Vehicle Lighting Module Integrating Control Circuitry and Optical Interface
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Solution Overview
Problem
Conventional lighting systems for motor vehicle passenger compartments using filament bulbs or LEDs require space for electronic control circuits to maintain stable light spectrum, which reduces available space in vehicles.
Innovation Solution
A compact lighting module with a housing containing light-emitting semiconductor dies and electronic control means, including temperature sensing and electrical protection circuits, connected via an interconnection support and optical interface for guiding the light beam, ensuring light-tight and cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If electronic control circuits are used to control the light spectrum of LED lighting, then the light spectrum stability is improved, but the space occupied by the housing increases
Solution Approach 1:
The patent combines the electronic control circuit, light-emitting means, and optical interface into a single integrated housing. The control circuit is mounted on a support structure within the housing, and all components are interconnected through internal electrical and optical pathways, eliminating the need for separate external control units and reducing overall space requirements.
Solution Approach 2:
The housing serves multiple functions: it provides structural containment, acts as a light-tight enclosure, houses the electronic control circuit, supports the light-emitting means, and incorporates the optical interface for light extraction. This multi-functionality reduces the need for additional separate components and minimizes the overall housing volume.
2Manufacturing precision
If a light-tight housing is used to prevent light leaks, then the lighting control precision is improved, but the manufacturing cost increases
Solution Approach 1:
The housing is designed as a light-tight enclosure using thin-walled structures that effectively block light leakage. The lid and base are configured with precise mating surfaces and sealing features that prevent light escape without requiring thick or complex structures, thereby maintaining ease of manufacture while achieving light-tightness.
Solution Approach 2:
The housing is divided into modular components (base, lid, support structure) that can be manufactured separately and assembled. This segmentation allows for simplified manufacturing of individual parts using standard techniques, while the assembled structure achieves the required light-tightness and precision for lighting control.
3Adaptability or versatility
If multiple semiconductor dies are used to emit different wavelengths, then the lighting versatility is improved, but the device complexity increases
Solution Approach 1:
Multiple semiconductor dies emitting different wavelengths are mounted on the same support structure within the housing, sharing common electrical connection pathways and control circuitry. This merging approach allows versatile multi-wavelength lighting while reducing complexity compared to separate lighting modules for each wavelength.
Solution Approach 2:
The housing and support structure are designed to accommodate multiple types of light-emitting semiconductor dies (LEDs, laser diodes) with different wavelengths. The electrical connection means and control circuitry are configured to universally interface with various die types, providing lighting versatility without requiring separate specialized structures for each wavelength.
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 module provides stable and controlled lighting with reduced space requirements, maintaining light spectrum stability over temperature variations while minimizing space usage and production costs.
Implementation Method 1
the light-emitting means include at least two light-emitting semiconductor dies emitting light at different wavelengths
Implementation Method 2
light-emitting means disposed in the housing and adapted to emit a lighting light beam
Implementation Method 3
optical interface means for guiding the lighting beam out of the housing
Implementation Method 4
the temperature sensing means include a negative temperature coefficient thermistor
Data Source
AI summary
A lighting module for the passenger compartment of a motor vehicle includes a housing and light-emitting means arranged in the housing and able to emit a lighting light beam having a wavelength selectively chosen from at least two distinct predetermined wavelengths. Electronic control means for controlling the light-emitting means are arranged to control the emission of the lighting beam with the chosen wavelength. Also included are support for electrical interconnection carrying the light-emitting means and the control means and interconnecting same, electrical connection means for electrical connection of the light-emitting means and/or the electronic control means to the outside of the housing, and optical interface means for guiding the lighting beam outside of the housing.