Inductive Windshield Display Unit for Simplified Installation
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Solution Overview
Problem
The installation and maintenance of windshields with integrated display units in motor vehicles are complicated due to the need for wiring and complex sealing measures, increasing construction effort and costs.
Innovation Solution
A laminated windshield with a display unit featuring a flexible printed circuit and a secondary coil for inductive energy coupling, eliminating the need for wiring and allowing for a self-contained, simplified installation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If display units are integrated into windshields with wiring and conventional contacting, then display functionality is achieved, but construction effort and installation complexity increase significantly
Solution Approach 1:
The patent replaces the mechanical wiring system with an inductive energy and data transmission system. A primary coil in the dashboard communicates wirelessly with a secondary coil in the display unit, eliminating the need for physical electrical connections through the windshield's water box, thereby reducing construction complexity while maintaining full display functionality
Solution Approach 2:
The inductive coupling system serves multiple functions simultaneously: it provides both power supply and data communication between the dashboard and the display unit through the same electromagnetic field, reducing the number of separate systems needed and simplifying the overall construction
2Productivity
If wiring and sealing measures are implemented for display unit installation, then energy supply and control are achieved, but installation time and construction effort increase
Solution Approach 1:
By replacing the mechanical wiring and sealing process with inductive coupling, the installation process is dramatically simplified. The display unit can be installed without complex wiring harnesses or additional sealing measures at the water box, reducing both installation time and construction effort while maintaining reliable energy and data transmission
3Reliability
If conventional wiring systems are used for display units, then reliable energy supply is achieved, but the water box and sealing measures require reconstruction and additional measures
Solution Approach 1:
The patent replaces the mechanical electrical connection system that requires water box reconstruction with a contactless inductive system. The primary coil in the dashboard and secondary coil in the display unit establish a reliable electromagnetic connection that transmits both power and data without penetrating the windshield's sealing structure, thereby maintaining reliability while reducing complexity
Solution Approach 2:
The electromagnetic field acts as an intermediary between the dashboard's power supply and the display unit's components. This intermediate field allows energy and data to be transmitted through the windshield structure without requiring physical penetration or reconstruction of the water box sealing system
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 inductive energy supply simplifies the installation and reduces construction effort, enabling a more cost-effective and compact design for windshields with integrated display units, while maintaining reliable energy transmission and display functionality.
Implementation Method 1
the secondary coil is designed for making available electrical energy, which is inductively coupled into the secondary coil, in order to supply the display unit with energy
Data Source
AI summary
A windshield for a motor vehicle with a display unit is disclosed. The windshield is realized in the form of a laminated glass pane with at least an outer pane, an inner pane and an intermediate compound foil. The display unit is arranged between the outer pane and the inner pane, wherein the display unit features a flexible printed circuit and at least one display element arranged on the flexible printed circuit, as well as a secondary coil. The secondary coil is designed for making available electrical energy, which is inductively coupled into the secondary coil, in order to supply the display unit with energy. The present disclosure furthermore relates to a system, as well as a motor vehicle.