| 摘要 |
PURPOSE:To obtain a wall fan of simple product construction by connecting a controller to a fan stand through a single fine optical fiber. CONSTITUTION:A photo-transistor 105a receives optical signals from an optical fiber 104 extended from a reel support shaft 102a. The optical fiber 104 between a fan stand 101 and a controller 106 changed from a power source cable to be automatically wound up, facilitates the use, and the thinned wire between the controller 106 and the fan stand 101 simplifies the wiring at the time of installation. |
