Vehicle Seat Lighting Device with Non-Parallel Light Sources
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Solution Overview
Problem
Current individual lighting devices for vehicle seats in civil aviation, such as those in airplanes, face challenges in robustness and reliability due to manual adjustment mechanisms that are subjected to high stress and frequent use, leading to increased costs and bulkiness.
Innovation Solution
A lighting device with multiple light sources that can adjust light intensity independently, where each source emits in a unique direction, with non-parallel favored directions and intersecting beams, controlled by a dedicated electronic unit with a passenger interface offering automatic and manual modes for optimal lighting adjustment without the need for a positioning mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual adjustment mechanism is used to rotate and translate the light source, then the direction of light can be adjusted to meet passenger needs, but the mechanism becomes bulky and costly due to the need for high robustness and reliability under civil aviation stresses
Solution Approach 1:
The patent replaces the mechanical adjustment mechanism with an electronic control system that independently adjusts the light intensity of multiple fixed light sources. Instead of physically moving a single light source using mechanical components, the system uses electronic control to vary the intensity of each light source, thereby eliminating the need for bulky mechanical mechanisms while maintaining the ability to adjust lighting direction and intensity.
Solution Approach 2:
The patent divides a single adjustable light source into multiple fixed light sources (at least two, preferably three or more) arranged in different directions. Each light source is controlled independently by an electronic controller that can adjust its intensity separately. This segmentation allows the system to achieve directional lighting adjustment without mechanical movement, as the controller selectively activates and intensifies specific light sources based on the desired lighting direction.
2Reliability
If a robust manual adjustment mechanism is designed to withstand frequent manipulation by many passengers, then reliability under civil aviation stresses improves, but the mechanism becomes more bulky and expensive
Solution Approach 1:
The patent eliminates the mechanical adjustment mechanism entirely and replaces it with an electronic control system. The light sources are fixed in position and controlled electronically through intensity modulation. This substitution removes the need for robust mechanical components that would require frequent manual adjustment, thereby improving reliability while reducing bulkiness and cost.
Solution Approach 2:
The patent transitions from a static mechanical mechanism to a dynamic electronic control system. The electronic controller can continuously and independently adjust the intensity of each light source in real-time based on passenger input or automatic sensing, providing dynamic lighting adjustment without any mechanical movement or wear-prone components.
3Adaptability or versatility
If multiple light sources with non-parallel favored directions are arranged to provide adjustable lighting, then lighting flexibility improves, but the device complexity increases
Solution Approach 1:
The patent segments the lighting function into multiple independent light sources arranged in different directions (at least two, preferably three or more with non-parallel favored directions). Each light source is controlled independently by the electronic controller, which can adjust the intensity of each source separately. This segmentation provides comprehensive directional lighting coverage while keeping each individual component simple and the overall system manageable.
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 robustness and passenger comfort by allowing precise and robust lighting adjustments without mechanical stress, reducing costs and maintaining a compact design while ensuring reliable operation.
Implementation Method 1
a plurality of light sources having an adjustable light intensity and each emitting in a favored direction
Data Source
AI summary
The invention relates to an individual lighting device (20) for a vehicle seat including: a plurality of light sources (S1, S2, S3) having an adjustable light intensity and each emitting in a favored direction (D1, D2, D3), at least two sources being arranged so that the directions (D1, D2, D3) of those two sources are not parallel.