Vehicle Headlamp Control Plate for Passive LED Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional headlamp assemblies for motor vehicles face challenges in effectively managing heat generated by light emitting diodes (LEDs), leading to reduced light emitting efficiency and shorter LED lifespan due to high heat density, and existing solutions like electric fans and coolant systems increase the assembly's size and power consumption.
Innovation Solution
The headlamp assembly incorporates a control plate that crosses at a right angle to radiating fins, suppressing ambient air convection and enhancing heat exchange by promoting air flow through vibration, thereby improving heat radiating efficiency without increasing size or power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If electric fan or coolant system is used to cool the light emitting diodes, then heat radiating capability is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent extracts the harmful ambient air convection from the heat dissipation path by introducing a control plate that blocks and directs airflow. This eliminates the need for complex active cooling systems like electric fans or coolant pumps, resolving the contradiction between heat radiating capability and device complexity
Solution Approach 2:
The radiating member is designed to utilize natural air convection and vehicle movement-induced airflow for passive cooling. The control plate guides this natural airflow to enhance heat dissipation without requiring additional power-consuming components, achieving effective cooling through self-service mechanisms
2Temperature
If electric fan or coolant system is used to cool the light emitting diodes, then heat radiating capability is improved, but power consumption increases
Solution Approach 1:
The system utilizes passive heat dissipation through natural convection and airflow generated by vehicle movement. The control plate optimizes this passive airflow pattern, eliminating the need for power-consuming active cooling components while maintaining effective heat radiating capability
Solution Approach 2:
The patent removes the need for power-consuming cooling components by extracting and directing natural airflow through the control plate. This creates an energy-efficient cooling system that relies on environmental conditions rather than additional power input
3Volume of moving object
If light emitting diodes are closely arranged to decrease headlamp assembly size, then compactness is improved, but heat generation density increases
Solution Approach 1:
The control plate is strategically positioned to create localized optimized airflow patterns around the radiating member. This local airflow enhancement ensures efficient heat dissipation from the closely arranged LEDs, allowing compact configuration without compromising thermal management
Solution Approach 2:
The patent introduces a new spatial dimension for heat dissipation by using the control plate to create three-dimensional airflow patterns around the radiating member. This multi-dimensional airflow optimization enables effective cooling of densely packed LEDs within a compact volume
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 effectively enhances the heat radiating capability of the headlamp assembly, maintaining LED efficiency and extending its lifespan while maintaining a compact design and low power usage.
Implementation Method 1
The control plate has a size capable of suppressing convection of ambient air around the radiating fins
Implementation Method 2
a radiating member which is vertically placed in the light chamber and comprises a plurality of radiating fins for radiating heat energy generated by the light source
Data Source
AI summary
A vehicle headlamp assembly including a housing case and a lens cover forming a light chamber, a projection lens, a shade and a light source are arranged within the light chamber in that order along an optical axis of the headlamp assembly. A radiating member includes plate-shaped radiating fins vertically placed in the light chamber, for radiating heat energy generated by the light source to surrounding air. A plate is arranged at a right angle to the radiating fins in the light chamber, for controlling air-convection flow around the radiating fins.