Electro-Optic Device Mounting Case with Elastic Panel Press
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Solution Overview
Problem
Existing electro-optic devices, such as liquid crystal projectors, face issues with cooling efficiency due to thick window sections that increase the stepped portion between the window and the electro-optic panel, leading to reduced airflow, dust accumulation, and degraded display quality.
Innovation Solution
An electro-optic device design featuring a mounting case with a frame, a first cover member, and a second cover member, where the second cover member has an elastic portion to press the electro-optic panel against the first cover member, allowing for a thinner window section and improved airflow, while preventing dust accumulation and enhancing heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the window section is increased, then the structural strength is improved, but the stepped portion between the window section and the electro-optic panel surface is increased, deteriorating the cooling efficiency
Solution Approach 1:
The patent divides the mounting case into multiple components: a frame, a plate-shaped member with the window section, and separate light-shielding plates. This segmentation allows the window section thickness to be optimized for cooling efficiency while the frame and light-shielding plates provide the necessary structural strength and light shielding functionality.
Solution Approach 2:
The patent applies different thickness characteristics to different parts of the mounting case. The window section is made thin to minimize the stepped portion and improve cooling airflow, while the frame and light-shielding plates maintain appropriate thickness for structural support and light blocking, respectively.
2Ease of manufacture
If the thickness of the window section is increased, then the manufacturing ease is improved, but the stepped portion is increased, causing dust or particles to gather in the effective picture area
Solution Approach 1:
By separating the window section from the light-shielding function into distinct components (plate-shaped member with window vs. separate light-shielding plates), the patent enables the window section to be manufactured with minimal thickness without compromising overall structural integrity, thereby reducing the stepped portion that would otherwise trap dust.
3Adaptability or versatility
If the electro-optic panel is spaced from the light-shielding plate to be disposed in the frame, then the adjustment flexibility is improved, but the stepped portion between the panel surface and window section is increased, reducing cooling efficiency
Solution Approach 1:
The patent optimizes the local thickness of the window section in the plate-shaped member to be minimal, which compensates for any spacing between the electro-optic panel and the light-shielding plate. This local optimization ensures that even when adjustment flexibility is utilized, the stepped portion remains minimized and cooling efficiency is maintained.
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 design enhances cooling efficiency, prevents dust accumulation, and improves display quality by ensuring effective contact between the electro-optic panel and the cover members, reducing the stepped portion and maintaining structural integrity.
Implementation Method 1
The second cover member has an elastic portion for pressing the electro-optic panel against the first cover member
Implementation Method 2
the electro-optic device is cooled by a cooling wind, for example, in order to prevent a considerable increase in the temperature due to strong projection light incident from a light source
Data Source
AI summary
An electro-optic device includes an electro-optic panel and a mounting case. The mounting case includes a frame, a first cover member and a second cover member. The second cover member has an elastic portion for pressing the electro-optic panel against the first cover member.