LED Lamp Substrate Heat Sink Integration
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Solution Overview
Problem
Existing LED lighting systems face challenges in efficiently dissipating heat while maintaining a compact form factor suitable for replacing traditional incandescent or fluorescent bulbs, which can lead to reduced performance and lifespan due to thermal management issues.
Innovation Solution
An LED lamp design featuring a thermally conductive substrate that is exposed to the ambient environment, allowing for effective heat dissipation while maintaining a compact form factor, where LEDs are mounted directly on the substrate which serves as both a support and heat sink, eliminating the need for a separate heat sink component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a separate heat sink component is used to cool LEDs, then heat dissipation efficiency is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent combines the substrate and heat sink into a single integrated component. The substrate serves dual functions: electrical support for mounting LEDs and thermal management through heat dissipation. This eliminates the need for a separate heat sink component, reducing device complexity while maintaining effective heat transfer from LEDs to ambient environment.
Solution Approach 2:
The substrate is designed to perform multiple functions simultaneously: providing electrical connections for LED operation and serving as a heat dissipation structure. This multi-functional design reduces the total number of components needed in the LED lighting system while achieving both electrical and thermal management goals.
2Temperature
If a separate heat sink component is used, then heat dissipation is improved, but ease of manufacture deteriorates
Solution Approach 1:
By merging the substrate and heat sink into one component, the manufacturing process is simplified from assembling multiple parts to producing a single integrated piece. This reduces assembly steps, potential alignment issues, and manufacturing complexity, making production more efficient and cost-effective.
3Temperature
If the substrate is exposed to the ambient environment, then heat dissipation is improved, but the form factor compatibility with standard bulbs may be compromised
Solution Approach 1:
The substrate is designed with three-dimensional features including protrusions that extend toward the bulb envelope and surface areas exposed to ambient air. This dimensional design allows heat dissipation to occur through multiple surfaces while maintaining compatibility with standard bulb form factors by utilizing the available internal space efficiently.
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 efficiency, prolongs the lifespan of the LEDs and power supply, and simplifies manufacturing by integrating the substrate as both a thermal conductor and structural component, allowing for a form factor compatible with standard bulb sizes.
Implementation Method 1
The substrate has a surface that is exposed to the exterior of the enclosure for transmitting heat from the plurality of LEDs and dissipating heat to the ambient environment
Data Source
AI summary
A LED lamp includes an optically transmissive enclosure and a base connected to the enclosure. LEDs are mounted on a substrate for emitting light when energized though an electrical path from the base. The mounting substrate for the LEDs has a surface that is exposed to the exterior of the enclosure for transmitting heat from the plurality of LEDs and dissipating heat to the ambient environment.