JP2022549232A - 音響出力装置 - Google Patents
音響出力装置 Download PDFInfo
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- Acoustics & Sound (AREA)
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- Ophthalmology & Optometry (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Headphones And Earphones (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Circuit For Audible Band Transducer (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
本願は、2019年9月19日に出願された出願番号201910888762.2の優先権、及び2019年9月19日に出願された出願番号201910888067.6の優先権を主張し、その全ての内容が参照により本明細書に組み込まれるものとする。
Claims (22)
- 音響出力装置であって、
振動板及び磁気回路構造体を含む音響ドライバであって、前記振動板の前記磁気回路構造体に背向する側が前記音響ドライバの正面となり、前記磁気回路構造体の前記振動板に背向する側が前記音響ドライバの裏面となり、前記振動板の振動により前記音響ドライバがそれぞれその正面と裏面から外部に音を放射する、音響ドライバと、
前記音響ドライバを載置するように構成された筐体構造体と、を含み、
前記音響ドライバの正面及び裏面のうちの一面と前記筐体構造体とがキャビティを形成し、前記音響ドライバの前記キャビティを形成する一面から前記キャビティに音を放射し、前記音響ドライバの他面から前記音響出力装置の外部に音を放射する、音響出力装置。 - 前記筐体構造体が少なくとも1つの音誘導孔を含み、前記少なくとも1つの音誘導孔が、前記キャビティと音響的に結合され、前記音響ドライバが前記キャビティに放射した音を前記音響出力装置の外部に誘導する、請求項1に記載の音響出力装置。
- 前記少なくとも1つの音誘導孔が、前記筐体構造体の前記音響ドライバに向かう側の中心位置に近接している、請求項2に記載の音響出力装置。
- 前記少なくとも1つの音誘導孔の断面積が0.25mm2以上である、請求項2に記載の音響出力装置。
- 前記少なくとも1つの音誘導孔に音響減衰構造体が設けられている、請求項2に記載の音響出力装置。
- 前記磁気回路構造体は、前記振動板に対向して設けられた磁気伝導板を含み、前記磁気伝導板に、前記振動板の振動により発生する音を前記音響ドライバの裏面から誘導する少なくとも1つの音誘導孔が含まれている、請求項1に記載の音響出力装置。
- 前記音響ドライバの正面と前記筐体構造体とが前記キャビティを形成し、前記少なくとも1つの音誘導孔が、前記振動板の振動により発生する音を前記音響ドライバの裏面から前記音響出力装置の外部に誘導する、請求項6に記載の音響出力装置。
- 前記少なくとも1つの音誘導孔に、前記振動板から離れる方向に沿って音導管が設けられ、前記音導管が、前記少なくとも1つの音誘導孔から放射された音を前記音響出力装置の外部に誘導する、請求項6に記載の音響出力装置。
- 前記少なくとも1つの音誘導孔が、内から順に設けられた第1の孔部及び第2の孔部を含み、前記第1の孔部と前記第2の孔部とが貫通し、前記第2の孔部の直径が前記第1の孔部の直径より大きい、請求項6に記載の音響出力装置。
- 前記キャビティの前記振動板の振動方向に沿った高さが3mm以下である、請求項1に記載の音響出力装置。
- 前記振動板の形状が平面又はほぼ平面である、請求項1に記載の音響出力装置。
- 前記振動板が、前記キャビティから離れる方向に凹むエッジにより前記音響ドライバに固定されている、請求項10に記載の音響出力装置。
- 前記音響ドライバの裏面と前記筐体構造体とが前記キャビティを形成し、前記音響ドライバの正面に、前記振動板に対して設けられた保護構造体が更に設けられている、請求項1に記載の音響出力装置。
- 前記保護構造体が、前記振動板を外界から分離し、かつ振動板から発した音を外部に伝播できるように構成されている、請求項13に記載の音響出力装置。
- 前記保護構造体がフィルター構造体を含む、請求項13に記載の音響出力装置。
- 前記保護構造体が、少なくとも1つの音誘導孔を有するプレート構造体を含む、請求項13に記載の音響出力装置。
- 前記キャビティが第1の音誘導孔により音を前記音響出力装置の外部に誘導し、前記音響ドライバの前記キャビティを形成した面とは別の面では第2の音誘導孔により音を前記音響出力装置の外部に誘導し、前記第1の音誘導孔と第2の音誘導孔が異なる音響インピーダンスを有する、請求項1に記載の音響出力装置。
- 前記音響ドライバの正面又は裏面のうち、高周波応答の振幅値がより大きい一面は、耳までの音響経路が他面よりも近い、請求項1に記載の音響出力装置。
- 前記音響ドライバの正面又は裏面のうち、高周波数応答の振幅値がより大きい一面は、耳道に向かう、請求項1に記載の音響出力装置。
- 振動板及び磁気回路構造体を含む音響ドライバであって、前記振動板の前記磁気回路構造体に背向する側が前記音響ドライバの正面となり、前記磁気回路構造体の前記振動板に背向する側が前記音響ドライバの裏面となり、前記振動板の振動により前記音響ドライバがそれぞれその正面と裏面から外部に音を直接的に放射する、音響ドライバを含む音響出力装置。
- 前記磁気回路構造体が、前記振動板に対向して設けられた磁気伝導板を含み、前記磁気伝導板に、前記振動板の振動により発生する音を前記音響ドライバの裏面から誘導する少なくとも1つの音誘導孔が含まれている、請求項20に記載の音響出力装置。
- 前記音響ドライバの正面に、前記振動板に対して設けられた保護構造体が更に設けられ、前記保護構造体が前記磁気回路構造体に接続されている、請求項20に記載の音響出力装置。
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