Dustproof heat dissipation network hard disk video recorder

The utility model provides a dustproof heat dissipation network hard disk video recorder, which comprises a video recorder body, a dustproof heat dissipation device is installed on the video recorder body, the dustproof heat dissipation device comprises a rectangular heat dissipation hole arranged on the video recorder body, a heat dissipation fan is installed in the rectangular heat dissipation hole, and installation boxes are oppositely arranged on two sides of an opening of the rectangular heat dissipation hole. Rotating shafts are rotatably mounted in the two mounting boxes, a dustproof filter screen is wound on one rotating shaft, the dustproof filter screen is connected to the other rotating shaft, and through holes for the dustproof filter screen to pass through are formed in the mounting boxes and the rectangular heat dissipation holes; by the adoption of the technical scheme, when the dustproof filter screen needs to be replaced, the rotating shaft can be rotated, the part, located in the rectangular