Vehicle Door Leaf Light Profile for Visible Edge Illumination
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Solution Overview
Problem
Existing door leaf designs for motor vehicles and rail vehicles face challenges in integrating light sources in a cost-effective and visible manner, particularly due to soiling issues with rubber finger guards and limitations in all-glass door leaves.
Innovation Solution
A modular door leaf with a light profile on the primary closing edge, featuring a light-transmissive material and an RGB(W) LED light source that radiates into the profile for uniform light distribution, allowing easy visibility and adaptable design for complex shapes, with options for dual light sources and integrated rubber finger guards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light source is disposed on the end face of the door leaf in the area of the primary closing edge with the rubber finger guard, then the light emission can be conducted and scattered towards the observer, but the silicone may become soiled which reduces the visibility of the light emission
Solution Approach 1:
The door leaf is divided into functional modules: the light profile is integrated into the primary closing edge structure, separating the light-conducting function from the protective rubber finger guard. This modular segmentation allows the light profile to be positioned where it can effectively conduct and scatter light while the rubber finger guard maintains its protective function without being directly contaminated by soiling that would affect light visibility.
Solution Approach 2:
The light profile acts as an intermediary element between the light source and the observer. It conducts the light emission from the light source disposed on the end face and scatters it towards the observer, thereby mediating the light transmission process and enabling effective illumination while protecting the light source from direct exposure to soiling on the rubber finger guard.
2Illumination intensity
If the light source is provided above the door on an inner and/or outer side of the bus or train, then it can provide light emission, but it is not readily perceived by a passenger standing directly in front of the door
Solution Approach 1:
The light emission is redirected from a vertical position above the door to a horizontal orientation along the primary closing edge. By disposing the light source on the end face and using the light profile to conduct and scatter light along the closing edge, the illumination is positioned in a dimension that is directly visible to passengers standing in front of the door, significantly improving perceptibility.
3Area of stationary object
If all-glass door leaves are used, then a large glass front is achieved, but electrical lines and additional modules such as light sources can only be incorporated in the area of the metal frame
Solution Approach 1:
The light profile integrated into the primary closing edge serves multiple functions: it conducts light from the light source, provides structural support for the light source integration, and maintains the aesthetic and functional integrity of the all-glass door design. This multi-functional integration allows light sources to be incorporated into all-glass door leaves without compromising the large glass front area or requiring extensive modifications to the metal frame.
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 solution enhances visibility of operational states and reduces maintenance efforts by using a modular design with a light profile that conducts and scatters light emissions uniformly, maintaining clarity and reducing soiling risks while allowing for customizable geometric shapes and easy assembly.
Implementation Method 1
a light profile (26), which is disposed on the primary closing edge (21) and configured for conducting and scattering the light emission of the light source (30)
Implementation Method 2
configured for conducting and scattering the light emission of the light source
Data Source
AI summary
A door leaf, in particular for motor vehicles and rail vehicles, door leaf includes a main closing edge, wherein a light source is located on the main closing edge. A light profile is located on the main closing edge and is designed to guide and scatter a light emission from the light source.