Tiltable Mirror Camera Image Display for Tilt State Differentiation
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Solution Overview
Problem
Occupants of vehicles may misunderstand the external circumstances displayed on an image display apparatus when a camera housed in a tiltable mirror or housing is tilted, as the image direction changes, making it difficult to distinguish between the intended rear or front side area and adjacent areas.
Innovation Solution
The image display apparatus includes a tiltable housing with an imaging device that rotates around an inclined axis to prevent the camera from imaging the border areas, ensuring the display shows the ground or sky when tilted, and optionally uses a state sensor to execute an alert operation to notify the occupant of the tilt state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the door mirror is tilted to parry external force, then the door mirror can withstand external impact, but the camera direction changes causing the displayed image to show incorrect areas
Solution Approach 1:
The control unit receives tilt information from the tilt detection unit and uses this feedback to adjust the displayed image accordingly. When the housing is detected to be tilted, the system selects and displays an image from a different camera that corresponds to the tilted direction, ensuring the displayed image accurately represents the actual external circumstance.
Solution Approach 2:
The system changes the parameter of which image is displayed based on the tilt state. Different images are selected and displayed depending on the tilt detection results, allowing the system to adapt the displayed content to match the physical state of the housing.
2Stress or pressure
If the camera is placed at a tiltable housing, then the housing can absorb external shock, but the occupant may misunderstand the displayed image as showing the intended area
Solution Approach 1:
The tilt detection unit continuously monitors the housing tilt state and provides feedback to the control unit. Based on this feedback, the control unit dynamically selects which camera image to display, ensuring that the displayed image always corresponds to the actual direction the camera is facing, thereby maintaining reliable circumstance recognition.
Solution Approach 2:
The control unit acts as an intermediary between the tilt detection unit and the display unit. It processes the tilt information and determines which camera image should be displayed, mediating between the physical state of the housing and the visual information presented to the occupant.
3Strength
If the door mirror tilts toward the front side, then the door mirror can parry external force from the rear side, but the camera faces the wrong area causing display confusion
Solution Approach 1:
The system uses visual indicators (such as different display modes or indicators) to show the tilt state and the corresponding displayed area. This helps the occupant easily distinguish which area is actually being displayed, preventing confusion even when the housing is tilted.
Solution Approach 2:
The system provides visual feedback about the current display state based on tilt detection, allowing the occupant to understand what area is being shown without confusion.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An image display apparatus has: an imaging device (11L, 11R) that is placed at a tiltable housing (15L, 15R) and that is configured to image a rear side area (BL_area, BR_area) of a vehicle (1), the housing being allowed to rotate around a predetermined rotational axis (θL, θR) that is along a direction inclined to a yaw axis of the vehicle; and a displaying device (14) that is configured to display an external image captured by the imaging device.