| 摘要 |
PROBLEM TO BE SOLVED: To prevent a bent state of decorative body caused by twisting of bosses by enabling one or more of reinforcing ribs provided for the bosses to engage with a wall surface inside of an engagement part for screwing the decorative body inserted into a hole part of a shade which covers a luminaire body and a lamp to a plurality of engagement arms disposed at specified interval, inside an engagement part at the outer circumfrential edge inside of the shade. SOLUTION: A decorative body 30 made of flexible synthetic resin to be fitted to a shade 13 is constructed with a decorative plate. Reinforcing ribs 34, fitted to bosses 33 having screw holes, extend perpendicular from an upper surface of the decorative plate to a lower part of an engagement arm 17. The width of the engagement rib 34a, constructing the reinforcing rib on the opposite side to an engaging wall surface 16a, is made to correspond to the length between the boss and the wall surface 16a to thereby improve the mechanical strength of the boss to the rotational direction of a screw 19. Accordingly, even if the screw 19 is turned strongly by a driver in fixing the boss 33 to the body 30 and the arm 17, no bending will occur in the boss 33, and another screw 19 can be easily screwed in the screw hole of another boss 33.
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