Device for fixing a lamp

The device has a reflector neck (5) that extends transversely to an optical axis of a reflector and is slidably fixed with a locking unit (8). A control unit (17) performs rotation of the lamp (1) in the reflector neck and translatory movement relative to the reflector neck that is displaced with locking region of the lamp. The locking unit is fixed on the reflector neck under interposition of an adapter. The control unit is formed integrally with locking unit. A holding unit (12) is formed integrally with the locking unit.