Vehicle Display Lighting Panel With Reflector Foil for Light Loss Reduction
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Solution Overview
Problem
Conventional lighting units for vehicle displays face challenges with light ray loss and deterioration due to ambient lighting conditions, particularly in varying environmental conditions such as sunlight and poor evening lighting.
Innovation Solution
A lighting unit for vehicle displays that includes a light transmitting panel with a reflector foil sheet applied to at least two sides and a light directing side, ensuring no air gaps for efficient light reflection and conservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional backlight units are used in vehicle displays, then the display can provide illumination, but light rays are lost and illumination intensity deteriorates under varying ambient lighting conditions
Solution Approach 1:
The patent applies reflector foil sheets to convert previously lost light rays (harmful factor) into useful illumination by reflecting them back through the display. The reflector foil captures light rays that would otherwise be wasted and redirects them to improve illumination intensity, effectively converting energy loss into beneficial light output.
Solution Approach 2:
The patent applies reflector foil sheets selectively to specific surfaces of the light transmitting panel - specifically the rear surface and side surfaces. This localized application of reflective properties ensures that light rays are captured and redirected from critical areas where loss occurs, while maintaining the overall transparency and light transmission function of the panel.
2Loss of energy
If reflector foil sheet is applied to light transmitting panel, then light ray conservation improves, but manufacturing complexity increases
Solution Approach 1:
The patent uses thin film reflector foil sheets that can be applied to the light transmitting panel surfaces. These flexible thin films are easier to manufacture and install compared to rigid reflective structures, as they can conform to the panel surfaces and are simpler to integrate into the existing display assembly process.
3Illumination intensity
If reflector foil sheet is applied to at least two sides of light transmitting panel, then illumination intensity increases, but device complexity increases
Solution Approach 1:
The patent combines the reflector foil application with the existing light transmitting panel structure. By integrating the reflective function directly into the panel assembly rather than adding separate complex lighting components, the solution increases illumination intensity while minimizing the increase in overall device complexity.
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 effectively conserves and reflects light rays, increasing illumination and maintaining luminance across different ambient lighting conditions, suitable for both flat and curved displays.
Implementation Method 1
a reflector foil sheet applied to at least two sides of the light transmitting panel with no air gaps therebetween
Data Source
AI summary
A lighting unit for a display apparatus for use in a motor vehicle is disclosed herein. The lighting unit includes a light transmitting panel configured to transmit light rays through to a viewing side of a display apparatus; and at least one light source operable to emit light rays across a breadth of the light transmitting panel. the light transmitting panel further comprises a reflector foil sheet applied to at least two sides of the light transmitting panel with no air gaps therebetween. A vehicle display for mounting within an interior of a motor vehicle comprising such a lighting unit, and a method of optimizing light rays for illuminating a display apparatus for use in a motor vehicle is also disclosed.