Void-Structured Sun Shield With S-Type Polarizer for Passive Heat Blocking
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Solution Overview
Problem
Existing sun protection products for outdoor electronic devices are inadequate as they either require power, are bulky, have poor sunlight reflection, or suffer from external reflection issues.
Innovation Solution
A sun protection device featuring a main body with a plurality of voids and an S-type polarizer, where the voids are designed to maintain or increase the incident angle of refracted light, enhancing reflection and reducing thermal energy transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a metal radiator is used for sun protection, then thermal insulation performance is improved, but the device becomes larger and heavier
Solution Approach 1:
The patent uses a main body with a plurality of voids (porous structure) to achieve thermal insulation without the weight and size of solid metal radiators. The voids scatter and reflect infrared radiation while maintaining a lightweight structure.
Solution Approach 2:
The patent combines a main body material with voids to create a composite structure that provides both mechanical strength and thermal insulation properties, avoiding the need for heavy solid materials.
2Weight of stationary object
If a non-metallic thermal insulation paper is used, then device weight is reduced, but sunlight reflection ability deteriorates
Solution Approach 1:
The porous structure with voids provides both weight reduction and improved sunlight reflection through multiple internal reflections and scattering effects, overcoming the limitations of conventional non-metallic insulation papers.
Solution Approach 2:
The voids create additional optical paths and reflection surfaces within the material structure, enhancing sunlight reflection ability without increasing weight by utilizing three-dimensional light scattering.
3Temperature
If a metal thermal insulation paper is used, then thermal insulation performance is improved, but external reflection issues occur
Solution Approach 1:
The porous structure with voids provides thermal insulation through infrared reflection while the multiple internal surfaces diffuse and scatter visible light, reducing external reflection issues compared to smooth metal surfaces.
Solution Approach 2:
The voids are distributed throughout the main body to provide localized reflection and scattering effects, achieving thermal insulation without creating the strong directional reflections characteristic of metal surfaces.
4Temperature
If a fan is used for cooling, then heat dissipation performance is improved, but the device requires power connection and produces noise
Solution Approach 1:
The sun protection device passively reflects and scatters sunlight through its void structure without requiring external power sources or active cooling components, achieving heat dissipation through self-service optical properties.
Solution Approach 2:
The patent replaces the mechanical fan-based active cooling system with a passive optical structure that uses refraction and reflection to achieve cooling without moving parts or power consumption.
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 device effectively reduces the transmission of thermal energy to electronic components, preventing overheating, while offering improved reflectivity without the drawbacks of existing products.
Implementation Method 1
when the first refracted light arrives at a surface of one of the voids facing the outer surface, a second reflected light is formed. The surface of the one of the voids facing the outer surface is configured to maintain or increase an incident angle of the first refracted light
Implementation Method 2
The S-type polarizer is adjacent to the inner surface of the main body
Data Source
AI summary
A sun protection device is provided, which includes a main body and an S-type polarizer. The main body has an outer surface and an inner surface opposite to each other, and the outer surface is configured to face sunlight, and the main body has a plurality of voids disposed inside the main body, on the inner surface of the main body or a combination thereof, in which when the sunlight irradiates the outer surface of the main body, a first reflected light and a first refracted light are formed, and the first refracted light enters the main body, and when the first refracted light arrives at a surface of one of the voids facing the outer surface, a second reflected light is formed. The S-type polarizer is adjacent to the inner surface of the main body.