Integrated LED Light Engine with AC Terminals
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Solution Overview
Problem
Current LED lighting solutions lack integrated LED modules that can operate directly with AC power without high total harmonic distortion, necessitating external driving circuitry and limiting energy efficiency compliance with energy programs.
Innovation Solution
An integrated LED device comprising multiple LEDs connected to a circuit board with integrated circuit drivers and AC terminals, allowing direct connection to AC line voltage without external power supplies, and incorporating THDi and dimming circuits to maintain low harmonic distortion and enable energy-saving features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If direct AC connection is used to simplify the LED system, then device complexity is reduced, but total harmonic distortion of current increases
Solution Approach 1:
The patent combines the LED array, driver circuitry, and AC input terminals into a single integrated LED device. The driver circuitry is built directly on the circuit board that also carries the LEDs, eliminating the need for separate external power supplies and control circuits. This integration reduces overall system complexity while the driver circuitry actively manages current to maintain low THDi levels.
Solution Approach 2:
The driver circuitry acts as an intermediary between the AC power source and the LEDs. It includes components that convert and regulate the AC current, using pulse-width modulation (PWM) and current regulation techniques to drive the LEDs while filtering out harmful harmonics. This intermediary layer resolves the contradiction by enabling direct AC connection without high THDi.
2Object-generated harmful factors
If external driving circuitry is used to maintain low THDi, then total harmonic distortion is reduced, but device complexity increases
Solution Approach 1:
The patent integrates the driver circuitry directly onto the same circuit board as the LED array, combining what would traditionally be separate external components into a single unified device. The driver ICs are mounted on the circuit board along with the LEDs, eliminating the need for separate external power supplies and control circuits, thus reducing overall system complexity while maintaining low THDi performance.
3Loss of energy
If integrated AC operation is implemented to improve energy efficiency, then energy savings are achieved, but manufacturing complexity increases
Solution Approach 1:
The patent uses modular LED arrays where multiple LEDs are organized into segments on the circuit board, each segment可控 by dedicated driver circuitry. This segmentation allows for standardized manufacturing modules that can be produced efficiently and then assembled into larger lighting systems, reducing overall manufacturing complexity despite the advanced integrated AC operation.
Solution Approach 2:
The driver circuitry incorporates adjustable parameters for current regulation, pulse-width modulation duty cycles, and dimming control that can be programmed during manufacturing. This allows the same hardware platform to be configured for different applications and energy efficiency requirements without requiring different manufacturing processes, thus managing manufacturing complexity while achieving energy savings.
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
The solution provides a compact, energy-efficient LED system with low THDi, qualifying for energy-saving programs and offering continuous light output with reduced energy costs and improved design flexibility.
Implementation Method 1
an integrated Light Emitting Diode (LED) device including multiple LEDs connected to a circuit board
Implementation Method 2
Transform Electrical Energy to Optical Energy
Data Source
AI summary
An integrated Light Emitting Diode (LED) device including multiple LEDs connected to a circuit board, integrated circuit (IC) drivers connected to the circuit board, and a first alternating current (AC) terminal and a second AC terminal connected to the circuit board.