Vehicle Headlight Lighting Device with Adjustable Light Source Carrier
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Solution Overview
Problem
The existing lighting devices for motor vehicle headlights face challenges in reliably adjusting LED light sources and reflectors during the fastening process, leading to potential misalignment and non-compliance with legal light distribution requirements due to warping or unintended displacement of reflectors.
Innovation Solution
A lighting device design featuring a solid reflector carrier with a slidably mounted light source carrier, utilizing guide grooves and pins for precise vertical adjustment, ensuring stable positioning and optimal heat dissipation, and allowing separate control of LED light sources for different reflectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the reflector is fixed to the substrate using screws during assembly, then the reflector can be securely mounted, but the reflector may become distorted or unintentionally displaced from its optimal position
Solution Approach 1:
The mounting system is segmented into three independent components: the substrate with mounting holes, the reflector with mounting protrusions, and the light source carrier with adjustment capability. This segmentation allows the reflector to be mounted securely to the substrate without direct screw fastening that could cause distortion, while the light source carrier provides independent positioning and adjustment functionality.
Solution Approach 2:
The light source carrier acts as an intermediary between the light source and the reflector positioning system. It mediates the positioning function, allowing precise adjustment of the light source relative to the reflector without applying mounting forces directly to the reflector, thereby preventing distortion while maintaining positioning accuracy.
2Stability of the object's composition
If the light source and reflector are rigidly fixed together, then positioning stability is improved, but adjustment capability and heat dissipation efficiency are reduced
Solution Approach 1:
The light source carrier is designed with dynamic adjustment capability, allowing it to be positioned at different locations relative to the reflector during assembly and operation. This dynamic feature enables optimization of both positioning stability and adjustment capability, as the carrier can be securely fixed once positioned while maintaining the flexibility to adjust during the mounting process.
Solution Approach 2:
The rigid connection is segmented into two stages: the reflector is rigidly fixed to the substrate, while the light source carrier provides a adjustable connection between the light source and the reflector positioning system. This segmentation allows stability where needed (reflector mounting) while preserving adjustability (light source positioning).
3Reliability
If multiple mounting components are used to secure the reflector and light source, then mounting reliability is improved, but device complexity and space requirements increase
Solution Approach 1:
The mounting function and the positioning/adjustment function are merged into a single integrated system. The light source carrier simultaneously serves as both the mounting component (providing secure attachment to the substrate) and the positioning mechanism (allowing adjustment relative to the reflector), eliminating the need for separate mounting brackets, adjustment mechanisms, and alignment tools.
Solution Approach 2:
The light source carrier is designed as a multi-functional component that combines mounting, positioning, adjustment, and heat dissipation functions. This universal component replaces multiple specialized parts, reducing overall device complexity while maintaining mounting reliability through its integrated design.
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 design enables reliable, space-saving, and precise adjustment of light sources and reflectors, ensuring compliance with legal light distributions and maintaining image quality by reducing unwanted positioning options and allowing for independent control of LED light sources.
Implementation Method 1
light from the at least one light source is emitted via the reflector to form a light distribution or part of a light distribution into an area in front of the lighting device
Implementation Method 2
The LED light source(s) sits/are mounted on a substrate, usually a heat sink
Data Source
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AI summary
The invention relates to a lighting device (1) for a motor vehicle headlight. The lighting device (1) has at least one reflector (10, 11, 12, 13), and at least one light source (20, 21, 22, 23) is paired with the at least one reflector (10, 11, 12, 13). Light from the at least one light source (20, 21, 22, 23) is radiated into a region in front of the lighting device (1) by means of the reflector (10, 11, 12, 13) in order to form a light distribution or a part of a light distribution. The lighting device (1) has at least one, preferably precisely one reflector support (30), and the at least one reflector (10, 11, 12, 13) is attached to the at least one reflector support (30) in a fixed manner. The at least one light source (20, 21, 22, 23) is arranged on at least one light source support (40, 41, 42, 43), and the at least one light source support (40, 41, 42, 43) is movably mounted on the reflector support (30) and can be fixed in a defined position relative to the reflector support (30).