Title: Horn speaker
Application Number: 85103167 Application Date: 1985.04.23
Publication Number: 1004385 Publication Date: 1986.10.22
Approval Pub. Date: Granted Pub. Date: 1991.12.04
International Classifi-cation: H04R9/02
Applicant(s) Name: Ibuki Kogyo Co., Ltd. Address:
Inventor(s) Name:
Attorney & Agent: CAO JIHONG LI XIANCHUN
Abstract:
     The horn speaker consists of an annular permanent magnetic-iron, a centre magnetic pole with a certain gap formed in the inner face of the magnetic iron, and a bowl vibrating film twined with a motive coil twining around its bottom. When the bottom of the vibrating film is inserted into the gap and the motive coil is electrified, and the vibrating film vibrates, producing sound waves. In order to control the heat produced by the motive coil and the centre magnetic pole, the inner circle of the bottom of the vibrating film is contacted with the cooling side of the electronic cooling parts; at the same time, radial rills are designed in front of the centre magnetic pole.
Time: 16
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