Projector dust-proof net clogging detection device and detection method

Abstract

The invention relates to a device and a method for detecting blockage of a projector dust screen. The device comprises a shell, a first temperature detecting element, a second temperature detecting element, a blocking layer and a dust screen, wherein an inner air passage and an outer air passage are formed in the shell; the outer air passage is communicated with the exterior of the shell through the dust screen; the outer air passage is provided with a first passage and a second passage; the outer air passage is communicated with the inner air passage through the first passage and the second passage respectively; wind wheels are arranged in the first passage; the blocking layer is arranged in the second passage; the first temperature detecting element is arranged on one side of the dust screen; and the second temperature detecting element is arranged on one side of the blocking layer and is positioned in the outer air passage. The temperatures of the dust screen and the blocking layer are detected, whether the dust screen is blocked is judged according to the temperature difference of the dust screen and the blocking layer, and the blockage of the dust screen is detected efficiently in real time by utilizing that the temperature of the blocking layer can change along with the blockage condition of the dust screen.

Description

technical field [0001] The invention relates to a projector, in particular to a detection device and a detection method for the clogging of the dust-proof net of the projector. Background technique [0002] With the progress of society and the continuous development of economy, projectors are used more and more frequently in various activities and meetings, and the requirements for projectors are getting higher and higher, such as its noise, clarity, contrast, and automatic adjustment of projection orientation etc. [0003] The projector can project a very bright image. It needs a bright light bulb to emit light when it is working. The light bulb will also generate a lot of heat while the light bulb is shining. The heat generated by the projector is mainly exhausted by the fan. One end of the projector inhales cold air, and then discharges hot air from the other end of the projector. The flowing air continuously takes heat out of the projector to prevent the components insi...

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a high-efficiency, low-energy-consumption, and timely feedback dust-proof net clogging detection device and detection device for the lack of an effective and timely dust-proof net clogging early warning mechanism for existing projectors. method

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