Patent ID: 7738248

Claim:
An electronic device comprising: a housing; a heat generating part in the housing; and a heat pipe in the housing and sealing a fluid therein, wherein: the heat pipe further comprises: a heat receiving unit configured to deprive heat of the heat generating part by gasification of the fluid; a heat radiating unit configured to release the heat received by the heat receiving unit by liquefying of the fluid; a vapor flow path configured to couple the heat receiving unit and the heat radiating unit to each other and allows a gasified portion of the fluid to flow from the heat receiving unit towards the heat radiating unit; a liquid returning flow path provided at a position distant from the vapor flow path, which couples the heat receiving unit and the heat radiating unit to each other and allows a liquefied portion of the fluid to flow from the heat radiating unit towards the heat receiving unit; a wick configured to return the liquefied portion of the fluid from the heat radiating unit to the heat receiving unit; a pair of plate members containing the wick therebetween, and attached to each other to make the heat receiving unit, the heat radiating unit, the vapor flow path and the liquid returning flow path annular around the wick; and a frame unit provided on outer peripheries of the plate members, wherein: the wick comprises a main portion and a first projecting portion extending from the main portion, the first projecting portion projecting towards an inside of the heat receiving unit such as to divide the inside of the heat receiving unit into a first portion communicating to the vapor flow path and a second portion communicating to the liquid returning flow path, and the heat receiving unit is thermally connected to the heat generating part at a position across the first portion and the first projecting portion.