Vehicle Backlighting PCB and Light Guide Layout for Adaptive Illumination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vehicle lighting systems lack dynamic and adaptive functionality to respond to driver actions and environmental changes, such as fatigue detection or external events, and fail to provide effective ambient and functional illumination that is both aesthetically pleasing and safety-enhancing.
Innovation Solution
A backlighting device comprising a printed circuit board, light guide body, and light sources, which directs light laterally into a light guide body to create dynamic lighting scenarios, integrated with sensors and cameras to adjust illumination based on vehicle operations and external conditions, using LEDs and diffuser foils to achieve uniform and adaptive lighting effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional lighting system is used, then the structure is simple, but it lacks dynamic and adaptive functionality to respond to driver actions and environmental changes
Solution Approach 1:
The lighting assembly is designed to perform multiple functions: it provides ambient illumination, functional lighting for specific areas (glove box, storage compartments), safety warnings for driver fatigue detection, and aesthetic lighting scenarios. This multi-functionality allows a single system to replace multiple separate lighting systems, achieving adaptability without proportionally increasing complexity
Solution Approach 2:
The lighting system transitions from static to dynamic operation through sensor integration (cameras, microphones, sensors) that enable real-time detection of driver actions, environmental conditions, and external events. The system dynamically adjusts illumination intensity, color, and distribution based on detected conditions, such as activating specific lighting scenarios when driver fatigue is detected or when external events occur
2Adaptability or versatility
If multiple lighting components are added to achieve dynamic lighting scenarios, then the adaptability improves, but the weight and installation space increase
Solution Approach 1:
Multiple lighting components (light guides, diffusers, LEDs) are merged into an integrated assembly mounted on a single printed circuit board. The light guide bodies are positioned adjacent to each other with overlapping areas that illuminate segments of the PCB, creating a unified structure that achieves complex lighting scenarios without requiring separate mounted components, thereby minimizing weight and installation space
3Illumination intensity
If traditional lighting components are used, then the installation space is minimized, but the lighting uniformity and aesthetic effect are insufficient
Solution Approach 1:
The lighting system employs local quality variations through different light guide body configurations, diffuser placements, and LED positioning to achieve optimal illumination in specific areas. Each light guide body is designed to illuminate particular segments of the PCB with controlled intensity and distribution, creating uniform yet aesthetically pleasing lighting effects in different zones (glove box, storage compartments, dashboard areas) without requiring uniform components throughout
Solution Approach 2:
The patent utilizes the third dimension by positioning light guide bodies adjacent to each other with overlapping illumination areas that extend across multiple PCB segments. This spatial arrangement in three dimensions allows a compact configuration to produce extensive and uniform lighting coverage across the vehicle interior surfaces, achieving broad illumination from a small installation volume
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 a versatile and adaptive lighting system that enhances safety, ambiance, and functionality within the vehicle, automatically adjusting to driver states and external events, while minimizing weight and installation space through the use of a lightweight printed circuit board and flexible design.
Implementation Method 1
The light guide body redirects the light emitted by the light source laterally into a light guide body
Implementation Method 2
The printed circuit board blocks the light emitted by the light source so that it is deflected to the light guide body
Implementation Method 3
using LEDs and diffuser foils to achieve uniform and adaptive lighting effects
Data Source
AI summary
The invention refers to a backlighting device for a (1) lighting assembly of a vehicle. The backlighting device comprises at least one printed circuit board and at least one light guide body. The light guide body receives the light, emitted by a light source. The printed circuit board blocks and deflects the light emitted by the light source to the light guide body. The printed circuit board has at least one opening to receive the light guide body.