Vehicle Headlamp Segmented LED Modules for Adaptive Beam Control
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Solution Overview
Problem
Existing vehicle headlamps face challenges in securing stable visibility for drivers near the vehicle, particularly when encountering oncoming vehicles, due to changes in beam patterns and increased costs and weight from complex configurations, which also lead to design matching issues and interference with other devices.
Innovation Solution
A headlamp design featuring a fixed lower lamp module for close-range illumination and a rotatable upper lamp module with an adaptive drive beam and low beam module, allowing for various beam patterns without an independent high beam module, reducing the number of components and space requirements, and optimizing the beam pattern for oncoming vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a plurality of LED modules is configured to swivel as a whole, then the headlamp can adjust beam direction for adaptive lighting, but the beam pattern at close range changes causing unstable visual field
Solution Approach 1:
The headlamp is divided into multiple independent LED modules (first LED module, second LED module, third LED module, fourth LED module) that can be independently controlled. This segmentation allows the close-range modules to maintain fixed beam patterns while distant modules swivel for adaptive lighting, resolving the contradiction between adaptability and stability.
2Stability of the object's composition
If multiple LED modules are provided to prevent beam pattern changes, then close range visibility is maintained, but manufacturing costs increase
Solution Approach 1:
The patent implements a dynamic control system that selectively activates different LED modules based on driving conditions. The control unit determines whether to use close-range modules (for stability) or distant modules (for adaptability), optimizing performance while managing manufacturing complexity and cost.
3Strength
If a base plate with predetermined width is used to mount lamp modules, then structural support is provided, but large space is required in housing and costs increase
Solution Approach 1:
The patent integrates the mounting structure directly into the housing without requiring a separate base plate. The LED modules are mounted in a nested configuration within the housing space, eliminating the need for additional structural components and reducing overall volume requirements.
4Adaptability or versatility
If lamp modules rotate about a single rotating shaft, then swivel motion is achieved, but large radius of gyration requires greater housing opening
Solution Approach 1:
The patent divides the rotating assembly into multiple independent LED modules that can rotate independently or in coordinated groups. This segmentation reduces the radius of gyration for each module, allowing swivel capability while minimizing the housing opening required.
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 enhances driver visibility near the vehicle, reduces costs and weight, and minimizes interference with other devices by providing stable and adjustable beam patterns while maintaining high resolution and preventing light blindness to oncoming drivers.
Implementation Method 1
In a case in which LEDs (light emitting diodes) are used as a light source of the headlamp
Data Source
AI summary
A headlamp for a vehicle, includes: a lower lamp module configured to form a first beam pattern at a front close range region of the vehicle while being fixed; and an upper lamp module including an ADB (adaptive drive beam) lamp module and a low beam lamp module, which are rotatably installed at an upper portion of the lower lamp module, respectively, and configured to form a variable second beam pattern which is combined with the first beam pattern. Therefore, stable driving visibility may be secured at a region close to a driver, various beam patterns may be implemented, light blindness to a driver of an oncoming vehicle may be prevented, and thereby forward recognition of the driver and the opposite driver may be improved.