Vehicle Roof-Liner Work Lighting With State-Based Auto Shutoff
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Solution Overview
Problem
Vehicle interior lighting systems do not provide conditions comparable to office lighting and typically require manual activation/deactivation, which can influence users and compromise comfort.
Innovation Solution
A closed-loop lighting system with lamp devices in the vehicle's interior roof lining, coupled to a closed-loop vehicle control device, automatically adjusts illumination based on vehicle state information, such as speed, to enhance user comfort by terminating or reactivating lighting as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual activation and deactivation of lighting is implemented, then user control is improved, but user comfort deteriorates due to light emissions influencing the user
Solution Approach 1:
The lighting system automatically activates and deactivates based on detected user presence and state, eliminating the need for manual operation. The system serves itself by using sensors to detect when the user is present, asleep, or engaged in activities like reading, and automatically adjusts lighting accordingly, thus preventing light emissions from influencing the user while maintaining user comfort
Solution Approach 2:
The system continuously monitors user state through sensors (motion detection, ambient light sensors, possibly biometric sensors) and adjusts lighting in real-time based on the detected state. This closed-loop feedback mechanism ensures lighting is appropriate for the user's current activity or state, preventing harmful light emissions while maintaining ease of use
2Object-affected harmful factors
If automatic termination of illumination based on vehicle state information is implemented, then user comfort is improved, but device complexity increases
Solution Approach 1:
The lighting control device leverages existing vehicle state information (ignition status, speed data from the vehicle's control network) that is already being collected for other vehicle functions. By reusing this existing data infrastructure, the system achieves automatic lighting termination without adding significant complexity, as it builds upon already-present sensors and communication protocols in the vehicle
Solution Approach 2:
The lighting control functionality is integrated with the vehicle's existing control systems and communication networks. The lighting control device communicates with the vehicle's control network to receive state information, merging the lighting control function with the vehicle's overall control architecture rather than creating a completely separate system, thus reducing overall complexity
3Illumination intensity
If lighting system is continuously activated to provide office-like conditions, then illumination quality is improved, but energy consumption increases
Solution Approach 1:
The lighting system dynamically adjusts its operation based on real-time detection of user presence and activity state. Instead of continuous activation, the system transitions between different states (off, dimmed, full illumination) depending on whether the user is present, engaged in work activities, or asleep. This dynamic adaptation maintains high illumination quality when needed while significantly reducing energy consumption during periods when full lighting is not required
Data Source
AI summary
A lighting system for a vehicle having at least one lamp device arranged in the region of an interior roof lining of the vehicle. The at least one lamp device is arranged such that a work region is defined by at least a first vehicle row of the vehicle is illuminable by the at least one lamp device. The lighting system comprises a closed-loop lighting system control device which is coupled to a closed-loop vehicle control device of the vehicle and configured to receive vehicle state information from the closed-loop vehicle control device. The lighting system is configured, in a lighting mode of the lighting system, to automatically terminate an illumination of the work region on the basis of received vehicle state information.