| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide power feeding structure to a rotary body realizing power supply to the rotary body without using wiring connection and power source for power supply coming from the outside. <P>SOLUTION: In a rotary display 18, the tip of the motor shaft 46 of a stepping motor 44 is fixed at the axial center part of the partition wall part 24A of one side of a display main body 20 and a generator 48 is attached to the axial center of the partition wall part 24B of another side. When the rotation of the rotary display 18 is driven by the stepping motor 44, the coil 58 which is attached to the display main body 20 rotates in the magnetic field formed by the permanent magnet 56 of a generator shaft 50 fixed to the base 12 of a rotary display device 10 and electric power is generated in the coil 58. Then, the wiring connection and the power source for electric power supply coming from the outside become unnecessary by supplying the electric power to LEDs (light emitting diodes) 30 of an LED substrate 32 which constitute optical indicators provided in the rotary display 18. <P>COPYRIGHT: (C)2004,JPO</p> |
