Vehicle Cabin Wayfinding Assembly with Directional Reflectors
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Solution Overview
Problem
Passengers often struggle to find their seats in vehicle cabins due to the lack of easily discernable clues, leading to extended boarding times and potential delays.
Innovation Solution
A vehicle cabin wayfinding assembly that includes a placard with directional reflectors shaped as wayfinding indicia, which reflect light from a separate light source into a defined application zone, increasing light intensity within the aisle and maintaining it outside, allowing passengers to intuitively locate their seats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional flat plastic placards with printed seat numbers are used, then the device complexity is low and manufacturing is simple, but passengers cannot easily notice or discern the seat information, leading to extended boarding time
Solution Approach 1:
The patent applies reflective materials that change their optical properties based on light interaction. The sign uses retroreflective or directional reflective coatings that appear bright when illuminated by overhead lights but remain dark in other conditions, creating a dynamic visual effect that captures passenger attention without requiring active lighting components.
Solution Approach 2:
The patent changes the optical parameters of the sign by using materials with specific reflective properties. The sign's reflectivity and brightness are modified through specialized coatings that enhance visibility under cabin lighting conditions while maintaining low complexity in the overall structure.
2Ease of operation
If unlit flat placards are used, then energy consumption is minimal and the structure is simple, but the seat information is not readily discernable, causing passengers to take longer to find their seats
Solution Approach 1:
The sign uses passive reflective materials that automatically respond to ambient cabin lighting without requiring external power sources. The retroreflective or directional reflective coatings cause the sign to illuminate itself when overhead lights are on, eliminating the need for separate lighting systems while maintaining high visibility.
Solution Approach 2:
The patent introduces reflective coatings as an intermediary between the ambient light and the passenger's view. These coatings act as a mediator that captures overhead lighting and redirects it toward passengers, enhancing visibility without requiring the sign to generate its own light.
3Illumination intensity
If the sign reflects light uniformly in all directions, then the light distribution is even, but the light intensity is dispersed and not concentrated enough to attract passenger attention quickly
Solution Approach 1:
The patent applies directional reflective properties to specific zones of the sign, concentrating reflected light into targeted beams that project into the aisle. Different portions of the sign have optimized reflector angles to direct light toward approaching passengers, creating localized high-intensity zones rather than uniform dispersion.
Solution Approach 2:
The patent uses curved or angled reflective surfaces instead of flat ones. The reflectors are shaped with specific geometries (such as concave surfaces or angled planes) that focus and concentrate reflected light into directed beams, increasing intensity in specific directions while reducing dispersion.
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 enables quick and efficient boarding by ensuring that passengers can easily notice the seating information as they approach their designated area, reducing boarding time and enhancing the overall efficiency of the passenger boarding process.
Implementation Method 1
the at least one directional reflector is configured to directionally reflect light that is emitted from the light source into an application zone
Data Source
Figure 1
Figure 2A~2B
Figure 3~4
AI summary
A vehicle cabin wayfinding assembly is configured to be secured within an internal cabin of a vehicle. The vehicle cabin wayfinding assembly may include a placard 102 having a front face 106, and at least one directional reflector 104 offset from the front face of the placard. The directional reflector(s) defines one or more indicia 104a-104d, and is configured to directionally reflect light that is emitted from a light source 218 into an application zone.