| 摘要 |
PURPOSE: A traffic signal lamp is provided to improve the concentration and safety of a user by displaying remaining time of a traffic signal. CONSTITUTION: A single rectangular integrated display lamp is provided by improving three division circular signal display system. A traffic signal remaining time is displayed. The color is changed to a yellow signal after a left turn and a straight signal. A RGB LED technology, a digital control technology, and information display technology using an LED are applied. |
