Patent ID: 7709979

Claim:
A cooling device comprising: a heat pipe ( 6 , 60 , 61 , 62 ) including evaporation ( 7 ) and condensation ( 8 ) parts situated respectively in a hot zone and a cold zone; the heat pipe being intended to discharge the heat from the hot zone to the cold zone; the heat pipe further comprising an electrically insulating part ( 15 ) disposed between the evaporation ( 7 ) and condensation ( 8 ) parts thereof so as to electrically insulate the hot and cold zones from each other; the evaporation part ( 7 ) of the heat pipe ( 6 , 60 , 61 ) being connected to a voltage regulator ( 2 ) of a rotary electrical machine; the condensation part ( 8 ) of the heat pipe ( 63 ) with the electrically insulating part ( 15 ) being connected to one of front and rear bearing housings of a casing of the rotary electrical machine, the rotary electrical machine being one of an alternator and an alternator-starter.