External Surge Protection for LED Road Lighting
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Solution Overview
Problem
Traditional road lighting control methods focus on timing control, leading to energy loss, and existing surge protection devices for LED road lighting are prone to damage from long-term surge attacks, requiring frequent replacement and costly, hazardous maintenance.
Innovation Solution
A photocontrol device integrating a surge protection unit with differential, common, or all-mode protection schemes, using a combination of MOVs and thermal protection devices, connected to a ground connector for easy installation and replacement, reducing maintenance costs and improving safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surge protection device is mounted inside LED road lighting on high light pole (5-10m height), then surge protection function is provided, but installation and replacement require lift trucks and take significant time, increasing maintenance cost and safety risks
Solution Approach 1:
The invention separates the surge protection device from the LED road lighting fixture, making it an independent externally-mountable unit. This segmentation allows the surge protection device to be installed separately on the lighting pole without requiring disassembly of the lighting fixture itself, thereby improving accessibility while maintaining protection functionality.
Solution Approach 2:
The invention introduces an external mounting structure as an intermediary between the lighting pole and the surge protection device. This intermediary mounting structure provides easy access for installation and maintenance personnel while securing the surge protection device in position, eliminating the need for complex internal integration within the lighting fixture.
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 integrated surge protection enhances energy efficiency and safety by providing simultaneous surge voltage and current protection, simplifying maintenance and reducing operational risks for maintenance staff.
Implementation Method 1
The surge protection circuit is disposed inside the hermetic chamber. The surge protection circuit includes at least one protection component. The surge protection unit is designed as differential mode, common mode, or all-mode scheme according to the different number of protection components.
Implementation Method 2
The principle of photo control is that, based on changes of the photosensitive component with respect to changes of the intensity of the light source, the on/off of the lighting power supply is controlled
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
The application relates to a photocontrol, more particularly to a photocontrol with a surge protecting function.