| 摘要 |
PROBLEM TO BE SOLVED: To provide a hearing device of an easy constitution.SOLUTION: The hearing device comprises a cartilage transmission vibration source which transmits vibration to a cartilage transmission part brought into contact with an outside of a root of an ear. An inner edge of an ear hook brought into linear contact with the outside of the root of the ear so as to wrap around along the outside is made to function as the cartilage transmission part. The ear hook comprises an elastic material similar to an ear cartilage in acoustic impedance. The cartilage transmission vibration source is arranged near a portion the nearest to an external acoustic meatus entrance outside of a cartilage of the root of the ear. A microphone, a power source part, and a short distance communication part with a portable telephone are constituted separately from the cartilage transmission part. In the case of an integral constitution, a battery is disposed between the microphone and the cartilage transmission part. A through hole in the center of the cartilage transmission part to be inserted into the external acoustic meatus entrance is opened and closed with a shutter driven with a noise detection signal etc. from the outside. |
