Perimeter Fence Security Lighting with Hat Structure
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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, necessitating high voltage and professional electrical installation.
Innovation Solution
A low-energy security lighting system using LED units with a hat structure to block direct light and reflect it downward, connected via a low-voltage transformer, allowing non-electricians to install and reducing camera interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional 120V AC security lighting is used for perimeter fences, then the fence area is adequately illuminated, but energy consumption is high and installation costs are high
Solution Approach 1:
The patent changes the electrical parameters from conventional 120V AC to low-voltage DC (12-24VDC) through the use of a transformer. This parameter change enables the use of LED lighting modules that consume significantly less energy while maintaining adequate illumination effectiveness for security purposes.
2Illumination intensity
If conventional security lighting is used, then the perimeter is well-lit, but remote cameras are blinded by direct light
Solution Approach 1:
The patent applies local quality by using a hat structure with different optical properties for different directions. The hat blocks light in the upward direction (preventing camera blinding) while allowing light to escape in downward directions (maintaining perimeter visibility). This directional control creates local quality variations in light distribution.
Solution Approach 2:
The patent converts the harmful effect of direct light (camera blinding) into a beneficial directional distribution pattern. By using the hat structure to block upward light, the system redirects illumination downward where it is needed for security purposes, while the blocked light path prevents camera interference.
3Illumination intensity
If 120V AC lighting systems are installed, then adequate lighting is provided, but installation requires registered electricians and takes significant time
Solution Approach 1:
The patent changes the voltage parameter from high-voltage 120V AC to low-voltage DC (12-24VDC), which eliminates the requirement for registered electricians and permits. Low-voltage systems are safer and can be installed by non-professionals, significantly improving installation ease while maintaining lighting performance through efficient LED technology.
4Area of stationary object
If conventional lighting is used for large perimeter areas, then the entire perimeter is covered, but the system is expensive to install and operate
Solution Approach 1:
The patent changes from conventional high-power lighting to low-voltage LED modules, dramatically reducing energy consumption per unit. When scaled across large perimeter areas, this parameter change results in significantly lower operating costs while maintaining comprehensive coverage through the efficient light output of LED technology.
Solution Approach 2:
The patent employs inexpensive LED modules that can be easily replaced if needed. These low-cost individual units allow for economical coverage of extensive perimeter areas, reducing both initial installation costs and long-term operating expenses compared to conventional lighting systems.
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 provides effective, cost-efficient security lighting that minimizes camera blinding and can be installed by non-professionals, using less power and reducing installation costs.
Implementation Method 1
a light module with a LED unit adapted to generate light
Implementation Method 2
a hat overlying the LED unit that is adapted to block the escape of direct light from the light module while allowing reflected light to escape from the light module
Data Source
AI summary
A security light for a fence includes a light module having an LED unit and a junction box. The junction box contains electrical components for operating the LED unit, and has a rear end with a rear wall and a front end having a front opening that opposes the rear wall. A clamp assembly is coupled with the junction box and opposes the rear end of the junction box to define an opening for a fence post. The front opening of the junction box provides access to the interior of the junction box for conducting electrical wiring operations. A front cover plate is assembled with the junction box for covering the front opening of the junction box. When the junction box is clamped to the fence post, the front cover plate is removable for providing access to the interior of the junction box.