| 摘要 |
PURPOSE:To easily and quickly confirm desired area and destination by making a line shape light emitting means emit or flash light in a specific color. CONSTITUTION:The line shape light emitting means 3 emits or flashes the light sent from a light source 1 via a light transmission hose 2 in line shape from a station entry to a platform along the path of a station, etc., and four diffused light tubes 3A-3D are used at every line of each system. The diffused light tubes 3A-3D are formed with cores made of the same transparent material as that of the light transmission hose 2, and of transparent material with refractive index lower than that of the core. In the diffused light tube 3, the light sent from the light transmission tube 2 advances the core, and total reflection occurs on an inner peripheral surface, however, no total reflection of the light on another inner peripheral part occurs, and the light passes the inside of a clad, and it can be efficiently emitted from an outer peripheral surface to the outside. Also, the light is shielded by mounting an opaque casing on half periphral surface through which no light transmits out of the outer peripheral surfaces of the clad. |
