Curved Light Emission Module for Motor Vehicle Regulatory Compliance
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Solution Overview
Problem
Existing light emission devices for motor vehicles with curved profiles face challenges in achieving a spatial distribution of light intensity that meets regulatory requirements, often resulting in complexity and compactness issues due to the need for a staircase arrangement of planar substrates and numerous connecting elements, which can lead to masking of electroluminescent elements.
Innovation Solution
A light emission module with a curved substrate and planar tabs, where electroluminescent elements are arranged on these tabs, and a control assembly regulates electrical energy to achieve different maximum light intensities along the substrate's longitudinal direction, ensuring light intensity meets regulatory standards while maintaining a homogeneous appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a staircase arrangement of planar substrates is used to achieve curved profile, then the device can fit curved bodywork, but the occupied volume increases and device complexity increases
Solution Approach 1:
The substrate itself is formed with a curved profile matching the bodywork contour, eliminating the need for multiple planar plates in staircase arrangement. This single curved substrate maintains compact dimensions while achieving the required curved shape for aesthetic integration with vehicle bodywork.
Solution Approach 2:
Multiple functions are integrated into a single substrate structure: the curved substrate serves as both the mounting surface for electroluminescent elements and the structural component defining the curved profile. This consolidation eliminates numerous connecting and fixing elements between multiple plates, reducing overall device complexity and occupied volume.
2Shape
If multiple planar plates are used to achieve curved profile, then the device can fit curved bodywork, but the number of connecting and fixing elements increases
Solution Approach 1:
The substrate is manufactured as a single curved piece that directly conforms to the bodywork profile, eliminating the need to assemble multiple planar plates with connecting elements. This approach significantly reduces device complexity by removing numerous fixing and connecting components.
Solution Approach 2:
The substrate integrates both the structural support function and the curved profile definition function into a single component, eliminating the need for separate connecting and fixing elements that would be required to assemble multiple planar plates into a curved configuration.
3Shape
If planar plates are arranged in staircase configuration, then curved profile is achieved, but masking of electroluminescent elements occurs
Solution Approach 1:
The curved substrate provides an uninterrupted mounting surface for electroluminescent elements, eliminating the staircase configuration that causes mutual masking. Elements arranged on the curved surface have unobstructed light emission paths, ensuring no element masks another while maintaining the curved aesthetic profile.
4Illumination intensity
If uniform electrical energy is supplied to all electroluminescent elements, then homogeneous light output is achieved, but regulatory light intensity distribution requirements cannot be met
Solution Approach 1:
The control assembly provides differentiated electrical energy supply to different zones of electroluminescent elements based on their position along the curved substrate. This local variation in energy supply enables the device to meet regulatory light intensity distribution requirements in different directions while maintaining overall system functionality.
Solution Approach 2:
The control assembly dynamically adjusts the electrical energy supplied to individual electroluminescent elements or groups of elements based on their spatial position and the required light intensity distribution. This dynamic control enables compliance with regulatory requirements that specify different minimum and maximum light intensity values for different emission directions.
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 allows for a compact and efficient light emission device that meets regulatory light intensity requirements by varying light intensities along the curved substrate, enhancing the device's design and functionality while maintaining a uniform appearance.
Implementation Method 1
a plurality of electroluminescent elements arranged on the substrate and configured to emit light rays when supplied with electrical energy
Data Source
AI summary
A light emission module, in particular for a motor vehicle. The module includes a substrate comprising a curved main portion extending in a longitudinal direction. A plurality of electroluminescent elements is arranged on the substrate and configured to emit light rays when supplied with electrical energy. The electroluminescent elements are distributed along the longitudinal direction, and a control assembly suitable for regulating the electrical energy supplied to the electroluminescent elements. The control assembly has a mode of operation in which the control assembly is configured to supply the electroluminescent elements with respective electrical energies and/or powers determined at least as a function of respective main directions of light emission of the electroluminescent elements to obtain at least two maximum light intensities emitted by the electroluminescent elements in the corresponding main direction of emission which are different along the longitudinal direction of the substrate.