LED Tube Retrofit Ballast Integration
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Solution Overview
Problem
The high cost and complexity of converting fluorescent tube lighting to newer technologies like LEDs, due to the need for ballasts to regulate voltage and current, make it difficult to replace fluorescent lamps without removing the existing ballast infrastructure.
Innovation Solution
A solid-state semiconductor LED replacement system that includes an electrical connector, DC rectifier, voltage converter, and non-fluorescent light sources like LEDs, integrated within a housing to directly connect to existing fluorescent lamp fixtures, simulating the behavior of a fluorescent tube and using protection, power factor correction, and dimming circuits to work with both magnetic and electronic ballasts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If fluorescent tube lighting is used, then higher efficiency and longer life than incandescent bulbs is achieved, but conversion to LED requires removal of ballast infrastructure making it prohibitively costly
Solution Approach 1:
The patent introduces an intermediary device (LED module with integrated ballast replacement unit) that bridges the existing fluorescent ballast infrastructure and the new LED lighting technology. This intermediary contains a ballast replacement unit with rectifier and driver circuits that interface with the existing ballast, enabling LED operation without complete infrastructure removal and thus reducing conversion costs.
Solution Approach 2:
The LED module is designed with universal compatibility to work with both existing fluorescent ballasts and standalone ballast replacements. The integrated design allows the same LED module to function in different configurations, providing versatility that reduces the need for complete system replacement and lowers conversion costs.
2Reliability
If ballast is required to control voltage and current for fluorescent lamps, then proper electrical regulation is achieved, but device complexity and installation cost increase
Solution Approach 1:
The patent merges the ballast replacement unit with the LED module into a single integrated assembly. This combination integrates the rectifier, driver circuits, and LED components together, reducing the number of separate components and simplifying installation while maintaining proper electrical regulation functionality.
Solution Approach 2:
The patent extracts the essential ballast functions (voltage and current control) from the complex ballast infrastructure and implements them as simplified replacement circuits within the LED module. This extraction retains the necessary electrical regulation while eliminating unnecessary complexity and reducing installation burden.
3Duration of action of stationary object
If LED replacement tube is installed in fluorescent lamp fixture, then high efficiency and long life are achieved, but compatibility with existing ballasts requires additional circuitry
Solution Approach 1:
The patent incorporates preliminary action through pre-designed integration circuits and protection features that are built into the LED module before installation. The rectifier and driver circuits are pre-configured to handle various ballast types, and protection circuits are pre-installed to manage voltage spikes and electrical stress, eliminating the need for additional post-installation modifications.
Solution Approach 2:
The patent applies beforehand cushioning by incorporating protection circuits that anticipate and mitigate potential electrical stressors. These circuits include voltage suppression elements, current limiting mechanisms, and isolation barriers that prevent damage from voltage spikes or incompatible ballast characteristics, ensuring reliable operation without requiring complex adaptive circuitry.
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
Enables efficient, long-lasting, and environmentally friendly LED lighting that is compatible with existing fixtures, offering high efficiency, high power factor, and long life, while eliminating the need for ballasts and reducing installation costs.
Implementation Method 1
A solid state semiconductor LED replacement system that includes an electrical connector, DC rectifier, voltage converter, and non-fluorescent light sources like LEDs
Implementation Method 2
a voltage converter connected to the DC rectifier
Implementation Method 3
the non-fluorescent light source comprises at least one LED
Data Source
AI summary
Various apparatuses and methods for replacing a fluorescent lamp with a non-fluorescent tube are disclosed herein. For example, some embodiments provide an apparatus for replacing a fluorescent lamp, including an electrical connector adapted to electrically connect to a fluorescent lamp fixture, a DC rectifier connected to the electrical connector, a voltage converter connected to the DC rectifier, and a non-fluorescent light source connected to the voltage converter. The DC rectifier, voltage converter and non-fluorescent light source are substantially contained within a housing that is physically configured to replace the fluorescent lamp in a fluorescent lamp fixture.