Modular LED Driver and Bulb Segmentation for DC Control
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Solution Overview
Problem
Current LED lighting systems that use AC current require a combined bulb and driver unit, leading to higher replacement costs and reduced flexibility due to different useful lives of the bulb and driver components, and they lack the ability to efficiently distribute DC current for power and communication.
Innovation Solution
A lighting control system that uses a DC current delivery system with separate driver and bulb components, allowing for independent replacement and control of drivers, and utilizes Cat 5 wire for both power and communication, enabling easier installation and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LED bulbs are driven by AC current using combined bulb and driver units, then the lighting system can be powered by conventional AC power sources, but the replacement cost increases and flexibility decreases due to different useful lives of bulb and driver components
Solution Approach 1:
The patent divides the LED lighting system into separate functional modules: AC power source, driver unit, and LED bulb. The driver and bulb can be independently replaced based on their respective lifecycles, eliminating the need to replace both components together as in integrated designs. This segmentation directly addresses the replacement cost and flexibility issue while maintaining reliable operation.
2Reliability
If LED bulbs are driven by AC current using combined bulb and driver units, then the lighting system can operate with conventional power sources, but the device complexity increases due to integration requirements
Solution Approach 1:
The system is segmented into distinct functional units (power source, driver, bulb) that can be independently designed, manufactured, and maintained. This reduces the complexity of each individual component while maintaining system reliability through modular architecture.
Solution Approach 2:
The driver unit is designed as a universal component that can interface with different LED bulb types and power sources, reducing overall system complexity through standardization and multi-functionality rather than requiring custom integrated designs for each application.
3Adaptability or versatility
If LED bulbs are driven by DC current with separate drivers and bulbs, then flexibility and resource efficiency improve through independent replacement, but the system requires DC power delivery infrastructure
Solution Approach 1:
The system separates the power conversion function (driver) from the light emission function (bulb), allowing independent replacement and optimization of each component. This segmentation enables flexible adaptation to different power sources and bulb types without requiring complex integrated designs.
Solution Approach 2:
The patent employs pulse width modulation (PWM) to control the DC current delivered to the LED bulbs, enabling variable light output and dimming control. This parameter control technique provides adaptability in light output while using simple DC power delivery infrastructure.
4Ease of operation
If additional circuitry is added to enable variable light output in LED bulbs, then dimming capability is achieved, but the cost and complexity of the bulb increases
Solution Approach 1:
The patent extracts the dimming and control circuitry from the LED bulb itself and places it in the external driver unit. This allows variable light output control to be achieved through the driver's PWM capabilities while keeping the bulb design simple and cost-effective, directly addressing the complexity and cost issue.
Data Source
AI summary
A control system controls the operation of at least a first and a second independently controllable LED light member. The control system includes a frame member on which a plurality of electrical components can be mounted, and at least one input port for receiving at least one of a power source and a command signal source capable of sending a command signal to at least one of the first and second LED light members. A first driver member is provided for conducting power to deliver conditioned DC power to the first LED member. A first driver to frame connector removably couples the first driver member to the frame member. A second driver member conditions power to deliver conditioned DC power to the second LED member, and a second driver to frame connector removably couples the first driver member to the frame member. A first external output port is coupled to the first driver, and a second external output port coupled to the second driver. A first multi-channel electrical conductor is coupled to the first external output port for conducting conditioned DC current to the first LED light member; and a second multi-channel electrical conductor conducts conditioned DC current to the second LED light member.