JP3473279B2 - Speaker device - Google Patents
Speaker deviceInfo
- Publication number
- JP3473279B2 JP3473279B2 JP18847396A JP18847396A JP3473279B2 JP 3473279 B2 JP3473279 B2 JP 3473279B2 JP 18847396 A JP18847396 A JP 18847396A JP 18847396 A JP18847396 A JP 18847396A JP 3473279 B2 JP3473279 B2 JP 3473279B2
- Authority
- JP
- Japan
- Prior art keywords
- speaker
- guide rib
- sound
- reflected
- guide ribs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、テレビジョン受像
機等におけるスピーカ装置に関するものである。
【０００２】
【従来の技術】従来、テレビジョン受像機の筺体にスピ
ーカを直接ビスにより取り付ける場合、スピーカを筺体
に取り付けるビスの長さに合わせたボスを筺体外部に突
出させないようにするためには、図３のバッフル構造分
解斜視図に示すように、筺体１のバッフル板内面２に、
スピーカを固定するビスの長さに合わせた長さのボス３
を突出させ、そのボス３の先端にスピーカ（図示せず）
をビス（図示せず）で固定するものであり、その場合、
スピーカをボス３の先端に取り付けることになり、筺体
１のバッフル板内面２の開口部４とスピーカの放音口と
の間に隙間ができるため、ボス３の長さに相当するスピ
ーカガイドリブ５を筺体１のバッフル板内面２の開口部
４とスピーカの放音口との間に円筒状に設け、スピーカ
の放音口から出る音を筺体１のバッフル板内面２の開口
部４にガイドするものである。なお６はバッフル板内面
２の開口部４に設けられた金属製あるいは成型樹脂製の
スピーカグリルである（特開昭６４−８９１号公報参
照）。
【０００３】
【発明が解決しようとする課題】しかしながら、上記従
来のスピーカ装置においては、スピーカガイドリブ５は
スピーカを取り付けた状態で密閉されたドームを形成し
て、音響出力を伝送することになり、またバッフル板内
面２の開口部４に設けられた金属製あるいは成型樹脂製
のスピーカグリル６は剛体であるためその面でスピーカ
の音響出力が反射し、前記ドーム状のスピーカガイドリ
ブ５により反射した音と共振することになり、結局、ス
ピーカガイドリブ５の長さにより管共振が生じ、ドーム
内で音響が減衰し、スピーカ単体の持つ本来の周波数特
性を著しく変化させていた。
【０００４】本発明は、上記従来のスピーカ装置におけ
る問題点を解決するものであり、スピーカガイドリブに
よる共振の少ないスピーカ装置を提供することを目的と
する。
【０００５】
【課題を解決するための手段】前記課題を解決するため
に、本発明のスピーカ装置は、筺体のバッフル板内面の
開口部とスピーカの放音口との間に設けたスピーカガイ
ドリブに複数の貫通孔を設けたり、また、そのスピーカ
ガイドリブ内に縦横に仕切る補助スピーカガイドリブを
設けたものであり、その貫通孔および補助スピーカガイ
ドリブの存在により、スピーカガイドリブによる管共振
そのものを発生しにくくし、スピーカガイドリブにより
周波数特性が大幅に変化することがなく、安定した音響
周波数特性が得られるものである。
【０００６】
【発明の実施の形態】本発明のスピーカ装置は、筐体の
バッフル板内面の開口部とスピーカの放音口との間に設
けられたスピーカガイドリブに複数の貫通孔を設けると
ともに、前記スピーカガイドリブ内に縦横に仕切る補助
スピーカガイドリブを前記スピーカガイドリブと一体に
配設したことを特徴とするスピーカ装置であり、スピー
カガイドリブに設けた複数の貫通孔により、スピーカか
ら発する音響出力のスピーカガイドリブによる反射音を
できるだけ少なくすることにより、バッフル板内面の開
口部にスピーカグリルを設けたことにより形成された空
間内において、スピーカから発する音響出力とスピーカ
ガイドリブによる反射音との管共振が発生しても、スピ
ーカから発する音響出力とスピーカグリルからの反射音
との管共振を抑えることができるとともに、前記補助ス
ピーカガイドリブにより発生する新たな反射音で、前記
スピーカガイドリブによる反射音を打ち消して、スピー
カガイドリブの反射音とスピーカから発する音響出力と
の共振の発生を抑えることができるようにしたものであ
る。
【０００７】
【０００８】以下、本発明の実施の形態について、図面
を用いて説明する。
（実施の形態１）図１は本発明のスピーカ装置の実施の
形態１におけるバッフル構造分解斜視図であり、従来例
を示す図３と異なるところは、スピーカガイドリブ５に
スリット状の複数の貫通孔７を設けた点だけであり、そ
の他の点は変わりがないので、図３に示した部分と同じ
部分には同じ符号を付し、説明は省略する。
【０００９】上記構造のスピーカ装置においては、スピ
ーカガイドリブ５に設けたスリット状の複数の貫通孔７
により、スピーカガイドリブ５からの反射音を少なく
し、スピーカグリル等からの反射音との間で共振が起こ
ることのないようにしている。
【００１０】（実施の形態２）図２は本発明のスピーカ
装置の実施の形態２におけるバッフル構造分解斜視図で
あり、実施の形態１を示す図１と異なるところは、スピ
ーカガイドリブ５内に、スピーカガイドリブ５の縦方向
の長さに相当する音波の波長λ1（数百Ｈｚ）における
共振をなくするために略λ1／４の間隔にした補助スピ
ーカガイドリブ８を縦横に仕切るように設けた点だけで
あり、その他の点は変わりがないので、図１に示した部
分と同じ部分には同じ符号を付し、説明は省略する。
【００１１】上記構造のスピーカ装置においては、スピ
ーカガイドリブ５内に縦横に仕切るように設けた補助ス
ピーカガイドリブ８が新たに反射音を生じ、その反射音
とスピーカガイドリブ５による反射音の位相が逆にな
り、その反射音間での共振をなくしている。
【００１２】なお、本実施の形態２では、スピーカガイ
ドリブ５の縦方向の長さに相当する音波の波長λ1（数
百Ｈｚ）における共振をなくするようにしているが、制
御したい周波数の１波長分もしくは半波長分に合わせた
補助スピーカガイドリブの配置によりスピーカガイドリ
ブにより生じた共振を減衰させることができ、例えば、
スピーカガイドリブ５の横方向の長さに相当する音波の
波長λ2における共振をなくすることも、共振音の周波
数が異なるだけで縦方向と同様に共振をなくすることが
できる。以上のように、補助スピーカガイドリブ８を配
置する形状，位置はスピーカガイドリブ５の形状，寸法
により決まるものである。
【００１３】
【発明の効果】以上のように、本発明のスピーカ装置に
よれば、スピーカガイドリブにより生じる共振を減少す
ることで、本来のスピーカ特性に近い音を再現すること
ができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker device for a television receiver or the like. 2. Description of the Related Art Conventionally, when a speaker is directly mounted on a housing of a television receiver with screws, it is necessary to prevent a boss corresponding to the length of the screw for mounting the speaker from the housing from protruding outside the housing. As shown in an exploded perspective view of the baffle structure in FIG.
Boss 3 of the length corresponding to the length of the screw fixing the speaker
At the end of the boss 3 (not shown).
Is fixed with screws (not shown), in which case,
Since the speaker is attached to the tip of the boss 3 and a gap is formed between the opening 4 of the inner surface 2 of the baffle plate of the housing 1 and the sound emission port of the speaker, the speaker guide rib 5 corresponding to the length of the boss 3 is provided. One provided in a cylindrical shape between the opening 4 of the inner surface 2 of the baffle plate of the housing 1 and the sound emission opening of the speaker, and guiding the sound emitted from the sound emission opening of the speaker to the opening 4 of the inner surface 2 of the baffle plate of the housing 1. It is. Reference numeral 6 denotes a speaker grill made of metal or molded resin provided in the opening 4 of the inner surface 2 of the baffle plate (see Japanese Patent Application Laid-Open No. 64-891). However, in the above-mentioned conventional speaker device, the speaker guide rib 5 forms a hermetically sealed dome with the speaker attached, and transmits sound output. Further, since the speaker grill 6 made of metal or molded resin provided in the opening 4 of the inner surface 2 of the baffle plate is a rigid body, the acoustic output of the speaker is reflected on its surface, and the sound reflected by the dome-shaped speaker guide rib 5 is reflected. As a result, tube resonance occurs due to the length of the speaker guide rib 5, sound is attenuated in the dome, and the original frequency characteristic of the speaker alone is significantly changed. An object of the present invention is to solve the above-mentioned problems in the conventional speaker device, and an object of the present invention is to provide a speaker device in which resonance by a speaker guide rib is small. In order to solve the above-mentioned problems, a speaker device according to the present invention includes a speaker guide rib provided between an opening of an inner surface of a baffle plate of a housing and a sound emission opening of the speaker. A plurality of through holes are provided, and auxiliary speaker guide ribs for partitioning the speaker guide ribs vertically and horizontally are provided in the speaker guide ribs. Due to the presence of the through holes and the auxiliary speaker guide ribs, tube resonance by the speaker guide ribs is hardly generated. In addition, the frequency characteristics are not largely changed by the speaker guide ribs, and stable acoustic frequency characteristics can be obtained. [0006] the speaker apparatus of the present invention DETAILED DESCRIPTION OF THE INVENTION, when the speaker guide rib provided between the opening and the speaker of the sound emission opening of the baffle plate the inner surface of the housing Ru provided with a plurality of through-holes
Both assist in partitioning the speaker guide ribs vertically and horizontally.
The speaker guide rib is integrated with the speaker guide rib
A speaker device, wherein a plurality of through holes provided in a speaker guide rib minimizes the sound reflected from the speaker guide rib of an acoustic output generated from the speaker. The sky formed by the grill
Within between the acoustic output and the speaker emanating from the speaker
Even if tube resonance occurs with the sound reflected by the guide ribs,
Sound output from the speaker and the reflected sound from the speaker grill
Tube resonance with the
In the new reflected sound generated by speaker guide ribs, and vanishing out the reflected sound by the <br/> speaker guide ribs, speed
The reflected sound of the guide rib and the sound output from the speaker
Der those to be able to suppress the occurrence of resonance of the
You . An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is an exploded perspective view of a baffle structure of a speaker device according to Embodiment 1 of the present invention. The difference from FIG. 3 showing a conventional example is that a plurality of slit-shaped through holes are formed in a speaker guide rib 5. Since only the point 7 is provided and other points remain the same, the same parts as those shown in FIG. 3 are denoted by the same reference numerals, and description thereof will be omitted. In the speaker device having the above structure, a plurality of slit-shaped through holes 7 provided in the speaker guide rib 5 are provided.
Accordingly, the sound reflected from the speaker guide rib 5 is reduced, and resonance does not occur between the sound reflected from the speaker grill and the like. (Embodiment 2) FIG. 2 is an exploded perspective view of a baffle structure of a speaker device according to Embodiment 2 of the present invention. The difference from FIG. the auxiliary speakers guide ribs 8 in the interval of about lambda 1/4 in order to eliminate the resonance in the longitudinal direction of the acoustic waves of the wavelength lambda 1, which corresponds to the length of the speaker guide ribs 5 (hundreds Hz) arranged to partition vertically and horizontally Only the points are the same, and the other points are the same. Therefore, the same parts as those shown in FIG. In the speaker device having the above structure, the auxiliary speaker guide ribs 8 provided in the speaker guide ribs 5 so as to partition vertically and horizontally generate new reflected sounds, and the phases of the reflected sounds and the reflected sounds by the speaker guide ribs 5 are reversed. Thus, the resonance between the reflected sounds is eliminated. In the second embodiment, the resonance at the wavelength λ 1 (several hundred Hz) of the sound wave corresponding to the vertical length of the speaker guide rib 5 is eliminated. The resonance generated by the speaker guide rib can be attenuated by disposing the auxiliary speaker guide rib corresponding to the wavelength or the half wavelength, for example,
Eliminating the resonance at the wavelength λ 2 of the sound wave corresponding to the length of the speaker guide rib 5 in the horizontal direction can also be eliminated as in the vertical direction only by changing the frequency of the resonance sound. As described above, the shape and position of the auxiliary speaker guide ribs 8 are determined by the shape and dimensions of the speaker guide ribs 5. As described above, according to the loudspeaker apparatus of the present invention, it is possible to reproduce a sound close to the original loudspeaker characteristics by reducing the resonance generated by the loudspeaker guide ribs.
【図面の簡単な説明】
【図１】本発明の実施の形態１におけるスピーカ装置の
バッフル構造分解斜視図
【図２】本発明の実施の形態２におけるスピーカ装置の
バッフル構造分解斜視図
【図３】従来のスピーカ装置のバッフル構造分解斜視図
【符号の説明】
１ 筺体
２ バッフル板内面
３ ボス
４ 開口部
５ スピーカガイドリブ
６ スピーカグリル
７ 貫通孔
８ 補助スピーカガイドリブBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a baffle structure of a speaker device according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of a baffle structure of a speaker device according to Embodiment 2 of the present invention. [Explanation of reference numerals] 1 housing 2 inner surface of baffle plate 3 boss 4 opening 5 speaker guide rib 6 speaker grille 7 through hole 8 auxiliary speaker guide rib
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭64−891（ＪＰ，Ａ) 特開 平６−217387（ＪＰ，Ａ) 特開 平８−47076（ＪＰ，Ａ) 特開 平８−9486（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H04R 1/02 104 H04R 1/02 105 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-891 (JP, A) JP-A-6-217387 (JP, A) JP-A-8-47076 (JP, A) JP-A 8- 9486 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) H04R 1/02 104 H04R 1/02 105
Claims (1)
カの放音口との間に設けられたスピーカガイドリブに複
数の貫通孔を設けるとともに、前記スピーカガイドリブ
内に縦横に仕切る補助スピーカガイドリブを前記スピー
カガイドリブと一体に配設したことを特徴とするスピー
カ装置。(57) Patent Claims: 1. A plurality of through holes in the speaker guide rib provided between the opening of the baffle plate inner surface and the speaker of the sound emission opening of the housing is provided Rutotomoni, the speaker Guide rib
Insert the auxiliary speaker guide ribs that
A speaker device which is provided integrally with a guide rib .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18847396A JP3473279B2 (en) | 1996-06-29 | 1996-06-29 | Speaker device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18847396A JP3473279B2 (en) | 1996-06-29 | 1996-06-29 | Speaker device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1023582A JPH1023582A (en) | 1998-01-23 |
| JP3473279B2 true JP3473279B2 (en) | 2003-12-02 |
Family
ID=16224346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18847396A Expired - Fee Related JP3473279B2 (en) | 1996-06-29 | 1996-06-29 | Speaker device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3473279B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8116505B2 (en) | 2006-12-29 | 2012-02-14 | Sony Corporation | Speaker apparatus and display apparatus with speaker |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4676896B2 (en) * | 2006-02-14 | 2011-04-27 | 本田技研工業株式会社 | Speaker grill |
| JP4793273B2 (en) * | 2007-01-25 | 2011-10-12 | 船井電機株式会社 | LCD television receiver |
-
1996
- 1996-06-29 JP JP18847396A patent/JP3473279B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8116505B2 (en) | 2006-12-29 | 2012-02-14 | Sony Corporation | Speaker apparatus and display apparatus with speaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1023582A (en) | 1998-01-23 |
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