| 摘要 |
PROBLEM TO BE SOLVED: To simply obtain a windmill having good efficiency in energy acquisition irrespectively of changes of a wind flow direction, capable of being simply installed and rotating with a small space occupying area due to the installation. SOLUTION: The windmill is designed to horizontally rotate. A plurality of blade shafts orthogonal to an output shaft are attached rotatably and across each other so as not to contact with each other. Two or more wind receiving blades are mounted on both sides of the blade shafts with the output shaft almost centered. An each other's mounting angle of the wind receiving blades with respect to the blade shaft is fixed in a condition twisted about 90 degrees or more. When the wind receiving blades on one side are at an angle making less resistance to a flow, the wind receiving blades on the opposite side are at an angle having resistance from the flow and the wind receiving blades rotating receive the wind flow and efficiently rotate in one direction. COPYRIGHT: (C)2007,JPO&INPIT
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