CN211630458U

CN211630458U - LED lamp strip drive circuit and lamp strip thereof

Info

Publication number: CN211630458U
Application number: CN202020057336.2U
Authority: CN
Inventors: 曹关胜
Original assignee: Zhongshan Junsheng Lighting Technology Co ltd
Current assignee: Zhongshan Junsheng Lighting Technology Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-10-02
Anticipated expiration: 2030-01-10

Abstract

The utility model discloses a LED lamp area drive circuit and lamp area thereof, LED lamp area drive circuit, including the LED lamp area drive unit of a plurality of series connections, LED lamp area drive unit includes: the rectifier bridge is used for converting 220 alternating current into direct current input; an LED series circuit as a light emitting unit; and the LED series circuit is connected between the positive electrode of the rectifier bridge and the constant current output end of the high-voltage linear LED constant current driving chip, and an adjusting resistor R2 is connected between the output current setting end of the high-voltage linear LED constant current driving chip and the negative electrode of the rectifier bridge. According to the LED lamp strip driving circuit and the lamp strip thereof, the LED lamp strip driving units are connected in series, each LED lamp strip driving unit is provided with the high-voltage linear LED constant-current driving chip and used as the driving unit for the LED series circuit, and therefore the LED lamp strip driving circuit and the lamp strip thereof can achieve the purposes that each LED lamp strip driving unit is consistent in brightness, low in power consumption and capable of cutting the length according to the field requirement, and the length of the LED lamp strip driving unit can be cut by 20 centimeters.

Description

LED lamp strip drive circuit and lamp strip thereof

Technical Field

The utility model relates to a lamps and lanterns illumination field, in particular to LED lamp area drive circuit and lamp area thereof.

Background

The LED lamp strip is deeply loved by people because of the advantages of low energy consumption, long service life and safe use, and the LED lamp strip with various shapes and styles is developed in the market. The product is widely used for product showcases, storefront doors, ultrathin lamp box backlight sources, hotel KTV scenes, outdoor brightening, household ceilings, ceiling vestibule decoration and the like. However, the length of the current low-voltage LED lamp strip is limited, which brings great inconvenience to purchase and installation; meanwhile, the existing lamp strip is large in circuit loss because the resistor and the LED lamp beads are connected in series in the wires on the circuit, and uneven light emission is easily caused by voltage drop on the circuit, and the brightness is lower and lower along with the lengthening of the lamp strip, so that the cutting of the length of 0.5 meter or 1 meter can only be realized. Therefore, the market needs to develop a high-voltage constant-current LED lamp strip which has consistent brightness and low power consumption and can be cut to length according to the field requirement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a LED lamp area drive circuit and lamp area thereof can realize that luminance is unanimous, the low power dissipation, can tailor length according to the on-the-spot demand.

According to the utility model discloses LED lamp area drive circuit of first aspect embodiment, LED lamp area drive unit including a plurality of series connections, LED lamp area drive unit includes: the rectifier bridge is used for converting the 220V alternating current into direct current input; an LED series circuit as a light emitting unit; the high-voltage linear LED constant current driving chip is provided with an output current setting end, a constant current output end and a grounding end, the LED series circuit is connected between the positive electrode of the rectifier bridge and the constant current output end of the high-voltage linear LED constant current driving chip, and an adjusting resistor R2 is connected between the output current setting end of the high-voltage linear LED constant current driving chip and the negative electrode of the rectifier bridge.

According to the utility model discloses some embodiments of the first aspect, be connected with the anti-surge component between the constant current output of the linear LED constant current driver chip of high pressure and the earthing terminal.

According to some embodiments of the first aspect of the present invention, the anti-surge element is a patch capacitor C1.

According to some embodiments of the first aspect of the present invention, a discharge resistor R1 is connected between the positive pole and the negative pole of the rectifier bridge.

According to some embodiments of the first aspect of the present invention, the high voltage linear LED constant current driving chip is ICNE2521 DE/DS/DT-a.

According to the utility model discloses some embodiments of the first aspect, LED series circuit is established ties by a plurality of LED subunits and is formed, the LED subunit is two parallelly connected LED lamp pearls.

According to the utility model discloses a lamp area of second aspect embodiment, be in including the area body and setting the internal LED lamp area drive circuit in area.

The utility model has the advantages that: according to the LED lamp strip driving circuit and the lamp strip thereof, the plurality of LED lamp strip driving units which are connected in series are arranged, each LED lamp strip driving unit is provided with the high-voltage linear LED constant-current driving chip to serve as the driving unit for the LED series circuit, and therefore the LED lamp strip driving circuit and the lamp strip thereof can achieve the purposes that each LED lamp strip driving unit has consistent brightness and low power consumption, and can be cut to the length of 20 centimeters according to the field requirement; the output current setting end of the high-voltage linear LED constant current driving chip is provided with an adjusting resistor R2, the current can be adjusted randomly within the range of 3 mA-100 mA, and the current accuracy of the chip can reach +/-3%.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a circuit diagram of the LED lamp strip driving circuit of the present invention;

fig. 2 is a circuit diagram of the LED series circuit of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, which is an embodiment of the present invention, the LED lamp strip driving circuit includes a plurality of LED lamp strip driving units 100 connected in series, where the LED lamp strip driving unit 100 includes: the rectifier bridge 110 is used for converting 220V alternating current into direct current input; an LED series circuit 120 as a light emitting unit; the high-voltage linear LED constant current driving chip 130 has an output current setting end ISET, a constant current output end Vout, and a ground end GND, the LED series circuit 120 is connected between the positive electrode of the rectifier bridge 110 and the constant current output end of the high-voltage linear LED constant current driving chip 130, and an adjusting resistor R2 is connected between the output current setting end of the high-voltage linear LED constant current driving chip 130 and the negative electrode of the rectifier bridge 110.

According to the LED lamp strip driving circuit and the lamp strip thereof, the plurality of LED lamp strip driving units 100 which are connected in series are arranged, each LED lamp strip driving unit 100 is provided with the high-voltage linear LED constant current driving chip 130 to serve as the driving unit 100 for the LED series circuit 120, and therefore the LED lamp strip driving circuit and the lamp strip thereof can be realized, each LED lamp strip driving unit 100 is consistent in brightness and low in power consumption, and the cutting length can be cut according to the field requirement, so that the cutting length of 20 cm can be achieved; the output current setting end of the high-voltage linear LED constant current driving chip 130 is provided with an adjusting resistor R2, the current can be adjusted randomly within the range of 3 mA-100 mA, and the current accuracy of the chip can reach +/-3%. The high-voltage linear LED constant current driving chip 130 is internally provided with a negative temperature compensation function, so that the source regulation rate of a linear power supply system is improved; the built-in over-temperature adjusting function can effectively prevent the damage caused by sudden temperature change of the system.

In some embodiments of the first aspect of the present invention, an anti-surge element is connected between the constant current output end of the high-voltage linear LED constant current driving chip 130 and the grounding end, so as to absorb the surge impact of the power grid and effectively protect the high-voltage linear LED constant current driving chip 130.

In some embodiments of the first aspect of the present invention, the anti-surge element is a chip capacitor C1, or other known anti-surge element.

In some embodiments of the first aspect of the present invention, a discharge resistor R1 is connected between the positive electrode and the negative electrode of the rectifier bridge 110, so that the electric energy which is redundant when the power grid fluctuates can be released, and the components on the working circuit can be effectively protected.

In some embodiments of the first aspect of the present invention, the high voltage linear LED constant current driving chip 130 is ICNE2521 DE/DS/DT-a.

In some embodiments of the first aspect of the present invention, the LED series circuit 120 is formed by connecting 12 LED subunits in series, and the LED subunits are two parallel LED lamp beads.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a LED lamp area drive circuit, includes the LED lamp area drive unit of a plurality of series connection, its characterized in that, LED lamp area drive unit includes:

the rectifier bridge is used for converting the 220V alternating current into direct current input;

an LED series circuit as a light emitting unit;

the high-voltage linear LED constant current driving chip is provided with an output current setting end, a constant current output end and a grounding end, the LED series circuit is connected between the positive electrode of the rectifier bridge and the constant current output end of the high-voltage linear LED constant current driving chip, and an adjusting resistor R2 is connected between the output current setting end of the high-voltage linear LED constant current driving chip and the negative electrode of the rectifier bridge.

2. The LED lamp strip driving circuit according to claim 1, wherein an anti-surge element is connected between a constant current output end of the high-voltage linear LED constant current driving chip and a ground end.

3. A LED strip drive circuit as claimed in claim 2, wherein the anti-surge element is a chip capacitor C1.

4. The LED lamp strip driving circuit according to claim 1, wherein a discharge resistor R1 is connected between the positive electrode and the negative electrode of the rectifier bridge.

5. The LED lamp strip driving circuit according to claim 1, wherein the high-voltage linear LED constant current driving chip is ICNE2521 DE/DS/DT-A.

6. A LED strip drive circuit according to claim 1, wherein the LED series circuit is formed by a plurality of LED subunits connected in series, the LED subunits being two LED beads connected in parallel.

7. A light strip comprising a strip body and the LED light strip driving circuit as claimed in any one of claims 1 to 6 disposed in the strip body.