Illumination device for a vehicle

The device (16) has light sources (26) e.g. LEDs (27), emitting light, and a massive light body (30) made up of transparent material. A light entry surface (31) decouples part of the emitted light, and a boundary surface totally reflects a part of the emitted light. A light outlet surface (34) decouples the part of the totally reflected light, and an externally visible shape and external dimensions of the device is defined in a vehicle-mounted state by the shape and dimensions of the light body. The light body is designed as a disk with a convex-curved mantle surface. The light source is selected from a semiconductor light source e.g. LED and colored light source such as yellow, red or orange light.