VOICE COIL, VOICE COIL INTEGRATED DIAPHRAGM, SPEAKER USING THEM, AND ELECTRONIC APPARATUS USING THE SPEAKER, AND APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an excellent voice coil adaptable to a high endurance to input level and satisfying downsizing and weight reduction of a speaker with respect to the speaker and the voice coil used for various acoustic apparatuses and information communication apparatuses.;SOLUTION: The voice coil of the speaker comprises a coil and a case for covering the coil, and the inside of the case is made vacuum. Since the coil of the voice coil is located under vacuum and brought into a deoxidizing state, the voice coil is not burn out, and the voice coil is configured to satisfying the downsizing and weight reduction of the speaker while realizing a high endurance to input level. Thus, problems of the high endurance to input level, downsizing and weight reduction can be solved.;COPYRIGHT: (C)2005,JPO&NCIPI