JPH07203578A - Speaker device - Google Patents
Speaker deviceInfo
- Publication number
- JPH07203578A JPH07203578A JP33585793A JP33585793A JPH07203578A JP H07203578 A JPH07203578 A JP H07203578A JP 33585793 A JP33585793 A JP 33585793A JP 33585793 A JP33585793 A JP 33585793A JP H07203578 A JPH07203578 A JP H07203578A
- Authority
- JP
- Japan
- Prior art keywords
- reflection plate
- acoustic tube
- speaker
- sound
- speaker device
- 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.)
- Granted
Links
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はテレビジョン受像機など
の映像用機器に利用され、スピーカの前面に音波を導く
音響管を結合したスピーカ装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker device which is used in a video device such as a television receiver and has an acoustic tube connected to a front surface of a speaker for guiding a sound wave.
【０００２】[0002]
【従来の技術】スピーカの前面部にホーンや音響管を設
け、スピーカから発生した音波を開口部まで導く方法
は、ホーンや音響管を用いない場合に比べて出力音圧が
大きく得られることや、特定の方向に音が伝えられるな
どの利点があり、従来から多く用いられている。2. Description of the Related Art A method in which a horn or an acoustic tube is provided on the front surface of a speaker and a sound wave generated from the speaker is guided to an opening can obtain a large output sound pressure as compared with the case where a horn or an acoustic tube is not used. , Has the advantage that sound can be transmitted in a specific direction, and has been widely used in the past.
【０００３】以下、図面を参照し従来の音響管を用いた
スピーカ装置について説明する。図４は、上記スピーカ
装置を内蔵したテレビジョン受像機の構造概念図であ
る。図４において１は音響管、８はスピーカユニット、
２６はテレビキャビネット、２７は陰極線管、２８はバ
ックキャビティを表わしたものである。A conventional speaker device using an acoustic tube will be described below with reference to the drawings. FIG. 4 is a structural conceptual diagram of a television receiver incorporating the above speaker device. In FIG. 4, 1 is an acoustic tube, 8 is a speaker unit,
26 is a television cabinet, 27 is a cathode ray tube, and 28 is a back cavity.
【０００４】以上のように構成されたスピーカ装置を内
蔵したテレビジョン受像機の動作について説明する。図
４に示すように、スピーカユニット８の前面部に音波を
導く音響管１を配置したスピーカ装置をテレビジョン受
像機内部の陰極線管２７に沿わせて内蔵し、さらにテレ
ビキャビネット２６を前記スピーカ装置に沿わせる構造
とすることにより、テレビジョン受像機の小型スリム化
が可能となるものである。The operation of the television receiver incorporating the speaker device constructed as described above will be described. As shown in FIG. 4, a speaker device in which a sound tube 1 for guiding sound waves is arranged on the front surface of a speaker unit 8 is built in along a cathode ray tube 27 inside a television receiver, and a TV cabinet 26 is provided in the speaker device. By adopting a structure that conforms to, it is possible to make the television receiver smaller and slimmer.
【０００５】図３は上記従来のスピーカ装置の構成を示
した平面断面図である。図３において９は音波を発生さ
せるスピーカユニット８の振動板で、１０はスピーカユ
ニット８と音響管１を密閉結合する縁立てリブ、７はス
ピーカユニット８の前面部に設けられたスロートの絞り
込み部、５及び６は前記スピーカユニット８より放射さ
れた音波を音響管１の開口部３へ導くためにそれぞれ両
サイドに設けられた第一の反射板及び第二の反射板、２
は吸音材、４は音波が通る音路である。FIG. 3 is a plan sectional view showing the structure of the conventional speaker device. In FIG. 3, 9 is a diaphragm of the speaker unit 8 for generating sound waves, 10 is an edge rib for hermetically connecting the speaker unit 8 and the acoustic tube 1, and 7 is a narrowing portion of the throat provided on the front surface of the speaker unit 8. Reference numerals 5 and 6 are a first reflection plate and a second reflection plate provided on both sides for guiding the sound wave radiated from the speaker unit 8 to the opening 3 of the acoustic tube 1.
Is a sound absorbing material, and 4 is a sound path through which sound waves pass.
【０００６】以上のように構成された従来のスピーカ装
置について、以下にその動作を説明する。まず、スピー
カユニット８に入力信号が印加されるとスピーカユニッ
ト８の振動板９が振動し、その音波が音響管１の内部の
音路４を通って音響管１の開口部３から放射される。The operation of the conventional speaker device configured as described above will be described below. First, when an input signal is applied to the speaker unit 8, the diaphragm 9 of the speaker unit 8 vibrates, and its sound wave is emitted from the opening 3 of the acoustic tube 1 through the sound path 4 inside the acoustic tube 1. .
【０００７】しかし、音響管１の開口部３で音響インピ
ーダンスが大きく変化しているために音波の一部は反射
し、音路４に戻ってきて定在波を作り、又音響管１の長
さで発生する定在波によりピークディップの激しい乱れ
た再生音圧周波数特性になってしまう。However, since the acoustic impedance greatly changes at the opening 3 of the acoustic tube 1, a part of the sound wave is reflected and returns to the sound path 4 to form a standing wave, and the acoustic tube 1 has a long length. Due to the standing wave generated at this point, the reproduced sound pressure frequency characteristic is severely disturbed with a peak dip.
【０００８】しかしながら、音響管１の内部に配置した
吸音材２は、この各定在波を吸収し抑制することにより
平坦な再生音圧周波数特性を作り出す。つまり、前記吸
音材２はこの種のスピーカ装置の再生原理上重要な役割
を果たしているものである。However, the sound absorbing material 2 disposed inside the acoustic tube 1 absorbs and suppresses each standing wave to produce a flat reproduced sound pressure frequency characteristic. That is, the sound absorbing material 2 plays an important role in the reproduction principle of this type of speaker device.
【０００９】更に第一の反射板５及び第二の反射板６
は、スピーカユニット８の振動板９から放出されスロー
トの絞り込み部７にて高められた音が吸音材２にできる
だけ吸収されないように配置され、特に中域の補正にも
作用している。これによって細長くほぼ矩形形状に近い
形状に構成された音響管１の開口部３により自然な音響
再生が可能となるものであった。Further, the first reflector 5 and the second reflector 6
Is arranged so that the sound emitted from the diaphragm 9 of the speaker unit 8 and enhanced by the narrowing portion 7 of the throat is not absorbed by the sound absorbing material 2 as much as possible, and also acts particularly on the correction of the middle range. As a result, natural sound reproduction is made possible by the opening 3 of the acoustic tube 1 which is elongated and has a substantially rectangular shape.
【００１０】[0010]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、図３に示すように音響管１の内部に発生す
る定在波を抑えるために設けた多量の吸音材２によって
中高域成分の音波まで吸収されてしまい、音圧が下がっ
てしまうという課題を有していた。しかし、この現象を
防ぐことを目的として第一の反射板５及び第二の反射板
６が設けられているが、図２の２９に上記従来のスピー
カ装置の再生音圧周波数特性を示すように中高域の音圧
低下を防ぐには充分でなく、更に再生音圧周波数特性が
乱れピークディップの多い特性になってしまい、音声の
明瞭度が低下するといった課題も有していた。又、定在
波を抑えるため吸音材２を大量に使用せざるを得ず、コ
スト面でも課題を残していたものであった。However, in the above-mentioned conventional structure, as shown in FIG. 3, a large amount of the sound absorbing material 2 provided to suppress the standing wave generated inside the acoustic tube 1 causes the sound waves of the middle and high frequency components to be absorbed. However, there is a problem that the sound pressure is lowered because the sound is absorbed. However, the first reflector 5 and the second reflector 6 are provided for the purpose of preventing this phenomenon. As shown in 29 of FIG. 2, the reproduced sound pressure frequency characteristics of the conventional speaker device are shown. It is not enough to prevent the sound pressure drop in the middle and high frequencies, and the reproduced sound pressure frequency characteristic is disturbed to have a large number of peak dips, which causes a problem that the clarity of the voice is lowered. Further, in order to suppress the standing wave, the sound absorbing material 2 has to be used in a large amount, and there has been a problem in terms of cost.
【００１１】本発明は上記従来の課題を解決するもの
で、音声の明瞭度の向上と音圧の向上を図り、更に再生
音圧周波数特性が平坦な特性になる音響特性の優れたス
ピーカ装置を提供することを目的とするものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art by providing a speaker device having an improved acoustic clarity and an improved sound pressure, and an excellent acoustic characteristic in which a reproduced sound pressure frequency characteristic is flat. It is intended to be provided.
【００１２】[0012]
【課題を解決するための手段】この課題を解決するため
に本発明のスピーカ装置は、スピーカの前面に開口部が
矩形形状の音波を導く音響管を結合し、この音響管の内
部にスピーカの前面側から音響管の開口部に向かってあ
る一定の長さを有しかつ側壁とつながるように一体で音
路に配置された第一の反射板ならびにこの第一の反射板
と音響管の側壁との間でかつ第一の反射板の始端部より
音響管の開口部側に終端部がくるようにスピーカの前面
から配置された第二の反射板を独立して設けると共に第
一の反射板と第二の反射板との隙間は第二の反射板と側
壁との間に形成される空間部と通じかつ一定の距離を開
けた構成とし、さらにこれらと対面する側にスピーカの
前面側から音響管の開口部に向かって配置された第四の
反射板ならびにこの第四の反射板の終端部より手前に始
端部がくるように配置された第三の反射板を独立して設
けると共に第三の反射板と側壁との間に吸音材を配置
し、第四の反射板と第三の反射板との隙間は上記吸音材
の部屋と通じるように構成したものである。In order to solve this problem, a speaker device according to the present invention has a front surface of a speaker and an acoustic tube for guiding a sound wave having a rectangular opening, which is coupled to the inside of the speaker. A first reflector having a certain length from the front surface side toward the opening of the acoustic tube and integrally arranged in the sound path so as to be connected to the sidewall, and the first reflector and the sidewall of the acoustic tube. And a second reflection plate independently arranged from the front surface of the speaker such that the terminal end portion is closer to the opening side of the acoustic tube than the start end portion of the first reflection plate and the first reflection plate. The gap between the second reflection plate and the second reflection plate communicates with the space formed between the second reflection plate and the side wall and has a certain distance, and from the front side of the speaker to the side facing them. A fourth reflector plate and a second reflector plate facing the opening of the acoustic tube. The third reflecting plate is arranged independently so that the starting end portion comes before the terminating end portion of the fourth reflecting plate, and the sound absorbing material is arranged between the third reflecting plate and the side wall. The gap between the reflection plate and the third reflection plate is configured to communicate with the room of the sound absorbing material.
【００１３】[0013]
【作用】この構成により、機器への組込みを考慮し開口
部の形状を細長い矩形形状としたホーンや音響管を有す
るスピーカ装置においても、音響管内部に設置した第一
の反射板ならびに第二の反射板と音響管の側壁との間に
形成される空間部と第一の反射板と第二の反射板との間
に形成される隙間が共鳴し、又音響管内部に二つの独立
した反射板を設け、この二つの反射板の隙間を吸音材の
部屋に通じさせ吸音することにより、管内に発生する定
在波を互いに吸収し平坦な特性が得られ、さらに前記二
つの独立した反射板によって生じる共振現象が５００〜
５ＫHzの周波数帯域を強調するように設定された構成の
ものを組み合わせることにより人の音声を構成する重要
な周波数帯域である５００〜５ＫHzの音圧を向上させる
ことが可能となり、従来品では実現できなかった音声の
明瞭度向上が実現できるものである。With this configuration, even in a speaker device having a horn or an acoustic tube whose opening has an elongated rectangular shape in consideration of incorporation into a device, the first reflector and the second reflector installed inside the acoustic tube are provided. The space formed between the reflector and the side wall of the acoustic tube resonates with the gap formed between the first reflector and the second reflector, and two independent reflections occur inside the acoustic tube. A plate is provided, and the gap between the two reflection plates is made to pass through the room of the sound absorbing material to absorb sound, so that standing waves generated in the pipe are mutually absorbed and flat characteristics are obtained, and further, the two independent reflection plates are provided. Resonance phenomenon caused by
It is possible to improve the sound pressure of 500 to 5 KHz, which is an important frequency band that constitutes human voice, by combining the components set to emphasize the frequency band of 5 KHz, which is not possible with conventional products. It is possible to realize the improvement of the clarity of the voice, which was not possible.
【００１４】特に、空間部の大きさと、隙間の幅や長さ
の組合せを変化させさらに吸音材の大きさや材質を変化
させることにより、音響管内部に発生する定在波を抑え
て音響特性的にも平坦にすることができ、しかも従来の
スピーカ装置に用いられているような吸音材だけを利用
して音響管内部に発生する定在波を抑える方法に比べ音
圧の低下も少なく、さらに吸音材の使用量も半分ですむ
ためにコスト的にも安価にすることができる。In particular, by changing the size and material of the sound absorbing material by changing the combination of the size of the space and the width and length of the gap, the standing wave generated inside the acoustic tube is suppressed and the acoustic characteristics are improved. In addition, the sound pressure can be made flat, and the sound pressure is less reduced compared to the method of suppressing the standing wave generated inside the acoustic tube by using only the sound absorbing material used in the conventional speaker device. Since the amount of sound absorbing material used is half, the cost can be reduced.
【００１５】[0015]
【実施例】以下、本発明の一実施例について図面を参照
しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１６】図１は同実施例における音響管部を主とし
たスピーカ装置の平面断面図である。図１において１８
は全帯域再生用スピーカユニットであり、この全帯域再
生用スピーカユニット１８の前面部には、機器への組込
みを考慮し細長い矩形形状とした音響管開口部１３を有
する構成とする音波を導く音響管１１が縁立てリブ２０
を介し密閉結合されている。FIG. 1 is a plan sectional view of a speaker device mainly including an acoustic tube portion in the embodiment. 18 in FIG.
Is a speaker unit for full-band reproduction, and an acoustic wave guiding structure configured to have an elongated rectangular acoustic tube opening 13 on the front surface of the speaker unit 18 for full-band reproduction in consideration of incorporation into a device. The pipe 11 is a rib 20
Is hermetically coupled via.
【００１７】又、この音響管１１の内部は、全帯域再生
用スピーカユニット１８より放射される音波の音路１４
を構成するとともに、左右いずれか片側に音響特性の補
正が可能なようにスピーカユニット１８の前面側から音
響管１１の開口部１３に向かいある一定の長さを有し、
かつ側壁３１とつながっている第一の反射板１５が、ま
たこの第一の反射板１５と音響管１１の側壁３１との間
でかつ第一の反射板１５の始端部（スピーカユニット１
８側）より音響管１１の開口部１３側に終端部がくるよ
うにスピーカユニット１８の前面に配置された第二の反
射板１６を形成している。また、この第一の反射板１５
と第二の反射板１６との隙間２１は空間部（第一の反射
板１５ならびに第二の反射板１６と音響管１１の側壁３
１間の空間部）２２に通じるように距離を持たせるため
のものである。また、これらと対面する側にスピーカユ
ニット１８の前面に第四の反射板２４を設置し、その第
四の反射板２４の終端部より手前に始端部がくるように
独立して配置した第三の反射板２３を形成し、第四の反
射板２４と第三の反射板２３との隙間２５も吸音材１２
の部屋に通じるように距離を持たせるためのものであ
る。Inside the acoustic tube 11, the sound path 14 of the sound wave radiated from the speaker unit 18 for full-band reproduction is provided.
And has a certain length from the front side of the speaker unit 18 to the opening 13 of the acoustic tube 11 so that the acoustic characteristics can be corrected on either one of the left and right sides.
The first reflection plate 15 connected to the side wall 31 is also between the first reflection plate 15 and the side wall 31 of the acoustic tube 11 and the starting end portion of the first reflection plate 15 (speaker unit 1).
The second reflection plate 16 arranged on the front surface of the speaker unit 18 is formed so that the end portion comes to the opening 13 side of the acoustic tube 11 from the (8 side). In addition, the first reflector 15
The space 21 between the second reflection plate 16 and the second reflection plate 16 is a space portion (the first reflection plate 15 and the side wall 3 of the second reflection plate 16 and the acoustic tube 11).
This is for providing a distance so as to communicate with the space portion 22 between the two. In addition, a fourth reflector 24 is installed on the front surface of the speaker unit 18 on the side facing them, and the fourth reflector 24 is independently arranged so that the start end comes before the end end of the fourth reflector 24. And the gap 25 between the fourth reflector 24 and the third reflector 23 is also formed in the sound absorbing member 12.
It is for giving a distance so that it leads to the room.
【００１８】以上のように構成された本発明のスピーカ
装置についてその動作を説明する。まず、全帯域再生用
スピーカユニット１８に入力信号が印加されるとスピー
カの振動板１９が振動し、その音波が音響管１１の内部
の音路１４を通って音響管１１の開口部１３に導かれる
が、その際、第一の反射板１５の長さにより特定の周波
数帯域の音圧を強調し且つ、音響管１１の長さにより発
生する定在波の抑制は、空間部２２と空間部２２に通じ
るように距離を持たせた隙間２１との組合せによって生
じる共鳴現象と、第四の反射板２４の後面に設置した吸
音材１２とによって吸収し、総合的に中高域再生帯域を
コントロールすることができ、人の音声を構成する重要
な周波数帯域である中高域の音圧を向上させることが可
能となる。The operation of the speaker device of the present invention constructed as above will be described. First, when an input signal is applied to the speaker unit 18 for full-band reproduction, the diaphragm 19 of the speaker vibrates, and its sound wave is guided to the opening 13 of the acoustic tube 11 through the sound path 14 inside the acoustic tube 11. At that time, the sound pressure of a specific frequency band is emphasized by the length of the first reflector 15 and the standing wave generated by the length of the acoustic tube 11 is suppressed by the space portion 22 and the space portion. The resonance phenomenon caused by the combination with the gap 21 having a distance so as to communicate with 22 and the sound absorbing material 12 installed on the rear surface of the fourth reflecting plate 24 are absorbed to comprehensively control the mid-high range reproduction band. Therefore, it is possible to improve the sound pressure in the middle and high frequencies, which is an important frequency band that constitutes human voice.
【００１９】また、本実施例によるスピーカ装置の再生
音圧周波数特性３０を従来のスピーカ装置の音圧周波数
特性２９と共に図２に比較して示している。The reproduced sound pressure frequency characteristic 30 of the speaker device according to this embodiment is shown in FIG. 2 together with the sound pressure frequency characteristic 29 of the conventional speaker device.
【００２０】この図２からも分かるように、空間部２２
と空間部２２に通じるように距離をもたせた隙間２１を
配置し、且つ第四の反射板２４の後面に設置した吸音材
１２とを組み合わせて設置することにより、音響管１１
の内部の定在波を抑えると同時に、図２の３０に示すよ
うにピークディップが少なくかつ、中高域の音圧の高い
特性とすることが可能となり、従来では実現できなかっ
た音声の明瞭度の向上と再生音圧周波数特性の平坦化、
更に吸音材の削減が図れ、優れた音響特性を実現できる
ものである。As can be seen from FIG. 2, the space 22
And the sound absorbing material 12 installed on the rear surface of the fourth reflecting plate 24 are installed in combination with each other to provide the acoustic tube 11
It is possible to suppress the standing wave in the inside of the speaker, and at the same time, to reduce the peak dip and to have the characteristics of high sound pressure in the middle and high frequencies as shown in 30 of FIG. Improved and flattened playback sound pressure frequency characteristics,
Further, the sound absorbing material can be reduced, and excellent acoustic characteristics can be realized.
【００２１】又、本発明のスピーカ装置をテレビジョン
受像機に内蔵することにより、テレビジョン受像機の小
型化、デザインのスリム化を容易に実現できるほか、高
性能で高音質のテレビジョン受像機とすることが可能と
なるものである。Further, by incorporating the speaker device of the present invention into a television receiver, the television receiver can be easily downsized and the design can be made slim, and the television receiver having high performance and high sound quality. Is possible.
【００２２】なお、本発明の音響管１１の構造により構
成されたスピーカ装置に、後面キャビネットおよびバス
レフ・ポート等を設けた場合においても同様の効果が得
られることは言うまでもない。Needless to say, the same effect can be obtained when the speaker device constructed by the structure of the acoustic tube 11 of the present invention is provided with a rear cabinet and a bass reflex port.
【００２３】[0023]
【発明の効果】以上のように本発明によるスピーカ装置
は、人の音声を構成する重要な周波数帯域である５００
〜５ＫHzの音圧を向上させることが可能となる他、吸音
材と共鳴器とを組み合わせて利用することにより管内に
生じる定在波を完全に吸収することも可能となり、ピー
クディップの少ないフラットな再生音圧周波数特性を実
現することができ、従来品では実現できなかった音声の
明瞭度向上を図った優れた音響特性を実現でき、しかも
吸音材を従来の半分しか使用しないため、中高域の音圧
劣化も少なく、コスト面でも優位なスピーカ装置を実現
できるものである。As described above, the speaker device according to the present invention has an important frequency band 500 that constitutes human voice.
In addition to being able to improve the sound pressure up to 5 KHz, it is also possible to completely absorb the standing wave generated in the pipe by using a sound absorbing material and a resonator in combination, and it is possible to reduce the peak dip. Playback sound pressure frequency characteristics can be realized, excellent acoustic characteristics with improved clarity of voice that could not be achieved with conventional products can be realized, and since only half of the sound absorbing material is used in the middle and high frequencies It is possible to realize a speaker device that is less costly to deteriorate sound pressure and is superior in cost.
【図１】本発明の一実施例によるスピーカ装置の構成を
示した平面断面図FIG. 1 is a plan sectional view showing a configuration of a speaker device according to an embodiment of the present invention.
【図２】本発明のスピーカ装置の再生音圧周波数特性と
従来のスピーカ装置の同特性を比較した再生音圧周波数
特性図FIG. 2 is a reproduced sound pressure frequency characteristic diagram comparing the reproduced sound pressure frequency characteristic of the speaker device of the present invention and the same characteristic of the conventional speaker device.
【図３】従来のスピーカ装置の構成を示した平面断面図FIG. 3 is a plan sectional view showing a configuration of a conventional speaker device.
【図４】従来の音響管を用いたスピーカ装置を内蔵した
テレビジョン受像機の構造概念図FIG. 4 is a structural conceptual diagram of a television receiver including a speaker device using a conventional acoustic tube.
１１ 音響管 １２ 吸音材 １３ 音響管の開口部 １４ 音路 １５ 第一の反射板 １６ 第二の反射板 １７ スロートの絞り込み部 １８ スピーカユニット １９ スピーカの振動板 ２０ 縁立てリブ ２１ 第一の反射板と第二の反射板との隙間 ２２ 空間部 ２３ 第三の反射板 ２４ 第四の反射板 ２５ 第三の反射板と第四の反射板との隙間 ２９ 従来のスピーカ装置の再生音圧周波数特性 ３０ 本発明のスピーカ装置の音圧周波数特性 ３１ 側壁 11 Acoustic Tube 12 Sound Absorbing Material 13 Acoustic Tube Opening 14 Sound Path 15 First Reflector 16 Second Reflector 17 Throat Narrowing Part 18 Speaker Unit 19 Speaker Diaphragm 20 Edge Rib 21 First Reflector Gap between the second reflection plate and the second reflection plate 22 space portion 23 third reflection plate 24 fourth reflection plate 25 gap between the third reflection plate and the fourth reflection plate 29 reproduction sound pressure frequency characteristics of the conventional speaker device 30 Sound pressure frequency characteristics of the speaker device of the present invention 31 Side wall
Claims (1)
波を導く音響管を結合し、この音響管の内部にスピーカ
の前面側から音響管の開口部に向かってある一定の長さ
を有しかつ側壁とつながるように一体で音路に配置され
た第一の反射板ならびにこの第一の反射板と音響管の側
壁との間でかつ第一の反射板の始端部より音響管の開口
部側に終端部がくるようにスピーカの前面から配置され
た第二の反射板を独立して設けると共に第一の反射板と
第二の反射板との隙間は第二の反射板と側壁との間に形
成される空間部と通じかつ一定の距離を開けた構成と
し、さらにこれらと対面する側にスピーカの前面側から
音響管の開口部に向かって配置された第四の反射板なら
びにこの第四の反射板の終端部より手前に始端部がくる
ように配置された第三の反射板を独立して設けると共に
第三の反射板と側壁との間に吸音材を配置し、第四の反
射板と第三の反射板との隙間は上記吸音材の部屋と通じ
るように構成したスピーカ装置。1. An acoustic tube for guiding a sound wave having a rectangular shape is coupled to the front surface of the speaker, and a certain length is provided inside the acoustic tube from the front surface side of the speaker toward the opening portion of the acoustic tube. And an opening of the acoustic tube between the first reflecting plate and the side wall of the acoustic tube and from the starting end of the first reflecting plate, the first reflecting plate being integrally arranged in the sound path so as to be connected to the side wall. The second reflection plate arranged from the front surface of the speaker is independently provided so that the end portion is on the side of the second reflection plate, and the gap between the first reflection plate and the second reflection plate is defined by the second reflection plate and the side wall. And a fourth reflector plate which is arranged so as to communicate with the space formed between the two and a certain distance apart, and which is arranged from the front side of the speaker toward the opening of the acoustic tube on the side facing them. The third reflector is arranged so that the starting end comes before the ending end of the fourth reflector. Is installed independently, and a sound absorbing material is arranged between the third reflecting plate and the side wall, and the gap between the fourth reflecting plate and the third reflecting plate is communicated with the room for the sound absorbing material. The configured speaker device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33585793A JP3435776B2 (en) | 1993-12-28 | 1993-12-28 | Speaker device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33585793A JP3435776B2 (en) | 1993-12-28 | 1993-12-28 | Speaker device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07203578A true JPH07203578A (en) | 1995-08-04 |
| JP3435776B2 JP3435776B2 (en) | 2003-08-11 |
Family
ID=18293166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33585793A Expired - Fee Related JP3435776B2 (en) | 1993-12-28 | 1993-12-28 | Speaker device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3435776B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1066182A (en) * | 1996-08-21 | 1998-03-06 | Matsushita Electric Ind Co Ltd | Speaker unit |
| JP2018201598A (en) * | 2017-05-30 | 2018-12-27 | タイガー魔法瓶株式会社 | Lid body, cooker, and rice cooker |
-
1993
- 1993-12-28 JP JP33585793A patent/JP3435776B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1066182A (en) * | 1996-08-21 | 1998-03-06 | Matsushita Electric Ind Co Ltd | Speaker unit |
| JP2018201598A (en) * | 2017-05-30 | 2018-12-27 | タイガー魔法瓶株式会社 | Lid body, cooker, and rice cooker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3435776B2 (en) | 2003-08-11 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |