Windshield Reflection Display for Large-Area Vehicle HUDs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motor vehicle display systems integrated into windshields are costly and require significant technical effort to replace or maintain, and they often require multiple display devices to achieve a large-area virtual display.
Innovation Solution
A motor vehicle display system utilizing the windshield and dashboard components as a display surface, where light beams from an image source are reflected to create a virtual image on a black background, allowing for efficient and cost-effective display of vehicle-relevant information without the need for extensive windshield replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a large-area virtual display is created using multiple display devices on the windshield, then the display area is increased, but the device complexity and cost increase significantly
Solution Approach 1:
The display system is segmented into a single image source positioned in the dashboard and a reflection region on the windshield. Instead of using multiple display devices across the windshield, the system divides the function between the image source (which generates light) and the reflection region (which displays the virtual image), thereby reducing device complexity while maintaining large display area.
2Adaptability or versatility
If display devices are integrated into the windshield structure, then the display is integrated into the vehicle, but the ease of repair and maintenance deteriorates due to high technical effort and cost
Solution Approach 1:
The display function is extracted from the windshield structure itself and relocated to a separate image source positioned in the dashboard. This allows the windshield to remain structurally intact while the display components can be independently accessed, removed, or replaced without requiring windshield replacement, significantly improving ease of repair and maintenance.
Solution Approach 2:
An intermediate reflection region is introduced between the image source and the driver's view. This reflection region acts as a mediator that allows the display function to be separated from the windshield structure, enabling independent maintenance of display components while maintaining integration with the vehicle interior.
3Illumination intensity
If an opaque black background is used for the reflection region, then the contrast of the virtual image is improved, but the amount of light reaching the driver is reduced
Solution Approach 1:
The windshield is designed with local quality variations: the reflection region has an opaque black background to provide high contrast for the virtual image, while other regions of the windshield remain transparent to allow light transmission. This localized application of opacity only where needed for display purposes maintains overall light transmission while achieving high image contrast.
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 provides a cost-effective and maintainable way to display information, allowing for high-contrast virtual images that can be easily updated and maintained, while minimizing the complexity and cost of replacing the windshield, and enabling efficient communication of critical vehicle status and navigation information to the driver.
Implementation Method 1
at least one image source positioned in a dashboard of the motor vehicle, which is configured to emit light rays
Implementation Method 2
The emitted light rays are reflected by a reflection region to generate a virtual image
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a motor vehicle (10) having a display system (12), comprising at least one image source (40) which is positioned in a dashboard (34) of the motor vehicle (10) and has the purpose of emitting light beams (S1), wherein a reflection area (58) extends parallel to a side edge (22) of at least one windowpane layer (18) of a windscreen (16) and which is configured to reflect light beams (S1) for generating a virtual image (54', 54''), wherein the at least one image source (40) provides at least one strip display (42) which can be switched in an exclusively unidimensional fashion, and a control device (36) of the motor vehicle (10) is configured to make available dynamic chase lighting (68') and/or a static light strip (68'') as the virtual image (54', 54'') by means of the at least one strip display (42).