Projector Cooling Segmentation for Dust and Thermal Control
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Solution Overview
Problem
Existing projectors face challenges in maintaining appropriate temperatures for cooling objects in dusty environments, leading to potential dust adherence and image deterioration, and face size and control issues with single circulatory cooling devices for multiple cooling objects.
Innovation Solution
A projector design with separate circulatory cooling devices for distinct cooling objects, each within a closed housing, allowing for independent temperature control and downsizing of the cooling systems, using a division wall constituted by optical components to reduce parts and enhance arrangement freedom.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple cooling objects are cooled by a single circulatory cooling device, then the device structure is simplified, but the device size increases and temperature control precision deteriorates
Solution Approach 1:
The patent divides the cooling system into multiple independent circulatory cooling devices, each responsible for a specific cooling object. The first circulatory cooling device cools the light modulation device, while the second circulatory cooling device cools the polarization conversion element. This segmentation allows each cooling device to be compact and enables precise temperature control for each optical component, resolving the contradiction between structural simplicity and device size.
2Object-affected harmful factors
If multiple cooling objects are kept in a closed housing, then dust adhesion is prevented, but the device size increases due to heat absorber requirements
Solution Approach 1:
The patent creates separate closed housings for different cooling objects - a first closed housing for the light modulation device and a second closed housing for the polarization conversion element. Each housing is independently sealed to prevent dust adhesion, eliminating the need for a large unified closed housing with extensive heat absorption capabilities. This segmentation reduces overall device size while maintaining protection against dust.
3Device complexity
If a single circulatory cooling device is used for distant cooling objects, then the cooling system is simplified, but the device size grows and arrangement flexibility is reduced
Solution Approach 1:
By dividing the cooling system into multiple independent circulatory cooling devices, each device can be positioned close to its corresponding cooling object regardless of the object's location within the projector. This enables flexible arrangement of optical components without being constrained by a single centralized cooling system, thereby enhancing adaptability and arrangement freedom.
4Device complexity
If cooling objects are cooled by a single circulatory cooling device, then the system is simplified, but temperature control precision for each object deteriorates
Solution Approach 1:
The patent implements separate circulatory cooling devices for different cooling objects, allowing independent temperature control of the light modulation device and polarization conversion element. Each cooling device can be optimized for its specific thermal requirements, enabling precise temperature control for each optical component while maintaining a relatively simple overall system structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively cools and controls the temperature of image forming sections and optical components, reduces the size of the cooling devices, and enhances the projector's miniaturization and arrangement flexibility.
Implementation Method 1
a first circulatory cooling device having a first closed housing, and adapted to circulate a first cooling gas in the first closed housing to cool the first cooling object disposed in the first closed housing
Implementation Method 2
a second circulatory cooling device having a second closed housing, and adapted to circulate a second cooling gas in the second closed housing to cool the second cooling object disposed in the second closed housing
Data Source
AI summary
A projector includes a first cooling object and a second cooling object, a first circulatory cooling device having a first closed housing, and adapted to circulate a first cooling gas in the first closed housing to cool the first cooling object disposed in the first closed housing, and a second circulatory cooling device having a second closed housing, and adapted to circulate a second cooling gas in the second closed housing to cool the second cooling object disposed in the second closed housing, the first cooling object is an image forming section including a light modulation device adapted to modulate light entering the light modulation device to form an image, and the second cooling object is a first optical component included in an optical component making a contribution to the formation of the image by the light modulation device.