Patent ID: 8269364

Claim:
A tidal power generator comprising: a hollow container defining a first opening and an opposite second opening, and comprising a supporting portion, the supporting portion defining a fixing hole; an impeller designed for unidirectional rotation, the impeller being positioned at the second opening and configured for unidirectionally rotating pushed by air flow, wherein the impeller comprises a cylinder body, a shaft extending through the body and corresponding to the fixing hole, and a plurality of blades radially extending from the body; the shaft comprises a first end and an opposite second end at two opposite sides of the cylinder body; a sleeve fixed to the container at the second opening, wherein the sleeve defines a receiving cavity and a through hole corresponding to the fixing hole, the through hole is communicated with the receiving cavity, the impeller is interposed between the sleeve and the supporting portion, the first end of the shaft extends and inserts through the fixing hole, the second end of the shaft extends and inserts through the through hole; an electric generator fixed in the receiving cavity and comprising a stator and a rotor extending from the stator, the rotor fixedly connected to the second end of the shaft of the impeller, the rotor rotating with rotation of the impeller so that the stator outputting electrical energy; and a chargeable power source configured for storing the output electrical energy.