摘要 |
PROBLEM TO BE SOLVED: To solve a problem that, in a conventional hands-free device for a cellular phone, an ear is covered with an earphone in order to freely use a hand so that a user is away from an ordinary life. SOLUTION: A user stops using an earphone and starts using a speaker so as not to be away from his ordinary life. Furthermore, the speaker is installed just above the ear and its sound volume is suitably suppressed so as to also protect the privacy in reception. Moreover, the speaker, a switch and a microphone are concentrically arranged so as to be installed like putting them on the head and simply mounted, thereby ensuring the freedom in both hands. COPYRIGHT: (C)2005,JPO&NCIPI
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