| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a boiling refrigerant type LED lighting system efficiently and uniformly cooling a light source unit to achieve high output and size reduction, and reducing variations in luminous efficiency and life of a plurality of LEDs. <P>SOLUTION: The boiling refrigerant type LED lighting system 1 includes: the light source unit 3 using an LED 11 as a light source; a boiling cooler 5 having a heat receiving part 15 receiving heat from the light source unit 3, a heat radiating part 16 radiating the heat that the heat receiving part 15 receives to the outside air and a circulation path circulating a coolant between the heat radiating part 16 and the heat receiving part 15; and a housing 2 containing the boiling cooler 5 and the light source unit 3. The heat radiating part 16 of the boiling cooler 5 is disposed above the heat receiving part 15, a coolant outlet in the heat receiving part 15 is directly communicated with a coolant inlet in the heat radiating part 16, and a coolant outlet in the heat radiating part 16 is communicated with a coolant inlet in the heat receiving part via a return passage. <P>COPYRIGHT: (C)2011,JPO&INPIT |
