| 摘要 |
PURPOSE:To improve workability of fitting of a ballast. CONSTITUTION:A projector frame is provided with a projector fitting base 3 supported by a strut 1 and on which a projector 2 is fit and a ballast fitting base 4 fit on the projector fitting base 3 and on which the ballast 5 is fit. This ballast fitting base 4 is formed by having a ballast fitting plate 4d provided with a hanger part 4g for hanging the upper leg 5a of the ballast 5 near an upper end and a slide fitting 4h for sandwiching the ballast fitting plate 4d and the lower leg 5b of the ballast 5 simultaneously and also slidable in the vertical direction. Thereby, the lower leg 5b is pinched and fixed together with the ballast fitting plate 4d by the slide fitting 4h by hanging the upper leg 5a of the ballast 5 to the hanger part 4g of the ballast fitting plate 4d of the ballast fitting base 4 assembled on the ground so as to hang the ballast 5 and bringing the lower leg 5b in contact with the ballast fitting plate 4d when fitting the ballast 5. Thereby, the ballast 5 can be fit easily and fitting workability of the ballast 5 can be improved. |
