Patent ID: 8942406
Filing Date: 2015-01-27
Classification: H04R

Abstract:
1. A canal-type receiver comprising an ear piece used while being inserted into the external auditory canal, wherein the ear piece has a substantially cylindrical shape and includes a cylindrical portion including a sound guiding tube emitting a sound wave, radiated from a sound-emission unit in the receiver, into the external auditory canal, and the sound guiding tube is configured that a directional sound wave radiation axis of the sound wave faces a predetermined position of a wall of the external auditory canal in such a state that the cylindrical portion of the ear piece is mounted at a predetermined position in the external auditory canal, whereby the sound wave radiated from the sound guiding tube is reflected by a portion of the wall of the external auditory canal to be arrived at the eardrum, thereby to have a sound image localized to forward, backward, upward or downward.