Inline Driver Module for SSL Retrofit
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Solution Overview
Problem
Existing incandescent lighting fixtures operate at low luminous efficiency and have short lifespans compared to solid-state lighting (SSL) sources like LEDs, and most lighting systems are powered with alternating current (AC) power, while SSL sources typically use direct current (DC) power, necessitating a conversion solution for retrofitting incandescent fixtures to SSL without complete replacement.
Innovation Solution
An inline driver module that converts AC power to DC power using a driver module with a printed circuit board (PCB) and connectors, allowing for the retrofitting of incandescent fixtures to SSL sources, including a convertible inline driver module with an input adaptor and output connector cap for flexible adaptation to different power sockets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If incandescent light bulbs are used in existing fixtures, then the fixtures can operate with simple AC power connections, but the luminous efficiency is very low and lifespan is very short
Solution Approach 1:
An inline driver module is introduced as an intermediary component between the AC power source and the SSL fixture. This driver module contains a power conversion circuit that converts AC power to DC power, enabling SSL sources to operate in existing AC-powered fixtures without requiring complete fixture replacement. The driver module acts as a mediator that bridges the incompatibility between AC-powered fixtures and DC-powered SSL sources.
2Duration of action of moving object
If SSL sources are used to replace incandescent bulbs, then luminous efficiency and lifespan are improved, but AC to DC power conversion is required
Solution Approach 1:
The driver module combines multiple functions into a single integrated unit: AC to DC power conversion, voltage regulation, and protection circuitry. This consolidated approach simplifies the overall system by merging the power conversion functionality directly into the fixture's power line, eliminating the need for separate power supply components and reducing system complexity despite adding power conversion capability.
3Use of energy by moving object
If complete replacement of incandescent fixtures is performed to use SSL sources, then power efficiency and lifespan are improved, but cost and complexity of installation increase
Solution Approach 1:
The solution segments the retrofit process into two independent parts: the existing incandescent fixture remains unchanged, and a separate inline driver module is inserted into the power line. This segmentation allows the power conversion functionality to be added independently without modifying the fixture structure, making retrofitting simpler and more cost-effective than complete fixture replacement.
4Use of energy by moving object
If SSL sources are used, then luminous efficiency is improved, but compatibility with existing AC power sockets is lost
Solution Approach 1:
The inline driver module is designed with universal AC power input connections that are compatible with standard AC power sockets and wiring. The driver module performs AC to DC conversion and provides regulated DC output suitable for SSL sources. This multi-functional design enables the same driver module to work with various SSL sources while maintaining compatibility with existing AC power infrastructure, achieving both improved luminous efficiency and retained adaptability.
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 conversion of AC power to DC power for SSL fixtures, facilitating the retrofitting of incandescent lighting fixtures to SSL sources, enhancing power efficiency and extending the lifespan of lighting systems while maintaining compatibility with existing infrastructure.
Implementation Method 1
the driver PCB configured to convert an AC power input from the AC power socket to a DC power output supplied to the output connector
Data Source
AI summary
An inline driver module includes an input connector, the input connector comprising a live contact and a neutral contact, the live contact configured to connect to a live line of an AC power socket, the neutral contact configured to connect to a neutral line of the AC power socket; an output connector, the output connector comprising a positive contact and a negative contact; and a driver module, the driver module disposed between the input connector and the output connector, the driver module comprising a driver housing and a driver PCB, a driver housing cavity defined within the driver housing, the driver PCB disposed within the driver housing cavity, the driver PCB connected in electrical communication with the live contact, the neutral contact, the positive contact, and the negative contact, the driver PCB configured to convert an AC power input from the AC power socket to a DC power output.