| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-priced spontaneous light emission delineator capable of appropriately performing visual guidance day and night and even in fog. SOLUTION: This spontaneous light emission delineator is formed of a fog detecting switch part 2 formed of an infrared ray projector 4 and an infrared ray receiver 5, and several delineator parts for intermittently emitting the light on the basis of the light emitting command signal from the fog detecting switch part 2. The infrared ray receiver 5 is provided with a filter 22 for shielding the scattered light. This scattered light shielding filter 22 is formed of a metal member and formed into a grid or a mesh shape. With this structure, the sun beam is blocked, and fog detection is stably performed day and night. The delineator part is formed by arranging light emitters, which are formed by diagonally arranging a LED and a Fresnel lens in the condition that focal points thereof are displaced a little from each other so that the only light intensity is amplified by converging, into a block. With this structure, optical veiling phenomenon is restricted to realize the effective visual guidance. |
