A lighting device for a motor vehicle. The device comprises a wall comprising at least one protuberance and at least one first light source situated inside the protuberance. The wall comprises a reflecting zone having light reflection properties, and formed facing the first light source, such that the first light source is able to generate a light beam passing through the wall, that is propagated outside the lighting device before being reflected on the reflecting zone of the wall to generate an apparent lighting from the wall.