| 摘要 |
PROBLEM TO BE SOLVED: To allow an operation as a circulation type cooler even when an attitude of electronic equipment is varied three-dimensionally in any way to cool an electronic element. SOLUTION: A heat pipe 5 constitutes a closed loop comprising an evaporation part 6 fixed to an imaging element 4, a condensation part 10 fixed to a corner of a camera casing 2, a vapor phase path 7, and a liquid phase path 8. A gas flow passage 11 is formed in the condensation part 10 to circulate hollow portions of three hollow plane plates, and condensation areas 13, 14 are arranged in an area surrounded by the annular gas flow passage 11 and an area of enveloping gas flow passage 11. A working fluid brought into a gas phase by heat from the imaging element 4 in the evaporation part 6 flows into the gas flow passage 11 through the vapor phase path 7, comes from the gas flow passage 11 into at least one of the condensation areas 13, 14, even when the posture of an electronic equipment varied three-dimensionally in any way, and is liquefied while radiating the heat to a casing 2 wall face, and a liquid therein flows liquid phase path ports 17, 18 by the action of gravity to be returned to the evaporation part 6 through the liquid phase path 8. COPYRIGHT: (C)2007,JPO&INPIT |
