JP2018056747A - Passive radiator mounting type speaker - Google Patents

Passive radiator mounting type speaker Download PDF

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JP2018056747A
JP2018056747A JP2016189356A JP2016189356A JP2018056747A JP 2018056747 A JP2018056747 A JP 2018056747A JP 2016189356 A JP2016189356 A JP 2016189356A JP 2016189356 A JP2016189356 A JP 2016189356A JP 2018056747 A JP2018056747 A JP 2018056747A
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passive radiator
housing
speaker
reflecting member
plate
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知彦 桑原
Tomohiko Kuwabara
知彦 桑原
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Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
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Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a heavy bass sound more powerful than the prior art to a listener sitting on a front panel side of a passive radiator mounting type speaker that has passive radiators provided back to back on opposite surfaces of a housing of the speaker.SOLUTION: The present invention relates to a passive radiator mounting type speaker 1 comprising: a first passive radiator 21 and a second passive radiator 22 resonating by using vibration of air inside a housing 10 of the speaker that are provided back to back on respective opposite surfaces 11 and 12 of the housing 10; and a reflection member 40 that is provided at a position facing the second passive radiator 22 provided on one surface 12 of the opposite surfaces in an outer direction with an interval.SELECTED DRAWING: Figure 1

Description

本発明は、パッシブラジエータを搭載したスピーカに関する。   The present invention relates to a speaker equipped with a passive radiator.

一般的に、小型のスピーカでは低音を出しにくいため、効果的に低音を出す方法として、バスレフ方式や、パッシブラジエータ方式などが知られている。パッシブラジエータとは、スピーカユニットから電磁気回路を取り除き、スピーカの筐体内の空気振動を利用して動作させるスピーカユニットをいう。パッシブラジエータは、一定の周波数で共振し、主に低音域の増幅及び補強を行うことによって迫力のある重低音を出すことができることから、小型のポータブルスピーカなどに用いられている（例えば、特許文献１を参照）。   In general, since a small speaker is difficult to produce a low sound, a bass reflex method, a passive radiator method, or the like is known as a method for producing a low sound effectively. The passive radiator refers to a speaker unit that is operated by removing the electromagnetic circuit from the speaker unit and utilizing air vibration in the speaker housing. A passive radiator resonates at a constant frequency, and can produce a powerful heavy bass by mainly amplifying and reinforcing a low frequency range, and thus is used for a small portable speaker or the like (for example, Patent Documents). 1).

図７は、従来から公知のパッシブラジエータを搭載したスピーカの前方斜視図（７Ａ）および後方斜視図（７Ｂ）をそれぞれ示す。   FIG. 7 shows a front perspective view (7A) and a rear perspective view (7B) of a speaker equipped with a conventionally known passive radiator, respectively.

図７に示す従来のパッシブラジエータ搭載型スピーカ１００は、筐体１０１の開口側に、パッシブラジエータ１２１と、正面視にてパッシブラジエータ１２１を挟んで左右両側にスピーカユニット１３１，１３１を備えた前面パネル１１１を備える。パッシブラジエータ搭載型スピーカ１００は、前面パネル１１１と反対側（裏側）に、後面パネル１１２を備える。後面パネル１１２は、前面パネル１１１側のパッシブラジエータ１２１と対向する位置に、同形態のパッシブラジエータ１２２を備える。このように、パッシブラジエータ搭載型スピーカ１００は、筐体１０１の表裏背合わせにて、各１個のパッシブラジエータ１２１，１２２を備える。   A conventional passive radiator-mounted speaker 100 shown in FIG. 7 has a front panel including a passive radiator 121 on the opening side of a housing 101 and speaker units 131 and 131 on both left and right sides of the passive radiator 121 in front view. 111. The passive radiator-mounted speaker 100 includes a rear panel 112 on the opposite side (back side) from the front panel 111. The rear panel 112 includes a passive radiator 122 having the same configuration at a position facing the passive radiator 121 on the front panel 111 side. As described above, the passive radiator-mounted speaker 100 includes one passive radiator 121 and 122, respectively, in a case where the casing 101 is face to back.

特開２００９−２３２０４０号公報JP 2009-2332040 A

しかし、上記のような構造を持つパッシブラジエータ搭載型スピーカ１００は、次のような課題を有している。それは、パッシブラジエータ搭載型スピーカ１００を広い空間に置き、前面パネル１１１側にて音響を聞く場合に、後面パネル１１２側のパッシブラジエータ１２２からの音が背面側に逃げてしまい、前面パネル１１１側の聴者の耳に入りにくくなるという問題である。この結果、重低音の音量が不足してしまう。   However, the passive radiator-mounted speaker 100 having the above-described structure has the following problems. That is, when the passive radiator mounted speaker 100 is placed in a wide space and the sound is heard on the front panel 111 side, the sound from the passive radiator 122 on the rear panel 112 side escapes to the rear side, and the front panel 111 side The problem is that it is difficult for the listener to enter the ear. As a result, the volume of heavy bass is insufficient.

本発明は、上記課題を解決するためになされたものであって、スピーカの筐体の対向面に背合わせにてパッシブラジエータを備えるパッシブラジエータ搭載型スピーカの前面パネル側に位置する聴者に、従来よりも迫力のある重低音を提供することを目的とする。   The present invention has been made in order to solve the above-described problems, and has been proposed for a listener positioned on the front panel side of a passive radiator-mounted speaker having a passive radiator back to back on the opposite surface of the speaker housing. The purpose is to provide a more powerful deep bass.

上記目的を達成するための一実施の形態に係るパッシブラジエータ搭載型スピーカは、スピーカの筐体内の空気振動を利用して共振する第１パッシブラジエータおよび第２パッシブラジエータをそれぞれ筐体の対向面に背合わせに備え、対向面の内の一方の面に備える第２パッシブラジエータと外方向に間隔をあけて対向する位置に反射部材を備える。   In order to achieve the above object, a passive radiator-mounted speaker according to an embodiment includes a first passive radiator and a second passive radiator that resonate using air vibration in a speaker housing, on opposite surfaces of the housing. In preparation for back-to-back, a reflecting member is provided at a position facing the second passive radiator provided on one of the opposing surfaces with an interval in the outward direction.

別の実施の形態に係るパッシブラジエータ搭載型スピーカでは、さらに、反射部材は、第２パッシブラジエータを覆う第１位置から、第２パッシブラジエータから離れる第２位置まで往復可動であっても良い。   In the passive radiator-mounted speaker according to another embodiment, the reflecting member may be reciprocally movable from a first position covering the second passive radiator to a second position away from the second passive radiator.

別の実施の形態に係るパッシブラジエータ搭載型スピーカでは、また、反射部材は、一方の面に平行な平行反射板を備えても良い。   In the passive radiator mounted speaker according to another embodiment, the reflecting member may include a parallel reflecting plate parallel to one surface.

別の実施の形態に係るパッシブラジエータ搭載型スピーカでは、また、反射部材は、第２パッシブラジエータからの音を、筐体の左側および右側にそれぞれ反射させる左側反射板および右側反射板を備えても良い。   In the passive radiator mounted speaker according to another embodiment, the reflecting member may include a left reflecting plate and a right reflecting plate that reflect the sound from the second passive radiator to the left and right sides of the housing, respectively. good.

別の実施の形態に係るパッシブラジエータ搭載型スピーカでは、また、反射部材は、第２パッシブラジエータからの音を、筐体の上側に反射させる上側反射板を備えても良い。   In the passive radiator mounted speaker according to another embodiment, the reflection member may include an upper reflection plate that reflects sound from the second passive radiator to the upper side of the housing.

別の実施の形態に係るパッシブラジエータ搭載型スピーカでは、さらに、反射部材は、第２パッシブラジエータからの音を、筐体の下側に反射させる下側反射板を備えても良い。   In the passive radiator mounted speaker according to another embodiment, the reflecting member may further include a lower reflector that reflects the sound from the second passive radiator to the lower side of the housing.

本発明によれば、スピーカの筐体の対向面に背合わせにてパッシブラジエータを備えるパッシブラジエータ搭載型スピーカの前面パネル側に位置する聴者に、従来よりも迫力のある重低音を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the deep bass which has a force stronger than before can be provided to the listener located in the front panel side of the passive radiator mounting type speaker provided with a passive radiator back to back on the opposing surface of the speaker housing.

図１は、第１実施形態に係るパッシブラジエータ搭載型スピーカの後面パネル側から後方に向かって反射部材を引き出した状態の前方斜視図（１Ａ）、当該反射部材を引き出した状態の後方斜視図（１Ｂ）、当該反射部材を後面パネルに向かって収納した状態の前方斜視図（１Ｃ）および当該反射部材を後面パネルに向かって収納した状態の後方斜視図（１Ｄ）を、それぞれ示す。FIG. 1 is a front perspective view (1A) of a state in which a reflecting member is pulled out rearward from the rear panel side of the passive radiator mounted speaker according to the first embodiment, and a rear perspective view of a state in which the reflecting member is pulled out ( 1B), a front perspective view (1C) in a state in which the reflecting member is accommodated toward the rear panel, and a rear perspective view (1D) in a state in which the reflective member is accommodated toward the rear panel. 図２は、図１のスピーカの前面パネルの長さ方向略中央部分にて切断した状態における第１パッシブラジエータの断面構造を示す。FIG. 2 shows a cross-sectional structure of the first passive radiator in a state where the front panel of the speaker shown in FIG. 図３は、第２実施形態に係るパッシブラジエータ搭載型スピーカの反射部材を後面パネルに向かって収納した状態の後方斜視図（３Ａ）、当該反射部材を後方に引き出した状態の後方斜視図（３Ｂ）、（３Ｂ）の状態から左側反射板および右側反射板の各角度を変化させた状態の後方斜視図（３Ｃ）を、それぞれ示す。FIG. 3 is a rear perspective view (3A) of the passive radiator mounted speaker according to the second embodiment in a state in which the reflective member is housed toward the rear panel, and a rear perspective view of the state in which the reflective member is pulled out rearward (3B). ), (3B) shows a rear perspective view (3C) in a state where the angles of the left reflector and the right reflector are changed. 図４は、第３実施形態に係るパッシブラジエータ搭載型スピーカの反射部材を後面パネルに向かって収納した状態の後方斜視図（４Ａ）、当該反射部材を後方に引き出した状態の後方斜視図（４Ｂ）、（４Ｂ）の状態から上側反射板の角度を変化させた状態の後方斜視図（４Ｃ）を、それぞれ示す。FIG. 4 is a rear perspective view (4A) in a state in which the reflecting member of the passive radiator mounted speaker according to the third embodiment is housed toward the rear panel, and a rear perspective view in a state in which the reflecting member is pulled out rearward (4B). ) And (4B) are respectively rear perspective views (4C) in a state where the angle of the upper reflector is changed. 図５は、第４実施形態に係るパッシブラジエータ搭載型スピーカの後方に向かって反射部材を引き出した状態の前方斜視図（５Ａ）、当該反射部材を引き出した状態の後方斜視図（５Ｂ）、当該反射部材を後面パネルに向かって収納した状態の前方斜視図（５Ｃ）および当該反射部材を後面パネルに向かって収納した状態の後方斜視図（５Ｄ）を、それぞれ示す。FIG. 5 is a front perspective view (5A) of a state in which the reflecting member is pulled out toward the rear of the passive radiator mounted speaker according to the fourth embodiment, a rear perspective view of the state in which the reflecting member is pulled out (5B), A front perspective view (5C) in a state where the reflecting member is stored toward the rear panel and a rear perspective view (5D) in a state where the reflecting member is stored toward the rear panel are shown. 図６は、第５実施形態に係るパッシブラジエータ搭載型スピーカの後方に向かって反射部材を引き出した状態の前方斜視図（６Ａ）、当該反射部材を引き出した状態の後方斜視図（６Ｂ）、当該反射部材を後面パネルに向かって収納した状態の前方斜視図（６Ｃ）および当該反射部材を後面パネルに向かって収納した状態の後方斜視図（６Ｄ）を、それぞれ示す。FIG. 6 is a front perspective view (6A) in a state in which the reflecting member is pulled out toward the rear of the passive radiator mounted speaker according to the fifth embodiment, a rear perspective view (6B) in a state in which the reflecting member is pulled out, A front perspective view (6C) in a state where the reflecting member is stored toward the rear panel and a rear perspective view (6D) in a state where the reflecting member is stored toward the rear panel are shown. 図７は、従来から公知のパッシブラジエータを搭載したスピーカの前方斜視図（７Ａ）および後方斜視図（７Ｂ）をそれぞれ示す。FIG. 7 shows a front perspective view (7A) and a rear perspective view (7B) of a speaker equipped with a conventionally known passive radiator, respectively.

以下、本発明に係るパッシブラジエータ搭載型スピーカの各実施形態について、図面を参照しながら説明する。   Embodiments of a passive radiator-mounted speaker according to the present invention will be described below with reference to the drawings.

（第１実施形態）
図１は、第１実施形態に係るパッシブラジエータ搭載型スピーカの後面パネル側から後方に向かって反射部材を引き出した状態の前方斜視図（１Ａ）、当該反射部材を引き出した状態の後方斜視図（１Ｂ）、当該反射部材を後面パネルに向かって収納した状態の前方斜視図（１Ｃ）および当該反射部材を後面パネルに向かって収納した状態の後方斜視図（１Ｄ）を、それぞれ示す。 (First embodiment)
FIG. 1 is a front perspective view (1A) of a state in which a reflecting member is pulled out rearward from the rear panel side of the passive radiator mounted speaker according to the first embodiment, and a rear perspective view of a state in which the reflecting member is pulled out ( 1B), a front perspective view (1C) in a state in which the reflecting member is accommodated toward the rear panel, and a rear perspective view (1D) in a state in which the reflective member is accommodated toward the rear panel.

パッシブラジエータ搭載型スピーカ（以後、単に「スピーカ」という）１は、略直方体形状であってその内部に空間を備える筐体１０を備える。筐体１０は、筐体１０の六面の内の一つの面（ここでは、「前面」ともいう）に備える前面パネル１１と、前面パネル１１と対向する面（ここでは、「後面」ともいう）に備える後面パネル１２と、を備える。筐体１０の主要材料としては、ポリアミド、ポリプロピレン、ポリエチレンテレフタレート、アクリル樹脂、ポリブチレンテレフタレート、ポリカーボネート、ポリフェニレンサルファイド、ＡＢＳ樹脂などを好適に例示できる。上記樹脂の内で特に好ましい樹脂はポリカーボネートである。また、筐体１０は、ガラスファイバーやカーボンファイバーなどを上記樹脂内に分散させたＦＲＰで構成しても良い。さらには、筐体１０をアルミニウム等の金属あるいは木材で構成しても良い。以後の各実施形態でも同様である。   A passive radiator-mounted speaker (hereinafter simply referred to as “speaker”) 1 includes a housing 10 having a substantially rectangular parallelepiped shape and having a space therein. The housing 10 includes a front panel 11 provided on one of the six surfaces of the housing 10 (herein, also referred to as “front surface”), and a surface (here, referred to as “rear surface”) that faces the front panel 11. And a rear panel 12 provided for). Preferable examples of the main material of the housing 10 include polyamide, polypropylene, polyethylene terephthalate, acrylic resin, polybutylene terephthalate, polycarbonate, polyphenylene sulfide, and ABS resin. Among the above resins, a particularly preferable resin is polycarbonate. The housing 10 may be made of FRP in which glass fiber, carbon fiber, or the like is dispersed in the resin. Further, the housing 10 may be made of metal such as aluminum or wood. The same applies to the subsequent embodiments.

前面パネル１１は、前面パネル１１に向かって正面視にて、略中央部分に第１パッシブラジエータ２１を、第１パッシブラジエータ２１の左右両側に各１個のスピーカユニット３１，３１を、それぞれ搭載する。第１パッシブラジエータ２１およびスピーカユニット３１，３１は、前面パネル１１の貫通孔にて、音を出力する側を外方向にするように埋め込まれている。   The front panel 11 is mounted with a first passive radiator 21 at a substantially central portion and one speaker unit 31, 31 on each of the left and right sides of the first passive radiator 21 in a front view toward the front panel 11. . The first passive radiator 21 and the speaker units 31 and 31 are embedded in the through-hole of the front panel 11 so that the sound output side faces outward.

一方、後面パネル１２は、後面パネル１２に向かって正面視にて、略中央部分に第２パッシブラジエータ２２を搭載する。第２パッシブラジエータ２２は、後面パネル１２の貫通孔にて、音を出力する側を外方向にするように埋め込まれている。第１実施形態およびこれ以降の各実施形態では、第２パッシブラジエータ２２は、第１パッシブラジエータ２１と略同一形状を有する。ただし、第２パッシブラジエータ２２は、第１パッシブラジエータ２１と異なる大きさ、形状または構造を持つものでも良い。第１パッシブラジエータ２１および第２パッシブラジエータ２２は、共に、スピーカ１の筐体１０内の空気振動を利用して共振するスピーカユニットである。スピーカ１は、第１パッシブラジエータ２１および第２パッシブラジエータ２２をそれぞれ筐体１０の対向面に背合わせに備えている。なお、第１パッシブラジエータ２１および第２パッシブラジエータ２２の構成については、後述する。   On the other hand, the rear panel 12 is mounted with a second passive radiator 22 at a substantially central portion in a front view toward the rear panel 12. The second passive radiator 22 is embedded in the through hole of the rear panel 12 so that the sound output side faces outward. In the first embodiment and the subsequent embodiments, the second passive radiator 22 has substantially the same shape as the first passive radiator 21. However, the second passive radiator 22 may have a size, shape, or structure different from that of the first passive radiator 21. Both the first passive radiator 21 and the second passive radiator 22 are speaker units that resonate using air vibration in the housing 10 of the speaker 1. The speaker 1 includes a first passive radiator 21 and a second passive radiator 22 on the opposite surfaces of the housing 10 in a back-to-back manner. The configurations of the first passive radiator 21 and the second passive radiator 22 will be described later.

スピーカ１は、第２パッシブラジエータ２２と外方向に間隔をあけて対向する位置に反射部材４０を備える。反射部材４０は、好ましくは、第２パッシブラジエータ２２を覆う第１位置から、第２パッシブラジエータ２２から後方に離れる第２位置まで往復可動となっている。反射部材４０は、略Ｌ字形状の板状部材であって、後面パネル１２に平行な平行反射板４１と、スピーカ１の底面に収納および引出可動な略水平の底板４２とを略直角に接続して成る。反射部材４０を第１位置に移動した際には、底板４２は、筐体１０の底部とほぼ重なった状態となる。また、平行反射板４１は、第２パッシブラジエータ２２を覆い、後面パネル１２に接する状態になる。平行反射板４１は、第２パッシブラジエータ２２を完全に覆うように、第２パッシブラジエータ２２よりも広い面積を有する板であるのが好ましい。   The speaker 1 includes a reflecting member 40 at a position facing the second passive radiator 22 with an interval in the outward direction. The reflecting member 40 is preferably reciprocally movable from a first position covering the second passive radiator 22 to a second position away from the second passive radiator 22. The reflecting member 40 is a substantially L-shaped plate-like member, and connects a parallel reflecting plate 41 parallel to the rear panel 12 and a substantially horizontal bottom plate 42 that can be housed and pulled out on the bottom surface of the speaker 1 at a substantially right angle. It consists of When the reflecting member 40 is moved to the first position, the bottom plate 42 is substantially overlapped with the bottom of the housing 10. In addition, the parallel reflector 41 covers the second passive radiator 22 and comes into contact with the rear panel 12. The parallel reflecting plate 41 is preferably a plate having a larger area than the second passive radiator 22 so as to completely cover the second passive radiator 22.

反射部材４０を第２位置に移動した際には、底板４２は、筐体１０の底部から後方へと引き出された状態となる。また、平行反射板４１は、第２パッシブラジエータ２２と略平行を維持したまま、後面パネル１２から所定距離だけ離れた状態になる。この結果、第２パッシブラジエータ２２から出力される音は、平行反射板４１に到達後、平行反射板４１で反射されて、前方に回り込み、前面パネル１１と向かい合っている聴者の耳に伝わる。反射部材４０の主要材料としては、上述した筐体１０の主要材料の候補から選択できる。反射部材４０は、好ましくは、共振しにくい材料から構成される。平行反射板４１は、第２パッシブラジエータ２２との対向面に、ゴム、フェルト、スポンジあるいは紙を貼り付けて、特定の周波数の音をカットした反射音を得るようにしても良い。反射部材４０の上記の材料あるいは構成については、以後の各実施形態における各種反射部材４０ａ，４０ｂ，４０ｃ，４０ｄにおいても同様である。   When the reflecting member 40 is moved to the second position, the bottom plate 42 is pulled out from the bottom of the housing 10 to the rear. Further, the parallel reflector 41 is in a state of being separated from the rear panel 12 by a predetermined distance while being substantially parallel to the second passive radiator 22. As a result, the sound output from the second passive radiator 22 reaches the parallel reflection plate 41, is reflected by the parallel reflection plate 41, wraps forward, and is transmitted to the listener's ear facing the front panel 11. The main material of the reflecting member 40 can be selected from the candidates for the main material of the casing 10 described above. The reflecting member 40 is preferably made of a material that does not easily resonate. The parallel reflection plate 41 may obtain a reflected sound obtained by cutting a sound of a specific frequency by attaching rubber, felt, sponge, or paper to the surface facing the second passive radiator 22. The above-described material or configuration of the reflecting member 40 is the same in various reflecting members 40a, 40b, 40c, and 40d in the following embodiments.

反射部材４０は、筐体１０から分離可能に構成されていても良く、その場合、底板４２を筐体１０の底部から抜ける構成を有していても良い。また、反射部材４０は、筐体１０から容易に分離できないように構成されていても良く、その場合、底板４２に、筐体１０の底部に底板４２の先端部分を保持するためのストッパーを備えても良い。反射部材４０は、平行反射板４１と第２パッシブラジエータ２２との距離を調整可能に構成されているため、当該距離の調整によって、反射音の出力を変化させ、もって聴者に好みの音色を出力させることができる。   The reflecting member 40 may be configured to be separable from the housing 10, and in that case, the reflecting member 40 may have a configuration in which the bottom plate 42 is removed from the bottom of the housing 10. Further, the reflecting member 40 may be configured so as not to be easily separated from the housing 10, and in that case, the bottom plate 42 is provided with a stopper for holding the tip portion of the bottom plate 42 at the bottom of the housing 10. May be. Since the reflecting member 40 is configured so that the distance between the parallel reflector 41 and the second passive radiator 22 can be adjusted, the output of the reflected sound is changed by adjusting the distance, and the favorite tone color is output to the listener. Can be made.

図２は、図１のスピーカの前面パネルの長さ方向略中央部分にて切断した状態における第１パッシブラジエータの断面構造を示す。   FIG. 2 shows a cross-sectional structure of the first passive radiator in a state where the front panel of the speaker shown in FIG.

ここでは、第１パッシブラジエータ２１および前面パネル１１の各構造を説明する。なお、第２パッシブラジエータ２２は、第１パッシブラジエータ２１と同一構造であるため、ここでは、第１パッシブラジエータの構造についてのみ説明し、重複説明を省略する。また、図２は、スピーカユニット３１，３１を外した状態を示す。以後の各実施形態でも、第１パッシブラジエータ２１および前面パネル１１の以下の内容は同様である。   Here, each structure of the 1st passive radiator 21 and the front panel 11 is demonstrated. Since the second passive radiator 22 has the same structure as the first passive radiator 21, only the structure of the first passive radiator will be described here, and redundant description will be omitted. FIG. 2 shows a state in which the speaker units 31 are removed. In the following embodiments, the following contents of the first passive radiator 21 and the front panel 11 are the same.

第１パッシブラジエータ２１は、その内部略中央に配置される振動板５０と、その振動板５０の外周と前面パネル１１との間に形成されていて中空構造を持つ弾性フランジ５１と、を備える。振動板５０は、鉄、ステンレス鋼、タングステン鋼などの金属から成り、特に比重の大きな金属から成るのがより好ましい。弾性フランジ５１の構成材料としては、好ましくは、シリコーンゴム、ウレタンゴム、エチレンプロピレンゴム、ブチルゴム、エチレンプロピレンジエンゴム、ニトリルゴムを挙げることができる。また、弾性フランジ５１を、エステル系、スチレン系、オレフィン系あるいはフッ素系等の熱可塑性エラストマーあるいはそれらの複合物等を用いて構成しても良い。それら材料の内、特に、シリコーンゴムが好ましい。第１パッシブラジエータ２１は、スピーカユニット３１，３１の振動に共振して、振動板５０を振動させる。振動板５０が正常に振動するためには、弾性フランジ５１は、振動板５０をしっかりと保持しつつ、振動板５０の振動を妨げずに自由に振動板５０を振動させる形態であることを要する。なお、弾性フランジ５１は、中空構造を持つものに限定されず、中実構造を持つものでも良い。   The first passive radiator 21 includes a diaphragm 50 disposed substantially at the center of the inside, and an elastic flange 51 formed between the outer periphery of the diaphragm 50 and the front panel 11 and having a hollow structure. The diaphragm 50 is made of a metal such as iron, stainless steel, or tungsten steel, and more preferably a metal having a large specific gravity. Preferably, the constituent material of the elastic flange 51 includes silicone rubber, urethane rubber, ethylene propylene rubber, butyl rubber, ethylene propylene diene rubber, and nitrile rubber. Further, the elastic flange 51 may be configured using a thermoplastic elastomer such as ester, styrene, olefin or fluorine, or a composite thereof. Of these materials, silicone rubber is particularly preferable. The first passive radiator 21 resonates with the vibration of the speaker units 31 and 31 and vibrates the diaphragm 50. In order for the diaphragm 50 to vibrate normally, the elastic flange 51 needs to be configured to freely vibrate the diaphragm 50 without disturbing the vibration of the diaphragm 50 while holding the diaphragm 50 firmly. . The elastic flange 51 is not limited to a hollow structure, and may have a solid structure.

弾性フランジ５１は、前面パネル１１の主要骨格を構成するパネル本体５４と振動板５０との間を接続する構成部である。弾性フランジ５１は、中空構造を持つ第１フランジ５２と、該第１フランジ５２よりもパネル本体５４側に位置する第２フランジ５３と、を備える。第１フランジ５２は、中空のリング形状を有する構成部であり、その内側を振動板５０に、その外側を第２フランジ５３に、それぞれ接続する。第２フランジ５３は、中実のリング形状を有する構成部であり、その内側を第１フランジ５２に、その外側をパネル本体５４に、それぞれ接続する。第１フランジ５２と第２フランジ５３は、細いループ状の領域で接続されている。このため、振動板５０は、第２フランジ５３に対して限りなくフリーの状態にて、筐体１０の開口面に対して前後方向に振動できる。   The elastic flange 51 is a component that connects between the panel main body 54 and the diaphragm 50 constituting the main skeleton of the front panel 11. The elastic flange 51 includes a first flange 52 having a hollow structure, and a second flange 53 positioned closer to the panel body 54 than the first flange 52. The first flange 52 is a component having a hollow ring shape, and the inside thereof is connected to the diaphragm 50 and the outside thereof is connected to the second flange 53. The second flange 53 is a component having a solid ring shape, and an inner side thereof is connected to the first flange 52 and an outer side thereof is connected to the panel main body 54. The first flange 52 and the second flange 53 are connected by a thin loop region. For this reason, the diaphragm 50 can vibrate in the front-rear direction with respect to the opening surface of the housing 10 in an infinitely free state with respect to the second flange 53.

前面パネル１１は、その外周囲に、シール部材５５を備える。シール部材５５は、筐体１０の開口部の内周縁部と前面パネル１１との隙間を無くし、前面パネル１１を筐体１０の開口部に密着させるのに寄与する。この結果、筐体１０内の空気の振動は、筐体１０の外部に漏れにくく、確実に第１パッシブラジエータ２１および第２パッシブラジエータ２２に伝わる。   The front panel 11 includes a seal member 55 on the outer periphery thereof. The seal member 55 eliminates the gap between the inner peripheral edge of the opening of the housing 10 and the front panel 11 and contributes to bringing the front panel 11 into close contact with the opening of the housing 10. As a result, the vibration of the air in the housing 10 is not easily leaked to the outside of the housing 10, and is reliably transmitted to the first passive radiator 21 and the second passive radiator 22.

（第２実施形態）
次に、第２実施形態に係るパッシブラジエータ搭載型スピーカについて説明する。第２実施形態において、第１実施形態と共通する部分については、第１実施形態における説明で代用し、重複した説明を省略する。 (Second Embodiment)
Next, a passive radiator mounted speaker according to the second embodiment will be described. In the second embodiment, portions common to the first embodiment are substituted with descriptions in the first embodiment, and duplicate descriptions are omitted.

図３は、第２実施形態に係るパッシブラジエータ搭載型スピーカの反射部材を後面パネルに向かって収納した状態の後方斜視図（３Ａ）、当該反射部材を後方に引き出した状態の後方斜視図（３Ｂ）、（３Ｂ）の状態から左側反射板および右側反射板の各角度を変化させた状態の後方斜視図（３Ｃ）を、それぞれ示す。   FIG. 3 is a rear perspective view (3A) of the passive radiator mounted speaker according to the second embodiment in a state in which the reflective member is housed toward the rear panel, and a rear perspective view of the state in which the reflective member is pulled out rearward (3B). ), (3B) shows a rear perspective view (3C) in a state where the angles of the left reflector and the right reflector are changed.

スピーカ１の筐体１０の内部および外表面の構成は、第１実施形態と共通する。スピーカ１は、第２パッシブラジエータ２２と外方向に間隔をあけて対向する位置に反射部材４０ａを備える。反射部材４０ａは、好ましくは、第２パッシブラジエータ２２を覆う第１位置から、第２パッシブラジエータ２２から後方に離れる第２位置まで往復可動となっている。反射部材４０ａは、略Ｌ字形状の板状部材であって、収納状態において第２パッシブラジエータ２２を覆うことのできる左側反射板６１および右側反射板６２を備える。なお、この実施形態および以後の各実施形態では、特に言及しない限り、後面パネル１２に向かって左側を「左側」と、右側を「右側」と、それぞれ称する。左側反射板６１は、その右辺の軸６４を中心に、少なくとも後方に向かって回動可能である。また、右側反射板６２は、その左辺の軸６５を中心に、少なくとも後方に向かって回動可能である。ここで、「少なくとも」であるから、左側反射板６１および／または右側反射板６２は、軸６４および／または軸６５を中心に後方にも前方にも回転自在であっても良い。   The configurations of the inside and the outer surface of the housing 10 of the speaker 1 are common to the first embodiment. The speaker 1 includes a reflecting member 40a at a position facing the second passive radiator 22 with an interval in the outward direction. The reflecting member 40 a is preferably reciprocally movable from a first position covering the second passive radiator 22 to a second position away from the second passive radiator 22. The reflecting member 40a is a substantially L-shaped plate-like member, and includes a left reflecting plate 61 and a right reflecting plate 62 that can cover the second passive radiator 22 in the housed state. In this embodiment and the following embodiments, the left side and the right side of the rear panel 12 are referred to as “left side” and “right side” unless otherwise specified. The left reflecting plate 61 is rotatable at least rearward about an axis 64 on the right side. Further, the right reflector 62 is rotatable at least rearward about the left-side axis 65. Here, since it is “at least”, the left reflecting plate 61 and / or the right reflecting plate 62 may be rotatable backward and forward around the shaft 64 and / or the shaft 65.

軸６４と軸６５は、好ましくは互いに近接して、左側反射板６１および右側反射板６２から形成される板の左右方向の略中央部分に略垂直に立設されている。軸６４と軸６５は、スピーカ１の底面に収納および引出可動な略水平の底板６３に対して、それぞれ回転可能に、略直角に接続して成る。底板６３は、第１実施形態の底板４２に相当する板である。反射部材４０ａを第１位置に移動した際には、底板６３は、筐体１０の底部とほぼ重なった状態となる。また、左側反射板６１および右側反射板６２は、第２パッシブラジエータ２２を覆い、後面パネル１２に接する状態になる。左側反射板６１および右側反射板６２からなる板は、第２パッシブラジエータ２２を完全に覆うように、第２パッシブラジエータ２２よりも広い面積を有する板であるのが好ましい。   The shaft 64 and the shaft 65 are preferably provided close to each other and substantially vertically provided at a substantially central portion in the left-right direction of the plate formed from the left reflecting plate 61 and the right reflecting plate 62. The shaft 64 and the shaft 65 are connected to a substantially horizontal bottom plate 63 that can be housed and pulled out on the bottom surface of the speaker 1 so as to be rotatable at substantially right angles. The bottom plate 63 is a plate corresponding to the bottom plate 42 of the first embodiment. When the reflecting member 40 a is moved to the first position, the bottom plate 63 is substantially overlapped with the bottom of the housing 10. Further, the left reflecting plate 61 and the right reflecting plate 62 cover the second passive radiator 22 and come into contact with the rear panel 12. The plate composed of the left reflector 61 and the right reflector 62 is preferably a plate having a larger area than the second passive radiator 22 so as to completely cover the second passive radiator 22.

反射部材４０ａを第２位置に移動した際には、底板６３は、筐体１０の底部から後方へと引き出された状態となる。また、左側反射板６１および右側反射板６２は、第２パッシブラジエータ２２と略平行を維持したまま、後面パネル１２から所定距離だけ離れた状態になる。この状態から、（３Ｃ）に示すように、左側反射板６１を、軸６４を中心として後方（すなわち、軸６４を上から見て時計の針と反対方向）に回転し、右側反射板６２を、軸６５を中心として後方（すなわち、軸６５を上から見て時計の針と同じ方向）に回転すると、第２パッシブラジエータ２２から出力される音は、左側反射板６１および右側反射板６２に到達後に反射され、筐体１０の左側および右側に回り込み、前面パネル１１と向かい合っている聴者の耳に伝わる。反射部材４０ａの主要材料としては、上述した筐体１０の主要材料の候補から選択できる。反射部材４０ａは、好ましくは、共振しにくい材料から構成される。左側反射板６１および右側反射板６２は、第２パッシブラジエータ２２との対向面に、ゴム、フェルト、スポンジあるいは紙を貼り付けて、特定の周波数の音をカットした反射音を得るようにしても良い。   When the reflecting member 40a is moved to the second position, the bottom plate 63 is pulled out from the bottom of the housing 10 to the rear. Further, the left reflecting plate 61 and the right reflecting plate 62 are separated from the rear panel 12 by a predetermined distance while being substantially parallel to the second passive radiator 22. From this state, as shown in (3C), the left reflecting plate 61 is rotated backward about the shaft 64 (that is, in the direction opposite to the hands of the watch when the shaft 64 is viewed from above), and the right reflecting plate 62 is rotated. , The sound output from the second passive radiator 22 is transmitted to the left reflector 61 and the right reflector 62 when the shaft 65 is rotated rearward (that is, in the same direction as the clock hand when the shaft 65 is viewed from above). After reaching, the light is reflected, goes around the left and right sides of the housing 10, and is transmitted to the ears of the listener facing the front panel 11. The main material of the reflecting member 40a can be selected from the candidates for the main material of the casing 10 described above. The reflecting member 40a is preferably made of a material that hardly resonates. The left reflecting plate 61 and the right reflecting plate 62 may be made by attaching rubber, felt, sponge or paper to the surface facing the second passive radiator 22 to obtain a reflected sound obtained by cutting a sound of a specific frequency. good.

反射部材４０ａは、筐体１０から分離可能に構成されていても良く、その場合、底板６３を筐体１０の底部から抜ける構成を有していても良い。また、反射部材４０ａは、筐体１０から容易に分離できないように構成されていても良く、その場合、底板６３に、筐体１０の底部に底板６３の先端部分を保持するためのストッパーを備えても良い。反射部材４０ａは、第２パッシブラジエータ２２からの音を、筐体１０の左側および右側にそれぞれ反射させる左側反射板６１および右側反射板６２を備える。さらに、左側反射板６１および右側反射板６２は、各角度を調整可能に構成されている。このため、スピーカ１は、第１実施形態の効果に加え、当該調整によって、反射音の回り込み経路を変化させることができ、もって、部屋の広さや、聴者とスピーカ１との距離等に応じて重低音の出力を変化させることができるという効果も奏する。   The reflecting member 40 a may be configured to be separable from the housing 10, and in that case, the reflecting member 40 a may have a configuration in which the bottom plate 63 is removed from the bottom of the housing 10. Further, the reflection member 40a may be configured so as not to be easily separated from the housing 10. In this case, the bottom plate 63 is provided with a stopper for holding the tip portion of the bottom plate 63 at the bottom of the housing 10. May be. The reflecting member 40 a includes a left reflecting plate 61 and a right reflecting plate 62 that reflect the sound from the second passive radiator 22 to the left and right sides of the housing 10, respectively. Further, the left reflecting plate 61 and the right reflecting plate 62 are configured such that the respective angles can be adjusted. For this reason, in addition to the effects of the first embodiment, the speaker 1 can change the sneak path of the reflected sound by the adjustment, and thus, according to the size of the room, the distance between the listener and the speaker 1, and the like. There is also an effect that the output of the heavy bass can be changed.

（第３実施形態）
次に、第３実施形態に係るパッシブラジエータ搭載型スピーカについて説明する。第３実施形態において、先の各実施形態と共通する部分については、先の各実施形態における説明で代用し、重複した説明を省略する。 (Third embodiment)
Next, a passive radiator mounted speaker according to a third embodiment will be described. In the third embodiment, portions common to the previous embodiments are substituted with descriptions in the previous embodiments, and redundant descriptions are omitted.

図４は、第３実施形態に係るパッシブラジエータ搭載型スピーカの反射部材を後面パネルに向かって収納した状態の後方斜視図（４Ａ）、当該反射部材を後方に引き出した状態の後方斜視図（４Ｂ）、（４Ｂ）の状態から上側反射板の角度を変化させた状態の後方斜視図（４Ｃ）を、それぞれ示す。   FIG. 4 is a rear perspective view (4A) in a state in which the reflecting member of the passive radiator mounted speaker according to the third embodiment is housed toward the rear panel, and a rear perspective view in a state in which the reflecting member is pulled out rearward (4B). ) And (4B) are respectively rear perspective views (4C) in a state where the angle of the upper reflector is changed.

スピーカ１の筐体１０の内部および外表面の構成は、第１実施形態と共通する。スピーカ１は、第２パッシブラジエータ２２と外方向に間隔をあけて対向する位置に反射部材４０ｂを備える。反射部材４０ｂは、好ましくは、第２パッシブラジエータ２２を覆う第１位置から、第２パッシブラジエータ２２から後方に離れる第２位置まで往復可動となっている。反射部材４０ｂは、略Ｌ字形状の板状部材であって、第１実施形態における反射部材４０と近似した構成を有する。反射部材４０ｂは、反射部材４０と異なり、第２パッシブラジエータ２２からの音を、筐体１０の上側に反射させる上側反射板７１を備えている。また、上側反射板７１は、底板７２（第１実施形態における底板４２に相当する板）に対して、直角の状態から少なくとも後方に向かって回転可能である。ここで、「少なくとも」であるから、上側反射板７１は、筐体１０側にも回転自在であっても良い。反射部材４０の平行反射板４１は底板４２に対して角度不変に固定されているが、反射部材４０ｂの上側反射板７１は、底板７２に対して角度可変に備えられている。この動作を実現するため、上側反射板７１は、略水平に伸びる軸７０を中心に回転可能に、底板７２に保持されている。上側反射板７１が好ましくは第２パッシブラジエータ２２より広い面積であるのが好ましい点、底板７２が筐体１０から容易に分離可能であっても容易に分離不能であっても良い点については、第１実施形態と共通する。上側反射板７１は、第２パッシブラジエータ２２との対向面に、ゴム、フェルト、スポンジあるいは紙を貼り付けて、特定の周波数の音をカットした反射音を得るようにしても良い。   The configurations of the inside and the outer surface of the housing 10 of the speaker 1 are common to the first embodiment. The speaker 1 includes a reflecting member 40b at a position facing the second passive radiator 22 with an interval in the outward direction. The reflecting member 40b is preferably reciprocally movable from a first position covering the second passive radiator 22 to a second position away from the second passive radiator 22. The reflection member 40b is a substantially L-shaped plate-like member, and has a configuration similar to that of the reflection member 40 in the first embodiment. Unlike the reflection member 40, the reflection member 40 b includes an upper reflection plate 71 that reflects the sound from the second passive radiator 22 to the upper side of the housing 10. Further, the upper reflection plate 71 is rotatable at least rearward from a right angle with respect to the bottom plate 72 (a plate corresponding to the bottom plate 42 in the first embodiment). Here, since it is “at least”, the upper reflecting plate 71 may be rotatable also on the housing 10 side. The parallel reflecting plate 41 of the reflecting member 40 is fixed to the bottom plate 42 so as not to change the angle, but the upper reflecting plate 71 of the reflecting member 40b is provided with a variable angle with respect to the bottom plate 72. In order to realize this operation, the upper reflecting plate 71 is held by the bottom plate 72 so as to be rotatable around a shaft 70 extending substantially horizontally. The upper reflector 71 preferably has a larger area than the second passive radiator 22, and the bottom plate 72 may be easily separable from the housing 10 or not separable. Common to the first embodiment. The upper reflecting plate 71 may be made to obtain a reflected sound obtained by cutting a sound of a specific frequency by attaching rubber, felt, sponge, or paper to the surface facing the second passive radiator 22.

反射部材４０ｂは、上側反射板７１を後方に回転させて、上側反射板７１の後面パネル１２と対向していた面を上側に向けることができ、かつその角度も調整自在である。このため、スピーカ１は、第１実施形態と同様の効果に加え、反射音の上方への回り込み経路を変化させることができ、もって、部屋の広さや、聴者とスピーカ１との距離等に応じて重低音の出力を変化させることができるという効果も奏する。   The reflecting member 40b can rotate the upper reflecting plate 71 rearward so that the surface facing the rear panel 12 of the upper reflecting plate 71 faces upward, and the angle thereof is also adjustable. For this reason, in addition to the effect similar to 1st Embodiment, the speaker 1 can change the wraparound path | route of reflected sound upwards, Therefore According to the area of a room, the distance of the listener and the speaker 1, etc. In addition, there is an effect that the output of the heavy bass can be changed.

（第４実施形態）
次に、第４実施形態に係るパッシブラジエータ搭載型スピーカについて説明する。第４実施形態において、先の各実施形態と共通する部分については、先の各実施形態における説明で代用し、重複した説明を省略する。 (Fourth embodiment)
Next, a passive radiator mounted speaker according to a fourth embodiment will be described. In the fourth embodiment, portions common to the previous embodiments are substituted with descriptions in the previous embodiments, and redundant descriptions are omitted.

図５は、第４実施形態に係るパッシブラジエータ搭載型スピーカの後方に向かって反射部材を引き出した状態の前方斜視図（５Ａ）、当該反射部材を引き出した状態の後方斜視図（５Ｂ）、当該反射部材を後面パネルに向かって収納した状態の前方斜視図（５Ｃ）および当該反射部材を後面パネルに向かって収納した状態の後方斜視図（５Ｄ）を、それぞれ示す。   FIG. 5 is a front perspective view (5A) of a state in which the reflecting member is pulled out toward the rear of the passive radiator mounted speaker according to the fourth embodiment, a rear perspective view of the state in which the reflecting member is pulled out (5B), A front perspective view (5C) in a state where the reflecting member is stored toward the rear panel and a rear perspective view (5D) in a state where the reflecting member is stored toward the rear panel are shown.

スピーカ１の筐体１０の内部および外表面の構成は、第１実施形態と共通する。スピーカ１は、第２パッシブラジエータ２２と外方向に間隔をあけて対向する位置に反射部材４０ｃを備える。反射部材４０ｃは、好ましくは、第２パッシブラジエータ２２を覆う第１位置から、第２パッシブラジエータ２２から後方に離れる第２位置まで往復可動となっている。反射部材４０ｃは、第１実施形態における反射部材４０と異なり略Ｌ字形状の板状部材ではない。反射部材４０ｃは、第１実施形態における平行反射板４１に相当する平行反射板８１と、平行反射板８１と後面パネル１２とを繋ぐロッド８２，８２とを備える。平行反射板８１は、第２パッシブラジエータ２２との対向面に、ゴム、フェルト、スポンジあるいは紙を貼り付けて、特定の周波数の音をカットした反射音を得るようにしても良い。ロッド８２，８２は、後面パネル１２から筐体１０の内部に向かって形成された穴８３，８３に挿入され、平行反射板８１と後面パネル１２との間の距離を変動自在に、穴８３，８３内を移動可能となっている。   The configurations of the inside and the outer surface of the housing 10 of the speaker 1 are common to the first embodiment. The speaker 1 includes a reflecting member 40c at a position facing the second passive radiator 22 with an interval in the outward direction. The reflecting member 40 c is preferably reciprocally movable from a first position covering the second passive radiator 22 to a second position away from the second passive radiator 22. Unlike the reflecting member 40 in the first embodiment, the reflecting member 40c is not a substantially L-shaped plate member. The reflection member 40 c includes a parallel reflection plate 81 corresponding to the parallel reflection plate 41 in the first embodiment, and rods 82 and 82 that connect the parallel reflection plate 81 and the rear panel 12. The parallel reflection plate 81 may be obtained by attaching a rubber, felt, sponge, or paper to the surface facing the second passive radiator 22 to obtain a reflected sound obtained by cutting a sound of a specific frequency. The rods 82, 82 are inserted into holes 83, 83 formed from the rear panel 12 toward the inside of the housing 10, so that the distance between the parallel reflector 81 and the rear panel 12 can be varied. 83 is movable.

このように、第１実施形態の底板４２に代えて、ロッド８２，８２を用いて、平行反射板８１を第２パッシブラジエータ２２と対向配置することができる。スピーカ１は、底板４２を備えていないので、第１実施形態と同様の効果に加え、第２パッシブラジエータ２２からの音を平行反射板８１にて反射した後、筐体１０の底部にも伝えることができるという効果も奏する。スピーカ１の底部を床に全面接触させないように設置すると、第２パッシブラジエータ２２からの音を筐体１０の底部をも経由させて、前面パネル１１側に位置する聴者の耳に伝えることができる。   Thus, instead of the bottom plate 42 of the first embodiment, the parallel reflection plate 81 can be disposed opposite to the second passive radiator 22 using the rods 82 and 82. Since the speaker 1 does not include the bottom plate 42, in addition to the same effects as those of the first embodiment, the sound from the second passive radiator 22 is reflected by the parallel reflection plate 81 and then transmitted to the bottom of the housing 10. There is also an effect of being able to. If the speaker 1 is installed so that the bottom of the speaker 1 does not come into full contact with the floor, the sound from the second passive radiator 22 can be transmitted to the ear of the listener located on the front panel 11 side via the bottom of the housing 10. .

（第５実施形態）
次に、第５実施形態に係るパッシブラジエータ搭載型スピーカについて説明する。第５実施形態において、先の各実施形態と共通する部分については、先の各実施形態における説明で代用し、重複した説明を省略する。 (Fifth embodiment)
Next, a passive radiator mounted speaker according to a fifth embodiment will be described. In the fifth embodiment, portions common to the previous embodiments are substituted with descriptions in the previous embodiments, and redundant descriptions are omitted.

図６は、第５実施形態に係るパッシブラジエータ搭載型スピーカの後方に向かって反射部材を引き出した状態の前方斜視図（６Ａ）、当該反射部材を引き出した状態の後方斜視図（６Ｂ）、当該反射部材を後面パネルに向かって収納した状態の前方斜視図（６Ｃ）および当該反射部材を後面パネルに向かって収納した状態の後方斜視図（６Ｄ）を、それぞれ示す。   FIG. 6 is a front perspective view (6A) in a state in which the reflecting member is pulled out toward the rear of the passive radiator mounted speaker according to the fifth embodiment, a rear perspective view (6B) in a state in which the reflecting member is pulled out, A front perspective view (6C) in a state where the reflecting member is stored toward the rear panel and a rear perspective view (6D) in a state where the reflecting member is stored toward the rear panel are shown.

スピーカ１の筐体１０の内部および外表面の構成は、第１実施形態と共通する。スピーカ１は、第２パッシブラジエータ２２と外方向に間隔をあけて対向する位置に反射部材４０ｄを備える。反射部材４０ｄは、好ましくは、第２パッシブラジエータ２２を覆う第１位置から、第２パッシブラジエータ２２から後方に離れる第２位置まで往復可動となっている。反射部材４０ｄは、第４実施形態における反射部材４０ｃと同様、底板４２に相当する板を備えておらず、ロッド９２，９２と、それらロッド９２，９２に接続された反射板９１とを備える。ロッド９２，９２は、後面パネル１２から筐体１０の内部に向かって形成された穴９３，９３に挿入され、反射板９１と後面パネル１２との間の距離を変動自在に、穴９３，９３内を移動可能となっている。   The configurations of the inside and the outer surface of the housing 10 of the speaker 1 are common to the first embodiment. The speaker 1 includes a reflecting member 40d at a position facing the second passive radiator 22 with an interval in the outward direction. The reflecting member 40d is preferably reciprocally movable from a first position covering the second passive radiator 22 to a second position away from the second passive radiator 22 to the rear. Similar to the reflection member 40c in the fourth embodiment, the reflection member 40d does not include a plate corresponding to the bottom plate 42 but includes rods 92 and 92 and a reflection plate 91 connected to the rods 92 and 92. The rods 92 and 92 are inserted into holes 93 and 93 formed from the rear panel 12 toward the inside of the housing 10 so that the distance between the reflector 91 and the rear panel 12 can be varied. It is possible to move inside.

反射板９１は、上側反射板９５と下側反射板９６とを上下方向に境界ライン９４で接続した屈曲形態の板である。上側反射板９５は、境界ライン９４の部分にて鉛直上方向から後方に傾斜させた斜め上向きの板である。下側反射板９６は、境界ライン９４の部分にて鉛直下方向から後方に傾斜させた斜め下向きの板である。上側反射板９５は、第２パッシブラジエータ２２からの音を、筐体１０の上側に反射させる板である。下側反射板９６は、第２パッシブラジエータ２２からの音を、筐体１０の下側に反射させる板である。上側反射板９５および下側反射板９６は、第２パッシブラジエータ２２との対向面に、ゴム、フェルト、スポンジあるいは紙を貼り付けて、特定の周波数の音をカットした反射音を得るようにしても良い。   The reflection plate 91 is a bent plate in which an upper reflection plate 95 and a lower reflection plate 96 are connected in a vertical direction with a boundary line 94. The upper reflecting plate 95 is a diagonally upward plate that is inclined backward from the vertically upward direction at the boundary line 94. The lower reflecting plate 96 is a diagonally downward plate that is inclined backward from the vertically downward direction at the boundary line 94. The upper reflecting plate 95 is a plate that reflects the sound from the second passive radiator 22 to the upper side of the housing 10. The lower reflector 96 is a plate that reflects the sound from the second passive radiator 22 to the lower side of the housing 10. The upper reflecting plate 95 and the lower reflecting plate 96 are made by attaching rubber, felt, sponge or paper on the surface facing the second passive radiator 22 so as to obtain a reflected sound in which the sound of a specific frequency is cut. Also good.

このように、スピーカ１は、底板４２を備えず、かつ上側反射板９５および下側反射板９６を備えているので、第２パッシブラジエータ２２からの音を両反射板９５，９６にて反射した後、筐体１０の上側および下側（＝底部）の両方向に効果的に伝えることができる。したがって、スピーカ１は、第１実施形態と同様の効果に加え、第４実施形態における平行反射板８１を備えた反射部材４０ｃと比して第２パッシブラジエータ２２からの反射音が筐体１０の影響を受けずに聴者側に容易に届くという効果も奏する。   Thus, since the speaker 1 does not include the bottom plate 42 and includes the upper reflection plate 95 and the lower reflection plate 96, the sound from the second passive radiator 22 is reflected by both the reflection plates 95 and 96. Thereafter, it can be effectively transmitted in both the upper side and the lower side (= bottom part) of the housing 10. Therefore, in addition to the same effects as those of the first embodiment, the speaker 1 has a reflected sound from the second passive radiator 22 of the casing 10 as compared with the reflecting member 40c having the parallel reflecting plate 81 in the fourth embodiment. There is also an effect that it can easily reach the listener without being affected.

（その他の実施形態）
以上、本発明の各実施形態に係るスピーカ１について説明したが、本発明は、これら実施形態に限定されず、種々変形を施して実施できる。 (Other embodiments)
The speaker 1 according to each embodiment of the present invention has been described above, but the present invention is not limited to these embodiments and can be implemented with various modifications.

上述の各実施形態に係るスピーカ１は、第１パッシブラジエータ２１および第２パッシブラジエータ２２をそれぞれ１個ずつ備えるが、第１パッシブラジエータ２１または第２パッシブラジエータ２２を複数個備えても良い。また、反射部材４０，４０ａ，４０ｂ，４０ｃ，４０ｄ（「反射部材４０等」という）は、筐体１０の第２パッシブラジエータ２２との距離を可変に構成されているが、第２パッシブラジエータ２２との距離を所定間隔に保持した状態で、筐体１０に固定されていても良い。ただし、反射部材４０等を筐体１０の後面パネル１２側に収納可能にする方が、スピーカ１の持ち運びの際に有利である。   The speaker 1 according to each of the embodiments described above includes one first passive radiator 21 and one second passive radiator 22, but may include a plurality of first passive radiators 21 or a plurality of second passive radiators 22. The reflecting members 40, 40 a, 40 b, 40 c, and 40 d (referred to as “reflecting member 40 etc.”) are configured such that the distance from the second passive radiator 22 of the housing 10 is variable, but the second passive radiator 22. May be fixed to the housing 10 in a state in which the distance between them is held at a predetermined interval. However, it is advantageous when carrying the speaker 1 that the reflecting member 40 or the like can be stored on the rear panel 12 side of the housing 10.

反射部材４０等は、後面パネル１２に最も近づいた位置（第１位置）から最も離れた位置（第２位置）まで無段階で距離を変えることができる。ただし、反射部材４０等を段階的にその距離を変えることのできる部材としても良い。また、左側反射板６１および右側反射板６２は、それぞれ軸６４および軸６５を中心として無段階で回転可能であるが、段階的にその角度を変えるようにしても良い。反射板９１は、上側反射板９５および下側反射板９６の鉛直方向に対する各角度を固定した板材であるが、第３実施形態における左側反射板６１および右側反射板６２と同様に、鉛直方向に対する各角度を変化自在としても良い。   The reflecting member 40 and the like can change the distance steplessly from the position closest to the rear panel 12 (first position) to the position farthest away (second position). However, the reflecting member 40 or the like may be a member whose distance can be changed step by step. Further, the left reflecting plate 61 and the right reflecting plate 62 can be rotated steplessly around the shaft 64 and the shaft 65, respectively, but the angles may be changed step by step. The reflection plate 91 is a plate material in which each angle with respect to the vertical direction of the upper reflection plate 95 and the lower reflection plate 96 is fixed. Like the left reflection plate 61 and the right reflection plate 62 in the third embodiment, the reflection plate 91 is in the vertical direction. Each angle may be freely changeable.

第４実施形態において、平行反射板８１をロッド８２，８２に対して固定せず、ロッド８２，８２に対して上方向および／または下方向に角度可変に構成しても良い。例えば、ロッド８２，８２の各先端にボールを備え、平行反射板８１に当該ボールを非固定で囲む凹部を備えることにより、当該角度可変な構成を実現できる。また、第５実施形態において、反射板９１をロッド９２，９２に対して固定せず、ロッド９２，９２に対して上方向および／または下方向に角度可変に構成しても良い。前述のように、ロッド９２，９２の各先端にボールを備え、反射板９１に当該ボールを非固定で囲む凹部を備えることにより、当該角度可変な構成を実現できる。   In the fourth embodiment, the parallel reflector 81 may not be fixed to the rods 82 and 82 but may be configured to be variable in angle to the rods 82 and 82 upward and / or downward. For example, by providing a ball at each tip of the rods 82 and 82 and providing the parallel reflector 81 with a recess surrounding the ball in a non-fixed manner, the variable angle configuration can be realized. Further, in the fifth embodiment, the reflecting plate 91 may be configured to be variable in an upward and / or downward direction with respect to the rods 92 and 92 without being fixed to the rods 92 and 92. As described above, by providing a ball at each end of the rods 92 and 92 and providing the reflecting plate 91 with a concave portion surrounding the ball in a non-fixed manner, a configuration with variable angle can be realized.

上述の各実施形態は、組み合わせ不可能な場合を除き、任意にそれらの構成の一部を組み合わせることができる。一例を挙げると、第１実施形態と第２実施形態とを組み合わせて、平行反射板４１と、左側反射板６１と、右側反射板６２とを備えた反射部材をスピーカ１に備えても良い。また、別の一例を挙げると、第２実施形態と第５実施形態とを組み合わせて、反射板９１（上側反射板９５と下側反射板９６から成る板）の左右に、左側反射板６１と、右側反射板６２とをそれぞれ備えた反射部材をスピーカ１に備えても良い。   In each of the above-described embodiments, a part of the configurations can be arbitrarily combined unless the combination is not possible. As an example, the speaker 1 may be provided with a reflecting member including the parallel reflecting plate 41, the left reflecting plate 61, and the right reflecting plate 62 by combining the first embodiment and the second embodiment. As another example, the left and right reflectors 61 and 61 are arranged on the left and right of the reflector 91 (a plate made of the upper reflector 95 and the lower reflector 96) by combining the second embodiment and the fifth embodiment. In addition, the speaker 1 may be provided with a reflecting member provided with the right reflecting plate 62.

本発明は、スピーカ、特に小型のスピーカに利用できる。   The present invention can be used for a speaker, particularly a small speaker.

１・・・スピーカ（パッシブラジエータ搭載型スピーカ）、１０・・・筐体、１１・・・前面パネル（対向面の一つ）、１２・・・後面パネル（対向面の一つであって、一方の面に相当）、２１・・・第１パッシブラジエータ、２２・・・第２パッシブラジエータ、４０，４０ａ，４０ｂ，４０ｃ，４０ｄ・・・反射部材、４１，８１・・・平行反射板、６１・・・左側反射板、６２・・・右側反射板、７１，９５・・・上側反射板、９６・・・下側反射板。 DESCRIPTION OF SYMBOLS 1 ... Speaker (passive radiator mounting type | mold speaker), 10 ... Case, 11 ... Front panel (one of the opposing surfaces), 12 ... Rear panel (One of the opposing surfaces, Equivalent to one surface), 21 ... first passive radiator, 22 ... second passive radiator, 40, 40a, 40b, 40c, 40d ... reflective member, 41, 81 ... parallel reflector, 61 ... Left reflector, 62 ... Right reflector, 71, 95 ... Upper reflector, 96 ... Lower reflector.

Claims (6)

スピーカの筐体内の空気振動を利用して共振する第１パッシブラジエータおよび第２パッシブラジエータをそれぞれ前記筐体の対向面に背合わせに備えるパッシブラジエータ搭載型スピーカであって、
前記対向面の内の一方の面に備える前記第２パッシブラジエータと外方向にて間隔をあけて対向する位置に反射部材を備えるパッシブラジエータ搭載型スピーカ。 A passive radiator-mounted speaker comprising a first passive radiator and a second passive radiator that resonate by utilizing air vibration in a housing of the speaker, respectively, on opposite surfaces of the housing.
A passive radiator-mounted loudspeaker comprising a reflective member at a position facing the second passive radiator provided on one of the opposing surfaces with an interval in the outward direction. 前記反射部材は、前記第２パッシブラジエータを覆う第１位置から、前記第２パッシブラジエータから離れる第２位置まで往復可動である請求項１に記載のパッシブラジエータ搭載型スピーカ。   2. The passive radiator-mounted speaker according to claim 1, wherein the reflecting member is reciprocally movable from a first position covering the second passive radiator to a second position away from the second passive radiator. 前記反射部材は、前記一方の面に平行な平行反射板を備える請求項１または請求項２に記載のパッシブラジエータ搭載型スピーカ。   The passive radiator-mounted speaker according to claim 1, wherein the reflecting member includes a parallel reflecting plate parallel to the one surface. 前記反射部材は、前記第２パッシブラジエータからの音を、前記筐体の左側および右側にそれぞれ反射させる左側反射板および右側反射板を備える請求項１から請求項３のいずれか１項に記載のパッシブラジエータ搭載型スピーカ。   The said reflecting member is provided with the left side reflector and the right reflector which reflect the sound from the said 2nd passive radiator on the left side and the right side of the said housing | casing, respectively. Passive radiator mounted speaker. 前記反射部材は、前記第２パッシブラジエータからの音を、前記筐体の上側に反射させる上側反射板を備える請求項１から請求項４のいずれか１項に記載のパッシブラジエータ搭載型スピーカ。   5. The passive radiator-mounted speaker according to claim 1, wherein the reflection member includes an upper reflection plate that reflects sound from the second passive radiator to the upper side of the housing. 6. 前記反射部材は、前記第２パッシブラジエータからの音を、前記筐体の下側に反射させる下側反射板を備える請求項５に記載のパッシブラジエータ搭載型スピーカ。   6. The passive radiator-mounted speaker according to claim 5, wherein the reflecting member includes a lower reflector that reflects sound from the second passive radiator to the lower side of the casing.
JP2016189356A 2016-09-28 2016-09-28 Passive radiator mounting type speaker Pending JP2018056747A (en)

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