| 摘要 |
The present invention relates to a power generation technology using tidal power or wave power, especially relates to a power generation technology using a piezoelectric element. It is an object of the present invention to provide a power generation device for generating electric power in water or on a ship effectively with the use of tidal power or wave force. The present invention has such a structure that power generation modules (5a, 5b) having a piezoelectric element (14) are put between plates (1a, 1b, 1c) and the plates are placed between two flanges (9b, 10) fixed to a rod (3) penetrating the plates. When the rod (3) inclines due to a water flow, the piezoelectric element (14) is compressed by the two flanges (9b, 10) and thereby it generating the electric power. Moreover, when the rod (3) is restored from due to reduction of the water flow, thickness of the piezoelectric element (14) is restored and thereby it generating the electric power.
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