Vehicular Lamp Heat Dissipation via Segmented Housing
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Solution Overview
Problem
LED vehicle lamps face challenges in heat dissipation and lighting pattern control due to poor reflective housing design, leading to reduced efficiency and reliability at high temperatures.
Innovation Solution
A vehicular lamp design featuring an LED light module with a reflective housing and an outer housing made of heat-dissipating material, including fins and a heat conductive seat that enhances heat dissipation and assembling stability by using a light-transmitting cover and a circuit board for improved heat management and aesthetic appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional reflective housing is used, then the structure is simple, but the heat dissipation efficiency is poor
Solution Approach 1:
The housing is divided into two separate components: a reflective housing for light control and an outer housing for heat dissipation. This segmentation allows each component to be optimized for its specific function, resolving the contradiction between structural simplicity and heat dissipation efficiency.
Solution Approach 2:
The outer housing serves multiple functions: it provides structural support, facilitates heat dissipation through fins, and houses the circuit board. This multi-functionality improves heat dissipation without significantly complicating the overall structure.
2Device complexity
If most light beams directly transmit through the light-transmitting cover, then the structure is simple, but the lighting pattern control is difficult
Solution Approach 1:
The housing is segmented into reflective and outer components, allowing the reflective surface to be specifically designed for light pattern control while keeping the overall structure relatively simple.
3Illumination intensity
If the LED lamp operates at high temperature, then the lighting intensity may be maintained, but the crystalline grains could be damaged and service life reduced
Solution Approach 1:
The patent converts the harmful heat generated by LED operation into a manageable thermal flow by designing dedicated heat dissipation pathways through the outer housing and fins. This allows the LED to operate at high temperatures without damage, maintaining lighting intensity while extending service life.
Solution Approach 2:
The heat conductive seat acts as an intermediary between the LED light module and the outer housing, efficiently transferring heat away from the LED to prevent crystalline grain damage while maintaining operational temperature.
4Temperature
If a heat conductive seat and outer housing with fins are added, then the heat dissipation efficiency is improved, but the device complexity increases
Solution Approach 1:
The outer housing combines multiple functions into a single component: structural support, heat dissipation through integrated fins, and circuit board housing. This merging improves heat dissipation efficiency while minimizing the increase in device complexity.
Solution Approach 2:
The outer housing serves multiple functions simultaneously, providing structural support, heat dissipation, and circuit board accommodation, which justifies the increased complexity by delivering multiple benefits from a single component.
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 effectively controls lighting patterns and enhances heat dissipation, improving the reliability and longevity of LED vehicle lamps by efficiently managing heat generated by the LED module.
Implementation Method 1
Heat generated by the LED module is conducted by the heat conductive seat to the outer housing
Implementation Method 2
The reflective surface reflects the light beams to a predetermined position
Implementation Method 3
The outer housing includes a plurality of fins on an outer surface thereof
Data Source
AI summary
A vehicular lamp includes a reflective housing having a first recessed portion with a reflective surface. An outer housing made of heat dissipating material is fixed to the reflective housing and includes a plurality of fins on an outer surface thereof. The outer housing further includes a second recessed portion receiving the reflective housing. A receiving portion is provided behind the second recessed portion and receives a circuit board. A heat conductive seat made of heat dissipating material includes a connecting plate fixed to the outer housing. An extension extends from the connecting plate to a central, front portion of the reflective housing. The LED light module is mounted to the extension and electrically connected to the circuit board. A light-transmitting cover is mounted to and covers openings of the reflective housing and the outer housing.