Abstract: A light emitting unit of one or more kinds selected from light sources such as, neon lamp, cold cathode fluorescent lamp, electro luminescence (EL), and light emitting diode (LED) accommodated in a protecting enclosure together with a rectifier circuit, is mounted on a rotating body of an automobile such as a wheel or a tire. Power for illumination is supplied from an extra miniature generator installed on the rotating body converting its rotating kinetic energy into electrical energy by means of a specially designed vane, an eccentric swing block, and a bearing disc with associated transmission gear wheel to continuously supply electricity to the light emitting unit. Both sides of the automobile are therefore well illuminated in a dark environment so as to achieve traffic security and contribute to beautiful night scenery.