| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting fixture with an active sensor, the lighting fixture detecting correctly existence of a moving body. SOLUTION: The lighting fixture which includes an antenna part 30 having a transmission antenna 33 to transmit radiowave and a receiving antenna 34 to receive the reflection wave reflected by an object, detects existence of a moving body B based on a difference of frequency of the transmission wave and the reflection wave, and controls lighting condition of a light source 1. The antenna part 30 is embedded inside the side wall 20 of the fixture body 2. Thus, since the light source 1 does not exist between the antenna part 30 and the detection object region A, the possibility that electrons moving around the inside of the bulb of the light source 1 is erroneously detected as the moving body B becomes small and existence of the moving body B can be correctly detected. COPYRIGHT: (C)2011,JPO&INPIT
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