Radiating fin structure of rectangular flying saucer lamp

The utility model relates to a flying saucer lamp, in particular to a radiating fin structure of a rectangular flying saucer lamp. The flying saucer lamp comprises a shell and cooling fins, the shell is rectangular, the cooling fins are evenly distributed on the back face of the shell, a U-shaped fixing strip is fixedly connected to the back face of the shell, a gap is reserved between the horizontal portion of the fixing strip and the back face of the shell, inserting holes are evenly distributed in the horizontal portion of the fixing strip, and the lower ends of the cooling fins are inserted into the inserting holes of the fixing strip. A supporting structure is arranged between every two adjacent heat dissipation fins, each supporting structure comprises a connecting piece, the connecting pieces are fixedly connected with bodies of the heat dissipation fins and are perpendicular to the bodies of the heat dissipation fins, the two ends of each connecting piece are provided with a concave part and a convex