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JP2005348193A - Receiver - Google Patents

Receiver

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JP2005348193A
JP2005348193A JP2004166644A JP2004166644A JP2005348193A JP 2005348193 A JP2005348193 A JP 2005348193A JP 2004166644 A JP2004166644 A JP 2004166644A JP 2004166644 A JP2004166644 A JP 2004166644A JP 2005348193 A JP2005348193 A JP 2005348193A
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sound
conduction
ear
receiver
transmission
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Yoshiyuki Abe
Yuji Hosoi
Mitsuo Tamura
光男 田村
裕司 細井
善幸 阿部
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Yuji Hosoi
Nec Tokin Corp
Necトーキン株式会社
裕司 細井
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Abstract

PROBLEM TO BE SOLVED: To provide a receiver which is audible with natural sound quality of high articulation regardless of a use environment high in external noise level, and issimple in handling.
SOLUTION: A vibrator 11 in the shape of rectangular plate as a sounding part used for a receiver includes a double path transmission function utilizing both an air-conduction first sound transmission path for transmitting sound information to the internal air via the external auditory miatus 21 and the middle ear and a cartilage-conduction second sound transmission path for transmitting sound information to the internal ear via an auricle cartilage and a temporal bone. When the receiver is mounted on a surface of a casing of a hand-held voice communication apparatus to be pressed from the front face of the ear to the auricle, pressure to the auricle 12 is controlled by controlling the power of the hand, and a ratio of air-conduction and cartilage-conduction sound transmission levels of sound information to be transmitted to the internal ear is changed.
COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、主として音声情報を発声して内耳へ伝達するための1つの音発声部を備えた受話器であって、詳しくは気導経由による経路と軟骨導経由による経路との両方を利用した双経路伝達機能を持つ受話器に関する。 Bi invention, which primarily uttered voice information a receiver with one of the sound utterance section for transmitting to the inner ear, specifically utilize both the pathways by way of path and cartilage electrically by via air conduction on the handset with a path transfer function.

従来、一般に受話器の基本機能としては、音発声部(スピーカ)を成す振動体の利用方法により気導方式のものと骨導方式のものとの2種類が知られている。 Conventionally, as a basic function of the general receiver, two types of things that the bone conduction system of the air conduction system is known by the usage of vibrating body forming a sound utterance section (speaker). 気導方式による受話器は、外耳道の入口部に振動体を当てて外耳道,鼓膜を含む中耳伝音系を介する気導経由で音声情報を内耳へ伝達するように設計されている。 Handset according to air conduction system is designed ear canal by applying a vibrator to the inlet portion of the ear canal, the audio information in air conduction via through the middle ear Den sound system including a tympanic membrane so as to transmit to the inner ear. 骨導方式による受話器は、耳の後ろの乳様突起部,下顎骨等の骨組織上の皮膚に振動子を圧着することにより骨組織を介して中耳伝音系を介さずに直接的に音声情報を内耳へ伝達するように設計されている。 Handset according bone conduction method, mastoid portion of the behind the ear, directly without passing through the middle ear Den sound system through the bone tissue by crimping the vibrator on the skin on the bone tissue, such as the mandible It is designed to transmit audio information to the inner ear.

気導方式による受話器は汎用的に多く使用されているが、骨導方式による受話器に関連する周知技術としては、例えば骨伝導ヘッドセットが挙げられる(特許文献1参照)。 Handset according to air conduction system has been used for general purposes often, as a well-known technology related to the handset by bone conduction type, include, for example, bone conduction headset (see Patent Document 1). この骨伝導ヘッドセットは、骨伝導スピーカを外耳道の入口部以外の場所に置き、外耳道を開放したままで骨導音による音声情報の聴取ができるようになっている。 The bone conduction headset, place in a location other than the inlet portion of the ear canal of the bone conduction speaker, which is to be able to listen to the voice information by bone conduction sound in the left open the ear canal.

特開2003−18683号公報(要約、第2頁〜第3頁、図4,図7) JP 2003-18683 discloses (abstract, page 2 - page 3, 4, 7)

上述した特許文献1に係る骨伝導ヘッドセットの場合、外耳道を開放したままで骨導音による音声情報を聴取するものであり、周囲に環境雑音があるとこの環境雑音が開放されている外耳道の入口部から気導音として入り、しばしば骨導音として内耳に伝達される音声信号が外耳道経由で内耳に伝達される環境騒音によりマスキングされることがあるため、例えば交通機関のプラットホーム等の騒音レベルの高い使用環境下では使用に適さないという問題がある。 For bone conduction headset according to Patent Document 1 described above, which listens to audio information by bone conduction sound while opening the ear canal, the ear canal this environment noise when there is ambient noise around is open enters the air conduction sound from the inlet portion, often because the audio signal to be transmitted to the inner ear as bone conduction sound is sometimes masked by the environmental noise which is transmitted to the inner ear via the ear canal, for example, the noise level of the platform or the like of transportation there is a problem that is not suitable for use in high use under environment.

そこで、このような骨伝導ヘッドセットの場合、騒音レベルの高い使用環境下での使用が困難であると、使用者が耳介の後側の乳様突起部等に骨伝導スピーカを当てて聴取するときに同時に指で外耳道の入口部を閉塞するように操作すれば、環境騒音によるマスキングの問題を対策できるが、このように使用環境下に応じて使用者による操作の手間を別途に要することは受話器の取り扱い上において煩雑を伴う不便なものとなっている。 Therefore, in such bone conduction headset against the it it is difficult to use under high usage environment noise level, a bone conduction speaker to the side of the mastoid unit and the like after the user pinna listening by operating as simultaneously to close the inlet portion of the ear canal with a finger when, can measure the masking problems caused by environmental noise, it takes time and effort for operation by the user depending on the use environment thus separately It has become inconvenient with troublesome in handling the handset. 又、一般に骨導音は気導音と比べて音質や語音明瞭度の点で劣るため、現状の骨伝導スピーカ(或いはそれを用いた受話器)が気伝導スピーカ(或いはそれを用いた受話器)よりも優れている点は少ないということもあり、骨導方式の基本機能を充分に活かし切れていないという問題もある。 Also, generally bone-conduction sound because inferior in sound quality and speech intelligibility compared to the air conduction sound, than the current of the bone conduction speaker (or receiver using the same) is air conduction speaker (or receiver using the same) the point also is better Sometimes it is less, there is also a problem that has not expired making full use basic functions of bone conduction system.

本発明は、このような問題点を解決すべくなされたもので、その技術的課題は、外部の騒音レベルが高い場合等の使用環境下に拘らず明瞭度の良い自然な音質で音声聴取できると共に、取り扱いが簡易な受話器を提供することにある。 The present invention has to have been made to solve this problem, the technical problems can be audio listening good natural sound quality clarity regardless of the use environment, such as when the external noise level is high along with the lies in the fact that handling is to provide a simple handset.

本発明によれば、音声情報を発声して内耳へ伝達するための1つの音発声部を備えた受話器において、音発声部は、外耳道,中耳を介して内耳へ音声情報を伝達するための気導経由による第1の音伝達経路と、耳介軟骨,側頭骨を介して内耳へ音声情報を伝達するための軟骨導経由による第2の音伝達経路との両方を利用する双経路伝達機能を持つ受話器が得られる。 According to the present invention, in a receiver having a single sound utterance section for transmitting by saying a voice information to the inner ear, the sound utterance section, the ear canal, for transmitting audio information via the middle ear to the inner ear a first sound pathway by way of air conduction, bi path transfer functions to use the both of the second sound transmission path by cartilage guide through for transmitting audio information to the inner ear through the ear cartilage, the temporal bones handset with is obtained.

又、本発明によれば、上記受話器において、双経路伝達機能は、音発声部の耳介軟骨に対して圧着する力を増減することにより内耳に伝達される音声情報の第1の音伝達経路と第2の音伝達経路とにおける音伝達レベルの比率を調整変更可能である受話器が得られる。 Further, according to the present invention, in the above receiver, the bi-path transfer function, the first sound transmission path of voice information is transmitted to the inner ear by increasing or decreasing the force of crimping the sound utterance section auricle cartilage When the second sound transmission path and the receiver sound is the ratio of the transmission level adjustment it can be changed in is obtained.

更に、本発明によれば、上記何れかの受話器において、音発声部は、圧電バイモルフと可撓性物質とを複合して成る振動体、圧電ユニモルフと可撓性物質とを複合して成る振動体、電磁型の振動体の何れか一つである受話器が得られる。 Further, according to the present invention having any of the foregoing receiver, sound utterance section is formed by combining vibrator formed by combining the piezoelectric bimorph and a flexible material, a piezoelectric unimorph and flexible material vibration body, handset obtain an any one of the vibrator of the electromagnetic type.

加えて、本発明によれば、上記受話器において、振動体を外耳道の入口部に近接させて耳介に接触させるための支持部を備えた受話器が得られる。 In addition, according to the present invention, in the handset, the handset having a support portion for contacting the auricle in close proximity to the inlet portion of the ear canal vibrator obtained.

一方、本発明によれば、上記何れか一つの受話器を備えて成る音声コミュニケーション機器、又は電話機、或いは聴覚補助装置が得られる。 On the other hand, according to the present invention, the one of the voice communication device comprising comprising a receiver, or telephone, or auditory prosthesis is obtained.

本発明の受話器の場合、外耳道の入口部に音発声部を成す振動体(スピーカ)を置くことにより音声情報を内耳へ気導経由により伝達する第1の音伝達経路と、耳介軟骨に振動体を圧着させることにより軟骨から骨を介して音声情報を内耳へ軟骨導経由により伝達する第2の音伝達経路との両方を利用する双経路伝達機能を持つことを基本とした上、双経路伝達機能において、音発声部の耳介軟骨に対して圧着する力を増減することにより内耳に伝達される音声情報の第1の音伝達経路と第2の音伝達経路とにおける音伝達レベルの比率を調整変更可能としているので、従来の受話器のように気導方式又は骨導方式の何れかの範疇に属するものでなく、これらの基本機能を適度に合わせ持つものとなることにより、外部の騒音レベルが高い場 For handset of the present invention, the first sound transmission path for transmitting by air conduction through the audio information to the inner ear by placing vibrating body forming a sound utterance section to the inlet portion of the ear canal (speaker), the vibration in the pinna cartilage on which is based on having a bi-path transfer function which uses both the second sound transmission path for transmitting by way of the cartilage guide voice information to the inner ear through the bone from cartilage by crimping the body, twin path in transfer function, the first sound transmission path and the ratio of the sound transmission level in a second sound transmission path of voice information is transmitted to the inner ear by increasing or decreasing the force of crimping the sound utterance section auricle cartilage since the adjustable change, not belonging to any category of air conduction method or the bone conduction system as in a conventional handset, by becoming as having moderately fit these basic functions, external noise level is high field 等の使用環境下に拘らず明瞭度の良い自然な音質で音声聴取できるようになると共に、取り扱いが簡易なものとなり、従来に無く骨導方式の基本機能についても充分に活かし切れるようになる。 Together we will be able to voice listening in a natural sound quality used good clarity regardless of the environment etc., handling is made simple, so that even cut - taking advantage enough for the basic functions of without bone conduction system in the prior art.

本発明の最良の形態に係る受話器は、音声情報を発声して内耳へ伝達するための1つの音発声部を備えた基本構成にあって、音発声部において、外耳道,中耳を介して内耳へ音声情報を伝達するための気導経由による第1の音伝達経路と、耳介軟骨,側頭骨を介して内耳へ音声情報を伝達するための軟骨導経由による第2の音伝達経路との両方を利用する双経路伝達機能を持たせたものである。 Receiver according to the preferred embodiment of the present invention, in the basic configuration with one sound utterance section for transmitting by saying a voice information to the inner ear, the sound utterance section, ear canal, through the middle ear inner ear to a first sound pathway by air conduction through for transmitting audio information, auricular cartilage, and second sound pathway by cartilage guide through for transmitting audio information to the inner ear through the temporal bone those which gave bi path transfer functions to use the both. 但し、この双経路伝達機能は、音発声部の耳介軟骨に対して圧着する力を増減することにより内耳に伝達される音声情報の第1の音伝達経路と第2の音伝達経路とにおける音伝達レベルの比率を調整変更可能であることが望ましい。 However, in this bi-path transfer function, the first sound transmission path of voice information is transmitted to the inner ear and the second sound transmission path by increasing or decreasing the force of crimping the sound utterance section auricle cartilage it is desirable the ratio of sound transmission level is adjustable changed. 又、音発声部には、圧電バイモルフと可撓性物質とを複合して成る振動体、圧電ユニモルフと可撓性物質とを複合して成る振動体、電磁型の振動体の何れか一つを用いることが可能であり、更に、こうした振動体を外耳道の入口部に近接させて耳介に接触させるための支持部を備えることが構造上において好ましい。 Further, in the sound utterance unit, the vibrating body formed by combining the piezoelectric bimorph and a flexible material, the vibration member comprising in combination a piezoelectric unimorph a flexible material, any one of electromagnetic vibrating body it is possible to use, further, it is preferable in the structure comprising a supporting portion for contacting in close proximity auricle such vibrator to the inlet portion of the ear canal.

即ち、本発明の受話器は、電磁型,圧電型等から成る電気音響変換器の振動体を音発声部として用いることを基本とし、1つの振動体から放射する空中音波と音響振動とをそれぞれ気導経由による第1の音伝達経路と軟骨導経由による第1の音伝達経路との両方を介して内耳に音声情報を伝達する双経路伝達機能を有するものであるが、ここでの振動体の寸法は耳介の幅又は長さと同程度にすることが可能であり、耳介に押し当てて使用するのに好都合である。 In other words, handset of the present invention, air electromagnetic, and basic the use of vibration of the electro-acoustic transducer comprising a piezoelectric such as sound utterance section, one airborne sound waves radiated from the vibrating body and the acoustic vibration and the respective Although through both the first sound pathway by way of the first sound transmission path and cartilage guide by way of conductive and has a bi-path transfer function for transmitting audio information to the inner ear, the vibrating body where dimensions are possible to the width or length and comparable auricle, it is convenient to use pressed against the pinna. 又、振動体を耳介に押し当てる力を増減することにより、気導経由と軟骨導経由とにおける音声情報の音伝達レベルの比率を調整できるため、外耳道内に入る外部からの騒音量を使用環境下に応じて適度に調整すれば良く、例えば外部の騒音量が大きい使用環境下では耳介に受話器を強く圧着するようにして軟骨導経由による音声情報の音伝達レベルを増加させると共に外部騒音が外耳道内に入ることを遮断し、逆に外部の騒音量が小さい静かな使用環境下では耳介に受話器を押し当てる力を弱めるようにして耳介軟骨に伝達される音声情報の音伝達レベルを減少させて最も生理的な気導経由による音声情報を主体とし、且つ外耳道の入口部を完全に閉鎖しないようにして自然な音感覚を得ることができる。 Also, by increasing or decreasing the force pressing the vibrating body in the auricle, it is possible to adjust the ratio of the sound transmission level of the audio information in the via air conduction through the cartilage guide, using noise amount from the outside entering the ear canal It may be appropriately adjusted according to the environment, for example, an external external noise with the noisy a large amount of use environment increases the sound transmission level of the sound information by way of cartilage guide so as to crimp strongly handset auricle sound transmission level but blocked from entering the ear canal, sound information under external quiet use environment amount noise is small conversely transmitted so as to weaken the force for pressing the handset auricular auricular cartilage mainly voice information in the most physiological air conduction through reduces, it is possible to obtain a natural sound feeling and not to completely close the inlet of the ear canal. 従って、係る受話器によれば、外部の騒音レベルの如何に拘らず簡易に明瞭度の良い自然な音質で音声聴取できる。 Therefore, according according to handset can voice heard on good natural sound quality clarity in irrespective simple external noise level.

図1は、本発明の受話器に用いられる矩形板状の振動子11による音声振動が内耳の知覚細胞に伝達される様子を示した模式図である。 Figure 1 is a schematic diagram sound vibration by a rectangular plate-like vibrator 11 used in the handset of the present invention showing a state that is transmitted to the perceptual cells of the inner ear. 又、図2は、この振動体11が耳介12に押し当てられた状態を耳の正面方向から示した模式図である。 Also, FIG. 2 is a schematic view showing a state in which the vibrator 11 is pressed against the pinna 12 from the front of the ear. 但し、振動体11の形状,大きさ,配置(位置)は図示された形態に限定されるものではない。 However, the shape of the vibrator 11, the size, placement (location) is not intended to be limited to the illustrated form.

以下は、これらの図1及び図2を参照して、振動体11が耳介12に適度に押し当てられた状態で音声振動が人体の耳において、どのように聴覚として知覚されるかを説明する。 Hereinafter, referring to these Figures 1 and 2, whether voice vibrations in a state in which the vibrating body 11 is devoted moderately press the pinna 12 in human ears are perceived how auditory description to. 但し、図1及び図2中において、電気的な結線類は省略してある。 However, in FIG. 1 and FIG. 2, the electrical connection class is omitted.

先ず、ここでの振動体11は、音声情報を乗せた電気信号を機械的な振動に変換する音発声部であり、それは圧電バイモルフと可撓性物質とを複合して成るか、圧電ユニモルフと可撓性物質とを複合して成るか、或いは電磁型電気音響変換器から成るものであり、何れについても電気音響変換機能を持つものである。 First, where the vibrating body 11 in a sound utterance section for converting the mechanical vibration of the electrical signals carrying the audio information, it is either formed by combining the piezoelectric bimorph and a flexible material, a piezoelectric unimorph or a flexible material formed by the composite, alternatively made of electromagnetic transducer, and has an electro-acoustic conversion function for any.

音声情報の気導経由による第1の音伝達経路では、振動体11で発生した音声振動が耳介12のほぼ中央にある外耳道21の空気を介して鼓膜22を振動させ、この振動が槌骨,砧骨,及び鐙骨から成る耳小骨23に伝達されると、前庭窓24を経て蝸牛25にある知覚細胞で微弱な電気信号に変換されから蝸牛神経(聴神経)26によって脳に送られ、脳内で音声として認識される。 In the first sound pathway by air conduction through the audio information, voice vibration generated by the vibrator 11 vibrates the tympanic membrane 22 through the air in the ear canal 21 located substantially at the center of the pinna 12, the vibration is malleus , Kinutakotsu, and when it is transmitted to the ossicles 23 consisting stapes, sent from converted through the oval window 24 to the weak electrical signals in sensory cells in the cochlea 25 to the brain by cochlear nerve (auditory nerve) 26, It is recognized as a voice in the brain.

音声情報の軟骨導経由による第2の音伝達経路では、振動体11からの音声振動が耳介12や耳珠の軟骨に伝導される。 In the second sound pathway by cartilage guide through the audio information, the audio vibrations from the vibrating body 11 is conducted to the cartilage of the auricle 12 and the tragus. これらの軟骨は側頭骨に繋がっているので、軟骨に伝導された音声振動は側頭骨に伝わってから内耳に達し、蝸牛25にある知覚細胞で電気信号に変換されてから蝸牛神経(聴神経)26によって脳に送られ、脳内で音声として認識される。 These cartilage is connected to the temporal bone, sound vibrations conducted to the cartilage reaching the inner ear from the transmitted to the temporal bone, the cochlea after being converted into an electric signal by the perceptual cells in the cochlea 25 nerve (auditory nerve) 26 sent to the brain by, it is recognized as a voice in the brain.

図3は、振動体11が使用される耳の軟骨導経由による第2の音伝達経路を説明するために外耳を断面にして示した模式図である。 Figure 3 is a schematic view showing in section the ear in order to explain the second sound pathway by cartilage guide via ear vibrator 11 is used.

この第2の伝達経路について、図3を参照して更に詳細に説明する。 This second transmission path will be described in more detail with reference to FIG. 先の図1に示した外耳道21には空気31が満たされ、外耳道21の外側周囲には耳介軟骨や耳珠軟骨から成る軟骨部32が存在し、その内側(奥側)は骨部(側頭骨)33と繋がっているが、軟骨導経由の音伝達経路では外耳道21の空気31を介さない。 The ear canal 21 as shown previously in Figure 1 is filled with air 31, the outer periphery of the ear canal 21 there is cartilage 32 consisting of auricular cartilage and tragus cartilage, the inside (inner side) bone ( and it is connected to the temporal bone) 33 but not through the air 31 of the ear canal 21 in the sound transmission path through the cartilage guide.

そこで、騒音レベルの大きい使用環境下において、振動体11を耳介12に強く押し当てると、軟骨導経由による第2の音伝達経路では、音声情報の音伝達レベルが増加すると共に、外耳道21の入口部付近は耳珠や耳介12の一部で覆われて外耳道の入口部が外部と遮断され、外部の騒音等が外耳道21内に侵入し難くなる。 Therefore, the greater use environment of noise level, when the vibrating body 11 strongly pressed against the pinna 12, the second sound transmission path by way of cartilage guide, with sound transmission level of the audio information is increased, the ear canal 21 near the inlet portion is blocked tragus and the inlet of the part covered with and external auditory canal of the auricle 12 is an external, such as an external noise is hardly penetrates into the external auditory canal 21. 従って、騒音レベルの大きい使用環境下においては振動体11を耳介12に強く押し当てるようにすることにより、外部の騒音の外耳道21内への侵入を抑制し、且つ軟骨伝導に伴う音声信号を増大させることができる。 Therefore, by in large use environment of noise level to make strongly pressed against the vibrating body 11 in the pinna 12, to suppress the penetration of outside noise in the ear canal 21, and an audio signal accompanying the cartilage conduction it can be increased. こうした両方の作用が相まって、信号対ノイズ比(S/N比)が大幅に改善して音声の明瞭度が向上するようになる。 Action of these both combined, the signal-to-noise ratio (S / N ratio) is so to improve the clarity of speech significantly improved.

これに対し、静かな使用環境下において、振動体11を軽く耳介に押し当てると、軟骨導経由による第2の音伝達経路では、軟骨に伝えられる音声情報の音伝達レベルが減少すると共に、生理的な音声伝達経路である気導経由による第1の音伝達経路における音声情報の音伝達レベルの方の比率が大きくなり、しかも振動体11の圧着力が弱いことにより外耳道21の入口部は完全に閉塞されることがないため、気導を主体とした耳閉感を伴わない自然な音聴取を行うことができる。 In contrast, in quiet use environment, when pressed lightly pinna the vibrator 11, the second sound transmission path by way of cartilage guide, with sound transmission level of the audio information conveyed in the cartilage is reduced, ratio towards sound transmission level of the audio information in the first sound pathway by air conduction through a physiological sound transmission path becomes large and the inlet portion of the ear canal 21 by a weak bonding force of the vibrator 11 since it will not be completely closed, it is possible to perform natural sound listening without ears 閉感 mainly composed of air conduction.

図4は、本発明の実施例1に係る受話器を備えた音声コミュニケーション機器を示した斜視図である。 Figure 4 is a perspective view of a voice communication device having a receiver according to a first embodiment of the present invention.

この音声コミュニケーション機器は、携帯電話機,PHS,固定電話機等の各種電話機の筐体43の外面に弾性部材44を介して矩形板状の振動体11が取り付けられて構成されている。 The voice communication device, mobile phone, PHS, vibrator 11 of the rectangular plate via the elastic member 44 to the outer surface of various phone housing 43 is constituted mounted such fixed telephone. 因みに、ここでの弾性部材44は、振動体11を外耳道21の入口部に近接させて耳介12に接触させるための支持部として機能する。 Incidentally, where the elastic member 44 in the function as a support for in close proximity to the vibrating body 11 in the inlet portion of the ear canal 21 into contact with the pinna 12.

この振動体11は、圧電バイモルフと可撓性物質とから成るもので、その寸法は長さ32mm×幅8mm×厚さ4mmとなっている。 The vibrating body 11 is made of a piezoelectric bimorph and flexible material, whose dimensions are a length 32 mm × width 8 mm × thickness 4 mm. 振動体11の細部構造は、金属弾性板から成るシムの両面に圧電セラミック板が接着された上、更にその両面に可撓性物質としてのポリウレタンが厚さ約2mmの被覆層として形成された圧電バイモルフの構造となっている。 Detailed structure of the vibrator 11, on which the piezoelectric ceramic plates are bonded to both sides of the shim made of a metal elastic plate, which is formed as a further coating layer of polyurethane having a thickness of about 2mm as the flexible material on both surfaces piezoelectric and it has a bimorph structure.

振動体11の基本動作は、一方の圧電セラミック板が長手方向に伸張するとき、他方の圧電セラミック板が長手方向に収縮するように電圧印加されることによりバイモルフ振動が発生するものである。 The basic operation of the vibrator 11 is one in which one piezoelectric ceramic plate when extending longitudinally, the bimorph vibration is generated by the other piezoelectric ceramic plate is energized to contract in the longitudinal direction. 又、ポリウレタンの被覆層の厚さにより共振周波数とQ値とが設定され、気導経由による第1の音伝達経路と軟骨導経由による第2の音伝達経路との両方における音響放射特性を満足するように設計されている。 Also, the resonant frequency and the Q value is set by the thickness of the coating layer of polyurethane, satisfying the acoustic radiation characteristics in both the second sound pathway by way of the first sound transmission path and cartilage electrically by via air conduction It is designed to. 但し、振動体11の基本構造として、その形状や寸法、或いはシムの材質,接着の方法等は例示したものに限定されない。 However, as the basic structure of the vibrator 11, the shape and size, or the material of the shim, and a method of bonding is not limited to those illustrated.

この音声コミュニケーション機器の場合、筐体43を使用者が手で支持して振動体11を耳介12に押し当てる力を加減し、外耳道21及び中耳を介して内耳に音声情報を伝達する気導経由による第1の音伝達経路と、耳介軟骨の軟骨部32及び骨部(側頭骨)33を介して内耳に音声情報を伝達する軟骨導経由による第2の音伝達経路とにおける音伝達レベルの比率を調整することにより、使用環境下に応じて外部からの騒音レベルに対処することができる。 For the audio communication equipment, feel the housing 43 user supported by hand vibrator 11 to increase or decrease the force pressing the pinna 12, transmits the voice information to the inner ear via the external auditory canal 21 and the middle ear a first sound pathway by way of electrical, sound transmission in the second sound pathway by cartilage guide through for transmitting audio information to the inner ear through the cartilage 32 and bone portion (the temporal bone) 33 of the auricle cartilage by adjusting the ratio of levels, it is possible to cope with the noise level from the outside in response to the use environment.

具体的に言えば、交通機関のプラットホームや交通量の多い道路際等の騒音レベルが高い場所では強く押し当てるようにすれば良く、こうした場合には音声振動が耳介軟骨の軟骨部32に大きく伝わり、しかも外耳道21は閉鎖されるため、外部からの騒音が妨げられてS/N比が向上し、音声情報の語音における明瞭度が上がるようになる。 Specifically, it is sufficient to strongly pressed against the noise level is high the location of the road Sai such busy platforms and traffic transport, in such a case the voice vibrations largely cartilage part 32 of the auricle cartilage transmitted, and since the ear canal 21 is closed, to improve the S / N ratio hampered noise from the outside, so that increases intelligibility in speech voice information.

これに対し、騒音レベルが比較的低い場所では押し当てる力を弱めるようにすれば良く、こうした場合には耳介軟骨の軟骨部32に伝わる音声振動が減少し、相対的に生理的な音伝達経路である気導経由による第1の音伝達経路からの音声情報が増加し、又外耳道21は完全に閉鎖されないために自然な音感覚が得られる。 In contrast, it is sufficient to weaken the force of pressing is at a relatively low place noise level, in such a case reduces the sound vibration transmitted to the cartilage part 32 of the auricle cartilage, relatively physiological sound transmission audio information from the first sound transmission path is increased by air conduction through the path, also the ear canal 21 natural sound feeling to not completely closed is obtained.

尚、図2に示したように振動体11を耳介12の上下方向に対して振動体11の長手方向がほぼ直交する状態を得ることが使用状態の基本となるが、振動体11の長手方向の方位を変えるように配置すると耳介12の形に起因して異なる聴感が得られるため、実際の使用時には適当な方位を選択することが望ましい。 Although it is possible to obtain a longitudinal direction generally orthogonal state of the vibrator 11 relative to the vertical direction of the pinna 12 vibrator 11 as shown in FIG. 2 the basic state of use, the longitudinal of the vibrator 11 since the auditory different due to the shape of the pinna 12 is obtained by placing to alter the orientation direction, it is desirable to select a suitable orientation at the time of actual use.

図5は、本発明の実施例2に係る受話器を示した斜視図である。 Figure 5 is a perspective view showing a receiver according to a second embodiment of the present invention. この受話器は、圧電バイモルフの振動体11の一対のものが支持枠55によって弾性的に支持された上、それぞれ切り替え型ばね機構56を介して後頭部用の頭部固定バンド57に両方の端部に固定されることにより電子機器用のヘッドフォンとして構成されている。 The handset is on one of the pair of piezoelectric bimorph vibrator 11 is elastically supported by the support frame 55, both end portions in the head fixing band 57 for occipital via a switching type spring mechanism 56 respectively It is configured as a headphone for electronic equipment by being secured. 因みに、ここでの支持枠55及び切り替え型ばね機構56は、協働して振動体11を外耳道21の入口部に近接させて耳介12に接触させるための支持部として機能する。 Incidentally, here the support frame 55 and the switching-type spring mechanism 56, the vibration member 11 is brought close to the inlet portion of the ear canal 21 cooperate to function as a support for contacting the pinna 12.

このヘッドフォンタイプの受話器を使用する場合、頭部固定バンド57の本体部分を後頭部に当接させながらその両端部を耳介12の上側に配置し、一対の振動体11をそれぞれ外耳道21の正面から耳介12に当接させれば良いものである。 When using the handset of the headphone type, a body portion of the head fixing band 57 to both ends thereof while in contact with the back of the head is arranged on the upper side of the pinna 12, the pair of the vibrator 11 from the front of the ear canal 21 respectively in which it is sufficient to contact the auricle 12. このとき、切り替え型ばね機構56により振動体11が耳介12を当接する力を調整し、実施例1で説明した場合と同様に、外耳道21及び中耳を介して内耳に音声情報を伝達する気導経由による第1の音伝達経路と、耳介軟骨の軟骨部32及び骨部(側頭骨)33を介して内耳に音声情報を伝達する軟骨導経由による第2の音伝達経路とにおける音伝達レベルの比率を調整することにより、使用環境下に応じて外部からの騒音レベルに対処することができる。 At this time, the vibrating body 11 by adjusting the abutting force of the pinna 12 by the switching-type spring mechanism 56, similarly to the case described in Example 1, to transmit the voice information to the inner ear via the external auditory canal 21 and the middle ear a first sound pathway by way of air conduction, the sound in the second sound pathway by cartilage guide through for transmitting audio information to the inner ear through the cartilage 32 and bone portion (the temporal bone) 33 of the auricle cartilage by adjusting the ratio of the transmission level, it is possible to cope with the noise level from the outside in response to the use environment.

従って、このヘッドフォンタイプの受話器においても、実施例1で説明した場合と同様に、騒音レベルが高い場所では強く押し当ることにより外部からの騒音が妨げられてS/N比が向上し、音声情報の語音における明瞭度が上がるようにし、騒音レベルが比較的低い場所では押し当てる力を弱めることにより第1の音伝達経路からの音声情報が増加して自然な音感覚が得られるようにすることができる。 Therefore, in the receiver of this headphone type, similarly to the case described in Example 1, and noise from the outside is prevented by pressed against strong in the noise level high places improved S / N ratio, the voice information as intelligibility is increased at speech of to ensure that natural sound feeling audio information is increased from the first sound transmission path by weakening the force of pressing is at a relatively low place noise level is obtained can.

尚、上述した実施例1に係る音声コミュニケーション機器や実施例2に係る受話器の場合、振動体11に圧電バイモルフを用いた場合を説明したが、圧電バイモルフに代えて圧電ユニモルフを使用することも可能である。 In the case of handset according to the voice communication device or the embodiment 2 according to the first embodiment described above, a case has been described using a piezoelectric bimorph vibrator 11, it can also be used a piezoelectric unimorph instead of the piezoelectric bimorph it is. 又、振動体11として、電磁型電気音響変換器を用いても、同様に使用環境下に応じて気導経由による第1の音伝達経路と軟骨導経由による第2の音伝達経路とにおける音伝達レベルの比率を調整して外部からの騒音レベルに適した設定を行うことができる。 Further, as the vibrating body 11, sound in a second sound pathway by way of the first sound transmission path and cartilage guide by way of air conduction depending also under similarly used environment using electromagnetic transducer it can be set appropriate to the noise level from the outside by adjusting the ratio of the transmission level. 更に、振動体11の形状を矩形として説明したが、振動体11については、耳介12の大きさに応じて気導経由による第1の音伝達経路と軟骨導経由による第2の音伝達経路とを十分に確保できると共に、外部からの騒音レベルに応じて耳介12に押し当てる力を加減することにより外耳道21の入口部を耳珠等で塞ぎ得る条件を満たせば、その種類,形状,大きさ,配置(位置)は上述した形態のものに限定されない。 Furthermore, while explaining the shape of the vibrating body 11 as a rectangle, the vibrator 11, the second sound pathway by way of the first sound transmission path and cartilage guide by way of air conduction in accordance with the size of the pinna 12 DOO with a can be sufficiently ensured, satisfies the conditions for obtaining block the inlet portion of the ear canal 21 at the tragus and the like by adjusting the force pressing the pinna 12 in accordance with the noise level from the outside, the type, shape, the size, placement (position) is not limited to the embodiment described above.

本発明の受話器の場合、上述した音声コミュニケーション機器としての電話機や電子機器用の受話器への適用が有効である他、補聴器等の聴覚障害者用の補助機器に代表される聴覚補助装置への適用も有効である。 For handset of the present invention, other applications of the handset for telephony and electronic equipment as voice communication devices described above are valid, the application of the auditory prosthesis typified by an auxiliary device for the deaf for hearing aids it is also effective.

本発明の受話器に用いられる矩形板状の振動子による音声振動が内耳の知覚細胞に伝達される様子を示した模式図である。 Voice vibration due rectangular plate of the vibrator used in the receiver of the present invention is a schematic view showing a state that is transmitted to the perceptual cells of the inner ear. 図1に示した振動体が耳介に押し当てられた状態を耳の正面方向から示した模式図である。 Vibrator shown in FIG. 1 is a schematic view showing a state of being pressed against the auricle from the front of the ear. 図1に示した振動体が使用される耳の軟骨導経由による音伝達経路を説明するために外耳を断面にして示した模式図である。 It is a schematic view showing in section the ear in order to explain the sound pathway by cartilage guide via ear vibrator shown in FIG. 1 is used. 本発明の実施例1に係る受話器を備えた音声コミュニケーション機器を示した斜視図である。 It is a perspective view illustrating a voice communication device having a receiver according to a first embodiment of the present invention. 本発明の実施例2に係る受話器を示した斜視図である。 Is a perspective view showing a receiver according to a second embodiment of the present invention.

符号の説明 DESCRIPTION OF SYMBOLS

11 振動体 12 耳介 21 外耳道 22 鼓膜 23 耳小骨 24 前庭窓 25 蝸牛 26 蝸牛神経(聴神経) 11 vibrator 12 auricle 21 ear canal 22 eardrum 23 ossicles 24 oval window 25 cochlear 26 cochlear (auditory nerve)
31 空気 32 軟骨部 33 骨部 43 筐体 44 弾性部材 55 支持枠 56 切り替え型ばね機構 57 後頭部固定バンド 31 air 32 Cartilage 33 bone 43 housing 44 elastic member 55 supporting frame 56 switched spring mechanism 57 occipital fixing band

Claims (7)

  1. 音声情報を発声して内耳へ伝達するための1つの音発声部を備えた受話器において、前記音発声部は、外耳道,中耳を介して前記内耳へ前記音声情報を伝達するための気導経由による第1の音伝達経路と、耳介軟骨,側頭骨を介して前記内耳へ前記音声情報を伝達するための軟骨導経由による第2の音伝達経路との両方を利用する双経路伝達機能を持つことを特徴とする受話器。 In receiver with one of the sound utterance section for transmitting by saying a voice information to the inner ear, the sound utterance unit, via air conduction to transmit the voice information ear canal, through the middle ear to the inner ear a first sound pathway by, auricular cartilage, the bi-path transfer function which uses both the second sound pathway by cartilage guide through for transmitting the voice information to the inner ear through the temporal bone handset, characterized in that it has.
  2. 請求項1記載の受話器において、前記双経路伝達機能は、前記音発声部の前記耳介軟骨に対して圧着する力を増減することにより前記内耳に伝達される前記音声情報の前記第1の音伝達経路と前記第2の音伝達経路とにおける音伝達レベルの比率を調整変更可能であることを特徴とする受話器。 In handset of claim 1, wherein the bi-path transfer function, the first sound of the voice information is transmitted to the inner ear by increasing or decreasing the force of crimping against the auricular cartilage of the sound utterance section receiver, wherein the transmission path and the second sound is the ratio of the sound transmission level in a transmission path adjusting changeable.
  3. 請求項1又は2記載の受話器において、前記音発声部は、圧電バイモルフと可撓性物質とを複合して成る振動体、圧電ユニモルフと可撓性物質とを複合して成る振動体、電磁型の振動体の何れか一つであることを特徴とする受話器。 In handset according to claim 1 or 2, wherein said sound utterance unit, the vibrating body formed by combining the piezoelectric bimorph and a flexible material, the vibrating body formed by combining a piezoelectric unimorph and the flexible material, electromagnetic receiver, characterized in that the a one of the vibrating body.
  4. 請求項3記載の受話器において、前記振動体を前記外耳道の入口部に近接させて耳介に接触させるための支持部を備えたこと特徴とする受話器。 In handset of claim 3, wherein, the receiver, characterized by comprising a support portion for contacting the vibrating body in close proximity auricle in the inlet portion of the ear canal.
  5. 請求項1〜4の何れか一つに記載の受話器を備えて成ることを特徴とする音声コミュニケーション機器。 Voice communication device, characterized in that it comprises an receiver according to any one of claims 1 to 4.
  6. 請求項1〜4の何れか一つに記載の受話器を備えて成ることを特徴とする電話機。 Telephone, characterized in that it comprises an receiver according to any one of claims 1 to 4.
  7. 請求項1〜4の何れか一つに記載の受話器を備えて成ることを特徴とする聴覚補助装置。 Auditory prosthesis characterized in that it comprises an receiver according to any one of claims 1 to 4.

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