| 摘要 |
PROBLEM TO BE SOLVED: To obtain a physical hearing aid collecting voice clearly by providing a sound collection pipe to a focus of a reflecting plate and fitting an ear tube to other end. SOLUTION: A voice in front of a hearing aid is collected to a focus 2 of a reflecting plate 1 whose cross section is parabolic. Then the sound is collected by a sound collection pipe 3 whose opening is open a little longer in an upper direction on the parabolic axis. The voice is collected as it is in this way, then the voice quality is unchanged and a listener hears a natural sound before causing hard of hearing. Thus, when the voice collected by the sound collection tube 3 is heard by an ear tube 5 through a tube 4, a clear voice where voiced sounds and end of speech are clear is heard. Furthermore, when a grip 6 is fitted to a rear side of the reflection plate 1 or the like, the hearing aid is supported by a hand. |
