| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for preventing deformation of a printed circuit board provided in a lighting unit case. SOLUTION: A reinforcing plate 8 having an approximately the same size of a base plate 2-1 is disposed for contacting to the under face of the base plate 2-1 of the lighting unit case 2. At the center of the under face of the reinforce plate 8, hanging metal fitting 9 is fixed by a screw 1. Under the hanging metal fitting 9, there are supported a lamp holder 3, lamp 4, a reflectance shade 5, an under face cover 6 and the like. A printed circuit board 10 is mounted on a mounting part provided near the periphery of the upper surface of a base plate in the lighting unit case 2. The reinforce plate 8 is fixed at the fixing part provided near the periphery under the base plate of the lighting unit case 2 and a lighting is fixed at the center of the reinforcing plate 8 using the hanging metal fitting 9. |
