| 摘要 |
PROBLEM TO BE SOLVED: To simply and quickly carry out cleaning work, by equipping a cover for sealedly or roughly convering a tunnel luminaire and having a transparent part in a region in accordance with an irradiated part, and a transparent film detachably provided contacting the cover surface. SOLUTION: A tunnel lighting dustguard cover is equipped with a transparent film 3 detachably provided contacting a cover 2 surface, and the transparent film 3 is e.g. a polyester film overlappedly stuck by three films, and is stuck to the region B of the cover 2 surface. The overlappedly stuck transparent film 3 can be simply peeled off sequentially at each layer, by grasping a gripping part. Consequently, soil can be simply removed from the region B, by peeling off one of the overlappedly stuck films 3 even in the case where a tunnel luminaire is exposed to an exhaust gas, etc., for a long time, and the soil adheres to the surface of the transparent film 3. |
