| 摘要 |
PROBLEM TO BE SOLVED: To obtain a voice coil being suitable for a high input and having a heat resistance, a light weight and a high strength. SOLUTION: The voice coil device 10 has a bobbin 11 formed by rounding a thin plate material composed of a high-strength metallic material in a tubular shape, and a heat-resistant fiber-resin composite film 12 attached on the surface of the bobbin 11 so as to coat the mating surface of the thin plate material for the bobbin 11. The voice coil device 10 further has a voice coil 13 wound on the heat-resistant fiber-resin composite film 12. COPYRIGHT: (C)2006,JPO&NCIPI
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