| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable sound reproducing device and a radio receiver which can solve the problems of a user being forced have lis surrounding sounds reach the ears, its long-time usage results in fatigue or cause hearing impairment, and with which person in hearing impaired persons can easily listen to reproduced sounds. SOLUTION: In a loudspeaker, used in a portable sound reproducing device body 5 or a portable radio receiver, etc., a left side bone-conduction loudspeaker section 1 and a right side bone-conduction loudspeaker section 2 are mounted on a head 6 by a head band 3, etc., sound wave oscillations are given to cranial bones by the loudspeakers 1 and 2, so that a user can perceive sounds.
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