JPH06178375A - Speaker - Google Patents

Speaker

Info

Publication number
JPH06178375A
JPH06178375A JP32663192A JP32663192A JPH06178375A JP H06178375 A JPH06178375 A JP H06178375A JP 32663192 A JP32663192 A JP 32663192A JP 32663192 A JP32663192 A JP 32663192A JP H06178375 A JPH06178375 A JP H06178375A
Authority
JP
Japan
Prior art keywords
speaker
sound
acoustic
acoustic path
box
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.)
Pending
Application number
JP32663192A
Other languages
Japanese (ja)
Inventor
Shiro Koga
士朗 古賀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP32663192A priority Critical patent/JPH06178375A/en
Publication of JPH06178375A publication Critical patent/JPH06178375A/en
Pending legal-status Critical Current

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  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To make a low-frequency sound reproducing characteristic satisfactory by phase inverting a sound emitted from one side of a speaker and that emitted from the other side of the speaker and synthesizing them near the terminal part of an acoustic path. CONSTITUTION:The sound emitted from the front side of the speaker 4 is guided to the acoustic path 6 to reach the terminal of the acoustic path 6 and on the other hand, the sound emitted to the inside of a speaker housing box is phase inverted by a bass-reflex port 10. Then the phase-inverted sound and the front sound guided to the acoustic path 6 are synthesized and emitted from acoustic mouths 2 and 3. Then, the inside of a flat box 1 is separated into the acoustic path 6 and a box 7 to synchronize the sound from the box 7 near the acoustic paths 2 and 3 to emit it outside so that the speaker of a good low-frequency sound reproducing characteristic is obtained. Besides, the low-frequency reproducing characteristic is not damaged even when the capacity of the inside of a flat box 1 is small so that the speaker is miniaturized and its low-frequency sound reproducing characteristic becomes satisfactory.

Description

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

【0001】[0001]

【産業上の利用分野】この発明は、低音再生用スピーカ
ーに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bass reproduction speaker.

【0002】[0002]

【従来の技術】図6aおよび図6bは例えば公開昭64
−15492号公報に示された従来のスピーカー装置を
示す平面図と側面図であり、図において、1は平面ボッ
クス、2、3は音響口、4はスピーカー、5は壁板、6
は音響路である。スピーカー4は、上面が閉蓋された平
面ボックス1に収納され、スピーカー4の音は壁板5に
よって仕切られた音響路6に導かれ、音響口2、3より
外部へ放射される。
2. Description of the Related Art FIGS.
15 is a plan view and a side view showing a conventional speaker device disclosed in Japanese Patent Laid-Open No. 15492, in which, 1 is a flat box, 2 is a sound port, 4 is a speaker, 5 is a wall plate, and 6 is a wall plate.
Is an acoustic path. The speaker 4 is housed in the flat box 1 having a closed top surface, and the sound of the speaker 4 is guided to the acoustic path 6 partitioned by the wall plate 5 and radiated to the outside through the acoustic ports 2 and 3.

【0003】[0003]

【発明が解決しようとする課題】従来の装置では、スピ
ーカーの再生音圧特性の山、谷となる周波数は、ほぼ音
響路の路長で決まり、路長をL、音速をv、n番目の
山、谷の周波数を各々fpn、fdnとすると、 L≒(2n−1)v/4fpn L≒nv/2fdn となる周波数で著しい山谷が生じ、低音再生スピーカー
として周波数特性が良くないという問題点があった。ま
た、低音再生スピーカーは、小型化でき難いという問題
点があった。
In the conventional device, the frequencies of the peaks and valleys of the reproduced sound pressure characteristic of the speaker are determined almost by the path length of the acoustic path, and the path length is L, the sound velocity is v, and the sound velocity is n. If the frequencies of the peak and the valley are fpn and fdn, respectively, L = (2n-1) v / 4fpn L = nv / 2fdn. there were. In addition, there is a problem that it is difficult to downsize the bass reproduction speaker.

【0004】本発明は上記のような問題点を解消するた
めになされたもので、良好な低音再生特性を有するスピ
ーカー装置を得ることを目的とする。また、低音特性が
良く、小型のスピーカー装置を得ることを目的とする。
The present invention has been made to solve the above problems, and an object of the present invention is to obtain a speaker device having good bass reproduction characteristics. Further, another object of the present invention is to obtain a small speaker device having good bass characteristics.

【0005】[0005]

【課題を解決するための手段】本発明に係るスピーカー
装置は、スピーカーと、このスピーカーの一方の音の放
射面に一端が連通した音響路と、この音響路の他端部に
配置され外部へ音を放射する音響口と、スピーカーの他
方の音の放射面からの音を位相反転して音響口近くの音
響路に放射するバスレフポートとを備えたものである。
A speaker device according to the present invention includes a speaker, an acoustic path whose one end communicates with one sound emitting surface of the speaker, and an acoustic path arranged at the other end of the acoustic path to the outside. It is provided with a sound port that radiates sound and a bass reflex port that phase-inverts the sound from the other sound radiating surface of the speaker and radiates the sound to the acoustic path near the sound port.

【0006】また、本発明に係るスピーカー装置は、平
面ボックスと、この平面ボックス内に設けられたスピー
カー収納ボックスと、このスピーカー収納ボックスに収
納されたスピーカーと、このスピーカーから放射された
音を導く屈曲した音響路と、この音響路の端部の近くに
設けられ外部へ音を放射する音響口と、スピーカーのス
ピーカー収納ボックスからの音を位相反転して音響口近
くの音響路に放射するバスレフポートとを備えたもので
ある。
Also, the speaker device according to the present invention guides a flat box, a speaker housing box provided in the flat box, a speaker housed in the speaker housing box, and a sound emitted from the speaker. A curved acoustic path, an acoustic port that is provided near the end of this acoustic channel and emits sound to the outside, and a bass reflex that inverts the sound from the speaker storage box of the speaker and emits it to the acoustic path near the acoustic channel. And a port.

【0007】[0007]

【作用】本発明におけるスピーカー装置は、音響路にほ
ぼ依存する谷となる周波数帯の音圧低下を、バスレフポ
ートが補うように作用し、良好な低音再生を得ることを
可能にする。また、平面ボックス内に屈曲した長い音響
路とスピーカー収納ボックスとを設けているので小型化
できる。
The speaker device according to the present invention makes it possible for the bass reflex port to compensate for the sound pressure drop in the frequency band, which is a valley that substantially depends on the acoustic path, and to obtain good bass reproduction. Further, since the curved long acoustic path and the speaker storage box are provided in the flat box, the size can be reduced.

【0008】[0008]

【実施例】実施例1.以下、本発明の一実施例を図につ
いて説明する。図1aおよび図1bにおいて、平面ボッ
クス1は、隔壁板8で音響路6とスピーカー収納ボック
ス7に仕切られ、スピーカー収納ボックス7の一面は音
響路6の路面の一部を構成している。9は音響路6の終
端部の路面を構成するスピーカー収納ボックス面で、バ
スレフポート10を設けている。
EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1A and 1B, the flat box 1 is partitioned into a sound path 6 and a speaker storage box 7 by a partition plate 8, and one surface of the speaker storage box 7 constitutes a part of the road surface of the sound path 6. Reference numeral 9 denotes a speaker housing box surface that constitutes a road surface at the end of the acoustic path 6, and is provided with a bass reflex port 10.

【0009】スピーカー4の前方から放射された音は、
音響路6に導かれ音響路6の終端に達し、一方、スピー
カー収納ボックス7内に放射された音は、バスレフポー
ト10により位相反転され、音響路6に導かれた前面の
音と合成され、音響口2、3から放射される。
The sound radiated from the front of the speaker 4 is
The sound that is guided to the acoustic path 6 and reaches the end of the acoustic path 6, while being radiated into the speaker storage box 7, is phase-inverted by the bass reflex port 10 and is combined with the front sound that is guided to the acoustic path 6. It is emitted from the acoustic mouths 2 and 3.

【0010】図2はその低音再生特性を示すもので、図
中の点線は従来のスピーカー装置による低音再生特性を
示し、音響路長にほぼ依存する山、谷が生じている。鎖
線はバスレフポートより放射される低音再生特性を示
し、この点線と鎖線とを合成したものが実線で、本発明
によるスピーカー装置の低音再生特性である。この実線
で示すように、バスレフポート10からの音によって、
谷となる周波数帯を補い良好な低音再生特性が得られ
る。
FIG. 2 shows the bass reproduction characteristic. The dotted line in the figure shows the bass reproduction characteristic of the conventional speaker device, and the peaks and valleys that substantially depend on the acoustic path length are generated. The chain line shows the bass reproduction characteristic radiated from the bass reflex port, and the solid line is the combination of the dotted line and the chain line, which is the bass reproduction characteristic of the speaker device according to the present invention. As shown by this solid line, the sound from the bass reflex port 10
A good bass reproduction characteristic is obtained by compensating for the frequency band that becomes a valley.

【0011】上記のように、この発明のスピーカー装置
は、平面ボックス1内を音響路6と収納ボックス7に区
分し、スピーカー収納ボックス7からの音をバスレフポ
ートを通じて音響路の終端部にある音響口2、3の近く
で、音響路6からの音と合成して外部へ放射するように
したので、低音再生特性の良いスピーカー装置が得られ
る。また、平面ボックス1内の容積が小さくても低音再
生特性が損なわれないので、小型で低音再生特性の良い
スピーカー装置が得られる。従って、車載用のスピーカ
ー装置として最適である。
As described above, in the speaker device of the present invention, the inside of the flat box 1 is divided into the acoustic path 6 and the storage box 7, and the sound from the speaker storage box 7 is transmitted to the acoustic path at the end of the acoustic path through the bass reflex port. Since the sound from the acoustic path 6 is synthesized near the mouths 2 and 3 and emitted to the outside, a speaker device having good bass reproduction characteristics can be obtained. Further, even if the volume in the flat box 1 is small, the bass reproduction characteristic is not impaired, so that a speaker device having a small size and excellent bass reproduction characteristic can be obtained. Therefore, it is most suitable as a vehicle-mounted speaker device.

【0012】実施例2.図3a、図3bおよび図3c
は、図1の変形例を示す平面図と側面断面図で、平形ボ
ックスの上面から音を放射するようにしたスピーカー装
置である。スピーカー収納ボックス7を下方に、音響路
6を上方に設け、音響路6に導かれた音とバスレフポー
ト10からの音が合成されて、平面ボックス1の上面に
設けた音響口2からその合成音が放射される。
Example 2. 3a, 3b and 3c
FIG. 3 is a speaker device in which a sound is radiated from the upper surface of a flat box in a plan view and a side sectional view showing a modification of FIG. 1. The speaker housing box 7 is provided on the lower side and the acoustic path 6 is provided on the upper side. The sound guided to the acoustic path 6 and the sound from the bass reflex port 10 are synthesized, and the sound is emitted from the acoustic mouth 2 provided on the upper surface of the flat box 1. Sound is emitted.

【0013】実施例3.図4a、図4bおよび図4c
は、図3の変形例を示す平面図と側面断面図で、図3と
内部構造はほぼ同一で、音響口を平面ボックスの側面に
一箇所設けたものである。スピーカー収納ボックス7を
下方に、音響路6を上方に設け、音響路6に導かれた音
とバスレフポート10からの音が合成されて、平面ボッ
クス1の側面に設けた音響口2からその合成音が放射さ
れる。
Embodiment 3. 4a, 4b and 4c
3A and 3B are a plan view and a side sectional view showing a modified example of FIG. 3, in which the internal structure is almost the same as that of FIG. The speaker housing box 7 is provided on the lower side, the acoustic path 6 is provided on the upper side, and the sound guided to the acoustic path 6 and the sound from the bass reflex port 10 are synthesized, and the sound is emitted from the acoustic mouth 2 provided on the side surface of the flat box 1. Sound is emitted.

【0014】実施例4.上記の実施例では、平面ボック
スとして、立方体のボックスであったが、上方から見て
円形のもの、即ち、円柱形のボックスとしてもよい。こ
の場合、音響路は、例えば、渦巻状にして円形の中心部
にスピーカーを置き、渦巻状の音響路の終端部を音響口
とする。スピーカー収納ボックスは円柱形の下方に置
き、音響路の終端部の近くにバスレフポートを設けて、
スピーカー収納ボックスからの音をこのバスレフポート
を通じて、音響路からの音と合成して音響口から放射す
る。
Example 4. In the above embodiment, the plane box is a cubic box, but it may be a circular box when viewed from above, that is, a cylindrical box. In this case, for example, the acoustic path is formed in a spiral shape and a speaker is placed at the center of the circular shape, and the end portion of the spiral acoustic path serves as the acoustic mouth. Place the speaker storage box at the bottom of the cylinder, and provide a bass reflex port near the end of the acoustic path.
The sound from the speaker storage box is combined with the sound from the acoustic path through this bass reflex port and emitted from the acoustic mouth.

【0015】また、円柱形のほかに、5角形、6角形や
その他の多角形でもよい。更に、デザイン等を考慮し
て、バイオリンやギターの胴の形状のもの、グランドピ
アノの胴の形状のものなど、ユニークな形状のものにし
て商品価値を上げるようにしてもよい。
In addition to the cylindrical shape, a pentagonal shape, a hexagonal shape, or another polygonal shape may be used. Further, in consideration of the design and the like, a product having a unique shape such as a violin or a guitar body shape or a grand piano body shape may be used to increase the commercial value.

【0016】実施例5.スピーカー装置のボックスは、
上記の実施例4のほかに、図5のようなものでもよい。
図において、ボックス12の内部に、音響路6が上下に
折り返して形成されていて、この音響路6からの音と、
スピーカー収納ボックス7からバスレフポート10を通
じての音とが合成され、音響口2から外部へ放射され
る。この実施例のものは、細長い外形の割に低音特性が
良いので床面積を少なくでき、また、デザインも良いの
で、小さな部屋での低音の再生などに好適である。
Example 5. The speaker device box is
In addition to the above-described fourth embodiment, the one shown in FIG. 5 may be used.
In the figure, an acoustic path 6 is formed by folding back up and down inside a box 12, and sound from this acoustic path 6
The sound from the speaker storage box 7 and the sound from the bass reflex port 10 are combined and radiated from the acoustic opening 2 to the outside. This embodiment is suitable for low-pitched sound reproduction in a small room because it has a good low-pitched sound property in spite of its slender outer shape and thus can reduce the floor area and has a good design.

【0017】なお、ボックスの形状は上記に限るもので
なく、例えば、音響路をパイプ状のもので形成し、この
パイプ状の一端部にスピーカーを取り付け、他端部を音
響口とし、音響口の近くにバスレフポートを取り付ける
と共に、パイプ状の音響路を曲げてその他端部をスピー
カーの近傍にもっていき、スピーカー背面からの音がそ
のバスレフポートに通ずるようなダクトを設けることに
より、低音再生特性の良いスビーカー装置が得られる。
このようなスピーカー装置は遊びの要素も加えることが
できる。このように、この発明のスピーカー装置は種々
の形状のものが実現できる。
The shape of the box is not limited to the above. For example, the acoustic path is formed in the shape of a pipe, a speaker is attached to one end of this pipe, and the other end serves as an acoustic mouth. Bass reflex port is installed near the speaker, the pipe-shaped acoustic path is bent to bring the other end to the vicinity of the speaker, and a duct that allows the sound from the back of the speaker to reach the bass reflex port is provided. A good beaker device can be obtained.
Such a speaker device can also add a play element. Thus, the speaker device of the present invention can be realized in various shapes.

【0018】実施例6.上記の実施例では、スピーカー
の前面の音の放射面を音響路と接続し、スピーカーの背
面の音の放射面をバスレフポートに通じるように接続し
たが、スピーカーの取付を逆にして、スピーカーの前面
の音の放射面をバスレフポート側に通じるようにし、ス
ピーカーの背面の音の放射面を音響路に接続するように
してもよい。
Example 6. In the above embodiment, the sound emitting surface on the front of the speaker was connected to the acoustic path, and the sound emitting surface on the back of the speaker was connected to the bass reflex port, but the speaker was installed in the reverse direction. The sound emission surface on the front side may be connected to the bass reflex port side, and the sound emission surface on the back side of the speaker may be connected to the acoustic path.

【0019】[0019]

【発明の効果】以上のように、本発明によればスピーカ
ーの片方から放射される音を、音響路へ導き、スピーカ
ーの他方から放射される音をバスレフポートで位相反転
して、音響路の終端部の近くで音響路からの音と合成
し、音響口から放射するようにしたので、低音再生特性
の良いスピーカー装置が得られる。
As described above, according to the present invention, the sound radiated from one side of the speaker is guided to the acoustic path, the sound radiated from the other side of the speaker is phase-inverted by the bass reflex port, and Since the sound from the acoustic path is synthesized in the vicinity of the terminal end and is emitted from the acoustic mouth, a speaker device with good bass reproduction characteristics can be obtained.

【0020】また、本発明によれば、平面ボックス内に
音響路とバスレフポートを有するスピーカー収納ボック
スとを内蔵させたので、低音再生特性が良い上に、小型
のスピーカー装置が得られる。
Further, according to the present invention, since the acoustic path and the speaker storage box having the bass reflex port are built in the flat box, the bass reproduction characteristic is excellent and a small speaker device can be obtained.

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

【図1】この発明の実施例1によるスピーカー装置を示
す正面図、およびそのb−b線側面断面図。
FIG. 1 is a front view showing a speaker device according to a first embodiment of the present invention and a side sectional view taken along line bb thereof.

【図2】この発明のスピーカー装置と従来のスピーカー
装置の低音再生特性図。
FIG. 2 is a bass reproduction characteristic diagram of the speaker device of the present invention and the conventional speaker device.

【図3】この発明の実施例2を示す平面図、およびその
b−b線ならびにc−c線側面断面図。
FIG. 3 is a plan view showing a second embodiment of the present invention, and a side cross-sectional view of a line bb and a line cc thereof.

【図4】この発明の実施例3を示す平面図、およびその
b−b線ならびにc−c線側面断面図。
FIG. 4 is a plan view showing a third embodiment of the present invention and a side sectional view taken along line bb and cc thereof.

【図5】この発明の実施例5を示す側面断面図。FIG. 5 is a side sectional view showing a fifth embodiment of the present invention.

【図6】従来のスピーカー装置の平面図、およびそのb
−b線側面断面図。
FIG. 6 is a plan view of a conventional speaker device and its b.
-B line side sectional view.

【符号の説明】[Explanation of symbols]

1 平面ボックス 2,3 音響口 4 スピーカー 5 壁板 6 音響路 7 スピーカー収納ボックス 8 隔壁板 9 スピーカー収納ボックス面 10 バスレフポート 12 ボックス 1 plane box 2,3 acoustic mouth 4 speaker 5 wall board 6 acoustic path 7 speaker storage box 8 partition board 9 speaker storage box surface 10 bass reflex port 12 box

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 スピーカーと、このスピーカーの一方の
音の放射面に一端が連通した音響路と、この音響路の他
端部に配置され外部へ音を放射する音響口と、上記スピ
ーカーの他方の音の放射面からの音を位相反転して上記
音響口近くの音響路に放射するバスレフポートとを備え
たスピーカー装置。
1. A speaker, an acoustic path whose one end communicates with a sound emitting surface of one of the speakers, an acoustic port arranged at the other end of the acoustic path for emitting sound to the outside, and the other of the speakers. A speaker device having a bass reflex port that inverts the phase of the sound from the sound emission surface and emits the sound to the acoustic path near the acoustic mouth.
【請求項2】 平面ボックスと、この平面ボックス内に
設けられたスピーカー収納ボックスと、このスピーカー
収納ボックスに収納されたスピーカーと、このスピーカ
ーから放射された音を導く屈曲した音響路と、この音響
路の端部の近くに設けられ外部へ音を放射する音響口
と、上記スピーカーの上記スピーカー収納ボックスから
の音を位相反転して上記音響口近くの音響路に放射する
バスレフポートとを備えたスピーカー装置。
2. A flat box, a speaker housing box provided in the flat box, a speaker housed in the speaker housing box, a bent acoustic path for guiding a sound radiated from the speaker, and the sound. An acoustic port provided near the end of the path for emitting sound to the outside, and a bass reflex port for inverting the phase of the sound from the speaker storage box of the speaker and emitting to the acoustic path near the acoustic port. Speaker device.
JP32663192A 1992-12-07 1992-12-07 Speaker Pending JPH06178375A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32663192A JPH06178375A (en) 1992-12-07 1992-12-07 Speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32663192A JPH06178375A (en) 1992-12-07 1992-12-07 Speaker

Publications (1)

Publication Number Publication Date
JPH06178375A true JPH06178375A (en) 1994-06-24

Family

ID=18189955

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32663192A Pending JPH06178375A (en) 1992-12-07 1992-12-07 Speaker

Country Status (1)

Country Link
JP (1) JPH06178375A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6973994B2 (en) 2002-11-04 2005-12-13 Mackin Ian J Apparatus for increasing the quality of sound from an acoustic source
JP2007512756A (en) * 2003-11-25 2007-05-17 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Electroacoustic apparatus having an electroacoustic transducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6973994B2 (en) 2002-11-04 2005-12-13 Mackin Ian J Apparatus for increasing the quality of sound from an acoustic source
JP2007512756A (en) * 2003-11-25 2007-05-17 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Electroacoustic apparatus having an electroacoustic transducer

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