Vehicle HUD Reflecting Member Rotation Control
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Solution Overview
Problem
Existing head-up display (HUD) devices for vehicles face challenges in adjusting the display position to accommodate different driver eye points without increasing device costs, leading to potential partial missing or invisible display images for drivers with unique settings.
Innovation Solution
A vehicle display device with an adjustable reflecting member, rotating mechanism, reflection angle data storage, and control system that automatically adjusts the reflection angle within a predetermined range to ensure the display image remains visible across the driver's eye range, eliminating the need for additional positional relation display means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a positional relation display means is added to display the positional relation between the reflection point and eye range, then the ease of adjusting the reflecting member is improved, but the device complexity and cost increase
Solution Approach 1:
The system uses the existing display source to serve dual purposes: both displaying the virtual image and displaying the positional relation information during adjustment. The display source itself performs the adjustment support function without requiring separate display means, achieving self-service and eliminating additional components.
Solution Approach 2:
The display source is made multi-functional by enabling it to display both the virtual image and the positional relation between the reflection point and eye range. This universal approach allows one component to fulfill multiple functions, avoiding the need for separate positional relation display means.
2Adaptability or versatility
If the reflecting member is adjusted to accommodate a new driver's eye point, then the adaptability is improved, but the time required for adjustment increases
Solution Approach 1:
The system provides real-time feedback by displaying the positional relation between the reflection point and eye range on the display source. This visual feedback allows the driver to understand the current adjustment state and make informed adjustments, reducing trial-and-error time and enabling faster adaptation to different drivers' eye points.
Solution Approach 2:
The system displays the positional relation information before the adjustment is complete, allowing the driver to anticipate the effect of upcoming adjustments. This preliminary information provision helps the driver make more efficient adjustment decisions and reduces overall adjustment time.
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 allows drivers to easily recognize and adjust the display position without additional cost, ensuring the entire image is visible by rotating the reflecting member within the adjustable range, thus preventing partial visibility issues.
Implementation Method 1
a reflecting member, a reflection angle of which is adjustable so as to reflect a display light of an image displayed by the display source toward a point within an eye range
Data Source
AI summary
A display device for a vehicle is provided, by which a driver of the vehicle is free from a trouble of adjusting a display position of the virtual image without cost-up of the device. When the support start detecting means detects a support start timing of adjusting a reflection angle, for example, a timing of an operation of an operation switch or a start of an operation, the rotation control means controls the rotating means so that the reflecting member having a reflection angle indicated by the reflection angle data stored in the reflection angle data storing means is (a) rotated within an adjustment supporting range on a condition that the reflecting member is reflecting the display light from the display source and (b) returned to a reflection angle indicated by the reflection angle data.