Dustproof filtering structure for projectors and projector with same

Abstract

The invention discloses a dustproof filtering structure comprising an outer filtering net which is of a stereoscopic shape, an outer filtering net bracket which is of a stereoscopic shape, is used for fixing the outer filtering net and is provided with an air inlet, an inner filtering net which is of a planar shape and is close to an air inlet of a projector, and an inner filtering net bracket which is assembled together with the outer filtering net bracket and is connected with a projector shell. The dustproof structure of the invention is stereoscopic. When air flow passes through the air inlet and the stereoscopic filtering nets, dust, impurities and other particles in the air flow cannot accumulate on the filtering nets, so that the possibility that filtering holes are blocked and the blocked area of the filtering holes are reduced, air can smoothly pass through the inner filtering net, and much less dust is filtered by the inner filtering net. Therefore, the dustproof effect is enhanced, the service life of the filtering nets is prolonged, the workload of filtering net replacing and cleaning is reduced, and various electronic elements and optical elements of projectors are protected.

Description

technical field [0001] The invention relates to a projection device, and specifically belongs to a dust-proof filter structure of a projector and a projector with the structure. Background technique [0002] At present, whether it is a liquid crystal display (referred to as LCD) projector or a digital light processing (referred to as DLP) projector, based on the principle of projector imaging, the inside of the projector must be kept well ventilated at all times when it is working, and at the same time, it is not necessary for the user to use it. The environment has relatively high requirements, especially the internal optical components, which are easily affected by particles such as dust and impurities in the air, resulting in poor imaging results. When the projector cools the fuselage with an air flow rate of tens of liters per minute, particles such as dust and impurities enter the interior of the projector together with the circulating air. If these particles accumulate...

AI Technical Summary

Problems solved by technology

During use, affected by the wind force and gravity of the air inlet, particles such as dust and impurities are easy to accumulate at certain fixed positions on the surface of the filter screen. If the accumulation is not cleaned for a long time, the dustproof effect will be reduced, and frequent Removing and assembling the filter to remove dust will speed up the service life of the dust-proof filter and increase the workload of disassembly and assembly. Therefore, the dust-proof device currently used in the projector has a poor filtering effect and requires frequent cleaning and maintenance. Urgent improvement

Images