Light Guide Windscreen Display to Reduce Driver Eye Movement
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Solution Overview
Problem
Existing information display systems in vehicles require frequent eye movement between the forward direction and meter devices, leading to driver fatigue.
Innovation Solution
An information display device with a standing member and a light guide member that emits light from the upper portion, reducing eye movement by projecting information directly in the driver's line of sight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If information is displayed on a meter device, then information can be transmitted to the driver, but frequent eye movement is required leading to driver fatigue
Solution Approach 1:
The patent transitions information display from the traditional horizontal plane (meter device on dashboard) to a vertical dimension by projecting information upward onto the windscreen. This dimensional change allows the driver to view information within their existing forward visual field without requiring lateral or downward eye movement, thereby resolving the contradiction between information transmission and driver fatigue.
2Loss of information
If a light guide member is arranged on a transparent windscreen, then information can be displayed in the driver's line of sight, but the light guide member may be conspicuous affecting appearance
Solution Approach 1:
The patent employs optical materials and light guide designs that are visually inconspicuous when not actively displaying information. The light guide member is constructed to blend with the transparent windscreen material, and information is displayed through subtle light projections that do not significantly alter the overall appearance or transparency of the windscreen, thus resolving the contradiction between information display visibility and aesthetic appearance.
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 solution effectively reduces eye movement, maintains a clear appearance, and optimizes information display timing based on vehicle speed and position, thereby minimizing driver fatigue.
Implementation Method 1
a light guide member that extends from an apparatus main body side toward an upper portion side of the standing member, is arranged along a predetermined portion of the standing member, and causes at least part of the upper portion side of the standing member to emit light
Data Source
AI summary
An information display device of an apparatus includes: a standing member that stands upward in front of an operation position and has a lower portion which is supported by an apparatus main body; and a light guide member that extends from an apparatus main body side toward an upper portion side of the standing member, is arranged along a predetermined portion of the standing member, and causes at least part of the upper portion side of the standing member to emit light.