The device (10) has a light source i.e. LED, directly or indirectly connected to a good thermal conductor i.e. thermally conductive metal rod. The conductor has an end region remotely located from the source, and is thermally conductively connected to cooling ribs of a heat sink. A cooling air duct extends between a printed circuit board, the conductor and the heat sink. A fan is arranged at an end of the heat sink that is remote from the light source. The conductor is made of copper, and the heat sink is made of aluminum or an aluminum alloy.
