Vehicle Signal Light Optical Partition for Uniform Planar Illumination
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Solution Overview
Problem
Current vehicle lighting technologies, particularly OLEDs, face challenges such as short service life, moisture penetration, low luminance, limited design flexibility, and high costs, which hinder their widespread adoption in automotive applications. Additionally, existing solutions for planar lighting units struggle with homogeneous illumination and compliance with various regulatory requirements for different markets.
Innovation Solution
A signal light device featuring a housing with a transparent or translucent cover, incorporating a thin-walled partition panel with specific reflective surfaces and gaps to optimize light distribution, and using LED light sources, which minimizes installation space and enhances luminance homogeneity while meeting regulatory standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If OLED planar light sources are used, then compact installation dimensions and low heat production are achieved, but service life is reduced and moisture penetration occurs
Solution Approach 1:
The patent replaces the fragile OLED technology with conventional LED point sources that are more durable and less susceptible to moisture, accepting the trade-off of using shorter-lived but more reliable components in a protected configuration
Solution Approach 2:
The patent uses a transparent or translucent cover (thin film) that protects the internal LED components from moisture and environmental damage while maintaining the compact planar appearance, resolving the contradiction between compact dimensions and protection from moisture penetration
2Reliability
If conventional LED point sources with optical components are used, then reliable light emission is achieved, but installation space and manufacturing costs increase
Solution Approach 1:
The patent integrates multiple optical functions (light emission, reflection, diffusion, and directional control) into a single unified housing structure with integrated optical surfaces, eliminating the need for separate optical components and reducing overall installation space
Solution Approach 2:
The patent uses the internal three-dimensional space of the housing to position reflective surfaces and optical elements at strategic locations, creating efficient light paths that achieve the required optical performance without increasing the external footprint of the lighting device
3Illumination intensity
If complex optical component assemblies are used, then homogeneous illumination is achieved, but device complexity and manufacturing costs increase
Solution Approach 1:
The patent applies different optical properties to different regions of the housing interior - specific reflective surfaces in certain locations, diffusive surfaces in others - to achieve homogeneous illumination output without requiring complex optical assemblies throughout the entire device
Solution Approach 2:
The housing structure serves multiple functions simultaneously: structural support, light emission containment, optical reflection, light diffusion, and protection of internal components, eliminating the need for separate dedicated optical components and reducing overall device complexity
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 achieves efficient light distribution and compliance with diverse regulatory requirements, reducing installation space and manufacturing costs while ensuring reliable and aesthetically pleasing vehicle lighting.
Implementation Method 1
The first and second reflective surfaces are configured to reflect light rays
Data Source
AI summary
A signal light device (1) of a motor vehicle with a signal lighting unit (3) that comprises housing (1a) covered by cover (2) and in the housing a carrier (5) secured to the housing (la) and with its front panel (7) facing the cover (2). The carrier (5) comprises a supporting surface (22) with at least one light source (6), a front panel (7) and a thin-walled partition panel (12) situated between the supporting surface (22) and the front panel (7). The partition panel (12) comprises an input surface (20) facing the supporting surface (22) and an output surface (21) wherein the supporting surface (22) is fitted with the main reflective surface (11) to reflect light rays (10). The space between the front panel (7) and the output surface (21) and between the supporting surface (22) and the input surface (20) is only filled with air.