JPS63125095A - On-vehicle speaker - Google Patents

On-vehicle speaker

Info

Publication number
JPS63125095A
JPS63125095A JP27252286A JP27252286A JPS63125095A JP S63125095 A JPS63125095 A JP S63125095A JP 27252286 A JP27252286 A JP 27252286A JP 27252286 A JP27252286 A JP 27252286A JP S63125095 A JPS63125095 A JP S63125095A
Authority
JP
Japan
Prior art keywords
vehicle
acoustic
sound
driver unit
tube
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
JP27252286A
Other languages
Japanese (ja)
Inventor
Shuichi Obata
小幡　修一
Masako Ogawa
小川　理子
Shuji Saeki
周二 佐伯
Yasutoshi Nakama
保利 中間
Katsumasa Sato
克昌 佐藤
Yoichi Kimura
陽一 木村
Kenichi Terai
賢一 寺井
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP27252286A priority Critical patent/JPS63125095A/en
Publication of JPS63125095A publication Critical patent/JPS63125095A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Stereophonic Arrangements (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To completely reproduce a low pitched sound zone by constituting two parallel acoustic tubes of different length in the construction body of a car, providing a driver unit in the inlet of the acoustic tube and disposing the aperture of the acoustic tube in a rear parcel. CONSTITUTION:The musical signals of right and left channels are inputted to the driver units 17, 18 attached to front doors 9, 10. On the rear surface of the driver units 17, 18, the acoustic tubes 19, 20 of the different length previously integrally formed on the side surface of frames 15, 16 and a back seat 6 from the front doors 9, 10 are disposed, the apertures 21, 22 are disposed in the rear parcel 5, and the sound on the units 17, 18 is propagated in the acoustic tubes 19, 20 and radiated in the room of the car. When the length of the acoustic tubes 19, 20 is 1/2 as long as the wavelength of a low threshold frequency, the acoustic tubes 19, 20 resonates with this frequency. The length of the acoustic tubes 19, 20 is set so as to compensate the mutual peak dip of a sound pressure frequency characteristic according to both resonance conditions.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は車室内に設ける車載用スピーカに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a vehicle-mounted speaker installed in a vehicle interior.

従来の技術 近年、車載用のコンパクトディスクプレーヤや大出力の
パワーアンプが商品化され、車室内の音楽信号の質が大
幅に向上し、これを再生する車載用スピーカの性能向上
に対する要望は非常に強いものがある。この様な状況下
で車室内の音響再生における大きな課題は、低音域の再
生であり従来の低音拡大の技術として、ドア部に専用の
バスレフ型キャビネットを配置した車載用スピーカがあ
る。Conventional technology In recent years, in-vehicle compact disc players and high-output power amplifiers have been commercialized, and the quality of music signals in the car interior has improved significantly, and there is a strong demand for improved performance of the in-vehicle speakers that play these signals. There is something strong. Under these circumstances, a major issue in reproducing sound inside a vehicle is the reproduction of bass frequencies, and conventional technology for expanding bass frequencies includes vehicle-mounted speakers that have a dedicated bass reflex type cabinet placed in the door.

以下、図面を参照しながら、上述した従来の車載用スピ
ーカについて説明を行う。Hereinafter, the above-mentioned conventional vehicle-mounted speaker will be explained with reference to the drawings.

第７図は従来の車載用スピーカの取り付は状態を示すも
のである。第７図において、１は車のドア、２はドア１
に取り付けたバスレフ型のスピーカキャビネット、３は
キャビネット２に取り付けられたスピーカユニット、４
はキャビネット２に設けられたバスレフポートでその開
口はスピーカユニット３と同−取り付は面にある。FIG. 7 shows how a conventional vehicle-mounted speaker is installed. In Figure 7, 1 is the car door, 2 is the door 1
3 is a bass reflex type speaker cabinet attached to cabinet 2, 4 is a speaker unit attached to cabinet 2,
is a bass reflex port provided in the cabinet 2, and its opening is the same as that of the speaker unit 3.It is mounted on the same surface.

以上のように構成された、車載用スピーカについて、以
下その動作について説明する。The operation of the vehicle-mounted speaker configured as described above will be described below.

アンプにより増幅された音楽信号はキャビネット２に取
り付けられたスピーカユニット３に入力される。キャビ
ネット２は、バスレフ型であり、そのバスレフポート４
の開口はスピーカユニット３の取り付は面と同一であっ
て、低音域はバスレフポート４の音響共振によって拡大
される。The music signal amplified by the amplifier is input to a speaker unit 3 attached to a cabinet 2. Cabinet 2 is a bass reflex type, and its bass reflex port 4
The opening is the same as the surface on which the speaker unit 3 is attached, and the bass range is expanded by the acoustic resonance of the bass reflex port 4.

発明が解決しようとする問題点 しかしながら、上記のような構成ではキャビネットとし
て取り得る容積は限定され、バスレフポート４の共振周
波数は高くなり、低音域の再生は満足できるものではな
かった。Problems to be Solved by the Invention However, with the above configuration, the volume that can be taken up as a cabinet is limited, the resonance frequency of the bass reflex port 4 becomes high, and the reproduction of bass frequencies is not satisfactory.

本発明は上記問題点に鑑み、最近の音楽信号の大幅な質
の向上に対応した低音域の十分な再生が可能な車載用ス
ピーカを提供するものである。SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides an in-vehicle speaker capable of sufficiently reproducing bass frequencies in response to the recent significant improvement in the quality of music signals.

問題点を解決するための手段 この目的を達成するために本発明の車載用スピーカは、
車体を構成する車の構造体で異なる長さの並列な二つの
音響管を構成し、音響管の入口にドライバユニットを備
えるとともにリアパーセルに音響管の開口が配置された
構成となっている。Means for Solving the Problems To achieve this objective, the in-vehicle speaker of the present invention has the following features:
Two sound tubes of different lengths are arranged in parallel in the car structure that makes up the vehicle body, and a driver unit is provided at the entrance of the sound tube, and an opening of the sound tube is arranged in the rear parcel.

作用 本発明はこの構成によって、予め車体の一部が異なる長
さの二つの並列な音響管が形成され、音響的に必要な長
さと断面積が確保され、その入口にドライバユニットを
設け、開口をリアパーセルに配置しているので、低音域
において音響管の共振による大幅な音響出力の増大が可
能である。Effect of the present invention With this configuration, two parallel acoustic tubes of different lengths are formed in advance in a part of the car body, the acoustically necessary length and cross-sectional area are secured, and a driver unit is provided at the entrance of the acoustic tube, and the opening Since it is placed in the rear parcel, it is possible to significantly increase the acoustic output in the low frequency range due to the resonance of the sound tube.

実施例 以下本発明の一実施例について、図面を参照しながら説
明する。EXAMPLE An example of the present invention will be described below with reference to the drawings.

第１図は本発明の一実施例における車載用スピーカの構
造を示すものである。第１図において、６はリアパーセ
ル、６は後部シート、７．８は後部ドア、９，１Ｑは前
部ドア、１１．１２は前部／−ト、１３．１４はカール
サイド、１６．１６はフレーム、１７，１８Ｕドライバ
ユニツト、１９．２０は前部ドア９，１０がらフレーム
１６゜１６の側面、後部シート６に予め一体成形により
構成した長さの互いに異なる音響管、２１．２２はリア
パーセル５に設けられた音響管１９．２０の開口、２３
．２４［前部ドア９，１ｏにマウントされた中高音用ス
ピーカである。FIG. 1 shows the structure of a vehicle-mounted speaker according to an embodiment of the present invention. In Figure 1, 6 is the rear parcel, 6 is the rear seat, 7.8 is the rear door, 9, 1Q is the front door, 11.12 is the front / -to, 13.14 is the curl side, 16.16 17 and 18 are the frame, 17 and 18U driver units, 19 and 20 are the front doors 9 and 10, the sides of the frames 16 and 16, sound tubes of different lengths that are integrally formed in advance on the rear seat 6, and 21 and 22 are the rear Opening of acoustic tube 19.20 provided in parcel 5, 23
．． 24 [This is a mid-high frequency speaker mounted on the front door 9, 1o.

以上のように構成された車載用スピーカについて、以下
その動作について説明する。左右側チャンネルの音楽信
号（Ｌ＋Ｒ）は前部ドア９，１゜に取り付けたドライバ
ユニット１７．１８に入力される。ドライバユニット１
７．１８の背面には前部ドア９，１０からフレーム１５
．１６の側面、後部ンート６に予め一体成形された音響
管１９゜２０が配置され、その開口２１．２２がリアパ
ーセル５に設けられているため、ドライバユニット１７
．１８の背面の音は音響管１９．２０中を伝搬して、ド
ライバユニソ）１７．１８の前面からの音とともに開口
２１．２２より車室内に放射される。ドライバユニット
１７．１８の前面と背面の音の位相は逆転しているが、
音響管１９．２０の長さを低域限界周波数の波長の１／
２となるよう設定するならば、音響管１９．２０はこの
周波数で共振し、またドライバユニッ）１７．１８の前
面と背面の音は同位相となり車室内で足し合わされる。The operation of the vehicle-mounted speaker configured as described above will be described below. The left and right channel music signals (L+R) are input to driver units 17 and 18 attached to the front doors 9 and 1 degrees. Driver unit 1
7. On the back of 18, from the front doors 9, 10 to the frame 15
．． A sound tube 19° 20 integrally molded in advance is arranged on the side of the driver unit 16 and the rear trunk 6, and its openings 21 and 22 are provided in the rear parcel 5, so that the driver unit 17
．． The sound from the rear side of the driver unit 18 is propagated through the acoustic tubes 19 and 20, and is radiated into the vehicle interior through the opening 21 and 22 along with the sound from the front side of the driver unit 17 and 18. Although the phase of the sound at the front and back of the driver unit 17 and 18 is reversed,
The length of the acoustic tube 19.20 is 1/ of the wavelength of the low limit frequency.
2, the acoustic tubes 19, 20 will resonate at this frequency, and the sounds from the front and rear sides of the driver units (17, 18) will be in phase and will be added together inside the vehicle.

また、中高音は前部ドア９，１０にマウントされた中高
音用スピーカ２３．２４で再生される。Further, mid-high tones are reproduced by mid-to-high tones speakers 23 and 24 mounted on the front doors 9 and 10.

以上のように本実施例によれば、ドライバユニ７）１７
，１８の背面に異なる長さの音響管１９゜２０を配置し
音響管１９．２０の共振とその長さによる位相反転効果
を利用して、相互に音圧レベルの低い部分を補い合って
音響出力の大幅な増大を図るものである。As described above, according to this embodiment, the driver unit 7) 17
, 18 are arranged with acoustic tubes 19 and 20 of different lengths, and by utilizing the resonance of the acoustic tubes 19 and 20 and the phase inversion effect due to their lengths, they mutually compensate for the low sound pressure level parts and output sound. The aim is to significantly increase the number of employees.

第４図は本実施例と従来のものについて、車室内での音
圧スペクトラム特性を比較している。音源はピンクノイ
ズであり、２０　Ｈｚから２０　ＫＨｚの帯域で１／３
オクターブ毎にスペクトラム分析を行なった結果である
。第２図の結果を得た実施例では、ドライバｆｉ１４Ｉ
ｆｆ口径のダイナミックスピーカ、音響管は直径１ｏα
、全長３ｍのストレートの管であった。また、従来例に
ついてはキャビネット容積２リツトルのバスレフ型、ス
ピーカユニットは１２ｆｆ口径であり、前部両ドアに搭
載した。同図の結果より、１００Ｈｚ以下の低音域にお
いて１５ｄＢ以上と大幅な音圧レベルの向上が図られて
いる。又、二つのドライバユニット１７．１８の背面に
、異なる長さの並列な二つの音響管１９．２０’ｉ配置
し、音源として無指向性と見なせる低域成分について上
記音響管で再生し、中高音は前部ドア９，１０にマウン
トされた中高音用スピーカ２３．２４で再生して、音像
の広がり感をだすものである。FIG. 4 compares the sound pressure spectrum characteristics in the vehicle interior between this embodiment and the conventional one. The sound source is pink noise, which has a frequency of 1/3 in the band from 20 Hz to 20 KHz.
This is the result of spectrum analysis performed for each octave. In the example in which the results shown in FIG. 2 were obtained, the driver fi14I
ff diameter dynamic speaker, acoustic tube diameter 1oα
It was a straight pipe with a total length of 3 m. The conventional example is a bass reflex type with a cabinet volume of 2 liters, and the speaker unit is 12ff in diameter and mounted on both front doors. From the results shown in the figure, a significant improvement in the sound pressure level of 15 dB or more is achieved in the low frequency range of 100 Hz or less. In addition, two acoustic tubes 19,20'i of different lengths are placed in parallel on the back of the two driver units 17,18, and the acoustic tubes reproduce low-frequency components that can be considered omnidirectional as a sound source. High-pitched sounds are reproduced by medium and high-pitched sound speakers 23 and 24 mounted on the front doors 9 and 10 to create a sense of spaciousness in the sound image.

以下、本発明の第２の実施例について、図面を参照しな
がら説明する。A second embodiment of the present invention will be described below with reference to the drawings.

第２図は本発明の第２の実施例における車載用スピーカ
の構造図を示すものである。第２図において、第１の実
施例と同一構成要件には同一番号を付した。第２図に於
て、２５．２６はドライバユニット、２７．２８は後部
ドア７．８からフレーム１５．１６の側面、リアバーセ
ル５に予め一体成形により構成した音響管、２９，３０
はリアバーセル６に設けた音響管２７．２８の開口であ
る０ 以上のように構成された車載用スピーカの構造について
、以下その動作について説明する。FIG. 2 shows a structural diagram of a vehicle-mounted speaker according to a second embodiment of the present invention. In FIG. 2, the same components as those in the first embodiment are given the same numbers. In Fig. 2, 25.26 is a driver unit, 27.28 is an acoustic tube formed by integral molding from the rear door 7.8 to the side of the frame 15.16, and the rear bar cell 5, 29, 30.
is the opening of the acoustic tube 27, 28 provided in the rear bar cell 6.The operation of the structure of the vehicle-mounted speaker constructed as described above will be described below.

左右両チャンネルの音楽信号（Ｌ＋Ｒ）の内、電気的に
分割された低域成分は後部ドア７．８に取り付けたドラ
イバユニット２５．２６に入力される。ドライバユニッ
ト２５．２６の背面には後部ドア７．８からフレーム１
５．１６の側面、リアパーセル已に予め一体成形された
音響管２７゜２８が配置され、その開口２９．３０がリ
アバーセル５に設けられているため、ドライバユニット
２５．２６の背面の音は音響管２７．２８中を伝搬して
、ドライバユニット２５．２６の前面からの音とともに
開口２９，３０より車室内に放射される。ドライバユニ
ッ）２５．２６の前面と背面の音の位相は逆転している
が、音響管２７　、２８の長さを低域限界周波数の波長
の１／２となるよう設定するならば、音響管２７．２８
はこの周波数で共振し、またドライバユニット２５．２
６の前面と背面の音は同位相となり車室内で足し合わさ
れる。中高音は前部ドア９，１ｏにマウントされた中高
音用スピーカ２３．２４で再生される。Of the left and right channel music signals (L+R), electrically divided low frequency components are input to a driver unit 25.26 attached to the rear door 7.8. At the back of the driver unit 25.26, from the rear door 7.8 to the frame 1
Acoustic tubes 27 and 28, which are integrally molded in advance, are arranged on the sides of the driver unit 25 and 16, on the rear parcel side, and the openings 29 and 30 of the acoustic tubes are provided in the rear parcel 5, so that the sound from the back of the driver unit 25 and 26 is The sound propagates through the tubes 27 and 28 and is radiated into the vehicle interior through the openings 29 and 30 along with the sound from the front of the driver unit 25 and 26. The phases of the sounds on the front and rear sides of the driver unit (driver unit) 25 and 26 are reversed, but if the length of the acoustic tubes 27 and 28 is set to be 1/2 of the wavelength of the low limit frequency, the acoustic tube 27.28
resonates at this frequency, and the driver unit 25.2
The sounds from the front and rear of the 6 are in phase and added together inside the vehicle. Mid-high tones are reproduced by mid-to-high tones speakers 23 and 24 mounted on the front doors 9 and 1o.

以下、本発明の第３の実施例について、図面を参照しな
がら説明する。A third embodiment of the present invention will be described below with reference to the drawings.

第３図は本発明の第３の実施例における車載用スピーカ
の構造図を示すものである。第３図において、第１の実
施例と同一構成要件には同一番号を付した。第３図に於
て、３１．３２はドライバユニット、３３．３４はカー
ルサイド１３．１４から、フレーム１５．１６の側面、
リアバーセル６に予め一体成形により構成した音響管、
３６゜３６はリアバーセル５に設けた音響管３３．３４
の開口である。FIG. 3 shows a structural diagram of a vehicle-mounted speaker according to a third embodiment of the present invention. In FIG. 3, the same components as in the first embodiment are given the same numbers. In Figure 3, 31.32 is the driver unit, 33.34 is the side of the frame 15.16 from the curl side 13.14,
An acoustic tube formed integrally with the rear bar cell 6 in advance,
36°36 is the sound tube 33.34 installed in the rear bar cell 5
It is the opening of

以上のように構成された車載用スピーカについて、以下
その動作について説明する。左右両チャンネルの音楽信
号（Ｌ＋Ｒ）（ｑカールサイド１３゜１４に取り付けた
ドライバユニット３１．３２に入力される。ドライバユ
ニノ１−３１．３２の背面には、カールサイド１３．１
４から、フレーム１５．１６の遡１面、リアバーセル６
に予め一体成形された音響管３３．３４が配置され、そ
の開口３５．３６がリアバーセル５に設けられているた
め、ドライバユニット３１．３２の背面の音は音響管３
３．３４の中金伝搬して、ドライバユニット３ｊ、３２
の前面からの音とともに開口３５゜３６より車室内に放
射される。ドライバユニット３１．３２の前面と背面の
音の位相は逆転しているが、音響管３３．３４の長さを
低域限界周波数の波長の１／２となるよう設定するなら
ば、この周波数で共振し、またドライバユニ７）３１゜
３２の前面と背面の音は同位相となり車室内で足し合わ
される。また、中高音は前部ドア９，１Ｑにマウントさ
れた中高音用スピーカ２３．２４で再生される。The operation of the vehicle-mounted speaker configured as described above will be described below. Music signals (L+R) of both left and right channels (input to the driver unit 31.32 attached to the q curl side 13゜14. On the back of the driver unino 1-31.32, the curl side 13.1
From 4, frame 15.16 retro 1st page, rear bar cell 6
Since acoustic tubes 33, 34, which are integrally molded in advance in
3.34 is propagated to the driver units 3j, 32
The sound is radiated into the vehicle interior through the openings 35° and 36 along with the sound from the front of the vehicle. The phases of the sound on the front and rear sides of the driver units 31 and 32 are reversed, but if the length of the acoustic tubes 33 and 34 is set to be 1/2 of the wavelength of the low limit frequency, at this frequency It resonates, and the sounds from the front and back of the driver unit 7) 31 and 32 become in phase and are added together inside the vehicle. Further, mid-high tones are reproduced by mid-to-high tones speakers 23 and 24 mounted on the front doors 9 and 1Q.

以上のように第２．第３の実施例によれば、ドライバユ
ニット２５，２６，３１．３２の背面に音響管２７．２
８，３３．３４を配置し、この共振とその長さによる位
相反転効果を利用して、音響出力の大幅な増大を図るも
ので、その動作は第１の実施例とほぼ同じである。ただ
音響管２γ。As mentioned above, the second. According to the third embodiment, an acoustic tube 27.2 is provided on the back side of the driver unit 25, 26, 31.32.
8, 33, and 34, and by utilizing this resonance and the phase inversion effect due to its length, the acoustic output is significantly increased, and its operation is almost the same as the first embodiment. Just an acoustic tube 2γ.

２８．３３．３４の全長が短くなるため低域限界周波数
が上昇し第１の実施例に比べるとやや低音域の拡大が困
難となるが、音響管２７．２Ｂ。Since the total length of the acoustic tube 27.2B is shortened, the low limit frequency increases and it becomes somewhat difficult to expand the low frequency range compared to the first embodiment.

３３．３４ｉ前部ドア９，１ｏまで延長する必要がなく
車体の構造が簡略化されるものである。33.34i It is not necessary to extend to the front doors 9, 1o, and the structure of the vehicle body is simplified.

なお、上記実施例では音響管の断面形状について記載し
ていないが、第６図に示すように、（Ａ）円形、（Ｂ）
角型、（Ｃ）多角形、（Ｄ）不整形の何れでも良くその
断面積が音響管として必要な断面積とひとしければ任意
の形状とすることができるものである。Although the cross-sectional shape of the acoustic tube is not described in the above embodiment, as shown in FIG. 6, (A) circular, (B)
It may be square, (C) polygonal, or (D) irregular, and may have any shape as long as its cross-sectional area is equal to the cross-sectional area required for the acoustic tube.

また、上記実施例では音響管はその断面積が全長一定で
あるストレート管であったが、音響管の開口に行くに伴
い断面積が大きくなるホーン状とするならば、音響管中
を伝搬する音と車室内空間とのインピーダンス整合が良
好となり、音圧特性の乱れが少なくなる。第６図はドア
開閉時の構造を示すもので第６図人は開放時の、第６図
Ｂは閉じた状態を示し、音響管２９の切断面の周囲に独
立気泡の高分子材３０を固着して音のもれを防止する構
造になっている。In addition, in the above embodiment, the acoustic tube was a straight tube with a constant cross-sectional area over the entire length, but if it were to be shaped like a horn, with the cross-sectional area increasing as it approaches the opening of the acoustic tube, the sound tube would propagate through the tube. Impedance matching between the sound and the interior space of the vehicle is improved, and disturbances in sound pressure characteristics are reduced. FIG. 6 shows the structure of the door when it is opened and closed. FIG. 6 shows the door when it is open, and FIG. 6B shows the door when it is closed. The structure is fixed to prevent sound leakage.

発明の効果 本発明は、車の構造体であるドア或はフレームの成形に
際して異なる長さの二つの並列な音響管を構成せしめ、
その片側にドライバユニットを設け、開口をリアパーセ
ルに配置することにより、低音域において音響管の共振
による大幅な音響出力の増大を実現できる。また、音響
管の断面積を開口に行くに従い増加させたホーン形状と
することにより、ホーン効果による音響出力の増大全図
れるもので、予め車体に音響管が構成され、音響管とし
て必要な長さと断面積が確保されているため、従来のよ
うに低音限界がキャビネット容積で規制されることなく
、最近の音楽信号の大幅な質の向上に対応した低音域の
十分な再生が可能な車載用スピーカを実現できるもので
ある。Effects of the Invention The present invention configures two parallel acoustic tubes of different lengths when molding a door or frame, which is a structure of a car, and
By providing a driver unit on one side and arranging the opening in the rear parcel, it is possible to achieve a significant increase in acoustic output in the low frequency range due to the resonance of the acoustic tube. In addition, by creating a horn shape in which the cross-sectional area of the acoustic tube increases toward the opening, it is possible to fully increase the acoustic output due to the horn effect. Because the cross-sectional area is secured, the bass limit is not limited by the cabinet volume as in the past, and the car speaker is capable of reproducing sufficient bass to accommodate the significant improvement in the quality of recent music signals. It is possible to realize this.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例における車載用スピーカの構
造図、第２図は本発明の第２の実施例における車載用ス
ピーカの構造図、第３図は本発明の第３の実施例におけ
る車載用スピーカの構造図、第４図は本発明と従来の車
載用スピーカの車室内における音圧スペクトラム特性図
、第６図は本発明の音響管の断面図、第６図はドアに設
ける音響管のドアの開閉時における構造図、第７図は従
来の車載用スピーカの構造図である。 ６・・・・・・リアバーセル、６・・・・・・後部ンー
ト、７゜８・・・・・・後部ドア、９，１０・・・・・
・前部ドア、１１゜１２・・・・・・前部ンート、１３
．１４・・・・・・カールサイド、１５．１６・・・・
・・フレーム、１７，１８，２６゜２６．３１，３２・
・・・・・ドライバユニット、１９゜２０．２７．２Ｂ
、３３．３４・・・・・・音響管、２１゜２２．２９，
３０，３６．３６・・・・・・音響管の開口、２３　、
２４・・・・・・中高音用スピーカ、３Ｑ・・印・独立
気泡の高分子材。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第６
図 囚開朕埒 （β）　閉頼吟 ２ｑ−音響管 ３０−＆立気泡の高分子材FIG. 1 is a structural diagram of a vehicle-mounted speaker according to an embodiment of the present invention, FIG. 2 is a structural diagram of a vehicle-mounted speaker according to a second embodiment of the present invention, and FIG. 3 is a structural diagram of a vehicle-mounted speaker according to a second embodiment of the present invention. FIG. 4 is a diagram of the sound pressure spectrum characteristics of the present invention and a conventional vehicle-mounted speaker in the vehicle interior, FIG. 6 is a cross-sectional view of the acoustic tube of the present invention, and FIG. FIG. 7 is a structural diagram of a conventional vehicle-mounted speaker, showing the structure of the acoustic tube when the door is opened and closed. 6...Rear bar cell, 6...Rear trunk, 7゜8...Rear door, 9,10...
・Front door, 11° 12...Front door, 13
．． 14... Carl side, 15.16...
・Frame, 17, 18, 26° 26. 31, 32・
...Driver unit, 19°20.27.2B
, 33.34...Acoustic tube, 21°22.29,
30,36.36...opening of acoustic tube, 23,
24...Speaker for medium and high frequencies, 3Q...marked, closed cell polymer material. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 6
Picture Prisoner Kaishu (β) Kairaigin 2q-Acoustic Tube 30-&Bubble Polymer Material

Claims (8)

【特許請求の範囲】[Claims] （１）車の構造体を利用して異なる長さの並列な音響管
を構成し、前記音響管の入口にドライバユニットを備え
、リアパーセルに前記音響管の開口が設けられたことを
特徴とする車載用スピーカ。(1) Parallel acoustic tubes of different lengths are configured using the structure of a car, a driver unit is provided at the entrance of the acoustic tube, and an opening of the acoustic tube is provided in the rear parcel. In-vehicle speakers. （２）各音響管長さは双方の共振条件が音圧周波数特性
の相互のピーク・ディップを補いあうように設定されて
いることを特徴とする特許請求の範囲第１項記載の車載
用スピーカ。(2) The vehicle-mounted speaker according to claim 1, wherein the length of each acoustic tube is set so that both resonance conditions compensate for each other's peaks and dips in sound pressure frequency characteristics. （３）ドライバユニットを前部ドアに設けたことを特徴
とする特許請求の範囲第１項記載の車載用スピーカ。(3) The vehicle-mounted speaker according to claim 1, wherein the driver unit is provided in a front door. （４）ドライバユニットを後部ドアに設けたことを特徴
とする特許請求の範囲第１項記載の車載用スピーカ。(4) The vehicle-mounted speaker according to claim 1, wherein the driver unit is provided in a rear door. （５）ドライバユニットをカールサイドに設けたことを
特徴とする特許請求の範囲第１項記載の車載用スピーカ
。(5) The vehicle-mounted speaker according to claim 1, wherein the driver unit is provided on the curl side. （６）音響管の断面積が開口部に行くにしたがい大きく
なることを特徴とする特許請求の範囲第１項記載の車載
用スピーカ。(6) The vehicle-mounted speaker according to claim 1, wherein the cross-sectional area of the acoustic tube increases as it approaches the opening. （７）音響管の断面積が一定であることを特徴とする特
許請求の範囲第１項記載の車載用スピーカ。(7) The vehicle-mounted speaker according to claim 1, wherein the sound tube has a constant cross-sectional area. （８）ドアに設けられる音響管においてドアの開閉時に
おける構造はその切断面の周囲に音の漏れを防止するよ
うに独立気泡の高分子材が固着されたことを特徴とする
特許請求の範囲第１項記載の車載用スピーカ。(8) Claims characterized in that the sound tube provided in the door has a structure in which a closed-cell polymeric material is fixed around the cut surface to prevent sound leakage when the door is opened and closed. The in-vehicle speaker according to item 1.
JP27252286A 1986-11-14 1986-11-14 On-vehicle speaker Pending JPS63125095A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27252286A JPS63125095A (en) 1986-11-14 1986-11-14 On-vehicle speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27252286A JPS63125095A (en) 1986-11-14 1986-11-14 On-vehicle speaker

Publications (1)

Publication Number Publication Date
JPS63125095A true JPS63125095A (en) 1988-05-28

Family

ID=17515067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27252286A Pending JPS63125095A (en) 1986-11-14 1986-11-14 On-vehicle speaker

Country Status (1)

Country Link
JP (1) JPS63125095A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0451800A (en) * 1990-06-20 1992-02-20 Matsushita Electric Ind Co Ltd On-vehicle speaker equipment
JP2009510856A (en) * 2005-09-28 2009-03-12 ダイムラー・アクチェンゲゼルシャフト Automotive speaker system using a cavity formed by a support structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0451800A (en) * 1990-06-20 1992-02-20 Matsushita Electric Ind Co Ltd On-vehicle speaker equipment
JP2009510856A (en) * 2005-09-28 2009-03-12 ダイムラー・アクチェンゲゼルシャフト Automotive speaker system using a cavity formed by a support structure
US8044413B2 (en) 2005-09-28 2011-10-25 Daimler Ag Loudspeaker system for motor vehicles utilizing cavities formed by supporting structures

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