LED Power Source Module for Fluorescent Base Compatibility
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Solution Overview
Problem
The existing fluorescent lamp bases require complex modifications to accommodate LED lamps, particularly due to the need to remove electrical ballasts and starters, which is inconvenient for users and professionals, and can cause LED lamps to burn out due to high voltage.
Innovation Solution
A power source module comprising a filament-simulating circuit, current limiting circuit, and filter, which is connected to the LED lamp's bi-pin terminals to simulate the filament, limit current, and smooth the current, preventing burnout and allowing the LED lamp to operate on a traditional fluorescent lamp base without modifying the base's circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the LED lamp is directly installed on the fluorescent lamp base with electrical ballast, then the installation is simple, but the LED lamp will burn out due to high voltage from the starter and electrical ballast
Solution Approach 1:
The patent introduces a power source module as an intermediary component between the fluorescent lamp base and the LED lamp. This module includes a filament-simulating circuit that mimics the electrical characteristics of a fluorescent lamp filament, allowing the electrical ballast to operate normally while protecting the LED lamp from high voltage damage. The module acts as a buffer that translates the incompatible electrical signals from the ballast into suitable signals for the LED lamp.
2Reliability
If the electrical ballast and starter are removed from the fluorescent lamp base, then the LED lamp can operate safely, but the modification process becomes complicated and requires professional intervention
Solution Approach 1:
The patent extracts the problematic electrical ballast and starter components from the fluorescent lamp base circuit by introducing a power source module that isolates them from the LED lamp. The module contains the filament-simulating circuit and current limiting circuit within itself, effectively removing the need for external modification of the base while maintaining safety. This allows the existing ballast to remain in place without causing damage.
Solution Approach 2:
The power source module serves multiple functions simultaneously: it simulates the filament electrical characteristics, limits current to protect the LED lamp, and interfaces with the existing fluorescent lamp base infrastructure. This multi-functionality allows the module to work with standard fluorescent lamp bases without requiring removal of the electrical ballast or starter, simplifying the installation process.
3Reliability
If the filament-simulating circuit is used to protect the LED lamp, then the LED lamp is protected from burnout, but additional circuit components are required in the power source module
Solution Approach 1:
The patent combines multiple protective functions into a single integrated power source module. The filament-simulating circuit, current limiting circuit, and LED driving circuit are merged into one compact module that interfaces with the fluorescent lamp base. This integration reduces the overall system complexity by consolidating multiple components into a single unit that can be installed as one component.
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 the LED lamp to operate safely and efficiently on a traditional fluorescent lamp base by simulating the filament, limiting current, and rectifying and filtering the power, thus preventing burnout and flickering, without the need for circuit modifications.
Implementation Method 1
a filament-simulating circuit (100, 102)... Each of the first and the second bi-pin terminals has a current flowing from one pin to the other pin via the filament-simulating circuit during a pre-heat process executed by the ballast
Implementation Method 2
The first rectifier is electrically connected to the first bi-pin terminal for rectifying the current from the first bi-pin terminal
Implementation Method 3
The filter is electrically connected between the first rectifier and at least one LED of the LED lamp for smoothing the current from the first rectifier
Data Source
AI summary
A power source module for an LED lamp includes a filament-simulating circuit electrically connected to a first bi-pin terminal and a second bi-pin terminal of the LED lamp, each of the first bi-pin terminal and the second bi-pin terminal configured to allow a current to flow from one pin to the other pin via the filament-simulating circuit during a pre-heat process executed by a ballast; a current limiting circuit electrically connected to the filament-simulating circuit configured to limit a current from the filament-simulating circuit; a first rectifier electrically connected to the current limiting circuit configured to rectify the current from the current limiting circuit; and a filter electrically connected between the first rectifier and at least one LED of the LED lamp configured to smooth the current from the first rectifier.