JPH0244899A - Inner-ear type head phone - Google Patents
Inner-ear type head phoneInfo
- Publication number
- JPH0244899A JPH0244899A JP19493288A JP19493288A JPH0244899A JP H0244899 A JPH0244899 A JP H0244899A JP 19493288 A JP19493288 A JP 19493288A JP 19493288 A JP19493288 A JP 19493288A JP H0244899 A JPH0244899 A JP H0244899A
- Authority
- JP
- Japan
- Prior art keywords
- main body
- sound
- center axis
- central axis
- rear part
- 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
Links
- 210000003027 ear inner Anatomy 0.000 title claims description 7
- 210000000613 ear canal Anatomy 0.000 claims description 22
- 241000746998 Tragus Species 0.000 claims description 8
- 230000006866 deterioration Effects 0.000 abstract description 5
- 210000000624 ear auricle Anatomy 0.000 description 5
- 238000013459 approach Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Landscapes
- Headphones And Earphones (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、高音発生用スピーカと低音発生相スピーカと
を備えた２ドライブ方式のインナーイヤー型ヘッドホン
に関するものて゛ある。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a two-drive type inner-ear headphone equipped with a high-frequency sound generating speaker and a low-frequency sound generating phase speaker.
従来の技術
近年、インナーイヤー型ヘッドホン（以下ロインナーホ
ン」と略称する。）においても音質の向上が要求され、
高音発生用スピーカ（ツイータ）と低音発生用スピーカ
（ウーハ）の２個のスピーカを備えた２ドライブ方式の
ものが注目を集めている。この２ドライブ方式のインナ
ーホンにおいて、既に商品化されている基本的な構造は
第４図に示すとおり、ツイータ（１ａ）を装備し、使用
状態において耳孔に挿入されるべき本体前部（１）と、
ウーハ（２ａ）を装備した本体後部（２）と、使用状態
において耳孔の中心軸に対しほぼ直角に延びるように、
前記本体後部の周面から突設された入力線インレット部
（３）とを備え、さらに、本体後部から本体前部にかけ
てツイータ（１）に隣接した音道（４）を形成したもの
である。なお、本体前部にはツイータ（１）の正面及び
音道（４）の正面に対応する音孔（５）が形成され、外
周壁にはゴムバット（６）が装着されている。上記の２
ドライブ方式のインナーホン構造においては、入力イン
レット部（３）より入力された音信号の高音域をツイー
タ（１ａ）により発生させ、また低音域はウーハ〈２ａ
）により発生させ、これらを音孔（５）より同時に放出
するものである。Conventional technology In recent years, there has been a demand for improved sound quality in inner-ear headphones (hereinafter referred to as inner-ear headphones).
A two-drive system that has two speakers, a high-frequency speaker (tweeter) and a low-frequency speaker (woofer), is attracting attention. The basic structure of this two-drive type innerphone, which has already been commercialized, is as shown in Figure 4, which is equipped with a tweeter (1a) and a front part (1) of the main body that is inserted into the ear canal when in use. and,
The rear part (2) of the main body is equipped with a woofer (2a), and extends almost perpendicularly to the central axis of the ear canal in the state of use.
The device includes an input line inlet portion (3) protruding from the peripheral surface of the rear portion of the main body, and further includes a sound path (4) adjacent to the tweeter (1) extending from the rear portion of the main body to the front portion of the main body. Note that a sound hole (5) corresponding to the front of the tweeter (1) and the front of the sound path (4) is formed in the front part of the main body, and a rubber bat (6) is attached to the outer peripheral wall. 2 above
In the drive-type innerphone structure, the high frequency range of the sound signal input from the input inlet section (3) is generated by the tweeter (1a), and the low frequency range is generated by the woofer (2a).
) and emit them simultaneously from the sound hole (5).
発明が解決しようとする課題
しかしながら、」−記のような２ドライブ型インナーホ
ンの構造においては、第５図Ａ及びＢにそれぞれ示すよ
うに、本体前部すなわちツイータ部（１）を耳孔（正確
には第５図Ｂに（１０ａ ）で示す外耳道入口）に挿入
しようとするとき、後部すなわちウーハ部（２）の正面
側における中心軸よりやや低い縁部（２ｂ）が耳介部の
耳珠（１０ｂ）や対珠（１０Ｃ）に当接し、挿入不完全
となるため、インナーホンの音孔（５）は耳孔（１０ａ
）を密閉できず、耳孔の隙間からは音が洩れ、音質及
び音圧の劣化にっながっていた。Problems to be Solved by the Invention However, in the structure of the two-drive inner phone as described above, as shown in FIGS. 5A and B, the front part of the main body, that is, the tweeter part (1) is When attempting to insert it into the external auditory canal entrance (as shown in Figure 5B (10a)), the edge (2b) slightly lower than the central axis on the rear, i.e., front side of the woofer part (2) will be inserted into the tragus of the auricle. (10b) and the antitragus (10C), resulting in incomplete insertion.
) could not be sealed tightly, and sound leaked from the gap in the ear canal, leading to deterioration of sound quality and sound pressure.
さらに、インナーホンの前部が耳孔に入りきらないため
外れやすく、また、装着の違和感もしくは不快感が生ず
るなどの問題があった。Furthermore, since the front part of the inner phone does not fit into the ear canal, it is easy to come off, and there are other problems such as discomfort or discomfort when wearing the earphone.
本発明は、これらの問題点を解消した２ドライブ方式の
インナーホンを提供しようとするものである。The present invention aims to provide a two-drive inner phone that solves these problems.
課題を解決するための手段
このため、本発明は、高音発生用スピーカを装備し、使
用状態において耳孔に挿入すべき本体前部と、低音発生
用スピーカを装備した本体後部と、使用状態において耳
孔の中心軸に対しほぼ直角に延びるように、前記本体後
部の周面から突設された入力線インレット部とを備え、
前記本体後部の中心軸をその後側が前記インレット部の
突出方向とほぼ逆の方向に片寄るように、前記本体前部
の中心軸に対して傾けたことにより、前記本体後部のイ
ンレット部突設側部分を他の部分よりも大きく本体前部
から後退させたことを特徴とするインナーイヤー型へッ
トホンを構成したものである。Means for Solving the Problems Therefore, the present invention provides a front part of the main body that is equipped with a speaker for generating high-pitched sound and should be inserted into the ear canal in the state of use, a rear part of the main body equipped with a speaker for generating low sound, and a part that is inserted into the ear canal in the state of use. an input line inlet portion protruding from the circumferential surface of the rear portion of the main body so as to extend substantially perpendicularly to the central axis of the main body, the rear side of the input line inlet portion extending substantially perpendicularly to the central axis of the main body rear portion; The main body is tilted with respect to the central axis of the front part of the main body so as to be offset in the direction, so that the inlet portion protruding side part of the rear part of the main body is set back from the front part of the main body to a greater extent than other parts. This is an inner-ear type headphone.
作 用
上記の構成によれば、ツイータ部の中心軸に対し、ウー
ハ部の中心軸を耳孔装着時において耳たぶの反対側とな
る位置へ傾けであるため、従来のように、前部−後部同
軸型であれば、耳介下部における耳珠及び対珠に接近し
ていたウーハ部分（下半部）はこれらの耳介下部から離
され、逆に耳介上部に対し余裕のあったウーハ部分（上
半部）は対応する耳介部分に近付けられる。このため、
インナーホン装着時においては、ウーハ部の正面縁部が
耳介各部に近接もしくは緩接触するまでにツイータ部を
外耳道へ十分深く挿入し、音洩れによる音質または音圧
の劣化を生じないようにすることができる。また、前記
中心軸の傾きにより、ウーハ部分は耳介部中で表面が奥
まった部分、すなわち耳孔の上方、又は耳たぶと反対側
の耳部分に対しては接近するため、装着フィツト性がよ
く、装着の違和感もしくは不快感をも解消するものであ
る。Function According to the above configuration, the central axis of the woofer part is tilted to the position opposite to the earlobe when the ear canal is attached to the central axis of the tweeter part, so that the front-rear coaxial If it is a type, the woofer part (lower half) that was close to the tragus and antitragus at the lower part of the auricle will be separated from these lower parts of the auricle, and conversely, the woofer part (lower half) that was close to the tragus and antitragus will be moved away from the upper part of the auricle ( The upper half) is brought closer to the corresponding pinna part. For this reason,
When wearing an inner phone, insert the tweeter section deep enough into the ear canal before the front edge of the woofer section approaches or makes loose contact with each part of the auricle to prevent sound quality or sound pressure from deteriorating due to sound leakage. be able to. In addition, due to the inclination of the central axis, the woofer portion approaches the recessed part of the auricle, that is, the upper part of the ear canal or the part of the ear on the opposite side of the earlobe, so the fit is good. This also eliminates the discomfort or discomfort of wearing the device.
実 施 例
本発明の一実施例の構造は第１図Ａ及びＢに示すとおり
である。第１図の構造中、第４図に示した従来型構造と
同じ部分については、同一の参照数字を付して説明する
。ウーハ（２ａ）を装着した本体後部（２）の中心軸（
７）は本体前部の中心軸（８）に対しその後側がインレ
ット部（３）の突出方向とほぼ逆の方向に変位するよう
に角度Ｐだけ傾けたことにより、前記本体後部における
少くとも下半部の正面側縁部（２ｂ）を他の半部（２Ｃ
）よりも大きく、本体前部から後退させたものである。Embodiment The structure of an embodiment of the present invention is as shown in FIGS. 1A and 1B. In the structure of FIG. 1, the same parts as the conventional structure shown in FIG. 4 will be described with the same reference numerals. The center axis (
7) is tilted by an angle P so that the rear side is displaced in a direction substantially opposite to the protruding direction of the inlet part (3) with respect to the central axis (8) of the front part of the main body, so that at least the lower half of the rear part of the main body The front side edge (2b) of the other half (2C
) and is set back from the front of the main body.
なお、ツイータ（１ａ）自体の中心軸（８ａ〉はこの場
合、第１図Ｂに示すとおり、インレット部（３）の反対
側に密集して設けられた音道（４）の存在により、本体
前部の中心軸（８）よりもややインレット部（３）側に
平行移動している。Note that the central axis (8a) of the tweeter (1a) itself is in this case, as shown in FIG. It is slightly moved in parallel to the inlet part (3) side with respect to the central axis (8) of the front part.
実施例の２ドライブ方式インナーホンは、上記のように
本体後部（２）を傾けたため、本体全部（１）を第２図
Ａ及びＢに示すように、耳孔すなわち外耳道入口（１０
ａ）に挿入すると、本体後部における側縁部（２ｂ）が
耳珠（１０ｂ ）及び対珠（１０ｃ ）に当接するまで
に、本体前部の音孔（５）が外耳道入口（１０ａ ）を
完全に寒くため、音洩れによる音質及び音圧の劣化を完
全に防止することができる。In the two-drive type innerphone according to the embodiment, the rear part (2) of the main body is tilted as described above, so that the entire main body (1) is aligned with the ear canal, that is, the entrance of the external auditory canal (10), as shown in FIGS.
a), by the time the side edge (2b) at the rear of the main unit comes into contact with the tragus (10b) and the antitragus (10c), the sound hole (5) at the front of the main unit has completely passed the entrance to the external auditory canal (10a). Because the climate is so cold, deterioration in sound quality and sound pressure due to sound leakage can be completely prevented.
さらに、本体前部が耳孔に十分深く入るため、耳介部の
上側部分における奥まった個所（１０ｅ）、（１０ｆ
）には本体後部（２）が接近し、インナーホン全体とし
て耳介部におさまった配置となるため、外れに＜＜、か
つ違和感も生しなくなる。Furthermore, since the front part of the main body enters the ear canal sufficiently deep, the upper part of the auricle is recessed (10e) and (10f).
) is closer to the rear part of the main body (2), and the inner phone as a whole is placed in the pinna of the ear, so it will not come off easily and will not cause any discomfort.
また、ウーハ（２ａ）から延びる音道（４）は前記中心
軸の傾きにより本体前部（１〉に接近する側に設けられ
ているため、全長が短くなり、したがって、ウーハ（２
ａ）の発生ずる低音域の音圧を上昇せしめるものである
。Furthermore, since the sound path (4) extending from the woofer (2a) is provided on the side approaching the front part (1) of the main body due to the inclination of the central axis, the overall length is shortened, and therefore the sound path (4) extending from the woofer (2a) is shortened.
This increases the sound pressure in the low frequency range where a) is generated.
第３図は、本発明のさらに別の実施例を示すものである
。この実施例のインナーホンは本体後部（２）の中心軸
が前記実施例の如く角度（Ｐ）だけインレット部（３）
の反対側に傾いていることはもちろん、横方向すなわち
インレット部突出方向から９０”隔った横方向において
も耳珠（１０ｂ ）側に偏角Ｑで傾き、本体前部を耳孔
入口（１０ａ ）に挿入したとき、本体前後部間の中継
部（９）における側部（９ａ）及び（９ｂ）がそれぞれ
耳珠（１０ｂ）及び対珠（１０ｃ ）を緩（挾むような
状態となり、さらに、装着フィツト性のよいインナーホ
ン形状を提供するものである。FIG. 3 shows yet another embodiment of the invention. In the inner phone of this embodiment, the central axis of the rear part (2) of the main body is connected to the inlet part (3) by an angle (P) as in the previous embodiment.
Not only is it tilted to the opposite side, but also in the lateral direction, that is, 90 inches away from the inlet protrusion direction, it is tilted at an angle Q toward the tragus (10b), and the front part of the body is tilted toward the ear canal entrance (10a). When inserted into the body, the side parts (9a) and (9b) of the relay part (9) between the front and rear parts of the main body come into a state where they loosely (pinches) the tragus (10b) and the anti-tragus (10c), respectively, and This provides an inner phone shape with good fit.
発明の効果
本発明は、以上述べた通り、耳孔に挿入される本体前部
の中心軸に対し、ウーハを挿入した本体後部の中心部を
入力線インレット部と反対側の方向へ傾けることにより
、本体後部の正面側縁が耳介部各所に近接もしくは緩接
触する状態において、十分な深さまて挿入された本体前
部によって耳孔を完全に塞ぐため、音洩れによる音質の
劣化及び音圧の低下を完全に阻止するものである。また
、本体後部の傾きにより耳介部の奥まった上側部分にも
本体後部が近接するため、インナーホン全体として中継
部内に装着された配置となり、外れそうな感じや違和感
を完全に解消するものである。Effects of the Invention As described above, the present invention provides the following advantages: by tilting the central part of the rear part of the main body into which the woofer is inserted in the direction opposite to the input line inlet part with respect to the central axis of the front part of the main body which is inserted into the ear canal; When the front side edge of the rear part of the main unit is in close proximity or loose contact with various parts of the auricle, the front part of the main unit inserted to a sufficient depth completely blocks the ear canal, resulting in sound quality deterioration and sound pressure reduction due to sound leakage. This completely prevents In addition, due to the inclination of the rear part of the main unit, the rear part of the main unit is close to the recessed upper part of the auricle, so the entire earphone is placed inside the relay part, completely eliminating the feeling that it might come off or feel strange. be.
第１図Ａは本発明の一実施例を示す半断面側面図、
第１図Ｂはその正面図、
第２図Ａは」１記実施例のインナーホンを耳孔に挿入し
ようとする状態を示す斜視図、
第２図Ｂはその装着状態の側断面図、
第３図は本発明の別の実施例を示す側断面図、第４図は
従来の２ドライブ方式のインナーホンを示す側断面図、
第５図Ａ及びＢは第４図の従来型インナーホンを耳孔に
装着した状態をそれぞれ示す正面図及び側断面図である
。
（１）・・・・・・・・・・・・・・・・・・・・・本
体前部（１ａ）・・・・・・・・・・・・・・・・・・
ツイータ（２）・・・・・・・・・・・・・・・・・・
・・・本体後部（２ａ）・・・・・・・・・・・・・・
・・・・ウーハ（３）・・・・・・・・・・・・・・・
・・・・・・インレット部（４）・・・・・・・・・・
・・・・・・・・・・音道（５）・・・・・・・・・・
・・・・・・・・・・・音孔（６）・・・・・・・・・
・・・・・・・・・・・・ゴムパッド（７）・・・・・
・・・・・・・・・・・・・・・・本体後部の中心軸〈
８）・・・・・・・・・・・・・・・・・・・・・本体
前部の中心軸（９）・・・・・・・・・・・・・・・・
・・・・・中継部（１０ａ）・・・・・・・・・・・・
・・・・・・外耳道入口（１０ｂ）・・・・・・・・・
・・・・・・・・・耳珠（１０Ｃ）・・・・・・・・・
・・・・・・・・・対珠（１０，ｄ）・・・・・・・・
・・・・・・・・・・耳たぶ（１０ｅ）、（１０ｆ ）
・・・・・・耳介部の奥まった個所時
許出願人 松下電器産業株式会社
第
図
第
図
第
図FIG. 1A is a half-sectional side view showing one embodiment of the present invention, FIG. 1B is a front view thereof, and FIG. 2A is a state in which the inner phone of the embodiment 1 is about to be inserted into the ear canal. A perspective view, FIG. 2B is a side sectional view of the installed state, FIG. 3 is a side sectional view showing another embodiment of the present invention, and FIG. 4 is a side sectional view showing a conventional two-drive inner phone. FIGS. 5A and 5B are a front view and a side sectional view, respectively, showing the conventional inner phone of FIG. 4 installed in the ear canal. (1)・・・・・・・・・・・・・・・・・・Front part of main body (1a)・・・・・・・・・・・・・・・・・・
Tweeter (2)・・・・・・・・・・・・・・・・・・
・・・Rear part of main body (2a)・・・・・・・・・・・・・・・
・・・Wuha (3)・・・・・・・・・・・・・・・
・・・・・・Inlet part (4)・・・・・・・・・
・・・・・・・・・Ondou (5)・・・・・・・・・・・・
・・・・・・・・・・・・Sound hole (6)・・・・・・・・・
・・・・・・・・・Rubber pad (7)・・・・・・
・・・・・・・・・・・・・・・・・・Center axis at the rear of the main unit
8)・・・・・・・・・・・・・・・・・・・・・ Center axis of the front part of the main body (9)・・・・・・・・・・・・・・・・・・
・・・・・・Relay part (10a)・・・・・・・・・・・・
・・・・・・Entrance of external auditory canal (10b)・・・・・・・・・
...... Tragus (10C) ......
・・・・・・・・・Top beads (10, d)・・・・・・・・・
・・・・・・・・・Earlobe (10e), (10f)
...Recessed part of the auricle Applicant: Matsushita Electric Industrial Co., Ltd.
Claims (2)
耳孔に挿入すべき本体前部と、低音発生用スピーカを装
備した本体後部と、使用状態において耳孔の中心軸に対
しほぼ直角に延びるように、前記本体後部の周面から突
設された入力線インレット部とを備え、 前記本体後部の中心軸をその後側が前記インレット部の
突出方向とほぼ逆の方向に片寄るように、前記本体前部
の中心軸に対して傾けたことにより、前記本体後部のイ
ンレット部突設側部分を他の部分よりも大きく本体前部
から後退させたことを特徴とするインナーイヤー型ヘッ
ドホン。(1) The front part of the main unit is equipped with a speaker for generating high-pitched sounds and should be inserted into the ear canal when in use, the rear part of the main unit is equipped with a speaker for generating low-pitched sounds, and the rear part of the main unit is equipped with a speaker for producing high-pitched sounds and extends approximately perpendicular to the central axis of the ear canal when in use. , an input line inlet portion protruding from the circumferential surface of the rear portion of the main body, and an input line inlet portion of the front portion of the main body such that the central axis of the rear portion of the main body is biased on the rear side in a direction substantially opposite to the protruding direction of the inlet portion. 1. An inner-ear headphone characterized in that, by being tilted with respect to a central axis, the inlet protruding side portion of the rear portion of the main body is set back from the front portion of the main body to a greater extent than other portions.
心軸に対し前記低音発生用スピーカを装備した本体後部
の中心軸を、使用状態においてその本体後部の輪郭が耳
珠の側に片寄るように傾けたことを特徴とする請求項１
に記載のインナーイヤー型ヘッドホン。(2) Align the center axis of the rear part of the main body equipped with the low-pitched sound generating speaker with respect to the central axis of the front part of the main body equipped with the high-pitched sound generating speaker so that the contour of the rear part of the main body is biased toward the tragus in use. Claim 1 characterized in that it is tilted to
The inner-ear headphones described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19493288A JPH0244899A (en) | 1988-08-04 | 1988-08-04 | Inner-ear type head phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19493288A JPH0244899A (en) | 1988-08-04 | 1988-08-04 | Inner-ear type head phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0244899A true JPH0244899A (en) | 1990-02-14 |
Family
ID=16332739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19493288A Pending JPH0244899A (en) | 1988-08-04 | 1988-08-04 | Inner-ear type head phone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244899A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5949896A (en) * | 1996-08-19 | 1999-09-07 | Sony Corporation | Earphone |
| JP2009219122A (en) * | 2008-03-12 | 2009-09-24 | Akg Acoustics Gmbh | In-ear earphone |
| JP4503685B1 (en) * | 2009-05-21 | 2010-07-14 | 株式会社オーディオテクニカ | earphone |
| JP4523065B1 (en) * | 2009-05-21 | 2010-08-11 | 株式会社オーディオテクニカ | earphone |
| WO2010134313A1 (en) * | 2009-05-21 | 2010-11-25 | 株式会社オーディオテクニカ | Earphone |
| CN102119535A (en) * | 2009-05-13 | 2011-07-06 | 松下电器产业株式会社 | Earphone device and earphone device body |
| WO2011114688A1 (en) | 2010-03-18 | 2011-09-22 | パナソニック株式会社 | Speaker, hearing aid, earphone, and portable terminal device |
| JP4913256B1 (en) * | 2011-07-05 | 2012-04-11 | 勇 小泉 | Earpiece for canal type receiver, canal type receiver using the earpiece, and stethoscope and hearing aid using the canal type receiver |
| JP2012085257A (en) * | 2010-10-06 | 2012-04-26 | Cotron Corp | Earphone |
| WO2012144040A1 (en) * | 2011-04-20 | 2012-10-26 | パイオニア株式会社 | Earphones |
-
1988
- 1988-08-04 JP JP19493288A patent/JPH0244899A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2254346A3 (en) * | 1996-08-19 | 2010-12-01 | Sony Corporation | Earphone |
| KR100487133B1 (en) * | 1996-08-19 | 2005-08-29 | 소니 가부시끼 가이샤 | earphone |
| US5949896A (en) * | 1996-08-19 | 1999-09-07 | Sony Corporation | Earphone |
| JP2009219122A (en) * | 2008-03-12 | 2009-09-24 | Akg Acoustics Gmbh | In-ear earphone |
| CN102119535A (en) * | 2009-05-13 | 2011-07-06 | 松下电器产业株式会社 | Earphone device and earphone device body |
| WO2010134313A1 (en) * | 2009-05-21 | 2010-11-25 | 株式会社オーディオテクニカ | Earphone |
| JP4523065B1 (en) * | 2009-05-21 | 2010-08-11 | 株式会社オーディオテクニカ | earphone |
| JP2010273137A (en) * | 2009-05-21 | 2010-12-02 | Audio Technica Corp | Earphone |
| JP2010273136A (en) * | 2009-05-21 | 2010-12-02 | Audio Technica Corp | Earphone |
| KR101287954B1 (en) * | 2009-05-21 | 2013-07-19 | 가부시기가이샤 오디오테크니카 | Earphone |
| JP4503685B1 (en) * | 2009-05-21 | 2010-07-14 | 株式会社オーディオテクニカ | earphone |
| EP2434776A1 (en) * | 2009-05-21 | 2012-03-28 | Kabushiki Kaisha Audio-Technica | Earphone |
| US20120076341A1 (en) * | 2009-05-21 | 2012-03-29 | Hiromichi Ozawa | Earphone |
| US8712087B2 (en) | 2009-05-21 | 2014-04-29 | Kabushiki Kaisha Audio-Technica | Earphone |
| EP2434776A4 (en) * | 2009-05-21 | 2013-11-13 | Audio Technica Kk | Earphone |
| WO2011114688A1 (en) | 2010-03-18 | 2011-09-22 | パナソニック株式会社 | Speaker, hearing aid, earphone, and portable terminal device |
| JPWO2011114688A1 (en) * | 2010-03-18 | 2013-06-27 | パナソニック株式会社 | Speaker, hearing aid, earphone, and portable terminal device |
| US8755558B2 (en) | 2010-03-18 | 2014-06-17 | Panasonic Corporation | Speaker, hearing aid, earphone, and portable terminal device |
| JP5879563B2 (en) * | 2010-03-18 | 2016-03-08 | パナソニックＩｐマネジメント株式会社 | Speaker, hearing aid, earphone, and portable terminal device |
| JP2012085257A (en) * | 2010-10-06 | 2012-04-26 | Cotron Corp | Earphone |
| WO2012144040A1 (en) * | 2011-04-20 | 2012-10-26 | パイオニア株式会社 | Earphones |
| JP4913256B1 (en) * | 2011-07-05 | 2012-04-11 | 勇 小泉 | Earpiece for canal type receiver, canal type receiver using the earpiece, and stethoscope and hearing aid using the canal type receiver |
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