| 摘要 |
PURPOSE: The bidirectional light emitting diode(LED) signal lamp of a cross-walk is provided to display a walking signal regardless of damage of a separate LED element by locating the LED on the lateral side of light diffusion plate. CONSTITUTION: A groove is formed along the outer lateral side of a light diffusion plate(100). An LED is inserted in the groove. The light diffusion plate absorbs light from the LED and emits the light to a front direction and a rear direction. A plurality of LED elements is arranged on a printed circuit board. A heat emitting plate is arranged to be contacted with the external side of the light diffusion plate. A case(400) protects the light diffusion plate the light diffusion plate and the LED. |
