JP2005151183A - Bone conduction speaker, and pillow, chair or headphone using bone conduction speaker - Google Patents
Bone conduction speaker, and pillow, chair or headphone using bone conduction speaker Download PDFInfo
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本発明は、骨伝導によって音楽などを聴くことができる骨伝導スピーカー、および骨伝導スピーカーを使用した枕、椅子あるいはヘッドホンに係り、特に周囲への音の拡散を防いだものに関する。 The present invention relates to a bone conduction speaker that can listen to music and the like by bone conduction, and a pillow, chair, or headphone using the bone conduction speaker, and particularly relates to a structure that prevents the diffusion of sound to the surroundings.
従来、寝ながら音楽やラジオなどを聴く手段としては、例えば、枕本体の中にスピーカーを組み込んだものがあり、聴取者は表面被覆材の地裏側に取り付けたスピーカーからの音声を枕のメッシュシートを介して耳元で聴かせるように構成したものが出願公開されている。(特許文献1参照)
一方、骨伝導を利用したヘッドホンに関する特許出願も種々公開されている。(例えば、特許文献2参照)
そして、最近では、図13に示すように、骨伝導スピーカー(72)を頭部を受ける緩衝材(73)に組み込み、枕(71)として寝ながら音楽を聴くことができるものが商品化されている。その構成はポリウレタン等の連続気泡発泡体の表面にスキン層を一体に設けて枕形状の緩衝材(73)を形成し、この緩衝材(73)の上部表面に頭部(16)が当接するように狭い間隔で2つの骨伝導スピーカー(72)を埋設したものであり、使用者が頭(16)をのせることにより、骨伝導によって音楽などを聴くことができるものである。
On the other hand, various patent applications relating to headphones utilizing bone conduction have been published. (For example, see Patent Document 2)
Recently, as shown in FIG. 13, a bone conduction speaker (72) is incorporated into a cushioning material (73) that receives the head, and a pillow (71) that can listen to music while sleeping has been commercialized. Yes. The structure is that a skin layer is integrally formed on the surface of an open-cell foam such as polyurethane to form a pillow-shaped cushioning material (73), and the head (16) contacts the upper surface of the cushioning material (73). In this way, two bone conduction speakers (72) are embedded at a narrow interval, and the user can listen to music or the like by bone conduction by placing the head (16).
しかしながら、特許文献1の構成では、スピーカーは枕本体に組み込まれており、耳元にあるため小さい音量で聴くことができるが、基本的には所定の音量が存在することから他人にも聞こえるものであり、特に静かな病院などにおいては、同室者に迷惑をかけるおそれがある。
However, in the configuration of
また、特許文献2のヘッドホン構成の場合は、圧電型変換器がイヤーパッドのウレタンフォームに接触していることから、圧電型変換器の振動が頬骨に伝播するのと同時にウレタンフォームにも伝播し、音はウレタンフォーム側からも外部に漏れることになって、電車内などの公共の場では、他人に不快感を与えることになる。
Further, in the case of the headphone configuration of
そして、前記図13に示す構成によれば、頭をのせることで頭部(16)が骨伝導スピーカー(72)に接触するため、寝返りを打ってもヘッドホンのように邪魔になることなく音楽などを聴くことができるものである。しかし、頭部(16)を支える緩衝材(73)が連続気泡の発泡体であるポリウレタン製であり、気泡の壁面が面で繋がっていることから面積の大きい接触関係にあって振動が伝わり易いとともに、比較的硬質であり、しかも表面にスキン層があって、図中に波動を実線で示すように骨伝導スピーカー(72)の振動が緩衝材(73)に伝播し、緩衝材(73)の振動が空気振動に変換し易いものであることから、緩衝材(73)がスピーカーとなり、図中の破線で示すように空気伝播音が発生してしまい、依然として音洩れの問題が残っていた。 According to the configuration shown in FIG. 13, the head (16) comes into contact with the bone conduction speaker (72) by placing the head, so that music can be played without being disturbed like a headphone even if it is turned over. You can listen to them. However, since the cushioning material (73) that supports the head (16) is made of polyurethane, which is an open-cell foam, the wall surfaces of the bubbles are connected by a surface, so the vibration is easily transmitted in a large area contact relationship. At the same time, it is relatively hard and has a skin layer on the surface. As shown by the solid line in the figure, the vibration of the bone conduction speaker (72) propagates to the cushioning material (73), and the cushioning material (73) Since the vibration of the air is easy to convert into air vibration, the cushioning material (73) becomes a speaker, and air propagation sound is generated as shown by the broken line in the figure, and the problem of sound leakage still remains .
前記空気伝播音の発生を抑制するためには、図14に示すように、骨伝導スピーカー(72)を粘性液体を充填した防振体(75)上に設置する方法が考えられ、骨伝導スピーカー(72)の振動を防振体(75)によって減衰し、緩衝材(73)やその下方の枕への振動伝達を低減することができる。しかし、防振体(75)はゲル状溶液を封入した袋体であることから、コストアップになるばかりでなく、衝撃などによって袋が破れた場合にはゲル状溶液が洩れだしカバー体(74)および周辺を汚してしまう問題があった。 In order to suppress the generation of the air-borne sound, as shown in FIG. 14, a method of installing a bone conduction speaker (72) on a vibration isolator (75) filled with a viscous liquid can be considered. The vibration of (72) can be attenuated by the vibration isolator (75), and vibration transmission to the cushioning material (73) and the pillow below it can be reduced. However, since the vibration isolator (75) is a bag body in which a gel solution is enclosed, not only is the cost increased, but if the bag is torn by impact or the like, the gel solution leaks and the cover body (74 ) And the surrounding area.
本発明は上記点に着目してなされたものであり、枕や椅子、あるいはヘッドホンなどに利用した際に音が外部に洩れて他人に迷惑を掛けるようなことがないとともに、姿勢や使用場所の制約を受けずに音楽などを感度良く聴くことができる骨伝導スピーカーを提供するものである。 The present invention has been made paying attention to the above points, and when used for pillows, chairs, headphones, etc., the sound does not leak to the outside and cause trouble to others, and the posture and place of use are not affected. It is intended to provide a bone conduction speaker that can listen to music with high sensitivity without any restrictions.
上記課題を解決するため、本発明の骨伝導スピーカーは、信号入力手段から入力された音声信号を振動に変換する振動素子を有し、この振動素子を固着した振動伝達部材を弾性部を介してべース部材で揺動自在に支承したことを特徴とする。 In order to solve the above-mentioned problems, the bone conduction speaker of the present invention has a vibration element that converts an audio signal input from the signal input means into vibration, and a vibration transmission member to which the vibration element is fixed is interposed via an elastic portion. It is characterized by being pivotably supported by a base member.
本発明によれば、骨伝導スピーカーにおける振動素子の音声振動は振動伝達部材のみに伝播するため、頭蓋骨に当てることで感度よく音楽などを聴くことができるとともに、音声振動がクッション体などに伝播することによる音漏れを抑制することができ、他人に迷惑を掛けることがない骨伝導スピーカーや骨伝導スピーカーを使用した枕、椅子あるいはヘッドホンを、安価に、且つ容易に得ることができるものである。 According to the present invention, since the sound vibration of the vibration element in the bone conduction speaker propagates only to the vibration transmitting member, it is possible to listen to music or the like with high sensitivity by hitting the skull, and the sound vibration propagates to the cushion body or the like. Therefore, it is possible to obtain a bone conduction speaker or a pillow, chair, or headphones using the bone conduction speaker that can suppress sound leakage and that does not bother others.
以下、図面に基づき本発明の一実施形態について説明する。図1に断面図、図2に斜視図で示す骨伝導スピーカー(1)は、有底円筒状に形成されたベース部材(3)の上面開口に、開口縁から上方に球面形状を突出させた浅皿状の振動伝達部材(2)を配置し、この振動伝達部材(2)の下面に設けた突出部(2a)には圧電振動素子(4)を固着するとともに、振動伝達部材(2)とベース部材(3)の底部間には、図3に示す分解図でより明確に理解されるように、圧縮コイルバネ(5)を配設し、その弾性力により前記振動伝達部材(2)をベース部材(3)に対して揺動自在に支承している。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The bone conduction speaker (1) shown in a cross-sectional view in FIG. 1 and a perspective view in FIG. 2 has a spherical shape protruding upward from the opening edge at the upper surface opening of a base member (3) formed in a bottomed cylindrical shape. A shallow dish-shaped vibration transmission member (2) is arranged, and the piezoelectric vibration element (4) is fixed to the protrusion (2a) provided on the lower surface of the vibration transmission member (2), and the vibration transmission member (2). As shown more clearly in the exploded view shown in FIG. 3, a compression coil spring (5) is disposed between the bottom of the base member (3) and the vibration transmission member (2) by its elastic force. The base member (3) is swingably supported.
なお、前記振動伝達部材(2)を揺動自在に支承する部材としては、前記圧縮コイルバネ(5)に限らず、例えば、連続気泡のスポンジで筒状の弾性支持体を形成し、これを圧電振動素子(4)とベース部材(3)の底面間に介在させて振動伝達部材(2)を支承するようにしてもよい。 The member for swingably supporting the vibration transmitting member (2) is not limited to the compression coil spring (5). For example, a cylindrical elastic support is formed of open-cell sponge, and this is piezoelectric. The vibration transmitting member (2) may be supported by being interposed between the vibration element (4) and the bottom surface of the base member (3).
ベース部材(3)の開口縁と振動伝達部材(2)の周縁との間隙には環状のスポンジなどの弾性材からなる緩衝体(8)を介在させて隙間を閉塞しており、前記圧電振動素子(4)に受信器(9)からの音声信号を入力する基板(6)は、ベース部材(3)の底面に突設したリブ(3a)を利用して固着されており、リード線(7a)によって圧電振動素子(4)に接続されているとともに、リード線(7b)により受信器(9)と接続している。 The gap between the opening edge of the base member (3) and the peripheral edge of the vibration transmitting member (2) is blocked by a buffer (8) made of an elastic material such as an annular sponge, and the piezoelectric vibration The substrate (6) for inputting the audio signal from the receiver (9) to the element (4) is fixed using a rib (3a) protruding from the bottom surface of the base member (3), and the lead wire ( 7a) is connected to the piezoelectric vibration element (4) and is connected to the receiver (9) by a lead wire (7b).
また、ベース部材(3)の周側壁には複数の開口(3b)を形成しており、この開口(3b)によって圧電振動素子(4)の音声振動が容器状のベース部材(3)内で共鳴することを防止するようにしている。開口はベース部材(3)の底部に設けても良く、わずかな振動音でも共鳴しないように構成しているものであり、上記の骨伝導スピーカー(1)の構成によって、振動伝達部材(2)はベース部材(3)の開口部の内側に揺動自在に、且つ、頂部の球面が上方に突出するように配置されるものである。 A plurality of openings (3b) are formed in the peripheral side wall of the base member (3), and the sound vibration of the piezoelectric vibration element (4) is caused in the container-like base member (3) by the openings (3b). The resonance is prevented. The opening may be provided at the bottom of the base member (3), and is configured so as not to resonate even with a slight vibration sound. The vibration transmission member (2) is configured according to the configuration of the bone conduction speaker (1). Is arranged so that it can swing inside the opening of the base member (3) and the spherical surface of the top projects upward.
なお、振動伝達部材(2)の中央突出部は球面でなくともよく、頭蓋骨への当接時に違和感のない形状、例えば平面でもよく、骨伝導スピーカー(1)全体の形状も円筒形でなく矩形でもよいことはいうまでもない。 The central projecting portion of the vibration transmitting member (2) does not have to be spherical, and may have a shape that does not feel uncomfortable when contacting the skull, for example, a flat surface, and the overall shape of the bone conduction speaker (1) is not cylindrical but rectangular. But it goes without saying.
そして、振動伝達部材(2)に固着した圧電振動素子(4)は、薄い金属基板の片面側に極薄肉の圧電セラミック板を貼り合わせたものであり、図4に示す音源送信装置(10)からの音声を音声振動に変換し、頭部(16)の頭蓋骨へ直接伝達することで、難聴者であっても骨伝導により聞こえるようにするものである。 The piezoelectric vibration element (4) fixed to the vibration transmission member (2) is obtained by bonding an extremely thin piezoelectric ceramic plate to one side of a thin metal substrate, and the sound source transmitting device (10) shown in FIG. Is converted into sound vibration and transmitted directly to the skull of the head (16), so that even a hearing-impaired person can be heard by bone conduction.
すなわち、音源送信装置(10)からの電波信号を受信する音声受信器(9)はDC電源部やアンテナを内蔵しており、受信した電波信号を音声信号に変換するとともに基板(6)を介して音声信号を圧電振動素子(4)に入力することで振動に変換し、骨伝導スピーカー(1)として作用させるものであって、前記受信器(9)の側面には、電源スイッチやボリュームスイッチなどを配置している。 That is, the voice receiver (9) that receives the radio signal from the sound source transmitter (10) has a built-in DC power supply and an antenna, converts the received radio signal into a voice signal, and passes through the substrate (6). The sound signal is input to the piezoelectric vibration element (4) to be converted into vibration and act as a bone conduction speaker (1). A power switch or a volume switch is provided on the side of the receiver (9). Etc. are arranged.
音源送信装置(10)は、音源(11)となるテレビやCDラジカセ等からの音声やマイク入力による音声を増幅する音声増幅部(12)とそれを送信する送信部(13)とを有しており、リモコン(14)によって操作ができるようにしてもよい。また、入力側に前記音源(11)の他、タイマーや目覚まし機能を備えた時計(15)からの信号が入力されるようになっており、時計(15)からの信号で頭部(16)に振動を与えて目覚ましとしたり、タイマー動作させるようにしている。 The sound source transmitting device (10) includes a sound amplifying unit (12) that amplifies sound from a TV or a CD radio cassette player that serves as the sound source (11) or sound from a microphone, and a transmitting unit (13) that transmits the sound. And may be operated by the remote control (14). In addition to the sound source (11) on the input side, a signal from a clock (15) equipped with a timer and an alarm function is input. The head (16) A vibration is applied to the alarm clock, and a timer is operated.
音源(11)からの音声がステレオで入力される場合には、ステレオとして送信部(13)から受信部(9)へ送信することができるものであり、この場合には、受信部(9)で、左右の骨伝導スピーカー(1)(1)に対して、モノラル用あるいはステレオ用として使用できるよう信号に基づく自動切換回路を備えることが望ましい。 When the sound from the sound source (11) is input in stereo, it can be transmitted as stereo from the transmitter (13) to the receiver (9). In this case, the receiver (9) Therefore, it is desirable to provide an automatic switching circuit based on signals so that the left and right bone conduction speakers (1) and (1) can be used for monaural or stereo.
また、前記送信部(13)と受信部(9)との信号伝達についても電波式に限らず、例えば、発光部と受光部とからなる赤外線LEDを用いた方式でも可能である。 Further, the signal transmission between the transmitting unit (13) and the receiving unit (9) is not limited to the radio wave type, and for example, a method using an infrared LED including a light emitting unit and a light receiving unit is also possible.
以上の構成によって、音源となるテレビやCDラジカセなどから音声信号が入力されると、圧電振動素子(4)が振動し、これに伴って振動伝達部材(2)が振動する。そして、この振動伝達部材(2)の球面部がベース部材(3)の開口から外方に突出しているため、これに頭部(16)や頬骨などの頭蓋骨を当てることで、骨伝導によって入力された音楽などを明瞭に聴くことができる。 With the above configuration, when an audio signal is input from a television or a CD radio cassette or the like as a sound source, the piezoelectric vibration element (4) vibrates, and accordingly, the vibration transmission member (2) vibrates. And since the spherical surface part of this vibration transmission member (2) protrudes outward from the opening of the base member (3), by applying a skull such as the head (16) or cheekbone to this, input by bone conduction You can listen to the recorded music clearly.
しかも圧縮コイルバネ(5)による振動吸収作用によって圧電振動素子(4)からの振動はベース部材(3)に伝達せず、さらにウレタンフォームなどの緩衝材に伝播することを防ぎ、外方に音が漏れることを抑制できるため、周囲に迷惑を掛けることをなくすことができるものである。 In addition, the vibration from the piezoelectric vibration element (4) is not transmitted to the base member (3) due to the vibration absorbing action of the compression coil spring (5), and is further prevented from propagating to a cushioning material such as urethane foam. Since it is possible to suppress leakage, it is possible to eliminate inconvenience to the surroundings.
次に、他の実施例について説明する。図5から図7に示す骨伝導スピーカー(21)は、前記実施例と同様に、有底円筒状に形成されたベース部材(23)の上面開口に、開口縁から上方に球面形状を突出させたほぼ浅皿状の振動伝達部材(22)を配置し、この振動伝達部材(22)の下面に設けた突出部(22a)には圧電振動素子(24)を固着するものであるが、振動伝達部材(22)の外周縁はベース部材(23)の開口縁部に嵌着させている。
Next, another embodiment will be described. The bone conduction speaker (21) shown in FIGS. 5 to 7 has a spherical shape protruding upward from the opening edge of the upper surface opening of the base member (23) formed in a bottomed cylindrical shape, as in the above embodiment. In addition, a substantially shallow dish-shaped vibration transmission member (22) is arranged, and the piezoelectric vibration element (24) is fixed to the protrusion (22a) provided on the lower surface of the vibration transmission member (22). The outer peripheral edge of the transmission member (22) is fitted to the opening edge of the base member (23).
そして、振動伝達部材(22)の皿状部の周縁には、ほぼ全周に亙るとともに一部を伝達部材本体(22)の内外部と連続させた2条の円弧状スリット(22b)を互いに対向し、且つ隣接して設けることで、圧電振動素子(24)を固着した中央部とベース部材(23)に嵌着させた周縁部(22c)との間に円弧状の弾性帯(22d)を形成し、この弾性帯(22d)によってベース部材(23)に対して振動伝達部材(22)の中央部を上下揺動自在に支承するようにしている。 Then, two arc-shaped slits (22b) are formed on the periphery of the dish-shaped portion of the vibration transmitting member (22) so as to extend over almost the entire circumference and partly connect with the inside and outside of the transmitting member body (22). An arc-shaped elastic band (22d) is provided between the central part to which the piezoelectric vibration element (24) is fixed and the peripheral part (22c) fitted to the base member (23) by being provided adjacent to each other. The elastic band (22d) supports the central portion of the vibration transmitting member (22) with respect to the base member (23) so as to be swingable up and down.
したがって、この構成によれば、振動伝達部材(22)とベース部材(23)の底部間には前記実施例のように圧縮コイルバネ(5)を必要とせず、また同様に、ベース部材(23)の開口縁と振動伝達部材(22)の周縁との振動吸収のための間隙は形成されないので、環状の弾性緩衝体(8)を介在させて隙間を閉塞する必要もなく、部品数を少なくして全体構造を簡易にすることができる。 Therefore, according to this configuration, the compression coil spring (5) is not required between the bottoms of the vibration transmitting member (22) and the base member (23) as in the above embodiment, and similarly, the base member (23) Since no gap for absorbing vibration is formed between the opening edge and the periphery of the vibration transmitting member (22), it is not necessary to close the gap with an annular elastic buffer (8), and the number of parts can be reduced. The overall structure can be simplified.
なお、前記振動伝達部材(22)およびこれを揺動自在に支承する弾性帯(22d)は、円弧状に限らず、矩形に形成することもできるものであり、スリット(22b)および弾性帯(22d)も2条に限らず、2条以上形成することで、より大きな弾性力、あるいは揺動幅を得ることができる。 The vibration transmitting member (22) and the elastic band (22d) for swingably supporting the vibration transmitting member (22d) are not limited to an arc shape, and may be formed in a rectangular shape, such as a slit (22b) and an elastic band ( 22d) is not limited to two, but by forming two or more, it is possible to obtain a larger elastic force or swinging width.
また、圧電振動素子(24)に受信器(9)からの音声信号を入力する基板(6)の支持構成やベース部材(23)の周側壁における複数の開口(23b)は前記実施例と同様に形成されている。 Further, the support structure of the substrate (6) for inputting the audio signal from the receiver (9) to the piezoelectric vibration element (24) and the plurality of openings (23b) in the peripheral side wall of the base member (23) are the same as in the above embodiment. Is formed.
次に、本発明の骨伝導スピーカー(1)(21)の使用例について説明する。図8に示す枕(37)は、その上部表面に、例えば前記実施例の骨伝導スピーカー(1)を配置した弾性緩衝材(38)を上下2層に分割して形成し、これらをカバー体(39)で覆う構成であり、骨伝導スピーカー(1)は上部緩衝材(38a)の表面に所定の間隔で形成した透孔(38c)中に埋設され、図示しない受信器へのリード線は上下の緩衝材(38a)(38b)間に挟み込んで枕(37)の外部に導出させている。 Next, the usage example of the bone conduction speaker (1) (21) of this invention is demonstrated. The pillow (37) shown in FIG. 8 is formed by dividing, for example, an elastic cushioning material (38) in which the bone conduction speaker (1) of the above-described embodiment is arranged into two upper and lower layers on the upper surface thereof. The bone conduction speaker (1) is embedded in through holes (38c) formed at predetermined intervals on the surface of the upper cushioning material (38a), and the lead wire to the receiver (not shown) is It is sandwiched between upper and lower cushioning materials (38a) and (38b) and led out of the pillow (37).
カバー体(39)は袋状で一側にファスナーを設けることで、骨伝導スピーカー(1)を着脱可能にしており、また、枕(37)に頭部(16)をのせた状態である図9に示すように、寝返りを打った場合でも、頭部(16)が確実にいずれかの骨伝導スピーカー(1)(1)と接触し合うように、骨伝導スピーカーの数は少なくとも2つ以上を弾性緩衝材(38)の長手方向に沿って所定間隔で配設している。 The cover body (39) has a bag shape and is provided with a fastener on one side so that the bone conduction speaker (1) can be attached and detached, and the head (16) is placed on the pillow (37). 9, the number of bone conduction speakers is at least two to ensure that the head (16) is in contact with one of the bone conduction speakers (1) and (1) even when turning over. Are arranged at predetermined intervals along the longitudinal direction of the elastic cushioning material (38).
緩衝材(38)は、クッション性を有するとともに頭の重さで押圧されるが、前述のごとく、骨伝導スピーカー(1)内の振動伝達部材(2)および圧電振動素子(4)の振動はベース部材(3)に伝播せず、したがって、枕の緩衝材(37)にも伝播しないので外部への空気伝播音の発生、すなわち音漏れすることを抑制でき、病室などにおいても同室者に迷惑を掛けることがない。 The cushioning material (38) has a cushioning property and is pressed by the weight of the head. As described above, the vibration transmitting member (2) and the piezoelectric vibration element (4) in the bone conduction speaker (1) are vibrated. It does not propagate to the base member (3), and therefore does not propagate to the cushioning material (37) of the pillow, so that it is possible to suppress the generation of air-propagating sound, that is, sound leakage. It is not multiplied.
骨伝導スピーカー(1)を内蔵させた枕(37)は、パッド状で可能な限り小さく、且つ薄く形成すればよいが、大きさや高さが不足する場合は、図のように、一般の枕(35)の上にのせて使うようにすればよい。 The pillow (37) with built-in bone conduction speaker (1) should be as small and thin as possible in the form of a pad, but if the size and height are insufficient, a general pillow as shown in the figure (35) should be used on top.
図10は椅子(47)のヘッドレスト(47a)部に本発明の骨伝導スピーカー(1)(21)を埋設した例であり、例えば骨伝導スピーカー(1)を所定の間隔でヘッドレスト部(47a)の弾性緩衝材中に複数個埋め込んで使用するものであり、この場合についても、音源(11)となるテレビやCDラジカセ等からの音楽などは、リモコン(14)などで制御、音量調整して骨伝導スピーカー(1)からの音声振動として頭部(16)に直接伝えられ、明瞭に聴くことができる。そして、前記と同様に、骨伝導スピーカー(1)内の振動伝達部材(2)および圧電振動素子(4)の振動はベース部材(3)に伝播せず、したがって、ヘッドレスト(47a)の弾性緩衝材に伝播して外部へ音漏れすることを抑制できるものである。 FIG. 10 shows an example in which the bone conduction speaker (1) (21) of the present invention is embedded in the headrest (47a) portion of the chair (47). For example, the bone conduction speaker (1) is placed at a predetermined interval in the headrest portion (47a). In this case as well, music from a TV or CD radio cassette, which is the sound source (11), can be controlled and volume adjusted with the remote control (14), etc. Sound vibration from the bone conduction speaker (1) is directly transmitted to the head (16) and can be heard clearly. Similarly to the above, the vibration of the vibration transmission member (2) and the piezoelectric vibration element (4) in the bone conduction speaker (1) does not propagate to the base member (3), and therefore the elastic cushioning of the headrest (47a). It is possible to suppress sound leakage to the outside by propagating to the material.
また、図11に示すように、ヘッドホン(57)に使用した場合には、音源(11)からの音楽などを受信する受信器(9)からの音波信号をヘッドバンド(58)で連結したヘッドホン(57)で受けるものであり、ヘッドホン(57)のカバー体(59)で被覆した弾性緩衝材(60)部分に骨伝導スピーカー(1)を埋設し、その振動伝達部材(2)を耳近傍の頬骨や耳の後側などの頭蓋骨に当てるように挿着することで、音漏れの少ない状態で、健常者は無論のこと難聴者も充分にその音声・音楽を聴くことができる。 Further, as shown in FIG. 11, when used for headphones (57), headphones in which sound signals from a receiver (9) that receives music from a sound source (11) are connected by a headband (58). The bone conduction speaker (1) is embedded in the elastic cushioning material (60) covered with the cover body (59) of the headphone (57), and the vibration transmission member (2) is placed near the ear. By inserting it so that it touches the skull, such as the back of the cheekbone or the back of the ear, a healthy person can, of course, hear the sound and music sufficiently even with a hearing-impaired person with little sound leakage.
本発明によれば、健常者のみならず難聴者についても音楽などを楽しむことができ、音漏れの少ない骨伝導スピーカーとして利用することができる。 According to the present invention, music and the like can be enjoyed not only by a healthy person but also by a hearing impaired person, and can be used as a bone conduction speaker with little sound leakage.
1、21 骨伝導スピーカー 2、22 振動伝達部材
2a、22a 突出部 3、23 ベース部材
3a リブ 3b、23b 開口
4 24 圧電振動素子 5 圧縮コイルバネ
6 基板 7a,7b リード線
8 緩衝体 9 受信器
10 音源送信装置 11 音源
12 音声増幅部 13 送信部
16 頭部 22b スリット
22c 周縁部 22d 弾性帯
37 枕 38a 上部緩衝材
38b 下部緩衝材 38c 透孔
39 カバー体 47 椅子
47a ヘッドレスト 57 ヘッドホン
58 ヘッドバンド 59 カバー体
60 弾性緩衝体
DESCRIPTION OF
10
12
16
37
38b
39
58
60 Elastic shock absorber
Claims (8)
6. A headphone characterized in that the bone conduction speaker base member according to claim 1 is embedded in a cushion body in the vicinity of the ear, and the vibration transmission member is disposed so as to contact the skull portion.
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JP2003385998A JP2005151183A (en) | 2003-11-14 | 2003-11-14 | Bone conduction speaker, and pillow, chair or headphone using bone conduction speaker |
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