Articulating Security Light Fixture with Glare Shroud
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Solution Overview
Problem
Traditional security lighting systems for perimeter fences often result in excessive light levels, creating shadows and glare that hinder security personnel's ability to detect intruders, while also being inefficient and costly to maintain, due to their design based on outdated principles and high mounting heights of light fixtures.
Innovation Solution
A perimeter security lighting system with light fixtures mounted directly on the fence at a lower height, using precision optics and extra-low voltage LEDs, which provides even and directed light distribution, reducing glare and shadows, and incorporating a glare shroud to create a tactical blinding zone for intruders while maintaining a glare-free zone for security personnel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If light fixtures are mounted at high heights (25-60 feet) on poles, then the illuminated area coverage is improved, but blinding glare is generated that renders security personnel ineffective
Solution Approach 1:
A glare shroud is introduced as an intermediary component between the light source and the environment. The shroud redirects light away from direct viewing angles, preventing blinding glare while maintaining area coverage. The shroud acts as a mediator that modifies light distribution without reducing overall illumination coverage.
Solution Approach 2:
The lighting system creates different light quality zones: a glare-free zone for security personnel and a blinding glare zone for intruders. By controlling the direction and distribution of light locally, the system provides appropriate illumination quality to different areas and users simultaneously.
2Ease of manufacture
If legacy lighting products are adapted for security lighting, then installation is simplified, but excessive light levels create shadows where intruders can hide
Solution Approach 1:
The system changes the parameters of light distribution by using adjustable LED fixtures with precision optics. Instead of using fixed legacy lighting products, the system modifies light intensity, direction, and distribution parameters to eliminate shadows while maintaining ease of installation through standardized mounting components.
Solution Approach 2:
The lighting system incorporates adjustable and reconfigurable components that allow dynamic optimization of light distribution. The fixtures can be adjusted to change beam angles and coverage areas, enabling the system to adapt to different installation environments and eliminate shadows dynamically.
3Illumination intensity
If more light is used to improve security lighting, then visibility is enhanced, but the human eye cannot adjust to the bright conditions
Solution Approach 1:
The system provides different illumination intensities to different areas: bright light in the glare zone for intruders and controlled, glare-free light in the security personnel zone. This local differentiation allows high visibility where needed while maintaining human eye comfort and adaptation for operators.
4Power
If high voltage power is used for security lighting, then sufficient power is available, but maintenance costs and safety risks increase
Solution Approach 1:
The system changes the voltage parameter from high voltage to extra-low voltage (ELV) operation. ELV LED fixtures provide sufficient power for security lighting while dramatically reducing safety risks and maintenance costs. The ELV system eliminates the need for complex electrical infrastructure and reduces liability concerns.
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 enhances security by allowing effective detection and deterrence of intruders with reduced maintenance costs and energy consumption, providing a more efficient and effective lighting solution that aligns with the natural light sensitivity of the human eye.
Implementation Method 1
each LED has an optical lens configured to pass light having a beam angle of 137-156 degrees
Data Source
AI summary
A light fixture for a security lighting system includes an elongated pipe having a lower pipe section, an upper pipe section, and an articulating joint coupling a lower end of the upper pipe section with an upper end of the lower pipe section for enabling the upper and lower pipe sections to articulate relative to one another. A clamping element is coupled with the lower end of the lower pipe section. A glare shroud is secured to the upper end of the upper pipe section. One or more LEDs are secured to an underside of the glare shroud. Each LED has an optical lens that is configured to pass light from the underside of the glare shroud at a predetermined beam angle of 137-156 degrees.