Perimeter Fence LED Lighting With Reflected Light Shielding
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Solution Overview
Problem
Conventional security lighting systems for perimeter fences are energy-intensive, expensive to install, and can blind remote cameras with direct light, requiring professional electricians and high voltage infrastructure.
Innovation Solution
A low-energy security lighting system using LED units with a hat structure to block direct light and reflect it downward, interconnected with a transformer providing 12-24 VDC or VAC power, and featuring a clamp assembly and alignment system for easy installation on fences, along with optional motion sensors and video recording capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If 120V AC lighting is used for perimeter fences, then security lighting coverage is achieved, but energy consumption increases and installation complexity increases
Solution Approach 1:
The patent changes the electrical parameter from 120V AC to low-voltage DC (12-24VDC) through the use of a transformer, which reduces energy consumption while maintaining adequate lighting coverage. This parameter transformation allows the system to operate efficiently at lower voltages without sacrificing security lighting performance.
2Illumination intensity
If 120V AC lighting is used for perimeter fences, then security lighting coverage is achieved, but installation time and cost increase
Solution Approach 1:
The patent transforms the electrical parameter from high-voltage 120V AC to low-voltage DC, which eliminates the requirement for licensed electricians and complex electrical permits. This parameter change simplifies installation to a level that can be performed by non-electricians, significantly reducing installation time and associated costs.
3Illumination intensity
If direct security lighting is used, then visibility is improved, but camera monitoring is compromised due to hot spots
Solution Approach 1:
The patent applies local quality by using reflective surfaces positioned at specific locations to redirect light in desired directions. The reflectors are strategically placed to bounce light toward the perimeter area while directing it away from camera lenses, creating localized illumination zones that avoid camera blinding while maintaining visibility.
Solution Approach 2:
The patent introduces reflective surfaces as intermediary elements between the light source and the perimeter area. These reflectors mediate the light path, redirecting illumination toward the fence perimeter while preventing direct light from reaching camera lenses, thus eliminating hot spots and camera blinding effects.
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 system reduces energy consumption, eliminates camera blinding, and allows non-electrician installation, providing effective and cost-efficient security lighting with reduced operational costs and improved monitoring capabilities.
Implementation Method 1
a light module with a LED unit adapted to generate light
Implementation Method 2
The concave bottom surface of the hat preferably has a reflective coating for reflecting light generated by the LED unit
Data Source
AI summary
A security lighting system includes security lights mounted atop fence posts. Each security light has a light module including a central housing having outwardly extending support arms. A LED unit is mounted in a depression formed in a top surface of the central housing, and a hat covers the top surface of the central housing for allowing only reflected light to escape from light module. The security light has a junction box containing electrical components, and an extension tube having an upper end secured to the light module and a lower end secured to the junction box. The security light includes a clamp assembly for securing the junction box atop a fence post, and an alignment system for aligning the extension tube with the longitudinal axis of the fence post so that the support arms extend perpendicular to the longitudinal axis of the fence post.