HEARING AID HAVING SOUNDPROOFING CAPILLARY FOR AGED PERSON HARD OF HEARING

摘要

PROBLEM TO BE SOLVED: To double the effect of the hearing aid with a simple mechanism by specifying the inner diameter and length of a capillary in order to completely interrupt noise. ;SOLUTION: When a person hard of hearing grasps a grip 3 and puts or inserts an ear pad part 7 on/into an ear hole, besides a speaker brings a voice sending part 1 spread like a funnel to the front of his (or her) mouth and enters voice to the voice sending part 1. In this case, the sending part is brought nearer to the mouth front side as much as possible so that voice does not spread in all directions. Then, a fist grasping the voice sending part 1 is shaped like a funnel and voice is sent into the funnel-like fist, so that its effect is increased. It is available to form the voice sending part 1 like a bell by a mold or to spread the part 1 by overlapping pipes of various sizes. A hole 4 opened on the grip part 3 is prepared for controlling air pressure in the pipe. In this case, a capillary having a smooth inwall consisting of ≤0.8 cm inner diameter and ≥50 cm length is used in order to send voice straight to a far place without weakening voice. Consequently noises can completely be interrupted.;COPYRIGHT: (C)2000,JPO