, a fifth through hole, a first air hole, a first vent hole, a first ventilation hole, a first duct hole, a first connection hole, a first communication hole, or a first space connection portion, but the embodiments of the present specification are not limited thereto.

At least one hole (331o) according to one embodiment of the present specification may be configured as a polygon such as a circle, an oval, or a square, but the embodiments of the present specification are not limited thereto.

At least one hole (331o) may be configured to reduce the air pressure in the internal space (313) of the enclosure (310). For example, at least one hole (331o) may be configured to connect a first space (313a) and a second space (313b) that are spatially separated by the vibration member (331) in the internal space (313) of the enclosure (310). For example, the first space (313a) and the second space (313b) of the internal space (313) within the enclosure (310) may be connected (or communicated) with each other through at least one hole (331o). For example, at least one hole (331o) may be configured to reduce air pressure in the first space (313a) of the first enclosure (311), or in the first space (313a) provided between the vibration member (331) and the first enclosure (311). As a result, the low-frequency band (reproduction band) may be expanded, so that the acoustic characteristics and/or sound pressure characteristics of the low-frequency band may be improved. In addition, since the sound generating module (330) may vibrate more stably by the at least one hole (331o) in the vibration member (331), the acoustic characteristics and/or sound pressure characteristics may be further improved.

According to one embodiment of the present specification, at least one hole (331o) may be positioned adjacent to the vibration device (333, 335). For example, at least one hole (331o) may be positioned around the vibration device (333, 335). For example, at least one hole (331o) may be positioned adjacent to a side surface of the vibration device (333, 335). For example, the distance between the at least one hole (331o) and the vibration device (333, 335) may be smaller than the distance between the at least one hole (331o) and a side wall (or side surface) of the enclosure (310). For example, when the at least one hole (331o) is positioned away from the vibration device (333, 335), acoustic characteristics and/or sound pressure characteristics in the low-frequency range may be deteriorated.

According to one embodiment of the present specification, at least one hole (331o) may be formed in a vibration member (331) adjacent to a vibration device (333, 335) with the vibration device (333, 335) therebetween. For example, the vibration member (331) may include a first peripheral region adjacent to a first side of the vibration device (333, 335) and a second peripheral region adjacent to a second side of the vibration device (333, 335) opposite to the first side. For example, with respect to the first direction (X), the vibration member (331) may include a first peripheral region, a vibration region, and a second peripheral region. For example, in the vibration member (331), each of the first and second peripheral regions may be a hole region or an unplaced region of the vibration device (333, 335), and the vibration region may be an arranged region of the vibration device (333, 335). For example, the vibration member (331) may be configured in the first peripheral region and the second peripheral region, respectively, so that at least one hole (331o) has a symmetrical structure (or a left-right symmetrical structure) or an asymmetrical structure (or a left-right asymmetrical structure) with respect to the vibration device (333, 335).

According to one embodiment of the present specification, the vibration device (333, 335) may include a long side and a short side. The distance (or separation distance or shortest distance) between at least one hole (331o) and the short side of the vibration device (333, 335) may be expressed as a ratio to the short side length of the vibration device (333, 335). According to one embodiment of the present specification, the distance between at least one hole (331o) and the vibration device (333, 335) may be 60% or less of the short side length of the vibration device (333, 335).

At least one hole (331o) may be arranged closer to the vibration device (333, 335) than the coupling member (320). The coupling member (320) may include a first coupling member (321) and a second coupling member (322). For example, at least one hole (331o) may be arranged closer to the vibration device (333, 335) than the first coupling member (321) and the second coupling member (322). As a result, the acoustic characteristics and/or sound pressure characteristics in the low-frequency range may be improved.

According to one embodiment of the present specification, at least one hole (331o) may not overlap with the opening (310o). For example, at least one hole (331o) may be arranged to be spaced apart from the opening (310o). Accordingly, sound generated in the second space (313b) according to the vibration (or driving) of the vibration device (333, 335) may be output to the first space (313a) through at least one hole (331o), so that the acoustic characteristics and/or sound pressure characteristics in the low-frequency range may be improved.

An acoustic device (30) according to another embodiment of the present specification can have the same effect as the acoustic device (30) with reference to FIGS. 28 and 29. In addition, according to one embodiment of the present specification, sound generated in the rear of the vibration member (331) or the second space (313b) of the enclosure (310) according to the vibration (or driving) of the vibration device (333, 335) is output to the first space (313a) through at least one hole (331o) and output (or radiated) through the hollow portion (501) of the coupling portion (500), so that the acoustic characteristics and/or sound pressure characteristics of the low-frequency range can be further improved.

At least one hole (331o) described with reference to FIGS. 30 and 31 can be equally applied to the acoustic device (30) described with reference to FIGS. 3 to 27. For example, the acoustic device (30) described with reference to FIGS. 3 to 27 can further include at least one hole (331o) configured in the vibration member (331) of the sound generating module (330). Accordingly, the description of at least one hole (331o) described with reference to FIGS. 30 and 31 can be included in the description of FIGS. 3 to 27.

Fig. 32 is a drawing showing an acoustic device according to another embodiment of the present specification. Fig. 33 is a cross-sectional view taken along line IX-IX' shown in Fig. 32 according to another embodiment of the present specification. Figs. 32 and 33 show an acoustic device (30) described with reference to Figs. 25 to 29 with a modified enclosure (310). In the following description, the enclosure (310) is described, and the remaining components are substantially the same as those described with reference to Figs. 28 and 29, and therefore, the same reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified. Accordingly, in the description of Figs. 28 and 29, the description of the remaining components, excluding the description of the enclosure (310), may be included in the description of Figs. 32 and 33.

Referring to FIGS. 32 and 33, in an acoustic device (30) according to another embodiment of the present specification, the enclosure (310) may include a first enclosure (311). For example, the enclosure (310) may be configured with only the first enclosure (311) by removing (or omitting) the second enclosure (312) from the enclosure (310) described with reference to FIGS. 28 and 29.

The enclosure (310) or the first enclosure (311) may be connected to the sound generating module (330) with the internal space (313) therebetween. The enclosure (310) or the first enclosure (311) may be connected to the rear edge portion of the vibration member (331) with the internal space (313) therebetween.

According to another embodiment of the present specification, the vibration member (331) may be configured to cover the interior space (313) of the first enclosure (311). For example, the vibration member (331) may be configured to cover a portion of the interior space (313) of the first enclosure (311). The vibration member (331) may be configured to cover the first space (313a) of the first enclosure (311). For example, the vibration member (331) may be configured to cover a portion of the first space (313a) of the first enclosure (311).

When the enclosure (310) is composed of only the first enclosure (311), the acoustic characteristics and/or sound pressure characteristics of the acoustic device (30) can be further improved compared to when the enclosure (310) is composed of the first enclosure (311) and the second enclosure (312). For example, when the enclosure (310) is composed of only the first enclosure (311), the acoustic characteristics and/or sound pressure characteristics of the mid-low frequency range, for example, the frequency range of 2 kHz or less, can be further improved, and the sound reproduction band can be further expanded.

The acoustic device (30) according to another embodiment of the present specification may further include a coupling member (320) or a first coupling member (321). The first coupling member (321) may be between the vibration member (331) and the first enclosure (311). The description of the first coupling member (321) is substantially the same as that described with reference to FIGS. 3 to 6, and therefore, the same reference numerals are assigned thereto, and a duplicate description thereof is omitted.

The enclosure (310) described with reference to FIGS. 32 and 33 can be equally applied to the acoustic device (30) described with reference to FIGS. 3 to 27. For example, in the enclosure (310) of the acoustic device (30) described with reference to FIGS. 3 to 27, the second enclosure (312) can be removed (or omitted) and configured with only the first enclosure (311).

An acoustic device (30) according to another embodiment of the present specification may further include at least one hole (331o).

At least one hole (331o) may be configured in the vibration member (331). The vibration member (331) may include at least one hole (331o) configured around the vibration device (333, 335). The at least one hole (331o) may be configured to control the flow of air between the external space and the internal space (313) of the enclosure (310). For example, the at least one hole (331o) may control the air flow in the first space (313a) of the internal space provided between the enclosure (310) (or the first enclosure (311)) and the vibration member (331) to be fluid. Since the at least one hole (331o) is substantially the same as that described with reference to FIGS. 30 and 31, the same drawing reference numerals are assigned thereto, and a duplicate description thereof is omitted. Accordingly, the description of at least one hole (331o) described with reference to FIGS. 30 and 31 may be included in the description of FIGS. 32 and 33.

Fig. 34 is a drawing showing an acoustic device according to another embodiment of the present specification. Fig. 35 is a cross-sectional view taken along line X-X' shown in Fig. 34 according to another embodiment of the present specification. Figs. 34 and 35 show an acoustic device (30) described with reference to Figs. 32 and 33, in which a protective member is additionally configured. In the following description, the protective member is described, and the remaining components are substantially the same as those described with reference to Figs. 32 and 33, and therefore, the same reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified. Accordingly, the description of the acoustic device (30) described with reference to Figs. 32 and 33 may be included in the description of Figs. 34 and 35.

Referring to FIGS. 34 and 35, the acoustic device (30) according to the embodiment of the present specification may further include a protective member (410).

The protective member (410) may be disposed on the sound generating module (330). For example, the protective member (410) may cover the sound generating module (330). For example, the protective member (410) may be disposed on the second vibration device (335). For example, the protective member (410) may be disposed to cover the second vibration device (335).

In one embodiment of the present specification, the protective member (410) according to an embodiment may be made of rubber or sponge, but the embodiments of the present specification are not limited thereto. For example, the rubber may be dual synthetic rubber, ethylene propylene rubber, or urethane rubber, but the embodiments of the present specification are not limited thereto. For example, the protective member (410) may include a rubber material, or may be made of dual synthetic rubber, ethylene propylene rubber, or urethane rubber. For example, the ethylene propylene rubber may be ethylene propylene diene monomer (EPDM), but the embodiments of the present specification are not limited thereto. For example, the hardness of EPDM may be 40 to 90, but the embodiments of the present specification are not limited thereto. For example, the tensile strength of EPDM may be 50 kg/cm ² to 200 kg/cm ² , but the embodiments of the present specification are not limited thereto. For example, the minimum elongation of EPDM may be 200%, but the embodiments of the present specification are not limited thereto. For example, the operating temperature of EPDM may be -30°C to 110°C, but the embodiments of the present specification are not limited thereto. For example, the protective member (410) may be composed of high-elasticity rubber or low-elasticity rubber, but the embodiments of the present specification are not limited thereto. For example, the thickness of the protective member (410) may be 0.5 mm to 2 mm, but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, since a protective member (410) is configured on the sound generating module (330), the acoustic characteristics and/or sound pressure characteristics of the low-frequency range can be further supplemented (or improved), and the acoustic device (30) and/or the vibration device (333, 335) can be protected from impact. For example, the protective member (410) can be a sealing member, a sealing member, a buffering member, or a shock absorbing member, and the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, the protective member (410) may be composed of a different material from the first coupling member (321). For example, the protective member (410) may be composed of a material having a different adhesive strength from the first coupling member (321). Since the protective member (410) is composed of a material having a different adhesive strength from the adhesive strength of at least one of the first coupling member (321) and the second coupling member (322), it can protect the acoustic device (30). For example, since the protective member (410) is composed of rubber such as EPDM, it can enhance the sound pressure in the low-frequency range and protect the acoustic device (30).

According to one embodiment of the present specification, the protective member (410) can be connected or coupled to the vibration member (331) and/or the vibration device (335). The protective member (410) can be connected or coupled to the vibration member (331) and/or the second vibration device (335). For example, the protective member (410) can be configured to protect or secure the vibration member (331) and/or the vibration device (330). The protective member (410) can be secured to the vibration member (331) and/or the second vibration device (335) to protect the vibration member (331) and/or the second vibration device (335).

The vibration member (331) may include a first side and a second side that is different (or opposite) from the first side. For example, the enclosure (310) may be connected or coupled to the first side of the vibration member (331). The protective member (410) may be in contact with the second vibration device (335) and the second side of the vibration member (331). For example, the protective member (410) may be configured to cover the second vibration device (335) and the second side of the vibration member (331).

The protective member (410) may have the same size as the vibrating member (331), and the embodiments of the present specification are not limited thereto. For example, the protective member (410) may have a size larger than the vibrating device (333, 335) and smaller than the vibrating member (331), and the embodiments of the present specification are not limited thereto.

According to another embodiment of the present specification, the acoustic device (30) includes at least one of the first enclosure (311), the connecting member (380), and the protective member (410), so that the acoustic characteristics and/or the sound pressure characteristics of each of the low-frequency range and the mid-frequency range can be further improved, the sound reproduction band can be expanded, and the acoustic device (30) can be protected from external impact.

An acoustic device (30) according to another embodiment of the present specification may further include at least one hole (331o).

At least one hole (331o) may be configured in the vibration member (331). The vibration member (331) may include at least one hole (331o) configured around the vibration device (333, 335). The at least one hole (331o) may be configured to control the flow of air between the external space and the internal space (313) of the enclosure (310). For example, the at least one hole (331o) may control the air flow in the first space (313a) of the internal space provided between the enclosure (310) (or the first enclosure (311)) and the vibration member (331) to be fluid. Since the at least one hole (331o) is substantially the same as that described with reference to FIGS. 30 and 31, the same drawing reference numerals are assigned thereto, and a duplicate description thereof is omitted. Accordingly, the description of at least one hole (331o) described with reference to FIGS. 30 and 31 may be included in the description of FIGS. 34 and 35.

An acoustic device (30) according to another embodiment of the present specification may further include at least one hole (410h) (or connecting hole) in a protective member (410).

At least one hole (410h) of the protective member (410) may be configured to correspond to (or align with) at least one hole (331o) of the vibrating member (331). For example, at least one hole (410h) of the protective member (410) may be connected or directly connected to at least one hole (331o) of the vibrating member (331). For example, at least one hole (410h) may be a through hole, a sixth through hole, a second air hole, a second vent hole, a second ventilation hole, a second duct hole, a second connecting hole, a second communication hole, or a second space connecting portion, and the embodiments of the present specification are not limited thereto.

According to another embodiment of the present specification, the acoustic device (30) includes at least one of the first enclosure (311), at least one hole (331o) configured in the vibration member (331), and at least one hole (410h) configured in the protection member (410), so that the acoustic characteristics and/or sound pressure characteristics of each of the low-frequency range and the mid-frequency range can be further improved, and the sound reproduction band can be further expanded.

The inventors of the present disclosure recognized that acoustic characteristics vary depending on the structure of the coupling portion (500). Accordingly, the inventors of the present disclosure conducted various studies and experiments on the structure of the coupling portion (500). Through these various studies and experiments, they invented an acoustic device including a coupling portion (500) capable of improving acoustic characteristics and/or sound pressure characteristics, and a transportation device including the same. This is described below.

Fig. 36 is a drawing showing a joint according to another embodiment of the present specification. Fig. 37 is a cross-sectional view taken along line XI-XI' shown in Fig. 36 according to one embodiment of the present specification. Figs. 36 and 37 show a joint (500) modified from the acoustic device (30) described with reference to Figs. 15 to 35.

Referring to FIGS. 36 and 37, a coupling portion (500) according to another embodiment of the present specification may include a hollow member (502) having a hollow portion (501), and the hollow member (502). The coupling portion (500) may further include a latch member (503) and a chamfered portion (503a). The remaining components of the coupling portion (500) except for the chamfered portion (503a) are substantially the same as those described with reference to FIG. 6, and therefore, the same reference numerals are assigned thereto, and redundant descriptions thereof may be omitted or simplified. Accordingly, the description of the coupling portion (500) with reference to FIG. 6 may be included in the description of FIGS. 22 and 23.

The chamfered portion (503a) may be formed in the hollow portion (501). The chamfered portion (503a) may be formed in the hollow member (502). The chamfered portion (503a) may be formed in the first end (or lower surface) (500a) of the hollow member (502). For example, the chamfered portion (503a) may be formed in the hollow member (502) and the latch member (503). For example, the chamfered portion (503a) may be formed in the corner portion between the hollow member (502) and the latch member (503).

The chamfered portion (503a) according to one embodiment of the present specification may include a non-rectangular shape. For example, the chamfered portion (503a) may be configured such that the corner portion between the hollow member (502) and the latch member (503) has a non-rectangular shape. For example, the chamfered portion (503a) may include at least one of a curved shape (or a round shape) and an inclined surface. For example, the chamfered portion (503a) may have a curvature. For example, the chamfered portion (503a) may have a curvature (4R) of 4 mm, but the embodiments of the present specification are not limited thereto. For example, the curvature of the chamfered portion (503a) may vary depending on the length (L) of the latch member (503).

According to one embodiment of the present specification, the acoustic characteristics and/or sound pressure characteristics of the sound output through the hollow portion (501) of the coupling portion (500) may vary depending on the curvature of the chamfered portion (503a). For example, compared to a case where the chamfered portion (503a) has a rectangular shape, when the chamfered portion (503a) has a non-rectangular shape, peaks and/or dips in the low-pitched to high-pitched range may be improved, and the sound pressure balance characteristics and/or sound pressure flatness characteristics may be improved. Furthermore, as the curvature of the chamfered portion (503a) increases, the sound pressure flatness characteristics and/or sound pressure characteristics in the high-pitched range may be further improved.

Accordingly, according to one embodiment of the present specification, since the coupling portion (500) includes a chamfered portion (503a) having a round shape or an inclined surface, the acoustic characteristics and/or sound pressure characteristics can be improved in a sound range including a low-pitched sound range, and since the peak and/or dip in the high-pitched sound range can be improved, the sound pressure balance characteristics and/or sound pressure flatness characteristics can be improved.

The coupling portion (500) described with reference to FIGS. 36 and 37 can be equally applied to the acoustic device (30) described with reference to FIGS. 15 to 35. For example, in the acoustic device (30) described with reference to FIGS. 15 to 35, the enclosure (310) or the first enclosure (311) can be connected or coupled to the vehicle interior material (130) by the coupling portion (500) described with reference to FIGS. 36 and 37.

Fig. 38 is a drawing showing a vibration generator of a vibration device according to one embodiment of the present specification. Fig. 39 is a cross-sectional view taken along line XII-XII' shown in Fig. 38 according to one embodiment of the present specification. Fig. 40 is a cross-sectional view taken along line XIII-XIII' shown in Fig. 38 according to one embodiment of the present specification.

Referring to FIGS. 38 to 40, a sound generating module (330) according to one embodiment of the present specification may include a vibration device (333, 335). The vibration device (333, 335) may include one or more vibration generators (1310).

The vibration generator (1310) may include a piezoelectric material having piezoelectric properties. The vibration generator (1310) may vibrate (or displace or drive) a vibrating member (or vehicle interior material) according to the vibration (or displacement or drive) of the piezoelectric material in response to an electric signal (or voice signal or acoustic signal) applied to the piezoelectric material. For example, the vibration generator (1310) may vibrate (or displace or drive) by alternately repeating contraction and/or expansion by the piezoelectric effect (or piezoelectric property). For example, the vibration generator (1310) may vibrate (or displace or drive) in the vertical direction (or thickness direction) (Z) by alternately repeating contraction and/or expansion by the inverse piezoelectric effect. For example, the vibration generator (1310) may vibrate or mechanically displace (or vibrate or drive) a piezoelectric material including a piezoelectric ceramic in response to an electric signal applied from the outside.

The vibration generator (1310) may be composed of a piezoelectric material of a ceramic series capable of implementing relatively high vibrations, or may be composed of a piezoelectric ceramic having a perovskite series crystal structure. For example, the vibration generator (1310) may be a vibration generating element, a vibration film, a vibration generating film, a vibrator, an active vibrator, an active vibration generator, an actuator, an exciter, a film actuator, a film exciter, an ultrasonic actuator, or an active vibration member, and the embodiments of the present specification are not limited thereto.

A vibration generator (1310) according to one embodiment of the present specification may include a vibration generating unit (1311).

The vibration generating unit (1311) may be configured to vibrate by a piezoelectric effect according to a driving signal. For example, the vibration generating unit (1311) may include a piezoelectric vibration unit. The vibration generating unit (1311) may include at least one of a piezoelectric inorganic material and a piezoelectric organic material. For example, the vibration generating unit (1311) may be a vibration element, a piezoelectric element, a piezoelectric element unit, a piezoelectric element layer, a piezoelectric structure, a piezoelectric vibrating unit, or a piezoelectric vibrating layer, but the embodiments of the present specification are not limited thereto.

A vibration generating unit (1311) according to one embodiment of the present specification may include a vibration unit (1311a), a first electrode unit (1311b), and a second electrode unit (1311c).

The vibrating member (1311a) may include a piezoelectric material or an electroactive material having a piezoelectric effect. For example, the vibrating member (1311a) may be a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric composite layer, a piezoelectric composite, or a piezoelectric ceramic composite, but the embodiments of the present specification are not limited thereto.

The vibration unit (1311a) may be composed of a piezoelectric ceramic of a ceramic series capable of implementing relatively strong vibrations or may be composed of a piezoelectric ceramic having a perovskite series crystal structure. For example, the vibration unit (1311a) may include at least one or more of PbTiO ₃ , PbZrO ₃ , PbZrTiO ₃ , BaTiO ₃ , and SrTiO ₃ , but the embodiments of the present specification are not limited thereto.

The piezoelectric ceramic may be composed of a single-crystal ceramic having a single-crystal structure, or may be composed of a ceramic material having a polycrystalline structure or a polycrystalline ceramic. The piezoelectric material of the single-crystal ceramic may include α-AlPO ₄ , α-SiO ₂ , LiNbO ₃ , Tb ₂ (MoO ₄ ) ₃ , Li ₂ B ₄ O ₇ , or ZnO, but the embodiments of the present specification are not limited thereto. The piezoelectric material of the polycrystalline ceramic may include a lead zirconate titanate (PZT)-based material including lead (Pb), zirconium (Zr), and titanium (Ti), or a lead zirconate nickel niobate (PZNN)-based material including lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but the embodiments of the present specification are not limited thereto. For example, the vibrating member (1311a) may include at least one of CaTiO ₃ , BaTiO ₃ , and SrTiO ₃ that do not contain lead (Pb), but the embodiments of the present specification are not limited thereto.

The first electrode portion (1311b) may be placed on the first surface (or upper surface or front surface) (1311s1) of the vibrating portion (1311a). The first electrode portion (1311b) may have the same size as the vibrating portion (1311a) or may have a smaller size than the vibrating portion (1311a), but the embodiments of the present specification are not limited thereto.

The second electrode portion (1311c) may be disposed on a second surface (or lower surface or back surface) (1311s2) that is different from or opposite to the first surface (1311s1) of the vibrating portion (1311a). The second electrode portion (1311c) may have the same size as the vibrating portion (1311a) or a smaller size than the vibrating portion (1311a), but the embodiments of the present specification are not limited thereto. For example, the second electrode portion (1311c) may have the same shape as the vibrating portion (1311a), but the embodiments of the present specification are not limited thereto.

According to an embodiment of the present specification, at least one of the first electrode portion (1311b) and the second electrode portion (1311c) may be made of a transparent conductive material, a semitransparent conductive material, or an opaque conductive material. For example, the transparent or semitransparent conductive material may include indium tin oxide (ITO) or indium zinc oxide (IZO), but the embodiments of the present specification are not limited thereto. The opaque conductive material may include gold (Au), silver (Ag), platinum (Pt), palladium (Pd), molybdenum (Mo), magnesium (Mg), carbon, or silver (Ag) containing glass frit, or may be made of an alloy thereof, but the embodiments of the present specification are not limited thereto. For example, each of the first electrode portion (1311b) and the second electrode portion (1311c) may include silver (Ag) having low resistivity to improve the electrical characteristics and/or vibration characteristics of the vibration portion (1311a). For example, the carbon may be a carbon material including carbon black, ketjen black, carbon nanotubes, and graphite, but the embodiments of the present specification are not limited thereto.

The vibrating portion (1311a) can be polarized (or poled) by a constant voltage applied to the first electrode portion (1311b) and the second electrode portion (1311c) in a constant temperature atmosphere or a temperature atmosphere that changes from high temperature to room temperature, but the embodiments of the present specification are not limited thereto. For example, the polarization direction (or pole direction) formed in the vibrating portion (1311a) can be formed or oriented (or arranged) from the first electrode portion (1311b) to the second electrode portion (1311c), but is not limited thereto. For example, the polarization direction (or pole direction) formed in the vibrating portion (1311a) can be formed or oriented (or arranged) from the second electrode portion (1311c) to the first electrode portion (1311b).

The vibrating unit (1311a) can vibrate by alternately repeating contraction and/or expansion due to the inverse piezoelectric effect according to a driving signal applied from the outside to the first electrode unit (1311b) and the second electrode unit (1311c). For example, the vibrating unit (1311a) can vibrate in the vertical direction (or thickness direction) and the planar direction by the signal applied to the first electrode unit (1311b) and the second electrode unit (1311c). The vibrating unit (1311a) can improve the vibration characteristics, including the acoustic characteristics and/or sound pressure characteristics, of the vibration generator (1310), by being displaced (or vibrated or driven) by contraction and/or expansion in the planar direction.

A vibration generator (1310) according to one embodiment of the present specification may further include a first cover member (1313) and a second cover member (1315).

The first cover member (1313) may be arranged on the first surface of the vibration generating unit (1311). For example, the first cover member (1313) may be configured to cover the first electrode portion (1311b) of the vibration generating unit (1311). For example, the first cover member (1313) may be configured to have a larger size than the vibration generating unit (1311), but the embodiments of the present specification are not limited thereto. The first cover member (1313) may be configured to protect the first surface of the vibration generating unit (1311) and the first electrode portion (1311b).

The second cover member (1315) may be arranged on the second surface of the vibration generating unit (1311). For example, the second cover member (1315) may be configured to cover the second electrode portion (1311c) of the vibration generating unit (1311). For example, the second cover member (1315) may be configured to have a larger size than the vibration generating unit (1311), and may be configured to have the same size as the first cover member (1313), but the embodiments of the present specification are not limited thereto. The second cover member (1315) may be configured to protect the second surface of the vibration generating unit (1311) and the second electrode portion (1311c).

The first cover member (1313) and the second cover member (1315) according to one embodiment of the present specification may include the same or different materials. For example, each of the first cover member (1313) and the second cover member (1315) may be a polyimide film, a polyethylene terephthalate film, a polyethylene naphthalate film, or the like, but the embodiments of the present specification are not limited thereto.

The first cover member (1313) can be connected or coupled to the first surface of the vibration generating unit (1311) or the first electrode portion (1311b) via the first adhesive layer (1317). For example, the first cover member (1313) can be connected or coupled to the first surface of the vibration generating unit (1311) or the first electrode portion (1311b) via a film laminating process via the first adhesive layer (1317).

The second cover member (1315) can be connected or coupled to the second surface of the vibration generating unit (1311) or the second electrode unit (1311c) via the second adhesive layer (1319). For example, the second cover member (1315) can be connected or coupled to the second surface of the vibration generating unit (1311) or the second electrode unit (1311c) via a film laminating process via the second adhesive layer (1319).

Each of the first adhesive layer (1317) and the second adhesive layer (1319) according to the embodiments of the present specification may include an electrically insulating material that is adhesive and can be compressed and restored. For example, each of the first adhesive layer (1317) and the second adhesive layer (1319) may include an epoxy resin, an acrylic resin, a silicone resin, a urethane resin, an acrylic polymer, a silicone polymer, or a urethane polymer, but the embodiments of the present specification are not limited thereto.

The first adhesive layer (1317) and the second adhesive layer (1319) may be configured between the first cover member (1313) and the second cover member (1315) to surround the vibration generating unit (1311). For example, at least one of the first adhesive layer (1317) and the second adhesive layer (1319) may be configured to partially or completely surround the vibration generating unit (1311).

Either the first cover member (1313) or the second cover member (1315) may be connected or coupled to the vibration member (331) via the adhesive member (332, 334) illustrated in FIGS. 3 to 35.

Either the first cover member (1313) or the second cover member (1315) may be omitted. For example, either the first cover member (1313) or the second cover member (1315) may be configured to cover or protect at least one of the first side and the second side of the vibration generating unit (1311).

A vibration generator (1310) according to one embodiment of the present specification may further include a signal supply member (1320).

The signal supply member (1320) may be configured to supply a driving signal supplied from the driving circuit unit to the vibration generating unit (1311). The signal supply member (1320) may be configured to be electrically connected to the vibration unit (1311a). The signal supply member (1320) may be configured to be electrically connected to the first electrode unit (1311b) and the second electrode unit (1131c) of the vibration unit (1311a).

A portion of the signal supply member (1320) may be accommodated (or inserted) between the first cover member (1313) and the second cover member (1315). An end portion (or terminal portion or one side) of the signal supply member (1320) may be positioned or inserted (or accommodated) in a portion between one edge portion of the first cover member (1313) and one edge portion of the second cover member (1315). One edge portion of the first cover member (1313) and one edge portion of the second cover member (1315) may accommodate or cover the end portion (or terminal portion or one side) of the signal supply member (1320) from above and below. Thereby, the signal supply member (1320) may be integrated with the vibration generating unit (1311). Accordingly, the vibration device (313) or the vibration device (313) may be implemented in the form of a film integrated with the signal supply member (1320). For example, the signal supply member (1320) may be configured as a single component with the vibration generating unit (1311), thereby providing the effect of a uni-materialization. For example, the signal supply member (1320) may be configured as a signal cable, a flexible cable, a flexible printed circuit cable, a flexible flat cable, a single-sided flexible printed circuit, a single-sided flexible printed circuit board, a flexible multilayer printed circuit, or a flexible multilayer printed circuit board, but the embodiments of the present specification are not limited thereto.

A signal supply member (1320) according to one embodiment of the present specification may include a base member (1321) and a plurality of signal lines (1323a, 1323b). For example, the signal supply member (1320) may include a base member (1321), a first signal line (1323a), and a second signal line (1323b).

The base member (1321) may include a transparent or opaque plastic material, but the embodiments of the present specification are not limited thereto. The base member (1321) may have a constant width along the first direction (X) and may extend long along the second direction (Y) intersecting the first direction (X).

The first signal line (1323a) and the second signal line (1323b) are arranged on the first surface of the base member (1321) so as to be parallel to the second direction (Y), and may be spaced apart from each other or electrically isolated from each other along the first direction (X). The first signal line (1323a) and the second signal line (1323b) may be arranged parallel to each other on the first surface of the base member (1321). For example, the first signal line (1323a) and the second signal line (1323b) may be implemented in a line shape by patterning a metal layer (or conductive layer) formed or deposited on the first surface of the base member (1321), but the embodiments of the present specification are not limited thereto.

The ends (or terminal ends or one side) of the first signal line (1323a) and the second signal line (1323b) can be individually bent or curved by being separated from each other.

An end (or terminal end or one side) of the first signal line (1323a) may be electrically connected to a first electrode portion (1311b) of a vibration generating unit (1311). For example, an end (or terminal end or one side) of the first signal line (1323a) may be electrically connected to at least a part of the first electrode portion (1311b) of the vibration generating unit (1311) at one edge portion of the first cover member (1313). For example, an end (or terminal end or one side) of the first signal line (1323a) may be electrically directly connected to at least a part of the first electrode portion (1311b) of the vibration generating unit (1311). For example, the end (or terminal end or one side) of the first signal line (1323a) may be directly connected to or in direct contact with the first electrode portion (1311b) of the vibration generating unit (1311). For example, the end of the first signal line (1323a) may be electrically connected to the first electrode portion (1311b) via a conductive double-sided tape. Accordingly, the first signal line (1323a) may supply the first driving signal supplied from the driving circuit portion to the first electrode portion (1311b) of the vibration generating unit (1311).

An end (or terminal end or one side) of the second signal line (1323b) may be electrically connected to a second electrode portion (1311c) of the vibration generating unit (1311). For example, an end of the second signal line (1323b) may be electrically connected to at least a part of the second electrode portion (1311c) of the vibration generating unit (1311) at one edge portion of the second cover member (1315). For example, an end of the second signal line (1323b) may be electrically directly connected to at least a part of the second electrode portion (1311c) of the vibration generating unit (1311). For example, an end of the second signal line (1323b) may be directly connected to or in direct contact with the second electrode portion (1311c) of the vibration generating unit (311). For example, the end of the second signal line (1323b) can be electrically connected to the second electrode portion (1311c) via a conductive double-sided tape. Accordingly, the second signal line (1323b) can supply the second driving signal supplied from the driving circuit portion to the second electrode portion (1311c) of the vibration generating portion (1311).

A signal supply member (1320) according to one embodiment of the present specification may further include an insulating layer (1325).

An insulating layer (1325) may be placed on the first surface of the base member (1321) to cover each of the first signal line (1323a) and the second signal line (1323b) except for the end (or one side) of the signal supply member (1320).

An end (or one side) of a signal supply member (1320) including an end (or one side) of a base member (1321) and an end (or one side) (1325a) of an insulating layer (1325) may be inserted (or accommodated) between a first cover member (1313) and a second cover member (1315), and may be fixed between the first cover member (1313) and the second cover member (1315) by a first adhesive layer (1317) and a second adhesive layer (1319). Accordingly, the end (or one side) of the first signal line (1323a) can be maintained in a state of being electrically connected to the first electrode portion (1311b) of the vibration generating portion (1311), and the end (or one side) of the second signal line (1323b) can be maintained in a state of being electrically connected to the second electrode portion (1311c) of the vibration generating portion (1311). In addition, since the end (or one side) of the signal supply member (1320) is inserted (or received) and fixed between the vibration generating portion (1311) and the first cover member (1313), a poor connection between the vibration generating portion (1311) and the signal supply member (1320) due to movement of the signal supply member (1320) can be prevented.

According to one embodiment of the present specification, a portion of the signal supply member (1320) or a portion of the base member (1321) may be positioned or inserted (or accommodated) between the first cover member (1313) and the second cover member (1315), thereby allowing the signal supply member (1320) to be integrated with the vibration generating unit (1311). As a result, the vibration generating unit (1311) and the signal supply member (1320) may be configured as a single component, thereby providing the effect of a uni-materialization.

According to one embodiment of the present specification, since the first signal line (1323a) and the second signal line (1323b) of the signal supply member (1320) are integrated with the vibration generating unit (1311), a soldering process for electrical connection between the vibration generating unit (1311) and the signal supply member (1320) is not required, so that the structure and manufacturing process of the vibration device (313) can be simplified, and thus, there is an effect of improving the harmful process.

Fig. 41 is a drawing showing a vibrating unit according to another embodiment of the present specification. For example, Fig. 41 shows another embodiment of the vibrating unit described with reference to Figs. 38 to 40.

Referring to FIGS. 39 and 41, a vibrating unit (1311a) according to another embodiment of the present specification may include a plurality of first parts (1311a1) and a plurality of second parts (1311a2). For example, the plurality of first parts (1311a1) and the plurality of second parts (1311a2) may be alternately and repeatedly arranged along the second direction (Y) (or the first direction (X)).

Each of the plurality of first parts (1311a1) may include an inorganic material having a piezoelectric effect (or piezoelectric properties). For example, each of the plurality of first parts (1311a1) may include at least one of a piezoelectric inorganic material and a piezoelectric organic material. For example, each of the plurality of first parts (1311a1) may be an inorganic part, an inorganic material part, a piezoelectric part, a piezoelectric material part, or an electrically active part, but the embodiments of the present specification are not limited thereto.

According to one embodiment of the present specification, each of the plurality of first portions (1311a1) has a width parallel to the second direction (Y) (or the first direction (X)) and can extend along the first direction (X) (or the second direction (Y)). Each of the plurality of first portions (1311a1) is substantially the same as the vibrating portion (1311a) described with reference to FIGS. 38 to 40, and therefore, any redundant description thereof may be omitted or simplified.

Each of the plurality of second portions (1311a2) may be disposed between the plurality of first portions (1311a1). For example, each of the plurality of first portions (1311a1) may be disposed between two adjacent second portions (1311a2) among the plurality of second portions (1311a2). Each of the plurality of second portions (1311a2) may have a width parallel to the second direction (Y) (or the first direction (X)) and may extend along the first direction (X) (or the second direction (Y)). The width of the first portion (1311a1) may be the same as or different from the width of the second portion (1311a2). For example, the width of the first portion (1311a1) may be greater than the width of the second portion (1311a2). For example, the first portion (1311a1) and the second portion (1311a2) may include line shapes or stripe shapes having the same or different sizes, but the embodiments of the present specification are not limited thereto.

Each of the plurality of second portions (1311a2) may be configured to fill a gap between two adjacent first portions (1311a1). Each of the plurality of second portions (1311a2) may be configured to fill a gap between two adjacent first portions (1311a1) so as to be connected or bonded to a side surface of an adjacent first portion (1311a1). According to one embodiment of the present specification, each of the plurality of first portions (1311a1) and the plurality of second portions (1311a2) may be arranged (or arranged) parallel to each other on the same plane (or same layer). Accordingly, the vibrating portion (1311a) may be expanded to a desired size or length by the side coupling (or connection) of the first portion (1311a1) and the second portion (1311a2).

According to one embodiment of the present specification, each of the plurality of second parts (1311a2) can improve the durability of the first part (1311a1) by absorbing the impact applied to the first part (1311a1) and can provide flexibility to the vibration part (1311a). Each of the plurality of second parts (1311a2) can include an organic material having a ductile property. For example, the plurality of second parts (1311a2) can be one or more of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer, but the embodiments of the present specification are not limited thereto. For example, each of the plurality of second parts (1311a2) can be an organic part, an organic material part, an adhesive part, a stretchable part, a bending part, a damping part, or a ductile part, but the embodiments of the present specification are not limited thereto.

A first surface of each of the plurality of first portions (1311a1) and the plurality of second portions (1311a2) may be commonly connected to a first electrode portion (1311b). A second surface of each of the plurality of first portions (1311a1) and the plurality of second portions (1311a2) may be commonly connected to a second electrode portion (1311c). For example, one or both of the first electrode portions (1311b) and the second electrode portions (1311c) may be formed as a patterned electrode so as to correspond only to the plurality of first portions (1311a1).

According to another embodiment of the present specification, a vibration unit (1311a) may have a single thin film shape by arranging (or connecting) a plurality of first parts (1311a1) and a plurality of second parts (1311a2) on the same plane. Accordingly, a vibration generating unit (1311) or vibration generator (1310) including a vibration unit (1311a) according to another embodiment of the present specification may vibrate by the first part (1311a1) having vibration characteristics, and may be bent into a curved shape by the second part (1311a2) having flexibility.

Fig. 42 is a drawing showing a vibrating unit according to another embodiment of the present specification. For example, Fig. 42 shows another embodiment of the vibrating unit described with reference to Figs. 38 to 40.

Referring to FIG. 39 and FIG. 42, a vibrating portion (1311a) according to another embodiment of the present specification may include a plurality of first portions (1311a3) and a second portion (1311a4) disposed between the plurality of first portions (1311a3).

Each of the plurality of first parts (1311a3) may be arranged to be spaced apart from each other along each of the first direction (X) and the second direction (Y). For example, each of the plurality of first parts (1311a3) may have a hexahedral shape having the same size as each other and may be arranged in a grid shape, but the embodiments of the present specification are not limited thereto. For example, each of the plurality of first parts (1311a3) may have a circular plate, an oval plate, or a polygonal plate shape having the same size as each other, but the embodiments of the present specification are not limited thereto.

Since each of the plurality of first parts (1311a3) is substantially identical to the first part (1311a1) described with reference to FIG. 41, any redundant description thereof may be omitted or simplified.

The second portion (1311a4) may be arranged between a plurality of first portions (1311a3) along each of the first direction (X) and the second direction (Y). The second portion (1311a4) may be configured to fill a gap between two adjacent first portions (1311a3), to be adjacent to each of the plurality of first portions (1311a3), or to surround each of the plurality of first portions (1311a3), thereby being connected or bonded to the adjacent first portions (1311a3). The second portion (1311a4) is substantially the same as the second portion (1311a2) described with reference to FIG. 41, and therefore, a redundant description thereof may be omitted or simplified.

A first surface of each of the plurality of first portions (1311a3) and second portions (1311a4) may be commonly connected to a first electrode portion (1311b). A second surface of each of the plurality of first portions (1311a3) and second portions (1311a4) may be commonly connected to a second electrode portion (1311c). According to another embodiment of the present specification, at least one of the first electrode portions (1311b) and the second electrode portions (1311c) may be formed in a pattern electrode shape corresponding only to the plurality of first portions (1311a3).

According to another embodiment of the present specification, a vibration unit (1311a) may have a single thin film shape by having a plurality of first parts (1311a3) and second parts (1311a4) arranged (or connected) on the same plane. Accordingly, a vibration generating unit (1311) or vibration generator (1310) including a vibration unit (1311a) according to another embodiment of the present specification may vibrate by the first part (1311a3) having vibration characteristics, and may be bent into a curved shape by the second part (1311a4) having flexibility.

FIG. 43 is a drawing illustrating a vibration generator of a vibration device according to another embodiment of the present disclosure. For example, FIG. 43 illustrates a vibration device including one or more vibration generators described with reference to FIG. 9.

Referring to FIGS. 9 and 43, a vibration device (333, 335) according to another embodiment of the present specification may include two or more vibration generators (333A, 333B, 335A, 335B). For example, the vibration device (333, 335) may include a first vibration generator (333A, 335A) and a second vibration generator (333B, 335B).

The first vibration generator (333A, 335A) and the second vibration generator (333B, 335B) may be overlapped or stacked with each other so as to displace (or drive or vibrate) in the same direction to maximize the amplitude displacement of the vibration device (333, 335) and/or the amplitude displacement of the vibration member. For example, the first vibration generator (333A, 335A) and the second vibration generator (333B, 335B) may have substantially the same size, but the embodiments of the present specification are not limited thereto. For example, the first vibration generator (333A, 335A) and the second vibration generator (333B, 335B) may have substantially the same size within an error range in the manufacturing process. By this, the first vibration generator (333A, 335A) and the second vibration generator (333B, 335B) can maximize the amplitude displacement of the vibration device (333, 335) and/or the amplitude displacement of the vibration member (331).

According to one embodiment of the present specification, either the first vibration generator (333A, 335A) or the second vibration generator (333B, 335B) may be connected or coupled to the vibration member (131) via the adhesive member (332, 334) illustrated in FIGS. 3 to 35. For example, the first vibration generator (333A, 335A) may be connected or coupled to the vibration member (331) via the adhesive member (332, 334).

Each of the first vibration generator (333A, 335A) and the second vibration generator (333B, 335B) is identical or substantially identical to the vibration generating unit (1311) described with reference to FIGS. 38 to 42, and therefore, the same drawing reference numerals are assigned thereto, and any redundant description thereof may be omitted or simplified.

A vibration device (333, 335) according to another embodiment of the present specification may further include an intermediate member (333M, 335M).

The intermediate member (333M, 335M) may be disposed or connected between the first vibration generator (333A, 335A) and the second vibration generator (333B, 335B). For example, the intermediate member (333M, 335M) may be disposed or connected between the second cover member (1315) of the first vibration generator (333A, 335A) and the first cover member (1313) of the second vibration generator (333B, 335B). For example, the intermediate member (333M, 335M) may be an adhesive member or a connecting member, and the embodiments of the present specification are not limited thereto.

The intermediate members (333M, 335M) according to the embodiments of the present specification may be formed of a material including an adhesive layer having excellent adhesion or bonding strength to each of the first vibration generators (333A, 335A) and the second vibration generators (333B, 335B). For example, the intermediate members (333M, 335M) may include a foam pad, a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, or an adhesive, and the embodiments of the present specification are not limited thereto. For example, the adhesive layer of the intermediate members (333M, 335M) may include epoxy, acrylic, silicone, or urethane, and the embodiments of the present specification are not limited thereto. For example, the adhesive layer of the intermediate members (333M, 335M) may include a urethane-based material (or material) having relatively soft properties. By this, vibration loss due to displacement interference between the first vibration generator (333A, 335A) and the second vibration generator (333B, 335B) is minimized, or each of the first vibration generator (333A, 335A) and the second vibration generator (333B, 335B) can be freely displaced (or vibrated or driven).

A vibration device (333, 335) according to another embodiment of the present specification includes a first vibration generator (333A, 335A) and a second vibration generator (333B, 335B) that are stacked (or overlapped or superimposed) to vibrate (or displace or drive) in the same direction, thereby maximizing or increasing the displacement amount or amplitude displacement. This maximizes or increases the displacement amount (or bending force or driving force) or amplitude displacement of the vibrating member.

FIG. 44 is a drawing showing a transport device according to one embodiment of the present disclosure. FIG. 45 is a drawing showing a transport device according to one embodiment of the present disclosure. FIG. 46 is a drawing showing a sound generating device arranged on the roof of the transport device of FIGS. 44 and 45. FIG. 47 is a drawing showing a sound generating device arranged on the roof and seat of the transport device of FIGS. 44 and 45.

Referring to FIGS. 44 to 47, a transport device (10) according to an embodiment of the present disclosure may include a vehicle interior (130) and a first sound generating device (30-1). For example, the vehicle interior (130) may output sound according to the vibration of one or more first sound generating devices (30-1). For example, the vehicle interior (130) may be exposed to an interior space.

The first sound generating device (30-1) may include at least one sound generator (31A to 31G) arranged in at least one of the dashboard (130A), the filler interior material (130B), the roof interior material (130C), the door interior material (130D), the seat interior material (130E), the handle interior material (130F), and the floor interior material (130G). For example, the first sound generating device (30-1) may include at least one of the first to seventh sound generators (31A to 31G), and may output sound through one or more channels.

A first sound generator (31A) according to one embodiment of the present specification may be arranged between a dashboard panel and a dashboard (130A), and configured to indirectly or directly vibrate the dashboard (130A) to output sound according to the vibration of the dashboard (130A). According to one embodiment of the present specification, the first sound generator (31A) includes the sound device (30) described with reference to FIGS. 3 to 43, and therefore, a redundant description thereof will be omitted. For example, the first sound generator (31A) may be a dashboard speaker.

According to one embodiment of the present specification, at least one of the dash panel and the dashboard (130A) may include a first region corresponding to the driver's seat (DS), a second region corresponding to the passenger's seat (PS), and a third region (or intermediate region) between the first region and the second region. At least one of the dash panel and the dashboard (130A) may include a fourth region that is inclined while facing the passenger's seat (PS). According to one embodiment of the present specification, the first sound generator (31A) may be arranged to vibrate at least one of the first to fourth regions of the dashboard (130A). For example, the first sound generator (31A) may be configured to output sound at a frequency of 150 Hz to 20 kHz. For example, the first sound generator (31A) configured to vibrate at least one of the first to fourth areas of the dashboard (130A) may have the same or different sound output characteristics.

A second sound generator (31B) according to one embodiment of the present specification may be arranged between a filler panel and a filler interior material (130B), and configured to indirectly or directly vibrate the filler interior material (130B) to output sound according to the vibration of the filler interior material (130B). According to one embodiment of the present specification, the second sound generator (31B) includes the sound device (30) described with reference to FIGS. 3 to 30 , and therefore, a redundant description thereof will be omitted. For example, the second sound generator (31B) may be a filler speaker or a tweeter speaker.

According to one embodiment of the present specification, the filler panel may include a first filler (or A-pillar) disposed on both sides of the front windshield, a second filler (or B-pillar) disposed on both sides of the center of the vehicle body, and a third filler (or C-pillar) disposed on both sides of the rear of the vehicle body. The filler interior material (130B) may include a first filler interior material (130B1) covering the first filler, a second filler interior material (130B2) covering the second filler, and a third filler interior material (130B3) covering the third filler.

According to one embodiment of the present specification, the second sound generator (31B) is disposed at least one of between the first filler and the first filler internal material (130B1), between the second filler and the second filler internal material (130B2), and between the third filler and the third filler internal material (130B3), thereby vibrating at least one of the first to third filler internal materials (130B1, 130B2, 130B3). For example, the second sound generator (31B) may be configured to output sound from 2 kHz to 20 kHz or may be configured to output sound from 150 Hz to 20 kHz. For example, the second sound generator (31B) configured to vibrate at least one of the first to third filler inserts (130B1, 130B2, 130B3) may have the same or different sound output characteristics.

Referring to FIGS. 45 to 47, a third sound generator (31C) according to one embodiment of the present specification may be arranged between a loop frame (or loop panel) and a loop lining (130C), and configured to vibrate the loop lining (130C) to output sound according to the vibration of the loop lining (130C). For example, the third sound generator (31C) may indirectly or directly vibrate the loop lining (130C) to output sound according to the vibration of the loop lining (130C). According to one embodiment of the present specification, the third sound generator (31C) includes the sound device (30) described with reference to FIGS. 3 to 43, and therefore, a redundant description thereof will be omitted. For example, the third sound generator (31C) may be a loop speaker.

Referring to FIG. 46, the roof interior material (130C) may include a first region corresponding to the driver's seat (DS), a second region corresponding to the passenger's seat (PS), a third region corresponding between the driver's seat (DS) and the passenger's seat (PS), a fourth region corresponding to the first rear seat (BS1) behind the driver's seat (DS), a fifth region corresponding to the second rear seat (BS2) behind the passenger's seat (PS), a sixth region corresponding between the first rear seat (BS1) and the second rear seat (BS2), and a seventh region between the third region and the sixth region. For example, the third sound generator (31C) may be arranged to vibrate at least one of the first to seventh regions of the roof interior material (130C). For example, the third sound generator (31C) may be configured to output sound from 150 Hz to 20 kHz. For example, the third sound generators (31C) configured to vibrate at least one of the first to seventh regions of the loop interior material (130C) may have the same or different sound output characteristics. For example, at least one of the third sound generators (31C) configured to vibrate at least one of the first to seventh regions of the loop interior material (130C) may be configured to output sound from 2 kHz to 20 kHz, and the rest may be configured to output sound from 150 Hz to 20 kHz.

Referring to FIGS. 44 and 45, a fourth sound generator (31D) according to one embodiment of the present specification may be arranged between a door frame and a door interior material (130D) and configured to indirectly or directly vibrate the door interior material (130D) to output sound according to the vibration of the door interior material (130D). According to one embodiment of the present specification, the fourth sound generator (31D) includes the sound device (30) described with reference to FIGS. 3 to 43, and therefore, a duplicate description thereof will be omitted. For example, the fourth sound generator (31D) may be a door speaker.

According to one embodiment of the present specification, at least one of the door frame and the door lining (130D) may include an upper region, a middle region, and a lower region based on the height direction (Z) of the transport device (10). For example, the fourth sound generator (31D) may be arranged in at least one of the upper region, the middle region, and the lower region between the door frame and the door lining (130D), thereby vibrating at least one of the upper region, the middle region, and the lower region of the door lining (130D).

According to one embodiment of the present specification, the upper region of the door lining (130D) may have a relatively small radius of curvature. The fourth sound generator (31D) for vibrating the upper region of the door lining (130D) may include an acoustic device having flexible characteristics as described with reference to FIGS. 41 and 42.

According to one embodiment of the present specification, the door frame may include a first door frame (or left front door frame), a second door frame (or right front door frame), a third door frame (or left rear door frame), and a fourth door frame (or right rear door frame).

According to one embodiment of the present specification, the door interior material (130D) may include a first door interior material (or left front door interior material) (130D1) covering a first door frame, a second door interior material (or right front door interior material) (130D2) covering a second door frame, a third door interior material (or left rear door interior material) (130D3) covering a third door frame, and a fourth door interior material (or right rear door interior material) (130D4) covering a fourth door frame. For example, the fourth sound generator (31D) is disposed in at least one of the upper region, the middle region, and the lower region between each of the first to fourth door frames and each of the first to fourth door interior materials (130D1 to 130D4), and can vibrate at least one of the upper region, the middle region, and the lower region of each of the first to fourth door interior materials (130D1 to 130D4).

According to one embodiment of the present specification, the fourth sound generator (31D) configured to vibrate the upper region of each of the first to fourth door interior materials (130D1 to 130D4) may be configured to output sound from 2 kHz to 20 kHz or may be configured to output sound from 150 Hz to 20 kHz.

According to one embodiment of the present specification, the fourth sound generator (31D) configured to vibrate at least one of the middle and lower regions of the first to fourth door interior materials (130D1 to 130D4) may be configured to output sound at a frequency of 150 Hz to 20 kHz. The fourth sound generator (31D) configured to vibrate the middle and lower regions of each of the first to fourth door interior materials (130D1 to 130D4) may be configured to output sound at a frequency of 150 Hz to 20 kHz. For example, the fourth sound generator (31D) configured to vibrate at least one of the middle and lower regions of the first to fourth door interior materials (130D1 to 130D4) may be at least one of a woofer, a mid-woofer, and a sub-woofer. For example, the fourth sound generator (31D) configured to vibrate the middle and lower regions of each of the first to fourth door interior materials (130D1 to 130D4) may be at least one of a woofer, a mid-woofer, and a sub-woofer.

The sounds output from the fourth sound generator (31D) disposed in the first door interior (130D1) and the fourth sound generator (31D) disposed in the second door interior (130D2) may be combined and output. For example, the sounds output from at least one of the fourth sound generator (31D) disposed in the first door interior (130D1) and the fourth sound generator (31D) disposed in the second door interior (130D2) may be combined and output. In addition, the sounds output from the fourth sound generator (31D) disposed in the third door interior (130D3) and the sounds output from the fourth sound generator (31D) disposed in the fourth door interior (130D4) may be combined and output.

According to one embodiment of the present specification, the upper regions of each of the first to fourth door interior materials (130D1 to 130D4) may include a first upper region adjacent to the dashboard (130A), a second upper region adjacent to the first to third rear seats (BS1, BS2, BS3), and a third upper region between the first upper region and the second upper region. For example, the fourth sound generator (31D) may be disposed in at least one of the first to third upper regions of at least one of the first to fourth door interior materials (130D1 to 130D4). For example, a fourth sound generator (31D) configured to vibrate at least one of the first to third upper regions of the first to fourth door interior materials (130D1 to 130D4) may be configured to output sound at 2 kHz to 20 kHz or may be configured to output sound at 150 Hz to 20 kHz.

Referring to FIGS. 44, 45, and 47, a fifth sound generator (31E) according to one embodiment of the present specification may be arranged between a seat frame and a seat upholstery (130E), and configured to indirectly or directly vibrate the seat upholstery (130E) to output sound according to the vibration of the seat upholstery (130E). According to one embodiment of the present specification, the fifth sound generator (31E) includes the sound device (30) described with reference to FIGS. 3 to 43, and therefore, a redundant description thereof will be omitted. For example, the fifth sound generator (31E) may be a seat speaker or a headrest speaker.

According to one embodiment of the present specification, the seat frame may include a first seat frame (or driver's seat frame), a second seat frame (or passenger's seat frame), a third seat frame (or first rear seat frame), a fourth seat frame (or second rear seat frame), and a fifth seat frame (or third rear seat frame). According to one embodiment of the present specification, the seat upholstery (130E) may include a first seat upholstery surrounding the first seat frame, a second seat upholstery surrounding the second seat frame, a third seat upholstery surrounding the third seat frame, a fourth seat upholstery surrounding the fourth seat frame, and a fifth seat upholstery surrounding the fifth seat frame.

According to one embodiment of the present specification, at least one of the first to fifth seat frames may include a seat bottom frame, a seat back frame, and a headrest frame. The seat interior material (130E) may include a seat bottom interior material (130E1) surrounding the seat bottom frame, a seat back interior material (130E2) surrounding the seat back frame, and a headrest interior material (130E3) surrounding the headrest frame. At least one of the seat bottom interior material (130E1), the seat back interior material (130E2), and the headrest interior material (130E3) may include an inner interior material and an outer interior material. For example, the inner interior material may include a foam layer. For example, the outer interior material may include a skin layer including fiber or leather. For example, the outer interior material may further include a base layer made of a plastic material that supports the skin layer.

According to one embodiment of the present specification, the fifth sound generator (31E) is arranged at least one of between the seat back frame and the seat back inner material (130E2) and between the headrest frame and the headrest inner material (130E3), thereby vibrating at least one of the outer inner material of the seat back inner material (130E2) and the outer inner material of the headrest inner material (130E3).

According to one embodiment of the present specification, the fifth sound generator (31E) disposed in at least one of the driver's seat (DS) and the passenger seat (PS) may be disposed in at least one of between the seat back frame and the seat back interior material (130E2) and between the headrest frame and the headrest interior material (130E3).

According to one embodiment of the present specification, the fifth sound generator (31E) disposed in at least one of the first to third rear seats (BS1, BS2, BS3) may be disposed between the headrest frame and the headrest interior material (130E3). For example, at least one of the first to third rear seats (BS1, BS2, BS3) may include at least one fifth sound generator (31E) disposed between the headrest frame and the headrest interior material (130E3).

According to one embodiment of the present specification, the fifth sound generator (31E) for vibrating at least one seat back upholstery (130E2) of the driver's seat (DS) and the passenger's seat (PS) may be configured to output sound from 150 Hz to 20 kHz. For example, the fifth sound generator (31E) for vibrating at least one headrest upholstery (130E3) of the driver's seat (DS), the passenger's seat (PS), and the first to third rear seats (BS1, BS2, BS3) may be configured to output sound from 2 kHz to 20 kHz or may be configured to output sound from 150 Hz to 20 kHz.

Referring to FIGS. 44 and 45, a sixth sound generator (31F) according to one embodiment of the present specification may be arranged between a handle frame and a handle internal material (130F), and configured to indirectly or directly vibrate the handle internal material (130F) to output sound according to the vibration of the handle internal material (130F). According to one embodiment of the present specification, the sixth sound generator (31F) includes the sound device (30) described with reference to FIGS. 3 to 43, and therefore, a redundant description thereof will be omitted. For example, the sixth sound generator (31F) may be a handle speaker or a steering speaker.

According to one embodiment of the present specification, the sixth sound generator (31F) can indirectly or directly vibrate the steering wheel interior material (130F) to provide the driver with a sound according to the vibration of the steering wheel interior material (130F). The sound output by the sixth sound generator (31F) can be the same as or different from the sound output by at least one of the first to fifth sound generators (31A to 31E). In one embodiment of the present specification, the sixth sound generator (31F) can output a sound provided only to the driver. In another embodiment of the present specification, the sound output by the sixth sound generator (31F) and the sound output by at least one of the first to fifth sound generators (31A to 31E) can be combined and output.

Referring to FIGS. 44 and 45, the seventh sound generator (31G) is arranged between the floor panel and the floor lining (130G), and can be configured to indirectly or directly vibrate the floor lining (130G) to output sound according to the vibration of the floor lining (130G).

The seventh sound generator (31G) may be disposed between the floor panel and the floor upholstery (130G) disposed between the driver's seat (DS) and the passenger seat (PS) and the third rear seat (BS3). For example, the seventh sound generator (31G) includes the sound device (30) described with reference to FIGS. 3 to 43, and therefore, a duplicate description thereof will be omitted. For example, the seventh sound generator (31G) may be configured to output sound from 150 Hz to 20 kHz. For example, the seventh sound generator (31G) may be a floor speaker, a floor speaker, or an under speaker.

Referring to FIGS. 44 to 46, a transportation device or vehicle (10) according to one embodiment of the present specification may further include a second sound generating device (30-2) disposed in a vehicle interior material (130) exposed to an interior space. For example, a transportation device or vehicle (10) according to one embodiment of the present specification may include only the second sound generating device (30-2) instead of the first sound generating device (30-1), or may include both the first sound generating device (30-1) and the second sound generating device (30-2).

According to one embodiment of the present specification, the vehicle interior (130) may further include a rear view mirror (130H), an overhead console (130I), a rear package interior (130J), a glove box (130K), and a sun visor (130L).

The second sound generating device (30-2) may include at least one sound generator (31H to 31L) arranged in at least one of the rear view mirror (130H), the overhead console (130I), the rear package interior (130J), the glove box (130K), and the sun visor (130L). For example, the second sound generating device (30-2) may include at least one of the eighth to twelfth sound generators (31H to 31L), and may output sound through one or more channels.

Referring to FIGS. 44 to 46, the eighth sound generator (31H) is arranged in the rear view mirror (130H) and can be configured to indirectly or directly vibrate the rear view mirror (130H) to output sound according to the vibration of the rear view mirror (130H).

The eighth sound generator (31H) may be positioned between the mirror housing connected to the body structure and the rearview mirror (130H) supported by the mirror housing. According to one embodiment of the present specification, the eighth sound generator (31H) includes the sound device (30) described with reference to FIGS. 3 to 43, and therefore, a duplicate description thereof will be omitted. For example, the eighth sound generator (31H) may be configured to output sound from 150 Hz to 20 kHz. For example, the eighth sound generator (31H) may be a mirror speaker.

Referring to FIGS. 46 and 47, the ninth sound generator (31I) is arranged on the overhead console (130I) and can be configured to indirectly or directly vibrate the console cover of the overhead console (130I) to output sound according to the vibration of the interior material of the overhead console (130I).

According to one embodiment of the present specification, the overhead console (130I) may include a console box embedded in a roof panel or roof frame, a lighting fixture arranged in the console box, and a console cover covering the lighting fixture and the console box.

The ninth sound generator (31I) is positioned between the console box and the console cover of the overhead console (130I) and can indirectly or directly vibrate the console cover. According to one embodiment of the present specification, the ninth sound generator (31I) includes the sound device (30) described with reference to FIGS. 3 to 43, and therefore, a duplicate description thereof will be omitted. For example, the ninth sound generator (31I) may be configured to output sound from 150 Hz to 20 kHz. For example, the ninth sound generator (31I) may be a console speaker or a lighting speaker.

According to one embodiment of the present disclosure, the transport device or vehicle (10) may further include a central light box positioned in the central region of the roof interior material (130C), a central light fixture positioned in the central light box, and a central light cover covering the central light fixture. In this case, a ninth sound generator (31I) may be additionally positioned between the central light box of the central light fixture and the central light cover, and may further vibrate the central light cover.

Referring to FIGS. 44 and 45, the 10th sound generator (31J) is arranged in the rear package interior material (130J) and can be configured to indirectly or directly vibrate the rear package interior material (130J) to output sound according to the vibration of the rear package interior material (130J).

The rear package interior material (130J) may be positioned behind the first to third rear seats (BS1, BS2, BS3). For example, a portion of the rear package interior material (130J) may be positioned under the rear window (230C).

The tenth sound generator (31J) is arranged on the rear surface of the rear package interior material (130J) and can indirectly or directly vibrate the rear package interior material (130J). According to one embodiment of the present specification, the tenth sound generator (31J) includes the sound device (30) described with reference to FIGS. 3 to 43, and therefore, a duplicate description thereof will be omitted. For example, the tenth sound generator (31J) may be a rear speaker.

According to one embodiment of the present specification, the rear package interior material (130J) may include a first region corresponding to the rear of the first rear seat (BS1), a second region corresponding to the rear of the second rear seat (BS2), and a third region corresponding to the rear of the third rear seat (BS3). For example, the tenth sound generator (31J) may be arranged in at least one of the first to third regions of the rear package interior material (130J) and may vibrate at least one of the first to third regions of the rear package interior material (130J). For example, the tenth sound generator (31J) may be configured to output sound from 150 Hz to 20 kHz. For example, the tenth sound generator (31J) configured to vibrate at least one of the first to third regions of the rear package interior material (130J) may have the same or different sound output characteristics.

Referring to FIGS. 44 and 45, the 11th sound generator (31K) is placed in the glove box (130K) and can be configured to indirectly or directly vibrate the glove box (130K) to output sound according to the vibration of the glove box (130K).

The glove box (130K) can be placed on the dashboard (130A) corresponding to the front of the passenger seat (PS).

The eleventh sound generator (31K) is arranged on the inner surface of the glove box (130K) and can vibrate the glove box (130K) indirectly or directly. According to one embodiment of the present specification, the eleventh sound generator (31K) includes the sound device (30) described with reference to FIGS. 3 to 43, and therefore, a duplicate description thereof will be omitted. For example, the eleventh sound generator (31K) may be configured to output sound from 150 Hz to 20 kHz, or may be one or more of a woofer, a mid-woofer, and a sub-woofer. For example, the eleventh sound generator (31K) may be a glove box speaker.

Referring to Fig. 46, the 12th sound generator (31L) is placed on the sun visor (130L) and can be configured to indirectly or directly vibrate the sun visor (130L) to output sound according to the vibration of the sun visor (130L).

The sun visor (130L) may include a first sun visor (130L1) corresponding to the driver's seat (DS) and a second sun visor (130L2) corresponding to the passenger seat (PS).

The 12th sound generator (31L) is arranged on at least one of the first sun visor (130L1) and the second sun visor (130L2), and can indirectly or directly vibrate at least one of the first sun visor (130L1) and the second sun visor (130L2). According to one embodiment of the present specification, the 12th sound generator (31L) includes the sound device (30) described with reference to FIGS. 3 to 43, and therefore, a duplicate description thereof will be omitted. For example, the 12th sound generator (31L) may be configured to output sound from 150 Hz to 20 kHz. For example, the 12th sound generator (31L) may be a sun visor speaker.

According to one embodiment of the present specification, at least one of the first sun visor (130L1) and the second sun visor (130L2) may further include a sun visor mirror. In this case, the twelfth sound generator (31L) may be configured to indirectly or directly vibrate at least one sun visor mirror of the first sun visor (130L1) and the second sun visor (130L2). Since the twelfth sound generator (31L) that vibrates the sun visor mirror includes the sound device (30) described with reference to FIGS. 3 to 43, a redundant description thereof will be omitted.

Referring to FIGS. 44 to 46, a transport device or vehicle (10) according to one embodiment of the present disclosure may further include a third sound generating device (30-3) disposed on a vehicle window (230). For example, the transport device or vehicle (10) may include the third sound generating device (30-3) instead of at least one of the first sound generating device (30-1) and the second sound generating device (30-2), or may include all of the first to third sound generating devices (30-1, 30-2, 30-3).

The third sound generating device (30-3) may include at least one sound generator (31N, 31O) arranged on the vehicle window (230). For example, the third sound generating device (30-3) may include at least one of the 13th and 14th sound generators (31N, 31O), and may output sound through one or more channels. For example, the third sound generating device (30-3) may be a transparent sound generating device.

The vehicle window (230) of the transport device or vehicle (10) may be at least one of a front window and a side window. The vehicle window (230) may further include at least one of a rear window and a roof window.

A vehicle window (230) according to one embodiment of the present specification may be configured to be entirely transparent. A vehicle window (230) according to another embodiment of the present specification may include a transparent portion and a translucent portion surrounding the transparent portion. A vehicle window (230) according to another embodiment of the present specification may include a transparent portion and an opaque portion surrounding the transparent portion.

The acoustic device (30) described with reference to FIGS. 3 to 43 may be configured to be transparent or translucent. For example, when the vehicle window (230) is entirely transparent, the acoustic device (30) may be configured to be transparent and may be placed in the middle or peripheral region of the vehicle window (230). When the vehicle window (230) includes a translucent portion or an opaque portion, the acoustic device (30) may be configured to be translucent or opaque and may be placed in the translucent portion or the opaque portion of the vehicle window (230). For example, the acoustic device (30) may be a transparent acoustic device.

At least one of the 13th and 14th sound generators (31N, 31O) according to one embodiment of the present specification may include a transparent or translucent sound device (30). For example, when at least one of the 13th and 14th sound generators (31N, 31O) includes a sound device (30), at least one of the 13th and 14th sound generators (31N, 31O) may indirectly or directly vibrate a vehicle window (230) to output sound according to the vibration of the vehicle window (230).

According to one embodiment of the present specification, the vehicle window (230) may include a front window, a side window (230B), and a rear window. According to one embodiment of the present specification, the vehicle window (230) may further include a roof window (230D). For example, when the transportation device or vehicle (10) includes a roof window (230D), a portion of the area of the roof frame and the roof interior material (130C) may be replaced by the roof window (230D). For example, when the transportation device or vehicle (10) includes a roof window (230D), the third sound generator (31C) may be configured to vibrate an edge portion (PP) of the roof interior material (130C) surrounding the roof window (230D).

Referring to FIGS. 45 to 47, the 13th sound generator (31N) according to one embodiment of the present specification is arranged on the side window (230B) and can be configured to output sound according to its own vibration or to indirectly or directly vibrate the side window (230B) to output sound according to the vibration of the side window (230B).

According to one embodiment of the present specification, the side glass window (230B) may include a first side glass window (or right front window) (230B2), a second side glass window (or left rear window) (230B3), a third side glass window (or right rear window) (230B4), and a fourth side glass window (or left front window).

According to one embodiment of the present specification, the thirteenth sound generator (31N) may be arranged in at least one of the first to third side windows (230B2, 230B3, 230B4). For example, at least one of the first to third side windows (230B2, 230B3, 230B4) may include at least one thirteenth sound generator (31N).

The 13th sound generator (31N) is arranged on at least one of the first to third side glass windows (230B2, 230B3, 230B4) and can output sound by its own vibration or by indirectly or directly vibrating the corresponding side glass windows (230B2, 230B3, 230B4). For example, the 13th sound generator (31N) can be configured to output sound from 150 Hz to 20 kHz. For example, the 13th sound generators (31N) arranged on at least one of the first to third side glass windows (230B2, 230B3, 230B4) can have the same or different sound output characteristics. For example, the thirteenth sound generator (31N) positioned on at least one of the first to third side windows (230B2, 230B3, 230B4) may be configured to output sound at a frequency of 150 Hz to 20 kHz. For example, the thirteenth sound generator (31N) may be a side window speaker.

Referring to FIG. 44, the 14th sound generator (31O) according to one embodiment of the present specification may be arranged on the rear window (230C) and configured to output sound according to its own vibration or to indirectly or directly vibrate the rear window (230C) to output sound according to the vibration of the rear window (230C).

According to one embodiment of the present specification, the rear window (230C) may include a first region corresponding to the rear of the first rear seat (BS1), a second region corresponding to the rear of the second rear seat (BS2), and a third region corresponding to the rear of the third rear seat (BS3). According to one embodiment of the present specification, the fourteenth sound generator (31O) may be arranged in at least one of the first to third regions of the rear window (230C) and may vibrate at least one of the first to third regions of the rear window (230C) to output sound. For example, the fourteenth sound generators (31O) arranged in at least one of the first to third regions of the rear window (230C) may have the same or different sound output characteristics. For example, the fourteenth sound generator (31O) positioned in at least one of the first to third areas of the rear window (230C) may be configured to output sound from 150 Hz to 20 kHz, or may be one or more of a woofer, a mid-woofer, and a sub-woofer. For example, the fourteenth sound generator (31O) may be a rear window speaker.

Referring to FIGS. 44 and 45, a transport device or vehicle (10) according to one embodiment of the present specification may further include a woofer speaker (WS) disposed on at least one of a dashboard (130A), a door frame, and a rear package interior material (130J).

According to one embodiment of the present specification, a woofer speaker (WS) may be one or more of a woofer, a mid-woofer, and a sub-woofer. For example, the woofer speaker (WS) may be a speaker that outputs sound from 60 Hz to 150 Hz. Accordingly, the woofer speaker (WS) can enhance the low-frequency characteristics of sound output into an indoor space by outputting sound from 60 Hz to 150 Hz.

According to one embodiment of the present specification, the woofer speaker (WS) may be disposed in at least one of the first and second regions of the dashboard (130A). According to one embodiment of the present specification, the woofer speaker (WS) may be disposed in each of the first to fourth door frames of the door frame, and may be exposed to a lower region of each of the first to fourth door interior materials (130D1 to 130D4) of the door interior material (130D). For example, the woofer speaker (WS) may be disposed in at least one of the first to fourth door frames of the door frame, and may be exposed to a lower region of at least one of the first to fourth door interior materials (130D1 to 130D4) of the door interior material (130D). For example, the fourth sound generator (31D) arranged in the lower region of at least one of the first to fourth door interior materials (130D1 to 130D4) may be replaced with a woofer speaker (WS).

Referring to FIG. 45, a transport device (10) according to an embodiment of the present specification may further include a garnish member (130P) covering a portion of a vehicle interior material (130) exposed to an interior space, and a fourth sound generating device (30-4). For example, the fourth sound generating device (30-4) may be disposed on the garnish member (130P) and the vehicle interior material (130) to output sound. For example, at least one of the garnish member (130P) and the vehicle interior material (130) may output sound according to the vibration of the fourth sound generating device (30-4).

The garnish member (130P) may be configured to cover a portion of the door interior material (130D) exposed to the interior space, but the embodiments of the present specification are not limited thereto. For example, the garnish member (130P) may be configured to cover a portion of one or more of the dashboard (130A), the filler interior material (130B), and the roof interior material (130C) exposed to the interior space.

The garnish member (130P) according to the embodiment of the present specification may include a metallic material having material properties suitable for generating sound according to vibration, or may include a non-metallic material (or a composite non-metallic material). For example, the metallic material of the garnish member (130P) may include one or more of stainless steel, aluminum (Al), an aluminum (Al) alloy, magnesium (Mg), a magnesium (Mg) alloy, and a magnesium lithium (Mg-Li) alloy, but the embodiments of the present specification are not limited thereto. The non-metallic material (or composite non-metallic material) of the garnish member (130P) may include one or more of wood, plastic, glass, cloth, fiber, rubber, paper, carbon, and leather, but the embodiments of the present specification are not limited thereto. For example, the garnish member (130P) may include a metallic material having material properties suitable for generating high-pitched sound, but the embodiments of the present specification are not limited thereto. For example, the high frequency range may have a frequency of 1 kHz or more or 3 kHz or more, but the embodiments of the present specification are not limited thereto.

The fourth sound generating device (30-4) may be placed between the garnish member (130P) and the vehicle interior material (130). For example, the fourth sound generating device (30-4) may be a garnish speaker, but the embodiments of the present specification are not limited thereto.

The fourth sound generating device (30-4) according to the embodiment of the present specification may include one or more of the sound devices (30) described with reference to FIGS. 3 to 43. The fourth sound generating device (30-4) may be placed in the main interior material or vehicle interior material (130) and the garnish member (130P), and may be connected or coupled to the garnish member (130P).

The fourth sound generating device (30-4) according to the embodiment of the present specification may be configured to output sound into an indoor space by indirectly or directly vibrating the garnish member (130P). For example, the fourth sound generating device (30-4) may be configured to output high-pitched sound, but the embodiments of the present specification are not limited thereto.

A transportation device or vehicle (10) according to an embodiment of the present specification can output sound to an interior space by using the vehicle interior (130) as an acoustic diaphragm by outputting sound to the interior space through at least one of a first sound generating device (30-1) disposed on a vehicle interior (130), a second sound generating device (30-2) disposed on a vehicle interior (130) exposed to an interior space, a third sound generating device (30-3) disposed on a vehicle window (230), and a fourth sound generating device (30-4) disposed on a garnish member (130P), and can output multi-channel surround stereoscopic sound.

Figure 48 is a drawing showing the sound output characteristics of an acoustic device according to an embodiment and experimental example of the present specification.

In Fig. 48, the horizontal axis represents frequency (Hz (hertz)), and the vertical axis represents sound pressure (SPL, dB (decibel)). In Fig. 48, the solid line represents the sound output characteristics of an acoustic device according to another embodiment of the present specification in which the rear of the enclosure illustrated in Figs. 28 and 29 is configured with a non-flat structure, and the dotted line represents the sound output characteristics of an acoustic device according to an experimental example in which the rear of the enclosure illustrated in Figs. 28 and 29 is configured with a flat structure.

Referring to Figure 48, it can be seen that the solid line has improved sound pressure characteristics compared to the dotted line. For example, the solid line has improved dips and/or peaks in the sound range above approximately 400 Hz compared to the dotted line, so it can be seen that the sound pressure flatness characteristics can be improved.

Figure 49 is a drawing showing the total harmonic distortion characteristics of an acoustic device according to an embodiment and experimental example of the present specification.

In Fig. 49, the horizontal axis represents frequency (Hz (hertz)), and the vertical axis represents total harmonic distortion (THD) ratio (%). In Fig. 49, the solid line represents the total harmonic distortion characteristic of an acoustic device according to another embodiment of the present disclosure in which the rear of the enclosure illustrated in Figs. 28 and 29 is configured with a non-flat structure, and the dotted line represents the total harmonic distortion characteristic of an acoustic device according to an experimental example in which the rear of the enclosure illustrated in Figs. 28 and 29 is configured with a flat structure.

Referring to Fig. 49, it can be seen that the solid line has improved total harmonic distortion characteristics compared to the dotted line. For example, it can be seen that the dotted line has a total harmonic distortion characteristic of 16% in a frequency range of approximately 600 Hz, a total harmonic distortion characteristic of 14% in a frequency range of approximately 1.5 kHz, and a total harmonic distortion characteristic of 30% in a frequency range of approximately 2.2 kHz. Accordingly, the acoustic device according to the experimental example may have deteriorated sound pressure characteristics and sound quality due to the total harmonic distortion characteristics in the frequency ranges of approximately 600 Hz, approximately 1.5 kHz, and approximately 2.2 kHz, respectively. It can be seen that the solid line has a total harmonic distortion characteristic of 7% in a frequency range of approximately 600 Hz, 6% in a frequency range of approximately 1.5 kHz, and 3% in a frequency range of approximately 2.2 kHz. Accordingly, the acoustic device according to another embodiment of the present specification can improve sound pressure characteristics and sound quality by improving total harmonic distortion characteristics in each of the sound ranges of approximately 600 Hz, approximately 1.5 kHz, and approximately 2.2 kHz due to the non-flat structure of the rear of the enclosure.

FIG. 50A is a diagram showing the directivity characteristics at 0 degrees and 30 degrees for an acoustic device according to an embodiment of the present specification. FIG. 50B is a diagram showing the directivity characteristics at 0 degrees and 30 degrees for an acoustic device according to an experimental example. In FIGS. 50A and 50B , the dotted line represents the sound pressure characteristics by frequency when the angle between the acoustic device and the microphone is 0 degrees, and the solid line represents the sound pressure characteristics by frequency when the angle between the acoustic device and the microphone is 30 degrees. The embodiment of the present specification shows the directivity characteristics at 0 degrees and 30 degrees for sound generated by the third sound generator arranged between the loop frame and the loop interior material described with reference to FIG. 45 . The experimental example shows the directivity characteristics at 0 degrees and 30 degrees for sound generated by the coil-type speaker arranged in the loop interior material described with reference to FIG. 45 .

Referring to Fig. 50a, it can be seen that the solid line has similar sound pressure characteristics to the dotted line in the entire frequency range. Referring to Fig. 50b, it can be seen that the sound pressure of the solid line decreases in the frequency range of approximately 3 kHz or higher compared to the dotted line. Accordingly, it can be seen that the acoustic device according to the embodiment of the present specification has similar directivity characteristics at 0 degrees and 30 degrees, and it can be seen that the acoustic device according to the experimental example has lower directivity characteristics at 40 degrees compared to 0 degrees.

It can be seen that the dotted line illustrated in Fig. 50a has a relatively higher sound pressure compared to the dotted line illustrated in Fig. 50b. In addition, it can be seen that the solid line illustrated in Fig. 50a has a relatively higher sound pressure compared to the solid line illustrated in Fig. 50b. Accordingly, it can be seen that the acoustic device according to the embodiment of the present specification has higher sound pressure characteristics at 0 degrees and 30 degrees compared to the acoustic device according to the experimental example.

FIG. 51A is a diagram showing the directivity characteristics at 0 degrees and 60 degrees for an acoustic device according to an embodiment of the present specification. FIG. 51B is a diagram showing the directivity characteristics at 0 degrees and 60 degrees for an acoustic device according to an experimental example. In FIGS. 51A and 51B , the dotted line represents the frequency-dependent sound pressure characteristics when the angle between the acoustic device and the microphone is 0 degrees, and the solid line represents the frequency-dependent sound pressure characteristics when the angle between the acoustic device and the microphone is 60 degrees. The embodiment of the present specification shows the directivity characteristics at 0 degrees and 60 degrees for sound generated by the third sound generator arranged between the loop frame and the loop interior material described with reference to FIG. 45 . The experimental example shows the directivity characteristics at 0 degrees and 60 degrees for sound generated by the coil-type speaker arranged in the loop interior material described with reference to FIG. 45 .

Referring to Fig. 51a, it can be seen that the solid line has similar sound pressure characteristics to the dotted line in the entire frequency range. Referring to Fig. 51b, it can be seen that the sound pressure of the solid line is reduced in the frequency range of approximately 450 Hz or less and approximately 2 kHz or more compared to the dotted line. Accordingly, it can be seen that the acoustic device according to the embodiment of the present specification has similar directivity characteristics at 0 degrees and 60 degrees, and it can be seen that the acoustic device according to the experimental example has lower directivity characteristics at 60 degrees compared to 0 degrees.

It can be seen that the solid line illustrated in Fig. 51a has a relatively high sound pressure compared to the solid line illustrated in Fig. 51b. Accordingly, it can be seen that the acoustic device according to the embodiment of the present specification has a high sound pressure characteristic at 60 degrees compared to the acoustic device according to the experimental example.

FIG. 52a is a diagram showing the directivity characteristics at 0 degrees and 80 degrees for an acoustic device according to an embodiment of the present specification. FIG. 52b is a diagram showing the directivity characteristics at 0 degrees and 80 degrees for an acoustic device according to an experimental example. In FIGS. 52a and 52b , the dotted line represents the frequency-dependent sound pressure characteristics when the angle between the acoustic device and the microphone is 0 degrees, and the solid line represents the frequency-dependent sound pressure characteristics when the angle between the acoustic device and the microphone is 80 degrees. The embodiment of the present specification shows the directivity characteristics at 0 degrees and 80 degrees for sound generated by the third sound generator arranged between the loop frame and the loop interior material described with reference to FIG. 45 . The experimental example shows the directivity characteristics at 0 degrees and 80 degrees for sound generated by the coil-type speaker arranged in the loop interior material described with reference to FIG. 45 .

Referring to Fig. 52a, it can be seen that the solid line has a reduced sound pressure in the frequency range of approximately 200 Hz to 1 kHz and approximately 10 kHz or more compared to the dotted line. Referring to Fig. 52b, it can be seen that the solid line has a reduced sound pressure in the entire frequency range compared to the dotted line. Accordingly, it can be seen that the acoustic device according to the embodiment of the present specification has a slightly lower directivity characteristic at 80 degrees compared to 0 degrees, and it can be seen that the acoustic device according to the experimental example has a lower directivity characteristic at 80 degrees compared to 0 degrees.

It can be seen that the solid line illustrated in Fig. 52a has a relatively high sound pressure compared to the solid line illustrated in Fig. 52b. Accordingly, it can be seen that the acoustic device according to the embodiment of the present specification has a high sound pressure characteristic at 80 degrees compared to the acoustic device according to the experimental example.

As can be seen from FIGS. 50a to 52b, the acoustic device according to the embodiment of the present specification has high sound pressure characteristics and wide directivity characteristics compared to the acoustic device according to the experimental example.

Fig. 53a is a diagram showing a polar pattern for a 2 kHz sound frequency range output from an acoustic device according to an embodiment of the present disclosure. Fig. 53b is a diagram showing a polar pattern for a 2 kHz sound frequency range output from a coil-type speaker according to an experimental example. The polar patterns shown in Figs. 53a and 53b each represent sound pressure in the range of 90 degrees to -90 degrees centered on the microphone.

As can be seen from FIG. 53a, the acoustic device according to the embodiment of the present specification has a sound pressure of about 80 dB to about 84 dB in the range of 20 degrees to -20 degrees, and a sound pressure of about 82 dB to about 84 dB in the range of -20 degrees to -80 degrees and in the range of 20 degrees to 80 degrees.

As can be seen in Fig. 53b, the coil-type speaker according to the experimental example has a sound pressure of approximately 77 dB to 79 dB in the range of 20 degrees to -70 degrees, and a sound pressure of approximately 76 dB to 79 dB in the range of -70 degrees to -80 degrees and in the range of 70 degrees to 80 degrees.

Therefore, it can be seen that the acoustic device according to the embodiment of the present specification has a wide directivity angle with relatively high sound pressure compared to the coil-type speaker according to the experimental example.

Fig. 54a is a diagram showing a polar pattern for a 4 kHz frequency band output from an acoustic device according to an embodiment of the present specification. Fig. 54b is a diagram showing a polar pattern for a 4 kHz frequency band output from a coil-type speaker according to an experimental example.

As can be seen from FIG. 54a, the acoustic device according to the embodiment of the present specification can be seen to have a sound pressure of approximately 92 dB to approximately 94 dB in the range of 80 degrees to -80 degrees.

As can be seen in Fig. 54b, the coil-type speaker according to the experimental example has a sound pressure of approximately 76 dB to 80 dB in the range of 40 degrees to -40 degrees, and a sound pressure of approximately 72 dB to 76 dB in the range of -40 degrees to -80 degrees and in the range of 40 degrees to 80 degrees.

Therefore, it can be seen that the acoustic device according to the embodiment of the present specification has a wide directivity angle with relatively high sound pressure compared to the coil-type speaker according to the experimental example.

Fig. 55a is a diagram showing a polar pattern for a 6 kHz frequency band output from an acoustic device according to an embodiment of the present specification. Fig. 55b is a diagram showing a polar pattern for a 6 kHz frequency band output from a coil-type speaker according to an experimental example.

As can be seen from FIG. 55a, the acoustic device according to the embodiment of the present specification can be seen to have a sound pressure of approximately 86 dB to approximately 92 dB in the range of 80 degrees to -80 degrees.

As can be seen in Fig. 55b, the coil-type speaker according to the experimental example has a sound pressure of approximately 77 dB to 79 dB in the range of 30 degrees to -30 degrees, and a sound pressure of approximately 73 dB to 77 dB in the range of -30 degrees to -80 degrees and in the range of 30 degrees to 80 degrees.

Therefore, it can be seen that the acoustic device according to the embodiment of the present specification has a wide directivity angle with relatively high sound pressure compared to the coil-type speaker according to the experimental example.

Fig. 56a is a diagram showing a polar pattern for a sound frequency of 8 kHz output from an acoustic device according to an embodiment of the present specification. Fig. 56b is a diagram showing a polar pattern for a sound frequency of 8 kHz output from a coil-type speaker according to an experimental example.

As can be seen from FIG. 56a, the acoustic device according to the embodiment of the present specification can be seen to have a sound pressure of approximately 75 dB to approximately 80 dB in the range of 80 degrees to -80 degrees.

As can be seen in Fig. 56b, the coil-type speaker according to the experimental example has a sound pressure of approximately 75 dB to 77 dB in the range of 20 degrees to -20 degrees, and a sound pressure of approximately 71 dB to 75 dB in the range of -20 degrees to -80 degrees and in the range of 20 degrees to 80 degrees.

Therefore, it can be seen that the acoustic device according to the embodiment of the present specification has a wide directivity angle with relatively high sound pressure compared to the coil-type speaker according to the experimental example.

Fig. 57a is a diagram showing a polar pattern for a 10 kHz frequency range output from an acoustic device according to an embodiment of the present specification. Fig. 57b is a diagram showing a polar pattern for a 10 kHz frequency range output from a coil-type speaker according to an experimental example.

As can be seen from FIG. 57a, the acoustic device according to the embodiment of the present specification can be seen to have a sound pressure of approximately 87 dB to approximately 93 dB in the range of 80 degrees to -80 degrees.

As can be seen in Fig. 57b, the coil speaker according to the experimental example has a sound pressure of approximately 77 dB to 79 dB in the range of 10 degrees to -10 degrees, and a sound pressure of approximately 55 dB to 77 dB in the range of -10 degrees to -80 degrees and in the range of 10 degrees to 80 degrees.

Therefore, it can be seen that the acoustic device according to the embodiment of the present specification has a wide directivity angle with relatively high sound pressure compared to the coil-type speaker according to the experimental example.

Fig. 58a is a diagram showing a polar pattern for a 13 kHz frequency band output from an acoustic device according to an embodiment of the present specification. Fig. 58b is a diagram showing a polar pattern for a 13 kHz frequency band output from a coil-type speaker according to an experimental example.

As can be seen from FIG. 58a, the acoustic device according to the embodiment of the present specification has a sound pressure of about 87 dB to about 93 dB in the range of 70 degrees to -70 degrees, and a sound pressure of about 81 dB to 87 dB in the range of -70 degrees to -80 degrees and in the range of 70 degrees to 80 degrees.

As can be seen in Fig. 58b, the coil-type speaker according to the experimental example has a sound pressure of approximately 78 dB to 86 dB in the range of 30 degrees to -30 degrees, and a sound pressure of approximately 66 dB to 78 dB in the range of -30 degrees to -80 degrees and in the range of 30 degrees to 80 degrees.

Therefore, it can be seen that the acoustic device according to the embodiment of the present specification has a wide directivity angle with relatively high sound pressure compared to the coil-type speaker according to the experimental example.

Fig. 59a is a diagram showing a polar pattern for a 16 kHz frequency band output from an acoustic device according to an embodiment of the present specification. Fig. 59b is a diagram showing a polar pattern for a 16 kHz frequency band output from a coil-type speaker according to an experimental example.

As can be seen from FIG. 59a, the acoustic device according to the embodiment of the present specification has a sound pressure of about 80 dB to about 82 dB in the range of 40 degrees to -40 degrees, and a sound pressure of about 72 dB to 80 dB in the range of -40 degrees to -70 degrees and in the range of 40 degrees to 70 degrees.

As can be seen in Fig. 59b, the coil-type speaker according to the experimental example has a sound pressure of approximately 76 dB to 80 dB in the range of 20 degrees to -20 degrees, and a sound pressure of approximately 62 dB to 76 dB in the range of -20 degrees to -80 degrees and in the range of 20 degrees to 80 degrees.

Therefore, it can be seen that the acoustic device according to the embodiment of the present specification has a wide directivity angle with relatively high sound pressure compared to the coil-type speaker according to the experimental example.

Fig. 60a is a diagram showing a polar pattern for a 20 kHz frequency band output from an acoustic device according to an embodiment of the present specification. Fig. 60b is a diagram showing a polar pattern for a 20 kHz frequency band output from a coil-type speaker according to an experimental example.

As can be seen from FIG. 60a, the acoustic device according to the embodiment of the present specification has a sound pressure of about 78 dB to about 80 dB in the range of 30 degrees to -30 degrees, and a sound pressure of about 68 dB to 78 dB in the range of -30 degrees to -80 degrees and in the range of 30 degrees to 80 degrees.

As can be seen in FIG. 60b, the coil speaker according to the experimental example has a sound pressure of approximately 71 dB to 75 dB in the range of -30 degrees to -60 degrees and in the range of 30 degrees to 60 degrees, and a sound pressure of approximately 62 dB to 71 dB in the range of -30 degrees to 30 degrees, in the range of -60 degrees to -80 degrees, and in the range of 60 degrees to 80 degrees.

Therefore, it can be seen that the acoustic device according to the embodiment of the present specification has a wide directivity angle with relatively high sound pressure compared to the coil-type speaker according to the experimental example.

Fig. 61a is a diagram showing the directivity of a coil-type speaker according to an experimental example. Fig. 61b is a diagram showing the directivity of an acoustic device according to an embodiment of the present specification.

Referring to FIGS. 61A and 61B, the coil-type speaker (SPK) according to the experimental example and the sound device (30) according to the embodiment of the present specification may each be placed in the middle of the roof interior material (130C) to output sound into the interior space of the vehicle. A first passenger (A) may be positioned below each of the coil-type speaker (SPK) according to the experimental example and the sound device (30) according to the embodiment of the present specification, a second passenger (B) may be positioned to the left of the first passenger (A), and a third passenger (C) may be positioned to the right of the first passenger (A).

Referring to Fig. 61a, the coil-type speaker according to the experimental example can have a relatively narrow directivity angle as described with reference to Figs. 50a to 60b, so that the first passenger (A) can hear the sound output from the coil-type speaker more clearly than the second passenger (B) and the third passenger (C).

Referring to FIG. 61b, the sound device (30) according to the embodiment of the present specification can have a relatively wide directivity angle as described with reference to FIGS. 50a to 60b, so that the first passenger (A), the second passenger (B), and the third passenger (C) can all hear the sound output from the sound device (30) at an equal level.

Accordingly, the sound device (30) according to the embodiment of the present specification can output sound and/or three-dimensional sound having a wide directivity angle or provide equivalent sound to passengers of the vehicle.

An acoustic device and a transport device including the same according to one or more embodiments of the present specification may be described as follows.

An acoustic device according to one or more embodiments of the present disclosure may include an enclosure having an interior space, and an acoustic generating module within the interior space of the enclosure. A rear surface of the enclosure may include an uneven portion.

According to one or more embodiments of the present disclosure, the non-flat portion may include a curved structure, a round structure, a concave structure, or an inclined structure.

According to one or more embodiments of the present disclosure, the enclosure may include a short side and a long side. An edge portion between the short side and the uneven portion of the enclosure may be pointed.

According to one or more embodiments of the present disclosure, the rear surface of the enclosure may include a first region, a second region, and a third region between the first region and the second region. The enclosure may include a first non-flat portion in the first region and having a non-flat structure, and a second non-flat portion in the second region and having a non-flat structure.

According to one or more embodiments of the present disclosure, each of the first uneven portion and the second uneven portion may include a curved structure, a round structure, a concave structure, or an inclined structure.

According to one or more embodiments of the present disclosure, the enclosure may further include a flat portion in the third region.

According to one or more embodiments of the present disclosure, the enclosure may further include a first enclosure comprising a non-planar structure, and a second enclosure connected to the first enclosure. An acoustic generating module may be configured in an interior space between the first enclosure and the second enclosure.

According to one or more embodiments of the present disclosure, the first enclosure may include a plate and a side wall connected to an edge portion of the plate and supporting a portion of the sound generating module. The rear surface of the plate may include a non-planar structure.

According to one or more embodiments of the present disclosure, the plate may include a first region, a second region, a third region between the first region and the second region, a first non-flat portion in the first region and having a non-flat structure, and a second non-flat portion in the second region and having a non-flat structure.

According to one or more embodiments of the present disclosure, the edge portion between the side wall and the first uneven portion may be pointed. The edge portion between the side wall and the second uneven portion may be pointed.

According to one or more embodiments of the present disclosure, the thickness of the first region may decrease from the side wall to the third region. The thickness of the second region may decrease from the side wall to the third region.

According to one or more embodiments of the present disclosure, the plate may further include a flat portion in the third region.

According to one or more embodiments of the present disclosure, the sound generating module may include a vibrating member in an enclosure, and a vibrating device for vibrating the vibrating member.

According to one or more embodiments of the present disclosure, the vibration device may include one or more vibration generators.

According to one or more embodiments of the present disclosure, one or more vibration generators may include a vibrating portion comprising a piezoelectric material, a first electrode portion on a first side of the vibrating portion, and a second electrode portion on a second side of the vibrating portion that is different from the first side.

According to one or more embodiments of the present disclosure, the one or more vibration generators may further include a first cover member in the first electrode portion, and a second cover member in the second electrode portion.

According to one or more embodiments of the present disclosure, the one or more vibration generators may further include a signal supply member electrically connected to the first electrode portion and the second electrode portion. A portion of the signal supply member may be accommodated between the first cover member and the second cover member.

According to one or more embodiments of the present disclosure, the vibration device may include a first vibration device configured on a first side of the vibration member, and a second vibration device configured on a second side of the vibration member that is different from the first side.

According to one or more embodiments of the present disclosure, the vibrating member may further include at least one hole at a periphery of the vibrating device.

According to one or more embodiments of the present disclosure, the acoustic device may further include a protective member in the second vibration device.

According to one or more embodiments of the present disclosure, the protective member may be configured to contact the second vibration device and the second surface of the vibration member or may be configured to cover the second vibration device and the second surface of the vibration member.

According to one or more embodiments of the present disclosure, the vibration member may further include at least one hole located around the vibration device. The protective member may include at least one connecting hole connected to the at least one hole.

According to one or more embodiments of the present disclosure, the enclosure may include an opening connected to the interior space.

According to one or more embodiments of the present disclosure, the acoustic device may further include a connecting member connected to the rear of the enclosure and having a hole connected to the opening.

According to one or more embodiments of the present disclosure, the enclosure may further include a protrusion protruding from the enclosure so as to have a hollow hole connected to the opening.

According to one or more embodiments of the present disclosure, the acoustic device may further include a connecting member connected to the rear of the enclosure and having a hole for receiving the protrusion.

A transportation device according to one or more embodiments of the present disclosure may include an interior material exposed to an interior space, and at least one sound generating device disposed in the interior material and configured to output sound into the interior space. The at least one sound generating device may include a sound device. The sound device may include an enclosure having an interior space, and a sound generating module located in the interior space of the enclosure. The rear surface of the enclosure may include an uneven portion.

According to one or more embodiments of the present disclosure, the interior material may include one or more apertures that connect to an interior space of an enclosure in the acoustic device.

According to one or more embodiments of the present disclosure, an enclosure of an acoustic device may include an opening connected to an interior space.

According to one or more embodiments of the present disclosure, the device may further include a connecting member between the enclosure and the interior material, the connecting member having a hole connected to the opening.

According to one or more embodiments of the present disclosure, the enclosure may further include a protrusion protruding from the enclosure so as to have a hollow hole connected to the opening.

According to one or more embodiments of the present disclosure, the transport device may further include a connecting member connected to the rear of the enclosure and having a hole for receiving the protrusion.

According to one or more embodiments of the present disclosure, the transport device may further include a coupling portion configured to couple the enclosure to the interior material. The coupling portion may include a hollow portion connected to the interior space through an opening.

According to one or more embodiments of the present disclosure, the interior material may include an opening hole that is connected to the opening. The coupling member may be configured to be coupled to the enclosure through the opening hole and the opening of the interior material.

According to one or more embodiments of the present disclosure, the coupling member may further include an opening hole of the interior material, a hollow member that is received in the opening and includes a hollow portion, a hook member that is connected to a first side of the hollow member and is connected to an inner surface of the enclosure, and a latch member that is connected to a second side of the hollow member and is connected to a surface of the interior material exposed to the interior space.

According to one or more embodiments of the present disclosure, the interior material may include an opening connected to the opening. The enclosure may further include a protrusion that protrudes from the enclosure and has a hollow hole connected to the opening, and is received in the opening. The coupling member may be configured to be coupled to the enclosure through the protrusion and the opening.

According to one or more embodiments of the present specification, the coupling member may further include a hollow member that is received in the hollow hole of the protrusion through the opening hole of the interior material and includes a hollow portion, a hook member that is connected to a first side of the hollow member and is coupled to an inner surface of the enclosure in the interior space of the enclosure, and a latch member that is connected to a second side of the hollow member and is configured to be coupled to one surface of the interior material exposed to the interior space.

According to one or more embodiments of the present disclosure, the interior material may include one or more of metal, wood, rubber, plastic, carbon, glass, fiber, cloth, paper, mirror, and leather.

According to one or more embodiments of the present disclosure, the upholstery may include at least one of a dashboard, a pillar upholstery, a roof upholstery, a door upholstery, a seat upholstery, a steering wheel upholstery, a floor upholstery, a rear package upholstery, an overhead console, a rear view mirror, a glove box, a garnish member, and a sun visor. The one or more sound generating devices may vibrate at least one of the dashboard, the pillar upholstery, the roof upholstery, the door upholstery, a seat upholstery, a steering wheel upholstery, a floor upholstery, a rear package upholstery, an overhead console, a rear view mirror, a glove box, a garnish member, and a sun visor to generate sound. The sound device according to one or more embodiments of the present disclosure may be applied to or included in an sound device disposed in a device. The device according to the embodiment of the present specification may be applied to or included in a mobile device, a video phone, a smart watch, a watch phone, a wearable apparatus, a foldable apparatus, a rollable apparatus, a bendable apparatus, a flexible apparatus, a curved apparatus, a sliding apparatus, a variable apparatus, an electronic notebook, an electronic book, a portable multimedia player (PMP), a personal digital assistant (PDA), an MP3 player, a mobile medical device, a desktop PC, a laptop PC, a netbook computer, a workstation, a navigation system, a vehicle navigation system, a vehicle display device, a vehicle device, a theater device, a theater display device, a television, a wallpaper device, a signage device, a game device, a laptop, a monitor, a camera, a camcorder, and a home appliance. In addition, the acoustic device according to one or more embodiments of the present specification may be applied to or included in an organic light-emitting lighting device or an inorganic light-emitting lighting device. When the acoustic device is applied to a lighting device, the lighting device may function as both a light source and a speaker. In addition, when the acoustic device according to one or more embodiments of the present specification is applied to or included in a mobile device or the like, the acoustic device may be one or more of a speaker, a receiver, and a haptic device, but the embodiments of the present specification are not limited thereto.

The present specification described above is not limited to the aforementioned embodiments and the attached drawings, and it will be apparent to those skilled in the art to which this specification pertains that various substitutions, modifications, and changes are possible within the scope of the technical spirit of this specification. Therefore, the scope of this specification is indicated by the claims set forth below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included within the scope of this specification.

10: Vehicle 30: Sound device
130: Interior material 135: Opening hole
310: Enclosure 310o: Opening
311: First enclosure 311a: First plate
311b: Side wall 311r: First side of first enclosure
312: Second enclosure 313: Internal space
331: Vibration member 331o: Hole
320: Joint member 350, 380: Connecting member
330: Sound generating module 333, 335: Vibration device
315: Protrusion 500: Joint
501: Hollow section 503a: Chamfer section
1311a: Vibration section 1311b, 1311c: Electrode section
410: Protective member 30-1, 30-2, 30-3, 30-4: Sound generating device

Claims (38)

an enclosure having an interior space; and
Includes a sound generating module in the internal space of the above enclosure,
An acoustic device, wherein the rear of the enclosure includes an uneven portion. In the first paragraph,
An acoustic device, wherein the above uneven portion includes a curved structure, a round structure, a concave structure, or an inclined structure. In the first paragraph,
The above enclosure includes short sides and long sides,
The corner portion between the short side of the above enclosure and the above uneven portion is sharp, acoustic device. In the first paragraph,
The rear of the enclosure comprises a first region, a second region, and a third region between the first region and the second region,
The above enclosure,
a first non-flat portion in the first region and having the non-flat structure; and
An acoustic device comprising a second non-flat portion located in the second region and having the non-flat structure. In paragraph 4,
An acoustic device, wherein each of the first uneven portion and the second uneven portion includes a curved structure, a round structure, a concave structure, or an inclined structure. In paragraph 4,
An acoustic device, wherein the enclosure further comprises a flat portion in the third region. In the first paragraph,
The above enclosure,
a first enclosure comprising the above non-planar structure; and
Further comprising a second enclosure connected to the first enclosure,
An acoustic device, wherein the sound generating module is configured in the internal space between the first enclosure and the second enclosure. In paragraph 7,
The above first enclosure,
plate; and
A side wall connected to an edge portion of the above plate and supporting a portion of the above sound generating module,
An acoustic device, wherein the rear surface of the plate includes the non-flat structure. In paragraph 8,
The above plate,
Area 1;
Area 2;
A third area between the first area and the second area;
a first non-flat portion in the first region and having the non-flat structure; and
An acoustic device comprising a second non-flat portion located in the second region and having the non-flat structure. In paragraph 9,
The corner portion between the side wall and the first uneven portion is sharp,
The corner portion between the side wall and the second uneven portion is sharp, acoustic device. In paragraph 9,
The thickness of the first region decreases from the side wall to the third region,
An acoustic device wherein the thickness of the second region decreases from the side wall to the third region. In paragraph 9,
An acoustic device wherein the plate further includes a flat portion in the third region. In the first paragraph,
The above sound generating module,
a vibration member in the above enclosure; and
An acoustic device comprising a vibration device that vibrates the above-mentioned vibration member. In paragraph 13,
The vibration device comprises one or more vibration generators,
The one or more vibration generators,
A vibrating member comprising a piezoelectric material;
A first electrode part on the first surface of the above vibrating part; and
An acoustic device comprising a second electrode portion on a second surface different from the first surface of the vibrating portion. In paragraph 14,
The one or more vibration generators,
a first cover member in the first electrode portion; and
An acoustic device further comprising a second cover member in the second electrode section. In paragraph 15,
The at least one vibration generator further comprises a signal supply member electrically connected to the first electrode portion and the second electrode portion,
An acoustic device, wherein a portion of the signal supply member is accommodated between the first cover member and the second cover member. In paragraph 13,
The above vibration device,
a first vibration device configured on the first surface of the above vibration member; and
An acoustic device comprising a second vibration device configured on a second side different from the first side of the vibration member. In paragraph 17,
An acoustic device wherein the vibration member further comprises at least one hole located around the vibration device. In paragraph 17,
An acoustic device further comprising a protective member in the second vibration device. In paragraph 19,
An acoustic device wherein the protective member is configured to contact the second vibration device and the second surface of the vibration member or is configured to cover the second vibration device and the second surface of the vibration member. In paragraph 19,
The vibration member further includes at least one hole around the vibration device,
An acoustic device, wherein the protective member comprises at least one connecting hole connected to at least one hole. In any one of claims 1 to 21,
An acoustic device, wherein the enclosure includes an opening connected to the interior space. In paragraph 22,
An acoustic device further comprising a connecting member connected to the rear of the enclosure and having a hole connected to the opening. In paragraph 22,
An acoustic device, wherein the enclosure further includes a protrusion protruding from the enclosure so as to have a hollow hole connected to the opening. In paragraph 23,
An acoustic device further comprising a connecting member connected to the rear of the enclosure and having a hole for receiving the protrusion. Exposed interior materials in indoor spaces; and
At least one sound generating device disposed in the above-mentioned interior material and outputting sound into the indoor space,
A transport device, wherein at least one sound generating device comprises a sound device according to any one of claims 1 to 21. In paragraph 26,
A transport device, wherein said interior material includes one or more openings connected to said interior space of said enclosure in said acoustic device. In paragraph 26,
A transport device, wherein the enclosure of the acoustic device includes an opening connected to the internal space. In paragraph 28,
A transport device further comprising a connecting member between the enclosure and the interior material and having a hole connected to the opening. In paragraph 28,
A transport device, wherein the enclosure further includes a protrusion protruding from the enclosure so as to have a hollow hole connected to the opening. In paragraph 30,
A transport device further comprising a connecting member connected to the rear of the enclosure and having a hole for receiving the protrusion. In paragraph 28,
Further comprising a coupling member configured to couple the enclosure to the interior material,
A transport device, wherein the above-mentioned connecting portion includes a hollow portion connected to the internal space through the opening. In paragraph 32,
The above-mentioned interior material includes an opening hole connected to the above-mentioned opening,
A transport device, wherein the above-mentioned joint is configured to be coupled to the enclosure through the opening hole and the opening of the interior material. In paragraph 33,
The above joint is,
A hollow member that is accommodated in the opening hole of the above-mentioned interior material and includes the hollow portion;
a hook member connected to the first side of the hollow member and coupled to the inner surface of the enclosure; and
A transport device further comprising a latch member connected to the second side of the hollow member and coupled to one surface of the interior material exposed to the indoor space. In paragraph 32,
The above-mentioned interior material includes an opening hole connected to the above-mentioned opening,
The enclosure further includes a protrusion protruding from the enclosure so as to have a hollow hole connected to the opening, and is received in the opening hole;
A transport device, wherein the above-mentioned joint is configured to be coupled with the enclosure through the above-mentioned protrusion and the above-mentioned opening. In paragraph 35,
The above joint is,
A hollow member that is received in the hollow hole of the protrusion through the opening hole of the above-mentioned built-in material and includes the hollow portion;
a hook member connected to the first side of the hollow member and coupled to the inner surface of the enclosure in the inner space of the enclosure; and
A transport device further comprising a latch member connected to the second side of the hollow member and configured to engage with one side of the interior material exposed to the indoor space. In paragraph 26,
A transport device, wherein the interior material comprises one or more materials selected from the group consisting of metal, wood, rubber, plastic, carbon, glass, fiber, cloth, paper, mirror, and leather. In paragraph 26,
The above interior materials include at least one of a dashboard, a pillar interior material, a roof interior material, a door interior material, a seat interior material, a handle interior material, a floor interior material, a rear package interior material, an overhead console, a rear view mirror, a glove box, a garnish member, and a sun visor.
A transportation device wherein the one or more sound generating devices vibrate at least one of the dashboard, the pillar interior material, the roof interior material, the door interior material, the seat interior material, the handle interior material, the floor interior material, the rear package interior material, the overhead console, the rear view mirror, the glove box, the garnish member, and the sun visor to generate sound.