Patent ID: 8270650
Filing Date: 2012-09-18
Classification: H04R

Abstract:
1. A hearing aid, comprising: an ear hook bent for hooking; an earphone linked to a front end side of the ear hook; and a main body case linked to a rear end side of the ear hook, wherein the ear hook has a wiring electrically connecting the earphone and the main body case, the main body case has: a electrical connection part electrically connected with the wiring, a front microphone, and a rear microphone provided in that order, from the front end side to the rear end side of the main body case, inside the main body case; a front sound hole provided to the outer peripheral portion of the electrical connection part or to the front end side portion of the main body case from the electrical connection part, out of the outer wall face of the main body case; and a rear sound hole provided to the rear of the front sound hole out of the outer wall face of the main body case, the front sound hole and the front microphone are acoustically connected via a front sound guide path, the front sound guide path has a first space formed between the inner wall face of the main body case and the outer peripheral portion of the electrical connection part, and a second space formed between the electrical connection part and the front microphone, the front sound hole is provided to the outer wall face of the main body case corresponding to the first space, and the rear sound hole and the rear microphone are acoustically connected.