LCD projector

A technology for projectors and liquid crystals, which is applied to equipment, optics, cooling/ventilation/heating transformation, etc. It can solve the problems of increased ventilation resistance, inability to blow out cooling air efficiently, and increased noise.
CN102466955AInactive Publication Date: 2012-05-23SANYO ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SANYO ELECTRIC CO LTD
Publication Date
2012-05-23
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

An LCD projector including liquid crystal light valves, a duct, and nozzles. Each liquid crystal light valve includes optical components. Cooling air flows through the duct to cool the optical components of each liquid crystal light valve. The nozzles are arranged in correspondence with the liquid crystal light valves (30B) and blow the cooling air from the duct toward the optical components of the corresponding liquid crystal light valves (30B). At least one nozzle (70B) includes an inlet (75), which is in communication with the duct (60), and an outlet (76), from which the cooling air from the inlet is blown out. The outlet has a width in a direction orthogonal to an optical axis of light that is set so that a blowing range of the cooling air is selected for each optical component in the corresponding liquid crystal light valve.
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Description

technical field

[0001] The invention relates to a liquid crystal projector, in particular to a cooling system for cooling a liquid crystal light valve with cooling air. Background technique

[0002] Conventionally, there is known a liquid crystal projector that magnifies and projects an image formed by a liquid crystal light valve on a screen through a projection lens. A representative product of this type of liquid crystal projector is a so-called three-panel liquid crystal projector that uses transmissive liquid crystal light valves for each color of red, green, and blue to display color images. Also, conventionally, various cooling systems for cooling optical components constituting a liquid crystal light valve have been proposed for such a three-plate liquid crystal projector, as disclosed in, for example, Patent Document 1, Patent Document 2, and Patent Document 3.

[0003] These cooling systems generally include a cooling fan for generating cooling air, a duct for sen...

Claims

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