Light-guiding system for the passenger compartment of a motor vehicle

The present invention relates to a light-guiding system for improving the lighting conditions of the passenger compartment of a motor vehicle, including a light-generating unit which can be switched on and off electrically and a light guide which is used for guiding the light and which is coupled to the light-generating unit for coupling in the light. According to the present invention, the light guide is arranged in the area of the interior lining of the vehicle roof and designed as a flat light guide, the light being coupled in at one or more lateral surfaces of the light guide; and the flat light guide being prepared such that the light couples out of the light guide into the passenger compartment of the vehicle over a large surface and in a homogeneous manner.