Louver Panel Shading for LED Display Contrast and Seam Camouflage
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Solution Overview
Problem
Existing electronic signs face challenges in improving visibility and contrast due to ambient light washout, with previous shading devices offering limited success and causing visual interference, such as blocking sideways views of LEDs and revealing unsightly gaps between LED panels.
Innovation Solution
A louver panel with horizontally aligned primary and secondary louvers, arranged in columns and rows, provides maximum LED background contrast and expanded viewing angles by shading LEDs from various positions, camouflaging seams between modules, and allowing unrestricted horizontal viewing through the use of rectangular or scallop-shaped louvers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If individual shade members are provided for individual LEDs, then shading is improved, but device complexity increases and visual interference occurs
Solution Approach 1:
Multiple individual shade members for separate LEDs are merged into a single continuous louver structure that spans across multiple LEDs. This louver panel integrates shading for multiple LEDs into one unified component, reducing the total number of parts while maintaining effective shading across the entire LED array.
Solution Approach 2:
The louver structure serves multiple functions simultaneously: it provides shading for multiple LEDs, creates visual uniformity across the display, and eliminates the need for individual shade members. The single louver structure universally addresses shading needs for the entire LED row it covers.
2Object-affected harmful factors
If louver devices are used to shade LEDs, then ambient light blocking is improved, but sideways viewing is hampered
Solution Approach 1:
The louver structure is designed with specific local characteristics: it is positioned and dimensioned to provide shading primarily from overhead ambient light sources while maintaining open viewing angles from the sides. The louver's orientation and spacing create different optical properties for different viewing directions, allowing shading where needed while preserving visibility from appropriate angles.
3Productivity
If LED panels are adjacently located to expand display area, then productivity is improved, but visible gaps between panels occur
Solution Approach 1:
The louver panel acts as an intermediary element between adjacent LED panels. By positioning louvers at the boundaries where panels meet, the structure visually bridges the gap between panels, creating a continuous appearance that masks the physical separation and maintains visual uniformity across the expanded display area.
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 enhances viewing angles and contrast, providing a near-seamless and highly consistent image with larger viewing angles, effectively masking gaps between LED panels and improving visibility from multiple positions, while preventing the 'tiling' effect.
Implementation Method 1
horizontally aligned primary and secondary louvers... providing shading for a higher LED background contrast
Data Source
AI summary
A louver panel for an electronic sign incorporating multiple spaced primary and secondary louvers extending outwardly from a configured substantially planar panel to provide direct shading of the structure adjacent to an LED, to the structure of the louver panel including the louvers and the panel, and to provide shading for all or part of an LED. Spacings of the louvers provide for regions of shade which improve contrast and which in transition between panels camouflage horizontal seams.