Tilting HUD Screen Module for Large Virtual Images
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Solution Overview
Problem
Existing head-up displays face challenges in forming large virtual images while minimizing the size of the housing and maintaining a simple structure, with limited adjustability of the eye box for different drivers.
Innovation Solution
A head-up display design featuring a housing with a screen module that can be tilted and adjusted using a tilter connected to a motor, allowing the eye box to be varied, and incorporating a sensor to detect driver information for optimal positioning, along with a control board to manage the motor and screen positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the housing size is minimized, then the device compactness is improved, but the ability to form large virtual images deteriorates
Solution Approach 1:
The screen module is made rotatable about a tilting shaft, allowing dynamic adjustment of the screen's angle. This enables the system to form large virtual images by adjusting the screen orientation rather than requiring a larger housing, thus resolving the contradiction between compact housing size and large virtual image formation capability
Solution Approach 2:
The solution introduces angular adjustment as a new dimension of control. By rotating the screen module about the tilting shaft, the system exploits the angular dimension to achieve large virtual image formation without increasing the housing volume, effectively transitioning from a static to a dynamic spatial configuration
2Device complexity
If the structure is simplified, then the device complexity is reduced, but the adjustability of eye box for different drivers deteriorates
Solution Approach 1:
The tilter mechanism provides dynamic adjustment of the screen module's angle through rotation about the tilting shaft. This single dynamic degree of freedom enables eye box adjustment for different drivers while maintaining a relatively simple structural implementation, resolving the contradiction between structural simplicity and adaptability
Solution Approach 2:
The system adjusts the eye box position by changing the angular parameter of the screen module through rotation. This parameter-based adjustment approach allows adaptability for different drivers without requiring complex structural modifications, achieving versatility through simple parameter variation
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 design enables the formation of large virtual images with a minimized housing size and a simple structure, allowing for adjustable eye box positioning to accommodate different drivers, enhancing user experience and visibility.
Implementation Method 1
The image generating part may comprise a concave mirror that expands the image light onto the screen module
Implementation Method 2
a spring disposed in the outer bracket to elastically support the inner bracket
Data Source
Figure 1~2
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AI summary
The present embodiment comprises a housing having a space formed in the housing; a screen module provided with a tilting shaft and rotatably accommodated in the space; an image generating part that generates image light from outside the space and projects the generated image light onto the screen module; and a tilter that adjusts the tilting angle of the screen module, wherein the screen module is provided with a connector rotatably connected to the tilter.