JP2007251895A - Acoustic device incorporated in vehicle seat - Google Patents

Acoustic device incorporated in vehicle seat Download PDF

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JP2007251895A
JP2007251895A JP2006076371A JP2006076371A JP2007251895A JP 2007251895 A JP2007251895 A JP 2007251895A JP 2006076371 A JP2006076371 A JP 2006076371A JP 2006076371 A JP2006076371 A JP 2006076371A JP 2007251895 A JP2007251895 A JP 2007251895A
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sound
speaker
back cavity
vehicle
acoustic device
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Masayoshi Uehara
正吉 上原
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Faurecia Clarion Electronics Co Ltd
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Clarion Co Ltd
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  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an acoustic device incorporated in a vehicle seat for listening to a voice whose low-pitched sound zone is reinforced in a wide range inside a compartment in a relatively simple structure without sacrificing the space of the compartment. <P>SOLUTION: The acoustic device which outputs a voice in a vehicle is provided with: a speaker incorporated in the backrest part of a seat installed in the vehicle; a speaker installation means having a partition for respectively outputting the forward sound and backward sound of the speaker; and first and second back cavity parts having an internal space put through the backrest part of the seat for transmitting the forward sound and the backward sound, wherein the forward sound and backward sound to be output from the speaker are respectively output through the first and second back cavity parts. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は音響装置とりわけ車両のシートに内蔵される音響装置に関する。   The present invention relates to an acoustic device, particularly to an acoustic device built in a vehicle seat.

自動車類においては音響システムが搭載され、ドア部分など各所にスピーカを配置しているが、近年、音響環境の向上に対する要求が高まっており、先行技術1のように、バッフル面の背後にスピーカを取り付けたエンクロージャの背面に開口を設けたユニットを背もたれの背部に配設したスピーカが知られている。   In automobiles, acoustic systems are installed and speakers are placed in various places such as doors.In recent years, however, there has been an increasing demand for improvements in the acoustic environment. 2. Description of the Related Art A speaker is known in which a unit having an opening on the back of an attached enclosure is disposed on the back of a backrest.

しかし、先行技術は背もたれの外部にスピーカが配されるので外観的な面で芳しくなく、また、スピーカ使用時には車室スペースを減少させる点に問題があった。   However, the prior art is not good in terms of appearance because the speaker is arranged outside the backrest, and there is a problem in that the space of the passenger compartment is reduced when the speaker is used.

この対策も考慮して、背もたれ内部にスピーカや振動子を内蔵させたいわゆる背もたれ内蔵型のスピーカシステムが知られているが、従来のこの種のシステムでは、背もたれ内のクッション材により音量が減衰されやすく、しかも特に低音域を効果的に聴取させることが難しいという問題があった。
特開平８−３１０３１１号公報 In consideration of this measure, a so-called backrest built-in speaker system in which a speaker or vibrator is built in the backrest is known, but in this type of conventional system, the volume is attenuated by the cushion material in the backrest. There was a problem that it was easy and it was difficult to hear the low frequency range effectively.
JP-A-8-310311

本発明は前記のような問題点を解消するためになされたもので、その目的とするところは、車室のスペースを犠牲にせずに、比較的簡易な構造により低音域増強した音声を車室ないの広い範囲で聴取することが可能な車両シート内蔵型音響装置を提供することにある。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a sound that has a low-frequency range enhanced by a relatively simple structure without sacrificing the space of the vehicle compartment. It is an object of the present invention to provide a vehicle seat built-in acoustic device that can be heard in a wide range.

上記目的を達成するため本発明は、車両内で音声を出力する音響装置において、車両内に設置されたシートの背もたれ部に内蔵されたスピーカと、該スピーカの前方音と後方音を別々に出力するための仕切りを有するスピーカ設置手段と、前記前方音と前記後方音を伝えるためにシートの背もたれ部に貫通された内部空間を有する第１と第２のバックキャビティ部とを備え、前記スピーカから出力される前記前方音と前記後方音をそれぞれ前記第１、第２のバックキャビティ部を介して出力する構成としたものである。   In order to achieve the above object, the present invention provides an acoustic device that outputs sound in a vehicle, and separately outputs a speaker built in a backrest portion of a seat installed in the vehicle and a front sound and a rear sound of the speaker. Speaker installation means having a partition for carrying out, and first and second back cavity portions having an internal space penetrating through a seat back portion for transmitting the front sound and the rear sound from the speaker. The forward sound and the backward sound that are output are output via the first and second back cavity portions, respectively.

本発明によれば、シート背もたれ内部に設置されるため外観を損なわないと共に車室内のスペースを減じない。しかも、スピーカから放出される前方音と後方音を区別し、前方音を第１のバックキャビティ部を介して、後方音を第２のバックキャビティ部を介してそれぞれ出力するので、例えば前方音は聴取者の耳近く、後方音は車両内に低音域広げる様に音声出力することが可能となり、これにより、より低域音を増強し音声をしかも広い範囲で聴取することができる。また、低音域の出力を上げなくても十分な低音感を創成できるので、スピーカの大きさや消費電力の面でもメリットを期待できる。   According to the present invention, since it is installed inside the seat back, the appearance is not impaired and the space in the vehicle compartment is not reduced. In addition, the front sound and the rear sound emitted from the speaker are distinguished, and the front sound is output via the first back cavity part and the rear sound is output via the second back cavity part. Near the listener's ear, the rear sound can be output as a low-frequency sound in the vehicle so that the low-frequency sound can be enhanced and the sound can be heard over a wide range. In addition, since it is possible to create a sufficient low-frequency feeling without increasing the output of the low-frequency range, it is possible to expect advantages in terms of the size of the speaker and power consumption.

好適には、前記第１のバックキャビティ部と第２のバックキャビティ部が、前記前方音と前記後方音を前記背もたれ部の上下方向にそれぞれ出力するように指向されている。
これによれば、前方音を聴取者の耳近くで直接的に低音を出力できるので、臨場感を向上することができ、後方音は床を通じて体感的に聴取させることができる。 Preferably, the first back cavity portion and the second back cavity portion are directed to output the front sound and the rear sound in the vertical direction of the backrest portion, respectively.
According to this, since the front sound can be output directly near the listener's ear, the sense of reality can be improved, and the rear sound can be heard through the floor.

前記第１と第２のバックキャビティ部はいずれかが複数である場合を含む。
これによれば、第１のバックキャビティ部を複数とすることにより前方音を聴取者の両耳近くで出力できるので、臨場感にあふれた低音を感得することが可能になり、第２の第２のバックキャビティ部を複数とすることにより両足付近から車両内に低音域を広げることが可能になる。
また、前記前方音と前記後方音は、互いに位相が反転し、１８０度回転で出力される。
スピーカの接続を正相とすれば、前方音には＋の音が、後方音には−の音が出力されるので、打ち消されることなく前方音と後方音をそれぞれ効果的に出力することができる。 The case where one of the first and second back cavity portions is plural is included.
According to this, since the front sound can be output near the listener's both ears by using a plurality of the first back cavity portions, it is possible to obtain a realistic bass sound, and the second second cavity By providing a plurality of back cavity portions 2, it is possible to widen the bass range in the vehicle from the vicinity of both feet.
Further, the front sound and the rear sound are inverted in phase with each other and output with a rotation of 180 degrees.
If the speakers are connected in phase, a positive sound is output as the front sound and a negative sound is output as the rear sound. Therefore, the front sound and the rear sound can be output effectively without being canceled. it can.

以下添付図面を参照して本発明の実施例を説明する。
図１は本発明にかかる車両シート内蔵型音響装置の第１実施例を示している。１は車両内のシートであり、座席部１ａと、背もたれ部１ｂとヘッドレスト１ｃを備えている。２は前記背もたれ部１ｂに内蔵された本発明にかかる音響装置である。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 shows a first embodiment of an acoustic device with a built-in vehicle seat according to the present invention. Reference numeral 1 denotes a seat in the vehicle, which includes a seat portion 1a, a backrest portion 1b, and a headrest 1c. Reference numeral 2 denotes an acoustic device according to the present invention built in the backrest 1b.

前記音響装置２は、図２に単体の状態で示されており、３はスピーカ（スピーカーユニット）であり、ダブルボイスコイルスピーカなど所望のタイプのものが用いられる。
４は前記スピーカ設置手段としてのボックスであり、共鳴しない剛性のある材料、たとえば合板で代表される木材、あるいはＡＢＳ、ＰＰなどで代表される合成樹脂で構成されている。 The acoustic device 2 is shown in a single state in FIG. 2, and 3 is a speaker (speaker unit), and a desired type such as a double voice coil speaker is used.
Reference numeral 4 denotes a box as the speaker installation means, which is made of a rigid material that does not resonate, for example, wood represented by plywood, or synthetic resin represented by ABS, PP, or the like.

５は前記ボックス４内に壁として介在された仕切りであり、共鳴しない剛性のある材料からなり、周縁がボックス内壁にシール材などを介して固定され、この仕切り５によりボックス４内は前側と後側の２つの放音室４０,４１が画成されている。仕切り５は前記スピーカ３の取り付け手段として機能し、スピーカ３の前部が仕切り５に設けた開口に臨むように固定されている。
前記スピーカ３は出力される音が前方と後方で互いに位相が反転し、１８０度回転で出力されように接続されるもので、たとえば、スピーカ３の接続を正相とすれば、前側の音室４０にはスピーカ３の前部から＋の音が、後側の放音室４１にはスピーカ３の後部から−の音が出力される。 Reference numeral 5 denotes a partition interposed as a wall in the box 4, which is made of a rigid material that does not resonate, and its peripheral edge is fixed to the inner wall of the box via a sealant or the like. Two sound emitting chambers 40, 41 on the side are defined. The partition 5 functions as means for attaching the speaker 3 and is fixed so that the front portion of the speaker 3 faces the opening provided in the partition 5.
The speaker 3 is connected so that the phase of the output sound is reversed between the front and the rear and output by rotating 180 degrees. For example, if the connection of the speaker 3 is a positive phase, the sound chamber on the front side A positive sound is output from the front part of the speaker 3 to 40, and a negative sound is output from the rear part of the speaker 3 to the rear sound emission chamber 41.

６は第１のバックキャビティ部であり、筒状をなし、前記ボックス４の前側放音室４０に連通すように基端部が固定されている。７は第２のバックキャビティ部であり、筒状をなし、前記ボックス４の後側放音室４１に連通すように基端部が固定されている。
前記第１のバックキャビティ部６は、この例では上方に伸びており、第２のバックキャビティ部７は下方に伸びている。 Reference numeral 6 denotes a first back cavity portion, which has a cylindrical shape, and a base end portion is fixed so as to communicate with the front sound emitting chamber 40 of the box 4. Reference numeral 7 denotes a second back cavity portion, which has a cylindrical shape, and a base end portion is fixed so as to communicate with the rear sound emission chamber 41 of the box 4.
In this example, the first back cavity portion 6 extends upward, and the second back cavity portion 7 extends downward.

前記音響装置２は、図１のように、運転者へボックス４の前側音室４０が対峙するように背もたれ部１ｂ内に配され、クッション材１０によってあるいは他の任意の固定手段により位置固定される。
そして、第１のバックキャビティ部６は先端が背もたれ部１ｂの上方に延在され、ヘッドレスト１ｃの近傍位置に開口される。この例では先端が背もたれ部１ｂの上端から突出しているが、ほぼ面一で終わっていてもよい。
第２のバックキャビティ部７は先端が背もたれ部１ｂの下方に延在され、先端がこの例では背もたれ部１ｂの下端から突出しているが、ほぼ面一で終わっていてもよい。 As shown in FIG. 1, the acoustic device 2 is disposed in the backrest portion 1 b so that the front sound chamber 40 of the box 4 faces the driver, and is fixed by the cushion material 10 or by any other fixing means. The
The tip of the first back cavity portion 6 extends above the backrest portion 1b and is opened near the headrest 1c. In this example, the tip protrudes from the upper end of the backrest portion 1b, but it may end substantially flush.
The tip of the second back cavity portion 7 extends below the backrest portion 1b, and the tip protrudes from the lower end of the backrest portion 1b in this example, but it may be substantially flush.

本発明は上記構成であるため、スピーカ３を駆動すれば、前部の音響出力が仕切り５で画成された前側の放音室４０に前方音として放射され、第１のバックキャビティ部６を通って運転者の耳近くで直接聴取される。また同時に位相が反対の音響出力が仕切り５で画成された後側の放音室４１に後方音として放射され、第２のバックキャビティ部７を通って床近くに出力される。
これらにより、積極的かつ効果的に低音域を増強して聴取できると共に、低音域を第２のバックキャビティ部７から車室内に効果的に広げて聴取させることができる。
なお、車両の形状、音の方向などによっては、スピーカ３の位相を切り替えて第１のバックキャビティ部６と第２のバックキャビティ部７からの低音域の出方を変え、それのより車両や目的に応じて音を変えることもできる。 Since the present invention has the above-described configuration, when the speaker 3 is driven, the front acoustic output is radiated as a front sound to the front sound emitting chamber 40 defined by the partition 5, and the first back cavity portion 6 is It is heard directly through the driver's ear. At the same time, an acoustic output having the opposite phase is radiated as a rear sound to the rear sound emission chamber 41 defined by the partition 5 and is output near the floor through the second back cavity portion 7.
Accordingly, it is possible to actively and effectively enhance the bass range and listen to it, and to effectively spread the bass range from the second back cavity portion 7 to the vehicle interior.
Depending on the shape of the vehicle, the direction of sound, and the like, the phase of the speaker 3 is switched to change the way in which the low frequency range is emitted from the first back cavity portion 6 and the second back cavity portion 7. The sound can be changed according to the purpose.

図１は第１のバックキャビティ部６と第２のバックキャビティ部７をそれぞれ１本づつ設けた例を示している。
図３は本発明の他の実施例を示しており、（ａ）は第１のバックキャビティ部６を複数本間隔をあけて設け、第２のバックキャビティ部７を複数本間隔をあけて設けている。（ｂ）は第１のバックキャビティ部６を複数本間隔をあけて設け、第２のバックキャビティ部７を単数としている。（ｃ）は第１のバックキャビティ部６を後側の放音室４１のほぼ中央部から１本とし、第２のバックキャビティ部７を複数本間隔をあけて設けている。
（a）（ｂ）は両耳付近に直接低音域を聞かせることができ、（ａ）（ｃ）は両足元付近に低音を出力することができると共に、低音域の室内への広がりの範囲を拡大することができる。 FIG. 1 shows an example in which one first back cavity portion 6 and one second back cavity portion 7 are provided.
FIG. 3 shows another embodiment of the present invention. In FIG. 3, (a) provides a plurality of first back cavity portions 6 at intervals, and a plurality of second back cavity portions 7 at intervals. ing. In (b), a plurality of first back cavity portions 6 are provided at intervals, and a single second back cavity portion 7 is provided. In (c), one first back cavity portion 6 is provided from the substantially central portion of the rear sound emitting chamber 41, and a plurality of second back cavity portions 7 are provided at intervals.
(A) and (b) can directly hear a low frequency range near both ears, and (a) and (c) can output a low frequency range near both feet, and the range of the low frequency range extending into the room. Can be enlarged.

なお、本発明において、前側の放音室４０と後側の放音室４１は同じ容積である場合に限定されない。仕切り５の位置を調整することにより自由に比を変えることができる。
また、第１のバックキャビティ部６と第２のバックキャビティ部７は必ずしもボックスの上面と下面から伸びる場合に限定されない。太さや長さも同等である場合に限られない。また、形状も必ずしも直線状でなく、曲率をもって延在してもよいし、方向的にも鉛直状に延在している場合に限られない。 In the present invention, the front sound emitting chamber 40 and the rear sound emitting chamber 41 are not limited to the same volume. The ratio can be freely changed by adjusting the position of the partition 5.
Further, the first back cavity portion 6 and the second back cavity portion 7 are not necessarily limited to extending from the upper surface and the lower surface of the box. It is not limited to the case where the thickness and length are the same. Further, the shape is not necessarily linear, and the shape may extend with a curvature, and the shape is not limited to the case where the shape extends vertically.

本発明にかかる車両シート内蔵型音響装置の一例を示す縦断側面図である。It is a vertical side view showing an example of a vehicle seat built-in acoustic device according to the present invention. 本発明の単体の状態を示す部分切欠斜視図である。It is a partial notch perspective view which shows the single-piece | unit state of this invention. （ａ）（ｂ）（ｃ）は本発明の他の実施例を示す斜視図である。(A) (b) (c) is a perspective view which shows the other Example of this invention.

符号の説明Explanation of symbols

１ シート
１ｂ 背もたれ部
３ スピーカ
４ スピーカ設置手段（ボックス）
５ 仕切り
６ 第１のバックキャビティ部
７ 第2のバックキャビティ部
４０ 前側の放音室
４１ 後側の放音室 1 Seat 1b Backrest 3 Speaker 4 Speaker Installation Means (Box)
5 Partition 6 First Back Cavity 7 Second Back Cavity 40 Front Sound Release Room 41 Rear Sound Release Room

Claims (4)

車両内で音声を出力する音響装置において、車両内に設置されたシートの背もたれ部に内蔵されたスピーカと、該スピーカの前方音と後方音を別々に出力するための仕切りを有するスピーカ設置手段と、前記前方音と前記後方音を伝えるためにシートの背もたれ部に貫通された内部空間を有する第１と第２のバックキャビティ部とを備え、前記スピーカから出力される前記前方音と前記後方音をそれぞれ前記第１、第２のバックキャビティ部を介して出力することを特徴とする車両シート内蔵型音響装置。   In an acoustic device for outputting sound in a vehicle, a speaker built in a backrest portion of a seat installed in the vehicle, and speaker installation means having a partition for separately outputting the front sound and the rear sound of the speaker; A first and second back cavity portions having internal spaces penetrating through a seat back portion for transmitting the front sound and the rear sound, and the front sound and the rear sound output from the speaker. Are output via the first and second back cavity portions, respectively. 前記第１と第２のバックキャビティ部はいずれかが複数である場合を含むことを特徴とする請求項１に記載の車両シート内蔵型音響装置。   2. The vehicle seat built-in acoustic device according to claim 1, including a case where one of the first and second back cavity portions is plural. 前記第１のバックキャビティ部と第２のバックキャビティ部が、前記前方音と前記後方音を前記背もたれ部の上下方向にそれぞれ出力することを特徴とする請求項１または請求項２に記載の車両シート内蔵型音響装置。   3. The vehicle according to claim 1, wherein the first back cavity portion and the second back cavity portion output the front sound and the rear sound in the vertical direction of the backrest portion, respectively. Seat built-in acoustic device. 前記前方音と前記後方音は、互いに位相が反転して出力されることを特徴とする請求項１ないし請求項３のいずれかに記載の車両シート内蔵型音響装置。   The vehicle seat built-in type acoustic device according to any one of claims 1 to 3, wherein the front sound and the rear sound are output with phases reversed.
JP2006076371A 2006-03-20 2006-03-20 Acoustic device incorporated in vehicle seat Pending JP2007251895A (en)

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Cited By (10)

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JP2007082220A (en) * 2005-09-12 2007-03-29 Bose Corp Electroacoustic transduction for seat
JP2009267459A (en) * 2008-04-22 2009-11-12 Clarion Co Ltd Speaker fitting structure and speaker device
JP2009274687A (en) * 2008-05-19 2009-11-26 Tachi S Co Ltd Sound seat structure
CN102934463A (en) * 2009-10-23 2013-02-13 蓝图声学股份有限公司 Loudspeaker assembly and system
US8724827B2 (en) 2007-05-04 2014-05-13 Bose Corporation System and method for directionally radiating sound
US9049534B2 (en) 2007-05-04 2015-06-02 Bose Corporation Directionally radiating sound in a vehicle
KR101778549B1 (en) * 2016-06-21 2017-09-15 현대자동차주식회사 Speaker device for vehicle, and vehicle having the same
CN109660912A (en) * 2018-12-30 2019-04-19 瑞声科技（南京）有限公司 Vehicle-mounted sound box and automobile
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CN102934463A (en) * 2009-10-23 2013-02-13 蓝图声学股份有限公司 Loudspeaker assembly and system
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CN109660912A (en) * 2018-12-30 2019-04-19 瑞声科技（南京）有限公司 Vehicle-mounted sound box and automobile
CN109862465A (en) * 2018-12-30 2019-06-07 瑞声科技（南京）有限公司 Vehicle-mounted sound box and automobile
CN109660912B (en) * 2018-12-30 2020-01-21 瑞声科技（南京）有限公司 Vehicle-mounted sound box and automobile
EP4046392A4 (en) * 2019-10-18 2024-03-06 Bass On, Llc Sound system

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