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Output circuit of wire-saving LED (light-emitting diode) lamp string cluster

A technology of LED light strings and output circuits, which is applied in the field of holiday lights, decorative lights, and Christmas lights, and can solve problems such as uneven voltage and reduced wire usage

Inactive Publication Date: 2013-12-25
HANGZHOU PULAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The LED light string and the LED light string output circuit of this special connection method can greatly reduce the use of wires, reduce the cost, save materials, and overcome the excessive wire The problem of uneven voltage everywhere on the wire caused by long line voltage drop loss

Method used

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  • Output circuit of wire-saving LED (light-emitting diode) lamp string cluster
  • Output circuit of wire-saving LED (light-emitting diode) lamp string cluster
  • Output circuit of wire-saving LED (light-emitting diode) lamp string cluster

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment 1 is a preferred string of wire-saving LED lamp strings, such as Figure 4 shown. Among them, LED L11, LED L12, ..., LED L1n are all forward connected, while LED L21, LED L22, ..., LED L2n are all reversely connected, the reference wire is the wire connected to the anode of L11, and all LEDs are connected according to one positive and one positive. The anti-periodical connection is connected in parallel on two wires, each group of sub-strings is an LED, and there is no series connection between LEDs in the sub-strings. This connection method should be understood as including but not limited to one forward and one reverse periodic connection, it can also be fully forward connected, it can also be fully reversed connected, and it can also be I positive J reverse periodic connection (I, J are positive integers) , can be the same or different), can also be connected irregularly, and the number of LEDs connected in the forward direction and the number of LEDs con...

Embodiment 2

[0060] Embodiment 2 is another preferred string of wire-saving LED lamp strings, such as Figure 5 shown. Compared with Embodiment 1, the sub-strings of the wire-saving LED light strings contain series resistors, and Embodiment 1 is a special case of Embodiment 2 when the series resistance of each group of sub-strings is zero. Among them, LED L11, LED L12, ..., LED L1n are all forward connected, while LED L21, LED L22, ..., LED L2n are all reversely connected, and the reference wire is the wire connected to the anode of L11. Each group of sub-light strings is An LED and a resistor connected in series, there is no series connection between LEDs in the sub-string. Each group of sub-light strings is connected in parallel to the two wires periodically according to one forward and one reverse. This connection method should be understood as including but not limited to the periodic connection of one positive and one reverse. The connection can also be I positive J anti-periodical ...

Embodiment 3

[0062] Embodiment 3 is a preferred drive module of a two-phase full-bridge line, such as Figure 6 shown. It consists of two independent bridge arms connected in parallel with each other, including four switching tubes. The first phase bridge arm includes an upper transistor Q11 and a lower transistor Q12, and the second phase bridge arm includes an upper transistor Q21 and a lower transistor Q22. The power supply VDD is connected to the power current input terminals of the upper tubes Q11 and Q21. In this example, it is the emitter of the PNP tube. The power supply ground is connected to the power current output terminals of the lower tubes Q12 and Q22. In this example, it is the emitter of the NPN tube. Two lead-out lines are output. They are respectively taken from the power and current output terminals of the upper tubes Q11 and Q21 of each phase bridge arm (this example is the collector of the PNP tube, which is also the power current input terminal of the lower tube of ...

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Abstract

The invention relates to a wire-saving LED (light emitting diode) lamp string and an output circuit of the wire-saving LED lamp string cluster. The wire-saving LED lamp string comprises two lines and at least one group of sub-lamp string; each group of sub-lamp string comprises 1 to 100 LEDs; each group of sub-lamp string is connected in parallel on the two wires. An N-string wire-saving LED lamp string cluster is formed by connecting N wire-saving LED lamp strings in series; the same circuit node is connected by the same wire; N+1 wires are required for connecting the N wire-saving LED lamp string clusters, wherein N is a positive integer. The output circuit comprises a power supply, a control module, a drive module, and the wire-saving LED lamp string clusters; the control module generates a drive signal and sends the drive signal to the drive module; the drive module is connected with the wire-saving LED lamp string clusters; the power supply is connected with the drive module and supplies power to the drive module. By the adoption of the output circuit disclosed by the invention, the same display effect achieved in the conventional connection mode can be achieved, meanwhile, the wires are greatly saved, the process is simplified, and the production cost is reduced.

Description

technical field [0001] The invention relates to the fields of Christmas lights, festival lights and decorative lights, in particular to an output circuit of LED light string clusters. Background technique [0002] With the development of society and the improvement of living standards, LED light strings are not only widely used in occasional decorations such as Christmas, but also in home decoration and various entertainment venues. Compared with traditional incandescent light strings, LED lights have incomparable advantages, such as low energy consumption and bright colors. By selecting different single-color LEDs with colored light strings combined with corresponding control methods, it is possible to produce constant light, gradient, [0003] Various light display effects such as flashing, the length of the light string, the number of channels, and the number of LEDs in each channel can be customized according to specific requirements. The traditional multi-street lamp ...

Claims

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Application Information

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IPC IPC(8): F21S4/00H05B37/02F21Y101/02F21S4/10F21Y115/10
Inventor 林松锋李豪李毓增王柏祥
Owner HANGZHOU PULAI TECH
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