| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power feeding mechanism for a display provided with a wind turbine constituted by providing a blade of the wind turbine with a light emitting body to draw optional characters and pictures in a space by utilizing the visual afterimage phenomenon and capable of feeding electric power being required for light emission and control of light emission without causing improper contact from the outside by a simple configuration. <P>SOLUTION: This power feeding mechanism is composed of a coil fixed on a support column side holding a rotary shaft on which the wind turbine is fixed rotatably, surrounding the rotary shaft, and connected with AC power supply and a current transformer (CT:Current Transformer) attached to take AC current out of the coil while rotating together with the rotary shaft and connected to a power source circuit supplying electric power onto a rotating blade side. <P>COPYRIGHT: (C)2010,JPO&INPIT |
