Vehicle Lamp Assembly Selective Door Illumination
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Solution Overview
Problem
Current vehicle lamp assemblies do not effectively indicate the correct door of entry into a vehicle, especially in low-light conditions, and fail to direct occupants to vacant seats or notify nearby persons of an open door.
Innovation Solution
A lamp assembly with first and second light sources coupled to a vehicle, a controller activates these sources to selectively illuminate the front or rear doors and ground surfaces to indicate the correct door of entry, based on vehicle occupancy and environmental lighting conditions, using luminescent structures that convert excitation light into visible light for enhanced visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional lamp assemblies are used without selective illumination, then the structure is simple and energy consumption is low, but the ability to indicate correct door of entry and direct occupants is insufficient
Solution Approach 1:
The lamp assembly is divided into multiple independent light sources (first light source for front door, second light source for rear door) that can be selectively activated. Each light source is positioned to illuminate a specific door area, allowing the system to provide directional guidance information without requiring a single complex illumination system.
Solution Approach 2:
The lamp assembly pre-illuminates the door area before the occupant arrives to indicate the correct door of entry. The controller activates the appropriate light source in advance based on vehicle occupancy status, ensuring the guidance information is available when the occupant approaches the vehicle.
2Loss of information
If multiple light sources are added to indicate door entry and vacant seats, then information provision is improved, but energy consumption increases
Solution Approach 1:
The lamp assembly dynamically adjusts which light sources are activated based on real-time vehicle occupancy status. The controller selectively turns on only the light sources corresponding to doors with vacant seats, rather than illuminating all doors continuously. This dynamic adaptation ensures information is provided when needed while minimizing energy consumption during periods when guidance is not required.
Solution Approach 2:
The system changes the operational state of light sources from static (all on or all off) to dynamic (selectively on based on occupancy). The controller monitors seat vacancy parameters and adjusts the illumination state accordingly, providing guidance information only when vacant seats exist and doors need to be indicated.
3Loss of information
If light sources illuminate only the door, then the indication is clear, but visibility in low-light conditions is insufficient
Solution Approach 1:
The illumination is extended from a two-dimensional door surface to include the three-dimensional space around the door, specifically illuminating the ground surface proximate to the door. This creates a broader visual indicator that encompasses both the door location and the approach path, enhancing visibility and guidance in low-light conditions without compromising indication clarity.
4Measurement precision
If selective illumination based on occupancy is implemented, then occupant direction accuracy is improved, but control system complexity increases
Solution Approach 1:
The controller is designed to perform multiple functions: monitoring occupancy status, determining which doors have vacant seats, selecting the appropriate light sources to activate, and controlling the illumination duration. This multi-functional approach consolidates complexity into a single control unit rather than requiring separate systems for each function, making the overall system more manageable despite the increased capabilities.
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 provides clear indication of the correct door entry, directs occupants to vacant seats, and notifies nearby persons of an open door, enhancing safety and visibility in various lighting conditions.
Implementation Method 1
using luminescent structures that convert excitation light into visible light for enhanced visibility
Data Source
AI summary
A lamp assembly is provided herein. The lamp assembly includes first and second light sources operably coupled to an exterior portion of a vehicle. The first light source illuminates a front door and the second light source illuminates a rear door. A controller is configured to activate the first and second light sources to selectively illuminate the front or rear doors to indicate a predefined door of entry into the vehicle.