Vehicle Headlamp LED Replacement Guide Rail Alignment
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Solution Overview
Problem
The precise alignment requirements for LED light sources in vehicle headlights make replacement of burned-out LEDs difficult, as existing methods require disassembly and handling of sensitive reflector parts, which is unfavorable and impractical for users.
Innovation Solution
A vehicle headlight design where the light source support has guide rails and a catch mechanism that allows the reflector part to be automatically re-aligned with the new LED positions without touching the reflector, using guide rails and an ejector to prevent damage to the circuit board, enabling tool-free replacement and re-reference of LEDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If reference marks are made on the light source support after LED placement to enable precise alignment, then manufacturing precision is improved, but device complexity increases due to the need for additional reference elements and alignment mechanisms
Solution Approach 1:
The light source support performs dual functions: it supports the LED modules and automatically serves as the alignment reference for reflector parts through its edge geometry. The edge of the light source support directly defines the reference position without requiring separate reference marks or elements, enabling self-alignment during assembly.
Solution Approach 2:
The invention extracts and eliminates unnecessary reference elements (such as separate reference marks or additional alignment features) from the light source support structure. By using the inherent edge of the support as the reference, the design removes redundant components while maintaining precise alignment capability.
2Illumination intensity
If reflector parts are made with sensitive reflective coatings to improve light efficiency, then illumination intensity is improved, but ease of operation deteriorates because the reflectors cannot be handled or manipulated during LED replacement
Solution Approach 1:
The headlight assembly is segmented into independently replaceable modules: the LED light source support can be replaced without the reflector parts. This separation allows users to replace only the LED module while the reflector remains in place, eliminating the need to handle sensitive reflective surfaces.
Solution Approach 2:
The light source support acts as an intermediary carrier that temporarily holds the LED modules during assembly and replacement. It provides a handling interface for users, eliminating direct contact with the sensitive reflector parts while enabling precise positioning through its edge-based reference system.
3Reliability
If precise alignment of LEDs with reflectors is required to meet legal light pattern requirements, then reliability is improved, but ease of repair deteriorates as replacement requires disassembly and specialized handling
Solution Approach 1:
The light source support automatically provides alignment functionality through its edge geometry, enabling users to achieve legally compliant light patterns during replacement without requiring specialized tools or expertise. The self-aligning edge reference system guides the reflector parts into correct positions during simple insertion movements.
Solution Approach 2:
The light source support is pre-configured with edge references that define the correct alignment position before the actual LED replacement operation. This preliminary preparation of the reference geometry ensures that when users install new LED modules, the alignment is automatically established, guaranteeing light pattern compliance without requiring post-installation adjustment.
Data Source
AI summary
In a vehicle headlight comprising a light module (1) with a light source support (3), with at least one light source (17) and a reflector part (5) associated with the at least one light source (17), it being possible for reference elements (24) on the reflector part (5) to be brought into an operative connection with corresponding reference elements (25) on the light source support (3), the light source support (3) can be pushed into a guide part (2) with guide rails (6) for the reflector part (5), and the reflector part (5) has a catch (22) associated with the light source support (3) to displace the reflector part (5) together with the light source support (3) along the guide rails (6), which are designed to bring the reference elements (24) on the reflector part (5) into an operative connection with the corresponding reference elements (25) on the light source support (3) when the light source support (3) is pushed in.