Motor Vehicle Lighting Device with Layered Light-Guiding Elements
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Solution Overview
Problem
Motor vehicle interior lighting devices lack the ability to create a high three-dimensional depth effect and effectively convey visual information or warnings to occupants, which is crucial for modern assistance systems.
Innovation Solution
A lighting device comprising at least two plate-shaped, partially transparent light-guiding elements stacked in layers, held by a frame device that optically couples light from a source into and out of the elements, with structural elements that scatter or refract light to create a three-dimensional effect, allowing for efficient light coupling and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional interior lighting devices are used, then the lighting function is provided, but the ability to create a high three-dimensional depth effect and convey visual information is lacking
Solution Approach 1:
The patent applies dimensionality change by stacking multiple light-guiding elements (at least two) in layers parallel to each other, creating a three-dimensional arrangement. This layered structure with perpendicular bisectors on a common straight line transforms a conventional two-dimensional lighting surface into a three-dimensional light display system, enabling depth effect and enhanced visual information transmission without proportionally increasing device complexity
Solution Approach 2:
The lighting device is segmented into multiple independent light-guiding elements (plates or sheets) that can be stacked in layers. Each element can be independently optically coupled and contains light-scattering or light-refracting areas that create the three-dimensional effect. This segmentation allows modular assembly and maintenance while achieving the desired visual information transmission
2Loss of information
If multiple light-guiding elements are stacked to create three-dimensional effect, then visual information transmission is enhanced, but light coupling efficiency may be reduced
Solution Approach 1:
The patent merges the functions of multiple light-guiding elements into a single integrated lighting system where all layers are optically coupled to the same light source through a frame device. The light source, frame device, and multiple light-guiding elements form a unified optical system that efficiently distributes light across all layers, maintaining high light coupling efficiency while achieving enhanced visual information transmission through the three-dimensional arrangement
3Stability of the object's composition
If a frame device holds multiple light-guiding elements, then structural stability is provided, but the frame device must also perform light coupling function
Solution Approach 1:
The frame device is designed with multi-functionality, serving both as the structural support that holds the multiple light-guiding elements in their stacked arrangement and as the light coupling mechanism that optically connects the light source to all light-guiding elements. This universal design eliminates the need for separate structural and optical components, reducing overall device complexity while maintaining structural stability and efficient light distribution
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 achieves a high three-dimensional depth effect and enables the use of interior vehicle surfaces for visual warnings and information, enhancing driver and passenger awareness through a visually engaging and energy-efficient lighting system.
Implementation Method 1
light is coupled from the light source into the frame means and from the frame means into the light guide elements and directed out of the light guide elements
Implementation Method 2
at least two plate-shaped, at least partially light-scattering or light-refracting light-guiding elements
Implementation Method 3
at least two plate-shaped, at least partially light-scattering or light-refracting light-guiding elements
Data Source
Figure 1~5
AI summary
A lighting device for a motor vehicle is to be provided with which a special optical depth effect can be achieved. For this purpose, a lighting device is proposed comprising a light source (2) and at least two plate-shaped, semi-transparent light-guiding elements (3), as well as a frame (1) that holds the at least two light-guiding elements (3) together at a common perpendicular center and at least partially surrounds them at their edges. The frame (1) guides light and is optically coupled to the light source (2). Light from the light source (2) is coupled into the frame (1) and from the frame (1) into the light-guiding elements (3), and is also directed outwards from the light-guiding elements (3).