JPH05168083A - Speaker unit and television receiver using the same - Google Patents

Abstract

PURPOSE:To obtain a compact speaker attaining high sound quality by uniting a speaker for high-band reproduction and a speaker for middle low-band reproduction which have been placed separately, and thereby eliminating the tone quality with a sense of incongruity. CONSTITUTION:A speaker 6 for high-band reproduction and a speaker 1 for middle low-band reproduction are pseudorically arranged on the coaxial. The dimension of the opening port part 5 of an acoustic tube 2 can be made slim by providing a sound guide 13 to guide the sound wave of the middle high-band component radiated from the speaker 1 to an opening part in the form similar to the direct sound. Thus, the speaker realizing the improved sound image localization and articulation can be provided.

Description

【発明の詳細な説明】Detailed Description of the Invention

【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
の映像機器や車載用音響装置に利用されるスピーカ装置
およびそれを用いたテレビジョン受像機に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker device used in a video device such as a television receiver or an in-vehicle audio device, and a television receiver using the speaker device.

【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。以下
図面を参照しながら、従来の音響管を用いたスピーカ装
置について説明する。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 the horn or the acoustic tube is not used. Also, it has the advantage that sound can be transmitted in a specific direction, and has been widely used in the past. A speaker device using a conventional acoustic tube will be described below with reference to the drawings.

【０００３】図３は上記従来の音響管を用いたスピーカ
装置を用いて構成した中低域再生用スピーカ装置と高域
再生用スピーカとを併用して構成されたテレビジョン受
像機の斜視図を示す。図３において１は中低域再生用ス
ピーカ、２は中低域再生用スピーカ１を取り付けた音響
管、３はテレビキャビネット、４は陰極線管、５は中低
域再生用スピーカ１の音響管２の開口部、６は前記音響
管２の開口部５の上部に設置された高域再生用スピーカ
を示す。FIG. 3 is a perspective view of a television receiver configured by using a speaker device for middle and low range reproduction and a speaker for high range reproduction, which are configured by using the speaker device using the conventional acoustic tube. Show. In FIG. 3, 1 is a speaker for middle and low range reproduction, 2 is an acoustic tube to which the speaker 1 for middle and low range reproduction is attached, 3 is a television cabinet, 4 is a cathode ray tube, and 5 is an acoustic tube 2 of the speaker 1 for middle and low range reproduction. The reference numeral 6 designates a high-frequency reproduction speaker installed above the opening 5 of the acoustic tube 2.

【０００４】以上のように従来の音響管２を用いたスピ
ーカ装置を内蔵して構成されたテレビジョン受像機の機
能について以下に説明する。図３に示すように、中低域
再生用スピーカ１の前面部に音波を導く音響管２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
４に沿わせて内蔵し、さらにテレビキャビネット３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形スリム化が可能となるものであ
る。The function of the television receiver constructed by incorporating the speaker device using the conventional acoustic tube 2 as described above will be described below. As shown in FIG. 3, a speaker device in which a sound tube 2 for guiding sound waves is arranged on the front surface of a speaker 1 for reproducing low and middle frequencies is built in along a cathode ray tube 4 inside a television receiver, and further, a TV cabinet 3 By providing a structure along the speaker device, it is possible to make the television receiver small and slim.

【０００５】また、一般に高域再生用スピーカ６の場合
スピーカ形状を小形化することが可能となる他、前記音
響管２を用いた中低域再生用スピーカと同様の方式で音
を開口部に導くためには、音響管２の内部に発生する定
在波を除去するために、音響管２の内部に吸音材を適正
配置する必要があるとか、高域成分を減衰させることな
く開口部前面に導くためには音響管２の内部構成が複雑
になる等の理由で、比較的容易にテレビジョン受像機の
コンパクト化が図れる手段としてテレビジョン受像機の
前面に高域再生用スピーカ６を設置する方式が用いられ
ていた。Further, in general, in the case of the high frequency reproduction speaker 6, the speaker shape can be made small, and in addition, the sound can be output to the opening portion in the same manner as the middle and low frequency reproduction speaker using the acoustic tube 2. In order to guide the sound wave, it is necessary to properly arrange a sound absorbing material inside the acoustic tube 2 in order to remove the standing wave generated inside the acoustic tube 2, or the front surface of the opening without attenuating the high frequency component. In order to lead to the above, the high frequency reproduction speaker 6 is installed on the front surface of the television receiver as a means which can relatively easily downsize the television receiver because the internal structure of the acoustic tube 2 becomes complicated. The method of doing was used.

【０００６】[0006]

【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、中低域再生用スピーカ１と高域再生用ス
ピーカ６の設置位置が大きく異なっているため、中低域
再生用スピーカ１より再生される音波と高域再生用スピ
ーカ６より再生される音波との位相差が各周波数帯域に
おいて発生し、テレビジョン受像機としてのスピーカ装
置の音圧周波数特性として見た場合、図４の７に示すよ
うにピークディップの多い特性となってしまう他、試聴
結果としても違和感のある音質となっていた。また、図
３に示したように、中低域再生用スピーカ１の上面に高
域再生用スピーカ６を配置しているため、スピーカ設置
が異なっていることによって中高域再生帯域において音
が上下に移動するといったような問題を有しており、ひ
いては音像定位感および明瞭度が悪く高性能テレビジョ
ン受像機用のスピーカ装置として見た場合十分に満足す
るものとはいえなかった。However, in the above-mentioned conventional configuration, since the installation positions of the mid-low range reproduction speaker 1 and the high-range reproduction speaker 6 are largely different, the reproduction from the mid-low range reproduction speaker 1 is performed. A phase difference between the generated sound wave and the sound wave reproduced by the high-frequency reproducing speaker 6 is generated in each frequency band, and when viewed as the sound pressure frequency characteristic of the speaker device as the television receiver, it is 7 in FIG. As shown in the figure, in addition to the characteristics with many peak dips, the sound quality was uncomfortable as a result of listening. Further, as shown in FIG. 3, since the high-frequency reproduction speaker 6 is arranged on the upper surface of the low- and middle-frequency reproduction speaker 1, since the speaker installation is different, the sound rises and falls in the middle- and high-frequency reproduction band. However, it has a problem of moving, and the sound image localization feeling and intelligibility are poor, and it cannot be said to be sufficiently satisfactory when viewed as a speaker device for a high-performance television receiver.

【０００７】本発明は上記従来の問題点を解決するもの
で、音像定位感および音声の明瞭度の向上と、さらに
は、音響管開口部５の超スリム化をも図った優れた音響
特性を得ることのできるスピーカ装置を提供することを
目的とするものである。The present invention solves the above-mentioned conventional problems, and has excellent acoustic characteristics in which the sound image localization feeling and the intelligibility of voice are improved, and further, the acoustic tube opening 5 is made extremely slim. An object is to provide a speaker device that can be obtained.

【０００８】[0008]

【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、中低域再生用スピーカの前
面に開口部がほぼ短形形状の音波を導く音響管を配置
し、この音響管の内部の中低域再生用スピーカの前面部
に高域再生用スピーカを近接配置すると共に、この高域
再生用スピーカの中心軸と中低域再生用スピーカの中心
軸とが一致しない疑似同軸構造となるように構成したも
のである。In order to solve this problem, the speaker device of the present invention comprises an acoustic tube for guiding a sound wave whose opening is substantially rectangular in the front of a speaker for reproducing low and middle frequencies. A high-frequency reproduction speaker is placed close to the front of the mid- and low-frequency reproduction speaker inside the sound tube, and the center axis of this high-frequency reproduction speaker does not match the center axis of the middle- and low-frequency reproduction speaker. It is configured to have a coaxial structure.

【０００９】[0009]

【作用】この構成により、機器への組み込みを考慮し開
口部を長細い矩形形状とし、さらに、音響管開口部の超
スリム化を図ったスピーカ装置においても、音響管の内
部の中低域再生用スピーカの前面部に高域再生用スピー
カを近接して疑似同軸構造配置することによって、中低
域再生用スピーカより再生される中高域成分と高域再生
用スピーカより再生される高域成分の音波が音響管内部
で合成され、さらに減衰されることなく、ごく自然に近
い状態の音響信号として、音響管の開口部前面に導かれ
ることが可能となり、従来品では実現できなかった音像
定位感および音声の明瞭度の向上を図った優れた音響特
性を可能とし、さらに、音響管開口部寸法の超スリム化
をも可能とするものであり、ひいては、テレビジョン受
像機のさらなるコンパクト化および高音質化が図れるこ
ととなる。With this configuration, in consideration of incorporation into a device, the opening has a long and narrow rectangular shape, and further, even in a speaker device in which the opening of the sound tube is made extremely slim, the middle and low range reproduction inside the sound tube is performed. By arranging a high-frequency reproduction speaker close to the front part of the speaker for pseudo-coaxial structure, the high-frequency component reproduced from the low-frequency reproduction speaker and the high-frequency component reproduced from the high-frequency reproduction speaker are separated. Sound waves are synthesized inside the acoustic tube, and can be guided to the front of the opening of the acoustic tube as an acoustic signal in a state that is almost natural without further attenuation, and a sound image localization feeling that could not be realized with conventional products. It also enables excellent acoustic characteristics with improved intelligibility of sound, and also enables ultra-slim reduction of the acoustic tube opening size. So that the compact and high sound quality can be achieved.

【００１０】[0010]

【実施例】以下、本発明の実施例について、図面を参照
しながら説明する。なお、図３および図４の符号と同一
符号のものは同一部分を示す。Embodiments of the present invention will be described below with reference to the drawings. The same reference numerals as those in FIGS. 3 and 4 denote the same parts.

【００１１】図１は本発明の一実施例における音響管部
を主としてスピーカ装置の構成を部分断面図して示した
斜視図である。図１において１は中低域再生用スピーカ
であり、この中低域再生用スピーカ１の前面部には機器
への組み込みを考慮し長細い矩形形状とした開口部５を
有する構成とした音波を導く音響管２が配置されてい
る。FIG. 1 is a perspective view showing a partial cross-sectional view of the structure of a speaker device, mainly an acoustic tube portion according to an embodiment of the present invention. In FIG. 1, reference numeral 1 is a speaker for mid- and low-frequency reproduction, and a sound wave having a configuration in which a narrow rectangular opening 5 is formed on the front surface of the mid-and-low-frequency reproduction speaker 1 in consideration of incorporation into equipment. A guiding acoustic tube 2 is arranged.

【００１２】また、この音響管２の内部は、中低域再生
用スピーカ１の前面部に高域再生用スピーカ６を近接し
て配置し、この高域再生用スピーカ６の中心軸Ａと中低
域再生用スピーカ１の中心軸Ｂとが一致しない構成と
し、さらに、高域再生用スピーカ６の前面部両サイドに
反射板１１，１２を設置し、片側の反射板１１は高域再
生用スピーカ６に近接配置し、他方の反射板１２は高域
再生用スピーカ６と反射板１２との間に、中低域再生用
スピーカ１より放射される中高域成分の音波を直接開口
部にまで導くことが可能な音導１３を介して配置する構
成となっている。Further, inside the acoustic tube 2, a high-frequency reproducing speaker 6 is arranged in close proximity to the front surface of the low- and low-frequency reproducing speaker 1, and the central axis A of the high-frequency reproducing speaker 6 and the center axis A of the high-frequency reproducing speaker 6 are arranged. The central axis B of the low-frequency reproducing speaker 1 is not aligned, and the reflectors 11 and 12 are installed on both sides of the front surface of the high-frequency reproducing speaker 6, and the one reflector 11 is for high-frequency reproducing. The other reflection plate 12 is arranged close to the speaker 6, and the sound wave of the mid-high range component radiated from the mid-low range reproduction speaker 1 is directly delivered to the opening between the high-frequency reproduction speaker 6 and the reflection plate 12. It is arranged such that it is arranged via a sound guide 13 which can be guided.

【００１３】また、前記高域再生用スピーカ６の背面両
サイドには、中低域再生用スピーカ１の中低域成分の音
波を導くための空洞８を介して、中低域再生用スピーカ
１より再生される音波の音響特性補正用の反射板９およ
び吸音材１０が配置された構成となっている。Further, on both sides of the back surface of the high frequency reproduction speaker 6, a mid and low frequency reproduction speaker 1 is provided with cavities 8 for guiding the sound waves of the middle and low frequency components of the middle and low frequency reproduction speaker 1. A reflection plate 9 and a sound absorbing material 10 for correcting the acoustic characteristics of the reproduced sound wave are arranged.

【００１４】以上のように構成された本発明の音響管２
を用いたスピーカ装置より再生される音響信号は、中低
域再生用スピーカ１の前面部に高域再生用スピーカ６を
近接して疑似同軸構造配置すると共に、中低域再生用ス
ピーカ１より放射される中高域成分の音波を直接開口部
５まで導くことが可能な音導１３を設けたことによっ
て、中低域再生用スピーカ１より再生される中高域成分
の音波と、高域再生用スピーカ６より再生される高域成
分の音波が音響管内部で自然に合成され、さらに、高域
再生用スピーカ６の両サイドに設けた反射板１１，１２
によって減衰することなく、ごく自然に近い状態の音響
信号として、音響管開口部５の前面に導かれることが可
能となるものである。The acoustic tube 2 of the present invention constructed as described above.
The acoustic signal reproduced from the speaker device using the is radiated from the mid- and low-frequency reproduction speaker 1 while the high-frequency reproduction speaker 6 is arranged close to the front part of the mid- and low-frequency reproduction speaker 1 in a pseudo-coaxial structure. By providing the sound guide 13 that can directly guide the sound waves of the middle and high frequency components to the opening 5, the sound waves of the middle and high frequency components reproduced by the middle and low frequency reproduction speaker 1 and the high frequency reproduction speaker. The sound waves of the high frequency component reproduced from 6 are naturally synthesized inside the acoustic tube, and the reflection plates 11 and 12 provided on both sides of the high frequency reproduction speaker 6 are further combined.
It is possible to be guided to the front surface of the acoustic tube opening 5 as an acoustic signal in a state close to natural without being attenuated by.

【００１５】また、高域再生用スピーカ６の背面両サイ
ドに設けた左右の長さの異なる反射板９および吸音材１
０により、中低域再生用スピーカ１より再生される中低
域成分の音波が、空洞８を介して音響管開口部５まで導
かれるものであり、この音響特性補正用の反射板９およ
び吸音材１０が無い状態では中低域の再生帯域において
図２、１５に示すようにピークディップの多い特性とな
ってしまうものであるが、以上のような構成とすること
によってこの現象を抑えたスピーカ装置とすることが可
能となるものである。Further, the reflector 9 and the sound absorbing material 1 provided on both sides of the rear surface of the high frequency reproducing speaker 6 and having different left and right lengths.
By 0, the sound waves of the middle and low range components reproduced from the middle and low range reproduction speaker 1 are guided to the acoustic tube opening 5 through the cavity 8. The reflection plate 9 and the sound absorption for correcting the acoustic characteristics are provided. In the state where the material 10 is not provided, the characteristics with a large number of peak dips occur in the low- and middle-range reproduction bands as shown in FIGS. 2 and 15. However, the speaker having the above configuration suppresses this phenomenon. The device can be used.

【００１６】よって、テレビジョン受像機としてのスピ
ーカ装置の音圧周波数特性として見た場合、図２の１４
に示すようにピークディップの少ない特性とすることが
可能となる他、中低域再生用スピーカ１と高域再生用ス
ピーカ６の二つのスピーカが疑似同軸構造配置されてい
ることによって、中高域再生帯域において音が上下に移
動するといったような問題を解消でき、従来では実現で
きなかった音像定位感および音声の明瞭度の向上を図っ
た優れた音響特性を可能とし、さらに音響管開口部寸法
のさらなるスリム化を実現する際、大きな課題となって
いた中高域成分の音圧感が低下する現象を、高域再生用
スピーカ６の側面に音導１３を設け、かつ、中低域再生
用スピーカ１の中心軸Ｂと高域再生用スピーカ６の中心
軸Ａとを１０mm〜２０mm片側へずらした構成としたこと
によって、中高域再生帯域の音圧感の向上と音圧周波数
特性の平坦化が可能となり、音響管開口部寸法の超スリ
ム化を可能とするものであり、ひいては、テレビジョン
受像機のさらなるコンパクト化および高音質化が図れる
こととなる。Therefore, when viewed as the sound pressure frequency characteristic of the speaker device as the television receiver, it is 14 in FIG.
As shown in FIG. 3, it is possible to obtain characteristics with less peak dip, and the two speakers of the mid-low range reproduction speaker 1 and the high-range reproduction speaker 6 are arranged in a pseudo-coaxial structure, so that the mid-high range reproduction is achieved. It is possible to solve problems such as the sound moving up and down in the band, and it is possible to achieve excellent acoustic characteristics that have not been realized in the past with improved sound image localization and voice clarity. To realize further slimming, the phenomenon that the sound pressure feeling of the middle and high frequency components is lowered, which is a big problem, is provided with the sound guide 13 on the side surface of the high frequency reproduction speaker 6, and the low and middle frequency reproduction speaker 1 is provided. It is possible to improve the sound pressure feeling in the mid-high range reproduction band and flatten the sound pressure frequency characteristics by arranging the center axis B of the above and the center axis A of the high-frequency reproduction speaker 6 to one side by 10 mm to 20 mm. Therefore, the size of the acoustic tube opening can be made extremely slim, and further, the television receiver can be made more compact and the sound quality can be improved.

【００１７】なお、本発明の音響管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
ることはいうまでもない。Needless to say, the same effect can be obtained when the rear cabinet, the bass reflex port, etc. are provided in the speaker device constructed by the structure of the acoustic tube of the present invention.

【００１８】[0018]

【発明の効果】以上のように本発明は、中低域再生用ス
ピーカの前面に開口部がほぼ矩形形状の音波を導く音響
管を配置し、この音響管の内部の中低域再生用スピーカ
の前面部に高域再生用スピーカを近接配置すると共に、
この高域再生用スピーカの中心軸と中低域再生用スピー
カの中心軸とが一致しない構成とし疑似同軸構造とした
ことにより、中低域再生用スピーカより再生される中高
域成分の減衰を抑え、さらには、近接配置した高域再生
用スピーカより再生される高域成分とが、ごく自然に近
い状態で合成された音響信号として音響管の開口部の前
面に導くことが可能となるものであり、従来品では実現
できなかった音像定位および音声の明瞭度の向上を図っ
た優れた音響特性を可能とし、かつ、音響管開口部寸法
の超スリム化をも実現とするものであり、ひいては、テ
レビジョン受像機のコンパクト化および高音質化が図れ
ることとなる。As described above, according to the present invention, an acoustic tube for guiding sound waves having a substantially rectangular opening is arranged in front of a speaker for mid-low range reproduction, and the speaker for mid-low range reproduction inside the acoustic tube. A high-frequency reproduction speaker is placed close to the front of the
By suppressing the center axis of the high-frequency reproduction speaker from the center axis of the mid- and low-frequency reproduction speaker and using a pseudo-coaxial structure, the attenuation of the mid- and high-frequency components reproduced from the mid- and low-frequency reproduction speaker is suppressed. In addition, the high-frequency components reproduced by the high-frequency reproduction speakers arranged close to each other can be guided to the front surface of the opening of the acoustic tube as an acoustic signal synthesized in a state close to natural. Yes, it enables excellent acoustic characteristics with improved sound image localization and clarity of voice, which could not be achieved with conventional products, and also realizes ultra-slim acoustic tube opening dimensions. Therefore, the television receiver can be made compact and the sound quality can be improved.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例におけるスピーカ装置の構成
を部分断面して示した斜視図FIG. 1 is a perspective view showing a configuration of a speaker device according to an embodiment of the present invention with a partial cross section thereof.

【図２】本発明の音響管を用いたスピーカ装置をテレビ
ジョン受像機に内蔵したときの音圧周波数特性図FIG. 2 is a sound pressure frequency characteristic diagram when a speaker device using the acoustic tube of the present invention is built in a television receiver.

【図３】従来の音響管を用いて構成した中低域再生用ス
ピーカ装置と高域再生用スピーカとを併用して構成され
たテレビジョン受像機の斜視図FIG. 3 is a perspective view of a television receiver configured by using a speaker device for mid- and low-frequency reproduction and a speaker for high-frequency reproduction that are both configured using a conventional acoustic tube.

【図４】従来の音響管を用いたスピーカ装置をテレビジ
ョン受像機に内蔵したときの音圧周波数特性図FIG. 4 is a sound pressure frequency characteristic diagram when a speaker device using a conventional acoustic tube is built in a television receiver.

【符号の説明】 １ 中低域再生用スピーカ ２ 音響管 ５ 開口部 ６ 高域再生用スピーカ ８ 中低域再生用スピーカの音波を導くための空洞 ９ 反射板 １０ 吸音材 １１，１２ 反射板 １３ 中低域再生用スピーカの中高域成分の音波を導く
ための音導 １４ 本発明の音響管を用いたスピーカ装置をテレビジ
ョン受像機に内蔵したときの音圧周波数特性図 Ａ 高域再生用スピーカの中心軸 Ｂ 中低域再生用スピーカの中心軸[Explanation of Codes] 1 speaker for middle and low range reproduction 2 acoustic tube 5 opening 6 speaker for high range reproduction 8 cavity for guiding sound waves of speaker for middle and low range reproduction 9 reflection plate 10 sound absorbing material 11, 12 reflection plate 13 Speaker for mid-low frequency reproduction Sound guiding for guiding sound waves of mid-high frequency component 14 Sound pressure frequency characteristic diagram when a speaker device using the acoustic tube of the present invention is built in a television receiver A High-frequency reproduction speaker Center axis B Center axis of the speaker for mid-low range reproduction

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】中低域再生用スピーカの前面に開口部がほ
ぼ矩形形状の音波を導く音響管を配置し、この音響管の
内部の中低域再生用スピーカの前面部に高域再生用スピ
ーカを近接配置すると共に、この高域再生用スピーカの
中心軸と中低域再生用スピーカの中心軸とが一致しない
構成とし疑似同軸構造としたスピーカ装置。1. An acoustic tube for guiding a sound wave having a substantially rectangular opening is arranged on the front surface of a speaker for mid- and low-frequency reproduction, and high-frequency reproduction is provided on the front surface of the speaker for mid- and low-frequency reproduction inside the acoustic tube. A speaker device having a pseudo-coaxial structure in which the central axes of the high-frequency reproduction speaker and the central low-frequency reproduction speaker are not aligned with each other, with the speakers arranged close to each other. 【請求項２】請求項１記載のスピーカ装置を内蔵したテ
レビジョン受像機。2. A television receiver incorporating the speaker device according to claim 1.