| 摘要 |
PROBLEM TO BE SOLVED: To provide a speaker that outputs sound and also emits a light whose luminance is changed with an electric signal. SOLUTION: A through-hole 35 is formed in the middle of a pole piece 24 of the speaker, a lamp 36 is fitted to the through-hole 35 so as to project forward from the through-hole 35 and a center cap 34 made of a transparent resin is placed to the lamp 36.
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