Vehicle Window Light-Decoupling Structure With Polymer Scattering Elements
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Solution Overview
Problem
Existing vehicle windows with light-decoupling devices face challenges in maintaining material bond quality between the outer and inner window bodies, limiting design flexibility.
Innovation Solution
Incorporating transparent structural elements made of polymer materials, such as polyurethane, molded or attached to the inner side of the window body assembly via extrusion, foaming, injection molding, or gluing, to form a light-decoupling device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If printed structures are used as light-decoupling devices on the inner window body, then light can be coupled out of the inner window body in the direction of the vehicle interior, but the material bond quality between the outer window body and the inner window body is impaired
Solution Approach 1:
A polymer-based light-decoupling device is introduced as an intermediary element between the inner window body and the vehicle interior. This device serves as a mediator that performs the light decoupling function while being bonded to the inner window body, thus preventing direct bonding impairments to the structural adhesive layer between the outer and inner window bodies.
Solution Approach 2:
The light-decoupling function is segmented from the window body structure itself and implemented as a separate, dedicated component. This segmentation allows the light-decoupling device to be independently optimized for optical performance while being attached to the inner window body, preserving the integrity of the structural bonding between window bodies.
2Illumination intensity
If conventional light-decoupling devices are used, then light can be decoupled from the light-conducting layer, but the design options are limited
Solution Approach 1:
The patent utilizes the versatility of polymer materials by changing parameters such as material composition, geometric configuration, and bonding method. The polymer-based light-decoupling device can be extruded, foamed, injection molded, or glued, allowing for diverse design options while maintaining effective light decoupling performance.
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 solution enhances design flexibility while maintaining the material bond quality, allowing for efficient light decoupling and providing effective illumination within the vehicle interior.
Implementation Method 1
molded or connected to the inner side of the window body assembly by extrusion or foaming or injection molding or gluing
Implementation Method 2
molded or connected to the inner side of the window body assembly by extrusion or foaming or injection molding or gluing
Implementation Method 3
molded or connected to the inner side of the window body assembly by extrusion or foaming or injection molding or gluing
Implementation Method 4
molded or connected to the inner side of the window body assembly by extrusion or foaming or injection molding or gluing
Implementation Method 5
the plastic elements forming scattering elements and serving as illuminating elements of the vehicle window
Data Source
AI summary
A vehicle window includes a window body assembly having at least one window body, the window body assembly having an outer side facing the vehicle environment and an inner side facing the vehicle interior and a light-conducting layer forming the inner side; an illuminating device configured to couple light into the light-conducting layer; and a light-decoupling device configured to decouple light from the light-conducting layer in the direction of the vehicle interior. The light-decoupling device includes transparent structural elements made of a polymer material and molded or connected to the inner side of the window body assembly by extrusion or foaming or injection molding or gluing.