Instrument Panel Lighting Layout for Wide Door Trim Projection
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Solution Overview
Problem
Existing vehicle interior lighting devices struggle to project light over a large area of the door trim, as the light source is typically installed on the door trim itself, limiting the coverage area.
Innovation Solution
A vehicle interior lighting device with a light source installed on the instrument panel, allowing for a longer distance to the door trim, enabling projection of light over a larger area and creating a dynamic pattern that changes with the door's opening angle, along with a controller to manage light duration and color.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the light source is installed on the door trim itself, then the lighting device is simple in structure, but the light projection area is limited and cannot cover large areas
Solution Approach 1:
The light source is extracted from the door trim and relocated to the instrument panel. This allows the light to be projected from a greater distance and at different angles, significantly expanding the light projection area on the door trim while maintaining structural simplicity through the use of existing vehicle components.
Solution Approach 2:
The instrument panel serves as an intermediary structure that hosts the light source at an optimal position for projecting light onto the door trim. This intermediary location enables broader light coverage without requiring direct mounting on the door trim, thus expanding the effective lighting area.
2Area of stationary object
If the light source is installed on the instrument panel, then the light projection area is expanded, but the distance to the door trim increases which may reduce illumination intensity
Solution Approach 1:
The lighting system employs multiple light sources positioned at different locations on the instrument panel, each targeting specific zones on the door trim. This localized approach ensures that even though the overall projection area is expanded, each region receives sufficient illumination intensity appropriate for its specific requirements.
Solution Approach 2:
The door trim is divided into multiple lighting zones, with each zone illuminated by light sources positioned at specific locations on the instrument panel. This segmentation allows the system to maintain adequate illumination intensity across the entire expanded projection area by distributing light sources strategically rather than relying on a single intense source.
3Duration of action of moving object
If the light source remains on when the door is open, then continuous illumination is provided, but light is projected outside the vehicle causing waste and potential safety issues
Solution Approach 1:
The lighting system incorporates feedback from door position sensors to automatically control the light source. When the door opening is detected, the system receives feedback and automatically turns off the light source, preventing light from projecting outside the vehicle while ensuring illumination is provided during normal closed-door operation.
Solution Approach 2:
The lighting system dynamically adjusts its operation based on real-time door position conditions. The light source is activated when the door is closed and automatically deactivated when the door opens, providing adaptive illumination that matches the actual lighting needs and prevents harmful external light projection.
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
Enables broader light coverage and a dynamic pattern on the door trim that changes with door movement, while preventing continuous light projection outside the vehicle when the door is open, enhancing both functionality and aesthetics.
Implementation Method 1
The light source is configured to project light from the instrument panel to a door trim of a door panel
Data Source
AI summary
A vehicle interior lighting device includes a light source which is installed at an end of an instrument panel of a vehicle. Light emitted from the light source propagates from the instrument panel toward a door panel, and is projected on a surface of a door trim of the door panel. A decorative pattern element is installed on a light emitting side of the light source. As light from the light source passes through the decorative pattern element, the light can create a pattern on a surface of the door trim. Because the light source is installed on the instrument panel spaced from the door trim rather than on the door trim itself, light can be projected on a large area of the door trim. Furthermore, an impressive feature of a decorative pattern which changes in accordance with a door opening angle can be achieved.