Vehicle Interior Lighting Control via Navigation Route Data
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Solution Overview
Problem
Existing motor vehicles lack the ability to automatically adjust the brightness of interior lighting devices based on the driving situation, which can impair the driver, especially in varying light conditions such as dusk or darkness, due to fixed or manually adjustable but not situation-dependent lighting.
Innovation Solution
A motor vehicle system where the control unit communicates with the navigation system to control lighting devices based on current and predictive route data, adjusting brightness according to the road type, and includes a quality check for route data to ensure reliable lighting control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If interior lighting brightness is increased to improve visibility and ambiance, then illumination quality improves, but driver impairment increases due to excessive brightness in low-light driving conditions
Solution Approach 1:
The patent implements dynamic brightness control of interior lighting devices based on real-time driving conditions. The control unit automatically adjusts the brightness of interior lights, reading lights, and ambient lights according to factors such as time of day, ambient light levels, and driving situation, transforming the static lighting system into a dynamic one that adapts to changing conditions to prevent driver impairment while maintaining comfort.
Solution Approach 2:
The system changes the brightness parameter of interior lighting devices based on detected driving conditions. By monitoring ambient light levels and automatically adjusting the illumination intensity of interior lighting to appropriate levels, the system prevents excessive brightness from impairing the driver while ensuring sufficient lighting for passenger comfort and visibility when needed.
2Adaptability or versatility
If manual control of lighting devices is provided to allow flexibility, then adaptability improves, but driver impairment risk increases due to potential incorrect manual adjustment in varying driving conditions
Solution Approach 1:
The patent implements a self-service lighting control system where the control unit automatically adjusts interior lighting brightness without requiring manual intervention from occupants. The system monitors driving conditions and autonomously optimizes lighting levels, eliminating the need for drivers to manually adjust lighting while ensuring appropriate brightness levels are maintained for different driving situations, thereby preventing driver impairment.
Solution Approach 2:
The system incorporates feedback mechanisms that continuously monitor driving conditions such as ambient light levels, time of day, and driving situation. Based on this feedback, the control unit automatically adjusts interior lighting brightness to optimal levels, replacing manual control with an intelligent feedback-driven system that adapts to changing conditions and prevents driver impairment while maintaining lighting flexibility.
3Adaptability or versatility
If navigation system integration is added to enable automatic lighting control, then lighting adaptability improves, but device complexity increases due to additional system integration requirements
Solution Approach 1:
The patent integrates the lighting control function with the existing navigation system, allowing the navigation system to serve multiple purposes: route guidance and interior lighting control. By utilizing the navigation system's existing sensors, processors, and data processing capabilities for both navigation and lighting control, the patent avoids the need for separate dedicated lighting control hardware, thereby reducing overall system complexity while achieving adaptive lighting control.
Data Source
AI summary
Motor vehicle comprising one or more lighting devices for interior lighting and a control unit controlling them, as well as a navigation system for determining current and/or predictive route data, wherein the control unit (3) communicates with the navigation system (4) and is designed to control the one or more lighting devices (2a, ..., 2e) depending on current and/or predictive route data transmitted by the navigation system (4).