CPC H04R 7/08 (2013.01) [H04R 1/025 (2013.01); H04R 1/288 (2013.01); H04R 7/18 (2013.01); H04R 7/26 (2013.01); H04R 2307/023 (2013.01)] | 18 Claims |
1. A vibration device comprising:
a glass diaphragm;
an exciter which is fixed to the glass diaphragm and vibrates the glass diaphragm;
an enclosing member which defines an internal space by enclosing a portion, including a fixing position of the exciter, of the glass diaphragm, one end portion of the glass diaphragm being exposed to outside the internal space through an opening of the internal space; and
a shielding member for acoustic shielding between the opening and the glass diaphragm, the shielding member dividing the glass diaphragm into an excitation region located inside the internal space and a vibration region located outside the internal space, wherein a ratio Ss/Sv of an area Ss of the excitation region of the glass diaphragm to an area Sv of the vibration region of the glass diaphragm is 0.01 or larger and 1.0 or less.
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