Resistance-free LED lamp strip control system

Abstract

The utility model discloses a resistance-free LED lamp strip control system, which comprises a lamp strip, a constant-voltage driving module and a constant-current driving module, the lamp strip comprises a substrate, a positive electrode connecting wire, a negative electrode connecting wire and a plurality of LED lamp beads, the positive electrode connecting wire and the negative electrode connecting wire are arranged on the substrate, and the LED lamp beads are arranged on the substrate and connected between the positive electrode connecting wire and the negative electrode connecting wire in series; the constant-voltage driving module is connected to a power supply, and the output end of the constant-voltage driving module is connected with the anode connecting line and the cathode connecting line and used for outputting direct-current voltage to the LED lamp beads; the constant-current driving module is connected to a power supply, and the output end of the constant-current driving module is connected with the positive electrode connecting line and the negative electrode connecting line for outputting driving current to the LED lamp beads; by means of the structure, two more LED lamp beads can be additionally arranged on each LED branch circuit compared with an LED lamp strip with a resistor under the same power supply condition, so that the overall lighting effect of the lamp strip is improved, and the LED lamp strip has very good practicability.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures, and in particular to a resistorless LED strip control system. Background Technology

[0002] Current LED strip drivers typically employ constant voltage driving, setting the output power based on the resistance value on the LED strip. However, the presence of resistance prevents the input voltage from being fully applied to the LED light source, resulting in low luminous efficacy. This is because PLED = Pinput - Presistance, where PLED is the effective power of the light source, Pinput is the total power of the LED strip, and Presistance is the power loss due to the resistance. Because of the resistance, a portion of the output power is consumed by the LED strip's resistance, becoming heat loss and thus reducing the luminous efficacy. Therefore, a resistor-free LED strip control system is urgently needed to solve these problems. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a resistorless LED strip control system.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a resistorless LED strip control system, including a strip, a constant voltage driving module and a constant current driving module;

[0005] The light strip includes a substrate, a positive electrode connection wire, a negative electrode connection wire, and several LED beads. The positive electrode connection wire and the negative electrode connection wire are disposed on the substrate, and the LED beads are disposed on the substrate and connected in series between the positive electrode connection wire and the negative electrode connection wire.

[0006] The constant voltage drive module is connected to the power supply and its output terminal is connected to the positive and negative connection lines respectively, and is used to output DC voltage to the LED beads.

[0007] The constant current drive module is connected to the power supply and its output terminal is connected to the positive and negative connection lines respectively, and is used to output drive current to the LED beads.

[0008] As one of the preferred embodiments of this utility model, the constant current drive module includes a step-down circuit, a main control circuit, and a constant current drive circuit.

[0009] The input terminal of the step-down circuit is connected to the power supply;

[0010] The main control circuit is connected to the output of the step-down circuit and receives the dimming signal to receive and identify the dimming signal.

[0011] The constant current drive circuit is connected to the output terminal of the step-down circuit and the main control circuit respectively, and the positive and negative connection lines are connected to the output terminal of the constant current drive circuit.

[0012] The main control circuit can provide driving current to the LED beads through the constant current drive circuit according to the dimming signal.

[0013] As one of the preferred embodiments of this utility model, the step-down circuit includes a resistor R1, a capacitor EC1, and a step-down chip U10. One end of the resistor R1 is connected to the power supply, and the other end of the resistor R1 is connected to one end of the capacitor EC1 and the IN terminal of the step-down chip U10. The other end of the capacitor EC1 and the GND terminal of the step-down chip U10 are grounded, and the OUT terminal of the step-down chip U10 is connected to the subsequent circuit.

[0014] As one of the preferred embodiments of this utility model, a resistorless LED strip control system further includes a wireless receiving circuit connected to the step-down circuit and the main control circuit respectively, for receiving and processing wireless dimming signals.

[0015] As one of the preferred embodiments of this utility model, a resistorless LED strip control system further includes a 0-10V dimming processing circuit connected to the step-down circuit and the main control circuit respectively, for receiving and processing 0-10V dimming signals.

[0016] The beneficial effects of this utility model are as follows: A resistorless LED strip control system includes a strip, a constant voltage driving module, and a constant current driving module. The strip includes a substrate, a positive terminal connecting wire, a negative terminal connecting wire, and several LED beads. The positive and negative terminal connecting wires are disposed on the substrate, and the LED beads are disposed on the substrate and connected in series between the positive and negative terminal connecting wires. The constant voltage driving module is connected to a power supply, and its output terminals are respectively connected to the positive and negative terminal connecting wires to output DC voltage to the LED beads. The constant current driving module is connected to a power supply, and its output terminals are respectively connected to the positive and negative terminal connecting wires to output driving current to the LED beads. With the above structure, under the same power supply conditions, two more LED beads can be added to each LED branch than with a resistive LED strip, thereby increasing the overall luminous efficacy of the strip and making it highly practical. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of a resistorless LED strip control system.

[0019] Figure 2 This is the circuit schematic of a step-down circuit;

[0020] Figure 3 This is a partial circuit schematic of the constant current drive module;

[0021] Figure 4 This is the circuit schematic of a constant current drive circuit;

[0022] Figure 5 This is a simplified structural diagram of the LED strip. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Reference Figures 1 to 5 A resistorless LED strip control system includes a strip 10, a constant voltage drive module 20, and a constant current drive module 30.

[0028] The light strip 10 includes a substrate 11, a positive electrode connection line 12, a negative electrode connection line 13, and a number of LED beads 14. The positive electrode connection line 12 and the negative electrode connection line 13 are disposed on the substrate 11, and the LED beads 14 are disposed on the substrate 11 and connected in series between the positive electrode connection line 12 and the negative electrode connection line 13.

[0029] The constant voltage drive module 20 is connected to a power supply and its output terminal is connected to the positive terminal connection line 12 and the negative terminal connection line 13 respectively, for outputting DC voltage to the LED lamp bead 14.

[0030] The constant current drive module 30 is connected to a power supply and its output terminal is connected to the positive connection line 12 and the negative connection line 13 respectively, and is used to output drive current to the LED lamp bead 14.

[0031] In this invention, the LED light strip 10 is provided with multiple LED beads 14 located on the substrate 11 and connected to the positive terminal connection line 12 and the negative terminal connection line 13. The constant voltage driving module 20 converts the AC voltage into a constant DC voltage suitable for the LED beads 14. The constant current driving module 30 provides a stable driving current for the LED beads 14, eliminating the need for resistors to control the operating current of the LED light strip. At the same time, it converts the power loss on the resistor into effective operating power of the LED beads 14, thereby increasing the luminous efficacy. The advantage of this invention is that, under the same power supply conditions, it can add two more LED beads to each LED branch than an LED light strip with resistors, thereby increasing the overall luminous efficacy of the light strip and making it very practical.

[0032] As a preferred embodiment of the constant current drive module 30, the constant current drive module 30 includes a step-down circuit 31, a main control circuit 32, and a constant current drive circuit 33.

[0033] The input terminal of the step-down circuit 31 is connected to the power supply;

[0034] The output terminal of the main control circuit 32 is connected to the output terminal of the step-down circuit 31 and is connected to the dimming signal for receiving and identifying the dimming signal.

[0035] The constant current drive circuit 33 is connected to the output terminal of the step-down circuit 31 and the main control circuit 32 respectively, and the positive connection line 12 and the negative connection line 13 are connected to the output terminal of the constant current drive circuit 33.

[0036] The step-down circuit 31 steps down the input voltage and outputs a stable 5V voltage to provide the working voltage for the main control circuit 32 and the constant current drive circuit 33. The constant current drive circuit 33 can output a constant drive current. Specifically, the main control circuit 32 can provide the drive current to the LED bead 14 through the constant current drive circuit 33 according to the dimming signal.

[0037] In a preferred embodiment of the step-down circuit 31, the step-down circuit 31 includes a resistor R1, a capacitor EC1, and a step-down chip U10. One end of the resistor R1 is connected to the power supply, and the other end of the resistor R1 is connected to one end of the capacitor EC1 and the IN terminal of the step-down chip U10. The other end of the capacitor EC1 and the GND terminal of the step-down chip U10 are grounded, and the OUT terminal of the step-down chip U10 is connected to the subsequent circuit. Among them, the capacitor EC1 and the resistor R1 constitute the input filter circuit of the step-down chip U10, and the step-down chip U10 reduces the input voltage and outputs a stable 5V voltage to provide the working voltage for the subsequent circuit.

[0038] As a first embodiment of the dimming signal, a resistorless LED strip control system further includes a wireless receiving circuit 34 connected to the step-down circuit 31 and the main control circuit 32 respectively, for receiving and processing wireless dimming signals; wherein, the wireless receiving circuit 34 preferably includes a 433 wireless receiving chip of model SA6531 and its supporting circuit, which can receive dimming signals wirelessly and send them to the main control circuit 32.

[0039] As a second embodiment of the dimming signal, a resistorless LED strip control system further includes a 0-10V dimming processing circuit 35 connected to the step-down circuit 31 and the main control circuit 32 respectively, for receiving and processing the 0-10V dimming signal.

[0040] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A non-resistive LED light strip control system, characterized by: The lamp strip (10), the constant voltage driving module (20) and the constant current driving module (30) are included. The lamp strip (10) includes a substrate (11), a positive connection line (12), a negative connection line (13) and a plurality of LED lamp beads (14), the positive connection line (12) and the negative connection line (13) are arranged on the substrate (11), and the LED lamp beads (14) are arranged on the substrate (11) and are connected in series between the positive connection line (12) and the negative connection line (13). The constant voltage driving module (20) is connected to a power supply and the output ends thereof are connected to the positive connection line (12) and the negative connection line (13) respectively, for outputting a direct current voltage to the LED lamp beads (14). The constant current driving module (30) is connected to a power supply and the output ends thereof are connected to the positive connection line (12) and the negative connection line (13) respectively, for outputting a driving current to the LED lamp beads (14).

2. The non-resistive LED light strip control system of claim 1, wherein: The constant current driving module (30) includes a step-down circuit (31), a main control circuit (32) and a constant current driving circuit (33). The input end of the step-down circuit (31) is connected to a power supply. The main control circuit (32) is connected to the output end of the step-down circuit (31) and is connected to a dimming signal, for receiving and identifying the dimming signal. The constant current driving circuit (33) is connected to the output end of the step-down circuit (31) and the main control circuit (32) respectively, and the positive connection line (12) and the negative connection line (13) are connected to the output end of the constant current driving circuit (33). The main control circuit (32) can provide a driving current for the LED lamp beads (14) through the constant current driving circuit (33) according to the dimming signal.

3. A resistance-free LED light strip control system according to claim 2, characterized in that: The step-down circuit (31) includes a resistor R1, a capacitor EC1 and a step-down chip U10, one end of the resistor R1 is connected to a power supply, the other end of the resistor R1 is connected to one end of the capacitor EC1 and the IN end of the step-down chip U10 respectively, the other end of the capacitor EC1 and the GND end of the step-down chip U10 are grounded, and the OUT end of the step-down chip U10 is connected to a subsequent circuit.

4. The non-resistive LED light strip control system of claim 2, wherein: A wireless receiving circuit (34) connected to the step-down circuit (31) and the main control circuit (32) respectively is further included, for receiving and processing a wireless dimming signal.

5. The non-resistive LED light strip control system of claim 2, wherein: A 0-10V dimming processing circuit (35) connected to the step-down circuit (31) and the main control circuit (32) respectively is further included, for receiving and processing a 0-10V dimming signal.

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