| 摘要 |
PURPOSE: A vibration speaker is provided to execute speaker or receiver function more effectively by equipping upper and lower coil and inputting high frequency signal and low frequency signal selectively. CONSTITUTION: A case(100) has a vibration plate(110,120) which is installed at both of upper side and lower side. An inside yoke(200) is installed at the inside of the case(100), and has a magnet(210) which is installed at the inside of center. An external yoke(300) is supported and installed elastically through a spring(310) at the inside of both side of case corresponding to the inside yoke(200). An upper(400) and lower coil(500) is extended and formed toward the magnet(210) of the inside yoke(200) from the inside of both side of the vibration plate(110,120), and inputs low frequency signal and high frequency signal selectively.
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