Perimeter Fence Lighting with Directional Light Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional security lighting systems for perimeter fences are expensive to install and maintain, consume significant energy, and can blind remote cameras with direct light, requiring professional electricians and causing glare issues for human observers.
Innovation Solution
A low-energy security lighting system using LED units with a hat design that blocks direct light and reflects it downwards, powered by a low-voltage transformer, allowing for easy installation by non-electricians and reducing glare for cameras and human observers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional high voltage lighting is used for perimeter fences, then sufficient illumination is provided, but installation cost and complexity increase significantly
Solution Approach 1:
The patent changes the voltage parameter from conventional high voltage (120V, 230V, 277V, or 460V AC) to low voltage (12V or 24V DC), fundamentally altering the electrical characteristics of the lighting system. This parameter change enables simplified installation without conduit and eliminates the need for registered electricians, directly resolving the contradiction between sufficient illumination and installation complexity
Solution Approach 2:
The patent replaces the mechanical/electrical infrastructure system (conduit, heavy cable, complex wiring) with a simplified low-voltage system that uses small gauge wire and requires no conduit. This substitution eliminates the need for permits and professional electrician installation, directly addressing the contradiction between illumination requirements and installation complexity
2Illumination intensity
If conventional high voltage lighting is used for large perimeter fences, then adequate lighting coverage is achieved, but energy consumption and operating costs increase
Solution Approach 1:
The patent changes the voltage parameter to low voltage (12V or 24V DC) and pairs it with LED technology, which dramatically reduces energy consumption compared to conventional high voltage lighting. This parameter change enables adequate perimeter lighting coverage while significantly reducing operating costs and energy usage
Solution Approach 2:
The patent combines low voltage electrical systems with LED light-emitting technology to create a composite lighting solution that achieves adequate illumination while minimizing energy consumption. The combination of low voltage power delivery and efficient LED conversion creates a system that resolves the contradiction between lighting coverage and energy use
3Illumination intensity
If direct light from security lights is allowed to escape, then maximum illumination is provided, but camera lenses are blinded and security monitoring is compromised
Solution Approach 1:
The patent applies local quality control by using opaque hats with specific geometric configurations that selectively block light in certain directions while allowing illumination in others. The hat design creates localized light management zones that prevent direct light from reaching camera lenses while maintaining adequate illumination of the perimeter area, resolving the contradiction between light output intensity and camera blinding
Solution Approach 2:
The patent converts the potentially harmful direct light into beneficial reflected light by using opaque hats that redirect light downward and away from cameras. The light that would have been harmful (direct beam reaching cameras) is instead transformed into useful reflected illumination that lights the perimeter without blinding surveillance equipment
4Illumination intensity
If direct light is permitted to escape from security lights, then maximum brightness is achieved, but human observers experience glare and reduced visual adjustment ability
Solution Approach 1:
The patent uses opaque hats with geometric configurations that create localized light distribution patterns, directing illumination away from direct observer lines of sight while maintaining brightness in target areas. This local quality control eliminates glare for human observers while preserving necessary illumination intensity
Solution Approach 2:
The patent transforms harmful direct light into beneficial reflected light that provides illumination without glare. The opaque hats redirect light paths so that the same light energy that would have caused glare is instead converted into comfortable, diffuse illumination that maintains brightness while eliminating visual discomfort
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 significantly reduces installation and maintenance costs, minimizes energy consumption, and prevents camera blinding by using reflected light, enhancing security monitoring while being easier to install and operate.
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 lighting system includes a transformer for transforming high voltage current to low voltage current, and a wiring run having electrically conductive wiring for connecting a plurality of security lights to the transformer. Each security light includes a light module having a low voltage LED light, a hat covering the LED light, and a junction box coupled with the light module. The junction box has an interior compartment containing electrical components including a microprocessor connected with the LED light for controlling operation of the LED light, whereby the electrical components within the junction box are electrically connected with the wiring run. A clamping assembly is coupled with the junction box for securing the security light to a fixed element. Each security light includes a light module having the LED light and the hat overlies the LED light to block the escape of direct light from the light module while allowing reflected light to escape from the light module.