| 摘要 |
PROBLEM TO BE SOLVED: To provide a bone conduction speaker which reduces pain of a human body and fatigue feeling while improving the efficiency of bone conduction to be transferred to a vibrating lid by adopting a coil spring. SOLUTION: The bone conduction speaker comprises: a case main body 10 with an internal flight 11 opened vertically in a fixed width on an inner circumferential side projectingly provided therein; an iron cone 2 arranged at a center position below the internal flight 11 in the case main body 10; a ring-shaped magnet 3 arranged outside the iron core 2; a voice coil 4 located between the iron core 2 and the magnet 3; a vibrating member 5 connected an upper part of the voice coil 4 to receive a vibration signal generated in the voice coil 4; and a coil spring 6 provided between a lower part of the vibrating member 5 and the internal flight 11 or its peripheral part. COPYRIGHT: (C)2008,JPO&INPIT
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