Efficient heat dissipation type automobile diffuser transition shell

The utility model relates to the technical field of automobile accessories, in particular to an efficient heat dissipation type automobile diffuser transition shell. According to the technical scheme, the main shell comprises a main shell connecting base with the size of the left side smaller than that of the right side, two first combined fastening columns which are connected together and distributed front and back are arranged on the left side of the main shell connecting base, and a second combined fastening column is arranged on the right side of the main shell connecting base; a rectangular main body matching conveying hole is formed in the right side of the second combined fastening column, cylindrical scattered matching conveying holes are formed in the center of the left end face of the first combined fastening column, and the main body matching conveying hole and the two scattered matching conveying holes are subjected to transition forming in a spiral arc transition mode. The LED lamp has the advant