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Projector and filter screen dust amount sensing device

A technology for detecting devices and projectors, which is applied in the field of projectors, and can solve problems such as danger, bulb overheating, and cooling air flow reduction

Inactive Publication Date: 2008-10-22
QISDA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When a normal projector cooling fan acts on a high-heat bulb, there must be a certain amount of air flow to take away the heat energy of the bulb; for some projectors, a filter is added to the air outlet of the bulb for safety reasons. Under normal operation, the amount of dust accumulated in the filter is enough to reduce the flow of cooling air, which will eventually cause the lamp to overheat and cause danger

Method used

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  • Projector and filter screen dust amount sensing device
  • Projector and filter screen dust amount sensing device
  • Projector and filter screen dust amount sensing device

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Embodiment Construction

[0019] Fig. 1 has shown projector 10 of the present invention, and it comprises a bulb 11, a fan 12, a filter screen 13, a filter screen dust amount detection device 14, a housing 15, and a controller 16, it should be understood that The projector 10 may further include components such as a circuit board 17 , a light pipe 18 , and a lens 19 . Since they are not relevant to the present invention, their detailed descriptions are omitted here.

[0020] The bulb 11 has a first housing 11a, and the first housing 11a has an air inlet 11b and an air outlet 11c. The fan 12 is arranged near the air inlet 11b of the bulb 11 to generate a wind flow F (such as Figure 2a shown) to dissipate heat from the bulb 11. refer to Figure 2a , the filter screen 13 is arranged at the air outlet 11c of the bulb 11 to filter the wind flow F flowing through the bulb 11 .

[0021] The filter screen dust detection device 14 is used to detect whether the wind flow F is normal, and is arranged behind the...

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Abstract

This invention relates to a projector and dust filter detecting device, wherein the projector comprises one bulb, one fan, one filter web and one filter dust detecting device. The bulb has one shell with one wind-in hole and one wind-out hole, wherein the fan is located on the wind-in hole to generate one wind flow to dissipate the bulb heat; the filter web is located on the wind-out hole to filter air flow of bulb. The detecting device is set behind the filter web to detecting whether the flow is normal, wherein the flow first passes the filter web and then the dust-detecting device.

Description

technical field [0001] The invention relates to a projector and a filter screen dust detection device, in particular to a projector capable of timely replacing the filter screen. Background technique [0002] When a normal projector cooling fan acts on a high-heat bulb, there must be a certain amount of air flow to take away the heat energy of the bulb; for some projectors, a filter is added to the air outlet of the bulb for safety reasons, and when used in a bad environment for a long time Under normal operation, the amount of dust accumulated in the filter is enough to reduce the flow of cooling air, which will eventually cause the bulb to overheat and cause danger. Contents of the invention [0003] In view of this, the object of the present invention is to provide a projector, which can replace the filter in time. [0004] Another object of the present invention is to provide a filter dust detection device, which can detect whether the filter dust is normal. [0005]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/14G01F1/28G03B21/00
Inventor 谢佳璋
Owner QISDA CORP