Vehicle Lighting Device Dividing Wall Thermal Management
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Solution Overview
Problem
Conventional vehicle lighting devices face challenges in efficiently dissipating heat from light sources and heat-dissipating optical elements within a common housing, leading to increased cooling requirements and space needs for the optical elements due to disproportionate thermal power losses.
Innovation Solution
A dividing wall within the housing separates the space into distinct chambers, allowing for separate cooling elements for the light source unit and the heat-dissipating optical element, optimizing cooling efficiency and reducing the size of the cooling elements by maintaining lower temperatures in the chamber housing the optical element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single cooling element is used for both the light source unit and the heat-dissipating optical element, then the device complexity is reduced, but the heat dissipation effectiveness deteriorates due to thermal interference between the two components
Solution Approach 1:
The housing is divided into a first chamber for the light source unit and a second chamber for the heat-dissipating optical element using a dividing wall. This segmentation allows each component to have its own dedicated cooling element, eliminating thermal interference while maintaining manageable system complexity through modular design.
2Power
If the cooling element size is increased to handle the thermal power loss of the light source unit, then the heat dissipation capability is improved, but the installation space requirement increases
Solution Approach 1:
By separating the cooling functions into two independent chambers, each cooling element can be optimally sized for its specific thermal load. The cooling element for the optical element doesn't need to accommodate the entire thermal load of the light source, allowing for more compact dimensions while maintaining adequate heat dissipation capability.
Solution Approach 2:
Each chamber provides a localized thermal environment tailored to the specific cooling requirements of its component. The dividing wall creates distinct thermal zones, allowing the cooling elements to be dimensioned according to the actual heat generation in each localized area rather than requiring a single oversized cooling system.
3Power
If the thermal power loss of the light source unit is greater than the thermal power loss of the micromirror array, then the cooling requirement for the micromirror array is increased disproportionately, but this leads to increased installation space for the cooling element
Solution Approach 1:
The dividing wall creates separate thermal zones that prevent thermal coupling between the light source and the optical element. This segmentation allows the cooling element for the optical element to be sized according to its actual thermal load rather than being disproportionately enlarged to handle the combined thermal load of both components.
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 solution enhances heat dissipation effectiveness, extends the service life of the heat-dissipating optical elements, and reduces the overall size of the cooling components, ensuring efficient and space-saving cooling within the lighting device.
Implementation Method 1
a dividing wall separating the housing into a first chamber and into at least a second chamber is provided, wherein in the first chamber, the first cooling element associated with the light source unit, and in the second chamber, the second cooling element associated with the heat-dissipating optical element of the optical unit are arranged
Implementation Method 2
a cooling element for dissipating heat from the light source unit
Implementation Method 3
heat dissipation from the light source is made possible
Implementation Method 4
heat dissipation effectiveness
Data Source
AI summary
A lighting device for vehicles having a housing, in which a light source unit for emitting a light beam and an optical unit associated with the light source unit for generating a predetermined light distribution are disposed, with a cover plate closing an opening of the housing and with a cooling element for dissipating heat from the light source unit. The cooling element is associated with a heat-dissipating optical element of the optical unit. A dividing wall separating the housing into a first chamber and into at least a second chamber is provided, wherein in the first chamber, the first cooling element associated with the light source unit, and in the second chamber, the second cooling element associated with the heat-dissipating optical element of the optical unit are arranged.