Heat dissipation device of power supply box

The utility model discloses a power supply box heat dissipation device which is characterized in that the power supply box heat dissipation device comprises an interception net, a rotating sleeve, a rotating plate, a power line, a penetrating groove, a power supply box body, fixing sleeves, a rotating shaft, a knob and a bearing, the power line is arranged at one end of the power supply box body, and the fixing sleeves are arranged in the middles of the two sides of the power supply box body; the fixing sleeve extends in the length direction of the power supply box body, a plurality of through grooves are evenly formed in the fixing sleeve at equal intervals, the through grooves penetrate through the fixing sleeve and extend towards the upper portion and the lower portion of the power supply box body in a penetrating mode, and a rotatable rotating shaft is arranged in the fixing sleeve. Two bearings are arranged between the rotating shaft and the fixing sleeve and located at the two ends of the fixing sleeve