| 摘要 |
PROBLEM TO BE SOLVED: To enable lighting by supplying electric power to an LED in noncontact with a power source even if power supply wiring is not executed in a door.SOLUTION: In an electromagnetic induction system lighting device for lighting a light source installed in a door when closing the door and putting out the light when opening, the light source is installed in the door or a grip of the door, and an induction coil for electromagnetic induction is installed on the movable side such as the door and a door installing tool, and a power supply coil for the electromagnetic induction is installed on the opposite side such as a column, a door frame and the door installing tool by approaching the induction coil when closing the door and separating from the induction coil when opening the door, and the power supply coil and the induction coil mutually approach in noncontact in a door-closed state, and the light source is lighted by an induction current by inducing the induction current to the noncontact induction coil by a power source supplied to the power supply coil, and the light source is put out by cutting off the induction current when separating the power supply coil and the induction coil by opening the door.SELECTED DRAWING: Figure 1 |
