| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize energy saving of illumination in various facilities such as a store. <P>SOLUTION: In the LED lighting device 1, a human sensor 62 is arranged adjacent to (an LED array part (a lighting part) 56) with a plurality of LEDs 53 arranged along a length direction of a substrate part 4. When the human sensor 62 detects human existence, a first control means 84 makes the LEDs 53 (an LED array part (a lighting part) 56) lit. When a certain amount of time (time t1) measured by a counter 83 goes on after the sensor ceases to detect human existence, a second control means 85 switches a current detection resistance 89 so as to have a restrained state of lighting brightness of the LEDs 53 (the LED array part (the lighting part) 56). Further, when a certain amount of time (time t2) goes on after the sensor ceases to detect human existence, the first control means 84 makes the LEDs 53 (the LED array part (the lighting part) 56) turned off. <P>COPYRIGHT: (C)2012,JPO&INPIT |
