| 摘要 |
PROBLEM TO BE SOLVED: To provide a wind turbine having a simple structure, showing high strength of blade and smooth rotation.SOLUTION: This invention relates to a wind turbine 1 constituted by a revolving shaft 2 and a plurality of blades 3 extending from the revolving shaft 2 in its radial direction. In this invention, the revolving shaft 2 is formed into a concave surface 2c of which diameter is gradually decreased from both ends 2a, 2b in its axial direction toward its center; each of the blades 3 has a wind-receiving part 3a protruded toward one of the peripheral directions of the revolving shaft 2 and formed into a concave surface at its rear side; that an edge part 3b of the wind-receiving part 3a at the revolving shaft is formed into a shape along the concave surface 2c of the revolving shaft 2; and that the outer edge part 3c of the wind-receiving part 3a is formed into an arc-shape extending toward the outside in a radial direction of the revolving shaft 2.SELECTED DRAWING: Figure 1 |
