| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a traffic signal light device with simple structure, which can prevent snow from sticking thereon by making a snow accretion prevention plate incline forward, can prevent dust from penetrating a gap between the snow accretion prevention plate and a surface of a display, and can be seen clearly. <P>SOLUTION: An LED unit 11 is made to incline forward. In front of the LED unit, a transparent snow accretion prevention plate 12 formed of poly-carbonate with snow accretion-resistance, having characteristics of light diffusion (anti reflection effect), and is overlapped and arranged with forward tilting so as to be in close contact with front of the LED unit. A light-emitting shape of the LED unit 11 is formed in a vertically-long elliptical shape so as to be seen as a circular shape, when viewed from a distant place in a horizontal direction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
