| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a liquid-cooled LED lighting device that ensures high reliability, by preventing a temporary temperature rise of piping or a circulating pump, when an LED light source is turned off. <P>SOLUTION: The liquid-cooled LED lighting device includes an LED light source 10; a liquid-cooling system 3 having a heat receiving jacket, a heat-dissipating radiator, a circulating pump, a reserve tank, and a fan; an LED-light-source driving power supply 28 for supplying power to the LED light source 10; a liquid-cooling-system driving power supply 30 for supplying power to the liquid-cooling system 3; and a timer circuit (a control means) 29, that allows power supply from the liquid-cooling-system driving power supply 30 to the liquid-cooling system 3 which is to be continued only for a fixed period, even after the stoppage of power supply by the LED-light-source driving power supply 28 to the LED light source 10. <P>COPYRIGHT: (C)2010,JPO&INPIT |
