CN2226796Y - 汽车电子喇叭 - Google Patents

汽车电子喇叭 Download PDF

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Publication number
CN2226796Y
CN2226796Y CN 95231225 CN95231225U CN2226796Y CN 2226796 Y CN2226796 Y CN 2226796Y CN 95231225 CN95231225 CN 95231225 CN 95231225 U CN95231225 U CN 95231225U CN 2226796 Y CN2226796 Y CN 2226796Y
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magnet
vibrating membrane
hooter
sound
cavity
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CN 95231225
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关福安
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Abstract

一种汽车电子喇叭,它包括外壳、磁铁、振动膜,磁铁与音喉固接在一起在两者之间有一空腔,此空腔内装有振动膜,反射筒装于音喉上,其特点是低频振荡电路的输出端经耦合电容与功率放大电路的输入端相连接,放大电路的两个输出端接振动膜上的线圈,本实用新型具有耗电少、无触点发热、使用寿命长、音质较原汽车喇叭好的优点。

Description

汽车电子喇叭
本实用新型涉及机动车信号装置领域,特别是一种汽车电子喇叭。
目前,国内外汽车用的喇叭均为电磁触点振荡式结构,它主要由电磁线圈上、下振动触点组成,未通电时上、下触点相接,通电时电流经接触的上、下振动触点流到电磁线圈中,从而产生磁斥力,电磁线圈失去磁斥力上、下振动触点迅速闭合并产生振动声音,该喇叭由于在通电和机械振动过程中产生热量,易导致触点过热烧熔,影响发音效果和使用寿命,还存在着功能单一、有杂音和耗电量大的缺点。
本实用新型的目的是提供一种具有优质的音响效果和长寿命的汽车电子喇叭。
本实用新型的目的是这样实现的:它包括外壳、磁铁、振动膜,磁铁与音喉固接在一起,在两者之间有一空腔,此空腔内装有振动膜,反射筒装于音喉上,其特点是低频振荡电路的输出端经耦合电容与功率放大电路的输入端相连接,放大电路的两个输出端接振动膜上的线圈,其中低频振荡电路由KD254、可调电阻组成;功率放大电路由大功率三极管和电容器组成。
本实用新型具有耗电少、无触点发热、使用寿命长、音质较原汽车喇叭好的优点。
以下结合附图对本实用新型作进一步说明。
图1是汽车电子喇叭的结构示意图。
图2是图1的电路图。
如图1—2所示,该汽车电子喇叭包括外壳5、永久磁铁7、振动膜6和音喉3,磁铁7与音喉3固接在一起,此空腔内装有振动膜6,在振动膜6上绕有线圈,反射筒4安装在音喉3上;集成片KD254外接电阻R1、R2和稳压管D2一起构成低频振荡电路;功率放大电路由NPN型大功率三极管Q和电容C1组成。由低频振荡电路产生的振荡信号,经大功率三极管Q放大后的信号从扬声器发出声音信号,D1是防止电源反相的二极管,R1是降压电阻,D2是稳压二极管,KD254的1脚接正极,3脚接负极,2脚接输出,4脚和5脚接电阻R2和W。

Claims (1)

1、一种汽车电子喇叭,它包括外壳、磁铁、振动膜,磁铁与音喉固接在一起,在两者之间有一空腔,此空腔内装有振动膜,反射筒装于音喉上,其特征是低频振荡电路的输出端经耦合电容与功率放大电路的输入端相连接,放大电路的两个输出端接振动膜上的线圈,其中低频振荡电路由KD254、可调电阻组成;功率放大电路由大功率三极管和电容器组成。
CN 95231225 1995-05-25 1995-05-25 汽车电子喇叭 Expired - Fee Related CN2226796Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 95231225 CN2226796Y (zh) 1995-05-25 1995-05-25 汽车电子喇叭

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 95231225 CN2226796Y (zh) 1995-05-25 1995-05-25 汽车电子喇叭

Publications (1)

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CN2226796Y true CN2226796Y (zh) 1996-05-08

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CN 95231225 Expired - Fee Related CN2226796Y (zh) 1995-05-25 1995-05-25 汽车电子喇叭

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100450824C (zh) * 2003-12-09 2009-01-14 徐福芳 高可靠、免维护的汽车电喇叭

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100450824C (zh) * 2003-12-09 2009-01-14 徐福芳 高可靠、免维护的汽车电喇叭

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