| 摘要 |
PURPOSE: A soundproof microphone head set is provided to obtain a blocking effect for external noise by about 20 dB using a microphone cover. CONSTITUTION: A bone conduction speaker(150) is attached to one side or the either side of a spring band(140). A microphone support bar(170) is connected to one side of the bone conduction speaker. A soundproof microphone(200) is formed in the other one side of the microphone support bar. The soundproof microphone comprises a microphone cover, the microphone formed in the microphone cover, and a vibration plate formed in the front side of the microphone cover. An ear hook(120) is attached to the other side of the bone conduction speaker. The input of the bone conduction speaker is connected to a code(330). The bone conduction unit of the bone conduction speaker comprises a yoke, a voice coil, an iron plate, an internal vibration plate, and a permanent magnet. |
