Patent ID: 7246655

Claim:
A heat transfer device, comprising: a sealed container; a fluid, which evaporates when heated and which condenses when heat is removed therefrom, encapsulated in the sealed container; a porous base layer disposed on an interior, bottom face of the container; a wick comprising a plurality of projections protruding upwardly from the base layer; and a guide unit, disposed on an interior face of the container, which guides fluid to the wick; wherein: the container comprises an interior upper face which is positioned above the plurality of projections of the wick; the guide unit comprises a plurality of projections projecting downwardly from the interior upper face; the fluid is guided by the guide unit and drips from the guide unit onto the plurality of projections of the wick; the guide unit further comprises an inclined face disposed on the interior upper face; and the plurality of projections of the guide unit are disposed substantially around the lowest portion of the inclined face.