Variable Transmittance Door Shield for Direction Indication
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Solution Overview
Problem
Existing vehicle door systems with dimmer glass do not allow passengers to recognize the opening direction of the door, which can lead to confusion and safety issues when entering or exiting the vehicle.
Innovation Solution
A vehicle control method and device that utilize a planar light shielding member with variable light transmittance, featuring at least two regions along the door's opening direction. The light transmittance of these regions changes to indicate the door's opening direction, allowing passengers to recognize it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the window is simply switched from light shielding state to transparent state, then the light transmittance is improved, but the ability to indicate door opening direction deteriorates
Solution Approach 1:
The light shielding member is divided into multiple regions (first region, second region, third region) along the door opening direction. Each region can independently control light transmittance, allowing the system to provide both transparency and directional indication by selectively changing transmittance in different segments.
Solution Approach 2:
Different regions of the light shielding member have different light transmittance properties at different times. The first region changes from first light transmittance to second light transmittance to indicate opening direction, while other regions maintain their state, creating local quality differences that convey directional information.
2Illumination intensity
If the entire light shielding member is made transparent, then visibility is improved, but the indication of opening direction becomes indistinguishable
Solution Approach 1:
The light shielding member is segmented into multiple controllable regions. Only the first region changes light transmittance to indicate opening direction, while other regions remain in their original state, ensuring both visibility and directional indication are maintained simultaneously.
Solution Approach 2:
The system creates local quality differences by changing light transmittance only in specific regions (first region) while maintaining different transmittance states in other regions, allowing observers to distinguish opening direction without compromising overall visibility.
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 method effectively communicates the door's opening direction to passengers, enhancing safety and reducing confusion by visually indicating the direction through changes in light transmittance.
Implementation Method 1
a planar light shielding member disposed on the door and having a variable light transmittance and including at least a first region and a second region that are disposed along the first direction
Data Source
AI summary
A vehicle includes a vehicle body, a wheel group connected to the vehicle body, a door disposed on the vehicle body and opened by an actuator in a first direction, and a planar light shielding member disposed on the door, having a variable light transmittance and including at least a first region and a second region that are disposed along the first direction. When the vehicle is in a first state, the first region and the second region of the light shielding member in the door have a first light transmittance. When the vehicle is in a second state, the second region remains at the first light transmittance, and the first region has a second light transmittance larger than the first light transmittance. Thereafter, an opening operation of the door in the first direction is completed.