JP2008167268A - Speaker apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a speaker apparatus which can be installed even in a case where a display device is small-sized in depth. <P>SOLUTION: In a speaker apparatus 20 of the present invention, a speaker 21 includes a rectangular diaphragm, a cabinet 22 includes an opening face 24 which incorporates the speaker 21 and on which a slit-like sound radiating hole 23 is opened for radiating sound from the speaker 21, and a depth dimension of the speaker apparatus with respect to the opening face 24 of the cabinet 22 is made smaller than or equal with a depth dimension L1 of a thin television 1 to be mounted therein, or a lateral width dimension L4 of the opening face 24 of the cabinet 22 is made smaller than or equal with a dimension resulting from subtracting a depth dimension L2 of a display 10 constituting the thin television 1 from the depth dimension L1 of the thin television 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a speaker device that is attached to a display device and reproduces an audio signal.

In recent years, televisions equipped with a liquid crystal display or a plasma display panel (PDP) have started to spread in place of televisions (display devices) equipped with a deep CRT display. These displays can be made thin with a small depth compared to the size of the screen.
Such TV sound is reproduced by a built-in speaker or an external speaker. In the case of a built-in speaker, the built-in location is determined by the mutual positional relationship with the display. A thin display makes the TV main body thinner, so the restrictions on the speaker's built-in location are large, the depth is naturally small, and the vertical and horizontal dimensions cannot be determined with room due to space restrictions. In addition, at present, it is required to make the exterior dimensions (dimensions as viewed from the front) in which the display is accommodated as small as possible.
Some conventional televisions having a built-in CRT display have speaker devices arranged in the depth direction. For example, there are those shown in Patent Document 1 and Patent Document 2. The speaker device of Patent Document 1 has two built-in speakers, and one speaker is provided with a cone-shaped speaker as a front speaker, and the sound emitted therefrom is guided through a horn-shaped sound path that opens forward. The other speaker was an omnidirectional cone type speaker that opened upward as an upper speaker. Moreover, the speaker apparatus of patent document 2 was comprised by the cone-shaped speaker and the flat horn-shaped sound path on both sides of the television.

JP-A-6-284488 (paragraphs 0020 to 0025) JP-A-6-326948 (paragraphs 0010 to 0016)

  The conventional speaker device is configured as described above and has a structure in which sound is emitted from a narrow part on the front surface of the display. In order to emit sound from a narrow part, the depth direction (or vertical direction) is used. In addition, the speaker unit itself employs a cone-shaped speaker having a depth. Therefore, it is difficult to mount the conventional speaker device on a thin television display, or there is a problem that the speaker device cannot be installed when the depth of the display device is small.

  The present invention has been made to solve the above-described problems, and an object thereof is to obtain a speaker device that can be installed even when the depth of a display device is small.

  A speaker device according to the present invention includes a speaker having a rectangular diaphragm, and a cabinet having a built-in speaker and having an opening surface that opens a slit-like sound emission hole that radiates sound from the speaker. The dimension of the depth of the display is less than the dimension of the depth of the display device to be mounted, or the width of the opening of the cabinet is determined from the dimension of the depth of the display device to the depth of the display constituting the display device. It is the one below the excluded dimension.

  According to the present invention, it is possible to obtain a speaker device that can be installed even when the depth of the display device is small.

An embodiment of the present invention will be described below.
Embodiment 1 FIG.
FIG. 1 is a perspective view of a flat-screen television according to Embodiment 1 of the present invention. The flat-screen television 1 includes a display 10 and a speaker device 20. The speaker device 20 includes a speaker 21, a cabinet 22 that houses the speaker 21, and a sound emission hole 23 that is perforated in the cabinet 22, and the surface of the cabinet 22 where the sound emission hole 23 opens is referred to as an opening surface 24. . FIG. 2 is a horizontal sectional view of the flat-screen television according to Embodiment 1 of the present invention, showing a state in which an amplifier 30 necessary for driving the speaker device 20 is connected. The depth dimension of the flat-screen television 1 is L1. And the depth dimension of the display 10 is L2. FIG. 3 is a perspective view of the speaker device according to Embodiment 1 of the present invention. The depth dimension of the cabinet 22 with respect to the opening surface 24 is L3, and the lateral width dimension of the opening surface 24 is L4.

  Here, the speaker 21 has a rectangular diaphragm and is a flat speaker with a small depth such as a full drive speaker, an electrostatic speaker, a piezoelectric speaker, etc., and the thickness of the speaker 21 is about 10 mm. It is thinner than the cone type speaker used, and the volume of the entire speaker can be reduced.

  The cabinet 22 incorporates a speaker 21, has an opening surface 24 that opens a slit-like sound emitting hole 23 that radiates sound of the speaker 21, and is attached to both sides of the display 10. For example, as shown in FIG. 1, it can be attached to both sides of the center, and can also be attached to both the upper side and the lower side. The cabinet 22 has a depth dimension L3 with respect to the opening surface 24 of the cabinet 22 equal to or smaller than the depth dimension L1 of the thin television 1 to which the cabinet 22 is attached, or the depth of the flat television 1 to which the lateral dimension L4 of the opening surface 24 is attached. Is less than the dimension obtained by subtracting the depth dimension L2 of the display 10 from the dimension L1. The cross-sectional shape of the cabinet 22 parallel to the opening surface 24 can be any structure such as a rectangular parallelepiped, a circle, an ellipse, or a polygon. The opening surface 24 of the cabinet 22 can be attached so as to face at least one of the front surface, the side surface, and the back surface of the thin television 1. The sound emitting hole 23 is an elongated slit-like hole in the cabinet 22, and the sound from the speaker 21 is radiated.

  As shown in FIG. 2, if the speaker 21 is brought into close contact with the side surface 25 or the side surface 26 in the cabinet 22, the lateral dimension L4 of the opening surface 24 of the cabinet 22 itself can be reduced. It is possible to prevent the width of the flat-screen television 1 from being increased even if it is mounted on the TV. Further, by freely setting the aspect ratio of the speaker 21, the speaker 21 can be structured in accordance with the depth dimension L <b> 1 of the thin television 1 and the depth dimension L <b> 3 with respect to the opening surface of the cabinet.

  In addition, since the cone-shaped speaker used in the past uses a horn-shaped sound path structure to radiate the sound emitted from the speaker, the sound pressure characteristics fluctuate due to acoustic resonance in the horn. However, since the speaker device 20 of Embodiment 1 uses a flat speaker and does not use a horn-like sound path structure, there is no deterioration in sound quality.

  As described above, according to the first embodiment, the speaker device 20 includes the speaker 21 having a rectangular diaphragm and the slit-like sound emission hole 23 that incorporates the speaker 21 and radiates sound from the speaker 21. A cabinet 22 having an opening surface 24 that is open, and a depth dimension L3 with respect to the opening surface 24 of the cabinet 22 is equal to or less than a depth dimension L1 of the thin television 1 to which the cabinet 22 is mounted, or the width of the opening surface 24 of the cabinet 22 Can be installed even when the depth dimension L1 of the flat-screen TV 1 is small, because the dimension L4 is less than the depth dimension L1 of the flat-screen TV 1 minus the depth dimension L2 of the display 10 constituting the flat-screen TV 1. The effect that the speaker device 20 can be obtained is produced.

Embodiment 2. FIG.
FIG. 4 is a horizontal sectional view of a flat-screen television according to Embodiment 2 of the present invention.
As shown in FIG. 4, in the second embodiment, the speaker device 20 is the same as that in the first embodiment. However, the first embodiment is different from the first embodiment in that the opening surface 24 is on the front surface of the thin television 1. 2, the opening surface 24 is on the side surface of the flat-screen television 1. The opening surface 24 of the second embodiment is a side surface of the thin television 1, but since the sound emitting hole 23 is elongated in a slit shape, the rectangular opening has a wide directivity in the slit width direction with a small size, A sufficient volume can be obtained even in front of the flat-screen TV 1. Since the short side of the opening surface 24 of the cabinet 22 is in the same direction as the depth of the flat-screen TV 1, the cabinet 22 can be attached while being shifted inward from the side end surface of the flat-screen TV 1 and further close to the back surface of the display 10. Since it can arrange | position or closely_contact | adhere, the freedom degree of attachment of the cabinet 22 increases.

  In the first embodiment, the sound emitting hole 23 is opened on the front surface of the thin television 1, and in the second embodiment, the sound emitting hole 23 is opened on the side surface of the thin television 1, but for example, the speaker device 20 of the first embodiment The sound emitting hole 23 of the speaker device 20 can be opened on the back surface of the thin television 1 by directing the opening surface 24 toward the back surface side of the thin television 1.

  The speaker device 20 according to the first and second embodiments uses sound radiated from the front surface of the speaker 21 housed in the cabinet 22, but for the sound radiated from the back surface of the speaker 21, the back surface of the speaker 21. A small volume sealed vacant space is constructed so that it does not radiate from the back surface, or a cabinet structure that does not affect the sound that exits the sound emitting hole 23 even if radiated is used. What is necessary is just to make the sound which reaches the sound hole 23 small.

  As described above, according to the second embodiment, the speaker device 20 is attached so that the opening surface 24 of the cabinet 22 faces at least one of the front surface, the side surface, and the rear surface of the thin television 1. There is an effect that the speaker device 20 that can be installed can be obtained even when the depth L1 of the flat-screen television 1 is small.

1 is a perspective view of a thin television according to Embodiment 1 of the present invention. 1 is a horizontal sectional view of a flat-screen television according to Embodiment 1 of the present invention. 1 is a perspective view of a speaker device according to Embodiment 1 of the present invention. It is a horizontal sectional view of the flat-screen television by Embodiment 2 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Flat-screen television, 10 Display, 20 Speaker apparatus, 21 Speaker, 22 Cabinet, 23 Sound emission hole, 24 Opening surface, 25, 26 Side, 30 Amplifier, L1 Depth dimension of thin television, L2 Depth dimension of display, L3 Depth dimension with respect to the opening surface of the cabinet, L4 Width dimension of the opening surface.

Claims (3)

A speaker having a rectangular diaphragm;
A cabinet having a built-in speaker and having an opening surface that opens a slit-like sound emitting hole that radiates sound from the speaker;
A display in which the depth dimension with respect to the opening surface of the cabinet is equal to or less than the depth dimension of the display device to be mounted, or the horizontal width dimension of the opening surface of the cabinet is configured from the depth dimension of the display device. The speaker device is characterized by having a dimension equal to or less than the dimension excluding the dimension of the depth.   The speaker device according to claim 1, wherein the opening surface of the cabinet is attached so as to face at least one of a front surface, a side surface, and a back surface of the display device.   2. The speaker device according to claim 1, wherein at least one of a full-drive speaker, an electrostatic speaker, and a piezoelectric speaker is used as the speaker.

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