Vehicle Window Light Guide Strip Layout for Hole-Free Sealing

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Solution Overview

Problem

Current vehicle window assemblies that emit light require holes in bright strips, compromising sealing and optical performance and increasing technical costs.

Innovation Solution

A vehicle window assembly design that incorporates light guide strips housed in a sealing box fixed to the glass sheet without holes, using fixing members, and includes light-emitting modules and shielding members to enhance illumination and aesthetics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a hole is defined in a bright strip to arrange light source or light guide, then light emission effect is achieved, but sealing performance and optical performance are compromised

Engineering Contradiction:
Improvelight emission effectVSAvoidsealing performance
Core Design Contradiction:
Illumination intensityVSReliability

Solution Approach 1:

The patent divides the light guide into multiple segments (first light guide portion and second light guide portion) that are arranged on opposite sides of the glass sheet. This segmentation allows light to be guided through the edges of the glass sheet without requiring holes in the bright strip, thereby maintaining sealing performance while achieving light emission.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent transitions from a traditional planar light guide arrangement to a three-dimensional configuration where light guide portions are positioned on opposite sides of the glass sheet and extend along its edges. This dimensional change enables light emission without compromising the integrity of the bright strip.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Illumination intensity

If a hole is defined in a bright strip to arrange light source or light guide, then light emission effect is achieved, but optical performance deteriorates

Engineering Contradiction:
Improvelight emission effectVSAvoidoptical performance
Core Design Contradiction:
Illumination intensityVSManufacturing precision

Solution Approach 1:

By segmenting the light guide into multiple portions positioned on opposite sides of the glass sheet, the patent eliminates the need for holes in the bright strip. This maintains the optical integrity and precision of the bright strip while achieving the desired light emission effect through edge illumination.

Inventive Principle:
Principle #1Segmentation

3Illumination intensity

If a hole is defined in a bright strip and additional light source cooperation is arranged, then light emission is achieved, but technical costs increase

Engineering Contradiction:
Improvelight emissionVSAvoidtechnical costs
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The patent merges the light guide function directly into the existing bright strip structure by positioning light guide portions on opposite sides of the glass sheet. This integration eliminates the need for separate light sources and additional cooperative components, thereby reducing technical costs while maintaining light emission functionality.

Inventive Principle:
Principle #5Merging (Combining)

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

Ensures sealing and optical performance while reducing technical costs by eliminating the need for holes in the bright strip, allowing for varied light intensities and colors, and enhancing vehicle visibility and safety.

Implementation Method 1

a light guide strip (11), wherein the light guide strip (11) is arranged on one side surface of the vehicle window glass sheet (12)

Methodology Applied
Scientific EffectTotal internal reflection: Total Internal Reflection

Data Source

PatentUS12351106B2Vehicle window assembly with plurality of light guide strips and vehicle having the same
Publication Date: 2025.07.08 FUYAO GLASS IND GROUP CO LTD
  • US12351106B2 patent drawing
  • US12351106B2 patent drawing
  • US12351106B2 patent drawing

AI summary

A vehicle window assembly and a vehicle are provided in the disclosure. The vehicle window assembly includes multiple light guide strips spaced apart from each other, a vehicle window glass sheet, and a sealing box. The multiple light guide strips are arranged on one side surface of the vehicle window glass sheet, the sealing box is disposed at one side of each of the multiple light guide strips away from the vehicle window glass sheet, the sealing box defines grooves at positions respectively corresponding to the multiple light guide strips, and each of the multiple light guide strips is received in one of the grooves. The multiple light guide strips are received in the sealing box, the sealing box is directly fixed to the vehicle window glass sheet by the fixing member.