Abstract: A lamp radiator, a lamp and a lamp assembly are provided. The lamp radiator includes a base and a number of radiating fins fixed on the base, wherein the base includes a mounting surface and a radiating surface opposite to the mounting surface, and the radiating fins are arranged on the radiating surface at intervals; the mounting surface includes a first mounting surface and a second mounting surface, an included angle is defined between the first mounting surface and the second mounting surface, and a direction of the included angle towards the radiating fins.

Abstract: A lamp, a lamp driver and a lamp lighting system are provided. The lamp includes a lamp housing and a plug connector fixed on the lamp housing, wherein the plug connector includes a plug insulator, a plug terminal group and at least one buckle, the plug insulator includes multiple plug side walls and a plug bottom wall, the multiple plug side walls enclose to form a docking chamber for docking with a socket connector of a lamp driver, the plug terminal group is mounted on the plug bottom wall and is exposed in the docking chamber; the buckle is connected with one plug side wall and forms a V-shaped structure with an outer surface of the plug side wall, and the buckle is configured to fix the plug connector in the socket connector.