Vehicle Window Module With Inner Plastic Burn Protection
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Solution Overview
Problem
Existing window modules in vehicles are prone to causing burns to rear passengers due to the high temperature of the glass surfaces during solar irradiation, as current protective coatings are insufficient in reducing the risk of burns.
Innovation Solution
A fixed transparent window module with a plastic structure integrated on the inner surface, which provides burn protection by maintaining a lower surface temperature and preventing direct contact with the glass, potentially using foaming or overmolding techniques for installation, and can be designed to match aesthetic and functional requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent glass window is used to allow full visibility for backseat passengers, then visibility is improved, but the risk of burns from solar heating increases
Solution Approach 1:
A plastic structure is introduced as an intermediary element between the hot glass window and the passenger. This plastic structure has lower thermal conductivity than glass, creating a thermal barrier that prevents direct heat transfer to the passenger while maintaining visibility through the transparent window.
Solution Approach 2:
The solution combines glass (for transparency and structural integrity) with plastic material (for thermal insulation and burn protection). This composite approach leverages the advantageous properties of both materials: the glass provides visibility and strength, while the plastic layer provides thermal protection against solar heating.
2Weight of moving object
If the glass window is made thinner to reduce weight, then weight is reduced, but the risk of burns increases due to lower thermal mass
Solution Approach 1:
By combining thin glass with a plastic layer, the system achieves lightweight construction while compensating for the reduced thermal mass of the thin glass. The plastic material provides the necessary thermal insulation to prevent burns even when the glass is made thinner.
Solution Approach 2:
The solution changes the thermal parameters of the window system by adding a plastic layer with different thermal properties. This allows the glass to be made thinner (changing geometric parameters) while maintaining safe surface temperatures through the thermal characteristics of the plastic material.
3Object-affected harmful factors
If a protective coating is applied to the glass surface to reduce burn risk, then burn protection is improved, but manufacturing complexity increases
Solution Approach 1:
Instead of applying complex protective coatings to the glass, the solution uses a separate plastic structure that can be independently manufactured and attached. This plastic component serves the protective function without requiring complex coating processes on the glass itself.
Solution Approach 2:
The protective function is segmented from the window glass itself and implemented as a separate plastic structure. This segmentation allows each component to be optimized independently: the glass for transparency and strength, and the plastic for thermal protection, simplifying the overall manufacturing process.
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 plastic structure effectively prevents burns by maintaining a surface temperature below 60°C, reducing the risk of injury and allowing for design flexibility, light weight, and efficient production, while potentially eliminating the need for additional coatings.
Implementation Method 1
The at least one plastic structure has a lower thermal conductivity compared with the at least one window
Data Source
AI summary
A window module, in particular a fixed transparent window module, for being fitted on a vehicle body which has a body frame, which at least partially defines a roof opening and on which a peripheral supporting receptacle for receiving the window module is formed, having at least one at least partially transparent window, which has an outer surface facing a vehicle environment and an inner surface opposite the outer surface and facing a vehicle interior, wherein at least one plastic structure, which is at least configured as a burn protection for at least one vehicle occupant, is disposed on the to inner surface.