Lamp with visible light response photocatalyst for air disinfection

The lamp comprises a horn frame, a rear cover and a front frame, the rear cover and the front frame are connected with each other, a power module and a power protection cover are arranged at the upper end of the rear cover, elastic pieces are arranged on the two sides of the rear cover, a fan is arranged on the inner wall of the upper end of the rear cover, and an annular photocatalyst filter element is arranged on the outer side of the fan. The front frame comprises an outer ring and an inner ring, the portion between the outer ring and the inner ring is divided into a plurality of air outlets through connecting plates, a hollow fixed rear cover is arranged on the inner wall of the inner ring, an annular lamp strip is arranged on the inner wall of the hollow fixed rear cover, and a diffusion plate, a light guide plate, reflection paper and a gasket are sequentially arranged at the upper end of the annular lamp strip. An air outlet is formed in the inner side of the lower end of the horn frame, and an air inl