To provide a heat pipe that is flat in cross section and has superior thermal transport properties and thermal transport capability.
In a flat heat pipe 1, the inside of a flat container 2 having a large width relative to a thickness thereof is charged with a working fluid which evaporates by heating and condenses by heat radiation, the container 2 has flat inner walls 2a and 2b facing each other and sidewalls 2c connecting the fellow right and left ends of these flat inner walls 2a and 2b. A wick 3, which is so constructed as to be rectangular in cross section by a porous structure of sintered material, is arranged close to one flat inner wall 2a out of the flat inner walls 2a and 2b. Space is formed between the wick 3 and the other flat inner wall 2b out of the flat inner walls 2a and 2b to allow the steam of the working fluid to circulate therein. In addition, a gap between the wick 3 and the right and left sidewalls 2c and the space serve as a steam passage 4 in which the steam of the working fluid circulates.
KAWAHARA YOJI
SAITO YUJI
MOCHIZUKI MASATAKA
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