Automobile Lamp with Fluorescent Layer for Light Distribution
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Solution Overview
Problem
Existing automobile lamp optical systems face challenges in achieving stop light distribution regulations while maintaining design flexibility, light uniformity, and thermal resistance, and often require significant structural components that limit design freedom and increase complexity.
Innovation Solution
A lamp design featuring a circuit board with light sources, an optical resin layer, and a fluorescent material layer, where the fluorescent material layer includes a resin matrix with dispersed red fluorescent materials, optimized for light emission and distribution, and an optical filter member to control wavelength, ensuring compliance with stop light regulations and improving thermal resistance and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a direct lighting method or indirect lighting method is used, then light distribution function is achieved, but a significant air gap of at least about 15 mm or more is required
Solution Approach 1:
The patent combines the light source unit, optical resin layer, and fluorescent material layer into a single integrated assembly mounted directly on the circuit board, eliminating the need for separate reflection surfaces and inner lenses. This merging of components achieves light distribution while minimizing the air gap distance.
Solution Approach 2:
The patent introduces an optical resin layer as an intermediary medium between the light source unit and fluorescent material layer. This optical resin serves as a mediator to transmit and distribute light effectively, replacing the need for large air gaps used in conventional direct or indirect lighting methods.
2Illumination intensity
If a reflection surface and inner lens are used, then light distribution is achieved, but the structure becomes complex and degree of freedom is limited
Solution Approach 1:
The patent merges multiple optical functions (light distribution, diffusion, and wavelength conversion) into a single integrated structure consisting of the optical resin layer and fluorescent material layer, eliminating the need for separate reflection surfaces and inner lenses, thereby simplifying the overall lamp structure.
Solution Approach 2:
The optical resin layer serves multiple functions simultaneously: it acts as a light transmission medium, a structural support, and a mounting platform for the fluorescent material layer. This multi-functionality reduces the number of separate components needed, simplifying the structure while maintaining design freedom.
3Illumination intensity
If OLED lamp optical systems are used, then surface light source characteristics and stereo effects are achieved, but stop light distribution regulations are not satisfied
Solution Approach 1:
The patent applies local quality by using blue light-emitting LEDs with peak wavelengths of 420-470 nm in specific regions, combined with red fluorescent materials that convert the light to wavelengths of 600-780 nm. This localized wavelength conversion ensures compliance with stop light distribution regulations while maintaining surface light source characteristics.
Solution Approach 2:
The patent changes the wavelength parameter of the light emission by using fluorescent materials that convert blue light (420-470 nm) to red light (600-780 nm). This parameter transformation ensures the lamp meets stop light distribution regulations while preserving the surface light source characteristics of OLED systems.
4Illumination intensity
If conventional lamp structures are used, then light distribution is achieved, but thermal resistance, yellowing resistance, and durability are insufficient
Solution Approach 1:
The patent uses composite materials including an optical resin layer with dispersed fluorescent materials, where the resin matrix provides structural integrity and thermal stability while the fluorescent particles enable wavelength conversion. This composite structure enhances thermal resistance, yellowing resistance, and overall durability compared to conventional lamp materials.
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 design achieves excellent light uniformity, thermal resistance, and compliance with stop light distribution regulations, while simplifying the structure to enhance design freedom and productivity, and reducing production costs by minimizing the need for complex optical components.
Implementation Method 1
a fluorescent material layer provided in close contact with a top surface of the optical resin layer, wherein the fluorescent material layer includes: a resin matrix; and fluorescent materials dispersed within the resin matrix
Data Source
AI summary
Disclosed are a lamp for an automobile and an automobile including the lamp. According to one aspect of the present disclosure, provided is a lamp for an automobile, the lamp including: a circuit board; a plurality of light sources provided on a top surface of the circuit board; an optical resin layer provided on the top surface of the circuit board and configured to cover the plurality of light sources; and a fluorescent material layer provided in close contact with a top surface of the optical resin layer. The fluorescent material layer includes: a resin matrix; and fluorescent materials dispersed within the resin matrix.