| 摘要 |
<p>Vertically long blades for a wind wheel, wherein movable blades which are rocked by centrifugal force when the vertically long blades rotate are mounted to the rear ends of the vertically long blades in the rotation direction thereof. In a high-speed wind, the braking effect of the movable blades maintains the rotational speed of the wind wheel at a specific level. Vertically long blades of a vertical axis wind wheel are mounted through support arms (5) in a vertically extending manner around a vertical main shaft (2) of the vertical axis wind wheel. Movable blades (7) are mounted to the rear ends of main body sections (6A) in the rotation direction thereof so that the movable blades can be rocked by centrifugal force caused by rotation of the wind wheel.</p> |
