| 摘要 |
PURPOSE:To raise the visibility of signals from a signal device regardless of environmental conditions. CONSTITUTION:A sign device 1 is made by burying luminous devices 10 having a red color lamp and a blue color lamp in the road of crossing point. When the blue color lamp of the signal equipment 2 is lit, blue color light is radiated from the indication device 1 toward the indication direction of the equipment 2, and red color light is radiated toward the direction crossing the indication direction. When the red color lamp of the equipment 2 is lit, red color light is radiated from the device 1 toward the indication direction of the equipment 2 and blue color light is radiated toward the direction crossing the indication direction. |
