Lighting and/or signalling device for an automobile including a surface light source

The device (10) has a fixing element (2) for fixing a surface light source (1), where a light emission of the surface light source is higher than 10 cm 2>. The surface light source includes an organic LED (OLED). A fastener includes a frame (3), where the frame surrounds partially or completely the surface light source. The frame is presented in a form that matches a circumference of the surface light source. The fastener is provided with a clipping element, a fastening element, a bonding element, a welding element, a screwing element and/or a heading element.