Modular Sealed LED Light Engine Thermal Management
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Solution Overview
Problem
Conventional LED lighting systems face challenges in maintaining robust operation in harsh environments, managing thermal issues, and achieving high efficiency and power quality, while also being environmentally friendly and cost-effective.
Innovation Solution
The development of sealed LED light engine modules (SLEMs) with integrated thermal management and electrical conditioning, which are assembled into a modular lighting system that includes a sealed light chamber resistant to contaminants, a translucent lens with optical diffusive material, and a parabolic reflector for efficient heat transfer, allowing for customizable light output and color temperature modulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional LED lighting systems are used, then basic illumination is achieved, but they fail to maintain robust operation in harsh environments due to lack of sealing and thermal management
Solution Approach 1:
The lighting system is divided into modular sealed light engine modules (SLEMs) that can be independently sealed and thermally managed. Each module contains its own sealed light chamber, allowing individual protection against contaminants and heat dissipation without affecting other modules.
Solution Approach 2:
A sealed light chamber enclosure acts as an intermediary barrier between the LED components and the harsh external environment. This sealed enclosure prevents contaminant ingress while maintaining internal thermal management pathways, protecting the LEDs from both environmental and thermal stressors.
2Reliability
If sealed light chambers are implemented to resist contaminants, then reliability in harsh environments improves, but manufacturing complexity increases
Solution Approach 1:
The sealing system is segmented into pre-fabricated sealed light engine modules with integrated light chambers. This modular approach allows sealing to be implemented once during module manufacturing, rather than requiring complex sealing assemblies during final product construction, reducing overall manufacturing complexity.
Solution Approach 2:
The sealing function is merged with the light chamber structure itself, creating an integrated sealed module. The light chamber serves dual purposes as both the structural housing and the sealed barrier, eliminating the need for separate sealing components and simplifying assembly.
3Adaptability or versatility
If multiple LED light engines are assembled into a modular system, then customization of light output and thermal management is achieved, but assembly complexity increases
Solution Approach 1:
The system uses segmented modular SLEMs that can be independently configured and assembled. Each module maintains standardized interfaces for electrical and thermal connections, allowing customization of the overall system configuration without requiring custom assembly procedures for each variant.
Solution Approach 2:
The modular SLEMs are designed with universal mounting interfaces and standardized electrical connections that work across different configurations. The same basic module design can be adapted to various applications by changing the number and arrangement of modules, reducing assembly complexity despite system customization.
4Illumination intensity
If conventional LED packages with transparent windows are used, then light output is achieved, but thermal management and protection from contaminants are insufficient
Solution Approach 1:
The light chamber enclosure merges multiple functions: it serves as the structural housing, the sealed barrier against contaminants, and the thermal management interface. This integration allows the enclosure to protect LEDs from contaminants while providing pathways for heat dissipation, and the transparent window maintains light output capability.
Solution Approach 2:
The sealed light chamber acts as an intermediary structure between the LED package and the external environment. It allows light to pass through the transparent window while blocking contaminant ingress, and provides a controlled internal environment for thermal management without compromising light output.
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 solution enables robust operation in diverse environments, extends service life to over 100,000 hours, achieves high luminous efficacy with low mercury content, and reduces labor and material costs while maintaining high power quality and efficiency.
Implementation Method 1
parabolic reflector for efficient heat transfer
Implementation Method 2
translucent lens with optical diffusive material
Implementation Method 3
illumination source disposed within the sealed light chamber
Data Source
AI summary
Apparatus and associated methods involve an assembly of multiple LED light engines in which a desired number of LED lamps are mounted to a plate that forms a wall of an enclosure. In an illustrative example, three LED light engines may be mounted to a plate that may be slidably installed as a wall of an extruded housing that contains electrical connections from an AC power inlet to each light engine. In various examples, the number and layout arrangement of the LED light engines may be custom selected for a particular application.