Heat Pipe LED Light Assembly Thermal Management
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Solution Overview
Problem
High-intensity light applications, such as overhead store lights and street lights, face challenges in maintaining light-emitting diode (LED) longevity due to heat-related issues, leading to premature failure and inefficiencies in heat management.
Innovation Solution
A lighting assembly incorporating a heat pipe with a condenser and evaporator portion, thermally coupled to LEDs, and a heat sink housing to effectively manage heat, ensuring efficient heat dissipation and extending LED lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high power is used to generate high light output, then illumination intensity is improved, but heat generation increases causing premature LED failure
Solution Approach 1:
The patent extracts heat away from the LED light sources by introducing a heat pipe with evaporator and condenser portions. The evaporator absorbs heat from the LEDs and transports it to the condenser, effectively removing the harmful thermal energy from the light-emitting components to prevent premature failure
Solution Approach 2:
The heat pipe serves as an intermediary thermal management system between the LED light sources and the surrounding environment. It mediates heat transfer by phase change (evaporation at the evaporator, condensation at the condenser), efficiently transporting heat away from the LEDs without direct thermal contact
2Reliability
If heat is removed from around the light-emitting diode, then LED life and efficacy are improved, but device complexity increases due to additional heat management components
Solution Approach 1:
The patent merges multiple functions into the heat pipe structure: heat absorption at the evaporator, heat transport through phase change, and heat dissipation at the condenser. This integrated approach provides comprehensive thermal management while maintaining a compact design, avoiding the need for separate cooling components
3Use of energy by moving object
If compact fluorescent bulbs are used to reduce power consumption, then energy efficiency is improved, but environmental friendliness deteriorates due to harmful materials
Solution Approach 1:
The patent employs LED light sources that, while having higher initial cost, provide significantly longer operational life and better environmental credentials. The LEDs replace compact fluorescent bulbs, eliminating harmful materials like mercury while maintaining energy efficiency, making them a sustainable long-term solution
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 provides a cost-effective, long-lasting lighting solution for high-intensity applications by effectively managing heat, thereby enhancing LED longevity and maintaining high light output.
Implementation Method 1
a heat pipe with a condenser and evaporator portion, thermally coupled to LEDs
Implementation Method 2
heat pipe having a first condenser portion and a first evaporator portion
Implementation Method 3
first heat sink housing receives the first condenser portion of the heat pipe
Implementation Method 4
heat sink housing to effectively manage heat, ensuring efficient heat dissipation
Data Source
AI summary
A light assembly includes a heat pipe having a first condenser portion and a first evaporator portion. The heat pipe includes a longitudinally extending wall. A plurality of light sources are disposed at least partially around and thermally coupled to longitudinally extending wall at the first evaporator portion of the heat pipe. A first heat sink housing receives the first condenser portion of the heat pipe.