Illuminated Vehicle Trim Part With Selective Foil Graphics

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Solution Overview

Problem

Existing methods for producing illuminated vehicle trim parts with complex graphics are costly due to high scrap rates and complex manufacturing processes, particularly in creating illuminated front grilles with detailed logos and patterns.

Innovation Solution

The solution involves dividing the trim part graphics into simple and complex areas, using opaque components and foils selectively, with foils applied only where complexity is high, and employing painted layers and light sources to achieve illumination effects, while minimizing costly foil usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If multiple layer painting combined with laser removal of paint is used to provide complex graphics, then the graphics complexity is improved, but the manufacturing cost and scrap rate increase

Engineering Contradiction:
Improvegraphics complexityVSAvoidmanufacturing cost
Core Design Contradiction:
ShapeVSEase of manufacture

Solution Approach 1:

The trim part surface is divided into multiple zones with different illumination requirements. Complex graphics (e.g., logos) are segmented from simple geometric patterns, allowing different manufacturing techniques to be applied to each segment. This reduces overall manufacturing complexity and cost while maintaining high graphics quality where needed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different surface treatments and illumination methods are applied to different areas of the trim part based on local requirements. High-value complex graphics receive premium treatment (foil with cut-outs), while simpler areas use more economical methods (painted layers), optimizing the balance between aesthetics and manufacturing cost.

Inventive Principle:
Principle #3Local quality

2Shape

If decorated foils with screen printing are used to provide complex graphics, then the graphics quality is improved, but the manufacturing cost increases

Engineering Contradiction:
Improvegraphics qualityVSAvoidmanufacturing cost
Core Design Contradiction:
ShapeVSEase of manufacture

Solution Approach 1:

The trim part is segmented into zones where foil application is only used for areas requiring high graphics quality (e.g., central logo areas), while other areas use simpler painted layers. This selective application reduces material costs and manufacturing complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Foil with cut-outs is applied locally only to areas where high graphics quality is critical, such as manufacturer logos or emblematic patterns. Simpler painted layers are used for peripheral or less critical areas, optimizing the balance between visual impact and manufacturing cost.

Inventive Principle:
Principle #3Local quality

3Illumination intensity

If foil is used for illuminated areas, then the illumination effect is improved, but the manufacturing cost increases

Engineering Contradiction:
Improveillumination effectVSAvoidmanufacturing cost
Core Design Contradiction:
Illumination intensityVSEase of manufacture

Solution Approach 1:

The trim part is divided into multiple illumination zones with different requirements. Foil material is used only in zones where high illumination quality is needed (e.g., logo areas), while simpler painted layers with integrated lighting are used in other zones, reducing overall material costs.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Foil with precise cut-outs is applied locally to areas requiring superior illumination effects, such as central emblems or key design elements. Peripheral areas or less critical zones use more economical painted layers, optimizing the balance between visual impact and manufacturing cost.

Inventive Principle:
Principle #3Local quality

4Illumination intensity

If the complete trim part is covered with foil, then the illumination quality is improved, but the manufacturing cost and complexity increase

Engineering Contradiction:
Improveillumination qualityVSAvoidmanufacturing complexity
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The trim part is segmented into multiple zones with different illumination requirements. Only specific zones (e.g., logo areas, central emblems) are covered with foil, while other zones use simpler painted layers. This reduces manufacturing complexity and material costs while maintaining high illumination quality where needed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Foil application is restricted to local areas where high illumination quality is critical, such as manufacturer logos or emblematic patterns. The majority of the trim part surface uses more economical painted layers, significantly reducing manufacturing complexity and material costs while maintaining aesthetic appeal.

Inventive Principle:
Principle #3Local quality

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 approach reduces manufacturing costs by limiting expensive foil use to complex areas, maintaining effective illumination with reduced production steps and improved durability against environmental factors.

Implementation Method 1

a light source for providing light, a transparent carrier layer, at least one opaque component applied to the carrier layer or integrated into the carrier layer, and/or at least one painted layer applied to the carrier layer, and a foil comprising printed areas, and/or having at least one cut-out through which the light provided by the light source can penetrate

Methodology Applied
Scientific EffectLight emission and penetration: Light

Data Source

PatentEP4653259A1Illuminated trim part of or for a vehicle and method for producing such an illuminated trim part
Publication Date: 2025.11.26 HELLA SATURNUS SLOVENIJA PROIZVODNJA SVETLOBNE OPREME ZA MOTORNA IN DRUGA VOZILA D O O
  • EP4653259A1 patent drawingFigure 1A~1B
  • EP4653259A1 patent drawingFigure 2A~2B
  • EP4653259A1 patent drawingFigure 3A~4

AI summary

The present invention relates to an illuminated or illuminable trim part (121, 122, 123) of or for a vehicle (10), comprising - a light source (28) for providing light, - a transparent or translucent carrier layer (22), ∘ at least one opaque component (30) applied to the carrier layer (22) or integrated into the carrier layer (22), and/or ∘ at least one painted layer (44) applied to the carrier layer (22), - a foil (38) ∘ comprising printed areas (40), and/or ∘ having at least one cut-out (42) through which the light provided by the light source (28) can penetrate. Moreover, the present invention relates to a method for manufacturing such a trim part (121, 122, 123).