| 摘要 |
PROBLEM TO BE SOLVED: To ensure air-tightness and waterproofing of a back cover for a lamp body and reduce man-hour for fixing an electric power supply cord on the back cover. SOLUTION: An outer standing wall 702 is provided in such a manner of surrounding a cord insertion through hole 704 (704a, 704b) inserted electric power supply cords 6 (6a, 6b) supplying electric current to light source bulbs 1 (1a, 1b) through. Softened synthetic resin 9 is flowed in an inner area 705 of the outer standing wall 702 and is solidified. Air-tightness and waterproofing of the cord insertion through hole 704 (704a, 704b) is ensured by providing an inner standing wall 703 (703a, 703b) in the inner area 705. |
