WO2011040321A1 - Image display device - Google Patents

Image display device Download PDF

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Publication number
WO2011040321A1
WO2011040321A1 PCT/JP2010/066526 JP2010066526W WO2011040321A1 WO 2011040321 A1 WO2011040321 A1 WO 2011040321A1 JP 2010066526 W JP2010066526 W JP 2010066526W WO 2011040321 A1 WO2011040321 A1 WO 2011040321A1
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WO
WIPO (PCT)
Prior art keywords
sound
bottom wall
image display
cabinet
speaker
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PCT/JP2010/066526
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French (fr)
Japanese (ja)
Inventor
雅眞 向出
涛 宋
建明 肖
▲シャオ▼ 余
可明 ▲リウ▼
▲継▼▲東▼ 毛
威 ▲ハオ▼
Original Assignee
三洋電機株式会社
深▲せん▼華強三洋技術設計有限公司
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Application filed by 三洋電機株式会社, 深▲せん▼華強三洋技術設計有限公司 filed Critical 三洋電機株式会社
Publication of WO2011040321A1 publication Critical patent/WO2011040321A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals

Definitions

  • the present invention relates to an image display device such as a television receiver or an image monitor.
  • a front cabinet and a back cabinet are joined together to form a thin casing, and a flat display and a pair of left and right speakers are arranged inside the casing.
  • the front cabinet is provided with an image display window for displaying an image on the display, and a sound emission hole for emitting sound waves emitted from a pair of left and right speakers is formed at a position below the image display window. Has been.
  • a speaker is attached to the bottom of the back cabinet and the back A sound emitting hole is opened in the bottom wall portion of the cabinet, and sound waves emitted from the speaker are emitted downward from the sound emitting hole.
  • the front panel portion of the front cabinet only needs to be formed slightly larger than the screen size of the display, and the sound emission hole can be hidden from the viewer's line of sight. Can be realized.
  • the television receiver since the sound wave emitted from the speaker is emitted downward from the sound emission hole, the television receiver is provided with a sound emission hole in the front panel portion to emit the sound wave from the speaker forward. There was a problem that the sound quality was worse than.
  • an object of the present invention is to provide an image display device in which sound emission holes are hardly visible from the viewer side and a good sound quality can be obtained.
  • a flat display and a speaker are arranged inside a casing formed by joining a front cabinet and a back cabinet to each other.
  • the front cabinet is provided with an image display window for displaying an image on the display, and a sound emitting hole for emitting a sound wave emitted from a speaker.
  • the front cabinet has a front panel portion that surrounds the image display window, and a bottom wall portion that extends from the front panel portion to a lower position of the display toward the back cabinet side, and the bottom wall portion is low on the back cabinet side.
  • the sound emitting hole is inclined and the sound emitting hole is opened in the bottom wall, and the speaker is attached to the back cabinet in a posture in which the sound emitting direction is obliquely downward, and the sound wave emitted from the speaker is transmitted to the speaker.
  • a sound guide bracket for guiding to the sound output hole is attached, and the sound guide bracket extends toward the sound output hole through a space formed between a display and a bottom wall portion of the front cabinet. It is opened at a position opposite to.
  • the sound wave emitted from the speaker is guided to the sound emission hole of the front cabinet through the sound guide bracket.
  • the sound emission hole is formed in the bottom wall portion of the front cabinet, and the bottom wall portion is inclined with an elevation angle of less than 90 degrees when viewed from the viewer side, and the sound guide bracket is emitted from the speaker. Therefore, the sound wave emitted from the sound emitting hole travels forward toward the viewer. Therefore, a high sound quality can be obtained as compared with a conventional image display device that emits sound waves downward from the sound emission holes.
  • the bottom wall portion of the front cabinet where the sound emission holes are opened is inclined with an elevation angle of less than 90 degrees when viewed from the viewer side, the height dimension along the vertical direction of the bottom wall portion is small, The sound emission holes opened in the bottom wall are only slightly visible from the viewer side.
  • the sound guide bracket has a bottom wall that closes a notch formed in a back cabinet, and the bottom wall has a sound release hole that allows sound waves traveling from the speaker toward the bottom wall to pass therethrough. Has been established. According to this specific aspect, the sound wave traveling from the speaker toward the bottom wall of the back cabinet passes through the sound release hole and is emitted to the outside and is not greatly reflected by the bottom wall. Can be suppressed.
  • the sound guide bracket is an integrally molded product of synthetic resin. According to this specific aspect, the manufacturing cost can be reduced as compared with the case where the sound guide bracket is constituted by a plurality of parts.
  • the sound emission hole is hardly visible from the viewer side, and still good sound quality can be obtained.
  • FIG. 1 is a front view of an image display apparatus according to the present invention.
  • FIG. 2 is a perspective view of the image display device as viewed from the front side.
  • FIG. 3 is a perspective view of the image display device as seen from the back side.
  • FIG. 4 is a longitudinal sectional view of the image display device.
  • FIG. 5 is a longitudinal sectional view showing a main part of the image display device.
  • FIG. 6 is a perspective view of the back cabinet as seen from the back side.
  • FIG. 7 is an exploded perspective view of the front cabinet and the back cabinet.
  • FIG. 8 is a perspective view of the front cabinet as seen from the back side.
  • FIG. 9 is a perspective view showing an assembled state of the speaker unit and the sound guide bracket.
  • FIG. 10 is an exploded perspective view of the speaker unit and the sound guide bracket.
  • FIG. 11 is a perspective view of the speaker unit.
  • FIG. 12 is a perspective view of the sound guide bracket.
  • the image display device supports a flat housing (1) having an image display window (11) and the housing (1) at a certain height position.
  • the case (1) includes a stand (2), and the front cabinet (3) and the back cabinet (4) are joined to each other.
  • the front cabinet (3) is provided with a pair of left and right sound emitting holes (12) and (12) exposed below the image display window (11).
  • a housing space for various components is formed between the front panel portion (31) of the front cabinet (3) and the back panel portion (41) of the back cabinet (4).
  • a flat display (5) is provided inside the front cabinet (3), and a pair of left and right speaker units (6) and (6) are provided at the bottom of the back cabinet (4).
  • the speaker unit (6) is provided with a sound guide bracket (7) for guiding sound waves to the sound emission hole (12).
  • the front cabinet (3) includes a frame-shaped front panel portion (31) surrounding the image display window (11) and a bottom wall portion extending rearward from the lower end of the front panel portion (31). (32).
  • the bottom wall portion (32) of the front cabinet (3) has a slight elevation angle (about 5 °) as shown in FIG. 5 and is inclined low toward the back cabinet (4). ) Is provided with the sound emitting hole (12).
  • the speaker unit (6) is attached so as to surround the speaker (61) having a soundtrack (65) having a horizontally long track shape and the sound outlet (65) of the speaker (61).
  • a frame (62), and flanges (63) and (63) project from both ends of the frame (62).
  • a pad (64) is provided on the front surface of the frame (62) so as to surround the sound emission opening (65).
  • the sound guide bracket (7) is an integrally molded product of synthetic resin. As shown in FIG. 12, the sound guide bracket (7) is a first sound guide portion (opened in a square shape) corresponding to the sound outlet (65) of the speaker unit (6). 71) and a second sound guide portion (72) pointed in a wedge shape toward the tip, and the outlet (73) of the first sound guide portion (71) to the outlet of the second sound guide portion (72) ( 74), a sound wave passage is formed.
  • a sound release hole (75) is formed in the bottom wall portion of the second sound guide portion (72). Further, a U-shaped ear portion (77) and a boss (76) project from both side portions of the first sound guide portion (71).
  • the speaker unit (6) is installed so as to cover the inlet (73) of the sound guide bracket (7), and the flange portions (63) and (63) of the speaker unit (6) are used as the sound guide bracket. It is fixed to the bosses (76) and (76) of (7) using screws (81) and (81).
  • a pair of left and right cutouts (43) and (43) are formed in the bottom wall portion (42) of the back cabinet (4), and the cutouts (43) and (43) are formed in the cutouts (43) and (43).
  • a pair of left and right sound guide brackets (7) and (7) are engaged, and both ear portions (77) and (77) of each sound guide bracket (7) are screwed to the bosses (44) and (44) of the back cabinet (4).
  • the sound release hole (75) of the sound guide bracket (7) is exposed on the bottom wall portion (42) of the back cabinet (4), and the outlet of the sound guide bracket (7) ( 74) protrudes toward the sound emission hole (12) of the front cabinet (3).
  • the speaker unit (6) has the sound emission direction of the front cabinet (3). Installed in an obliquely downward position toward the hole (12). Further, the sound guide bracket (7) has a sound emission hole (from the back cabinet (4) side) formed in a space formed between the bottom surface of the display (5) and the bottom wall portion (32) of the front cabinet (3). It extends toward 12) and opens at a position facing the sound emission hole (12).
  • the sound wave emitted from the speaker unit (6) is emitted obliquely forward from the sound emitting hole (12) of the front cabinet (3) through the sound guide bracket (7).
  • the image display device since the sound emission hole (12) is opened in the bottom wall portion (32) of the front cabinet (3), the outer shape of the front panel portion (31) of the front cabinet (3) is the image. What is necessary is just to form slightly larger than a display window (11). However, since the speaker unit (6) is arranged in the back cabinet (4), the space between the display (5) and the bottom wall (32) of the front cabinet (3) is made as small as possible. I can do it. As a result, the housing (1) can be downsized.
  • the bottom wall portion (32) of the front cabinet (3) has a slight elevation angle (about 5 °) and is inclined downward toward the back cabinet (4). Therefore, the height dimension along the vertical direction of the bottom wall portion (32) becomes small. And since the sound emission hole (12) is opened in the bottom wall part (32), as shown in FIG. 1, the sound emission hole (12) for the viewer watching the image display window (11). Is almost invisible.
  • the sound wave emitted from the speaker unit (6) is guided by the sound guide bracket (7) and emitted obliquely forward from the sound emission hole (12) of the front cabinet (3). Therefore, the sound quality is higher than that of a conventional image display device that emits sound waves downward from the sound emission holes.
  • the sound release hole (75) of the sound guide bracket (7) is opened on the bottom wall surface of the back cabinet (4), the speaker unit (6) faces the bottom wall surface of the back cabinet (4). Since the sound wave that travels through the sound vent hole (75) is emitted to the outside and is not largely reflected by the bottom wall surface, it is possible to suppress deterioration in sound quality due to sound reflection.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

Provided is an image display device having a sound output hole that almost cannot be seen from the viewer side and capable of obtaining a preferable sound quality. The image display device is equipped with a display (5) and a speaker unit (6) inside a chassis formed by joining a front cabinet (3) and a back cabinet (4) with each other. A bottom wall portion (32) of the front cabinet (3) is tilted down toward the back cabinet side, and a sound output hole (12) is opened on the bottom wall portion (32). The speaker unit (6) is attached to the back cabinet (4) with such a posture that the sound output direction of the speaker unit (6) is oriented obliquely downward. A sound guide bracket (7) is attached to the speaker unit (6). The sound guide bracket (7) extends toward the sound output hole (12) in a space formed between the display (5) and the bottom wall portion (32) of the front cabinet (3) and opens at a position facing the sound output hole (12).

Description

画像表示装置Image display device
　本発明は、テレビジョン受像機や画像モニター等の画像表示装置に関するものである。 The present invention relates to an image display device such as a television receiver or an image monitor.
　一般にテレビジョン受像機においては、フロントキャビネットとバックキャビネットを互いに接合して薄型の筐体が構成され、該筐体の内部に、平面型のディスプレイと左右一対のスピーカとが配備されている。そして、フロントキャビネットには、ディスプレイの画像を表示するための画像表示窓が設けられると共に、該画像表示窓の下方位置に、左右一対のスピーカから発せられる音波を放出するための放音孔が開設されている。 Generally, in a television receiver, a front cabinet and a back cabinet are joined together to form a thin casing, and a flat display and a pair of left and right speakers are arranged inside the casing. The front cabinet is provided with an image display window for displaying an image on the display, and a sound emission hole for emitting sound waves emitted from a pair of left and right speakers is formed at a position below the image display window. Has been.
　ところが、フロントキャビネットのフロントパネル部に画像表示窓と放音孔を設けたテレビジョン受像機においては、フロントパネル部の面積が大きくなり、然も視聴者からは放音孔が正面に見えるため、外観が損なわれる欠点がある。 However, in a television receiver having an image display window and a sound emission hole in the front panel part of the front cabinet, the area of the front panel part becomes large, and still the sound emission hole can be seen in front from the viewer. There is a drawback that the appearance is impaired.
　そこで、フロントキャビネットとバックキャビネットを互いに接合してなる筐体の内部に、平面型のディスプレイとスピーカとが配備されているテレビジョン受像機において、バックキャビネットの底部にスピーカを下向きに取り付けると共に、バックキャビネットの底壁部に放音孔を開設して、スピーカから発せられる音波を放音孔から下方へ放出することが行なわれている。 Therefore, in a television receiver in which a flat display and speakers are arranged inside a casing formed by joining a front cabinet and a back cabinet, a speaker is attached to the bottom of the back cabinet and the back A sound emitting hole is opened in the bottom wall portion of the cabinet, and sound waves emitted from the speaker are emitted downward from the sound emitting hole.
　この様なテレビジョン受像機においては、フロントキャビネットのフロントパネル部をディスプレイの画面の大きさよりも僅かに大きく形成すればよく、然も放音孔を視聴者の視線から隠すことが出来るので、良好な外観を実現することが出来る。 In such a television receiver, the front panel portion of the front cabinet only needs to be formed slightly larger than the screen size of the display, and the sound emission hole can be hidden from the viewer's line of sight. Can be realized.
　しかしながら、上記テレビジョン受像機においては、スピーカから発せられる音波が放音孔から下方へ放出されるため、フロントパネル部に放音孔を設けてスピーカからの音波を前方へ放出するテレビジョン受像機よりも音質が悪くなる問題があった。 However, in the above television receiver, since the sound wave emitted from the speaker is emitted downward from the sound emission hole, the television receiver is provided with a sound emission hole in the front panel portion to emit the sound wave from the speaker forward. There was a problem that the sound quality was worse than.
　そこで本発明の目的は、放音孔が視聴者側から殆ど見えず、然も良好な音質を得ることが出来る画像表示装置を提供することである。 Therefore, an object of the present invention is to provide an image display device in which sound emission holes are hardly visible from the viewer side and a good sound quality can be obtained.
　本発明に係る画像表示装置においては、フロントキャビネットとバックキャビネットを互いに接合してなる筐体の内部に、平面型のディスプレイとスピーカが配備されている。フロントキャビネットには、ディスプレイの画像を表示するための画像表示窓が設けられると共に、スピーカから発せられる音波を放出するための放音孔が開設されている。 In the image display device according to the present invention, a flat display and a speaker are arranged inside a casing formed by joining a front cabinet and a back cabinet to each other. The front cabinet is provided with an image display window for displaying an image on the display, and a sound emitting hole for emitting a sound wave emitted from a speaker.
　フロントキャビネットは、画像表示窓を包囲するフロントパネル部と、該フロントパネル部から前記ディスプレイの下方位置をバックキャビネット側へ伸びる底壁部とを有し、該底壁部は、バックキャビネット側に低く傾斜し、該底壁部に前記放音孔が開設され、スピーカは、その放音方向を斜め下方に向けた姿勢でバックキャビネットに取り付けられ、該スピーカには、スピーカから放出される音波を前記放音孔へ導くための導音ブラケットが取り付けられ、該導音ブラケットは、ディスプレイとフロントキャビネットの底壁部との間に形成される空間を前記放音孔へ向けて伸び、前記放音孔と対向する位置で開口している。 The front cabinet has a front panel portion that surrounds the image display window, and a bottom wall portion that extends from the front panel portion to a lower position of the display toward the back cabinet side, and the bottom wall portion is low on the back cabinet side. The sound emitting hole is inclined and the sound emitting hole is opened in the bottom wall, and the speaker is attached to the back cabinet in a posture in which the sound emitting direction is obliquely downward, and the sound wave emitted from the speaker is transmitted to the speaker. A sound guide bracket for guiding to the sound output hole is attached, and the sound guide bracket extends toward the sound output hole through a space formed between a display and a bottom wall portion of the front cabinet. It is opened at a position opposite to.
　上記画像表示装置においては、スピーカから発せられる音波が導音ブラケット内を経てフロントキャビネットの放音孔へ導かれる。
　ここで、放音孔はフロントキャビネットの底壁部に開設されており、該底壁部は、視聴者側から見て９０度未満の仰角をもって傾斜しており、導音ブラケットは、スピーカから発せられる音波を放音孔へ向けて導くので、放音孔から放出される音波は、視聴者に向かって前方へ進行することになる。従って、放音孔から下方へ音波を放出する従来の画像表示装置に比べて高い音質が得られる。 In the image display device, the sound wave emitted from the speaker is guided to the sound emission hole of the front cabinet through the sound guide bracket.
Here, the sound emission hole is formed in the bottom wall portion of the front cabinet, and the bottom wall portion is inclined with an elevation angle of less than 90 degrees when viewed from the viewer side, and the sound guide bracket is emitted from the speaker. Therefore, the sound wave emitted from the sound emitting hole travels forward toward the viewer. Therefore, a high sound quality can be obtained as compared with a conventional image display device that emits sound waves downward from the sound emission holes.
　又、放音孔が開設されているフロントキャビネットの底壁部は視聴者側から見て９０度未満の仰角をもって傾斜しているので、該底壁部の鉛直方向に沿う高さ寸法は小さく、該底壁部に開設されている放音孔は、視聴者側から僅かに見えるに過ぎない。 In addition, since the bottom wall portion of the front cabinet where the sound emission holes are opened is inclined with an elevation angle of less than 90 degrees when viewed from the viewer side, the height dimension along the vertical direction of the bottom wall portion is small, The sound emission holes opened in the bottom wall are only slightly visible from the viewer side.
　具体的態様において、前記導音ブラケットは、バックキャビネットに形成された切り欠き部を塞ぐ底壁を有し、該底壁には、スピーカから該底壁に向かって進む音波を通過させる音抜き孔が開設されている。
　該具体的態様によれば、スピーカからバックキャビネットの底壁に向かって進む音波が音抜き孔を通過して外部へ放出され、底壁で大きく反射されることがないので、音の反射による音質の低下を抑制することが出来る。 In a specific aspect, the sound guide bracket has a bottom wall that closes a notch formed in a back cabinet, and the bottom wall has a sound release hole that allows sound waves traveling from the speaker toward the bottom wall to pass therethrough. Has been established.
According to this specific aspect, the sound wave traveling from the speaker toward the bottom wall of the back cabinet passes through the sound release hole and is emitted to the outside and is not greatly reflected by the bottom wall. Can be suppressed.
　他の具体的態様において、前記導音ブラケットは、合成樹脂の一体成型品である。
　該具体的態様によれば、導音ブラケットを複数の部品から構成する場合よりも製造コストの低減が可能である。 In another specific embodiment, the sound guide bracket is an integrally molded product of synthetic resin.
According to this specific aspect, the manufacturing cost can be reduced as compared with the case where the sound guide bracket is constituted by a plurality of parts.
　本発明に係る画像表示装置によれば、放音孔が視聴者側から殆ど見えず、然も良好な音質を得ることが出来る。 According to the image display device of the present invention, the sound emission hole is hardly visible from the viewer side, and still good sound quality can be obtained.
図１は、本発明に係る画像表示装置の正面図である。FIG. 1 is a front view of an image display apparatus according to the present invention. 図２は、該画像表示装置を前面側から見た斜視図である。FIG. 2 is a perspective view of the image display device as viewed from the front side. 図３は、該画像表示装置を背面側から見た斜視図である。FIG. 3 is a perspective view of the image display device as seen from the back side. 図４は、該画像表示装置の縦断面図である。FIG. 4 is a longitudinal sectional view of the image display device. 図５は、該画像表示装置の要部を示す縦断面図である。FIG. 5 is a longitudinal sectional view showing a main part of the image display device. 図６は、バックキャビネットを背面側から見た斜視図である。FIG. 6 is a perspective view of the back cabinet as seen from the back side. 図７は、フロントキャビネットとバックキャビネットの分解斜視図である。FIG. 7 is an exploded perspective view of the front cabinet and the back cabinet. 図８は、フロントキャビネットを背面側から見た斜視図である。FIG. 8 is a perspective view of the front cabinet as seen from the back side. 図９は、スピーカユニットと導音ブラケットの組立状態を示す斜視図である。FIG. 9 is a perspective view showing an assembled state of the speaker unit and the sound guide bracket. 図１０は、スピーカユニットと導音ブラケットの分解斜視図である。FIG. 10 is an exploded perspective view of the speaker unit and the sound guide bracket. 図１１は、スピーカユニットの斜視図である。FIG. 11 is a perspective view of the speaker unit. 図１２は、導音ブラケットの斜視図である。FIG. 12 is a perspective view of the sound guide bracket.
　以下、本発明の実施の形態につき、図面に沿って具体的に説明する。
　本発明に係る画像表示装置は、図１～図３に示す如く、画像表示窓(11)を有する扁平な筐体(１)と、該筐体(１)を一定の高さ位置に支持するスタンド(２)とを具え、該筐体(１)は、フロントキャビネット(３)とバックキャビネット(４)を互いに接合して構成されている。フロントキャビネット(３)には、画像表示窓(11)の下方に露出する左右一対の放音孔(12)(12)が開設されている。 Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
As shown in FIGS. 1 to 3, the image display device according to the present invention supports a flat housing (1) having an image display window (11) and the housing (1) at a certain height position. The case (1) includes a stand (2), and the front cabinet (3) and the back cabinet (4) are joined to each other. The front cabinet (3) is provided with a pair of left and right sound emitting holes (12) and (12) exposed below the image display window (11).
　図４に示す如く、フロントキャビネット(３)のフロントパネル部(31)とバックキャビネット(４)のバックパネル部(41)との間に各種部品の収容空間が形成されている。
　そして、フロントキャビネット(３)の内部に平面型のディスプレイ(５)が配備されると共に、バックキャビネット(４)の底部には、左右一対となるスピーカユニット(６)(６)が配備され、各スピーカユニット(６)には、前記放音孔(12)へ音波を導くための導音ブラケット(７)が取り付けられている。 As shown in FIG. 4, a housing space for various components is formed between the front panel portion (31) of the front cabinet (3) and the back panel portion (41) of the back cabinet (4).
A flat display (5) is provided inside the front cabinet (3), and a pair of left and right speaker units (6) and (6) are provided at the bottom of the back cabinet (4). The speaker unit (6) is provided with a sound guide bracket (7) for guiding sound waves to the sound emission hole (12).
　フロントキャビネット(３)は、図８に示す如く、前記画像表示窓(11)を包囲する枠状のフロントパネル部(31)と、該フロントパネル部(31)の下端から後方へ伸びる底壁部(32)とを有している。
　フロントキャビネット(３)の底壁部(32)は、図５に示す如く僅かな仰角(約５°)を有してバックキャビネット(４)側に低く傾斜しており、該底壁部(32)に前記放音孔(12)が開設されている。 As shown in FIG. 8, the front cabinet (3) includes a frame-shaped front panel portion (31) surrounding the image display window (11) and a bottom wall portion extending rearward from the lower end of the front panel portion (31). (32).
The bottom wall portion (32) of the front cabinet (3) has a slight elevation angle (about 5 °) as shown in FIG. 5 and is inclined low toward the back cabinet (4). ) Is provided with the sound emitting hole (12).
　スピーカユニット(６)は、図１１に示す如く、横長トラック形状の放音口(65)を有するスピーカ(61)と、該スピーカ(61)の放音口(65)を包囲して取り付けられたフレーム(62)とを有し、該フレーム(62)の両端部には、フランジ部(63)(63)が突設されている。又、フレーム(62)の前面には、放音口(65)を包囲してパッド(64)が設置されている。 As shown in FIG. 11, the speaker unit (6) is attached so as to surround the speaker (61) having a soundtrack (65) having a horizontally long track shape and the sound outlet (65) of the speaker (61). A frame (62), and flanges (63) and (63) project from both ends of the frame (62). A pad (64) is provided on the front surface of the frame (62) so as to surround the sound emission opening (65).
　導音ブラケット(７)は合成樹脂の一体成型品であって、図１２に示す如く、前記スピーカユニット(６)の放音口(65)に対応して四角形に開口した第１導音部(71)と、先端に向かって楔状に尖った第２導音部(72)とから構成され、第１導音部(71)の入口(73)から第２導音部(72)の出口(74)まで音波の通路を形成している。第２導音部(72)の底壁部には音抜き孔(75)が開設されている。
　又、第１導音部(71)の両側部にはそれぞれ、Ｕ字状の耳部(77)とボス(76)とが突設されている。 The sound guide bracket (7) is an integrally molded product of synthetic resin. As shown in FIG. 12, the sound guide bracket (7) is a first sound guide portion (opened in a square shape) corresponding to the sound outlet (65) of the speaker unit (6). 71) and a second sound guide portion (72) pointed in a wedge shape toward the tip, and the outlet (73) of the first sound guide portion (71) to the outlet of the second sound guide portion (72) ( 74), a sound wave passage is formed. A sound release hole (75) is formed in the bottom wall portion of the second sound guide portion (72).
Further, a U-shaped ear portion (77) and a boss (76) project from both side portions of the first sound guide portion (71).
　図９及び図１０に示す如く、導音ブラケット(７)の入口(73)を覆ってスピーカユニット(６)が設置され、スピーカユニット(６)のフランジ部(63)(63)が導音ブラケット(７)のボス(76)(76)にビス(81)(81)を用いて固定される。 As shown in FIGS. 9 and 10, the speaker unit (6) is installed so as to cover the inlet (73) of the sound guide bracket (7), and the flange portions (63) and (63) of the speaker unit (6) are used as the sound guide bracket. It is fixed to the bosses (76) and (76) of (7) using screws (81) and (81).
　図６及び図７に示す如く、バックキャビネット(４)の底壁部(42)には左右一対の切り欠き(43)(43)が形成されており、該切り欠き(43)(43)に左右一対の導音ブラケット(７)(７)が係合し、各導音ブラケット(７)の両耳部(77)(77)がバックキャビネット(４)のボス(44)(44)にビス(８)(８)を用いて固定される。 6 and 7, a pair of left and right cutouts (43) and (43) are formed in the bottom wall portion (42) of the back cabinet (4), and the cutouts (43) and (43) are formed in the cutouts (43) and (43). A pair of left and right sound guide brackets (7) and (7) are engaged, and both ear portions (77) and (77) of each sound guide bracket (7) are screwed to the bosses (44) and (44) of the back cabinet (4). (8) It is fixed using (8).
　この結果、図７に示す様に、バックキャビネット(４)の底壁部(42)に導音ブラケット(７)の音抜き孔(75)が露出すると共に、導音ブラケット(７)の出口(74)がフロントキャビネット(３)の放音孔(12)へ向けて突出する。 As a result, as shown in FIG. 7, the sound release hole (75) of the sound guide bracket (7) is exposed on the bottom wall portion (42) of the back cabinet (4), and the outlet of the sound guide bracket (7) ( 74) protrudes toward the sound emission hole (12) of the front cabinet (3).
　この状態でフロントキャビネット(３)とバックキャビネット(４)とを互いに接合して一体化すると、図５に示す如く、スピーカユニット(６)は、その放音方向をフロントキャビネット(３)の放音孔(12)へ向けた斜め下向きの姿勢に設置される。
　又、導音ブラケット(７)は、バックキャビネット(４)側から、ディスプレイ(５)の底面とフロントキャビネット(３)の底壁部(32)との間に形成される空間を放音孔(12)へ向けて伸び、放音孔(12)と対向する位置にて開口する。 When the front cabinet (3) and the back cabinet (4) are joined and integrated in this state, as shown in FIG. 5, the speaker unit (6) has the sound emission direction of the front cabinet (3). Installed in an obliquely downward position toward the hole (12).
Further, the sound guide bracket (7) has a sound emission hole (from the back cabinet (4) side) formed in a space formed between the bottom surface of the display (5) and the bottom wall portion (32) of the front cabinet (3). It extends toward 12) and opens at a position facing the sound emission hole (12).
　従って、スピーカユニット(６)から発せられた音波は、導音ブラケット(７)を経てフロントキャビネット(３)の放音孔(12)から斜め前方へ放出されることになる。 Therefore, the sound wave emitted from the speaker unit (6) is emitted obliquely forward from the sound emitting hole (12) of the front cabinet (3) through the sound guide bracket (7).
　上記画像表示装置によれば、フロントキャビネット(３)の底壁部(32)に放音孔(12)が開設されているので、フロントキャビネット(３)のフロントパネル部(31)の外形は画像表示窓(11)よりも僅かに大きく形成すればよい。然も、スピーカユニット(６)はバックキャビネット(４)に配備されているので、ディスプレイ(５)とフロントキャビネット(３)の底壁部(32)との間のスペースは可及的に狭小化することが出来る。これによって筐体(１)の小型化が可能である。 According to the image display device, since the sound emission hole (12) is opened in the bottom wall portion (32) of the front cabinet (3), the outer shape of the front panel portion (31) of the front cabinet (3) is the image. What is necessary is just to form slightly larger than a display window (11). However, since the speaker unit (6) is arranged in the back cabinet (4), the space between the display (5) and the bottom wall (32) of the front cabinet (3) is made as small as possible. I can do it. As a result, the housing (1) can be downsized.
　又、上記画像表示装置においては、図５に示す如くフロントキャビネット(３)の底壁部(32)が僅かな仰角(約５°)を有してバックキャビネット(４)側へ低く傾斜しているので、底壁部(32)の鉛直方向に沿う高さ寸法は小さくなる。そして、該底壁部(32)に放音孔(12)が開設されているので、図１に示す様に、画像表示窓(11)を観ている視聴者にとって、放音孔(12)は殆ど見えない。 In the image display device, as shown in FIG. 5, the bottom wall portion (32) of the front cabinet (3) has a slight elevation angle (about 5 °) and is inclined downward toward the back cabinet (4). Therefore, the height dimension along the vertical direction of the bottom wall portion (32) becomes small. And since the sound emission hole (12) is opened in the bottom wall part (32), as shown in FIG. 1, the sound emission hole (12) for the viewer watching the image display window (11). Is almost invisible.
　又、スピーカユニット(６)から発せられる音波は、導音ブラケット(７)により導かれて、フロントキャビネット(３)の放音孔(12)から斜め前方へ放出され、その音波は更に視聴者に向かって前方へ進行することになるので、放音孔から下方へ音波を放出する従来の画像表示装置に比べて高い音質が得られる。 The sound wave emitted from the speaker unit (6) is guided by the sound guide bracket (7) and emitted obliquely forward from the sound emission hole (12) of the front cabinet (3). Therefore, the sound quality is higher than that of a conventional image display device that emits sound waves downward from the sound emission holes.
　更に又、バックキャビネット(４)の底壁面には、導音ブラケット(７)の音抜き孔(75)が開口しているので、スピーカユニット(６)からバックキャビネット(４)の底壁面に向かって進む音波が音抜き孔(75)を通過して外部へ放出され、底壁面で大きく反射されることがないので、音の反射による音質の低下を抑制することが出来る。 Furthermore, since the sound release hole (75) of the sound guide bracket (7) is opened on the bottom wall surface of the back cabinet (4), the speaker unit (6) faces the bottom wall surface of the back cabinet (4). Since the sound wave that travels through the sound vent hole (75) is emitted to the outside and is not largely reflected by the bottom wall surface, it is possible to suppress deterioration in sound quality due to sound reflection.
(１)　筐体
(11)　画像表示窓
(12)　放音孔
(２)　スタンド
(３)　フロントキャビネット
(31)　フロントパネル部
(32)　底壁部
(４)　バックキャビネット
(42)　底壁部
(43)　切り欠き
(５)　ディスプレイ
(６)　スピーカユニット
(７)　導音ブラケット
(71)　第１導音部
(72)　第２導音部
(75)　音抜き孔 (1) Case
(11) Image display window
(12) Sound vent
(2) Stand
(3) Front cabinet
(31) Front panel
(32) Bottom wall
(4) Back cabinet
(42) Bottom wall
(43) Notch
(5) Display
(6) Speaker unit
(7) Sound guide bracket
(71) First sound guide
(72) Second sound guide
(75) Sound release hole

Claims (3)

  1. 　フロントキャビネットとバックキャビネットを互いに接合してなる筐体の内部に、平面型のディスプレイとスピーカを配備し、フロントキャビネットには、前記ディスプレイの画像を表示するための画像表示窓が設けられると共に、前記スピーカから発せられる音波を放出するための放音孔が開設されている画像表示装置において、
    　前記フロントキャビネットは、画像表示窓を包囲するフロントパネル部と、該フロントパネル部から前記ディスプレイの下方位置をバックキャビネット側へ伸びる底壁部とを有し、該底壁部は、バックキャビネット側に低く傾斜し、該底壁部に前記放音孔が開設され、前記スピーカは、その放音方向を斜め下方に向けた姿勢でバックキャビネットに取り付けられ、該スピーカには、スピーカから放出される音波を前記放音孔へ導くための導音ブラケットが取り付けられ、該導音ブラケットは、ディスプレイとフロントキャビネットの底壁部との間に形成される空間を前記放音孔へ向けて伸び、前記放音孔と対向する位置で開口していることを特徴とする画像表示装置。     A flat display and a speaker are arranged inside a casing formed by joining the front cabinet and the back cabinet, and the front cabinet is provided with an image display window for displaying an image of the display, and In an image display device in which a sound emission hole for releasing sound waves emitted from a speaker is opened,
    The front cabinet includes a front panel portion that surrounds the image display window, and a bottom wall portion that extends from the front panel portion to a back cabinet side at a lower position of the display, and the bottom wall portion is located on the back cabinet side. The sound emitting hole is opened in the bottom wall portion, and the speaker is attached to the back cabinet in a posture in which the sound emitting direction is obliquely downward. The sound wave emitted from the speaker is transmitted to the speaker. A sound guide bracket for guiding the sound to the sound emission hole is attached, and the sound guide bracket extends toward the sound emission hole through a space formed between a display and a bottom wall portion of the front cabinet. An image display device having an opening at a position facing a sound hole.
  2. 　前記導音ブラケットは、バックキャビネットに形成された切り欠き部を塞ぐ底壁を有し、該底壁には、スピーカから該底壁に向かって進む音波を通過させる音抜き孔が開設されている請求項１に記載の画像表示装置。 The sound guide bracket has a bottom wall that closes a notch formed in the back cabinet, and the bottom wall has a sound release hole through which sound waves traveling from the speaker toward the bottom wall are passed. The image display device according to claim 1.
  3. 　前記導音ブラケットは、合成樹脂の一体成型品である請求項１又は請求項２に記載の画像表示装置。 3. The image display device according to claim 1, wherein the sound guide bracket is an integrally molded product of synthetic resin.
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