Parabolic Reflector Insulation Stand-off for Strobe Energy Efficiency
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Solution Overview
Problem
Existing strobe lamps in security system annunciators face challenges in minimizing battery energy consumption while maintaining effective visual alerting for individuals with visual impairments, and there is a need for improved methods in constructing these devices to further reduce energy usage.
Innovation Solution
The use of a modified parabolic reflector with a metalized coating and an insulation stand-off region in conjunction with a diffusing lens and a pulsing circuit to optimize the energy efficiency of strobe lights, allowing for reduced flashover risk and smaller bushings, which enhances the energy efficiency and reliability of the visual alerting mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a strobe light is used with a conventional reflector, then the light output is adequate, but the energy consumption is higher than optimal
Solution Approach 1:
The patent employs a parabolic reflector with a curved surface that is revolutionally symmetric about a longitudinal axis. This curved geometry focuses and directs the light from the strobe tube more efficiently compared to conventional flat or simple curved reflectors, maximizing the light output for the minimal energy consumed by the strobe light.
Solution Approach 2:
The reflector's parabolic shape is specifically designed with dimensions and curvature parameters optimized for the strobe light source. The parabolic geometry transforms the light emission pattern to concentrate it in a specific direction, improving the energy efficiency ratio of the visual alerting system.
2Illumination intensity
If the reflector is designed to maximize light output, then the visual alerting is enhanced, but the risk of electrical flashover increases
Solution Approach 1:
The patent introduces an insulation stand-off region at the focal area of the parabolic reflector where the metalized coating is intentionally omitted. This localized absence of conductive material creates an electrical insulation barrier that prevents flashover while the rest of the reflector surface maintains its light-reflecting functionality.
Solution Approach 2:
The insulation stand-off region acts as an intermediary barrier between the high-voltage strobe light electrodes and the metalized reflector surface. This non-conductive zone mediates the electrical interaction, allowing optical functionality while blocking harmful electrical discharge paths.
3Reliability
If larger bushings are used to accommodate the strobe light, then the electrical connection is reliable, but the device size and complexity increase
Solution Approach 1:
The insulation stand-off region changes the electrical parameter landscape by creating a controlled non-conductive zone. This allows the use of smaller bushings with reduced electrical clearance requirements while maintaining reliable electrical connections, as the stand-off region provides the necessary insulation without requiring oversized components.
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
This configuration significantly reduces battery energy consumption while ensuring effective visual alerting, enhancing the reliability and efficiency of the strobe lamps in security systems, particularly in battery-powered applications.
Implementation Method 1
a shaped reflector (18) which receives incident light from the strobe lamp (20) and reflects incident light in accordance with the design objectives of the annunciator (10)
Implementation Method 2
collimating the light from the strobe onto a diffusing lens causes the light source to appear much larger than the actual light emitting source
Data Source
AI summary
An annunciator is provided. The annunciator includes a parabolic reflector formed from an insulating material, a reflective layer of metal disposed on a surface of the reflector, a high voltage strobe lamp disposed at a focal point of the reflector with a set of conductors of the strobe lamp extending through a center aperture of the reflector and a portion of the reflector proximate the aperture devoid of metallization.