| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an LED illumination lamp which is fixed to the tip of a strut erected on the ground to illuminate a road, or the like, attains longer service life and energy saving, and enables easy maintenance. <P>SOLUTION: The LED illumination lamp 2 fixed to the tip 1a of the strut 1 erected on the ground includes LED units 2a, 2b, dedicated power supplies 31, 32 which supply a drive current for driving the LED units 2a, 2b; a counting part 37 which counts an accumulated driving time of the LED units 2a, 2b; current control parts 38, 39 which increase the drive current accompanying the increase in the counted accumulated driving time; and a display part 41 which displays a current value level of the drive current according to the accumulated driving time. <P>COPYRIGHT: (C)2011,JPO&INPIT |
