Conventional projectors use washable nylon air filters. However, due to the poor dust collection effect of this type of filter, the illuminance of the projector will be affected in areas with poor air, which will cause the quality of the projector to drop, and cause damage to the fan of the projector. Serious impact. For the current mainland and other areas where PM2.5 and PM10 are more serious, Baisheng provides special filters for projectors. The use of a dust-proof net with high air volume and low pressure loss can greatly improve dust collection efficiency and heat transfer problems.