Vehicle Laminated Glass Shared Busbar Heating
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Solution Overview
Problem
The existing laminated glass for vehicles has complex wiring due to separate busbars for heating the visible and information acquisition areas, which complicates the heating structure.
Innovation Solution
A laminated glass design where a third busbar is introduced, allowing electric heating wires to generate heat in both the visible and information acquisition areas, simplifying the wiring by using a single set of electric heating wires and shared busbars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate busbars are provided for heating the visible area and information acquisition area, then heating effectiveness is improved, but device complexity increases
Solution Approach 1:
The patent merges the heating function for the visible area and information acquisition area into a single integrated heating structure. The same busbars (first and second busbars) are used to supply power to heating wires that extend across both the visible area 105 and information acquisition area 106, eliminating the need for separate busbar systems while maintaining heating effectiveness in both zones.
Solution Approach 2:
The busbars and heating wires are designed to serve multiple functions simultaneously. The first and second busbars not only heat the visible area through the first heating wires but also extend to heat the information acquisition area through the same wiring system, making the heating structure universal for both functional zones.
2Area of stationary object
If multiple separate heating systems are used for different areas, then heating coverage is improved, but power consumption increases
Solution Approach 1:
The patent combines the heating systems for the visible area and information acquisition area into a single integrated system. The same busbars and power supply circuitry serve both areas, reducing redundant power consumption while maintaining comprehensive heating coverage across the entire windshield surface.
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 design simplifies the wiring of the heating structure, ensuring effective removal of fog and ice from both areas, thereby improving the accuracy of information acquisition and reducing power consumption.
Implementation Method 1
a plurality of electric heating wires arranged in the visible area and configured to generate heat with a voltage applied by the first busbar and the second busbar
Data Source
AI summary
A laminated glass for a vehicle includes a first glass plate, a second glass plate, an interlayer, a first busbar and a second busbar arranged such that a visible area is interposed in a predetermined direction between the first busbar and the second busbar, a plurality of electric heating wires arranged in the visible area to generate heat with a voltage applied by the first busbar and the second busbar, and a third busbar arranged at an opposite side of the visible area from the second busbar, wherein the third busbar and the first busbar are arranged such that an information acquisition area is interposed in the predetermined direction between the third busbar and the first busbar, and at least one of the electric heating wires is arranged in the information acquisition area to generate heat with a voltage applied by the third busbar and the first busbar.