Vehicle HUD Integrating Windshield Projection and Instrument Panel Display
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Solution Overview
Problem
Conventional head-up display (HUD) units struggle to effectively present both projected and displayed images to vehicle occupants while maintaining space-saving and design considerations, particularly in integrating multiple display methods without compromising the smooth surface and attractive appearance of the instrument panel.
Innovation Solution
A dual-display system comprising a first display section projecting images onto the windshield and a second display section displaying images directly to the occupant, with controlled light directions and integrated into the instrument panel's surface, allowing for side-by-side image presentation and enhanced information delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional HUD unit projects images onto the windshield, then the driver can visually recognize the projected image, but it is difficult to simultaneously display additional images without adding separate display units that compromise space saving and design
Solution Approach 1:
The instrument panel is designed to perform multiple functions: it serves as both a structural component of the vehicle interior and a display device. The display unit is integrated into the instrument panel, allowing the same structure to provide both information display and structural support, thereby eliminating the need for separate display units and maintaining space-saving design.
Solution Approach 2:
The display unit and instrument panel are merged into a single integrated structure. The display unit is positioned within the instrument panel and utilizes the instrument panel's surface and structure, combining what would traditionally be separate components into one unified system that achieves both display functionality and aesthetic design.
2Adaptability or versatility
If a display unit is added to the instrument panel, then additional images can be displayed to the occupant, but the smooth surface and attractive appearance of the instrument panel may be compromised
Solution Approach 1:
The instrument panel surface is designed with different local qualities: the display unit area has a different surface characteristic (with holes or openings) compared to the surrounding areas. The holes are strategically positioned and sized to allow light transmission for display functionality while maintaining the overall smooth aesthetic appearance when the display is not in use.
Solution Approach 2:
The instrument panel surface utilizes optical properties to change its appearance based on display state. When the display is active, light passes through the holes to illuminate the displayed information; when inactive, the holes are less noticeable, maintaining the smooth surface appearance. This optical switching effect allows the surface to adapt its visual characteristics.
3Adaptability or versatility
If multiple display methods are integrated into a single HUD unit, then both projected and displayed images can be presented to the occupant, but the device complexity increases
Solution Approach 1:
The display system is segmented into two distinct functional modules: a projection unit for projecting images onto the windshield and a display unit for directly displaying images on the instrument panel. This segmentation allows each module to be optimized for its specific function while being integrated into a single HUD system, managing complexity through functional separation.
Solution Approach 2:
The instrument panel serves as an intermediary structure that hosts the display unit and facilitates its integration into the vehicle interior. The panel's design with holes and specific surface characteristics mediates between the display functionality and the aesthetic requirements, enabling the display unit to be integrated without compromising the overall design.
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
Enables effective presentation of both projected and displayed images, improving driver awareness and safety by providing multiple display methods with a sleek, integrated design that maintains the instrument panel's smooth appearance and increases design freedom.
Implementation Method 1
the first image irradiated from the first display section, reflected by the windshield and visually recognized by the occupant
Data Source
AI summary
An HUD unit is equipped with a first display and a second display. The light irradiating directions of the first display and the second display are adjusted so that the first image irradiated from the first display, reflected by the front window of a vehicle and visually recognized by the driver of the vehicle and the second image irradiated from the second display to the eye point of the driver and visually recognized by the driver are visually recognized in a state of being arranged side by side.