Transparent Plastic Reflector with Fluorescent Material for Vehicle Lamp
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Solution Overview
Problem
Conventional vehicle lamps require additional space and components for reflectors, leading to increased installation space, weight, and costs, as well as limitations in integrating reflectors with light functions due to the need for separate installation and compatibility issues with light sources.
Innovation Solution
A vehicle lamp design that integrates a reflector made of transparent plastic with fluorescence material, where the excitation light source radiates blue light to stimulate red fluorescence, allowing the reflector to function as both a reflector and a light source without additional space, using a color filter to ensure the reflector emits red light for specific light functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate reflector is installed in the vehicle lamp, then the retroreflection function is improved, but the installation space and device complexity increase
Solution Approach 1:
The patent combines the reflector and light source into a single integrated lamp unit. The reflector is formed as an integral part of the lamp housing, and the light source is directly mounted within the reflector structure, eliminating the need for separate reflector and light source components. This merging reduces installation space while maintaining both retroreflection and lighting functions.
Solution Approach 2:
The integrated lamp unit serves multiple functions simultaneously: the reflector provides retroreflection for visibility, while the embedded light source provides illumination. This multi-functional design eliminates the need for separate components, reducing both installation space and device complexity while improving overall system efficiency.
2Reliability
If a separate reflector is installed in the vehicle lamp, then the retroreflection function is improved, but the device complexity and component count increase
Solution Approach 1:
The patent merges the reflector and light source into a single integrated lamp unit. The reflector is formed as an integral part of the lamp housing, and the light source is directly mounted within the reflector structure, eliminating the need for separate reflector and light source components. This merging reduces installation space while maintaining both retroreflection and lighting functions.
Solution Approach 2:
The integrated lamp unit serves multiple functions simultaneously: the reflector provides retroreflection for visibility, while the embedded light source provides illumination. This multi-functional design eliminates the need for separate components, reducing both installation space and device complexity while improving overall system efficiency.
3Volume of stationary object
If a reflector is integrated with light function in the same area, then the installation space is reduced, but the light distribution and visibility are limited
Solution Approach 1:
The integrated lamp incorporates multiple light sources of different types (incandescent bulb for backward radiation, LED for side radiation) within the same reflector structure. This segmentation of light source functions allows simultaneous achievement of retroreflection and directional illumination, improving light distribution while maintaining space efficiency.
Solution Approach 2:
Different regions of the integrated lamp are optimized for different functions: the central area contains the incandescent bulb for backward radiation, while the side areas contain LEDs for lateral illumination. This local optimization of light source placement and type improves overall light distribution while maintaining compact integration.
4Adaptability or versatility
If multiple light sources are combined in one lamp housing, then the functionality is improved, but the heat management and reliability challenges increase
Solution Approach 1:
The patent introduces a heat sink as an intermediary component between the light sources and the lamp housing. The heat sink absorbs and dissipates heat generated by the incandescent bulb and LED, preventing heat accumulation that could damage other components. This intermediary heat management structure enables reliable operation of multiple light sources in close proximity.
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 achieves a space-saving combination of reflector and light function, enhancing visibility and safety while reducing component count and installation complexity, with improved energy efficiency and design flexibility.
Implementation Method 1
A fluorescence material is inserted into the transparent plastic of the reflector body, which radiates fluorescence light of a fluorescence light colored for a light function by radiation with excitement light emitted by the excitement light source
Data Source
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AI summary
A light source (01) and a vehicle light (10) are described. The light source (01) comprises an excitation light source (02) and a reflector (03). The reflector (03) comprises a reflector body (30) made of transparent plastic. The reflector body (30) is provided with a reflector geometry (33) at a distance from its side (31) facing the reflected light. This geometry reverses reflected light entering the reflector body (30) from at least one direction and causes it to exit in the opposite direction to its entry. The excitation light source (02) shines at least some of the excitation light it emits into the reflector body (30).A fluorescent material is incorporated into the transparent plastic of the reflector body (30), which, when irradiated with excitation light emitted from the excitation light source (02), emits fluorescent light of a fluorescent color intended for a specific lighting function. The vehicle lamp (10) is characterized by such a light source (01) with an excitation light source (02) and with a reflector (03) for fulfilling and/or contributing to at least one lighting function of the vehicle lamp.