Patent ID: 7768164

Claim:
A cooling device comprising: a heat pipe including evaporation and condensation 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 evaporation part of the heat pipe being connected to a voltage regulator of a rotary electrical machine, such as an alternator or an alternator starter; the rotary electrical machine comprising a casing provided with a front bearing housing and a rear bearing housing; the condensation part of the heat pipe being connected to one of the front and rear bearing housings constituting a cold source; the voltage regulator mounted to one of the front bearing housing and the rear bearing housing external to the rotary electrical machine; one of the front bearing housing and the rear bearing housing carrying at least one current rectification device and comprising a heat dissipator carrying rectifying elements of the at least one current rectification device; and the condensation part of the heat pipe being in contact with the heat dissipator.