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In the car, we depend on the traffic light to move. Sometimes because the problem of angle, let the drivers cant get the message, the wide traffic light enlarge the angle of Visibility. No matter what the position you stand, you can get the message easily. It also can decrease the number of traffic light. At the institutional level, we all use LED, Shell coated with fluorescent powde to solve the problem about view angle of LED is too small. Finally, it can decrease Energy consumption.
Tatung University
Taipei City, Taiwan
Tatung University
Taipei City, Taiwan
JIAN LUN / SUN