Vehicle Window Glass Feeding Electrode Layout for Deicing
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Solution Overview
Problem
Existing vehicle window glass heaters fail to sufficiently melt frost, snow, or ice in areas where the feeding electrode extends into the lower side heating area, leading to incomplete deicing and potential hazards for the driver's field of view and wiper operation.
Innovation Solution
The window glass features a laminated structure with a conductor pattern including heating wires on the interior surface of the exterior glass plate, where the feeding electrode is positioned on the interior surface close to the lower side of the exterior glass plate, avoiding extension into the lower side heating area, and includes a configuration of lower and lateral side heating wires to ensure effective heat generation across multiple heating areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the feeding electrode extends into the lower side heating area to provide sufficient power area, then the feeding electrode can supply enough power to the heating wires, but the heating wire cannot generate sufficient heat in the lower side heating area to melt frost, snow, or ice
Solution Approach 1:
The heating area is divided into a lower side heating area and lateral side heating areas, with heating wires configured to extend into the lateral side heating areas but not into the lower side heating area. The feeding electrode is positioned to extend only to the lateral side heating areas, separating its function from the heating function in the lower side heating area.
Solution Approach 2:
The feeding electrode is extracted from the lower side heating area to eliminate the conflict between its power supply function and the heating function. By positioning the feeding electrode only in the lateral side heating areas, the patent ensures that the lower side heating area is dedicated solely to heating without interference from the feeding electrode.
2Temperature
If the feeding electrode is positioned to avoid the lower side heating area, then sufficient heat can be generated in the lower side heating area, but the feeding electrode may not provide sufficient power area to support the heating wires
Solution Approach 1:
The heating wires are configured to extend not only in the lower side heating area but also into the lateral side heating areas, utilizing an additional spatial dimension. This allows the heating wires to access power from the feeding electrode in the lateral side heating areas while still providing heating coverage in the lower side heating area through their extended path.
3Power
If the heating wires are configured to extend into lateral side heating areas, then sufficient power can be supplied from the feeding electrode, but the heating area coverage in the lower side heating area may be reduced
Solution Approach 1:
The lateral side heating areas serve dual functions: they provide a region where the feeding electrode can supply power to the heating wires, and they also contribute to the overall heating coverage of the windshield. This multi-functional design ensures both adequate power supply and comprehensive heating area coverage.
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 configuration ensures sufficient heat is generated to melt frost, snow, or ice on the window glass, maintaining a clear driver's view and proper wiper operation without shifting the lower heating area, thus enhancing vehicle design and functionality.
Implementation Method 1
a heating wire disposed on a vehicle interior side surface of the vehicle exterior side glass plate to heat a heating area
Data Source
Figure 1
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Figure 4~5
AI summary
Window glass for a vehicle includes laminated glass including a vehicle exterior side glass plate, a vehicle interior side glass plate and an interlayer interposed between the vehicle exterior side glass plate and the vehicle interior side glass plate; and a conductor pattern including a heating wire disposed on a vehicle interior side surface of the vehicle exterior side glass plate to heat a heating area, and a feeding electrode disposed on a part of the vehicle interior side surface close to a lower side of the vehicle exterior side glass plate such that the heating wire is fed with power through the feeding electrode; wherein the feeding electrode is disposed so as not to extend into the heating area.