Illuminated Vehicle Emblem Light Guide for Uniform Thin Profiles
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Solution Overview
Problem
Existing motor vehicle emblems require thicker and larger structures for stability and illumination, and existing illuminated emblems often necessitate design changes for installation, lacking a homogeneous luminous impression.
Innovation Solution
A light guide assembly with scattering particles and deflection devices, including reflective surfaces, allows light to be coupled and deflected within the light guide, enabling a flat design and homogeneous illumination without altering the emblem's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thicker and larger structures are used for the emblem assembly, then stability and weather resistance are improved, but the design complexity and size increase
Solution Approach 1:
The patent employs thin film structures for the emblem body and light guide arrangement, replacing traditional thick rigid structures. The light guide arrangement with coupling sections and light guides creates a flat, thin-profile illuminated emblem that maintains structural integrity while reducing overall thickness and complexity
Solution Approach 2:
The emblem assembly combines multiple materials including the emblem body material, light guide material, and scattering particles to create a composite structure that achieves both thinness and durability. This composite approach allows the assembly to maintain stability and weather resistance without requiring increased thickness
2Illumination intensity
If traditional illumination methods are used, then the emblem can be illuminated, but the luminous homogeneity is poor and design changes are required
Solution Approach 1:
The patent introduces scattering particles as an intermediary element within the light guide arrangement. These particles scatter the light from the light source, transforming directional light into uniformly distributed illumination across the emblem surface, thereby achieving homogeneous luminous impression without requiring emblem design modifications
Solution Approach 2:
The light guide arrangement features localized coupling sections with specific optical properties that differ from the main light guide body. This local differentiation in optical quality allows for optimized light coupling and distribution, achieving uniform illumination while maintaining the overall emblem design integrity
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 provides a thin, stable, and uniformly illuminated emblem assembly that maintains the original design, using LEDs and optical fibers with scattering particles and reflective surfaces for efficient light guidance and output.
Implementation Method 1
the at least one light guide includes scattering particles which enable a homogeneous luminous impression of the light that can be coupled out of the at least one light guide
Implementation Method 2
the deflection device includes at least one reflective surface which is assigned to the at least one light guide and is designed to deflect the light coupled in a light coupling direction from the at least one light source by reflection into a deflection direction in the light guide
Implementation Method 3
the light or light rays can propagate further within the optical fiber itself towards the corresponding output coupling section by means of total internal reflection at a lateral surface of the optical fiber
Data Source
Figure 1~5
AI summary
Assembly (10) for the illuminated display of an emblem (50) for a motor vehicle, comprising: - an emblem body (100) which has an opaque emblem (50) on a visible side, - a lighting unit (200) comprising - at least one light source (210), - a light guide arrangement (300) for guiding coupled light, which comprises at least one coupling section (310) and at least one light guide (320), wherein the light guide (320) comprises an output coupling section (330) for coupling out the light, wherein the lighting unit (200) is arranged on a side facing away from the visible side of the emblem body (100), wherein the light guide arrangement (300) substantially follows the shape of the emblem (50), and wherein the output coupling section (330) of the at least one light guide (320) projects from an edge (110) of the emblem body (100) in the light coupling direction (L1), so that light is directed transversely to the The light coupling direction (L1) can be coupled out of the light guide (320).