Vehicle headlamp having removable lighting control unit

In a headlamp (1) for a vehicle, a lighting control circuit unit (8) is provided in a lamp housing (2). The lighting control circuit unit (8) is fixed to a holder (6) with screws (13) and the holder (6) is fixed to a rear surface of a reflector (3) with screws (15). A discharge lamp bulb (4) is held on the reflector (3). The discharge lamp bulb (4) is directly connected to the lighting control circuit unit (8). The lighting control circuit unit (8) is removable through an opening (2b) of the lamp housing (2) in a state that the discharge lamp bulb (4) is held on the reflector (3). Also, the discharge lamp bulb (4) is exchangeable through the opening (2b).