JP2525784Y2 - Speaker device - Google Patents
Speaker deviceInfo
- Publication number
- JP2525784Y2 JP2525784Y2 JP1989138102U JP13810289U JP2525784Y2 JP 2525784 Y2 JP2525784 Y2 JP 2525784Y2 JP 1989138102 U JP1989138102 U JP 1989138102U JP 13810289 U JP13810289 U JP 13810289U JP 2525784 Y2 JP2525784 Y2 JP 2525784Y2
- Authority
- JP
- Japan
- Prior art keywords
- box
- speaker
- opening
- speaker device
- diaphragm
- 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 - Lifetime
Links
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
Description
【考案の詳細な説明】 〔考案の目的〕 （産業上の利用分野） この考案は、テレビジョン受像機等の電気機器に使用
されるスピーカ装置に関し、特に低音再生特性を向上す
るようにしたものである。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a speaker device used for an electric device such as a television receiver, and particularly to a speaker device having improved bass reproduction characteristics. It is.
（従来の技術） 従来のスピーカ装置は、第４図及び第５図に示すよう
にボックス（密閉箱）１の前面バッフル２にスピーカ３
を取り付けた構造が一般的である。(Prior Art) As shown in FIGS. 4 and 5, a conventional speaker device includes a speaker 3 on a front baffle 2 of a box (closed box) 1.
Is generally used.
このようなスピーカ装置の低音再生特性は、スピーカ
３の振動板３′が充分柔らかく支持されているとすれ
ば、次式で与えられる。The bass reproduction characteristic of such a speaker device is given by the following equation, assuming that the diaphragm 3 'of the speaker 3 is sufficiently softly supported.
ここに、fOB；最低共振周波数 mO；振動系の等価質量 CO；振動板から見た密閉箱１のコンプライア
ンス 最低共振周波数fOBが、上記（１）式で決定されると
すると、より一層低い音を再生するためには、振動系の
等価質量mOを増加させるか、あるいはコンプライアンス
COを大きくするしかない。 Here, f OB ; minimum resonance frequency m O ; equivalent mass of the vibration system C O ; compliance of the closed box 1 as viewed from the diaphragm Assuming that the minimum resonance frequency f OB is determined by the above equation (1), To reproduce a lower sound, increase the equivalent mass m O of the vibrating system or adjust the compliance.
The only option is to increase C O.
ところが、密閉箱１のコンプライアンスCOを大きくす
ることは密閉箱１の容積を大きくすることであり、一方
振動系の等価質量mOを増加させることは能率を低下させ
る原因となる。したがって、上記いずれの方法をとって
も小型化，軽量化が要求される最近のスピーカ装置には
不都合である。さらに、上記のようなシステムでは、不
要な高域特性があり、これを減衰させるためにスピーカ
の入力信号径路に電気的なフィルターを設ける必要があ
った。However, increasing the compliance C O of the closed box 1 is to increase the volume of the closed box 1, while increasing the equivalent mass m O of the vibrating system causes a reduction in efficiency. Therefore, any of the above methods is inconvenient for a recent speaker device that requires a reduction in size and weight. Further, in the above-mentioned system, there is an unnecessary high-frequency characteristic, and in order to attenuate this, it is necessary to provide an electric filter in the input signal path of the speaker.
（考案が解決しようとする課題） このように従来の低音用スピーカ装置は、不要な高域
特性を減衰することが困難で、そのため電気的な特性補
正フィルターが必要となるという欠点があった。(Problems to be Solved by the Invention) As described above, the conventional bass speaker device has a disadvantage that it is difficult to attenuate unnecessary high-frequency characteristics, and therefore, an electric characteristic correction filter is required.
この考案は上記問題を解決し、小型で低音特性の優れ
たスピーカ装置の提供を目的とする。The purpose of the present invention is to solve the above-mentioned problem and to provide a small-sized speaker device having excellent bass characteristics.
（課題を解決するための手段） この考案は、筒状を成す密閉形ボックスと、 前記ボックスの側面に設けた開孔と、 振動板を有し、前記振動板の前面が前記開孔側を向く
ように前記ボックス内に取り付けることにより、該ボッ
クスを２つのキャビティーに区分し、前記振動板の前面
からの音を前記開孔を介して放出するようにしたスピー
カと、 前記ボックスの外周に沿って設けられ、一端が前記開
孔に結合し、この開孔からの音を他端から放出するよう
にした音響ダクトを具備したことを特徴とするスピーカ
装置である。(Means for Solving the Problems) The present invention has a closed box having a cylindrical shape, an opening provided on a side surface of the box, and a diaphragm, and a front surface of the diaphragm is arranged so that a front side of the opening corresponds to the opening side. A speaker which is divided into two cavities by being mounted inside the box so as to face, and a speaker which emits sound from the front surface of the diaphragm through the opening, A speaker device comprising: an acoustic duct provided along the one end, one end of which is connected to the opening, and the sound from the opening is emitted from the other end.
（作用） このような構成によれば、ボックス側面に設けたダク
トが低域波フィルターとなり、スピーカの不要高域特
性を減衰させ良好な低音再生を行うことができる。(Operation) According to such a configuration, the duct provided on the side surface of the box serves as a low-pass filter, so that unnecessary high-frequency characteristics of the speaker can be attenuated and good bass reproduction can be performed.
（実施例） 以下、この考案を図示の実施例について説明する。(Embodiment) Hereinafter, the present invention will be described with reference to an illustrated embodiment.
第１図はこの考案に係るスピーカ装置の一実施例を示
し一部切り欠いた斜視図である。また、第２図は同分解
斜視図である。FIG. 1 is a partially cutaway perspective view showing an embodiment of the speaker device according to the present invention. FIG. 2 is an exploded perspective view of the same.
本スピーカ装置は、第１図に示すように、円筒状に形
成した密閉ボックス11を用いる。密閉ボックス11は、筒
内径にエッジを合わせてスピーカ13が収納され、振動板
の前面側キャビティ14と、裏面側キャビティ15とが形成
される。キャビティ15は密閉構造とし、前面側のキャビ
ティ14はボックス11の長手方向に形成した開孔12を開け
ている。開孔12には、ボックス11に沿って湾曲したダク
ト16が取付けられている。As shown in FIG. 1, the present speaker device uses a closed box 11 formed in a cylindrical shape. In the closed box 11, a speaker 13 is housed with its edge aligned with the inner diameter of the cylinder, and a front cavity 14 and a rear cavity 15 of the diaphragm are formed. The cavity 15 has a closed structure, and the cavity 14 on the front side has an opening 12 formed in the longitudinal direction of the box 11. A duct 16 that is curved along the box 11 is attached to the opening 12.
このような構成のスピーカ装置は、例えば第２図に示
すように、スピーカ13を取付けた有底円筒体11aと、開
孔12を形成した有底円筒体11bとを突合わせて一体化
し、開孔12にダクト16を取付けることで作製される。そ
して、ダクト16は、低域通過形音響フィルターとして働
き、スピーカの不要高域特性を減衰させる。この場合、
ダクト16はボックス11の円形筒状に沿って湾曲している
ため、外側大径部と内側小径部で定在波が異なり、共振
が抑えられる。これによって、歪の発生が低減され、良
質な低音再生特性が実現される。As shown in FIG. 2, for example, as shown in FIG. 2, a bottomed cylindrical body 11a to which a speaker 13 is mounted and a bottomed cylindrical body 11b having an opening 12 are integrated by abutting and unifying. It is manufactured by attaching a duct 16 to the hole 12. The duct 16 functions as a low-pass acoustic filter, and attenuates unnecessary high-frequency characteristics of the speaker. in this case,
Since the duct 16 is curved along the circular cylindrical shape of the box 11, standing waves are different between the outer large diameter portion and the inner small diameter portion, and resonance is suppressed. As a result, generation of distortion is reduced, and high-quality bass reproduction characteristics are realized.
第３図の実線波形Ａは本装置の周波数特性を示す。従
来の密閉形スピーカの特性を示す点線波形Ｂは、高域特
性を有するが、波形Ａは、低域だけを通過する特性で、
ダクト16の効果が理解される。The solid line waveform A in FIG. 3 shows the frequency characteristics of the present apparatus. The dotted line waveform B indicating the characteristics of the conventional sealed speaker has a high-frequency characteristic, while the waveform A is a characteristic that passes only the low frequency,
The effect of the duct 16 is understood.
こうして、上記実施例のスピーカ装置は、電気的な低
域波フィルターが不要となる。Thus, the speaker device of the above embodiment does not require an electric low-pass filter.
以上説明したように本考案によれば、ボックスの最低
共振周波数を簡単な機械的構成により下げることがで
き、小型で歪みの少ない低音再生特性を実現する。As described above, according to the present invention, the minimum resonance frequency of the box can be reduced by a simple mechanical configuration, and a low-frequency sound reproduction characteristic with small size and low distortion is realized.
第１図はこの考案に係るスピーカ装置の実施例を一部切
り欠いて示す斜視図、第２図は第１図の分解斜視図、第
３図は本件スピーカ装置の周波数特性を示す特性図、第
４図及び第５図は従来のスピーカ装置を示す断面図及び
斜視図である。 11……ボックス、12……開孔、13……スピーカ、14,15
……キャビティ、16……ダクト。FIG. 1 is a partially cutaway perspective view showing an embodiment of the speaker device according to the present invention, FIG. 2 is an exploded perspective view of FIG. 1, FIG. 3 is a characteristic diagram showing frequency characteristics of the present speaker device, 4 and 5 are a sectional view and a perspective view showing a conventional speaker device. 11 ... box, 12 ... aperture, 13 ... speaker, 14, 15
…… cavities, 16 …… ducts.
Claims (1)
うに前記ボックス内に取り付けることにより、該ボック
スを２つのキャビティーに区分し、前記振動板の前面か
らの音を前記開孔を介して放出するようにしたスピーカ
と、 前記ボックスの外周に沿って設けられ、一端が前記開孔
に結合し、この開孔からの音を他端から放出するように
した音響ダクトを具備したことを特徴とするスピーカ装
置。1. A closed box having a cylindrical shape, an opening provided on a side surface of the box, and a diaphragm, and the diaphragm is mounted in the box so that a front surface of the diaphragm faces the opening. Thereby, the box is divided into two cavities, a speaker configured to emit sound from the front surface of the diaphragm through the opening, and a speaker is provided along the outer periphery of the box, and one end is provided along the outer periphery of the box. A speaker device comprising: an acoustic duct that is coupled to an opening and emits sound from the opening from the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989138102U JP2525784Y2 (en) | 1989-11-30 | 1989-11-30 | Speaker device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989138102U JP2525784Y2 (en) | 1989-11-30 | 1989-11-30 | Speaker device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0377581U JPH0377581U (en) | 1991-08-05 |
| JP2525784Y2 true JP2525784Y2 (en) | 1997-02-12 |
Family
ID=31685230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989138102U Expired - Lifetime JP2525784Y2 (en) | 1989-11-30 | 1989-11-30 | Speaker device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2525784Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6127262U (en) * | 1984-07-19 | 1986-02-18 | 三菱電機株式会社 | Laser diode drive circuit |
| JPS6261590U (en) * | 1985-10-01 | 1987-04-16 |
-
1989
- 1989-11-30 JP JP1989138102U patent/JP2525784Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0377581U (en) | 1991-08-05 |
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