Non-polarity high-voltage LED lamp strip

Abstract

A non-polarity high-voltage LED lamp strip comprises a circuit board, a plurality of LED lamp beads arranged in the length direction of the circuit board are arranged on the circuit board, two main circuits extending in the length direction of the circuit board are arranged on the two sides of each LED lamp bead, and a forward connection light-emitting chip and a reverse connection light-emitting chip which are connected in parallel are installed in each LED lamp bead. The plurality of LED lamp beads are connected in series to form a plurality of series units with the working voltage of 220V, and the plurality of series units are directly connected to the two main circuits in parallel. According to the utility model, as the positive connection light-emitting chips and the reverse connection light-emitting chips are arranged in the LED lamp beads, a patch bridge rectifier can be abandoned to be directly connected with the mains supply, so that the width size of a circuit board is reduced; meanwhile, stroboflash of the lamp strip can be eliminated, the manufacturing process is simplified, the manufacturing cost is reduced, and the effect of the lamp strip is improved.

Description

Technical Field

[0001] The utility model relates to an LED lamp, and particularly discloses a non-polarity high-voltage LED light strip. Background Art

[0002] A high-voltage LED light strip is one that can be powered directly by 220V AC mains electricity. Existing high-voltage LED light strips include a circuit board with a series unit consisting of multiple LED beads connected in series, each with an operating voltage of 220V. Each series unit also contains a surface mount chip bridge stack to convert the AC mains electricity into DC power to power the LED beads. Because the SMD bridge stack is large and requires a wider circuit board, the existing high-voltage LED light strips are relatively wide, making them difficult to install in narrow slots. Furthermore, the power consumption of the SMD bridge stack and the resulting energy conversion losses also result in high power consumption. Utility Model Content

[0003] Based on this, it is necessary to provide a high-voltage LED light strip with a simple structure, small size and low power consumption to address the existing technical problems.

[0004] In order to solve the problems of the existing technology, the utility model discloses a non-polarity high-voltage LED light strip, including a circuit board, on which a plurality of LED lamp beads are arranged along the length direction of the circuit board, two main circuits extending along the length direction of the circuit board are arranged on both sides of the LED lamp beads, and parallel positive-connected light-emitting chips and reverse-connected light-emitting chips are installed in the LED lamp beads. The plurality of LED lamp beads are connected in series to form a plurality of series units with an operating voltage of 220V, and the plurality of series units are directly connected in parallel to the two main circuits.

[0005] The beneficial effects of the present invention are as follows: since the forward-connected light-emitting chip and the reverse-connected light-emitting chip are arranged in the LED lamp bead, the patch bridge stack can be abandoned to directly connect to the mains, thereby reducing the width of the circuit board; at the same time, it can also eliminate the flicker of the light strip, simplify the manufacturing process, reduce the manufacturing cost and improve the efficacy of the light strip.

[0006] As a further improvement of the present invention: the LED lamp bead includes a forward-connected light-emitting chip and a reverse-connected LED chip, and the series unit is composed of sixty to eighty LED lamp beads and a plurality of resistors connected in series.

[0007] The LED lamp beads contain six positively connected light-emitting chips connected in series and six reversely connected light-emitting chips connected in series. The series unit is composed of thirteen LED lamp beads connected in series with several resistors. The two main circuits are directly electrically connected to the live and neutral wires of the mains power supply. The circuit board is coated with an insulating adhesive or a sheath that covers the LED lamp beads. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural diagram of the present utility model.

[0009] Figure 2 This is one of the circuit structure diagrams of the present utility model.

[0010] Figure 3 This is the second circuit structure diagram of the present utility model. DETAILED DESCRIPTION

[0011] To further understand the features, technical means, specific objectives, and functions of the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments. The descriptions of the components themselves and the positional relationships between components in this application document (including but not limited to upper, lower, inner, outer, left, right, top, and bottom, etc.) are merely relative relationships based on the positions of the relevant components as shown in the drawings of this application document, and do not constitute an absolute limitation on the scope of protection of the present invention.

[0012] refer to Figure 1 A non-polar high-voltage LED light strip includes a circuit board 1, with multiple LED lamp beads 2 arranged along its length in the center of the circuit board 1. The circuit board 1 includes a back insulation layer, a circuit layer, and a front insulation layer from the back to the front. Two main circuits 11 are provided on the circuit layer, and solder pads 12 are provided on the front insulation layer at positions corresponding to the main circuits 11. The solder pads 12 are used to solder wires to connect to an external power source.

[0013] refer to Figure 2The LED lamp bead 2 is provided with a positive-connected light-emitting chip 2a and a negative-connected light-emitting chip 2b, which are connected in parallel. Two solder pins are provided on the outside of the LED lamp bead, and the positive and negative poles of the positive-connected light-emitting chip 2a and the negative-connected light-emitting chip 2b are electrically connected to the two solder pins, respectively. The LED lamp bead 2 is electrically connected to the two main circuits via the two solder pins. The positive-connected light-emitting chip 2a and the negative-connected light-emitting chip 2b have the same structure. The positive-connected light-emitting chip 2a has its positive pole connected to the live line of the mains power supply and its negative pole connected to the neutral line of the mains power supply, while the negative pole is connected to the neutral line of the mains power supply. The positive-connected light-emitting chip 2a has its positive pole connected to the live line of the mains power supply and its negative pole to the neutral line of the mains power supply, while the negative pole is connected to the neutral line of the mains power supply. The mains power frequency is 50Hz, meaning that the positive and negative poles change 50 times per second. The positive-connected light-emitting chip 2a and the negative-connected light-emitting chip 2b will be alternately lit. Because the light-emitting chip has a certain period of afterglow after power is cut off, and the mains power frequency changes very quickly, after the positive-connected light-emitting chip 2a is powered off, the afterglow has basically not decayed, and the negative-connected light-emitting chip 2b is lit, and vice versa. In this way, during the high-frequency alternating change of the positive and negative poles of the mains electricity, the LED lamp beads 2 will basically not flicker, and the light strip as a whole will basically not have a stroboscopic phenomenon. Since the operating voltage of a single light-emitting chip is 3V, the operating voltage of the LED lamp beads 2 is also 3V. By using seventy LED lamp beads 2 and a number of resistors 3 in series, they can be connected to form a series unit 20 with an operating voltage of 240V. The positive and negative poles of the series unit 20 are respectively connected to the two main circuits 11, and a plurality of parallel series units 20 can be set on the circuit board 1 along its length. In this way, the LED light strip can be cut with one series unit 20 as the minimum length unit, and then the two main circuits 11 can be directly connected to the neutral wire and the live wire of the mains electricity to work.

[0014] refer to Figure 3. As a further improvement of the present invention, the LED lamp bead 2 may also include a plurality of forward-connected light-emitting chips 2a connected in series and a plurality of reverse-connected light-emitting chips 2b connected in series. As mentioned above, the operating voltage of a single light-emitting chip is 3V. After the plurality of light-emitting chips are connected in series, the operating voltage of the LED lamp bead is a multiple of 3V. In this way, the number of LED lamp beads connected in series in the series unit 20 with the same operating voltage of 220V can be smaller. For example, when two light-emitting chips are connected in series, the operating voltage of a single LED lamp bead is 6V, and the series unit 20 can use about 35 LED lamp beads connected in series; when three light-emitting chips are connected in series, the operating voltage of a single LED lamp bead is 9V, and the series unit 20 can use about 27 LED lamp beads connected in series, and so on. In this way, the length of the series unit 20 can be shortened to shorten the minimum cutting length of the light strip; the welding amount of the LED lamp beads can also be reduced to simplify the manufacturing process. However, the price of LED lamp beads increases with the number of light-emitting chips. As an optimal solution to balance the cost of LED lamp beads and the manufacturing process of the light strip, six forward-connected light-emitting chips 2a and six reverse-connected light-emitting chips 2b can be connected in series. In this way, the operating voltage of a single LED lamp bead is 18V, and each series unit of 20 can use thirteen LED lamp beads 2 and several resistors in series. To increase the safety of the light strip, the circuit board 1 is coated with an insulating glue covering the LED lamp beads or a sheath 4 that wraps the LED lamp beads.

[0015] Since the positive-connected light-emitting chip and the reverse-connected light-emitting chip are arranged in the LED lamp bead, the patch bridge stack can be abandoned to directly connect to the mains, thereby reducing the width of the circuit board; at the same time, it can also basically eliminate the flicker of the light strip, simplify the manufacturing process, reduce the manufacturing cost and improve the efficacy of the light strip.

[0016] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A non-polar high-voltage LED light strip, characterized by: It includes a circuit board, on which are arranged a plurality of LED lamp beads along its length direction, two main circuits extending along the length direction of the circuit board are arranged on both sides of the LED lamp beads, parallel positive-connected light-emitting chips and reverse-connected light-emitting chips are installed in the LED lamp beads, and the plurality of LED lamp beads are connected in series to form a plurality of series units with an operating voltage of 220V, and the plurality of series units are directly connected in parallel to the two main circuits.

2. The non-polar high-voltage LED light strip according to claim 1, characterized in that: The LED lamp bead includes a forward-connected light-emitting chip and a reverse-connected light-emitting chip, and the series unit is composed of sixty to eighty LED lamp beads and a plurality of resistors connected in series.

3. The non-polar high-voltage LED light strip according to claim 1, characterized in that: The LED lamp bead includes six positive-connected light-emitting chips connected in series and six reverse-connected light-emitting chips connected in series. The series unit is composed of thirteen LED lamp beads and several resistors connected in series.

4. The non-polar high-voltage LED light strip according to claim 1, characterized in that: The two main circuits are directly electrically connected to the live wire and the neutral wire of the commercial power supply.

5. The non-polar high-voltage LED light strip according to claim 1, characterized in that: The circuit board is coated with insulating glue covering the LED lamp beads or a skin wrapping the LED lamp beads.

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