Projection Device Shielding Structure for Heat Dissipation
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Solution Overview
Problem
Projection devices face challenges in effectively dissipating heat while maintaining aesthetic appeal and safety, as existing heat dissipation openings can reveal internal components and reduce efficiency due to small opening ratios or inadequate visual shading.
Innovation Solution
A casing structure with a shielding structure that shades the heat dissipation openings, preventing internal components from being seen and maintaining high heat dissipation efficiency by ensuring the shielding structure's dimensions effectively obscure the arrangement region from external view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If heat dissipation openings are formed on the casing with small opening ratio, then the appearance is improved and internal components are not visible, but the heat dissipation efficiency is reduced
Solution Approach 1:
The patent introduces a shielding structure that extends in a third dimension (depth into the casing interior) to block the view of internal components through heat dissipation openings. This allows the openings to maintain large surface area ratios for heat dissipation while the shielding structure prevents visual exposure of internal components, resolving the contradiction between appearance and heat dissipation efficiency.
2Shape
If heat dissipation openings are formed on the casing with inclined angle, then visual shading is provided in a specific view angle, but complete visual shading is not achieved
Solution Approach 1:
The patent divides the shielding function into multiple segments by positioning shielding structures at different locations and orientations within the casing. These segmented shielding elements work together to provide complete visual shading across all view angles while maintaining large heat dissipation opening areas, overcoming the limitation of single-angle shading solutions.
3Productivity
If heat dissipation openings are formed on the casing, then heat dissipation efficiency is improved, but inner structures and inner components can be seen through the openings
Solution Approach 1:
The shielding structure acts as an intermediary element positioned between the heat dissipation openings and the external environment. It allows thermal energy to pass through the openings while blocking visual access to internal components, thus mediating between the conflicting requirements of heat dissipation efficiency and aesthetic appearance.
Data Source
AI summary
The disclosure provides a projection device including a casing structure, a light source, a light valve element and a projection lens. The casing structure includes a main casing and at least one shielding structure. The main casing has an inner space and at least one heat dissipation opening, and the at least one shielding structure is connected to an inner surface of the main casing to be located in the inner space. The light source is disposed in an arrangement region of the inner space for providing an illumination beam. The light valve element is disposed in the arrangement region for converting the illumination beam into an image beam. The projection lens is disposed in the arrangement region for projecting the image beam. The shielding structure shades the at least one heat dissipation opening, such that the arrangement region is invisible from outside of the main casing.