HUD Cover Segmentation for Object Containment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Head-up display (HUD) systems in vehicles face degradation of display quality due to objects adhering to the cover, which can block light or cause image distortion, especially when the object is liquid or moved by wind/vibration, leading to reduced visibility and image quality.
Innovation Solution
A projection display device with a movable separation member that divides the cover's surface into regions, driven by a unit that detects objects and retracts when none are present, preventing object movement and maintaining image clarity by separating the cover when an object is detected and removing it using a blower or air suction mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cover is provided to close the opening portion of the housing, then protection against foreign objects is improved, but display quality deteriorates when objects adhere to the cover and are moved by wind or vibration
Solution Approach 1:
The cover surface is divided into multiple regions by separation members, isolating adhered objects to specific zones and preventing them from moving across the entire cover surface, thereby maintaining display quality while retaining protection functionality
Solution Approach 2:
The separation members are made movable to dynamically respond to object adhesion events, allowing the system to adapt its configuration based on operational conditions rather than maintaining a fixed static structure
2Ease of operation
If the shutter is retracted from the opening portion when in use, then ease of operation is improved, but protection against falling objects deteriorates
Solution Approach 1:
The opening portion is divided into multiple regions by separation members, allowing the system to provide localized protection in specific areas while maintaining overall operational accessibility and ease of use
3Device complexity
If no separation mechanism is provided, then device complexity is reduced, but display quality deteriorates when objects move on the cover surface
Solution Approach 1:
The separation members are implemented as thin, flexible structures that can be easily integrated into the existing cover design, providing the necessary functional separation without significantly increasing overall device complexity or bulk
Data Source
AI summary
An HUD includes a housing that accommodates a light modulation unit that spatially modulates light emitted by a light source; a projection optical system that is accommodated in the housing and projects the light that has been spatially modulated onto a windshield 2 through an opening portion K of the housing; a cover that closes the opening portion K; a separation member that is movable and is for separating a front surface of the cover into a plurality of regions; a driving unit; and an object detecting unit that detects an object approaching the front surface of the cover. The driving unit moves the separation member to a position on the cover to separate the cover into a plurality of regions when the object detecting unit detects an object, and leaves the separation member retracted from the position on the cover when an object is not detected.