Patent ID: 7249627

Claim:
A hybrid cooling device for cooling heat from an external heat source, comprising: a phase transition cooler in which a circulation loop of a refrigerant capable of phase transition is formed, said phase transition cooler comprising a branching section at one side thereof; and a fan being disposed in said branching section of said phase transition cooler, wherein said phase transition cooler comprises: an evaporation section being formed at one end of said phase transition cooler, where said liquid state refrigerant is accumulated by capillary action in at least a part of said evaporation section, and said accumulated liquid state refrigerant is evaporated by heat transferred from said external heat source; a gaseous state refrigerant transfer section being formed adjacent to said evaporation section, where said evaporated refrigerant is transferred towards said branching section; a condensation section being formed adjacent to the gaseous state refrigerant transfer section as at least a part of said branching section and dividing into at least two branches, where said gaseous state refrigerant is condensed into a liquid state; a liquid state refrigerant transfer section being formed adjacent to said condensation section as at least a part of said branching section and thermally insulated from said evaporation section, where said liquefied refrigerant is transferred towards said evaporation section; and a thermal insulation section for thermally insulating at least a part of said evaporation section from said liquid state refrigerant transfer section.