The present invention provides a lighting device for a medical treatment room. One embodiment incorporates a support frame configured to be mounted to a wall or ceiling of the medical treatment room. A first illumination unit on the support frame is configured to provide direct illumination of an operating area and a second illumination unit (on the support frame is configured to provide indirect illumination of the operating area. The support frame can be articulated for movement of the first and second illumination units. Movement of the support frame is adapted to activate and deactivate the first and second illumination units. Thus, the lighting device includes a control unit configured to switch the first and second illumination units on and/or off when the support frame is moved relative to the operating area.