The invention discloses an auxiliary protecting device for an LED street lamp. The auxiliary protecting device comprises a protecting frame, a first fan, an electric push rod, a street
lamp shell, heat-dissipating fins, a strip
brush, a connecting rod, a spring, a connecting plate, a cleaning plate, a rod sleeve, a push rod, a fixing frame, a
cam, an output shaft, a motor, a second fan, a strip plate and bristles. According to the auxiliary protecting device for the LED street lamp, the structure is reasonable, the design is novel, gaps between the heat-dissipating fins can be effectively cleaned through the bristles on the strip plate, the phenomenon of dust accumulation of the gaps between the heat-dissipating fins is avoided, and thus the influence on the heat-dissipating effect of theheat-dissipating fins is avoided; through the first fan, flowing of air at the top of the heat-dissipating fins can be effectively accelerated, the air pressure in the gaps between the heat-dissipating fins can be reduced, and the phenomenon that dust in the air enters the gaps between the heat-dissipating fins can be reduced; through the second fan, the heat dissipating effect of the heat-dissipating fins can be effectively improved, and
LED lamp beads in the street
lamp shell are protected; and through the strip
brush, the bottom of the street
lamp shell can be effectively cleaned, and the situation that the bottom of the street lamp shell is stained with the dust and thus the lighting effect of the street lamp is influenced is avoided.