JP4716914B2 - Audio output device and display device including the same - Google Patents

Description

  The present invention relates to a sound output device that outputs sound generated by a sound source to the outside, and a display device that includes the sound output device.

  Audio output devices are used in display devices such as televisions. The audio output device also includes a housing having a sound source and a sound output hole for outputting the sound generated by the sound source to the outside, and a punching net that is attached to the housing by ultrasonic welding to decorate the sound output unit. Etc. (for example, refer patent document 1).

By the way, since the audio output device is formed in a size corresponding to the display device, when the display device is enlarged, the audio output device needs to be enlarged.
Japanese Patent Laid-Open No. 5-183977

  In the audio output device in which the decorative plate is attached by ultrasonic welding as in Patent Document 1, the ultrasonic welding device is also enlarged in response to the increase in size of the display device and the audio output device, and the welding capability is increased. There is a need. However, if an ultrasonic welding apparatus having a high welding capability is developed, development costs and equipment costs increase. Therefore, when the display device and the audio output device are relatively large, the ultrasonic welding device is used instead of the ultrasonic welding device. As shown in FIG. 3, the housing 100 is provided with a plurality of locking holes 101, a plurality of locking pieces 102 locked to the locking holes 101 are provided on the decorative plate 103, and the locking pieces 102 are locked. After the insertion into the hole 101, the decorative plate 103 is attached to the housing 100 by bending the respective leading ends of the locking pieces 102.

  However, in the configuration provided with the locking pieces 102, since the plurality of locking pieces 102 have the decorative plate 103 attached thereto, the folding state of the locking pieces 102 varies, and this bent state is poor. At the attachment location, chatter noise is generated on the decorative plate 103 by the sound output to the outside from the sound output hole, and an improvement measure has been demanded.

  The present invention has been made in view of such circumstances, and a main object thereof is to provide a vibration suppressing body that suppresses vibration of the decorative plate due to sound generated by a sound source at a location separated from a location where the decorative plate is attached. An object of the present invention is to provide an audio output device that can prevent chatter noises from being generated on a decorative board.

  Another object is to provide a locking hole in the housing to which the decorative plate is attached, the locking piece to be inserted into the locking hole, and the locking piece to be bent when inserted into the locking hole. Audio output that can prevent chatter noise from being generated at the locking piece portion of the decorative plate by providing a flexible portion on the decorative plate that elastically restores and presses the locking piece against the inner surface of the locking hole. To provide an apparatus.

  Another object is to provide a vibration suppressor with a plurality of locking holes provided in the housing, and the locking pieces inserted into the locking holes and the locking pieces inserted into the locking holes. When the decorative plate is provided with a flexible portion that bends when being bent and elastically recovers after insertion and presses the locking piece against the inner surface of the locking hole, it prevents chatter noise from being generated at the locking piece portion. An object of the present invention is to provide an audio output device capable of

  Another object is to provide a sound output that can reduce the number of parts for a plurality of flexible pieces as vibration suppression bodies by integrally forming a flexible piece that presses the decorative plate in a direction away from the case with the case. To provide an apparatus.

  Another object of the present invention is to provide an audio output device that can further prevent chatter noises from being generated on a decorative board by forming a vibration suppressing body from a flexible material.

  Another object of the present invention is to provide an audio output device capable of improving the workability of the vibration suppression body formed of the flexible material by providing the housing with a fitting recess into which the vibration suppression body formed of the flexible material is to be inserted. Is to provide.

  Another object is to form the tongue piece integrally with the locking piece, and to make the tongue piece a flexible portion, thereby reducing the cost of the sound output device that can reduce the number of parts for having the flexible portion. To provide an output device.

  Another object of the present invention is to provide a display device that can prevent chatter noise from being generated on the decorative plate of the audio output device by providing the audio output device on one side of the display unit. .

An audio output device according to the present invention includes a housing having an audio output unit that outputs sound generated by a sound source to the outside, and a decorative plate that is detachably attached to the housing and decorates the audio output unit side. In the audio output device, a vibration suppression body that suppresses vibration of the decorative plate due to the sound is provided at a location separated from a location where the decorative plate is attached , and the casing includes a plurality of engagement members around the audio output unit. The edge of the stop hole and the edge of the stop hole has a convex portion that continues through a removal step portion, the decorative plate is inserted into the stop hole, and the stop piece is inserted into the stop hole. A flexible portion that bends when inserted, elastically recovers after insertion, contacts the convex portion, presses the locking piece against the inner surface of the locking hole, and is locked to the retaining step portion; It is characterized by.

In this invention, the vibration caused by the sound of the decorative plate that can be attached to the housing in a removable manner can be suppressed by the vibration suppressor provided at a location separated from the location where the decorative plate is attached. It is possible to prevent chatter noise. In addition, the decorative plate can be attached to the housing by inserting a plurality of locking pieces provided on the decorative plate into the locking holes of the housing. Further, when the locking piece is inserted into the locking hole, the flexible portion is bent, and the locking piece can be pressed against the inner surface of the locking hole, thereby preventing chattering noise from being generated on the decorative plate. it can.

An audio output device according to the present invention includes a housing having an audio output unit that outputs sound generated by a sound source to the outside, and a decorative plate that is detachably attached to the housing and decorates the audio output unit side. In the audio output device, the housing includes a plurality of locking holes around the audio output portion and a convex portion connected to an edge of the locking hole through a stopper step , and the decorative plate has the locking hole. Each of the locking pieces inserted into the locking holes is bent when the locking pieces are inserted into the locking holes, is elastically restored after insertion and abuts on the convex portions, and the locking pieces are inserted into the locking holes. pressed against the inner surface, and characterized by having said locked Ru flexible portion on the retaining stepped portion.

In the this invention, a plurality of locking pieces provided on the decorative plate can be attached to the decorative plate to the housing by inserting the locking hole of the housing. Further, when the locking piece is inserted into the locking hole, the flexible portion is bent, and the locking piece can be pressed against the inner surface of the locking hole, thereby preventing chattering noise from being generated on the decorative plate. it can.

  In the audio output device according to the present invention, the flexible portion is a tongue piece integrally formed with the locking piece.

  In this invention, since the flexible part is integrally formed with the locking piece, the number of parts can be reduced for the flexible part, and the cost of the audio output device can be reduced.

The display device according to the present invention includes a display unit having a display surface, a support that supports the display unit, and the audio output device according to the invention that is mounted on one side of the display unit. Features.

In the present invention can prevent the vibration suppressing body vibrations by voice decorative plate which is mounted for the outer Mr taken to the housing of the audio output device and / or the flexible portion, chatters decorative plate Can be prevented.

  As described above in detail, according to the present invention, the vibration caused by the sound of the decorative plate that is detachably attached to the housing can be suppressed by the vibration suppressing body, and the chatter noise can be prevented from being generated on the decorative plate. it can.

  Further, according to the present invention, when the locking piece for attaching the decorative plate to the housing is inserted into the locking hole, the flexible portion bends, and the locking piece can be pressed against the inner surface of the locking hole. It is possible to prevent chatter noises from being generated on the decorative board.

  According to the present invention, in the configuration including the vibration suppressing body, when the locking piece for attaching the decorative plate to the housing is inserted into the locking hole, the flexible portion bends, and the locking piece is connected to the inner surface of the locking hole. Therefore, chattering noise can be prevented from being generated on the decorative plate.

  In addition, according to the present invention, since the flexible piece as the vibration suppressing body is integrally formed with the housing, the number of parts can be reduced while providing a plurality of vibration suppressing bodies, and the cost of the audio output device can be reduced.

  Moreover, according to this invention, since the damping property of the vibration suppression body formed with the flexible material can be improved, it is possible to further prevent chatter noises from being generated on the decorative board.

  Moreover, according to this invention, since a vibration suppression body can be mounted | worn by inserting a vibration suppression body in an insertion recessed part, the assembly workability | operativity of the vibration suppression body formed with the flexible material can be improved.

  Further, according to the present invention, since the flexible portion is integrally formed with the locking piece, the number of parts can be reduced for the flexible portion, and the cost of the audio output device can be reduced.

  Further, according to the present invention, in the present invention, vibration due to the sound of the decorative plate that is detachably attached to the housing of the sound output device can be prevented by the vibration suppressing body and / or the flexible portion. It is possible to prevent chatter noises from being generated on the decorative board.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a front view showing the configuration of a display device equipped with the audio output device according to the present invention, FIGS. 2 and 3 are cross-sectional views showing the configuration of the audio output device, and FIG. 4 shows the configuration of the housing of the audio output device. FIG. 5 is an enlarged cross-sectional view showing the structure of the main part, FIG. 6 is a plan view showing the structure of the locking claw part of the housing, FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. FIG. 9 is a cross-sectional view showing the configuration of the flexible piece portion of the housing, FIG. 10 is a plan view showing the configuration of a part of the decorative plate, and FIG. 11 is a sectional view taken along line XI-XI in FIG. FIG. 12 is an enlarged cross-sectional view, and FIG. 12 is a side view showing the configuration of the decorative board.

  The illustrated audio output device is a device that displays a television image and is attached to the lower part of a display device 20 that is substantially rectangular in front view, and supports the sound source 1 such as a Uber and the sound source 1, and the display device 20. A support body 2 attached to the rear cabinet 21, a housing 3 that houses the support body 2 and has a sound output hole group 31 that outputs sound generated by the sound source 1 to the outside, and an audio output of the housing 3 A metal decorative plate 4 that is detachably attached around the hole group 31 and decorates the sound output hole group 31 side, and a vibration suppressing body 5 that suppresses vibration of the decorative plate 4 due to the sound. It is formed in a substantially rectangular shape having a relatively long lateral length compared to the vertical width (see FIG. 1).

  The sound source 1 includes two speakers 11 and 11 that generate a low-frequency sound wave, a woofer 12 that generates a high-frequency sound wave, and a tweeter 13 that generates a high-frequency sound wave, which are laterally spaced apart from each other. ing.

  The housing 3 includes a hole plate portion 32 having a sound output hole group 31 facing the sound wave output side of the sound source 1 and a rectangular tube portion 33 continuous to the periphery of the hole plate portion 32, and is integrally formed of a synthetic resin. The cloth net member 6 is attached to the surface of the hole plate portion 32.

The hole plate portion 32 has a rectangular shallow dish shape, the rectangular tube portion 33 has a rectangular shape, and a step portion 34 is provided between the long side portion of the hole plate portion 32 and the long side portion of the square tube portion 33, A plurality of first locking holes 35 in the step 34 and a locking recess 36 connected to the inner edge of the first locking hole 35 , in other words, locked to the inner edge of the first locking hole 35 as shown in FIG. Convex portions extending in the direction of the central axis of the first locking hole 35 are provided apart from each other in the longitudinal direction of the hole plate portion 32. A second locking hole 37 is provided in the two short sides of the hole plate 32. The sound output hole group 31 is formed in a lattice shape, and a plurality of flexible pieces 38 that press the decorative plate 4 in a direction away from the hole plate part 32 around the sound output hole group 31 are formed on the hole plate part 32. They are spaced apart in the circumferential direction (see FIG. 8).

  The flexible piece 38 is integrally formed at a plurality of locations connected to the holes of the audio output hole group 31, and a convex portion 38 a that protrudes outward from the surface of the hole plate portion 32 is provided at the distal end portion of the flexible piece 38. (Refer FIG. 9) The convex part 38a contacts the decoration board 4, and is pressing the decoration board 4 in the direction separated from the hole board part 32 (refer FIG. 5).

  The first and second locking holes 35 and 37 are long holes having a rectangular cross section, and a pair of protrusions having an inner edge opening distance shorter than an outer edge opening distance is provided in the middle of the long side portion of the first locking hole. The portions 35a and 35a are provided, and a locking piece 43 described later is guided by the convex portions 35a and 35a on both sides (see FIG. 5).

  The decorative plate 4 has a substantially rectangular shape corresponding to the hole plate portion 32 (see FIGS. 11 and 12), and a relatively small-diameter round hole 41 is formed on almost the entire surface. Further, an inwardly extending piece 41 facing the step portion 34, an outwardly extending piece 42 extending outward from the inwardly extending piece 41, and an outwardly extending direction from the outwardly extending piece 42 are provided on the long side edge. The first and second locking pieces 43 and 44 are integrally formed with the first and second locking holes 35 and 37. (See FIGS. 10 to 12)

The first locking piece 43 is integrally formed with a tongue piece 45 which is surrounded by a substantially U-shaped through hole and which is inclined with respect to the insertion direction of the locking piece 43 into the locking hole 35 (FIG. 6). reference). The tongue piece 45 bends into the through hole when the first locking piece 43 is inserted into the first locking hole 35, and is elastically restored after insertion so as to prevent the retaining recess 36 , in other words, the first engagement. The first engagement member is locked to a retaining stepped portion connected to the inner edge of the retaining hole 35 (see FIG. 5) and abuts against the convex portion continued to the inner edge of the first retaining hole 35 through the retaining step portion . The stop piece 43 is pressed against the inner surface of the first locking hole 35 (see FIGS. 5 and 7). The second locking piece 44 has no tongue piece 45 and is inserted into the second locking hole 37 and is in contact with the inner surface of the locking hole 37.

  In the audio output device configured as described above, three types of sound sources 1 are juxtaposed on the support 2 attached to the lower portion of the rear cabinet 21 of the display device 20 by means of bolts or the like. First and second locking pieces 43 and 44 projecting from the peripheral edge of the decorative plate 4 in the first and second locking holes 35 and 37 opened on the outer peripheral side of the housing 3 to be accommodated, respectively. The decorative plate 4 is attached to the housing 3 by inserting.

  When the first locking piece 43 is inserted into the first locking hole 35, the tongue piece 45 provided in the first locking piece 43 bends and the first locking piece 43 together with the tongue piece 45 is bent. After the insertion, the tongue piece 45 is elastically restored and comes into contact with the retaining recess 36 to prevent the first locking piece 43 from being pulled out, and the attachment state of the decorative plate 4 can be maintained. In addition, the first locking piece 43 is pressed against the inner surface of the first locking hole 35 by elastic restoration of the tongue piece 45 (see FIG. 5).

  The inner surface of the decorative plate 4 is in contact with the convex portions 38a of the plurality of flexible pieces 38 via the net member 5, and the decorative plate 4 is pressed in a direction (front) away from the hole plate portion 32 of the housing 3. The inwardly extending piece 41 of the decorative plate 4 is separated from the step portion 34, and a gap is formed as shown in FIG.

  Thus, the decorative plate 4 has the flexible piece 38 in contact with the inner surface of the portion facing the sound output hole group 31, and the first locking piece 43 is pressed against the inner surface of the first locking hole 35. Therefore, it is possible to prevent the decorative plate 4 from vibrating with respect to the housing 3 due to the sound output from the sound output hole group 31, and to prevent the chatter sound from being generated by the decorative plate 4.

  Further, since the tongue piece 45 is provided integrally with the first locking piece 43, the number of parts can be reduced while the chatter noise can be eliminated at the locking piece 43 portion, and the cost can be reduced.

  As described above, the display device 20 to which the audio output device is mounted includes the display unit 22 having the display surface 22a for displaying a television image, the front cabinet 23 surrounding the periphery of the display unit 22, and the display unit 22 A rear cabinet 21 that covers the rear side and a stand 24 that supports the display unit 22 in an upright state are provided, and sound corresponding to an image displayed on the display surface 22 a is output from the sound source 1.

  FIG. 13 is a cross-sectional view showing another configuration of the main part of the audio output device. In the embodiment described above, the flexible piece 38 is integrally provided in the hole plate portion 32 of the housing 3 as the vibration suppressing body 5 that presses the decorative plate 4 in the direction away from the housing 3. An insertion recess 39 such as a groove is provided on the surface of 32, and the vibration suppressing body 7 formed of a flexible material such as rubber or sponge is fitted into the insertion recess 39 by a fixing means such as insertion or adhesion. .

  FIG. 14 is a cross-sectional view showing another configuration of the main part of the audio output device. In the embodiment described above, the vibration suppressing body 5 (flexible piece 38) or the vibration suppressing body 7 that presses the decorative plate 4 in the direction away from the housing 3 and the first locking piece 43 are the first. The tongue piece 45 to be pressed against the inner surface of the locking hole 35 is provided, but in addition, one of the vibration suppressing body (flexible piece 38) or the vibration suppressing body 7 and the tongue piece 45 is eliminated. It is good also as a structure provided only with the other. In this case, when the vibration suppressing bodies 5 and 7 are eliminated, the decorative plate 4 is separated from the hole plate portion 32 so as not to generate the chatter noise, and when the tongue piece 45 is eliminated, The tip end portion of the first locking piece 43 inserted into the first locking hole 35 is bent so that no gap is formed in the bent portion.

  In addition to the liquid crystal display device such as a liquid crystal television, the display device according to the present invention may be 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 audio | voice output apparatus which concerns on this invention was mounted | worn. It is sectional drawing which shows the structure of the audio | voice output apparatus which concerns on this invention. It is sectional drawing which shows the structure of the audio | voice output apparatus which concerns on this invention. It is a rear view which shows the structure of the housing of the audio | voice output apparatus which concerns on this invention. It is an expanded sectional view which shows the structure of the principal part of the audio | voice output apparatus which concerns on this invention. It is a top view which shows the structure of the latching claw part of the housing of the audio | voice output apparatus which concerns on this invention. It is sectional drawing of the VII-VII line of FIG. It is a front view which shows the structure of the housing of the audio | voice output apparatus which concerns on this invention. It is sectional drawing which shows the structure of the flexible piece part of the housing of the audio | voice output apparatus which concerns on this invention. It is a top view which shows the structure of a part of decoration board of the audio | voice output apparatus which concerns on this invention. It is an expanded sectional view of the XI-XI line of FIG. It is a side view which shows the structure of the decoration board of the audio | voice output apparatus which concerns on this invention. It is sectional drawing which shows the other structure of the principal part of the audio | voice output apparatus which concerns on this invention. It is sectional drawing which shows the other structure of the principal part of the audio | voice output apparatus which concerns on this invention. It is sectional drawing to which some conventional audio output devices were expanded.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sound source 3 Housing 31 Audio | voice output hole group (audio | voice output part)
35 Locking hole 38 Flexible piece (vibration suppressor)
39 Insertion recess 4 Decorative plate 43 Locking piece 45 Tongue piece (flexible part)
6 Vibration suppressor

Claims (4)

An audio output device comprising: a housing having a sound output unit for outputting sound generated by a sound source to the outside; and a decorative plate that is detachably attached to the housing and decorates the sound output unit side. A vibration suppressing body that suppresses vibration of the decorative plate due to the sound is provided at a position separated from a place to be attached, and the housing includes a plurality of locking holes and edges of the locking holes around the sound output unit. And the decorative plate is bent when the locking piece is inserted into the locking hole and after the insertion. and elastic restoring contact with the convex portion, the engagement presses the locking piece on the inner surface of the locking hole, and the audio output apparatus characterized by having a locked Ru flexible portion on the retaining stepped portion. In a sound output device comprising: a housing having a sound output unit that outputs sound generated by a sound source to the outside; and a decorative plate that is detachably attached to the housing and decorates the sound output unit side. A plurality of locking holes around the audio output portion and a convex portion connected to the edge of the locking hole via a removal step portion; and the decorative plate includes a locking piece inserted into each of the locking holes, and the The locking piece bends when inserted into the locking hole, elastically recovers after insertion , contacts the convex part, presses the locking piece against the inner surface of the locking hole , and engages with the retaining step part. an audio output apparatus characterized by having a flexible portion which Ru locked. The flexible portion is an audio output device according to claim 1 or 2, wherein a tongue which is integrally molded with the locking piece. Wherein a display unit having a display surface, and a support for supporting the display unit, further comprising an audio output device according to any one of claims 1 to 3 is mounted on one side of the display unit Display device.

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