Angled Screen Mounting for Vehicle HUD Vibration Control
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Solution Overview
Problem
Existing display systems for mobile objects, such as vehicles, face challenges in maintaining image quality and reducing footprint while minimizing disruption from vibrations and sunlight-induced heat, which can degrade the image quality.
Innovation Solution
A display device configuration that includes a light source, image former, screen, housing, and holding member, where the screen is attached to the housing with a normal direction intersecting the vertical and front-and-rear directions of the mobile object, allowing for improved image quality and reduced footprint, and featuring a removable screen unit to manage heat and vibrations effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the screen is held by the holding member attached to the housing with the normal direction intersecting the vertical and front-and-rear directions, then image quality is improved by reducing vibration disruption, but the device complexity increases due to the specific mounting configuration
Solution Approach 1:
The holding member is designed to hold the screen in a specific orientation where the normal direction of the screen surface intersects with both the vertical direction and the front-and-rear direction of the mobile object. This dynamic orientation configuration optimizes the screen's position to minimize vibration disruption while maintaining image quality, resolving the contradiction between improved manufacturing precision and increased device complexity.
2Area of stationary object
If the width of the housing is made narrower than the width of the holding member, then the footprint is reduced, but the ease of operation deteriorates due to tighter space constraints
Solution Approach 1:
The display device is divided into separable components including the housing, holding member, and screen assembly. The holding member can be detached from the housing, allowing for easy assembly and maintenance operations despite the narrow footprint. This segmentation enables the device to maintain a compact form factor while preserving ease of operation during assembly and servicing.
3Ease of repair
If the screen unit is made removable, then the ease of repair is improved, but the device complexity increases due to additional attachment and detachment mechanisms
Solution Approach 1:
The holding member is designed with dynamic attachment and detachment capabilities, allowing the screen unit to be easily removed and reattached. This dynamic design provides simple attachment mechanisms that enable easy repair and replacement of the screen while maintaining a relatively simple overall structure, thus resolving the contradiction between ease of repair and device 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 solution enhances image quality by reducing vibrations' impact and managing heat from sunlight, thereby maintaining image clarity and productivity while minimizing space occupation in mobile objects.
Implementation Method 1
a front windshield configured to reflect the image light
Implementation Method 2
The screen through which the image light diverges projects the image light
Data Source
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Figure 4
AI summary
A display device and a mobile object. The display device (10) is installable in a mobile object (1A), and includes a light source (11), an image former (13) configured to receive light emitted from the light source (11) and output image light that forms an image, a screen (15) on which the image light forms the image, a housing (10A) that houses the light source (11) and the image former (13), and a holding member (300) configured to hold the screen (15). The holding member (300) is attached to the housing (10A) with a normal direction of a surface of the screen (15) intersecting with a vertical direction and with a front- and-rear direction of the mobile object (1A). A width of the housing (10A) is narrower than a width of the holding member (300). The mobile object (1A) includes the display device (10), a front windshield configured to reflect the image light; and an image-forming optical system configured to project the image light projected from the screen (15) toward the front windshield. The screen (15) through which the image light diverges projects the image light.