JP2009177622A - Speaker device and display device with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speaker device and a display device capable of making the front design of a cabinet look slim by suppressing an effect that the reflected light of the light made incident on a small hole of a decorative plate from outside is emitted linearly in the small hole and decreasing the presence of a speaker device. <P>SOLUTION: The speaker device is provided with a sound emission plate 1 having a plurality of large holes 11 emitting sounds to the outside, and a decorative plate having a plurality of small holes 31 smaller than the large holes 11 and decorating one surface of the sound emission plate 1. The axial cross-sectional shape of the large hole 11 is formed in a trapezoidal shape by widening the side facing the decorative plate in a direction inclined to a central axis of the large hole 11. Consequently, the light made incident on the small hole 31 from the outside abuts on the inclined surface of the large holes 11 not to make the reflected light emitted linearly in the small hole 31. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a speaker device that outputs sound to the outside and a display device such as a television equipped with the speaker device.

A display device such as a liquid crystal television includes a display unit having a display surface on the front side, a speaker that is attached to the lower side of the display unit and outputs sound forward, a frame unit that covers a peripheral part of the display unit, and A cabinet in which a sound emitting plate portion having a plurality of large holes for covering the front side of the speaker and emitting sound to the outside is integrally formed, and a plurality of small holes smaller than the large holes, and the sound A punching sheet adhered to the outer surface of the discharge plate part and a net attached to the punching sheet are provided, and the net decorates the sound release plate part (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 7-33090

  However, in a display device in which a net is attached to a punching sheet as in Patent Document 1, it can be visually recognized that a speaker is present on the back side of the net, and thus the design on the front side of the display device is slim. If the cabinet is painted in a light color tone, the paint color of the sound emission plate will be seen through the net, causing a sense of incongruity and deteriorating the appearance. This is not preferable.

  FIG. 8 is an enlarged front view of a state in which the decorative plate of the display device previously developed by the applicant of the present invention is removed, and FIG. 9 is a part of the decorative plate having a double-sided tape attached to the back surface. FIG. 10 shows a state in which a decorative plate of the display device is attached, (a) is a partially enlarged front view, and (b) is a cross-sectional view.

  The applicant of the present invention has developed a display device as shown in FIGS. 8 to 10 so as to eliminate the presence of the speaker and make the front design of the cabinet look slim. This display device covers a speaker mounted on the lower side of the display unit 100 having a display surface on the front side, a frame unit 101 that covers the periphery of the display unit 100, and the front side of the speaker, and emits sound to the outside. And a plurality of small holes 105 smaller than the large hole 102 are formed over the entire surface, and the sound emitting plate portion is formed. And a decorative plate 107 which is attached to the outer surface of 103 by a double-sided tape 106.

  The cabinet 104 has a bright color tone by applying a silver paint on a black fabric. Further, the double-sided tape 106 is black, and a through hole 108 larger than the large hole 102 is opened at a position corresponding to the large hole 102 of the sound emitting plate portion 103, and the sound output amount in the large hole 102 is secured. I can do it.

  In the display device configured as described above, the black double-sided tape 106 is interposed between the sound emitting plate portion 103 and the decorative plate 107, and the sound emitting plate portion 103 having a bright color tone surrounds the large hole 102. Except for the fact that it is blackened by the double-sided tape 106, it is possible to eliminate the reflection of the light incident on the small hole 105 of the decorative plate 107. However, since the through-hole 108 of the double-sided tape 106 is formed larger than the large hole 102 of the sound emitting plate portion 103 so as to ensure the amount of sound output from the large hole 102, the small hole of the decorative plate 107 from the front side. The light that has entered 105 is reflected forward around the large hole 102 of the sound emitting plate portion 103, the reflected light is emitted linearly through the small hole 105, and the paint color around the large hole 102 is small. It would look like a frame through the hole 105, causing a sense of incongruity, and an improvement measure was desired.

  FIG. 11 is a cross-sectional view showing a measure for improving the display device shown in FIG. In order to prevent the silver paint color around the large hole 102 from being seen through the small hole 105, the sound emitting plate portion 103 is coated in a light color by masking around the large hole 102, and the masking is removed after painting. Can be considered. However, in this case, the number of masking steps and the step of removing masking increase, and further improvement measures have been desired.

  The present invention has been made in view of such circumstances, and its main purpose is to widen the side facing the decorative plate of the large hole provided in the sound emitting plate part in a direction inclined with respect to the central axis of the large hole. By doing so, the reflected light of the light incident on the small hole of the decorative plate from the outside does not emit light linearly in the small hole, thereby masking the sound emitting plate part around the large hole from the small hole. An object of the present invention is to provide a speaker device and a display device that can be made difficult to see.

  The speaker device according to the present invention includes a sound emitting plate portion having a large hole and a decorative plate having a plurality of small holes and decorating one surface of the sound emitting plate portion. The side facing the decorative plate is widened in a direction inclined with respect to the central axis of the large hole.

  In this invention, when light incident on the small hole of the decorative plate from the outside hits around the large hole of the sound emitting plate part, the surface of the large hole is inclined with respect to the central axis of the large hole. The reflected light is reflected in an inclined direction, and the reflected light reflected around the large hole can be prevented from being emitted linearly within the small hole, so that the large hole is not masked around the large hole. The surrounding sound emitting plate portion can be made difficult to see through the small hole.

In the speaker device according to the present invention, the large hole preferably has a trapezoidal cross-sectional shape.
In this invention, the angle inclined with respect to the central axis of the large hole can be set to an angle at which it is difficult for the reflected light to be emitted linearly within the small hole. Thus, it is possible to better prevent the reflected light reflected in this way from being emitted linearly in the small hole.

Further, in the speaker device according to the present invention, one surface of the sound emitting plate portion and the inside of the large hole are coated, and the decorative plate has a through hole larger than the large hole at a position corresponding to the large hole. It is preferable to have a configuration in which the sound emitting plate portion is adhered to the double-sided tape.
In this invention, by using a double-sided tape of a color different from the color of the sound emitting plate portion, the non-large hole portion of the sound emitting plate portion can be concealed. Even when a small hole is opened in a place other than the place to enhance the decoration effect, it is possible to prevent the reflected light reflected by the non-large hole portion of the sound emitting plate portion from being emitted linearly in the small hole. .

In addition, a display device according to the present invention includes a display unit having a display surface, a support that supports the display unit, and the speaker device according to the invention that is mounted on one side of the display unit. And
In this invention, when the light that has entered the small hole of the decorative plate from the outside hits around the large hole of the sound emitting plate part, it is inclined with respect to the central axis of the large hole on the inclined surface of the large hole. The reflected light reflected around the large hole can be prevented from being emitted linearly within the small hole, so the area around the large hole is not masked around the large hole. It is possible to make it difficult to see the sound emitting plate portion through the small hole.

  According to the present invention, when light entering the small hole of the decorative plate from the outside hits around the large hole of the sound emitting plate part, the light is inclined with respect to the central axis of the large hole on the inclined surface of the large hole. The reflected light reflected around the large hole can be prevented from linearly exiting the inside of the small hole, so that the mask around the large hole is not masked. The sound emitting plate portion can be made difficult to see through the small hole.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a front view showing a configuration of a display device equipped with a speaker device according to the present invention, FIG. 2 is an enlarged vertical sectional view of a part of the display device, and FIG. 3 is a state in which a decorative plate of the display device is removed. FIG. 4 shows a configuration of a decorative plate, (a) is a front view in which one end is enlarged, (b) is a rear view in which one end is enlarged, and FIG. 5 is a decorative plate. FIG. 6 is an enlarged front view of a state in which a decorative plate of the display device is attached, and FIG. 7 is an enlarged cross-sectional view of the speaker device portion.

  The illustrated speaker device A is a device that displays a television image or the like and is attached to the lower portion of the display device 20 having a substantially rectangular shape in front view, and is integrally formed with the lower portion of the front cabinet 21 in the display device 20. The sound emitting plate portion 1, a speaker 2 disposed on the rear side of the sound emitting plate portion 1, and a decorative plate 3 that decorates the outer surface of the sound emitting plate portion 1 are provided.

  The sound emitting plate portion 1 is formed in a belt shape along the both side edges of the front cabinet 21 with a black synthetic resin material together with the front cabinet 21, and outputs sound to both sides in the longitudinal direction of the sound emitting plate portion 1. A plurality of large holes 11 are opened in the lateral direction. In addition, a recess 12 corresponding to the decorative plate 3 is provided on the outer surface of the sound emitting plate portion 1 leaving a peripheral portion, and a relatively bright color such as silver is provided on the outer surface of the sound emitting plate portion 1 and the outer surface of the front cabinet 21. The paint is painted and has a light color.

  The large hole 11 has a rectangular shape as shown in FIG. 3, and one edge side (outer surface side) facing the decorative plate 3 of the large hole 11 is widened in a direction inclined with respect to the central axis O of the large hole 11. In FIG. 7, the cross-sectional shape of the shaft is trapezoidal by widening at an inclination angle of about 45 degrees from the middle to the edge of the large hole 11, and the large hole 11 is also coated with the paint.

  The decorative plate 3 is formed by molding a metal plate of the same color as the sound emitting plate portion 1, is formed in a size corresponding to the recess 12 of the sound emitting plate portion 1, and is smaller than the large hole 11. A hole 31 is opened over the entire surface. The small holes 31 are round holes having a relatively small diameter, and are opened relatively close to each other. A black double-sided tape 4 is attached to the back surface of the decorative plate 3.

  The double-sided tape 4 is formed in a size substantially equal to that of the decorative plate 3, and a through hole 41 larger than the large hole 11 is opened at a position corresponding to the large hole 11 of the sound emitting plate part 1. As shown in FIG. 7, the through-hole 41 is formed in a size arranged between one edge and the other edge of the large hole 11. The double-sided tape 4 may be entirely black, or only the decorative plate 3 side may be black.

  The speaker 2 holds the sound source 2a for low sound, the sound source 2b for medium / high temperature, and the sound sources 2a and 2b side by side, and the low sound generated by one sound source 2a and the other sound source 2b are generated. A holding case having an audio output part that emits medium and high-temperature audio to the large hole 11 (front), and the holding case is disposed behind both sides in the longitudinal direction of the audio emission plate part 1, and the audio output part Is configured to emit sound emitted from the large hole 11 forward.

  As shown in FIG. 6, the speaker device A configured as described above has a plurality of large holes 11 on both sides and is formed in the recess 12 of the sound emitting plate portion 1 painted in a bright color silver. The small holes 31 are opened over the entire surface, and the decorative plate 3 having the same color as the sound emitting plate 1 is pasted by the black double-sided tape 4 having the through holes 41 corresponding to the large holes 11. When visually observed on the front side of the display device, the presence of the speaker 2 disposed on the rear side of the sound emitting plate portion 1 can be eliminated, and the design on the front side of the front cabinet 21 in the display device has a slim impression. Can show.

  The sound generated by the speaker 2 is output forward from the large hole 11 of the sound emitting plate part 1 through the through hole 41 and the small hole 31. The light that has entered the small hole 31 of the decorative plate 3 from the front of the sound emitting plate portion 1 hits the double-sided tape 4 and passes through the through hole 41 of the double-sided tape 4 to the large hole 11 of the sound emitting plate portion 1. Hit around.

  Since the double-sided tape 4 is black, the light hitting the double-sided tape 4 is not reflected and the inside of the small hole 31 looks dark. The light striking around the large hole 11 of the sound emitting plate part 1 hits the inclined surface 11a having a trapezoidal cross section of the large hole 11, is reflected in a direction different from the light incident direction by the inclined surface 11a, and enters the small hole 31 from the front. Does not reflect in the direction of light. Therefore, when the decorative plate 3 is visually observed on the front side of the display device, the inside of the small hole 31 looks dark, and the sound emitting plate portion 1 having a bright color is difficult to see from the small hole 31. As described above, when the front cabinet 21 and the sound emitting plate portion 1 in the display device have a bright color tone, the reflected light reflected around the large hole 11 is not masked around the large hole 11 and is reflected in the small hole 31. Therefore, the presence of the speaker 2 disposed on the rear side of the sound emitting plate portion 1 can be eliminated without increasing the number of components.

  As described above, the display device 20 to which the speaker device is attached includes the display unit 22 having a display surface 22a for displaying a television image or the like on the front side, and the backlight unit 23 arranged on the rear side of the display unit 22. The optical sheet 24 arranged between the backlight unit 23 and the display unit 22, the front cabinet 21 covering the peripheral part of the display unit 22 and the backlight unit 23, and the peripheral part and the rear side of the backlight unit 23 A cabinet 25 and a stand 26 that supports the display unit 22 and the backlight unit 23 in an upright state, and the sound corresponding to the image displayed on the display surface 22a is transmitted to the speakers 2, 2 on both sides in the horizontal direction. It is comprised so that it may discharge | release forward. The backlight unit 23 constitutes a support that supports the display unit 22.

  In the above-described embodiment, the configuration in which the decorative plate 3 is arranged over substantially the entire lower width of the display device and the small holes 31 are opened over almost the entire surface of the decorative plate 3 has been described. In addition, it is good also as a structure by which the decoration board 3 is distribute | arranged only in the location corresponding to the speakers 2 and 2. FIG.

  Moreover, although it was set as the structure provided with the decorating board 3 with which the small hole 31 was opened over the location where the large hole 11 is not established, the decorative plate 3 is small hole 31 only in the location corresponding to the large hole 11. May be configured. In this case, the double-sided tape 4 may not be black. Further, the large hole 11 may have a rectangular shape or a circular shape, and the shape is not particularly limited.

  In the embodiment described above, the decorative plate 3 is attached with the black double-sided tape 4 so as to prevent light from being reflected at a portion where the large hole 11 is not opened. A configuration in which the decorative plate 3 is attached by a sheet member in which a dark sheet having a through hole 41 corresponding to the large hole 11 is bonded to the inner edge of the frame-like double-sided tape 4 attached to the peripheral edge of the plate 3 Alternatively, a through-hole 41 corresponding to the large hole 11 is opened, and a structure is provided that includes a dark color sheet bonded to the back surface of the decorative plate 3 by a bonding means such as an adhesive, and the dark color sheet is emitted as sound. The decorative plate 3 may be attached by joining to the plate portion 1.

  The display device according to the present invention may be a liquid crystal display device such as a liquid crystal television, or a display device such as a plasma display device or an EL display.

It is a front view which shows the structure of the display apparatus with which the speaker apparatus based on this invention was mounted | worn. It is the longitudinal cross-sectional view which expanded a part of display apparatus which concerns on this invention. It is the front view which expanded a part of the state which has removed the decoration board of the display apparatus which concerns on this invention. The configuration of the decorative board is shown, in which (a) is a front view in which one end side is enlarged, and (b) is a rear view in which one end side is enlarged. It is a front view which shows the relationship between a decoration board and a double-sided tape. It is the front view which expanded a part of the state which has attached the decoration board of the display apparatus which concerns on this invention. It is the cross-sectional view which expanded the speaker apparatus part which concerns on this invention. It is the front view which expanded a part of the state which has removed the decoration board of the display apparatus which the applicant of this invention developed previously. It is a front view which shows the structure of a part of decorative board by which the double-sided tape is stuck on the back surface. 1 shows a state in which a decorative plate of a display device previously developed by the applicant of the present invention is attached, (a) is a partially enlarged front view, and (b) is a cross-sectional view. It is a cross-sectional view which shows the improvement plan of the display apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sound emission board part 11 Large hole 3 Decoration board 31 Small hole 4 Double-sided tape 41 Through-hole 20 Display apparatus 22 Display part 22a Display surface 23 Backlight part (support body)

Claims (4)

  In a speaker device including a sound emitting plate portion having a large hole and a decorative plate having a plurality of small holes and decorating one surface of the sound emitting plate portion, the large hole has a side facing the decorative plate. A speaker device, wherein the speaker device is widened in a direction inclined with respect to the central axis of the large hole.   The speaker device according to claim 1, wherein an axial cross-sectional shape of the large hole is a trapezoid.   One surface of the sound emitting plate portion and the inside of the large hole are painted, and the decorative plate is attached to the sound emitting plate portion by a double-sided tape having a through hole larger than the large hole at a location corresponding to the large hole. The speaker device according to claim 1 or 2, wherein the speaker device is attached.   A display unit having a display surface, a support that supports the display unit, and the speaker device according to any one of claims 1 to 3 that is mounted on one side of the display unit. Display device.

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