LED Lamp Retrofit Using Fluorescent Ballast Rectification
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Solution Overview
Problem
The existing methods for replacing conventional fluorescent lamps with LED lighting devices result in increased costs due to the need for a new LED driver and rewiring, as well as the wastage of the fluorescent lamp ballast, making the process inconvenient for users.
Innovation Solution
A light emitting diode (LED) lighting device that incorporates a fluorescent lamp ballast and LED lamps, where the LED lamps include a rectifying and filtering circuit or anti-parallel LED strings, allowing direct replacement of fluorescent lamp tubes without additional modifications, thereby reducing reinstallation costs and facilitating user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional fluorescent lamp ballast is replaced with a new LED driver, then the lighting device can be updated to LED technology, but the reinstallation cost increases and user convenience deteriorates
Solution Approach 1:
The fluorescent lamp ballast is designed to perform multiple functions: it can drive both conventional fluorescent lamps and LED lamps. By integrating a rectifying circuit and filtering circuit within the ballast, it becomes a universal power supply that can handle both AC and DC outputs, eliminating the need for separate LED drivers and maintaining backward compatibility while enabling LED functionality
Solution Approach 2:
The patent combines the LED driver functionality directly into the existing fluorescent lamp ballast by integrating rectifying and filtering circuits. This merging eliminates the need for separate LED driver components and rewiring, allowing the ballast to directly power LED lamps while maintaining the original installation structure
2Reliability
If a conventional fluorescent lamp ballast is replaced with a new LED driver, then the lighting device can be updated to LED technology, but the reinstallation cost increases
Solution Approach 1:
Instead of discarding the existing fluorescent lamp ballast, the patent recovers and reuses it by integrating additional rectifying and filtering circuits. This approach eliminates the need to purchase and install expensive new LED drivers, significantly reducing reinstallation costs while enabling LED functionality
3Reliability
If rewiring is performed to install LED lighting, then the lighting device can be updated to LED technology, but the complexity of installation increases
Solution Approach 1:
The ballast is designed as a universal power supply that can drive both fluorescent and LED lamps without requiring changes to the wiring structure. The integrated rectifying and filtering circuits handle both AC and DC outputs, allowing the same ballast to power different lamp types while maintaining the original installation complexity
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 solution enables cost-effective and convenient conversion of fluorescent lamp installations to LED lighting by utilizing the existing fluorescent lamp ballast, reducing the need for new drivers and rewiring, while ensuring proper current management for the LED lamps.
Implementation Method 1
the first light emitting diode lamp includes a rectifying and filtering circuit and at least one light emitting diode string coupled with the rectifying and filtering circuit
Implementation Method 2
at least one light emitting diode string coupled with the rectifying and filtering circuit
Implementation Method 3
the second light emitting diode lamp includes at least one set of anti-parallel light emitting diode strings which is coupled with the fluorescent lamp ballast
Data Source
AI summary
The present application discloses a light emitting diode lighting device and a light emitting diode lamp, the light emitting diode lighting device includes: a fluorescent lamp ballast outputting an alternating current; and at least one first light emitting diode lamp coupled with the fluorescent lamp ballast, and comprising a rectifying and filtering circuit and at least one light emitting diode string coupled with the rectifying and filtering circuit. The present application directly replaces a conventional fluorescent lamp tube with a properly designed LED lamp without any other modifications when reinstallation a conventional fluorescent lamp lighting device into a light emitting diode lighting device, which may reduce the cost of reinstallation, and greatly facilitate the user.