Vehicle Speed Projection Display Control Device
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Solution Overview
Problem
Conventional display control devices do not provide vehicle speed information on the road surface, making it difficult for drivers to recognize their vehicle's speed and speed limits without diverting their attention.
Innovation Solution
A display control device mounted on a vehicle, equipped with a speed information obtaining means, irradiating means, and display control means, which projects vehicle speed information onto the road surface, allowing drivers to easily recognize their current speed and speed limits without changing their line of sight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If vehicle speed information is displayed on the road surface, then driver awareness of speed and speed limits is improved, but driver distraction may increase
Solution Approach 1:
The patent projects speed information from the traditional two-dimensional dashboard display onto the three-dimensional road surface, creating a spatial extension of the information display. This allows drivers to view speed information in their natural forward field of view without diverting attention from the road ahead.
Solution Approach 2:
The road surface acts as an intermediary medium between the vehicle's speed sensors and the driver's visual perception. By using the road surface as a projection canvas, the system delivers speed information directly in the driver's line of sight without requiring attention shifts to traditional displays.
2Device complexity
If conventional display devices are used, then device simplicity is maintained, but vehicle speed information cannot be displayed on the road surface
Solution Approach 1:
The patent extends the functionality of existing display systems to include road surface projection capability. The display control device can now serve multiple purposes: traditional dashboard display and road surface projection display, making the system versatile without requiring complete redesign.
Solution Approach 2:
The patent replaces traditional mechanical display mechanisms (dashboard instruments, physical gauges) with optical projection technology. This substitution enables speed information to be displayed on the road surface by projecting light patterns that represent speed data, fundamentally changing how speed information is presented to drivers.
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 safer driving by providing immediate and continuous display of vehicle speed and speed limits on the road, reducing driver distraction and improving awareness of critical driving information.
Implementation Method 1
The irradiating means irradiates (or the projection means projects) an image in order to display the vehicle speed information on the road on which the driver's vehicle drives
Data Source
AI summary
A light ECU in a light control device performs a display process of obtaining speed limit information at a current position of the driver's vehicle on a road and of instructing a pixel light system to display the speed limit information on the surface of the road. The light control device can project the speed limit information for the drivers vehicle onto the road. Further, the light control device judges whether or not the vehicle speed information is not less than a predetermined reference speed, and performs the process of displaying the vehicle speed information on the road only when the vehicle speed information is not less than a predetermined reference speed. The above control process displays the vehicle speed information on the road only when necessary, allows the driver of the vehicle only to recognize important information, and provides the driver of the vehicle with safer driving conditions.