Two-Part Extruded LED Heat Sink Design
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Solution Overview
Problem
Existing heat sinks for LED light sources are complex and costly to produce, with high manufacturing efforts and weights, which complicates effective heat dissipation.
Innovation Solution
A heat sink designed in two parts, comprising a ring-like outer body and a central solid body, where the central body forms a flat support surface with a cylindrical projection inserted into the outer body, allowing for full-area contact and efficient heat transfer, and can be produced using the extrusion process for reduced costs and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a die-cast aluminum body is used as a heat sink, then good thermal conductivity and heat dissipation are achieved, but manufacturing complexity and production costs increase
Solution Approach 1:
The heat sink is divided into two separate components: an outer body and a central body. The outer body is produced by extrusion process, while the central body is a separate element that is inserted into the outer body. This segmentation allows each part to be manufactured using simpler, more cost-effective processes while maintaining the overall thermal performance of the heat sink structure.
2Temperature
If a die-cast aluminum body is used as a heat sink, then effective heat dissipation is achieved, but production costs increase
Solution Approach 1:
The heat sink is divided into two separate components: an outer body and a central body. The outer body is produced by extrusion process, while the central body is a separate element that is inserted into the outer body. This segmentation allows each part to be manufactured using simpler, more cost-effective processes while maintaining the overall thermal performance of the heat sink structure.
Solution Approach 2:
The manufacturing method is changed from die-casting to extrusion process for the outer body. This parameter change in the manufacturing process enables lower production costs while maintaining the structural integrity and thermal conductivity required for effective heat dissipation.
3Temperature
If a die-cast aluminum body is used as a heat sink, then good thermal performance is achieved, but weight increases
Solution Approach 1:
The heat sink is divided into two separate components: an outer body and a central body. The outer body is produced by extrusion process, while the central body is a separate element that is inserted into the outer body. This segmentation allows for optimized material distribution and reduced overall weight while maintaining thermal performance through strategic placement of thermal conductive materials.
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 two-part design simplifies and reduces the manufacturing costs of the heat sink while maintaining effective heat dissipation properties, optimizing the thermal coupling between the LED light source and the heat sink.
Implementation Method 1
the central body has means for fastening the light source... the cylindrical projection being inserted into the opening of the outer body and the plate forming a flat bottom surface of the depression
Implementation Method 2
The heat loss that occurs during operation of LEDs is relatively high and also concentrated in a small area, so that measures must be taken to dissipate the heat quickly and effectively
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
The invention relates to an elevator system (1) comprising an elevator car (10), elevator doors (15), a drive (20), an elevator control system (30), and a counterweight (13) which can be moved in the opposite direction to the elevator car (10). The elevator control system (30) comprises a door control module (31) or can be connected to a door control module (31), which predefines a standard time for holding the doors open or an extended time for holding the doors open, depending on the load situation of the elevator car (10).