| 摘要 |
PROBLEM TO BE SOLVED: To effectively generate ions using vibrations of a speaker, and to sufficiently diffuse the generated ions outside a system. SOLUTION: The present invention relates to a speaker unit 1 comprising at least a vibrating member including a diaphragm 17 and a frame 10 for supporting the member, and a charging means A for charging the frame 10 or a constitutive member (magnetic circuit part or a cover 19) supported by the frame 10 with an ion generating material for ionizing ambient air is provided at a position where air vibration is received with the vibration of the vibrating member. COPYRIGHT: (C)2005,JPO&NCIPI
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