| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a matter getting into the vicinity of a light source from being heated by providing a detecting part for detecting an object invading into a prescribed area from the light source as an intruder, and an interrupting part for interrupting the feed to the light source according to this. SOLUTION: A guard 7 is formed into a circular section by use of a metallic material, and mounted on a reflecting plate so as to protect a lamp from the side opposite to the reflecting plate in a separated state. Since the static capacity of the guard 7 itself is changed when an object is touched thereto, the guard 7 forms a detecting part 7 as for detecting the touched object as an intruder getting into a prescribed distance from the light source. A control circuit 8 is provided within a base 1 and electrically connected to the guard 7. This control circuit 8 interrupts the feed to the lamp when the electrostatic capacity of the guard 7 is changed.</p> |
