Fan structure of insecticidal lamp with dustproof function

The fan structure of the insecticidal lamp with the dustproof function comprises an axial flow fan and a dustproof seat, a rotating shaft is fixedly arranged in the middle of the inner top of the axial flow fan, the dustproof seat comprises a dustproof base, a dustproof inner cover and a fixing support, the dustproof base is in a circular ring shape, and the dustproof inner cover is arranged in the dustproof base. A dustproof inner cover located on the inner side of the axial flow fan is fixed to the upper side of the dustproof base, an opening in the lower side of the axial flow fan is jointly covered by the dustproof base and the dustproof inner cover, gaps exist between the axial flow fan and the dustproof base and between the axial flow fan and the dustproof inner cover, and the circumferential outer wall of the bottom of the dustproof base is fixedly sleeved with a fixing support. A through hole for the rotating shaft to penetrate through is formed in the top in the dustproof inner cover. Compared with t