| 摘要 |
PROBLEM TO BE SOLVED: To make a mobile communication apparatus small-sized, light in weight and capable of easily hearing received voice even in noise and communicating in a low voice enough to prevent trouble even in public by making a speaker for hearing the received voice a bone conduction speaker separated from a main body. SOLUTION: This apparatus comprises a bone conduction speaker 1, a main body case 2 including a speaker amplifier, a microphone amplifier and a battery, a microphone part 3 located at the lower part inside the body case 2 and a cord 4 electrically connecting the body case 2 and the speaker 1. The speaker 1 is connected to the body case 2 by the cord 4 with about 15 cm length, and a finger picking part 5 with a cap shape, etc., is provided at the back of the vibrating part of the speaker 1 as necessary. In case of making a call and receiving an incoming call, one or two fingers are inserted into the finger picking part 5, and the speaker 1 is brought into light contact with the forehead, a temple, etc., to listen to receiving tone. As for transmission, a microphone input can be obtained sufficiently because the part 3 of the body case 2 of the mobile communication apparatus attached to the inside a wrist comes close to just around the mouth.
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