Sweeping device for underground lamp

The invention discloses a sweeping device for an underground lamp. The sweeping device comprises a cylinder, wherein a first fixing plate is fixedly connected to the interior of the cylinder, a secondcover body is fixedly connected to the top face of the cylinder, a second fixing plate is fixedly connected to the interior of the second cover body, and a motor is fixedly connected to the top faceof the second fixing plate. When the sweeping device is in use, through running of the motor, the output end drives a rotary shaft to rotate, then a hairbrush is utilized for sweeping dust on the underground lamp, and the first fixing plate can prevent the dust generated during sweeping from flying upward; and in the rotary process of the rotary shaft, a cam is driven to intermittently beat a stopdog under the effect of a spring, then a slide block is driven to slide in a box body, and the dust generated through sweeping is sucked into a dust settling box through a dust inlet pipe, and is stopped by a filtering net to