Electrooptic Module Ventilation Path Design
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Solution Overview
Problem
Existing electrooptic modules for projection-type display apparatuses face challenges in efficiently dissipating heat generated by liquid crystal panels, leading to reduced display quality and requiring complex, costly cooling systems with limited cooling effectiveness.
Innovation Solution
An electrooptic module design featuring a translucent plate overlapped on the image display region and a plate-like cover with engagement plate portions that form ventilation paths along the side end surfaces of the panel, allowing for efficient heat dissipation with a simpler configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cover at the side at which the liquid crystal panel is arranged is hollowed out to form a cooling air conducting portion, then cooling air can be supplied to the liquid crystal panel, but great effort is necessary to manufacture the cover resulting in the part being expensive
Solution Approach 1:
The invention divides the cooling function into separate components: a simple flat plate cover and a frame with integrated cooling air conducting portions. This segmentation allows the cover to remain simple and inexpensive to manufacture, while the frame provides the cooling functionality through its structure.
Solution Approach 2:
The cooling air conducting function is extracted from the cover and transferred to the frame structure. The frame's side surfaces are configured to form the cooling air conducting portions, separating the cooling function from the cover component and simplifying its manufacturing.
2Ease of manufacture
If the cover at the side at which the liquid crystal panel is arranged is hollowed out to form a cooling air conducting portion, then cooling air can be supplied, but the side end surface of the liquid crystal panel faces the cooling air conducting portion only resulting in low cooling effect
Solution Approach 1:
The invention extends the cooling air conducting portions from the frame to overlap with multiple side end surfaces of the liquid crystal panel, not just one. This multi-dimensional arrangement allows cooling air to reach broader areas of the panel, significantly improving cooling efficiency while maintaining structural simplicity.
Solution Approach 2:
The frame structure serves multiple functions: it provides structural support for the liquid crystal panel and simultaneously acts as the cooling air conducting portion through its side surfaces. This multi-functionality eliminates the need for separate complex cooling structures.
3Temperature
If a complex cooling system is used to improve heat dissipation, then cooling effectiveness increases, but device complexity and manufacturing cost increase
Solution Approach 1:
The frame structure performs dual functions as both the structural support and the cooling air conducting portion. This integration eliminates the need for separate complex cooling systems, achieving effective heat dissipation while maintaining device simplicity.
Solution Approach 2:
The frame structure provides its own cooling function through its side surfaces that form the cooling air conducting portions. The system uses its structural components themselves for cooling, eliminating the need for additional dedicated cooling mechanisms.
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
The module achieves high cooling efficiency by directing cooling air through the ventilation paths, reducing the temperature of the electrooptic panel and preventing air leakage, while maintaining image quality and reducing manufacturing costs.
Implementation Method 1
the plate-like cover constitutes a first ventilation path which extends along an extending direction of the first side end surface and is opened at both sides of the extending direction together with a side end surface of the translucent plate, a portion on which the electrooptic panel is exposed from the translucent plate at a side of the first side end surface, and the frame
Implementation Method 2
the cooling air receives heat generated on the electrooptic panel and releases the heat to the outside of the electrooptic module
Data Source
AI summary
A small-sized first translucent plate overlapped on an image display region and a plate-like cover are provided on a first substrate. Engagement plate portions of the plate-like cover are engaged with a frame so that the plate-like cover is bonded to the frame. The plate-like cover constitutes a ventilation path which extends along an extending direction of a side end surface of the first substrate and is opened at both sides of the extending direction together with a side end surface of the first translucent plate, an exposed portion of an electrooptic panel from the first translucent plate, and the frame.