Pedestrian detection device

The utility model discloses a pedestrian detection device. Including a body, the device further comprises a protection mechanism and a heat dissipation mechanism. Wherein the main body comprises a lens and an outer protective shell; the protection mechanism comprises a sunshade shell located on the outer side of the outer protection shell and a plurality of T-shaped clamping grooves in the outer surface of the outer protection shell. A plurality of T-shaped clamping blocks are fixedly connected to the inner side of the sunshade shell, fixing grooves are formed in the two sides of the inner sides of the T-shaped clamping blocks, expansion springs are installed on the inner sides of the fixing grooves, spherical protrusions are arranged at one ends of the expansion springs, and the T-shapedclamping grooves and the T-shaped clamping blocks are clamped with each other; by designing and installing the sun-shading shell located on the outer side of the outer protective shell and the like and adopting the split type