Vehicle Mirror Housing Segmentation for Optical Backup
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Solution Overview
Problem
Existing vehicle display systems require significant tilting to switch between electronic and optical mirror modes, which can obstruct the driver's sight and complicate the display operation when errors occur.
Innovation Solution
A display system incorporating a display device, a reflection optical system with a last reflective member, and a shield member that can switch between shielding and unshielding states to maintain visibility and reduce tilting, allowing the system to function as an optical mirror even when the display device fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the housing is tilted significantly to switch to optical mirror mode, then the system can display alternative image when display device fails, but the driver's sight is obstructed
Solution Approach 1:
The patent divides the housing into two independent tiltable sections: the first housing portion holding the display device and the second housing portion holding the optical system. This segmentation allows the second portion to be tilted independently for optical mirror mode without requiring significant tilting of the entire housing, thus maintaining driver visibility while providing backup optical viewing capability.
Solution Approach 2:
The patent introduces adjustable tilting mechanisms for both first and second housing portions, enabling dynamic position adjustment. The first housing portion can be tilted within a first angle range while the second housing portion can be tilted within a second angle range, allowing the system to adapt between electronic display mode and optical mirror mode without fixed significant tilting that would obstruct sight.
2Adaptability or versatility
If the entire housing is tilted to switch between electronic and optical mirror modes, then the system can function as both electronic and optical mirror, but the operation becomes complicated and sight may be obstructed
Solution Approach 1:
The housing is segmented into independent tiltable portions (first housing portion for display device, second housing portion for optical system), each with independent adjustment capabilities. This allows selective tilting of only the necessary portion for mode switching, simplifying operation compared to tilting the entire housing and reducing complexity of the switching mechanism.
Solution Approach 2:
The patent implements dynamic angle adjustment for each housing portion independently - the first housing portion can be tilted within a first angle range and the second housing portion within a second angle range. This dynamic, independent adjustment allows flexible mode switching between electronic and optical mirror functions without requiring complex coordinated movement of the entire housing.
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 ensures continuous viewer visibility by reducing the need for significant tilting, maintaining sight of the front view, and providing an alternative image when display errors occur, thus enhancing operational reliability.
Implementation Method 1
The shield member in the shielding state reflects, toward the viewer's eyes, external light impinging on the housing
Implementation Method 2
The last reflective member reflects the light toward a viewer's eyes
Data Source
AI summary
A display system includes: a display device; a reflection optical system; a housing; and a shield member. The reflection optical system includes at least a last reflective member on which light, emerging from a display screen of the display device, is incident either directly or indirectly. The shield member is held by the housing to assume either a shielding state or an unshielding state. The shielding state is a state where the shield member at least partially cuts off light incident on, or reflected from, the last reflective member. The unshielding state is a state where the shielding state is canceled. The shield member in the shielding state reflects, toward the viewer's eyes, external light impinging on the housing. The housing has a holding structure to hold the shield member, no matter whether the shield member assumes the shielding state or the unshielding state.