Canal type earphone with pressure equilibrium means

摘要

Disclosed herein is a canal type earphone with a pressure equilibrium means, capable of eliminating a pressure difference between a user's external auditory meatus and an outside during wearing of the canal type earphone. A pressure equilibrium means includes a side air passage through which air within a tube or air within a speaker unit in the canal type earphone is discharged to a side surface of a gasket or a side surface of the speaker unit, and a rear air passage through which air in the side surface of the speaker unit is discharged to the rear of the speaker unit.

主权项

1. A canal type earphone comprising:
a speaker unit; a housing receiving the speaker unit; an earpiece installed on an outer surface of a tube which is integrally formed at a front of the housing; a gasket installed between the speaker unit and the housing; and a pressure equilibrium means for discharging air within the tube or air within a space between a cover and a vibration plate of the speaker unit to a rear of the speaker unit, wherein the pressure equilibrium means comprises: a side air passage through which air within the tube or air within the speaker unit is discharged to a side surface of the gasket or a side surface of the speaker unit; and a rear air passage through which air in the side surface of the gasket or the side surface of the speaker unit is discharged to the rear of the speaker unit, and wherein the side air passage is a vent groove which is radially formed on a front or back surface of the gasket, and the vent groove is connected, at one end thereof, to a through-hole formed at a center of the gasket and connected, at another end thereof, to the side surface of the gasket.