| 摘要 |
PROBLEM TO BE SOLVED: To provide an intercom handset which prevents waterdrops from being attached to all over the surface of a microphone device of an intercom handset case and transmits external sounds normally to secure an excellent communication status even when waterdrops are attached. SOLUTION: In a microphone support for mounting the microphone on the intercom handset case, a first projection is provided around the outer circumference of a surface opposite to a part where a microphone is inserted. An annular second projection higher than the first projection is provided inside the first projection. A waterproof sheet is held in the case by the first projection, and the second projection is pressed onto the waterproof sheet. COPYRIGHT: (C)2004,JPO&NCIPI
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