JP2009088942A - Earphone apparatus - Google Patents

Earphone apparatus Download PDF

Info

Publication number
JP2009088942A
JP2009088942A JP2007255335A JP2007255335A JP2009088942A JP 2009088942 A JP2009088942 A JP 2009088942A JP 2007255335 A JP2007255335 A JP 2007255335A JP 2007255335 A JP2007255335 A JP 2007255335A JP 2009088942 A JP2009088942 A JP 2009088942A
Authority
JP
Japan
Prior art keywords
output
bone conduction
sound
ear
unit
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
JP2007255335A
Other languages
Japanese (ja)
Inventor
Takanori Nakatani
任徳 中谷
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.)
COSMO GEAR KK
Original Assignee
COSMO GEAR KK
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 COSMO GEAR KK filed Critical COSMO GEAR KK
Priority to JP2007255335A priority Critical patent/JP2009088942A/en
Publication of JP2009088942A publication Critical patent/JP2009088942A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earphone apparatus capable of being simply structured, being made light in weight, reducing costs, eliminating un uncomfortable feeling during use, transmitting sufficient bone conduction sound by small output without generating a deviation or a gap during use and imparting deeper presence. <P>SOLUTION: A sound output part 3 is provided on the ear insertion side of a case body 5, a bone conduction driver 4 is provided on the rear part of the sound output part 3 inside the case body 5, sound signals are outputted into the ear from the sound output part 3, and vibration signals are outputted from the bone conduction driver 4 through the case body 5 to the inner wall of the ear. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明はイヤホン装置に関するものであり、より詳しくは、空気伝導と骨伝導を併用することにより、高音質で臨場感のある音を提供することができるイヤホン装置に関するものである。   The present invention relates to an earphone device. More specifically, the present invention relates to an earphone device that can provide a sound with high sound quality and presence by using both air conduction and bone conduction.

従来、イヤホン装置は耳内に挿入される筐体内に音響出力部を設け、該音響出力部より空気伝導される音響信号を出力するものであるが、音の臨場感に乏しいといった問題があり、これを解決するべく、音響出力部とは別に骨伝導ドライバーを併設したものが提案されている（例えば、特許文献１，２参照。）。   Conventionally, an earphone device is provided with a sound output unit in a housing inserted into the ear, and outputs an acoustic signal that is air-conducted from the sound output unit, but there is a problem that the sense of presence of sound is poor, In order to solve this problem, a device in which a bone conduction driver is provided separately from the acoustic output unit has been proposed (see, for example, Patent Documents 1 and 2).

特許文献１は、音響出力部を筐体に収容したヘッドホンにおいて、骨伝導受話器を連結部材を介して取り付けたものが開示されており、連結部材の先の前記骨伝導受話器を皮膚の薄い耳の後ろ部位に当てて頭蓋骨に振動信号を伝達し、臨場感を付与するように構成したものである。また、特許文献２は、左右の耳に対向して配置されるように設計された一対の音響出力部と、頸の背後に対向して配置されるように設計された振動出力部と、音声再生信号に基づいて、上記音響出力部から音声を出力すると同時に、上記骨電導部から振動信号を出力するように構成したものであり、音響出力部から出力された音声は左右の耳に聴取されると同時に、骨伝導部から出力された振動信号が頸の背後で感受され、これら音響信号と振動信号の組合された臨場感のある音響効果を聴取者は得ることができる。   Patent Document 1 discloses a headphone in which an acoustic output unit is accommodated in a housing, in which a bone conduction receiver is attached via a connecting member, and the bone conduction receiver at the end of the connecting member is attached to a thin ear of skin. A vibration signal is transmitted to the skull by being applied to the rear part, and a sense of reality is provided. Patent Document 2 discloses a pair of sound output units designed to be arranged to face the left and right ears, a vibration output unit designed to be arranged to face the back of the neck, and a sound. Based on the reproduction signal, the sound is output from the acoustic output unit, and at the same time, the vibration signal is output from the bone conducting unit. The sound output from the acoustic output unit is heard by the left and right ears. At the same time, the vibration signal output from the bone conduction part is sensed behind the neck, and the listener can obtain a realistic sound effect in which the sound signal and the vibration signal are combined.

しかしながら、特許文献１は、耳内に挿入される音響出力部の筐体とは別に連結部材を介して骨伝導部を設けているため構造が複雑となり、重量も増え、製造コストが嵩張るとともに、使用時の違和感も避けられない。また、使用中に骨伝導部にずれが生じたり、皮膚との隙間が生じたりして十分に骨導音を伝えることができない場合があった。   However, in Patent Document 1, the structure is complicated because the bone conduction part is provided via the connecting member separately from the housing of the sound output part inserted into the ear, the weight is increased, and the manufacturing cost is increased. Uncomfortable feeling during use is inevitable. Further, there are cases in which bone conduction sound cannot be sufficiently transmitted due to a deviation in the bone conduction part during use or a gap with the skin.

また、特許文献２は、骨伝導部がヘッドバンドの略中央部に取り付けられているため、ヘッドバンドが存在しないイヤホン装置には適応できず、また、頭蓋骨から遠いことから、骨導音として十分に伝えるためには大出力が必要である。さらに、上記いずれの文献のものも、鼓膜と耳小骨を経由するのではなく、頭蓋骨を介して蝸牛に送られるものであるため、付与できる臨場感に限界があった。   Moreover, since the bone conduction part is attached to the substantially central part of the headband, Patent Document 2 cannot be applied to an earphone device that does not have a headband, and it is far from the skull, so that it is sufficient as a bone conduction sound. High power is necessary to convey to In addition, any of the above documents is not sent via the tympanic membrane and the ossicle, but is sent to the cochlea via the skull, so there is a limit to the realism that can be imparted.

実開昭６３−６８２８９号公報Japanese Utility Model Publication No. 63-68289 特開２０００−２４４９９４号公報JP 2000-244994 A

そこで、本発明が解決しようとするものは、構造が簡単で重量も軽くコスト低減が図れるとともに、使用時の違和感もなく、また使用中にずれや隙間が生じることなく小出力で十分な骨導音を伝達でき、より深い臨場感を付与できるイヤホン装置を提供する点にある。   Therefore, what the present invention intends to solve is that the structure is simple, the weight is light, the cost is reduced, there is no sense of incongruity during use, and there is no gap or gap during use. An object of the present invention is to provide an earphone device that can transmit sound and give a deeper presence.

本発明者は前述の課題を解決するにあたり鋭意検討を進めた結果、耳に挿入されるイヤホン筐体内に音響出力部とともに骨伝導ドライバーを収納し、該筐体を通じて直接、耳内壁に振動信号を出力することで、耳内の振動に敏感な耳小骨等からより直接的に蝸牛に対して骨導音を伝えることができ、これにより臨場感を飛躍的に向上できることを見出し、本発明を完成するに至った。   As a result of diligent investigations to solve the above-mentioned problems, the inventor houses a bone conduction driver together with an acoustic output unit in an earphone housing that is inserted into the ear, and directly transmits a vibration signal to the inner ear wall through the housing. By output, it was found that bone conduction sound can be transmitted more directly to the cochlea from ear ossicles etc. that are sensitive to vibrations in the ear, and this can dramatically improve the sense of reality, and the present invention has been completed It came to do.

すなわち本発明は、筐体耳挿入側に音響出力部を設け、前記筐体内における前記音響出力部の後方に骨伝導ドライバーを設け、前記音響出力部より耳内に音響信号を出力するとともに、前記骨伝導ドライバーより前記筐体を通じて耳内壁に振動信号を出力することを特徴とするものである。   That is, the present invention provides a sound output unit on the housing ear insertion side, a bone conduction driver is provided behind the sound output unit in the housing, outputs an acoustic signal in the ear from the sound output unit, and A vibration signal is output from the bone conduction driver to the inner ear wall through the housing.

ここで、前記骨伝導ドライバーを前記音響信号出力部と同軸上に設けてなると好ましい。   Here, it is preferable that the bone conduction driver is provided coaxially with the acoustic signal output unit.

さらに、前記音響出力部及び前記骨伝導ドライバーに送る信号出力の大きさを調整するための出力調整手段を設け、前記出力調整手段を前記音響出力部に送る信号出力を調整する第１の出力調整部と、前記骨伝導ドライバーに送る信号出力を調整する第２の出力調整部とを設けてなると好ましい。   Furthermore, the output adjustment means for adjusting the magnitude | size of the signal output sent to the said acoustic output part and the said bone conduction driver is provided, The 1st output adjustment which adjusts the signal output which sends the said output adjustment means to the said acoustic output part And a second output adjusting unit for adjusting a signal output to be sent to the bone conduction driver.

また、前記第１の出力調整部の最小出力値を、１５〜４０デシベル以上の値に設定してなると好ましい。   Further, it is preferable that the minimum output value of the first output adjustment unit is set to a value of 15 to 40 decibels or more.

さらに、前記骨伝導ドライバーを筐体後方の内壁面に当接して設け、該内壁を通じて筐体全体に前記振動信号を出力してなるものが好ましい。   Further, it is preferable that the bone conduction driver is provided in contact with an inner wall surface at the rear of the casing, and the vibration signal is output to the entire casing through the inner wall.

本発明に係るイヤホン装置によれば、音響出力部を有する同一筐体内に骨伝導ドライバーを設け、該筐体を介して耳内壁に骨導音となる振動信号を出力するため、連結部材もなく構造が簡単で且つ軽量となり、使用中にずれや隙間も生じず、コスト低減が図れるとともに使用時に違和感なく、小出力で十分な骨導音を蝸牛に伝達でき、より深い臨場感を付与できる。   According to the earphone device of the present invention, since a bone conduction driver is provided in the same housing having the sound output unit, and a vibration signal serving as a bone conduction sound is output to the inner wall of the ear via the housing, there is no connection member. The structure is simple and lightweight, and there is no deviation or gap during use, cost can be reduced, and there is no sense of incongruity during use, and sufficient bone conduction sound can be transmitted to the cochlea with a small output, giving a deeper presence.

さらに、骨伝導ドライバーを音響出力部と同軸上に設けてなると、骨伝導ドライバーから出力される振動信号を同軸にある音響出力部の耳挿着部周縁から均一的に耳内壁へ伝えるため、振動の伝わり方の偏りを無くし、より高音質で臨場感のある音を伝えることができる。   Furthermore, when the bone conduction driver is provided coaxially with the acoustic output unit, vibration signals output from the bone conduction driver are uniformly transmitted from the periphery of the ear insertion part of the acoustic output unit coaxially to the inner wall of the ear. It is possible to eliminate the bias in the way of transmission, and to convey a sound with higher quality and presence.

また、音響出力部及び骨伝導ドライバーに送る信号出力の大きさを調整するための出力調整手段を設け、出力調整手段を音響出力部に送る信号出力を調整する第１の出力調整部と、骨伝導ドライバーに送る信号出力を調整する第２の出力調整部とを設けてなると、場面に応じて、骨導音又は気導音を主とすることができ、使用者の多様な好みに対応することができる。   Also provided is an output adjustment means for adjusting the magnitude of the signal output sent to the acoustic output section and the bone conduction driver, a first output adjustment section for adjusting the signal output sent from the output adjustment means to the acoustic output section, By providing a second output adjustment unit that adjusts the signal output sent to the conduction driver, bone conduction sound or air conduction sound can be mainly used according to the situation, and it corresponds to various preferences of users. be able to.

さらに、第１の出力調整部の最小出力値を、１５〜４０デシベル以上の値に設定してなると、音質に必要な最低限の気導音を確保できる。   Furthermore, when the minimum output value of the first output adjustment unit is set to a value of 15 to 40 decibels or more, the minimum air conduction sound necessary for sound quality can be secured.

また、骨伝導ドライバーを筐体後方の内壁面に当接して設け、該内壁を通じて筐体全体に振動信号を出力してなると、簡単な構造で且つ十分な振動信号（骨導音）伝えることができる。   In addition, if a bone conduction screwdriver is provided in contact with the inner wall surface at the rear of the housing and a vibration signal is output to the entire housing through the inner wall, a simple structure and sufficient vibration signal (bone conduction sound) can be transmitted. it can.

次に、図１〜図９に基づき、本発明の実施形態を詳細に説明する。図１は本発明に係るイヤホン装置の全体構成を示す斜視図であり、図１〜図５は本発明の第１実施形態、図６及び図７は第２実施形態、図８及び図９は第３実施形態を示し、図中符号１はイヤホン装置、２、２Ａ、２Ｂはイヤホン部、３は音響出力部、４は骨伝導ドライバー、５は筐体をそれぞれ示している。   Next, based on FIGS. 1-9, embodiment of this invention is described in detail. FIG. 1 is a perspective view showing the overall configuration of an earphone device according to the present invention. FIGS. 1 to 5 are a first embodiment of the present invention, FIGS. 6 and 7 are a second embodiment, and FIGS. In the figure, reference numeral 1 denotes an earphone device, 2, 2A and 2B denote earphone parts, 3 denotes an acoustic output part, 4 denotes a bone conduction driver, and 5 denotes a housing.

まず、図１〜図５に基づき第１実施形態を説明する。
本発明のイヤホン装置１は、図１及び図３に示すように、イヤホン部２を構成する筐体５の耳挿入側に音響出力部３を設け、前記筐体５内における前記音響出力部３の後方に骨伝導ドライバー４を設けたものであり、これにより図４に示すように、前記音響出力部３より音響信号を耳内に出力するとともに、前記骨伝導ドライバー４より前記筐体５を通じて耳内壁ｅに振動信号を出力することを特徴としている。 First, a first embodiment will be described with reference to FIGS.
As shown in FIGS. 1 and 3, the earphone device 1 of the present invention is provided with a sound output unit 3 on the ear insertion side of a housing 5 constituting the earphone unit 2, and the sound output unit 3 in the housing 5. As shown in FIG. 4, an acoustic signal is output from the acoustic output unit 3 into the ear, and from the bone conduction driver 4 through the housing 5. It is characterized by outputting a vibration signal to the inner ear wall e.

イヤホン部２の全体は、図１に示すように、丸みを帯びた耳挿入側を外耳道に数ミリ挿入して、外耳道の入口で装着支持して使用する構成としたが、これら以外にもヘッドバンド型やネックバンド型、クリップを外耳に引っ掛ける耳掛け型及びクリップ型として構成してもよい。これにより、スポーツなど激しい動きでも脱落しにくいものとすることができる。また、耳穴に深く差し込んで使用するカナル型を用いれば、遮音性能を極めて高いものとすることができる。   As shown in FIG. 1, the entire earphone unit 2 has a structure in which a rounded ear insertion side is inserted into the ear canal several millimeters and is mounted and supported at the entrance to the ear canal. You may comprise as a band type, a neckband type, an ear hook type which clips a clip on an outer ear, and a clip type. Thereby, it can be made hard to drop out even in intense movements such as sports. Moreover, if a canal type that is used by being inserted deeply into the ear hole is used, the sound insulation performance can be made extremely high.

音響出力部３は、従来イヤホン装置に用いられている公知のものを広く適用することができ、例えば駆動方式においてもコイルを取り付けた振動板が磁石の発生する磁界の中で前後に振動する方式であるダイナミック型が一般的であるが、これに限られず、薄い圧電体を２枚の金属板で挟み、電圧を加えることによって振動を発生させる圧電型や、静電型及びコンデンサ型、バランスド・アーマチュア型と呼ばれるタイプの駆動方式、又はその他同様の効果を得られるものであってもよい。また、その後方に設ける骨伝導ドライバー４についても従来の骨伝導スピーカーに用いられている種々の構造のものを適用できる。   The sound output unit 3 can be widely applied to those conventionally used in earphone devices. For example, in a drive system, a diaphragm with a coil attached vibrates back and forth in a magnetic field generated by a magnet. However, the dynamic type is not limited to this, and a piezoelectric type that generates vibration by sandwiching a thin piezoelectric body between two metal plates and applying a voltage, an electrostatic type and a capacitor type, and a balanced type A drive system of a type called an armature type, or other similar effects may be obtained. Further, the bone conduction driver 4 provided on the rear side thereof can be applied with various structures used in conventional bone conduction speakers.

筐体５は、合成樹脂により成型されており、図２に示すように、耳挿入側に音響出力部３を収納する半球状の耳挿着部５０と、その後方に骨伝導ドライバー４を収納する筒状の骨伝導収納部５１と、該骨伝導収納部５１より下方に先細形状に延びるコード保持部５２とより一体的に構成されている。尚、筐体５を合成樹脂で成型する以外に、金属材料等で成形してもよい。
耳挿着部５０は、より具体的には先端開口したラッパ状に形成され、該開口部５０ａに従来から同様の音響振動板を備える音響ドライバーユニット３０を嵌め込んだものである。 The housing 5 is molded of synthetic resin, and as shown in FIG. 2, the hemispherical ear insertion portion 50 that houses the sound output portion 3 on the ear insertion side, and the bone conduction driver 4 behind that is housed. The cylindrical bone conduction storage 51 and the cord holding part 52 extending in a tapered shape below the bone conduction storage 51 are integrally formed. In addition, the housing 5 may be formed of a metal material or the like in addition to the synthetic resin.
More specifically, the ear insertion part 50 is formed in a trumpet shape having an opening at the tip, and the acoustic driver unit 30 having a conventional acoustic diaphragm is fitted into the opening part 50a.

また、骨伝導収納部５１は、前記耳挿着部５０の開口部５０ａと同軸に後方に開放される開口部５１ａとこれを閉塞する蓋部材５３を備え、前記開口部５１ａに骨伝導ドライバー４を収納し、前記開口部５１ａが閉塞されることで骨伝導ドライバー４により蓋部材５３が直接振動を付与され、筐体５全体に振動が伝わる。
これにより音響ドライバーユニット３０の後方の同軸上に骨伝導ドライバー４が位置され、音響ドライバーユニット３０から出力される音響信号を包み込むようにして、耳挿着部の周囲より骨伝導ドライバー４から出力された振動信号が耳内壁に対して均一に付与され、深みのある優れた臨場感が実現されるのである。
なお、本例では音響出力部３と同軸上に骨伝導ドライバー４が位置するように骨伝導収納部５１を形成しているが、これに関わらず、骨伝導ドライバー４を同軸上でない部位、例えば、筐体５内の側壁や同軸上の位置から上下左右にずれた位置に収納するものであってもよい。 Further, the bone conduction storage part 51 includes an opening part 51a that is opened rearward coaxially with the opening part 50a of the ear insertion part 50 and a lid member 53 that closes the opening part 51a, and the bone conduction driver 4 is provided in the opening part 51a. When the opening 51 a is closed, the bone conduction driver 4 directly applies vibration to the lid member 53, and the vibration is transmitted to the entire housing 5.
As a result, the bone conduction driver 4 is positioned coaxially behind the acoustic driver unit 30, and is output from the bone conduction driver 4 from around the ear insertion portion so as to wrap up the acoustic signal output from the acoustic driver unit 30. The vibration signal is uniformly applied to the inner wall of the ear, and a deep and excellent sense of realism is realized.
In this example, the bone conduction housing 51 is formed so that the bone conduction driver 4 is positioned coaxially with the acoustic output unit 3, but regardless of this, the bone conduction driver 4 is not coaxial, for example, The housing 5 may be housed in a position shifted vertically or horizontally from the side wall or the coaxial position.

骨伝導ドライバー４は、図２及び図３に示すように、ユニットケース４８底部に固定されるコイル４１と、該コイル４１の内側領域に位置される柱状の第１のマグネット４２と、外側領域に位置される円筒形状の第２のマグネット４３と、該第１のマグネット４２のユニットケース４８底面側に設けられる第１のプレート４４と、第２のマグネットのユニットケース４８底面側に設けられる第２のプレート４５と、第１のマグネット４２及び第２のマグネット４３をユニットケース開口側で一体化するための薄板状の基盤４６と、該基盤４６に固定される振動リング４７とより構成されている。振動リング４７は、中心部４７ａと周縁部４７ｃとこれを連結する連結部４７ｂよりなり、中心部４７ａが基盤４６に固定され、且つ周縁部４７ｃが蓋部材５３の内面側に固定されている。これにより音響に関係された電気的な信号が骨伝導ドライバー４に信号出力するための出力線を通じてコイル４１に供給され、コイル４１の内部及び外部に、伝達された電気的信号の強さに比例した磁気場が形成され、この磁気場が第１のマグネット４２及び第２のマグネット４３と相互作用する。すなわち上記第１のプレート４４及び第２のプレート４５の間のギャップに生じている磁場と相互作用することにより、コイル４１と、第１のマグネット４２、第２のマグネット４３、第１のプレート４４、第２のプレート４５、基盤４６及び振動リング４７が互いに骨伝導収納部５１軸方向において所定の周波数で相対振動することとなる。この振動が前記振動リングを介して前記蓋部材に伝わり、骨伝導収納部５１、耳挿着部５０を通じて耳内壁ｅへと伝達される。
なお、本例では１個の音響出力部３に対して１個の骨伝導ドライバー４を設けているが、１個の音響出力部３に対して、複数の骨伝導ドライバー４を設けてもよい。 As shown in FIGS. 2 and 3, the bone conduction driver 4 includes a coil 41 fixed to the bottom of the unit case 48, a columnar first magnet 42 positioned in the inner area of the coil 41, and an outer area. A cylindrical second magnet 43 positioned, a first plate 44 provided on the bottom surface side of the unit case 48 of the first magnet 42, and a second plate provided on the bottom surface side of the unit case 48 of the second magnet. Plate 45, a thin plate base 46 for integrating the first magnet 42 and the second magnet 43 on the unit case opening side, and a vibration ring 47 fixed to the base 46. . The vibration ring 47 includes a central portion 47 a, a peripheral portion 47 c, and a connecting portion 47 b that connects the central portion 47 a, the central portion 47 a is fixed to the base 46, and the peripheral portion 47 c is fixed to the inner surface side of the lid member 53. As a result, an electrical signal related to sound is supplied to the coil 41 through an output line for outputting a signal to the bone conduction driver 4, and is proportional to the strength of the electrical signal transmitted to the inside and outside of the coil 41. A magnetic field is formed, and this magnetic field interacts with the first magnet 42 and the second magnet 43. That is, by interacting with the magnetic field generated in the gap between the first plate 44 and the second plate 45, the coil 41, the first magnet 42, the second magnet 43, and the first plate 44. The second plate 45, the base 46, and the vibration ring 47 vibrate relative to each other at a predetermined frequency in the axial direction of the bone conduction housing 51. This vibration is transmitted to the lid member through the vibration ring, and is transmitted to the inner ear wall e through the bone conduction storage portion 51 and the ear insertion portion 50.
In this example, one bone conduction driver 4 is provided for one acoustic output unit 3, but a plurality of bone conduction drivers 4 may be provided for one acoustic output unit 3. .

そして、図４に示すように、振動リング４７が固定される前記蓋部材５３に振動を付与することにより、該蓋部材５３から骨伝導収納部５１及び耳挿着部５０の筐体５全体に振動が伝えられ、該耳挿着部５０から耳内壁に振動信号が伝達される。
なお、本例では振動リング４７から蓋部材５３を介して筐体５を振動付与するように構成したが、本発明はこれに限らず、蓋部材５３以外の部位、例えば側壁等から骨伝導収納部５１に振動付与するようにしてもよい。 And as shown in FIG. 4, by giving a vibration to the said cover member 53 to which the vibration ring 47 is fixed, from the cover member 53 to the whole housing | casing 5 of the bone conduction accommodating part 51 and the ear insertion part 50. Vibration is transmitted, and a vibration signal is transmitted from the ear insertion portion 50 to the inner wall of the ear.
In this example, the casing 5 is configured to vibrate from the vibration ring 47 via the lid member 53. However, the present invention is not limited to this, and the bone conduction is stored from a part other than the lid member 53, for example, a side wall. Vibration may be applied to the unit 51.

また、筐体５のコード保持部５２から延びるコード６０は、音響ドライバーユニット３０に信号出力するための出力線と骨伝導ドライバー４に信号出力するための出力線よりなり、該コード６０は、図１に示すように、各信号出力の大きさを調整するための出力調整部６に接続され、該出力調整部６から電気音響機器に接続するためのプラグ部７を先端に有する接続コード６１が延設されている。
出力調整部６は、音響ドライバーユニット３０及び骨伝導ドライバー４に送る信号出力の大きさを調整するものであり、図５に示すように、音響ドライバーユニット３０に送る信号出力を調整する第１の出力調整部６２と、骨伝導ドライバー４に送る信号出力を調整する第２の出力調整部６３とがそれぞれ独立に構成されており、音響出力のみで音楽を楽しんだり、骨伝導出力を付与して楽しんだりユーザーの好みに応じて各出力を調整することが可能となる。本例では第１の出力調整部６２の最小出力値が１５〜４０デシベル以上に設定されており、これにより第１の出力調整部６２を最小にして第２の出力調整部６３により骨伝導出力を優先して聞く際にも音響出力により最低限の音質を確保できるように構成されている。なお、このように独立調節可能に構成する以外に、例えば予め各出力を所定の値で合算して出力するように設定しておいてもよい。 The cord 60 extending from the cord holding portion 52 of the housing 5 includes an output line for outputting a signal to the acoustic driver unit 30 and an output line for outputting a signal to the bone conduction driver 4. The cord 60 is illustrated in FIG. As shown in FIG. 1, a connecting cord 61 is connected to an output adjusting unit 6 for adjusting the magnitude of each signal output, and has a plug portion 7 at the tip for connecting the output adjusting unit 6 to an electroacoustic device. It is extended.
The output adjustment unit 6 adjusts the magnitude of the signal output to be sent to the acoustic driver unit 30 and the bone conduction driver 4. As shown in FIG. 5, the first output adjustment unit 6 adjusts the signal output to be sent to the acoustic driver unit 30. The output adjustment unit 62 and the second output adjustment unit 63 that adjusts the signal output to be sent to the bone conduction driver 4 are configured independently of each other. Each output can be adjusted according to the user's preference. In this example, the minimum output value of the first output adjustment unit 62 is set to 15 to 40 decibels or more, whereby the first output adjustment unit 62 is minimized and the second output adjustment unit 63 performs the bone conduction output. Even when listening with priority, the sound output is configured to ensure a minimum sound quality. Note that, in addition to the configuration that allows independent adjustment in this way, for example, the outputs may be set in advance so as to be added together with a predetermined value.

本例では、上記のような構成としたが、出力調整部はなくてもよいし、イヤホン部２が左右一対のものでなくてもひとつだけのものでもよい。また、他の機能、例えばスピーカーに加え小型マイクを内蔵し、そのマイクで拾った周囲の雑音と正反対の波形データ（逆位相）をスピーカーへ出力して、雑音を大幅にカットするノイズキャンセリング機能等を備えてなるようにしてもよい。   In this example, the configuration is as described above. However, the output adjustment unit may not be provided, and the earphone unit 2 may not be a pair of left and right but only one. In addition, other functions such as a built-in small microphone in addition to the speaker, a noise canceling function that cuts the noise significantly by outputting the waveform data (opposite phase) opposite to the ambient noise picked up by the microphone to the speaker Etc. may be provided.

次に、図６及び図７に基づき第２実施形態を説明する。   Next, a second embodiment will be described based on FIGS.

本実施形態のイヤホン装置１Ａは、筐体５の骨伝導収納部５１を、耳挿着部５０とほぼ対称となるように後方に向けて同様にラッパ状に突出形成したものであり、骨伝導収納部５１と耳挿着部５０を前後に連結しているほぼ筒状の頸部５４から略Ｔ字状にコード保持部５２が延設されている。
そして、骨伝導収納部５１に装着した骨伝導ドライバー４の骨伝導振動が、前記筒状の頸部５４を通じて効率よく耳挿着部５０に伝達できるように構成されている。
その他の構成については、上記第１実施形態と同様であり、同一構造については同一符号を付してその説明を省略する。 In the earphone device 1A of the present embodiment, the bone conduction storage portion 51 of the housing 5 is formed so as to protrude rearward in a similar manner toward the rear so as to be substantially symmetrical with the ear insertion portion 50. A cord holding portion 52 extends in a substantially T-shape from a substantially cylindrical neck portion 54 that connects the storage portion 51 and the ear insertion portion 50 in the front-rear direction.
The bone conduction vibration of the bone conduction driver 4 attached to the bone conduction housing 51 can be efficiently transmitted to the ear insertion portion 50 through the tubular neck portion 54.
About another structure, it is the same as that of the said 1st Embodiment, About the same structure, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

次に、図８及び図９に基づき第３実施形態を説明する。   Next, a third embodiment will be described based on FIGS.

本実施形態のイヤホン装置１Ｂは、図８に示すようにほぼ筒状の骨伝導収納部５１側面に略く字状のコード保持部５２を連結したものであり、骨伝導収納部５１に装着した骨伝導ドライバー４の骨伝導振動が、前記筒状の頸部５４を通じて効率よく耳挿着部５０に伝達できるとともに、耳挿着部５０を挿入した耳穴によってのみイヤホン部２を保持するのではなく、コード保持部５２が接する耳介によっても保持し、耳穴への負担を減らすため、長時間使用する場合であっても快適に装着することができる。
その他の構成については、上記第１実施形態と同様であり、同一構造については同一の符号を付してその説明を省略する。 As shown in FIG. 8, the earphone device 1 </ b> B according to the present embodiment has a substantially cylindrical cord holding portion 52 connected to the side surface of a substantially cylindrical bone conduction storage portion 51, and is attached to the bone conduction storage portion 51. The bone conduction vibration of the bone conduction driver 4 can be efficiently transmitted to the ear insertion part 50 through the cylindrical neck part 54, and the earphone part 2 is not held only by the ear hole into which the ear insertion part 50 is inserted. Since the cord holding part 52 is held by the auricle and the burden on the ear hole is reduced, it can be comfortably worn even when used for a long time.
About another structure, it is the same as that of the said 1st Embodiment, About the same structure, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

次に、本発明に係るイヤホン装置の実施例と従来のイヤホン装置について、受聴音質に関する比較試験を行った結果を説明する。   Next, a description will be given of the results of a comparative test on the listening sound quality of the example of the earphone device according to the present invention and the conventional earphone device.

実施例１として、上記第２実施例の構造を備えたイヤホン装置を用い、従来のイヤホン装置としては、音響出力部のみ有するものを比較例１、及び同じく音響出力部のみ有するイヤホンと骨伝導イヤホンを併用し、骨伝導イヤホンを耳の後ろ部位に当てるものを比較例２とした。
そして、これら実施例１、比較例１、２について５人の試聴者がそれぞれ比較試聴を行い、その音質のクリア感、厚み、明るさ、開放感、安定感、高音域の質、低音域の質の各項目について５段階のポイント（１；かなり悪い／２；悪い／３；普通／４；良い／５；かなり良い）で評価した。 As the first embodiment, the earphone device having the structure of the second embodiment is used. As the conventional earphone device, the one having only the sound output portion is the comparative example 1, and the earphone and the bone conduction earphone having only the sound output portion are also used. And a bone conduction earphone applied to the rear part of the ear was used as Comparative Example 2.
And about these Example 1 and Comparative Examples 1 and 2, five test listeners perform comparative audition, respectively, the clear feeling of the sound quality, thickness, brightness, a feeling of openness, a sense of stability, the quality of the high range, and the low range Each quality item was rated on a five-point scale (1; pretty bad / 2; bad / 3; normal / 4; good / 5; pretty good).

結果を、下記の表１及び図１０のグラフに示す。各項目のポイントは視聴者５人の評価ポイントの合計である。
クリア感、厚み、明るさ、開放感、安定感、高音域の質、低音域の質の７つの項目全てにおいて、実施例１のイヤホン装置が音響出力部のみ有する比較例１や、これに骨伝導イヤホンを併用した比較例２のいずれよりも高い評価となった。特に、厚み（深み）と低音域では実施例１の全員の評価が最高値であり、本発明に係るイヤホン装置が従来のイヤホン装置よりも深い臨場感を表すことができるものであることが分かる。
また、試聴者から比較例１のものは物足りない音に感じる、立体感がないといった感想があり、比較例２のものは骨伝導の音はイヤホンの音（空気伝導の音）に消される、音が軽く感じるといった感想があった。一方、実施例１のものは重低音の響きが良い、身体にしみるような音を感じるといった感想もあり、臨場感のある音が出ていることを表す。 The results are shown in the following Table 1 and the graph of FIG. The point of each item is the total of the evaluation points of five viewers.
In all seven items of clearness, thickness, brightness, openness, stability, high-frequency range quality, and low-frequency range quality, the earphone device of Example 1 has only a sound output unit and Comparative Example 1 The evaluation was higher than that of Comparative Example 2 in which conductive earphones were used in combination. In particular, in the thickness (depth) and the low sound range, the evaluation of everyone in Example 1 is the highest value, and it can be seen that the earphone device according to the present invention can express a greater sense of realism than the conventional earphone device. .
In addition, there is an impression from the listener that the sound of Comparative Example 1 feels unsatisfactory, and that there is no three-dimensional effect, and the sound of bone conduction is canceled by the sound of the earphone (air conduction sound). There was an impression that I felt light. On the other hand, the thing of Example 1 also has the impression that the sound of a heavy bass is good and feels the sound which looks like a body, and represents that the sound with a sense of presence has come out.

Figure 2009088942
Figure 2009088942

本発明の第１実施形態に係るイヤホン装置を示す斜視図。The perspective view which shows the earphone apparatus which concerns on 1st Embodiment of this invention. 同じくイヤホン装置のイヤホン部を示す分解斜視図。The disassembled perspective view which similarly shows the earphone part of an earphone apparatus. 同じくイヤホン部を示す縦断面図。The longitudinal cross-sectional view which similarly shows an earphone part. 同じくイヤホン装置を耳に挿着した状態を示す説明図。Explanatory drawing which similarly shows the state which inserted the earphone apparatus in the ear | edge. 同じくイヤホン装置の電気信号の入出力を示す説明図。Explanatory drawing which similarly shows the input / output of the electric signal of an earphone apparatus. 本発明の第２実施形態に係るイヤホン部を示す分解斜視図。The disassembled perspective view which shows the earphone part which concerns on 2nd Embodiment of this invention. 同じくイヤホン装置のイヤホン部を示す縦断面図。The longitudinal cross-sectional view which similarly shows the earphone part of an earphone apparatus. 本発明の第３実施形態に係るイヤホン部を示す斜視図。The perspective view which shows the earphone part which concerns on 3rd Embodiment of this invention. 同じくイヤホン装置のイヤホン部を示す縦断面図。The longitudinal cross-sectional view which similarly shows the earphone part of an earphone apparatus. 受聴音質に関する比較試験の結果を示すグラフ。The graph which shows the result of the comparison test regarding listening sound quality.

符号の説明Explanation of symbols

１ イヤホン装置
２ イヤホン部
３ 音響出力部
４ 骨伝導ドライバー
５ 筐体
６ 出力調整部
７ プラグ部
３０ 音響ドライバーユニット
４１ コイル
４２ 第１のマグネット
４３ 第２のマグネット
４４ 第１のプレート
４５ 第２のプレート
４６ 基盤
４７ 振動リング
５０ 耳挿着部
５０ａ 開口部
５１ 骨伝導収納部
５１ａ 開口部
５２ コード保持部
５３ 蓋部材
５４ 頸部
６０ コード
６１ 接続コード
６２ 第１の出力調整部
６３ 第２の出力調整部 DESCRIPTION OF SYMBOLS 1 Earphone apparatus 2 Earphone part 3 Acoustic output part 4 Bone conduction driver 5 Case 6 Output adjustment part 7 Plug part 30 Acoustic driver unit 41 Coil 42 1st magnet 43 2nd magnet 44 1st plate 45 2nd plate 46 base 47 vibration ring 50 ear insertion part 50a opening 51 bone conduction storage part 51a opening 52 cord holding part 53 lid member 54 neck 60 cord 61 connection cord 62 first output adjustment part 63 second output adjustment part

Claims (5)

筐体耳挿入側に音響出力部を設け、前記筐体内における前記音響出力部の後方に骨伝導ドライバーを設け、前記音響出力部より耳内に音響信号を出力するとともに、前記骨伝導ドライバーより前記筐体を通じて耳内壁に振動信号を出力することを特徴とするイヤホン装置。   An acoustic output unit is provided on the housing ear insertion side, a bone conduction driver is provided behind the acoustic output unit in the housing, an acoustic signal is output from the acoustic output unit into the ear, and the bone conduction driver An earphone device that outputs a vibration signal to an inner wall of an ear through a housing. 前記骨伝導ドライバーを前記音響信号出力部と同軸上に設けてなる請求項１記載のイヤホン装置。   The earphone device according to claim 1, wherein the bone conduction driver is provided coaxially with the acoustic signal output unit. 前記音響出力部及び前記骨伝導ドライバーに送る信号出力の大きさを調整するための出力調整手段を設け、前記出力調整手段を前記音響出力部に送る信号出力を調整する第１の出力調整部と、前記骨伝導ドライバーに送る信号出力を調整する第２の出力調整部とを設けてなる請求項１または２記載のイヤホン装置。   A first output adjusting unit for adjusting a signal output to be sent to the acoustic output unit; and an output adjusting unit for adjusting a magnitude of a signal output to be sent to the acoustic output unit and the bone conduction driver; The earphone device according to claim 1, further comprising: a second output adjustment unit that adjusts a signal output to be sent to the bone conduction driver. 前記第１の出力調整部の最小出力値を、１５〜４０デシベル以上の値に設定してなる請求項３記載のイヤホン装置。   The earphone device according to claim 3, wherein a minimum output value of the first output adjustment unit is set to a value of 15 to 40 decibels or more. 前記骨伝導ドライバーを筐体後方の内壁面に当接して設け、該内壁を通じて筐体全体に前記振動信号を出力してなる請求項１〜４のいずれか１項に記載のイヤホン装置。

The earphone device according to claim 1, wherein the bone conduction driver is provided in contact with an inner wall surface at the rear of the housing, and the vibration signal is output to the entire housing through the inner wall.

JP2007255335A 2007-09-28 2007-09-28 Earphone apparatus Pending JP2009088942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007255335A JP2009088942A (en) 2007-09-28 2007-09-28 Earphone apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007255335A JP2009088942A (en) 2007-09-28 2007-09-28 Earphone apparatus

Publications (1)

Publication Number Publication Date
JP2009088942A true JP2009088942A (en) 2009-04-23

Family

ID=40661780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007255335A Pending JP2009088942A (en) 2007-09-28 2007-09-28 Earphone apparatus

Country Status (1)

Country Link
JP (1) JP2009088942A (en)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012083551A1 (en) * 2010-12-24 2012-06-28 Jin Zaishan Bone conduction earphone
WO2014041613A1 (en) * 2012-09-11 2014-03-20 パイオニア株式会社 Earphones
JP2014143582A (en) * 2013-01-24 2014-08-07 Nippon Hoso Kyokai <Nhk> Communication device
JP2015053640A (en) * 2013-09-09 2015-03-19 株式会社ファインウェル Stereo earphone
CN106714022A (en) * 2016-12-27 2017-05-24 深圳市八达晟电子有限公司 Bone conductive game earphone and control method thereof
WO2017168903A1 (en) * 2016-03-29 2017-10-05 ソニー株式会社 Sound reproducing device
JP2017192093A (en) * 2016-04-15 2017-10-19 株式会社ファインウェル Stereo earphone and stereo head set
US9980024B2 (en) 2011-02-25 2018-05-22 Rohm Co., Ltd. Hearing system and finger ring for the hearing system
US10013862B2 (en) 2014-08-20 2018-07-03 Rohm Co., Ltd. Watching system, watching detection device, and watching notification device
CN108496345A (en) * 2016-01-19 2018-09-04 罗姆股份有限公司 Pen type incoming call outgoing call device
US10075574B2 (en) 2013-08-23 2018-09-11 Rohm Co., Ltd. Mobile telephone
US10079925B2 (en) 2012-01-20 2018-09-18 Rohm Co., Ltd. Mobile telephone
US10103766B2 (en) 2013-10-24 2018-10-16 Rohm Co., Ltd. Wristband-type handset and wristband-type alerting device
JP2018170810A (en) * 2014-10-30 2018-11-01 ソニー株式会社 Sound output device
US10158947B2 (en) 2012-01-20 2018-12-18 Rohm Co., Ltd. Mobile telephone utilizing cartilage conduction
WO2018230880A1 (en) * 2017-06-13 2018-12-20 최남식 Earset having built-in bone conduction speaker
US10356231B2 (en) 2014-12-18 2019-07-16 Finewell Co., Ltd. Cartilage conduction hearing device using an electromagnetic vibration unit, and electromagnetic vibration unit
KR102113928B1 (en) * 2018-12-14 2020-05-20 최남식 Sound transmission device that transmits sound using vibration of bone conduction speaker and Earset with built-in bone conduction speaker
KR20200074059A (en) * 2018-12-14 2020-06-24 최남식 Sound transmission device that transmits sound using vibration of bone conduction speaker and Earset with built-in bone conduction speaker
US10779075B2 (en) 2010-12-27 2020-09-15 Finewell Co., Ltd. Incoming/outgoing-talk unit and incoming-talk unit
US10795321B2 (en) 2015-09-16 2020-10-06 Finewell Co., Ltd. Wrist watch with hearing function
US10967521B2 (en) 2015-07-15 2021-04-06 Finewell Co., Ltd. Robot and robot system
JP2022031060A (en) * 2020-08-07 2022-02-18 興弘 小林 Electroacoustic actuator
US11526033B2 (en) 2018-09-28 2022-12-13 Finewell Co., Ltd. Hearing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06269074A (en) * 1993-03-16 1994-09-22 Hiroshi Yoshino Headphone or earphone vibrated in matching with sound
JPH07288887A (en) * 1994-02-22 1995-10-31 Matsushita Electric Ind Co Ltd Headphone
JP2001245384A (en) * 2000-02-28 2001-09-07 Nippon Telegraph & Telephone East Corp Hybrid receiver
WO2008140149A1 (en) * 2007-05-15 2008-11-20 Ifeelu Inc. Small-sized sound receiver for producing body-sensing vibration

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06269074A (en) * 1993-03-16 1994-09-22 Hiroshi Yoshino Headphone or earphone vibrated in matching with sound
JPH07288887A (en) * 1994-02-22 1995-10-31 Matsushita Electric Ind Co Ltd Headphone
JP2001245384A (en) * 2000-02-28 2001-09-07 Nippon Telegraph & Telephone East Corp Hybrid receiver
WO2008140149A1 (en) * 2007-05-15 2008-11-20 Ifeelu Inc. Small-sized sound receiver for producing body-sensing vibration

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012083551A1 (en) * 2010-12-24 2012-06-28 Jin Zaishan Bone conduction earphone
US10779075B2 (en) 2010-12-27 2020-09-15 Finewell Co., Ltd. Incoming/outgoing-talk unit and incoming-talk unit
US9980024B2 (en) 2011-02-25 2018-05-22 Rohm Co., Ltd. Hearing system and finger ring for the hearing system
US10079925B2 (en) 2012-01-20 2018-09-18 Rohm Co., Ltd. Mobile telephone
US10778823B2 (en) 2012-01-20 2020-09-15 Finewell Co., Ltd. Mobile telephone and cartilage-conduction vibration source device
US10158947B2 (en) 2012-01-20 2018-12-18 Rohm Co., Ltd. Mobile telephone utilizing cartilage conduction
US10834506B2 (en) 2012-06-29 2020-11-10 Finewell Co., Ltd. Stereo earphone
US10506343B2 (en) 2012-06-29 2019-12-10 Finewell Co., Ltd. Earphone having vibration conductor which conducts vibration, and stereo earphone including the same
WO2014041613A1 (en) * 2012-09-11 2014-03-20 パイオニア株式会社 Earphones
JP2014143582A (en) * 2013-01-24 2014-08-07 Nippon Hoso Kyokai <Nhk> Communication device
US10237382B2 (en) 2013-08-23 2019-03-19 Finewell Co., Ltd. Mobile telephone
US10075574B2 (en) 2013-08-23 2018-09-11 Rohm Co., Ltd. Mobile telephone
JP2015053640A (en) * 2013-09-09 2015-03-19 株式会社ファインウェル Stereo earphone
US10103766B2 (en) 2013-10-24 2018-10-16 Rohm Co., Ltd. Wristband-type handset and wristband-type alerting device
US10380864B2 (en) 2014-08-20 2019-08-13 Finewell Co., Ltd. Watching system, watching detection device, and watching notification device
US10013862B2 (en) 2014-08-20 2018-07-03 Rohm Co., Ltd. Watching system, watching detection device, and watching notification device
US10659863B2 (en) 2014-10-30 2020-05-19 Sony Corporation Sound output device and sound guiding device
JP2018170810A (en) * 2014-10-30 2018-11-01 ソニー株式会社 Sound output device
US11601538B2 (en) 2014-12-18 2023-03-07 Finewell Co., Ltd. Headset having right- and left-ear sound output units with through-holes formed therein
US10356231B2 (en) 2014-12-18 2019-07-16 Finewell Co., Ltd. Cartilage conduction hearing device using an electromagnetic vibration unit, and electromagnetic vibration unit
US10848607B2 (en) 2014-12-18 2020-11-24 Finewell Co., Ltd. Cycling hearing device and bicycle system
US10967521B2 (en) 2015-07-15 2021-04-06 Finewell Co., Ltd. Robot and robot system
US10795321B2 (en) 2015-09-16 2020-10-06 Finewell Co., Ltd. Wrist watch with hearing function
CN108496345A (en) * 2016-01-19 2018-09-04 罗姆股份有限公司 Pen type incoming call outgoing call device
CN108496345B (en) * 2016-01-19 2021-02-26 株式会社精好 Pen type calling-in and calling-out communication device
US10778824B2 (en) 2016-01-19 2020-09-15 Finewell Co., Ltd. Pen-type handset
JPWO2017168903A1 (en) * 2016-03-29 2019-02-07 ソニー株式会社 Sound playback device
WO2017168903A1 (en) * 2016-03-29 2017-10-05 ソニー株式会社 Sound reproducing device
US11240588B2 (en) 2016-03-29 2022-02-01 Sony Corporation Sound reproducing apparatus
JP2017192093A (en) * 2016-04-15 2017-10-19 株式会社ファインウェル Stereo earphone and stereo head set
CN106714022A (en) * 2016-12-27 2017-05-24 深圳市八达晟电子有限公司 Bone conductive game earphone and control method thereof
KR101937032B1 (en) * 2017-06-13 2019-01-09 최남식 Earset with bone conduction speaker
WO2018230880A1 (en) * 2017-06-13 2018-12-20 최남식 Earset having built-in bone conduction speaker
US11526033B2 (en) 2018-09-28 2022-12-13 Finewell Co., Ltd. Hearing device
KR20200074059A (en) * 2018-12-14 2020-06-24 최남식 Sound transmission device that transmits sound using vibration of bone conduction speaker and Earset with built-in bone conduction speaker
KR102113928B1 (en) * 2018-12-14 2020-05-20 최남식 Sound transmission device that transmits sound using vibration of bone conduction speaker and Earset with built-in bone conduction speaker
KR102261766B1 (en) 2018-12-14 2021-06-09 최남식 Sound transmission device that transmits sound using vibration of bone conduction speaker and Earset with built-in bone conduction speaker
JP2022031060A (en) * 2020-08-07 2022-02-18 興弘 小林 Electroacoustic actuator

Similar Documents

Publication Publication Date Title
JP2009088942A (en) Earphone apparatus
US11240588B2 (en) Sound reproducing apparatus
US10034076B2 (en) Earphone
US8891799B2 (en) Earphone
EP2434776B1 (en) Earphone
US20170111728A1 (en) Bone conduction speaker module and bone conduction earphones having bone conduction speaker modules
CN106465009B (en) Ear is inserted into equipment
US20190253783A1 (en) Earphone
KR20100108871A (en) A dual earphone have the bone conductive and the air conductive
CN105612760A (en) Bone Conduction Speaker
JP6631530B2 (en) Sound output device
TW201521457A (en) Headphone-type acoustic device
JP7101030B2 (en) Electroacoustic transducer, electroacoustic transducer with adapter and acoustic equipment
JP2014232905A (en) Earphone and hearing device using the same
JP2012244350A (en) Canal-type earphone
JP2020025341A (en) Earpiece and earphone using the same
JP2008270879A (en) Receiver
JP2010016792A (en) Earphone
KR20060043937A (en) Ear-phone
KR101387944B1 (en) In-ear earphone
US9906850B2 (en) Headphone unit
JP2017147533A (en) earphone
JP2017103618A (en) Inner Earphone
KR101123864B1 (en) Piezoelectric element type bone conduction earphone supported by bobbin
US20100232629A1 (en) Sound vibrator having tuning fork

Legal Events

Date Code Title Description
A621 Written request for application examination

Effective date: 20100913

Free format text: JAPANESE INTERMEDIATE CODE: A621

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120511

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120522

A02 Decision of refusal

Effective date: 20121002

Free format text: JAPANESE INTERMEDIATE CODE: A02