JP2005027019A - Seat with speaker - Google Patents

Abstract

A seat with a speaker that can naturally and clearly hear sound from an electroacoustic device, and that can create a sound field that can be clearly heard together with environmental noise around the ear of a person sitting on the seat. To provide.
Speaker holding members 18 are attached to the left and right sides of a headrest 16 of the seat, and speaker units 20C, M, and S that radiate a plane wave are embedded inside the inner surface. The occupant 22 seated on the seat cushion 12 can hear the sound of a plane wave that goes straight from the speaker units 20C, M, S arranged right next to both ears 24 toward the ears 24 with both ears. In addition, environmental sounds propagating from the surroundings can be simultaneously heard by both ears 24.
[Selection] Figure 2

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seat with a speaker that creates a sound field in which a person sitting on a seat can naturally hear sound from an audio device or the like and environmental noise (ambient noise).
[0002]
[Prior art]
For example, in an aircraft, an occupant seated on a seat generally listens to music or the like provided in the cabin with headphones (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 08-102741
[Problems to be solved by the invention]
However, when listening to music or the like with headphones, there is a problem that is difficult to notice when someone speaks.
[0005]
In addition, the headphones have a feeling of pressure and may disturb the hair style.
[0006]
In recent years, speaker systems capable of obtaining a 5.1 channel surround sound field have been put on the market, but those that can only be heard by a person sitting on a seat have not been developed.
[0007]
In consideration of the above facts, the present invention provides a sound field in which sound from an electroacoustic device can be heard naturally (that is, without using headphones or earphones) and can be heard clearly together with environmental noise. An object of the present invention is to provide a speaker-equipped seat that can be created around the ear of a person seated on the seat.
[0008]
[Means for Solving the Problems]
The seat with a speaker according to claim 1 is a seat with a speaker that includes a seat body provided with a seat cushion and a seat back, and a plurality of speakers, and is capable of reproducing a multi-channel surround sound. A pair of left and right main channel speakers that reproduce the sound of the left and right main channels, a pair of left and right center channel speakers that reproduce the sound of the center channel, and a pair of left and right surround speakers that reproduce the sound of the left and right surround channels A low-frequency speaker that reproduces the sound or vibration of the low-frequency channel, and at least the main channel speaker, the center channel speaker, and the surround speaker are those of a human seated on the seat cushion. Placed on the side of the head, front It is characterized by emitting a plane wave toward the human ear.
[0009]
Next, the operation of the speaker-equipped sheet according to claim 1 will be described.
[0010]
In the seat with a speaker according to claim 1, when each speaker is connected to an acoustic signal generator such as a 5.1 channel surround amplifier, and an acoustic signal output from the acoustic signal generator is input to each speaker. The sound from the main channel speaker, the sound from the center channel speaker, and the sound from the surround speaker arranged on the side of the human head reach the human ear.
[0011]
The characteristics of a plane wave (the wave front where the sound wave travels in parallel) include sound pressure maintenance, distant transmission, straight travel, and high directivity (for example, a normal diaphragm has a conical recess shape). Contrast with cone speaker).
[0012]
For this reason, even if the volume of the sound output from the main channel speaker, the center channel speaker, and the surround speaker is relatively small, a sufficient volume can be obtained at a remote location.
[0013]
Further, unlike headphones, a space can be provided between the ear and each speaker (main channel speaker, center channel speaker, surround speaker), so that ambient environmental sounds can be heard simultaneously.
[0014]
In addition, in main channel speakers, center channel speakers, and surround speakers that radiate plane waves, the volume in directions other than the ears of the person sitting on the seat cushion is extremely reduced (the high directivity of plane waves). Therefore, the sound from these speakers is hardly audible to surrounding people.
[0015]
The invention according to claim 2 is a seat with a speaker that includes a seat body including a seat cushion and a seat back, and a plurality of speakers, and is capable of reproducing multi-channel sound, and includes two main left and right channels. A pair of left and right main channel speakers for reproducing the sound and a pair of left and right surround speakers for reproducing the sound of the left and right surround channels. The main channel speaker and the surround speaker are provided on the seat cushion. It is arranged on the side of the head of a human being seated and emits a plane wave toward the human ear.
[0016]
Next, an operation of the speaker-equipped sheet according to claim 2 will be described.
[0017]
In the seat with a speaker according to claim 2, when each speaker is connected to an acoustic signal generator such as a four-channel amplifier, and an acoustic signal output from the acoustic signal generator is input to each speaker, The sound from the main channel speaker arranged on the side of the head and the sound from the surround speaker reach the human ear.
[0018]
The characteristics of a plane wave (the wave front where the sound wave travels in parallel) include sound pressure maintenance, distant transmission, straight travel, and high directivity (for example, a normal diaphragm has a conical recess shape). Contrast with cone speaker).
[0019]
For this reason, even if the volume of the sound output from the main channel speaker and the surround speaker is relatively small, a sufficient volume can be obtained at a remote location.
[0020]
Further, unlike headphones, a space can be provided between the ear and each speaker (main channel speaker, surround speaker), so that ambient environmental sounds can be heard simultaneously.
[0021]
In addition, in main channel speakers and surround speakers that radiate plane waves, the sound volume in directions other than the ears of the person sitting on the seat cushion is extremely reduced (because of the high directivity of plane waves). Sound from each speaker is hardly audible to surrounding people.
[0022]
According to a third aspect of the present invention, there is provided a seat with a speaker, comprising a seat body having a seat cushion and a seat back, and a plurality of speakers, and capable of reproducing multi-channel sound, wherein the sound has two left and right channels. And a pair of left and right speakers, which are arranged on the side of a human head seated on the seat cushion, and radiate a plane wave toward the human ear.
[0023]
Next, an operation of the speaker-equipped sheet according to claim 3 will be described.
[0024]
In the seat with a speaker according to claim 3, when each speaker is connected to an acoustic signal generator such as a two-channel amplifier, and an acoustic signal output from the acoustic signal generator is input to each speaker, Sound from a speaker arranged on the side of the head reaches the human ear.
[0025]
The characteristics of a plane wave (the wave front where the sound wave travels in parallel) include sound pressure maintenance, distant transmission, straight travel, and high directivity (for example, a normal diaphragm has a conical recess shape). Contrast with cone speaker).
[0026]
For this reason, even if the volume of the sound output from the speaker is relatively low, a sufficient volume can be obtained at a remote location.
[0027]
Further, unlike headphones, a space can be provided between the ear and each speaker, so that ambient environmental sounds can be heard simultaneously.
[0028]
Moreover, in speakers emitting plane waves, the sound volume in directions other than the ears of the person sitting on the seat cushion is extremely reduced (because of the high directivity of plane waves), so the sound from each of these speakers It can hardly be heard by people.
[0029]
According to a fourth aspect of the present invention, in the seat with a speaker according to any one of the first to third aspects, a headrest is provided on the seat back, and the speakers are respectively attached to the left and right sides of the headrest. It is characterized by that.
[0030]
Next, an operation of the speaker-equipped sheet according to claim 4 will be described.
[0031]
In the seat with a speaker according to the fourth aspect, since each speaker is attached to the headrest, these speakers can be easily arranged near the ear.
[0032]
According to a fifth aspect of the present invention, in the seat with a speaker according to any one of the first to fourth aspects, each speaker is a flat speaker having a flat diaphragm. .
[0033]
Next, operation of the speaker-attached sheet according to claim 5 will be described.
[0034]
In the seat with a speaker according to the fifth aspect, since the speaker is a flat speaker having a flat diaphragm, a plane wave is radiated when the diaphragm vibrates.
[0035]
According to a sixth aspect of the present invention, in the seat with a speaker according to any one of the first to fifth aspects, a transducer that generates at least one of a low-frequency sound and vibration is used as the seat back, and It is provided in at least one of the seat cushions.
[0036]
Next, operation of the speaker-attached sheet according to claim 6 will be described.
[0037]
In the seat with a speaker according to claim 6, when an electrical signal having a low frequency is input to the transducer, at least one of a low frequency sound and vibration is generated from the transducer, and a listener sitting on the seat makes a low frequency sound. And at least one of vibrations can be experienced.
[0038]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a speaker-equipped sheet 10 according to the present invention will be described with reference to FIGS.
[0039]
As shown in FIG. 1, the speaker-equipped seat 10 includes a seat cushion 12 and a seat back 14, and the seat back 14 is provided with a headrest 16 that can move up and down.
[0040]
The seat 10 with a speaker shown in FIG. 1 is a seat used for, for example, an aircraft or an automobile, but may be an office chair, a sofa for home use, a seat chair, etc. Not limited to this.
[0041]
Speaker holding members 18 are attached to the left and right sides of the headrest 16, respectively.
[0042]
The surface of the speaker holding member 18 is covered with substantially the same fabric as the seat back 14.
[0043]
One speaker unit 20C, 20M, and 20S that emits a plane wave is embedded in the inside of the speaker holding member 18 one by one.
[0044]
The speaker unit 20M is for reproduction of the main channel among the 5.1 channels.
[0045]
The speaker unit 20C is disposed on the front side of the seat of the speaker unit 20M and is used for reproduction of the center channel out of 5.1 channels.
[0046]
The speaker unit 20S is disposed on the rear side of the seat of the speaker unit 20M, and is used for reproducing a surround channel out of 5.1 channels.
[0047]
The speaker holding member 18 may be attached to the headrest 16 via a universal joint or the like. Thereby, the direction of the speaker holding member 18 can be changed.
(Speaker structure)
Next, the speaker unit 20 </ b> C of the present embodiment will be described based on FIGS. 3 and 4. The speaker unit 20S and the speaker unit 20M are only larger in size than the speaker unit 20C, and the basic structure described below is the same.
[0048]
3 is an exploded perspective view of the speaker unit 20C, and FIG. 4 is a cross-sectional view of the speaker unit 20C.
[0049]
As the speaker unit 20C, for example, a so-called multi-cell flat speaker described in PCT / JP00 / 03755 or the like can be used. Although there are various sizes, all of them are objects of use.
[0050]
As shown in FIGS. 3 and 4, the speaker unit 20 </ b> C used in this embodiment includes a yoke 50 made of a plate-like member formed of a magnetic material.
[0051]
Four permanent magnets 52 that are flat and formed in a quadrangular shape are alternately positioned on the magnet fixing portion 50A of the yoke 50, and the magnetic pole faces are directed upward in the figure by bonding. It is fixedly arranged with a predetermined gap.
[0052]
On the upper surface side of the yoke 50, a diaphragm 54 is disposed close to the magnetic pole surface so as to be parallel to the magnetic pole surface of the permanent magnet 52, and thus the upper surface of the yoke 50.
[0053]
The outer peripheral edge of the rectangular frame 58 is fixed to the diaphragm mounting portion 50B of the yoke 50 with a spacer 56 made of paper or the like interposed therebetween.
[0054]
An edge 60 that is an elastic part having a semicircular cross section is formed continuously on the frame body 58 along the outer peripheral edge.
[0055]
The outer peripheral edge of the diaphragm 54 is bonded to the inner peripheral edge side of the frame body 58.
[0056]
In the diaphragm 54, four coils 62 formed in a spiral shape corresponding to each of the permanent magnets 52 are arranged.
[0057]
Each coil 62 is formed so as to be spirally wound so as to be substantially similar to the outer edge of the permanent magnet 52.
[0058]
Each coil 62 is linked with a magnetic flux directed in a direction substantially parallel to the film surface of the diaphragm 54.
[0059]
When a current is passed through the coil 62, a force in a direction perpendicular to the membrane surface of the diaphragm 54 is received, and the diaphragm 54 is displaced in a direction perpendicular to the membrane surface.
[0060]
Accordingly, when the coil 62 is energized with an electric signal representing the sound to be generated, the diaphragm 54 vibrates according to the electric signal.
[0061]
In the speaker unit 20C, plane waves are radiated in the same phase from the respective coil 62 portions of the diaphragm 54, and a synthesized plane wave obtained by synthesizing the plane waves is radiated from the entire diaphragm 54.
[0062]
In the present embodiment, the occupant 22 sitting on the seat cushion 12 can adjust the height of the headrest 16 so that the speaker units 20 </ b> C, 20 </ b> M, and 20 </ b> S are opposed to the ears 24 of the occupant 22.
[0063]
As a result, the occupant 22 is able to listen to the plane waves that are radiated from approximately the side and reach or pass through both ears or near both ears.
[0064]
Further, in the seat with speaker 10 of the present embodiment, the transducer 20B is embedded in the seat back.
[0065]
For example, the transducer 20B can emit sound (or vibration) having a frequency of 50 Hz or less.
[0066]
In the present embodiment, the transducer 20 </ b> B is provided on the skin side of the seat back 14 (the portion where the back of the occupant 22 contacts) and emits sound toward the back of the occupant 22.
[0067]
The transducer 20B may be embedded in the seat cushion 12.
[0068]
The speaker units 20C, 20M, and 20S and the transducer 20B are connected to, for example, a 5.1 channel surround amplifier (not shown) via a wiring (not shown).
[0069]
The speaker unit 20C is a speaker output terminal for the center channel of the amplifier, the speaker unit 20M is a speaker output terminal for the main channel of the amplifier, the speaker unit 20S is a speaker output terminal for the Sarand channel of the amplifier, and the transducer 20B is the amplifier output of the amplifier. Connected to each subwoofer output terminal.
[0070]
The right right channel signal is supplied to the right speaker unit 20M, the right surround signal is supplied to the right speaker unit 20S, and the main left channel signal is supplied to the left left speaker unit 20M. The left left speaker unit 20S receives a surround left channel signal, the left and right speaker units 20C receive a center channel signal (monaural signal), and the transducer 20B receives a low frequency signal (monaural signal). .
[0071]
An acoustic signal generator is connected to the 5.1 channel surround amplifier.
[0072]
As an apparatus for generating an acoustic signal, a DVD player (recorder) or the like can be raised. In addition, an audio signal is output from a TV tuner, a video tape recorder, a CD player, an MD player, a tape recorder, an MP3 player, a computer, or the like. Anything can be used.
(Function)
The occupant 22 seated on the seat cushion 12 listens with both ears the sound of a plane wave (see the arrow in FIG. 2) that goes straight from the speaker units 20C, 20M, 20S arranged right next to both ears toward the ear 24. The low sound emitted from the transducer 20B can be sensed by the body, and the environmental sound that simultaneously propagates from the surroundings can be simultaneously heard by both ears.
[0073]
Therefore, the occupant 22 can simultaneously listen to environmental sounds (calls from other people, etc.) while listening to desired music.
[0074]
In particular, the speaker units 20C, 20M, and 20S are arranged near the ears 24 of the occupant 22 and output a plane wave that is excellent in straightness toward the ears 24 (see arrows in FIG. 2). The sound from the speaker units 20C, 20M, and 20S can be heard clearly without increasing the volume.
[0075]
Furthermore, since the volume of the occupant 22 in the direction other than the ear 24 is extremely reduced (because of the high directivity of the plane wave), there is no inconvenience to the neighbor.
[0076]
Further, a low frequency sound is emitted from the transducer 20B, but when the back of the occupant 22 is in close contact with the seat back 16, there is little sound leaking to the outside, and the sound frequency is low. It is hard to hear compared to the mid-high sound at a place away from the seat.
[0077]
When the back of the occupant 22 is attached to the headrest 16, the position of the speaker unit 20M is preferably located laterally or slightly forward of the ear outer ear.
[0078]
Since the speaker units 20C, 20M, and 20S of the present embodiment include the planar diaphragm 54, the speaker holding member 18 can be formed thinner than a speaker unit having another structure such as a cone speaker unit, and is relatively thin. It can be embedded easily.
[0079]
The speaker units 20C, 20M, and 20S may be disposed near the upper end of the seat back 14, or an arm or the like may be attached to the seat back 14, and the speaker units 20C, 20M, and 20S may be attached to the arm.
[0080]
It should be noted that in the present invention, the purpose of the present invention is met, and modifications or partial changes and additions of the present invention are optional as long as the effects of the present invention are not particularly impaired. It is a range.
[0081]
The speaker units 20C, 20M, and 20S utilize the characteristics of a plane wave (a wavefront in which a sound wave travels is a parallel plane), such as sound pressure maintenance, distant transmission, straightness, and high directivity. It is also possible to enjoy the effects of the present invention by disposing it at a place other than that shown in FIG.
[0082]
The 5.1-channel surround amplifier includes an acoustic signal delay circuit, an equalizer circuit, etc. for each channel, and processes the acoustic signal according to the characteristics of the flat speaker (delay time, frequency characteristics, etc.). You can also do it.
[0083]
In the present embodiment, the speaker units 20C, 20M, and 20S and the transducer 20B are connected to the 5.1 channel surround amplifier. However, the type of amplifier to be connected is not limited to the 5.1 channel surround amplifier. .
[0084]
In the above embodiment, the speaker units 20C, 20M, and 20S and the transducer 20B are provided in order to reproduce 5.1 channel surround sound. May be only the speaker units 20M and 20S (a transducer 20B may be added if necessary), and if only two-channel reproduction is required, only the speaker unit 20M may be used (the transducer 20B if necessary). May be added).
[0085]
When only the speaker unit 20M is used, the speaker unit 20M is an amplifier corresponding to a pseudo 5.1 channel surround system (sometimes referred to as a virtual surround system). It may be connected to an amplifier with a built-in surround processor that allows you to experience surround sound in a 3D sound field.
[0086]
【The invention's effect】
As described above, according to the seat with a speaker of the present invention, it is possible to obtain a sound field in which sound from an electroacoustic device can be heard naturally and clearly, and environmental noise can be heard clearly. It has an excellent effect of being able to.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a seat with a speaker.
FIG. 2 is a top view showing the vicinity of a headrest of a seat with a speaker.
FIG. 3 is an exploded perspective view of the speaker unit.
FIG. 4 is a cross-sectional view of the speaker unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Seat with speaker 12 Seat cushion 14 Seat back 16 Headrest 20C Speaker unit 20M Speaker unit 20S Speaker unit 20B Transducer 22 Crew 24 Ear

Claims (6)

A seat body including a seat cushion and a seat back;
A seat with speakers capable of reproducing multi-channel surround sound, comprising a plurality of speakers;
At least a pair of left and right main channel speakers for reproducing main left and right channel sounds, a pair of left and right center channel speakers for reproducing center channel sounds, and a pair of left and right surround channels for reproducing sound of left and right surround channels A speaker for
The main channel speaker, the center channel speaker, and the surround speaker are disposed on a side of a human head seated on the seat cushion, and emit a plane wave toward the human ear. Characteristic seat with speaker. A seat body including a seat cushion and a seat back;
A seat with speakers capable of reproducing multi-channel sound, comprising a plurality of speakers;
A pair of left and right main channel speakers that reproduces the sound of the left and right main channels, and a pair of left and right surround speakers that reproduce the sounds of the left and right surround channels;
The main channel speaker and the surround speaker are arranged on a side of a human head seated on the seat cushion, and emit a plane wave toward the human ear. . A seat body including a seat cushion and a seat back;
A seat with speakers capable of reproducing multi-channel sound, comprising a plurality of speakers;
It has a pair of left and right speakers that play back left and right channel sound,
The speaker-attached seat, wherein the speaker is disposed on a side of a human head seated on the seat cushion and emits a plane wave toward the human ear. A headrest is provided on the seat back,
The said speaker is attached to the right and left of the said headrest, respectively, The sheet | seat with a speaker of any one of Claim 1 thru | or 3 characterized by the above-mentioned. The said speaker is a planar speaker which has a planar diaphragm, The sheet | seat with a speaker of any one of Claim 1 thru | or 4 characterized by the above-mentioned. 6. The transducer according to claim 1, wherein a transducer that generates at least one of low frequency sound and vibration is provided in at least one of the seat back and the seat cushion. 6. Seat with speaker.

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