| 摘要 |
PURPOSE: A signal lamp having a triangle and rectangular and circular shape is provided to improve the discrimination of traffic light signals by differently configuring the shape of signal lamps or signal lamp windows according to traffic light signals. CONSTITUTION: Signal lamps have each a circular shape and are comprised of red, yellow, green, and an arrow. A reflection mirror(80) of each of the signal lamp has one of a triangle(50), a rectangular(60), and a circular shape(70). A frame of each signal lamp is made of one of aluminum, a steel, an alloy steel. The frame is further made of a composite material manufactured by a glass fiber or a carbon fiber. Also, the frame is made of a material in which the composite material is mixed with a metal. A light source of each signal lamp is one of a bulb and a LED(Light Emitting Diode).
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