US Patent 8231254 Lighting unit for vehicle headlights and vehicle headlight

A lighting unit for vehicle headlights comprising a light-emitting diode device (500), and a housing (200), in the interior of which are arranged components of an operating circuit for operating the light-emitting diode device (500), wherein the housing (200) is composed of electrically insulating material, electrical connections (222) for the voltage supply of the lighting unit are embedded in the housing (200), and the housing (200) has adjustment means (213a, 213b, 213c) for orienting the lighting unit in a vehicle headlight; wherein the light-emitting diode device (500) is arranged on a surface (112) of a heat sink (100) composed of thermally conductive material; and wherein the heat sink (100) forms a bearing surface (120a) for an external cooling system, said bearing surface being arranged at an outer side of the housing.