Motor Vehicle Light Emission Module Cooling via Internal Fluid Flow
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Solution Overview
Problem
Light emission devices in motor vehicles face premature deterioration due to heat accumulation, which conventional cooling methods, such as cooling fins, do not adequately address.
Innovation Solution
A light emission module with a housing that includes a cooling module generating fluid flows to circulate inside and around the device, using masking elements to prevent heat and light from exiting through openings, and incorporating a fan to enhance heat dissipation, while maintaining light output quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling fins are provided on the light emission source, then heat dissipation is improved, but the heat accumulation problem inside the housing remains significant and the device complexity increases
Solution Approach 1:
The patent extracts the harmful light rays and heat from the internal space by providing openings in the housing that allow these elements to escape. The light emission source and module with mirrors are positioned such that light rays can exit through the openings, and heat is dissipated through the same openings, thereby reducing heat accumulation inside the housing without adding complex cooling structures
Solution Approach 2:
The housing openings serve multiple functions: they allow light rays to exit the device, enable heat dissipation from the internal space, and contribute to overall cooling without requiring separate dedicated structures. This multi-functional design reduces device complexity while maintaining effective heat management
2Illumination intensity
If openings are provided in the housing for light output, then light emission function is improved, but heat accumulates inside the housing causing premature deterioration
Solution Approach 1:
The patent converts the harmful effect of light rays (which carry energy and generate heat) into a beneficial cooling mechanism. By allowing light rays to exit through openings in the housing, the device not only fulfills its light emission function but also utilizes the outgoing light rays to carry away heat energy, thereby reducing heat accumulation inside the housing
3Illumination intensity
If the module with mirrors is positioned to reflect light away from the shaping optic, then light beam formation is improved, but heat accumulates on the housing walls causing deterioration
Solution Approach 1:
The patent extracts heat from the housing walls by providing openings that allow light rays reflected by the module with mirrors to exit. When the mirrors reflect light away from the shaping optic, the light rays strike the housing walls and are then directed outward through the openings, carrying heat energy away from the housing and preventing heat accumulation that would cause deterioration
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 reduces the temperature of the light emission device, dissipates heat, and prevents light from exiting through openings, thereby extending the device's lifespan and maintaining photometric performance without the need for additional external equipment.
Implementation Method 1
a cooling module configured to generate a flow of fluid circulating inside the inner space between the first and second openings in order to cool the light emission module
Implementation Method 2
a module with mirrors comprising a plurality of mirrors, each one moveable between a first position in which the corresponding mirror is disposed to reflect light rays reaching it from the light emission source towards the shaping optic, and a second position in which the corresponding mirror is disposed to reflect the light rays reaching it from the light emission source away from the shaping optic
Data Source
AI summary
Light emission module, comprising a housing having at least one first opening and a second opening, a shaping optic, a light emission source, a module with mirrors disposed to receive at least a part of the light rays emitted by the light emission source, and a plurality of mirrors. The light emission module furthermore includes a cooling module configured to generate a flow of fluid circulating inside the inner space between the first and second openings in order to cool the light emission module.