Parallel LED Light String Circuit for Low-Power, Consistent Brightness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing LED light strings face high power consumption and require specific cutting due to series-parallel connections, leading to inconsistent brightness and the need for return lines, limiting flexibility and increasing costs.
Innovation Solution
A light string design with parallel LED luminous bodies, each comprising resistors and LED light emitting chips in series, without current limiting IC chips, allowing for arbitrary cutting and reduced power consumption by controlling operating currents and resistances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If series-parallel connection is adopted to ensure brightness consistency, then brightness consistency is improved, but power consumption increases and cutting flexibility is reduced
Solution Approach 1:
The light string is divided into multiple independent LED luminous bodies connected in parallel, where each luminous body contains LED light beads in series. This segmentation allows arbitrary cutting while maintaining brightness consistency within each series group and reducing overall power consumption through parallel connection efficiency.
Solution Approach 2:
The patent changes the electrical parameters by operating at lower current (0.3mA or less per LED light bead) and optimizing the series-parallel configuration. By adjusting the number of series LEDs per chip and the parallel connection structure, the system achieves lower power consumption while maintaining brightness consistency.
2Illumination intensity
If series-parallel connection is used to ensure brightness consistency, then brightness uniformity is improved, but device complexity increases due to return line requirements
Solution Approach 1:
The circuit is segmented into independent parallel branches (LED luminous bodies), each containing series-connected LEDs. This eliminates the need for return lines and complex series-parallel switching circuits, simplifying the overall structure while maintaining brightness uniformity through consistent series group configurations.
3Illumination intensity
If series-parallel combination is adopted, then brightness consistency is ensured, but adaptability is reduced due to fixed cutting points
Solution Approach 1:
The light string is designed as multiple independent parallel branches where each branch contains series-connected LEDs. This segmentation enables arbitrary cutting at any point along the string without affecting other branches, providing full cutting flexibility while maintaining brightness consistency within each operational branch.
4Reliability
If current limiting IC chips are used in each luminous body, then current control is improved, but power consumption increases and cost increases
Solution Approach 1:
The patent extracts and eliminates the current limiting IC chips from each luminous body. Instead, current control is achieved through the inherent resistance of series-connected LEDs and optimized parallel branch configuration, reducing power consumption and component complexity while maintaining reliable current control.
Solution Approach 2:
The patent replaces expensive current limiting IC chips with simple resistor-based current control using standard LED forward voltage characteristics. This substitution uses cheaper, simpler components to achieve the same current control function, reducing both cost and power consumption.
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 design achieves low power consumption, improved brightness consistency, and flexibility in cutting, reducing costs by eliminating the need for current limiting IC chips and allowing operation at low currents.
Implementation Method 1
a first LED light emitting chip and a second LED light emitting chip, wherein the first LED light emitting chip includes m LED light beads in series, and the second LED light emitting chip includes n LED light beads in series
Implementation Method 2
each LED luminous body includes at least a resistor, a first LED light emitting chip and a second LED light emitting chip
Data Source
AI summary
Provided is a light string with reduced power consumption and improved brightness, including: at least a first LED luminous body and a second LED luminous body in parallel, wherein each LED luminous body includes at least a resistor, a first LED light emitting chip and a second LED light emitting chip, and each LED luminous body is free of being provided with a current limiting IC chip, wherein the first LED light emitting chip and the second LED light emitting chip each include a plurality of LED light beads of the same specification in series, the first LED light emitting chip includes m LED light beads in series, and the second LED light emitting chip includes n LED light beads in series, and the resistor is in a series relationship with the first LED light emitting chip and the second LED light emitting chip.