Windshield Head-Up Display Layout for Low-Distraction Driving
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Solution Overview
Problem
Existing motor vehicles face challenges in providing essential driving information to the driver without causing distraction, while minimizing the need for continuous gaze shifts and maintaining aerodynamic efficiency.
Innovation Solution
A head-up display system is integrated into the windshield, eliminating the control panel and rear-view mirrors, using miniature projectors to project driving information and peripheral images directly onto the windshield, allowing the driver to view this information without looking away and reducing aerodynamic resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a control panel with instruments is arranged on the dashboard for the driver to view, then the driver can access driving information, but the driver must continuously change the orientation of the look, causing distraction
Solution Approach 1:
The patent transitions the display dimension from a horizontal dashboard surface to a vertical windshield surface. This dimensional change allows information to be presented in the driver's forward field of view, eliminating the need to shift gaze horizontally to the dashboard while maintaining information accessibility.
Solution Approach 2:
The patent introduces a head-up display system with projection unit and mirror as an intermediary between the driver and the driving information. This intermediary projects virtual images onto the windshield, serving as a mediator that delivers information without requiring the driver to physically turn or shift attention to a separate control panel.
2Loss of information
If traditional rear-view mirrors are used to provide peripheral vision, then the driver can see behind the vehicle, but the mirrors increase aerodynamic resistance
Solution Approach 1:
The patent extracts the rear-view mirror components from the vehicle structure and replaces them with a camera-based detection system. This extraction removes the aerodynamic obstruction while preserving the essential function of providing rearward visual information through electronic imaging displayed on the windshield.
Solution Approach 2:
The patent substitutes the mechanical mirror system with an optical-electronic system consisting of cameras, processors, and display elements. This replacement eliminates the physical mirror structures that create aerodynamic drag while maintaining the information-providing function through electronic image processing and display.
3Loss of information
If a comprehensive control panel is provided to display all driving information, then the driver has access to all necessary data, but the device complexity increases
Solution Approach 1:
The patent creates a universal display system on the windshield that can present multiple types of information (speed, navigation, warnings, media control) through a single integrated head-up display interface. This multi-functional approach consolidates what would otherwise require separate instruments and controls into one unified system, reducing overall complexity.
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 system ensures safe and efficient delivery of driving information, reduces driver distraction, and enhances aerodynamic performance by eliminating the control panel and rear-view mirrors.
Implementation Method 1
a plurality of mirrors arranged so as to reflect the light beam onto a windshield
Implementation Method 2
The windshield deflects the light beam. The mirrors and the windshield form, in known solutions, an optical system configured to form a virtual image on the outside of the windshield
Data Source
AI summary
A motor vehicle comprising a passenger compartment defining a seat for a driver, a dashboard arranged within the passenger compartment, delimiting the passenger compartment at the front with reference to a normal forward moving condition of the motor vehicle and arranged in front of the seat; a windshield delimiting the passenger compartment and contiguous with the dashboard; and a head-up display configured to form at least one virtual image containing an item of information associated with an operating state of the motor vehicle on a first region of the windshield; the dashboard comprises a second region contiguous with the windshield; the head-up display comprises at least one projector housed in the second region and the first region delimits the windshield on the side of the dashboard.