Concentric LED Lamp Heat Sink with Side Holes
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Solution Overview
Problem
Existing LED lamps face challenges in heat dissipation, particularly when multiple LED modules are incorporated, leading to reduced convection efficiency and increased size, as well as high development costs and low recycling rates due to varied heat sinks for different power levels.
Innovation Solution
The design features LED modules arranged in concentric circles with varying terminal lengths, side holes, and airways that communicate with each other, along with stepped surfaces and trenches, to enhance thermal convection and minimize size while maintaining high heat dissipation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LED modules are incorporated into the lamp, then the illumination intensity is improved, but the heat-dissipation efficiency is reduced due to crowded arrangement and blocked airflows
Solution Approach 1:
The patent transitions from a conventional planar arrangement of LED modules to a three-dimensional concentric circular arrangement. Inner circle modules are positioned closer to the plate while outer circle modules are positioned higher, creating vertical and radial separation. This dimensional change allows multiple modules to coexist without blocking each other's airways, maintaining heat-dissipation efficiency while increasing total illumination capacity.
Solution Approach 2:
The LED modules are divided into two distinct groups: inner circle modules and outer circle modules. Each group has different positioning characteristics relative to the plate, with inner modules having shorter distances to the plate and outer modules having longer distances. This segmentation allows each module type to have optimized airflow paths, preventing mutual interference while maximizing overall illumination.
2Ease of manufacture
If LED modules are arranged in conventional configurations, then the manufacturing simplicity is maintained, but the heat-dissipation performance deteriorates due to blocked airflows and reduced convection
Solution Approach 1:
The patent introduces vertical positioning differences between inner and outer circle modules, creating a three-dimensional heat-dissipation architecture. This dimensional approach maintains manufacturing simplicity by using standard mounting techniques while dramatically improving convection performance through optimized airflow paths that prevent blocking between modules.
Solution Approach 2:
The concentric circular arrangement creates a nested structure where inner circle modules are positioned centrally closer to the plate, and outer circle modules surround them at higher positions. This nesting allows each module to maintain its own heat-dissipation zone while contributing to the overall illumination, achieving both manufacturing simplicity and superior heat-dissipation performance.
3Loss of energy
If different heat sinks are designed for LED modules with various powers, then the heat-dissipation performance is optimized, but the device complexity and development costs increase
Solution Approach 1:
The patent employs a universal heat-dissipation architecture where all LED modules, regardless of their position in the concentric arrangement, utilize the same plate structure and airway design principles. The standardized module design with consistent airway configurations allows for simplified manufacturing and maintenance while achieving optimized heat-dissipation performance through the overall spatial arrangement rather than individual module customization.
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 configuration improves heat dissipation efficiency by allowing for better airflow and exposure of second terminals, reducing the overall size of the LED lamp while maintaining effective thermal convection and lowering production costs.
Implementation Method 1
Each of the LED modules comprises a heat sink body having a first terminal, a second terminal opposite to the first terminal, an airway having an opening at the second terminal, and at least one side hole on the side surface of the body, the at least one side hole communicates with the airway
Data Source
AI summary
A LED lamp includes LED modules. Each of the LED modules includes a heat sink body having a first terminal, a second terminal opposite to the first terminal, an airway having an opening at the second terminal, and a side hole on the side surface of the body. The side hole communicates with the corresponding airway. The LED modules are aligned to form concentric circles including an inner circle and an outer circle. The length between the first and the second terminals of each LED module at the inner circle is longer than that at the outer circle. Accordingly, heat generated by LEDs on the first terminals can be dissipated through the airways and the heat sink bodies.