The air-cooled heat radiator is a common heat dissipation device. It mainly consists of heat dissipation fins and a cooling fan. During operation, heat is first transferred to the heat dissipation fins, and then the cooling fan rotates to promote the rapid flow of air, which takes away the heat on the fins, thus realizing the heat dissipation of heat sources. It has the advantages of simple structure, low cost and convenient maintenance, and is widely used in the field of electronic equipment.