LED light bar integrated with multiple LED light-emitting circuits and driving circuit of LED light bar

Abstract

The utility model discloses an LED light bar integrated with a plurality of LED light-emitting circuits and a drive circuit thereof, the LED light bar comprises an integrated circuit wafer and n LED light-emitting circuits with different and same light-emitting colors, the working voltages of the LED light-emitting circuits are different, the integrated circuit wafer is a multi-output linear constant current circuit and is provided with n output ends and a cathode, and the n output ends are connected with the cathode. The n output ends of the integrated circuit wafer are connected with the negative electrodes of the n LED light-emitting circuits in a one-to-one correspondence mode, the positive electrodes of the n LED light-emitting circuits are connected with the positive electrode of the LED light bar integrating the multiple LED light-emitting circuits, and the negative electrode of the integrated circuit wafer is connected with the negative electrode of the LED light bar integrating the multiple LED light-emitting circuits. The LED lamp bar has the advantages that the LED lamp bar is only provided with two electrodes and can be driven by the driving circuit, and the problems that the complexity of the machining technology is increased, the machining efficiency is reduced and the machining cost is increased due to the fact that the number of the electrodes is large can be solved.

Description

Technical Field

[0001] The utility model relates to an LED light bar, in particular to an LED light bar integrating multiple LED light emitting circuits and a driving circuit thereof. Background Art

[0002] Existing LED lamps with color adjustment functions usually need to include two or more independent LED light-emitting circuits, and the light-emitting colors of these LED light-emitting circuits are different. The color of the mixed light formed by the simultaneous light emission of these LED light-emitting circuits changes with the ratio of the light-emitting intensities of these LED light-emitting circuits. Each LED light-emitting circuit has a positive electrode and a negative electrode. When a current is connected between its positive electrode and negative electrode, the LED light-emitting circuit emits light, and its light-emitting intensity is proportional to the magnitude of the connected current. When multiple LED light-emitting circuits with different light-emitting colors are combined to form an LED light-emitting module, it is required to be able to independently adjust the light-emitting intensity of each LED light-emitting circuit. At this time, at least one of the positive electrode and the negative electrode of each LED light-emitting circuit needs to be independent and not connected to the positive electrode or negative electrode of other LED light-emitting circuits. Therefore, the LED light-emitting module composed of n LED light-emitting circuits has at least n+1 electrodes set to lead out the positive electrode or negative electrode of the n LED light-emitting circuits, and n is an integer greater than or equal to 2.

[0003] Existing LED light strips integrating multiple LED light-emitting circuits usually include a strip-shaped substrate and an LED light-emitting module arranged on the substrate and composed of multiple LED light-emitting circuits with different light-emitting colors. The LED light strip has at least n+1 electrodes, which are respectively arranged at both ends of the substrate.

[0004] The number of electrodes of existing LED light strips that integrate multiple LED light circuits will increase as the number of LED light circuits inside increases. A large number of electrodes are distributed at both ends of the substrate, and no two electrodes can touch each other, which increases the complexity of the processing technology for setting electrodes at both ends of the substrate, reduces the processing efficiency, and increases the processing cost. It may even be impossible to process. Once the processing fails, the width of the substrate needs to be increased, which further increases the cost. Utility Model Content

[0005] One of the technical problems to be solved by the present invention is to provide an LED light strip integrating multiple LED light-emitting circuits with only two electrodes, which can avoid the problems of increased processing complexity, reduced processing efficiency and increased processing costs caused by a large number of electrodes.

[0006] The utility model solves one of the above technical problems by adopting the following technical solution: an LED light strip integrating multiple LED light-emitting circuits, comprising a substrate of a strip-shaped structure and n LED light-emitting circuits of different light-emitting colors arranged on the substrate, wherein n is an integer greater than or equal to 2, each of the LED light-emitting circuits is formed by connecting a number of LED crystals in series, each of the LED light-emitting circuits has a positive electrode and a negative electrode, and when a current is connected between the positive electrode and the negative electrode of the LED light-emitting circuit, the number of LED crystals therein can emit light; the operating voltage of the dth LED light-emitting circuit is recorded as Vd, d=1, 2, ..., n, Vp is less than V(p+1), p=1, 2, ..., n-1; an electrode is respectively arranged at both ends of the substrate, and one electrode is the LED light strip of the LED light strip integrating multiple LED light-emitting circuits; D is the positive electrode of the light bar, and the other electrode is the negative electrode of the LED light bar integrating multiple LED light-emitting circuits; the LED light bar integrating multiple LED light-emitting circuits also includes an integrated circuit wafer, which is a linear constant current circuit with multiple outputs, having n output terminals and a negative electrode. When current flows into the kth output terminal of the integrated circuit wafer, its kth output terminal is connected to its negative electrode, and its 1st output terminal to the k-1th output terminal are all cut off from their negative electrode, k=2, ..., n; the dth output terminal of the integrated circuit wafer is connected to the negative electrode of the dth LED light-emitting circuit, the positive electrodes of the n LED light-emitting circuits are connected to the positive electrode of the LED light bar integrating multiple LED light-emitting circuits, and the negative electrode of the integrated circuit wafer is connected to the negative electrode of the LED light bar integrating multiple LED light-emitting circuits.

[0007] The integrated circuit chip also has a current setting end, and the LED light strip integrating multiple LED light-emitting circuits also includes a setting resistor for setting the current size flowing into each output end of the integrated circuit chip, one end of the setting resistor is connected to the current setting end of the integrated circuit chip, and the other end of the setting resistor is connected to the negative pole of the LED light strip integrating multiple LED light-emitting circuits.

[0008] The LED light strip integrating multiple LED light-emitting circuits is an RGBWC light strip, n=5, the light color of the first LED light-emitting circuit is red, the light color of the second LED light-emitting circuit is green, the light color of the third LED light-emitting circuit is blue, the light color of the fourth LED light-emitting circuit is warm white, and the light color of the fifth LED light-emitting circuit is cool white; the integrated circuit wafer adopts a linear constant current wafer of a five-segment linear constant current integrated circuit of model SM2255E, and the linear constant current wafer has a Vin pad, a D1 pad, a D2 pad, a D3 pad, a D4 pad, a Rext pad and a GND pad, The Vin pad of the linear constant current crystal is the first output end of the integrated circuit crystal, the D1 pad of the linear constant current crystal is the second output end of the integrated circuit crystal, the D2 pad of the linear constant current crystal is the third output end of the integrated circuit crystal, the D3 pad of the linear constant current crystal is the fourth output end of the integrated circuit crystal, the D4 pad of the linear constant current crystal is the fifth output end of the integrated circuit crystal, the GND pad of the linear constant current crystal is the negative electrode of the integrated circuit crystal, and the Rext pad of the linear constant current crystal is the current setting end of the integrated circuit crystal.

[0009] Compared with the prior art, the LED light strip of the utility model has the advantages that each LED light-emitting circuit is formed by connecting a number of LED wafers in series, each LED light-emitting circuit has a positive electrode and a negative electrode, when current is connected between the positive electrode and the negative electrode of the LED light-emitting circuit, a number of LED wafers therein can emit light, and the operating voltage of the d-th LED light-emitting circuit is recorded as Vd, d = 1, 2, ..., n, Vp is less than V(p+1), p = 1, 2, ..., n-1; an electrode is provided at each end of the substrate, one electrode is the positive electrode of the LED light strip integrating multiple LED light-emitting circuits, and the other electrode is the positive electrode of the LED light strip integrating multiple LED light-emitting circuits. The LED light strip with integrated multiple LED light circuits also includes an integrated circuit wafer, which is a linear constant current circuit with multiple outputs, having n output terminals and a negative terminal. When current flows into the k-th output terminal of the integrated circuit wafer, its k-th output terminal is connected to its negative terminal, and its 1st output terminal to the k-1th output terminal are all cut off from their negative terminal, k=2, ..., n; the d-th output terminal of the integrated circuit wafer is connected to the negative terminal of the d-th LED light circuit, the positive terminals of the n LED light circuits are connected to the positive terminal of the LED light strip with integrated multiple LED light circuits, and the negative terminal of the integrated circuit wafer is connected to the positive terminal of the LED light strip with integrated multiple LED light circuits. The integrated circuit wafer is connected to the cathode of the LED light strip that integrates multiple LED light-emitting circuits; when the voltage loaded between the anode and cathode of the LED light strip that integrates multiple LED light-emitting circuits is V1, the first output terminal of the integrated circuit wafer is connected to its cathode, driving the first LED light-emitting circuit to emit light, because the working voltage of the second LED light-emitting circuit to the nth LED light-emitting circuit is greater than V1, at this time, even if the second output terminal to the nth output terminal of the integrated circuit wafer are all connected to their cathode, the second LED light-emitting circuit to the nth LED light-emitting circuit cannot emit light ... When Vq is Vq, and q is an integer greater than or equal to 2 and less than n, a current flows into the qth output terminal of the integrated circuit wafer, which is connected to its cathode, driving the qth LED light-emitting circuit to emit light, the 1st output terminal to the q-1th output terminal of the integrated circuit wafer are all cut off from their cathodes, the 1st LED light-emitting circuit to the q-1th LED light-emitting circuit cannot emit light, and the operating voltages of the q+1th LED light-emitting circuit to the nth LED light-emitting circuit are all greater than Vq, even if the q+1th output terminal to the nth output terminal of the integrated circuit wafer are all connected to their cathodes, the q+1th LED light-emitting circuit to the nth LED light-emitting circuit cannot emit light;When the voltage loaded between the positive and negative electrodes of the LED light strip integrating multiple LED light-emitting circuits is Vn, current flows into the nth output terminal of the integrated circuit wafer, which is connected to its negative electrode, driving the nth LED light-emitting circuit to emit light, and the 1st output terminal to the n-1th output terminal of the integrated circuit wafer are all cut off from their negative electrodes, and the 1st LED light-emitting circuit to the n-1th LED light-emitting circuit cannot emit light; therefore, the LED light strip integrating multiple LED light-emitting circuits of the utility model has only two electrodes, the positive electrode and the negative electrode, and the nth LED light-emitting circuit can be controlled by controlling the voltage connected between the positive electrode and the negative electrode and the connection time. The LED light-emitting circuits independently emit light and light-emitting time, thereby controlling the ratio of the light-emitting time of the n LED light-emitting circuits, adjusting the average current and light-emitting intensity of the n LED light-emitting circuits, and realizing color adjustment. Since only two electrodes need to be set, the number of electrodes is small, so the processing requirements for setting electrodes at both ends of the substrate can be reduced, the processing efficiency is improved, and the processing cost is reduced. The LED wafer connection of each LED light-emitting circuit can meet the wire pressing connection process requirements of the prior art, and the connection between the integrated circuit wafer, the LED wafer and the electrode can be completed without routing on the substrate, which is convenient for large-scale production. ;

[0010] The second technical problem to be solved by the utility model is to provide a driving circuit for an LED light bar integrating multiple LED light circuits. The driving circuit can be used to drive an LED light bar integrating multiple LED light circuits having only two electrodes.

[0011] The technical solution adopted by the utility model to solve the second technical problem mentioned above is: a driving circuit of an LED light strip integrating multiple LED light-emitting circuits, which is used to drive the LED light strip integrating multiple LED light-emitting circuits, and has a positive output end and a negative output end. The positive output end of the driving circuit is connected to the positive electrode of the LED light strip integrating multiple LED light-emitting circuits, and the negative output end of the driving circuit is connected to the negative electrode of the LED light strip integrating multiple LED light-emitting circuits. The positive output end and the negative output end of the driving circuit can periodically output n levels of voltage, and the n levels of voltage correspond one-to-one to the working voltages of the n LED light-emitting circuits.

[0012] The driving circuit includes a multi-channel constant voltage power supply, an n-choose-one switch circuit and a switch control circuit. The multi-channel constant voltage power supply has n output terminals and a cathode. The s-th output terminal of the multi-channel constant voltage power supply is used to output the working voltage Vs of the s-th LED light circuit of the LED light strip integrating multiple LED light circuits, s=1, 2, ..., n; the n-choose-one switch circuit has n input terminals, an output terminal, n signal input terminals and a cathode. The s-th input terminal of the n-choose-one switch circuit corresponds to its s-th signal input terminal. The s-th signal input terminal of the n-choose-one switch circuit is used to access and control its s-th output terminal. The switch control circuit has n signal output terminals and a negative electrode, and the sth signal output terminal of the switch control circuit is used to output an electrical signal that controls whether the sth input terminal and the output terminal of the n-to-one switch circuit are conductive; the sth output terminal of the multi-channel constant-voltage power supply is connected to the sth input terminal of the n-to-one switch circuit, the sth signal input terminal of the n-to-one switch circuit is connected to the sth signal output terminal of the switch control circuit, and the negative electrode of the switch control circuit, the negative electrode of the n-to-one switch circuit and the negative electrode of the multi-channel constant-voltage power supply are connected.

[0013] The n-to-one switch circuit includes n switch units, each of which has an input end, an output end, a signal input end and a cathode. The signal input end of the switch unit is used to connect to a high level 1 or a low level 0. When a high level 1 is connected, its input end and output end are turned on, and when a low level 0 is connected, its input end and output end are turned off; the input end of the sth switch unit is the sth input end of the n-to-one switch circuit, the signal input end of the sth switch unit is the sth signal input end of the n-to-one switch circuit, the output ends of the n switch units are connected together, and their connection end is the output end of the n-to-one switch circuit, and the cathodes of the n switch units are connected together, and their connection end is the cathode of the n-to-one switch circuit.

[0014] Each of the switch units includes a first resistor, a second resistor, a third resistor, a first diode, a first transistor and a second transistor. The first diode is a rectifier diode. One end of the first resistor is the signal input end of the switch unit. The other end of the first resistor is connected to the base of the first transistor. The emitter of the first transistor is the negative electrode of the switch unit. The collector of the first transistor is connected to one end of the third resistor. The other end of the third resistor and one end of the second resistor are connected to the base of the second transistor. The emitter of the second transistor is connected to the other end of the second resistor, and the connection end is the input end of the switch unit. The collector of the second transistor is connected to the positive electrode of the first diode. The negative electrode of the first diode is the output end of the switch unit.

[0015] Compared with the prior art, the advantage of the driving circuit of the utility model is that by changing the time for outputting each voltage level between the positive output terminal and the negative output terminal of the driving circuit, the size of the average current driving n LED light-emitting circuits can be changed, and the luminous intensity and luminous color of the LED light bar integrating multiple LED light-emitting circuits can be set to achieve color adjustment. Therefore, the driving circuit of the utility model can be used to drive the LED light bar integrating multiple LED light-emitting circuits with only two electrodes, so that the number of electrodes of the LED light bar integrating multiple LED light-emitting circuits can be reduced to only two, thereby reducing the processing technology complexity of setting electrodes at both ends of the substrate of the LED light bar integrating multiple LED light-emitting circuits, improving processing efficiency, and reducing processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an LED light bar integrating multiple LED light-emitting circuits of the present invention;

[0017] Figure 2 A circuit diagram of an LED light bar integrating multiple LED light-emitting circuits of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of a driving circuit integrating multiple LED light-emitting circuits of the utility model;

[0019] Figure 4 The utility model is a circuit diagram of a switch unit of a driving circuit integrating multiple LED lighting circuits. DETAILED DESCRIPTION

[0020] The utility model discloses an LED light bar integrating multiple LED light emitting circuits. The LED light bar integrating multiple LED light emitting circuits of the utility model is further described in detail below in conjunction with the embodiments of the drawings.

[0021] Embodiment 1: Figure 1 As shown, an LED light strip integrating multiple LED light-emitting circuits comprises a substrate 1 of a strip structure and n LED light-emitting circuits of different light-emitting colors arranged on the substrate 1, wherein n is an integer greater than or equal to 2, each LED light-emitting circuit is formed by connecting a number of LED crystals in series, each LED light-emitting circuit has a positive electrode and a negative electrode, and when a current is connected between the positive electrode and the negative electrode of the LED light-emitting circuit, the number of LED crystals therein can emit light; the operating voltage of the d-th LED light-emitting circuit is recorded as Vd, d=1, 2, ..., n, Vp is less than V(p+1), p=1, 2, ..., n-1; an electrode is respectively arranged at both ends of the substrate 1, one electrode is the positive electrode of the LED light strip integrating multiple LED light-emitting circuits, and the other electrode is the positive electrode of the LED light strip integrating multiple LED light-emitting circuits. It is the negative electrode of the LED light strip integrating multiple LED light-emitting circuits; the LED light strip integrating multiple LED light-emitting circuits also includes an integrated circuit wafer U1, which is a linear constant current circuit with multiple outputs, having n output terminals and a negative electrode. When current flows into the kth output terminal of the integrated circuit wafer U1, its kth output terminal is connected to its negative electrode, and its 1st output terminal to the k-1th output terminal are all cut off from their negative electrode, k=2, ..., n; the dth output terminal of the integrated circuit wafer U1 is connected to the negative electrode of the dth LED light-emitting circuit, the positive electrodes of the n LED light-emitting circuits are connected to the positive electrode of the LED light strip integrating multiple LED light-emitting circuits, and the negative electrode of the integrated circuit wafer U1 is connected to the negative electrode of the LED light strip integrating multiple LED light-emitting circuits.

[0022] In this embodiment, when the voltage loaded between the positive and negative electrodes of the LED light strip integrating multiple LED light-emitting circuits is V1, the first output terminal of the integrated circuit wafer U1 is connected to its negative electrode, driving the first LED light-emitting circuit to emit light. Because the operating voltage of the second LED light-emitting circuit to the nth LED light-emitting circuit is greater than V1, at this time, even if the second output terminal to the nth output terminal of the integrated circuit wafer U1 are all connected to their negative electrodes, the second LED light-emitting circuit to the nth LED light-emitting circuit cannot emit light; when the voltage loaded between the positive and negative electrodes of the LED light strip integrating multiple LED light-emitting circuits is Vq, and q is a large value, When Vq is an integer equal to 2 and less than n, current flows into the qth output terminal of the integrated circuit wafer U1, which is connected to its cathode, driving the qth LED light-emitting circuit to emit light. The 1st output terminal to the q-1th output terminal of the integrated circuit wafer U1 are all cut off from their cathodes, and the 1st LED light-emitting circuit to the q-1th LED light-emitting circuit cannot emit light. The operating voltages of the q+1th LED light-emitting circuit to the nth LED light-emitting circuit are all greater than Vq. Even if the q+1th output terminal to the nth output terminal of the integrated circuit wafer U1 are all connected to their cathodes, the q+1th LED light-emitting circuit to the nth LED light-emitting circuit cannot emit light. When the voltage loaded between the positive and negative electrodes of the LED light strip integrating multiple LED light-emitting circuits is Vn, current flows into the nth output terminal of the integrated circuit wafer U1, which is connected to its negative electrode, driving the nth LED light-emitting circuit to emit light, and the 1st output terminal to the n-1th output terminal of the integrated circuit wafer U1 are all cut off from their negative electrodes, and the 1st LED light-emitting circuit to the n-1th LED light-emitting circuit cannot emit light; therefore, the LED light strip integrating multiple LED light-emitting circuits of the utility model has only two electrodes, the positive electrode and the negative electrode, and can be controlled by controlling the voltage connected between the positive electrode and the negative electrode and the connection time. The n LED light-emitting circuits are controlled to emit light and emit light for an independent period of time, thereby controlling the ratio of the light-emitting time of the n LED light-emitting circuits, adjusting the average current and light-emitting intensity of the n LED light-emitting circuits, and realizing color adjustment. Since only two electrodes need to be set and the number of electrodes is very small, the processing requirements for setting electrodes at both ends of the substrate can be reduced, the processing efficiency can be improved, and the processing cost can be reduced. Moreover, the LED wafer connection of each LED light-emitting circuit can meet the wire pressing connection process requirements of the prior art, and the connection between the integrated circuit wafer U1, the LED wafer and the electrode can be completed without routing on the substrate 1, which is convenient for large-scale production.

[0023] Embodiment 2: This embodiment is basically the same as Embodiment 1, except that: Figure 2As shown, in this embodiment, the integrated circuit chip U1 also has a current setting end, and the LED light strip integrating multiple LED light-emitting circuits also includes a setting resistor Ra for setting the current size flowing into each output end of the integrated circuit chip U1, one end of the setting resistor Ra is connected to the current setting end of the integrated circuit chip U1, and the other end of the setting resistor Ra is connected to the negative pole of the LED light strip integrating multiple LED light-emitting circuits.

[0024] In this embodiment, by setting the resistance of the setting resistor Ra, the current connected to the current setting terminal of the integrated circuit chip U1 can be set, thereby controlling the conduction or cutoff between the n output terminals of the integrated circuit chip U1 and its cathode.

[0025] Embodiment 3: This embodiment is basically the same as Embodiment 2, except that: Figure 2 As shown, in this embodiment, the LED light strip integrating multiple LED light-emitting circuits is an RGBWC light strip, n=5, the light color of the first LED light-emitting circuit R-LED is red, the light color of the second LED light-emitting circuit G-LED is green, the light color of the third LED light-emitting circuit B-LED is blue, the light color of the fourth LED light-emitting circuit W-LED is warm white, and the light color of the fifth LED light-emitting circuit C-LED is cold white; the integrated circuit wafer U1 adopts a linear constant current wafer of a five-segment linear constant current integrated circuit of model SM2255E, and the linear constant current wafer has a Vin pad, a D1 pad, and a D2 pad. pad, D3 pad, D4 pad, Rext pad and GND pad, the Vin pad of the linear constant current wafer is the first output terminal of the integrated circuit wafer U1, the D1 pad of the linear constant current wafer is the second output terminal of the integrated circuit wafer U1, the D2 pad of the linear constant current wafer is the third output terminal of the integrated circuit wafer U1, the D3 pad of the linear constant current wafer is the fourth output terminal of the integrated circuit wafer U1, the D4 pad of the linear constant current wafer is the fifth output terminal of the integrated circuit wafer U1, the GND pad of the linear constant current wafer is the negative pole of the integrated circuit wafer U1, and the Rext pad of the linear constant current wafer is the current setting terminal of the integrated circuit wafer U1.

[0026] The utility model also discloses a driving circuit for driving the LED light bar integrating multiple LED light-emitting circuits. The driving circuit of the LED light bar integrating multiple LED light-emitting circuits of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] Embodiment 1: A driving circuit for an LED light strip integrating multiple LED light-emitting circuits, which is used to drive the LED light strip integrating multiple LED light-emitting circuits, has a positive output end and a negative output end, the positive output end of the driving circuit is connected to the positive electrode of the LED light strip integrating multiple LED light-emitting circuits, and the negative output end of the driving circuit is connected to the negative electrode of the LED light strip integrating multiple LED light-emitting circuits, and the positive output end and the negative output end of the driving circuit can periodically output n levels of voltage, and the n levels of voltage correspond one-to-one to the working voltages of the n LED light-emitting circuits.

[0028] In this embodiment, by changing the time for outputting each voltage level between the positive output terminal and the negative output terminal of the driving circuit, the average current driving the n LED light-emitting circuits can be changed, and the luminous intensity and luminous color of the LED light strip integrating multiple LED light-emitting circuits can be set to achieve color adjustment.

[0029] Embodiment 2: This embodiment is basically the same as Embodiment 1, except that: in this embodiment, Figure 3 As shown, the driving circuit includes a multi-channel constant voltage power supply, an n-choose-one switch circuit and a switch control circuit, the multi-channel constant voltage power supply has n output terminals and a negative electrode, the s-th output terminal of the multi-channel constant voltage power supply is used to output the working voltage Vs of the s-th LED light circuit of the LED light strip integrating multiple LED light circuits, s=1, 2, ..., n; the n-choose-one switch circuit has n input terminals, an output terminal, n signal input terminals and a negative electrode, the s-th input terminal of the n-choose-one switch circuit corresponds to its s-th signal input terminal, and the s-th signal input terminal of the n-choose-one switch circuit is used to access the control circuit. The switch control circuit has n signal output terminals and a negative electrode, and the s signal output terminal of the switch control circuit is used to output an electrical signal that controls whether the s input terminal and the output terminal of the n-to-one switch circuit are conductive; the s output terminal of the multi-channel constant voltage power supply is connected to the s input terminal of the n-to-one switch circuit, the s signal input terminal of the n-to-one switch circuit is connected to the s signal output terminal of the switch control circuit, and the negative electrode of the switch control circuit, the negative electrode of the n-to-one switch circuit and the negative electrode of the multi-channel constant voltage power supply are connected.

[0030] In this embodiment, when the n output terminals of the multi-channel constant voltage power supply output corresponding voltages and the n signal output terminals of the switch control circuit output corresponding electrical signals, the n input terminals of the n-to-one switch circuit and its output terminals periodically change the conduction state. In one cycle, the conduction time between its sth input terminal and output terminal corresponds to the electrical signal connected to its sth signal input terminal; when the sth input terminal and its output terminal of the n-to-one switch circuit are turned on, the voltage output by its output terminal is Vs, which can drive the sth LED light-emitting circuit of the LED light bar integrating multiple LED light-emitting circuits to emit light. Therefore, by setting the electrical signals output by the n signal output terminals of the switch control circuit, the time for the output terminal of the n-to-one switch circuit to output the working voltage V1 to Vn can be set, thereby setting the light-emitting time of the n LED light-emitting circuits in the LED light bar integrating multiple LED light-emitting circuits, adjusting its average current and light-emitting intensity, changing the light-emitting color, and realizing the color adjustment function.

[0031] Embodiment 3: This embodiment is basically the same as Embodiment 2, except that: in this embodiment, an n-to-one switching circuit includes n switching units, each switching unit has an input terminal, an output terminal, a signal input terminal and a negative electrode, the signal input terminal of the switching unit is used to connect to a high level 1 or a low level 0, when a high level 1 is connected, its input terminal and output terminal are turned on, when a low level 0 is connected, its input terminal and output terminal are turned off; the input terminal of the sth switching unit is the sth input terminal of the n-to-one switching circuit, the signal input terminal of the sth switching unit is the sth signal input terminal of the n-to-one switching circuit, the output terminals of the n switching units are connected together, and their connection terminals are the output terminals of the n-to-one switching circuit, the negative electrodes of the n switching units are connected together, and their connection terminals are the negative electrodes of the n-to-one switching circuit.

[0032] In this embodiment, by setting the time when the n signal output terminals of the switch control circuit output high level 1 and low level 0, the conduction time of the input terminals and output terminals of the n switch units can be set, that is, the time when the output terminal of the n-select-one switch circuit outputs the working voltage V1 to Vn, thereby enabling the light-emitting time of the n LED light-emitting circuits in the LED light bar that integrates multiple LED light-emitting circuits to be adjusted, thereby enabling the average current and light-emitting intensity of the n LED light-emitting circuits in the LED light bar that integrates multiple LED light-emitting circuits to be adjusted, and setting the light-emitting color of the LED light bar that integrates multiple LED light-emitting circuits to achieve a color adjustment function.

[0033] Embodiment 4: This embodiment is basically the same as Embodiment 3, except that: in this embodiment, Figure 4As shown, each switch unit includes a first resistor R1, a second resistor R2, a third resistor R3, a first diode D1, a first transistor Q1 and a second transistor Q2. The first diode D1 is a rectifier diode. One end of the first resistor R1 is the signal input end of the switch unit. The other end of the first resistor R1 is connected to the base of the first transistor Q1. The emitter of the first transistor Q1 is the negative electrode of the switch unit. The collector of the first transistor Q1 is connected to one end of the third resistor R3. The other end of the third resistor R3 and one end of the second resistor R2 are connected to the base of the second transistor Q2. The emitter of the second transistor Q2 is connected to the other end of the second resistor R2, and the connection end is the input end of the switch unit. The collector of the second transistor Q2 is connected to the positive electrode of the first diode D1, and the negative electrode of the first diode D1 is the output end of the switch unit.

[0034] In this embodiment, when the LED light strip integrating multiple LED light-emitting circuits is an RGBWC light strip, the RGBWC light strip can be controlled to achieve color adjustment, the control method is simple, and the overall structure is simple.

Claims

1. An LED light strip integrating multiple LED light-emitting circuits, comprising a strip-shaped substrate and n LED light-emitting circuits with different light-emitting colors arranged on the substrate, wherein n is an integer greater than or equal to 2, characterized in that Each of the LED light-emitting circuits is formed by connecting a number of LED wafers in series, each of the LED light-emitting circuits has a positive electrode and a negative electrode, and when current is connected between the positive electrode and the negative electrode of the LED light-emitting circuit, a number of LED wafers therein can emit light; the operating voltage of the d-th LED light-emitting circuit is recorded as Vd, d=1, 2, ..., n, Vp is less than V(p+1), p=1, 2, ..., n-1; an electrode is respectively arranged at both ends of the substrate, one electrode is the positive electrode of the LED light bar integrating multiple LED light-emitting circuits, and the other electrode is the negative electrode of the LED light bar integrating multiple LED light-emitting circuits; the integrated multiple LED light-emitting circuits The LED light bar of the optical circuit also includes an integrated circuit wafer, which is a linear constant current circuit with multiple outputs, having n output terminals and a negative electrode. When current flows into the kth output terminal of the integrated circuit wafer, the kth output terminal is connected to its negative electrode, and the 1st output terminal to the k-1th output terminal are all cut off from their negative electrode, k=2, ..., n; the dth output terminal of the integrated circuit wafer is connected to the negative electrode of the dth LED light-emitting circuit, the positive electrodes of the n LED light-emitting circuits are connected to the positive electrode of the LED light bar integrating multiple LED light-emitting circuits, and the negative electrode of the integrated circuit wafer is connected to the negative electrode of the LED light bar integrating multiple LED light-emitting circuits.

2. The LED light strip integrating multiple LED lighting circuits according to claim 1, characterized in that The integrated circuit chip also has a current setting end, and the LED light strip integrating multiple LED light-emitting circuits also includes a setting resistor for setting the current size flowing into each output end of the integrated circuit chip, one end of the setting resistor is connected to the current setting end of the integrated circuit chip, and the other end of the setting resistor is connected to the negative pole of the LED light strip integrating multiple LED light-emitting circuits.

3. The LED light strip integrating multiple LED lighting circuits according to claim 2, characterized in that The invention is an RGBWC light strip, n=5, the luminous color of the first LED luminous circuit is red, the luminous color of the second LED luminous circuit is green, the luminous color of the third LED luminous circuit is blue, the luminous color of the fourth LED luminous circuit is warm white, and the luminous color of the fifth LED luminous circuit is cold white; the integrated circuit wafer adopts a linear constant current wafer of a five-segment linear constant current integrated circuit of model SM2255E, the linear constant current wafer has a Vin pad, a D1 pad, a D2 pad, a D3 pad, a D4 pad, a Rext pad and a GND pad, and the V The in pad is the first output end of the integrated circuit wafer, the D1 pad of the linear constant current wafer is the second output end of the integrated circuit wafer, the D2 pad of the linear constant current wafer is the third output end of the integrated circuit wafer, the D3 pad of the linear constant current wafer is the fourth output end of the integrated circuit wafer, the D4 pad of the linear constant current wafer is the fifth output end of the integrated circuit wafer, the GND pad of the linear constant current wafer is the negative electrode of the integrated circuit wafer, and the Rext pad of the linear constant current wafer is the current setting end of the integrated circuit wafer.

4. A driving circuit for an LED light bar integrating multiple LED light circuits, used to drive the LED light bar integrating multiple LED light circuits as claimed in any one of claims 1 to 3, characterized in that It has a positive output end and a negative output end, the positive output end of the driving circuit is connected to the positive electrode of the LED light strip integrated with multiple LED light-emitting circuits, and the negative output end of the driving circuit is connected to the negative electrode of the LED light strip integrated with multiple LED light-emitting circuits. The positive output end and the negative output end of the driving circuit can periodically output n levels of voltage, and the n levels of voltage correspond one by one to the working voltages of the n LED light-emitting circuits.

5. The driving circuit of an LED light bar integrating multiple LED lighting circuits according to claim 4, characterized in that The driving circuit includes a multi-channel constant voltage power supply, an n-choose-one switch circuit and a switch control circuit. The multi-channel constant voltage power supply has n output terminals and a negative electrode. The s-th output terminal of the multi-channel constant voltage power supply is used to output the working voltage Vs of the s-th LED light-emitting circuit of the LED light strip integrating multiple LED light-emitting circuits, s=1, 2, ..., n; the n-choose-one switch circuit has n input terminals, an output terminal, n signal input terminals and a negative electrode. The s-th input terminal of the n-choose-one switch circuit corresponds to its s-th signal input terminal. The s-th signal input terminal of the n-choose-one switch circuit is used to access an electrical signal for controlling whether its s-th input terminal and its output terminal are conductive. The switch control circuit has n signal output terminals and a negative electrode. The s-th signal output terminal of the switch control circuit is used to output an electrical signal for controlling whether the s-th input terminal and its output terminal of the n-choose-one switch circuit are conductive. The sth output end of the multi-channel constant voltage power supply is connected to the sth input end of the n-to-one switching circuit, the sth signal input end of the n-to-one switching circuit is connected to the sth signal output end of the switch control circuit, and the negative electrode of the switch control circuit, the negative electrode of the n-to-one switching circuit and the negative electrode of the multi-channel constant voltage power supply are connected.

6. The driving circuit of the LED light bar integrating multiple LED lighting circuits according to claim 5, characterized in that The n-to-one switch circuit includes n switch units, each of which has an input end, an output end, a signal input end and a cathode. The signal input end of the switch unit is used to connect to a high level 1 or a low level 0. When a high level 1 is connected, its input end and output end are turned on, and when a low level 0 is connected, its input end and output end are turned off; the input end of the sth switch unit is the sth input end of the n-to-one switch circuit, the signal input end of the sth switch unit is the sth signal input end of the n-to-one switch circuit, the output ends of the n switch units are connected together, and their connection end is the output end of the n-to-one switch circuit, and the cathodes of the n switch units are connected together, and their connection end is the cathode of the n-to-one switch circuit.

7. The driving circuit of an LED light bar integrating multiple LED lighting circuits according to claim 6, characterized in that Each of the switch units includes a first resistor, a second resistor, a third resistor, a first diode, a first transistor and a second transistor. The first diode is a rectifier diode. One end of the first resistor is the signal input end of the switch unit. The other end of the first resistor is connected to the base of the first transistor. The emitter of the first transistor is the negative electrode of the switch unit. The collector of the first transistor is connected to one end of the third resistor. The other end of the third resistor and one end of the second resistor are connected to the base of the second transistor. The emitter of the second transistor is connected to the other end of the second resistor, and the connection end is the input end of the switch unit. The collector of the second transistor is connected to the positive electrode of the first diode. The negative electrode of the first diode is the output end of the switch unit.

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