Display Panel Layer Layout for Clear Sign Illumination
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Solution Overview
Problem
In lighting devices with multiple light sources and display panels, short distances between light emission portions can lead to light leakage, resulting in unclear sign display and reduced design performance and functionality.
Innovation Solution
A lighting device with a display panel having a layered structure, including a transparent base layer, a decorative layer with higher light transmittance display decorative portions, and a blocking layer with higher light transmittance display blocking portions. The blocking layer's outer-edge portion is positioned radially outer to the decorative layer's outer-edge portion, preventing light from reaching adjacent display areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the distance between adjacent light emission portions is shortened, then the device can display more signs in a compact area, but light leakage occurs between adjacent light emission portions causing unclear sign display
Solution Approach 1:
The display panel is segmented into multiple independent light emission portions, each with its own light source and display area. The blocking layer is also segmented into corresponding blocking portions that are positioned between adjacent light emission portions to prevent light leakage. This segmentation allows compact arrangement while maintaining clear display of each sign.
Solution Approach 2:
The blocking layer is selectively positioned only in specific locations where light leakage would occur between adjacent light emission portions, rather than uniformly across the entire display panel. This local blocking approach prevents light leakage at critical interfaces while maintaining light transmission in display areas, thus preventing unclear sign display in compact configurations.
2Reliability
If a blocking layer is added to prevent light leakage, then sign display clarity is improved, but the device structure becomes more complex
Solution Approach 1:
The blocking layer is integrated with the display panel structure as a single unified component rather than being added as a separate element. The blocking portions are formed as part of the display panel's layered structure, combining the functions of light blocking and display panel support into one integrated structure, thus preventing light leakage without significantly increasing device complexity.
Solution Approach 2:
The blocking layer serves multiple functions simultaneously: it blocks light leakage between adjacent light emission portions, provides structural support for the display panel, and helps define the boundaries of display areas. This multi-functionality reduces the need for additional separate components, thus improving sign display clarity without proportionally increasing 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 prevents light leakage between adjacent light emission portions, ensuring clear and distinct sign display, while maintaining design performance and functionality.
Implementation Method 1
a display panel located on the front side of the light sources has a display area through which light emitted by the light source is transmitted
Implementation Method 2
a blocking layer located on a back side relative to the transparent base layer
Data Source
AI summary
Provided is technology that enables a lighting device to luminously display a clear sign. A display panel 3 of a lighting device 1 has a layered structure including a transparent base layer 30, a decorative layer 33 having a general decorative portion 33g and a display decorative portion 33d, and a blocking layer 35 having a general blocking portion 35g and a display blocking portion 35d. A blocking outer-edge portion 35e which is at least a part of an outer edge of the display blocking portion 35d is located on a radially outer side relative to a paired decorative outer-edge portion 33e.