Porous LED Display Frame for Passive Heat Dissipation
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Solution Overview
Problem
Display apparatuses using LED modules face challenges with heat dissipation due to high heat generation, particularly in outdoor applications where external heat is introduced, and there is a need to reduce the weight of the frame for easier installation.
Innovation Solution
The display apparatus features a frame with a non-porous region for adhesion and a porous region with heat storage material, allowing for efficient heat dissipation through conduction and convection, and a cover member with outlets to direct heat outside, while reducing the frame's weight by incorporating multi-hole structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a solid frame structure is used to support the LED module, then structural strength is improved, but heat dissipation performance deteriorates and weight increases
Solution Approach 1:
The frame is constructed using porous material that contains multiple pores throughout its structure. These pores enable heat dissipation through convection and conduction while the material maintains sufficient structural strength to support the LED module. The porous structure provides heat dissipation pathways without requiring additional cooling components.
Solution Approach 2:
The frame employs composite material construction combining porous and non-porous regions. The porous regions facilitate heat dissipation while non-porous regions provide structural support and adhesion surfaces. This composite approach resolves the contradiction between strength and heat dissipation by distributing different functional requirements to different material regions.
2Strength
If a solid frame structure is used to support the LED module, then structural strength is improved, but weight increases
Solution Approach 1:
The porous frame structure reduces weight by removing material to create pores, while the remaining material is strategically distributed to maintain structural strength. The pores occupy space that would otherwise be filled with solid material, directly reducing weight while the pore walls and non-porous regions provide necessary support.
Solution Approach 2:
The frame is segmented into porous regions for weight reduction and heat dissipation, and non-porous regions for structural support and adhesion. This segmentation allows different portions of the frame to have optimized properties for their specific functions, achieving overall strength without requiring the entire frame to be solid.
3Temperature
If additional heat dissipation components like fans are added, then heat dissipation performance is improved, but device complexity increases
Solution Approach 1:
The porous frame structure provides self-service heat dissipation through its inherent porous architecture. Heat naturally dissipates through the pores via convection and conduction without requiring external power sources or control systems. The frame itself serves as the heat dissipation mechanism, eliminating the need for additional components like fans.
Solution Approach 2:
The heat dissipation function is extracted from separate components and integrated directly into the frame structure itself. The frame simultaneously provides structural support, heat dissipation, and weight reduction functions, eliminating the need for additional dedicated heat dissipation components and reducing overall device complexity.
4Temperature
If the frame surface is made porous to enhance heat dissipation, then heat dissipation performance is improved, but adhesion capability deteriorates
Solution Approach 1:
The frame exhibits local quality variation with porous regions in areas requiring heat dissipation and non-porous regions in areas requiring adhesion. The non-porous regions provide smooth surfaces for reliable bonding with LED modules and other components, while porous regions are positioned where heat dissipation is prioritized. This spatial differentiation resolves the contradiction between heat dissipation and adhesion.
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 design enhances heat dissipation performance without additional components like fans, reduces the overall weight of the display apparatus, and improves installation reliability by allowing easier wall mounting, especially in video-wall configurations.
Implementation Method 1
heat generated by the LED module may be dissipated to the outside of the display apparatus through the first region and the second region
Implementation Method 2
heat generated by the LED module may be dissipated to the plurality of outlets through the second region
Implementation Method 3
At least one portion of the second region includes a heat storage material. The plurality of pores disposed in the at least one portion of the second region are provided to be filled with the heat storage material
Data Source
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AI summary
The display device according to the present invention comprises: a printed circuit board on which a plurality of LEDs are mounted; a frame comprising a front surface for supporting the printed circuit board; and a cover member which covers the rear surface of the frame and comprises a plurality of outlets, wherein the frame comprises a first area extending from the front surface towards the rear surface, and a second area having pores and formed between the first area and the rear surface, and is provided to convect heat generated in the printed circuit board to the outlets via the first area and the pores.