EARPHONE FREE FROM ELECTROMAGNETIC WAVE

摘要

PURPOSE: An earphone free from electromagnetic wave is provided to prevent to expose human body against electromagnetic wave because a speaker is separated from humane ear by a sound wave transmitting hollow tube. CONSTITUTION: The earphone free from electromagnetic wave comprises: a sound wave transmitting hollow tube(4) free from electromagnetic wave and exposed to outside; and a speaker(2) mounted in a radio body wherein sound generated from the speaker(2) is transmitted to ear through the sound wave transmitting hollow tube(4) without separate speaker for the earphone.