Rotatable Rearview Mirror Displaying Vehicle Permits
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Solution Overview
Problem
Stickers or tags on a vehicle's front glass obstruct the driver's field of vision, necessitating a solution that can perform the same functions without physical attachment.
Innovation Solution
A vehicle equipped with a rotatable rearview mirror that converts into a display mode to show images such as parking permits or handicapped identity cards, using a motor for rotation and a controller to switch between mirror and display modes based on vehicle position and user input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If stickers or tags are attached on the front glass to display information (parking permit, pass, handicapped identity card), then the information display function is achieved, but the driver's field of vision is obstructed
Solution Approach 1:
The patent uses a camera to capture images of information (parking permit, pass, handicapped identity card) and displays these images on the rearview mirror instead of using physical stickers or tags on the front glass. This copying approach eliminates the need for physical attachments that obstruct vision while preserving the information display function.
Solution Approach 2:
The patent replaces the mechanical system of physical stickers/tags with an electronic display system consisting of a camera, controller, and rearview mirror display. This substitution eliminates the visual obstruction caused by physical attachments while maintaining the information display capability.
2Adaptability or versatility
If the rearview mirror is made rotatable to provide display mode, then the functionality is enhanced to show information, but the device complexity increases
Solution Approach 1:
The patent designs the rearview mirror to serve multiple functions: traditional rearview reflection and information display. By making the mirror rotatable and capable of switching between mirror mode and display mode, a single component performs multiple functions that would otherwise require separate devices, thereby enhancing versatility without proportionally increasing complexity.
Solution Approach 2:
The patent makes the rearview mirror dynamically adjustable by incorporating a rotation mechanism that allows the mirror to switch between facing the driver (mirror mode) and facing the front glass (display mode). This dynamic capability enables the system to adapt its function based on operational needs, integrating complexity only when necessary for functionality.
3Loss of information
If the room mirror is rotated toward the front glass to display images, then the information is visible to the driver, but the mirror cannot perform its traditional rearview function simultaneously
Solution Approach 1:
The patent implements periodic switching between mirror mode and display mode. The rearview mirror alternates between facing the driver for rearview reflection and facing the front glass for information display, with the controller managing the timing and duration of each mode. This periodic action allows both functions to be performed sequentially, ensuring information visibility while maintaining the ability to perform traditional rearview functions when needed.
Solution Approach 2:
The patent uses dynamic control to switch the mirror's orientation and function based on operational requirements. The rotation mechanism allows the mirror to dynamically adjust its position between facing the driver and facing the front glass, enabling the system to adapt between mirror mode and display mode as needed, thus maintaining both functions' availability.
Data Source
AI summary
A vehicle includes a room mirror provided to be rotatable and providing a display mode, and a memory for storing an image capable of being displayed on the room mirror in the display mode, wherein, when the room mirror is rotated toward a front glass, the room mirror is converted into the display mode and displays the image stored in the memory.