JP2022009482A - Display device, and television device - Google Patents

Display device, and television device Download PDF

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JP2022009482A
JP2022009482A JP2021174295A JP2021174295A JP2022009482A JP 2022009482 A JP2022009482 A JP 2022009482A JP 2021174295 A JP2021174295 A JP 2021174295A JP 2021174295 A JP2021174295 A JP 2021174295A JP 2022009482 A JP2022009482 A JP 2022009482A
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emitting surface
display device
sound emitting
sound
opening
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JP7245306B2 (en
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由浩 尾島
Yoshihiro Oshima
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Sharp Corp
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Sharp Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a display device and a television device, which improve sound omission in a middle-sound range and a high-sound range and enable an opening area on a front side of the display to be slim.
SOLUTION: A display device is provided with a speaker device mounted inside a cabinet and is mounted on an installation base, the speaker device having a sound emitting surface facing forward. The display device includes: a bottom opening 31 provided on a bottom portion of the cabinet positioned lower than a sound emitting surface 21 and capable of outputting sounds from a speaker device 15L toward an installation base 50; a front opening 35 having a minimum opening diameter formed smaller than a maximum opening diameter of the sound emitting surface, provided at a front portion of the cabinet opposed to a front surface of the display device and capable of outputting sounds from the speaker device toward the front surface of the display device; and an open space (for example, an open chamber 40) in which a portion between the sound emitting surface and the front opening and a portion between the sound emitting surface and the bottom opening are formed larger than the maximum opening diameter of the sound emitting surface.
SELECTED DRAWING: Figure 2
COPYRIGHT: (C)2022,JPO&INPIT

Description

本発明は、表示装置、テレビジョン装置に関し、詳細には、放音面を前方に向けたスピーカ装置をキャビネットの内側に搭載し、設置台に載置された表示装置、テレビジョン装置に関する。 The present invention relates to a display device and a television device, and more particularly to a display device and a television device in which a speaker device with a sound emitting surface facing forward is mounted inside a cabinet and mounted on an installation table.

表示装置では、スピーカ装置をディスプレイ部の左右両側に設置すると、表示装置の横幅が大きくなるという懸念がある。このため、薄型の表示装置では、スピーカ装置の放音面をディスプレイ部の後方に配置し、放音面の前方に音導管を設けた構造が知られている。例えば、特許文献１には、音導管構造を有した表示装置が開示されている。 In the display device, if the speaker device is installed on both the left and right sides of the display unit, there is a concern that the width of the display device becomes large. For this reason, in a thin display device, a structure is known in which the sound emitting surface of the speaker device is arranged behind the display unit and a sound conduit is provided in front of the sound emitting surface. For example, Patent Document 1 discloses a display device having a sound conduit structure.

特公平７－５７０３７号公報Special Fair 7-57037 Gazette

しかしながら、上記特許文献１の場合、スピーカ装置から出力された音声は、先細り形状の音導管で狭められるため、中音域や高音域の音抜けが悪くなる（こもり感が生ずるともいう）という懸念がある。 However, in the case of Patent Document 1, since the sound output from the speaker device is narrowed by the tapered sound conduit, there is a concern that the sound omission in the midrange and high range will be deteriorated (also referred to as a muffled feeling). be.

本発明は、上述のような実情に鑑みてなされたもので、中音域や高音域の音抜けを良くするとともに、表示装置の正面側の開口エリアがスリムになる表示装置、テレビジョン装置を提供することを目的とする。 The present invention has been made in view of the above circumstances, and provides a display device and a television device that improve sound omission in the midrange and high range and slim the opening area on the front side of the display device. The purpose is to do.

上記課題を解決するために、本発明の第１の技術手段は、放音面を前方に向けたスピーカ装置をキャビネットの内側に搭載し、設置台に載置された表示装置であって、前記放音面よりも下方に位置した前記キャビネットの底部に設けられ、前記スピーカ装置からの音声を前記設置台に向けて出力可能な底部開口と、最小開口径が前記放音面の最大開口径よりも小さく形成されており、前記表示装置の正面に対峙した前記キャビネットの前部に設けられ、前記スピーカ装置からの音声を前記表示装置の正面に向けて出力可能な前部開口と、前記放音面と前記前部開口との間、および、前記放音面と前記底部開口との間が前記放音面の最大開口径よりも大きく形成されている開放空間とを備えることを特徴としたものである。 In order to solve the above problems, the first technical means of the present invention is a display device in which a speaker device with a sound emitting surface facing forward is mounted inside a cabinet and mounted on an installation table. A bottom opening provided at the bottom of the cabinet located below the sound emitting surface and capable of outputting sound from the speaker device toward the installation table, and a minimum opening diameter smaller than the maximum opening diameter of the sound emitting surface. Is also formed small, and is provided at the front of the cabinet facing the front of the display device, and has a front opening capable of outputting sound from the speaker device toward the front of the display device, and the sound emission. It is characterized by having an open space formed between the surface and the front opening and between the sound emitting surface and the bottom opening larger than the maximum opening diameter of the sound emitting surface. Is.

第２の技術手段は、放音面を前方に向けたスピーカ装置をキャビネットの内側に搭載した表示装置であって、前記放音面よりも下方に位置した前記キャビネットの底部に設けられ、前記スピーカ装置からの音声を下方に向けて出力可能な底部開口と、最小開口径が前記放音面の最大開口径よりも小さく形成されており、前記表示装置の正面に対峙した前記キャビネットの前部に設けられ、前記スピーカ装置からの音声を前記表示装置の正面に向けて出力可能な前部開口と、前記放音面と前記前部開口との間、および、前記放音面と前記底部開口との間が前記放音面の最大開口径よりも大きく形成されている開放空間とを備えることを特徴としたものである。 The second technical means is a display device in which a speaker device having a sound emitting surface facing forward is mounted inside the cabinet, and is provided at the bottom of the cabinet located below the sound emitting surface, and the speaker is provided. A bottom opening capable of outputting sound from the device downward and a minimum opening diameter formed to be smaller than the maximum opening diameter of the sound emitting surface are formed in the front part of the cabinet facing the front of the display device. A front opening that is provided and capable of outputting sound from the speaker device toward the front of the display device, between the sound emitting surface and the front opening, and between the sound emitting surface and the bottom opening. It is characterized by having an open space formed between the spaces larger than the maximum opening diameter of the sound emitting surface.

第３の技術手段は、第１または第２の技術手段において、前記放音面を、前記表示装置の正面に対して前記設置台に向けて傾斜させた前記スピーカ装置を前記キャビネットの内側に搭載したことを特徴としたものである。 In the first or second technical means, the third technical means mounts the speaker device whose sound emitting surface is inclined toward the installation table with respect to the front surface of the display device inside the cabinet. It is characterized by what was done.

第４の技術手段は、第１から第３のいずれかの技術手段において、前記スピーカ装置が、同じスピーカＢＯＸに内蔵されたフルレンジスピーカーとツイータを有することを特徴としたものである。 The fourth technical means is characterized in that, in any one of the first to third technical means, the speaker device has a full-range speaker and a tweeter built in the same speaker BOX.

第５の技術手段は、第１から第４のいずれかの技術手段を備えたテレビジョン装置であることを特徴としたものである。 The fifth technical means is characterized in that it is a television apparatus provided with any one of the first to fourth technical means.

本発明によれば、先細り形状の音導管を設けず、放音面の前方に狭い空間が生じないので、音導管を設けた場合に比べて、中音域や高音域の音抜けを良くする（こもり感を低減し明瞭度を向上させる）ことができる。また、底部開口を有することにより、前部開口による開口エリアをスリムにできることから、デザイン上の制約を受けにくい表示装置を提供することができる。 According to the present invention, since the tapered sound conduit is not provided and a narrow space is not created in front of the sound emitting surface, the sound omission in the midrange and the high range is improved as compared with the case where the sound conduit is provided ( It can reduce the feeling of muffledness and improve the clarity). Further, by having the bottom opening, the opening area due to the front opening can be slimmed down, so that it is possible to provide a display device that is less susceptible to design restrictions.

本発明の第１実施形態による表示装置の正面図である。It is a front view of the display device by 1st Embodiment of this invention. 図１のII-II線矢視断面図である。FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 底部材の内部を表示装置の後方から見た図である。It is the figure which looked at the inside of the bottom member from the rear of the display device. 第１実施形態における音圧レベルの測定結果を説明するための図である。It is a figure for demonstrating the measurement result of the sound pressure level in 1st Embodiment.

（第１実施形態）
図１は、本発明の第１実施形態による表示装置の正面図である。表示装置１（例えば薄型のテレビジョン装置）は、矩形状のディスプレイ部１０を有する。ディスプレイ部１０は、例えば、液晶層やガラス基板などを有した矩形のＬＣＤ（Liquid Crystal Display）パネルや、例えばＬＥＤを導光板の側方に並べたエッジライト型で構成されたバックライト等を備えている。 (First Embodiment)
FIG. 1 is a front view of a display device according to the first embodiment of the present invention. The display device 1 (for example, a thin television device) has a rectangular display unit 10. The display unit 10 includes, for example, a rectangular LCD (Liquid Crystal Display) panel having a liquid crystal layer, a glass substrate, or the like, or, for example, a backlight composed of an edge light type in which LEDs are arranged side by side of a light guide plate. ing.

ディスプレイ部１０は前方（図示のＹ軸の正方向）を残して例えば樹脂製のキャビネット１１で覆われている。詳しくは、キャビネット１１は、前キャビ部１１ａと、底キャビ部１１ｃと、ディスプレイ部１０の背面側に位置して、図２で説明する後キャビ部１１ｂとからなる。前キャビ部１１ａは、例えば、枠形状で形成され、ＬＣＤパネルの周囲に設けられる。 The display unit 10 is covered with, for example, a resin cabinet 11 leaving the front side (positive direction of the Y-axis in the figure). Specifically, the cabinet 11 includes a front cabinet portion 11a, a bottom cabinet portion 11c, and a rear cabinet portion 11b located on the back side of the display unit 10 and described with reference to FIG. The front cavity portion 11a is formed in a frame shape, for example, and is provided around the LCD panel.

底キャビ部１１ｃは、例えば上方に開口を有したカップ形状であり、図示のＸ方向に沿って細長く形成されており、前キャビ部１１ａや後キャビ部１１ｂの下側に設けられている。
スタンド１２は、例えば底キャビ部１１ｃの中央位置に取り付けられ、表示装置１は、スタンド１２を介して設置台５０に載置される。 The bottom cavity portion 11c has, for example, a cup shape having an opening at the upper side, is elongated along the X direction in the drawing, and is provided below the front cavity portion 11a and the rear cavity portion 11b.
The stand 12 is attached to, for example, the central position of the bottom cavity portion 11c, and the display device 1 is placed on the installation table 50 via the stand 12.

キャビネット１１の内側には、放音面を斜め前下方に向けたスピーカ装置１５が設置され、スピーカ装置１５からは、可聴帯域内（例えば２０Ｈｚ～２０ｋＨｚ程度）の音声を出力できる。
表示装置１の正面から見てスタンド１２の左側には、スピーカ部１５Ｌが設置され、スタンド１２の右側には、スピーカ部１５Ｒが設置されている。 A speaker device 15 whose sound emitting surface is directed diagonally forward and downward is installed inside the cabinet 11, and the speaker device 15 can output sound within the audible band (for example, about 20 Hz to 20 kHz).
The speaker unit 15L is installed on the left side of the stand 12 when viewed from the front of the display device 1, and the speaker unit 15R is installed on the right side of the stand 12.

図２は、図１のII-II線矢視断面図である。また、図３は、底部材の内部を表示装置の後方から見た図である。なお、スピーカ部１５Ｌとスピーカ部１５Ｒは同じ構造であるので、スピーカ部１５Ｌについては図２で説明し、スピーカ部１５Ｒの詳細な説明は省略する。 FIG. 2 is a cross-sectional view taken along the line II-II of FIG. Further, FIG. 3 is a view of the inside of the bottom member as viewed from the rear of the display device. Since the speaker unit 15L and the speaker unit 15R have the same structure, the speaker unit 15L will be described with reference to FIG. 2, and a detailed description of the speaker unit 15R will be omitted.

図２に示すように、底キャビ部１１ｃは、細長の開口を上方（図示のＺ軸の正方向）に向けて配置し、この開口の前方（図示のＹ軸の正方向）で、例えばディスプレイ部１０の背面を支持するとともに、前キャビ部１１ａの下面に当接している。
後キャビ部１１ｂは、ディスプレイ部１０の背面側を覆って下方に向けて延びており、底キャビ部１１ｃは、その開口の後方（図示のＹ軸の負方向）で、例えば後キャビ部１１ｂの下端に係合している。 As shown in FIG. 2, the bottom cavity portion 11c has an elongated opening facing upward (positive direction of the Z axis shown in the figure), and in front of the opening (positive direction of the Y axis shown in the figure), for example, a display. It supports the back surface of the portion 10 and is in contact with the lower surface of the front cavity portion 11a.
The rear cavity portion 11b covers the back surface side of the display portion 10 and extends downward, and the bottom cavity portion 11c is behind the opening (in the negative direction of the Y axis in the figure), for example, the rear cavity portion 11b. Engages at the bottom edge.

スピーカ部１５Ｌは、ディスプレイ部１０の後方であって、底キャビ部１１ｃの内部に配置されている。
底キャビ部１１ｃの内部には、例えば横長（図示のＸ方向に長い）のスピーカＢＯＸ２０が設けられている。スピーカＢＯＸ２０には、表示装置１の正面（図示のＹ軸の正方向）に対して設置台５０に向けて傾斜（斜め前下方に向けて形成）された放音面２１が設けられている。 The speaker unit 15L is located behind the display unit 10 and inside the bottom cavity unit 11c.
Inside the bottom cavity portion 11c, for example, a horizontally long speaker BOX 20 (long in the X direction in the figure) is provided. The speaker BOX 20 is provided with a sound emitting surface 21 inclined (formed diagonally forward and downward) toward the installation table 50 with respect to the front surface of the display device 1 (positive direction of the Y axis in the figure).

放音面２１は、振動板２３の縦幅が３５ｍｍ、振動板２３の横幅が７８ｍｍで形成されている。
振動板２３は斜め前下方に向けて配置され、振動板２３のエッジは、放音面２１の近傍でスピーカＢＯＸ２０に支持されている。なお、放音面２１の奥（図示のＺ軸の正方向）には、ボイスコイルやマグネットなど（いずれも図示省略）が備えられている。２２ａは取付用ゴムブッシュであり、スピーカ部１５Ｌの上方に設けられる。また、２２ｂはバスレフダクト出口であり、スピーカＢＯＸ２０の後方に形成されている。 The sound emitting surface 21 is formed with a vertical width of the diaphragm 23 of 35 mm and a horizontal width of the diaphragm 23 of 78 mm.
The diaphragm 23 is arranged diagonally forward and downward, and the edge of the diaphragm 23 is supported by the speaker BOX 20 in the vicinity of the sound emitting surface 21. A voice coil, a magnet, and the like (both are not shown) are provided behind the sound emitting surface 21 (in the positive direction of the Z axis shown in the figure). Reference numeral 22a is a rubber bush for mounting, which is provided above the speaker portion 15L. Further, 22b is a bass reflex duct outlet, which is formed behind the speaker BOX 20.

本実施形態の底キャビ部１１ｃは、前部開口３５、底部材３０を有している。
前部開口３５は、前キャビ部１１ａの下側で、表示装置１の正面に対峙し、かつ、放音面２１に対峙した底キャビ部１１ｃの前面に形成されており、図示のＹ軸方向で底キャビ部１１ｃを貫通して設けられている。
この底キャビ部１１ｃの前面が本発明のキャビネットの前部に相当する。なお、前キャビ部１１ａと底キャビ部１１ｃを一体形成し、前キャビ部１１ａの底部分に前部開口３５を設けてもよい。この場合には、前キャビ部１１ａが本発明のキャビネットの前部に相当する。 The bottom cavity portion 11c of the present embodiment has a front opening 35 and a bottom member 30.
The front opening 35 is formed on the lower side of the front cabinet portion 11a, facing the front surface of the display device 1 and facing the sound emitting surface 21 on the front surface of the bottom cabinet portion 11c, and is formed in the Y-axis direction in the drawing. It is provided so as to penetrate the bottom cavity portion 11c.
The front surface of the bottom cavity portion 11c corresponds to the front portion of the cabinet of the present invention. The front cavity portion 11a and the bottom cavity portion 11c may be integrally formed, and the front opening 35 may be provided at the bottom portion of the front cavity portion 11a. In this case, the front cabinet portion 11a corresponds to the front portion of the cabinet of the present invention.

図３に示すように、前部開口３５は、例えば横長（図示のＸ方向に長い）の長方形状に形成されている。この図３は、放音面２１から前部開口３５や底部開口３１を見た図である。前部開口３５は、縦（図示のＺ方向）が１３ｍｍ、横（図示のＸ方向）が９５ｍｍで形成され、前部開口３５の内側にはリブが格子状に設けられている。 As shown in FIG. 3, the front opening 35 is formed, for example, in a horizontally long rectangular shape (long in the X direction in the drawing). FIG. 3 is a view of the front opening 35 and the bottom opening 31 seen from the sound emitting surface 21. The front opening 35 is formed with a length (Z direction in the figure) of 13 mm and a width (X direction in the figure) of 95 mm, and ribs are provided in a grid pattern inside the front opening 35.

図２に示すように、底部材３０は、スピーカ部１５Ｌの放音面２１よりも下方に位置した底キャビ部１１ｃの底面に配置されている。底キャビ部１１ｃの底面が本発明のキャビネットの底部に相当する。
なお、前キャビ部１１ａと底キャビ部１１ｃを一体形成（あるいは後キャビ部１１ｂと底キャビ部１１ｃを一体形成）し、前キャビ部１１ａの底部分（あるいは後キャビ部１１ｂの底部分）に底部材３０を設けてもよい。この場合には、前キャビ部１１ａ（あるいは後キャビ部１１ｂ）が本発明のキャビネットの底部に相当する。 As shown in FIG. 2, the bottom member 30 is arranged on the bottom surface of the bottom cavity portion 11c located below the sound emitting surface 21 of the speaker portion 15L. The bottom surface of the bottom cavity portion 11c corresponds to the bottom portion of the cabinet of the present invention.
The front cavity portion 11a and the bottom cavity portion 11c are integrally formed (or the rear cavity portion 11b and the bottom cavity portion 11c are integrally formed), and the bottom portion is formed on the bottom portion of the front cavity portion 11a (or the bottom portion of the rear cavity portion 11b). The material 30 may be provided. In this case, the front cabinet portion 11a (or the rear cabinet portion 11b) corresponds to the bottom of the cabinet of the present invention.

底部材３０は、底部開口３１，３２を有している。底部開口３１は、前部開口３５と放音面２１との間に位置し、図示のＺ軸方向で底キャビ部１１ｃを貫通して複数設けられており、例えば網目状に形成されている。なお、底部開口３２は、スピーカＢＯＸ２０の下方（放音面２１よりも後方）に位置し、図示のＺ軸方向で底キャビ部１１ｃを貫通して複数設けられている。 The bottom member 30 has bottom openings 31 and 32. A plurality of bottom openings 31 are located between the front opening 35 and the sound emitting surface 21, and are provided so as to penetrate the bottom cavity 11c in the Z-axis direction shown in the drawing, and are formed in a mesh shape, for example. A plurality of bottom openings 32 are provided below the speaker BOX 20 (behind the sound emitting surface 21) and penetrate the bottom cavity 11c in the Z-axis direction shown in the drawing.

本実施形態の表示装置１では、上述のように、前部開口３５の最小開口径（１３ｍｍ）は放音面２１の最大開口径（３５ｍｍ）よりも小さく形成されているが、放音面２１と前部開口３５との間に音導管を設けないものである。つまり、本実施形態の表示装置１では、図２に示すように、放音面２１と前部開口３５との間、および、放音面２１と底部開口３１との間に、放音面２１の最大開口径よりも大きく形成された開放室４０を有している。なお、開放室４０が本発明の開放空間に相当する。 In the display device 1 of the present embodiment, as described above, the minimum opening diameter (13 mm) of the front opening 35 is formed to be smaller than the maximum opening diameter (35 mm) of the sound emitting surface 21, but the sound emitting surface 21 is formed. No sound conduit is provided between the front opening 35 and the front opening 35. That is, in the display device 1 of the present embodiment, as shown in FIG. 2, the sound emitting surface 21 is located between the sound emitting surface 21 and the front opening 35, and between the sound emitting surface 21 and the bottom opening 31. It has an open chamber 40 formed to be larger than the maximum opening diameter of the above. The open chamber 40 corresponds to the open space of the present invention.

第１実施形態によれば、先細り形状の音導管を設けず、放音面２１の前方に狭い空間が生じないので、音導管を設けた場合に比べて、中音域や高音域の音抜けを良くする（こもり感を低減し明瞭度を向上させる）ことができる。また、底部開口３１を有することにより、前部開口３５による開口エリアをスリムにできることから、デザイン上の制約を受けにくい表示装置１を提供することができる。 According to the first embodiment, since the tapered sound conduit is not provided and a narrow space is not created in front of the sound emitting surface 21, sound omission in the midrange and high range can be achieved as compared with the case where the sound conduit is provided. It can be improved (reducing muffled feeling and improving intelligibility). Further, since the opening area due to the front opening 35 can be made slim by having the bottom opening 31, it is possible to provide the display device 1 which is less susceptible to design restrictions.

次に、上記の底キャビ部１１ｃを有した構造（第１実施形態）と、以下の比較例１に対し、スピーカ部１５Ｌのみを駆動した場合について、マイクロフォンを用いて音圧特性を測定した。マイクロフォンは図１に示したスピーカ部１５Ｌの前方に配置され、スピーカ部１５Ｌからマイクロフォンまでの距離は１ｍである。なお、スピーカ部１５Ｒのみを駆動させた場合の音圧特性は、スピーカ部１５Ｌのみを駆動させた場合のそれと基本的に同じであるため、スピーカ部１５Ｒのみを駆動させた場合は省略する。 Next, with respect to the structure having the bottom cavity portion 11c (first embodiment) and the following Comparative Example 1, the sound pressure characteristics were measured using a microphone in the case where only the speaker portion 15L was driven. The microphone is arranged in front of the speaker unit 15L shown in FIG. 1, and the distance from the speaker unit 15L to the microphone is 1 m. Since the sound pressure characteristics when only the speaker unit 15R is driven are basically the same as those when only the speaker unit 15L is driven, the case where only the speaker unit 15R is driven is omitted.

図４は、第１実施形態と比較例１に対する音圧レベルの測定結果を説明するための図である。
まず、比較例１は、第１実施形態と同様に音導管を設けておらず、前部開口３５を有しているが、底部開口３１を有していない構造である。
比較例１の場合、スピーカ部１５Ｌのみを駆動させると、図４に破線で示すように、２ｋＨｚ付近の帯域（中音域と高音域との境界付近）で音圧レベルが減少していた。 FIG. 4 is a diagram for explaining the measurement results of the sound pressure level with respect to the first embodiment and the comparative example 1.
First, Comparative Example 1 has a structure in which the sound conduit is not provided and the front opening 35 is provided, but the bottom opening 31 is not provided, as in the first embodiment.
In the case of Comparative Example 1, when only the speaker unit 15L was driven, the sound pressure level decreased in the band near 2 kHz (near the boundary between the midrange and the high range) as shown by the broken line in FIG.

これに対し、第１実施形態の場合には、図４に実線で示すように、中音域と高音域との境界付近でも音圧レベルが減少せず、音圧特性を改善できていた。
第１実施形態のように、放音面２１が斜め前方下向きの場合であっても、前部開口３５を設ければ、スピーカ装置１５からの音声は、前部開口３５から表示装置１の正面に出力されるため、表示装置１の正面での音圧感の減少を解消（音像位置が明らかになって定位感を確保）できる。そして、前部開口３５と放音面２１との間に、底部開口３１を設ければ、スピーカ装置１５からの音声は、底部開口３１から設置台５０に出力されるため、前述の２ｋＨｚ付近の帯域の不足を補う（こもり感を低減し明瞭度を向上させる）ことができる。 On the other hand, in the case of the first embodiment, as shown by the solid line in FIG. 4, the sound pressure level did not decrease even in the vicinity of the boundary between the midrange and the high range, and the sound pressure characteristics could be improved.
Even when the sound emitting surface 21 faces diagonally forward and downward as in the first embodiment, if the front opening 35 is provided, the sound from the speaker device 15 can be heard from the front opening 35 to the front of the display device 1. Therefore, it is possible to eliminate the decrease in the feeling of sound pressure in front of the display device 1 (the position of the sound image becomes clear and the feeling of localization is ensured). If the bottom opening 31 is provided between the front opening 35 and the sound emitting surface 21, the sound from the speaker device 15 is output from the bottom opening 31 to the installation table 50, so that the sound is output from the bottom opening 31 to the installation table 50. It is possible to make up for the lack of band (reduce the feeling of muffledness and improve the clarity).

なお、図示は省略するが、前部開口３５を有しているが、底部開口３１、底部開口３２のいずれも有していない構造について、スピーカ部１５Ｌのみを駆動させたところ、比較例１とほぼ同じ結果が得られ、２ｋＨｚ付近の帯域で音圧レベルが減少していた。底部開口３２は放音面２１よりも後方に位置しているため、底部開口３２による音圧特性への影響が少ないと考えられる。 Although not shown, a structure having a front opening 35 but not having either a bottom opening 31 or a bottom opening 32 was driven only by the speaker unit 15L, as compared with Comparative Example 1. Almost the same result was obtained, and the sound pressure level decreased in the band around 2 kHz. Since the bottom opening 32 is located behind the sound emitting surface 21, it is considered that the bottom opening 32 has little effect on the sound pressure characteristics.

（第２実施形態）
第１実施形態ではスピーカ装置の放音面２１が斜め前下方を向いた例を挙げて説明した。しかし、本発明は、この例に限定されるものではなく、スピーカ装置の放音面２１が表示装置１の正面（前方）を向いた構造にも適用可能である。この場合にも、スピーカ装置１５からの音声は、前部開口３５から表示装置１の正面に出力され、表示装置１の正面での音圧感の減少を解消できる。また、スピーカ装置１５からの音声は、底部開口３１から設置台５０に出力され、中音域から高音域にかけての音圧不足を補うことができる。 (Second Embodiment)
In the first embodiment, an example in which the sound emitting surface 21 of the speaker device faces diagonally forward and downward has been described. However, the present invention is not limited to this example, and can be applied to a structure in which the sound emitting surface 21 of the speaker device faces the front (front) of the display device 1. Also in this case, the sound from the speaker device 15 is output from the front opening 35 to the front of the display device 1, and the decrease in the sound pressure feeling on the front of the display device 1 can be eliminated. Further, the sound from the speaker device 15 is output from the bottom opening 31 to the installation table 50, and the lack of sound pressure from the midrange to the high range can be compensated.

（第３実施形態）
さらに、図示は省略するが、表示装置１の正面から見てスピーカ部１５Ｌの横やスピーカ部１５Ｒの横にツイータをそれぞれ設置してもよい。各ツイータの放音面は、表示装置の正面に対して設置台に向けて傾斜させてもよく、あるいは表示装置の正面（前方）に向けてもよい。
また、このツイータも内蔵したＢＯＸ構造であってもよい。具体的には、第１，２実施形態では、１台のスピーカ部（フルレンジスピーカー）をスピーカＢＯＸ２０に収容した例で説明しているが、フルレンジスピーカーとツイータを同じスピーカＢＯＸに収容することも可能である。 (Third Embodiment)
Further, although not shown, tweeters may be installed next to the speaker unit 15L and next to the speaker unit 15R when viewed from the front of the display device 1. The sound emitting surface of each tweeter may be inclined toward the installation table with respect to the front of the display device, or may be directed to the front (front) of the display device.
Further, this tweeter may also have a built-in BOX structure. Specifically, in the first and second embodiments, one speaker unit (full-range speaker) is housed in the speaker box 20, but the full-range speaker and the tweeter can be housed in the same speaker box. Is.

ところで、上記の第１～３実施形態では、スタンドを有して設置台に載置される例を挙げて説明したが、本発明は、この例に限定されるものではなく、例えば壁掛け構造、詳しくは、スタンドを有しないで壁面に設置される構造にも適用可能である。 By the way, in the above-mentioned first to third embodiments, an example in which a stand is held and mounted on an installation table has been described, but the present invention is not limited to this example, and for example, a wall-mounted structure. Specifically, it can be applied to a structure installed on a wall surface without having a stand.

１…表示装置、１０…ディスプレイ部、１１…キャビネット、１１ａ…前キャビ部、１１ｂ…後キャビ部、１１ｃ…底キャビ部、１２…スタンド、１５…スピーカ装置、１５Ｌ，１５Ｒ…スピーカ部、２０…スピーカＢＯＸ、２１…放音面、２２ａ…取付用ゴムブッシュ、２２ｂ…バスレフダクト出口、２３…振動板、３０…底部材、３１，３２…底部開口、３５…前部開口、４０…開放室、５０…設置台 1 ... Display device, 10 ... Display unit, 11 ... Cabinet, 11a ... Front cabinet unit, 11b ... Rear cabinet unit, 11c ... Bottom cabinet unit, 12 ... Stand, 15 ... Speaker device, 15L, 15R ... Speaker unit, 20 ... Speaker BOX, 21 ... Sound emitting surface, 22a ... Mounting rubber bush, 22b ... Bass reflex duct outlet, 23 ... Diaphragm, 30 ... Bottom member, 31, 32 ... Bottom opening, 35 ... Front opening, 40 ... Open chamber, 50 ... Installation stand

Claims (5)

放音面を前方に向けたスピーカ装置をキャビネットの内側に搭載し、設置台に載置された表示装置であって、
前記放音面よりも下方に位置した前記キャビネットの底部に設けられ、前記スピーカ装置からの音声を前記設置台に向けて出力可能な底部開口と、
最小開口径が前記放音面の最大開口径よりも小さく形成されており、前記表示装置の正面に対峙した前記キャビネットの前部に設けられ、前記スピーカ装置からの音声を前記表示装置の正面に向けて出力可能な前部開口と、
前記放音面と前記前部開口との間、および、前記放音面と前記底部開口との間が前記放音面の最大開口径よりも大きく形成されている開放空間と
を備えることを特徴とする表示装置。 It is a display device that has a speaker device with the sound emitting surface facing forward mounted inside the cabinet and is mounted on the installation stand.
A bottom opening provided at the bottom of the cabinet located below the sound emitting surface and capable of outputting sound from the speaker device toward the installation table.
The minimum opening diameter is formed to be smaller than the maximum opening diameter of the sound emitting surface, and is provided in the front part of the cabinet facing the front of the display device, and the sound from the speaker device is sent to the front of the display device. With a front opening that can be output toward
It is characterized by having an open space formed between the sound emitting surface and the front opening, and between the sound emitting surface and the bottom opening, which is larger than the maximum opening diameter of the sound emitting surface. Display device. 放音面を前方に向けたスピーカ装置をキャビネットの内側に搭載した表示装置であって、
前記放音面よりも下方に位置した前記キャビネットの底部に設けられ、前記スピーカ装置からの音声を下方に向けて出力可能な底部開口と、
最小開口径が前記放音面の最大開口径よりも小さく形成されており、前記表示装置の正面に対峙した前記キャビネットの前部に設けられ、前記スピーカ装置からの音声を前記表示装置の正面に向けて出力可能な前部開口と、
前記放音面と前記前部開口との間、および、前記放音面と前記底部開口との間が前記放音面の最大開口径よりも大きく形成されている開放空間と
を備えることを特徴とする表示装置。 It is a display device equipped with a speaker device with the sound emitting surface facing forward inside the cabinet.
A bottom opening provided at the bottom of the cabinet located below the sound emitting surface and capable of outputting sound from the speaker device downward.
The minimum opening diameter is formed to be smaller than the maximum opening diameter of the sound emitting surface, and is provided in the front part of the cabinet facing the front of the display device, and the sound from the speaker device is sent to the front of the display device. With a front opening that can be output toward
It is characterized by having an open space formed between the sound emitting surface and the front opening, and between the sound emitting surface and the bottom opening, which is larger than the maximum opening diameter of the sound emitting surface. Display device. 前記放音面を、前記表示装置の正面に対して前記設置台に向けて傾斜させた前記スピーカ装置を前記キャビネットの内側に搭載したことを特徴とする請求項１または２に記載の表示装置。 The display device according to claim 1 or 2, wherein the speaker device having the sound emitting surface tilted toward the installation table with respect to the front surface of the display device is mounted inside the cabinet. 請求項１から３のいずれか一項に記載の表示装置であって、
前記スピーカ装置が、同じスピーカＢＯＸに内蔵されたフルレンジスピーカーとツイータを有することを特徴とする表示装置。 The display device according to any one of claims 1 to 3.
A display device, wherein the speaker device has a full-range speaker and a tweeter built in the same speaker BOX. 請求項１から４のいずれか一項に記載の表示装置を備えたテレビジョン装置。 A television device provided with the display device according to any one of claims 1 to 4.
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JP2005311930A (en) * 2004-04-26 2005-11-04 Matsushita Electric Ind Co Ltd Television receiver
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JP2015060112A (en) * 2013-09-19 2015-03-30 カシオ計算機株式会社 Electronic keyboard musical instrument

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0898113A (en) * 1994-09-26 1996-04-12 Funai Electric Co Ltd Acoustic device
JPH09219896A (en) * 1996-02-14 1997-08-19 Matsushita Electric Ind Co Ltd Speaker device
JP2005311930A (en) * 2004-04-26 2005-11-04 Matsushita Electric Ind Co Ltd Television receiver
JP2006237910A (en) * 2005-02-24 2006-09-07 Sony Corp Electronic apparatus
JP2006345292A (en) * 2005-06-09 2006-12-21 Toshiba Corp Speaker apparatus, acoustic output method thereof, and video display apparatus
JP2015060112A (en) * 2013-09-19 2015-03-30 カシオ計算機株式会社 Electronic keyboard musical instrument

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