Patent ID: 8515116

Claim:
A headphone comprising: a housing having a receiving space therein and at least one or more air inlets at one side thereof, the housing being opened at the front side thereof, a speaker placed in the receiving space, for generating audio sounds according to input electrical signals, a cover for closing the front side of the housing, the cover forming a plurality of audio sound through-holes through which the audio sounds from the speaker pass and a waveguider slidably and rotatably installed to the housing, surrounding an outermost perimeter of the housing, wherein the waveguider comprises: a kernel part protrudently formed, for guiding the audio sounds passing through the cover to the inner ear and an opening/closing part for closing at least one or more air inlets according to a rotation angle thereof to control the amount of air that instantly flows into the housing, the opening/closing part rotatable around the housing relative to the kernel part of the waveguider.