| 摘要 |
PURPOSE:To eliminate necessity for working for the whole area of a road surface, wall surface, etc., simplify the execution of works very much, shorten the construction term to possible minimum, and avoid blocking of a road etc. CONSTITUTION:An indication frame 5 is formed with the over-part left open, and the inside thereof is filled with epoxy resin 2a in which a photo-diffusive material is included, to form the body 3 of an indicator element, and a light emitting element 4 is embedded in this body 3. The body 3 is buried in a trench 10 of certain depth formed on the road surface, wall surface, etc., and its oversurface is made flush with the road surface. |
