CN113645731A

CN113645731A - LED combined lamp

Info

Publication number: CN113645731A
Application number: CN202110856356.5A
Authority: CN
Inventors: 杨开涵; 赵肖玲
Original assignee: Shaoxing Jiuxin Electronic Sci Tech Co ltd
Current assignee: Shaoxing Jiuxin Electronic Sci Tech Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2021-11-12

Abstract

The invention discloses an LED combined lamp, which comprises n identical LED lamp units and a lamp controller, wherein the lamp controller can communicate with an external control terminal, receive a control signal sent by the external control terminal and generate a corresponding lamp control signal based on the control signal accessed by the external control terminal, the lamp controller can also preset a lamp control program in the lamp controller to generate a corresponding lamp control signal so as to set the light-emitting state of one LED lamp unit, the signal output end of the lamp controller is used for outputting the lamp control signal to set the light-emitting state of one LED lamp unit, the light-emitting state of the LED lamp unit comprises brightness and color temperature/color, the lamp control signal comprises an address code and an operation code, each LED lamp unit is respectively provided with one code, and the codes of the n LED lamp units are either identical or different; the LED lamp control system has the advantages that a plurality of LED lamp units which can be spliced in the system can be controlled independently, and the diversified requirements of control modes can be met.

Description

LED combined lamp

Technical Field

The invention relates to an LED lamp, in particular to an LED combined lamp.

Background

The existing LED combined lamp generally comprises a plurality of identical spliced LED lamp units, each LED lamp unit is provided with an input interface and an output interface, the LED lamp units are connected together according to the method that the input interface of the next LED lamp unit is connected with the output interface of the previous LED lamp unit, and when the input interface of the first LED lamp unit is connected with voltage, the whole LED combined lamp can emit light simultaneously. The input interface of the LED lamp unit capable of being spliced comprises two electric connecting ends which are respectively a first input end and a second input end, the output interface of the LED lamp unit also comprises two electric connecting ends which are respectively a first output end and a second output end, the first input end of the LED lamp unit is connected with the first output end, the second input end of the LED lamp unit is connected with the second output end, and the first input end and the second input end of the LED lamp unit are used for being connected with external voltage to provide working voltage for internal circuits of the LED lamp unit. When the input interface of the last LED lamp unit is connected with the output interface of the previous LED lamp unit, the first output end of the previous LED lamp unit is connected with the first input end of the next LED lamp unit, the second output end of the previous LED lamp unit is connected with the second input end of the next LED lamp unit, and when the previous LED lamp unit is connected with the working voltage, the next LED lamp unit is connected with the working voltage with the same size.

The LED combined lamp does not need to be independently wired for each LED lamp unit, and the LED lamp units can be spliced as required, so that the LED combined lamp is convenient to assemble. However, each LED lamp unit in the LED combination lamp is connected to the same working voltage, and when the external voltage is changed to adjust the light, the working voltages of the LED lamp units are changed synchronously, and the control of the LED lamp units is performed synchronously, which cannot meet the requirement of individually controlling each LED lamp unit and diversifying the control mode.

Disclosure of Invention

The invention aims to solve the technical problem of providing an LED combined lamp which can independently control a plurality of spliced LED lamp units and can meet the requirement of diversified control modes.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a LED combination lamps and lanterns, includes n the same LED lamp unit that splices, n is more than or equal to 2 integer, every LED lamp unit have first input, second input, first output and second output respectively, the first output of kth LED lamp unit and the first input of the (k + 1) th LED lamp unit are connected, the second output of the kth LED lamp unit and the second input of the (k + 1) th LED lamp unit are connected, k is 1,2, …, n-1, the first input of every LED lamp unit and its first output are connected, the second input of every LED lamp unit and its second output are connected, LED combination lamps and lanterns still include lamps and lanterns controller, every LED lamp unit still have signal input end and signal output end, lamps and lanterns controller have first input end, the first input end of going forward, the first end of going forward, the second end of going forward the second end of every LED lamp unit is connected with its second output, LED combination lamps and lanterns controller still include lamps and lanterns controller, every LED lamp unit still have signal input end and signal output end, the first input end of going forward the first end of going forward, the first end of going forward, the first end of going forward, the second end of going forward, the first end of going forward, the first end of going forward, the first end of the second end of going forward, the first end of the second end of the first end of the second end of the first end, The first input end and the second input end of the lamp controller are used for accessing external voltage, the first output end and the output end of the lamp controller are used for outputting corresponding voltage, the first output end of the lamp controller is connected with the first input end of the 1 st LED lamp unit, the second output end of the lamp controller is connected with the second input end of the 1 st LED lamp unit, the signal control end of the lamp controller is connected with the signal input end of the 1 st LED lamp unit, the signal output end of the k < th > LED lamp unit is connected with the signal input end of the (k + 1) < th > LED lamp unit, the lamp controller can communicate with an external control terminal, receives a control signal sent by the external control terminal and generates a corresponding lamp control signal based on the control signal accessed by the lamp controller, the LED lamp control system comprises a lamp controller, a signal output end of the lamp controller, a code generator and a controller, wherein the lamp controller can also preset a lamp control program in the lamp controller to generate a corresponding lamp control signal so as to set the light emitting state of a certain LED lamp unit, the light emitting state of the LED lamp unit comprises brightness and color temperature/color, the lamp control signal comprises an address code and an operation code, each LED lamp unit is provided with a code, and the codes of n LED lamp units are the same or different; when external voltage is connected between a first input end and a second input end of the lamp controller, voltage is output between a first output end and a second output end of the lamp controller, the voltage connected between the first input end and the second input end of each LED lamp unit is equal to the voltage output between the first output end and the second output end of the lamp controller, at the moment, each LED lamp unit is in a default light-emitting state or a light-emitting state stored before the previous power failure, if the lamp controller receives a control signal sent by an external control terminal or works according to a preset lamp control program in the lamp controller, and requires to set the light-emitting state of one LED lamp unit, the lamp controller generates a corresponding lamp control signal to be output at a signal control end of the lamp controller, and after a signal input end of a jth LED lamp unit receives the lamp control signal, the jth LED lamp unit compares the address code in the received lamp control signal with the own code, if the address code is consistent with the own code, the signal output end of the jth LED lamp unit does not output the lamp control signal, and simultaneously sets the light emitting state of the jth LED lamp unit according to the operation code in the lamp control signal, if the address code is inconsistent with the own code, the jth LED lamp unit directly outputs the received lamp control signal at the signal output end without any modification under the condition that the n LED lamp units have different codes, and under the condition that the n LED lamp units have the same codes, the jth LED lamp unit firstly modifies the address code in the lamp control signal according to the address code modification rule prestored in the jth LED lamp unit and then outputs the modified lamp control signal at the signal output end of the jth LED lamp unit, wherein j is 1,2, …, and n.

The code of each LED lamp unit is set to be 1, when the light emitting state of the mth LED lamp unit needs to be set, m is an integer which is more than or equal to 1 and less than or equal to n, the address code in the lamp control signal output by the signal control end of the lamp controller is m, the 1 st LED lamp unit firstly receives the lamp control signal and judges whether the address code in the lamp control signal is 1, if not, the 1 st LED lamp unit subtracts 1 from the address code in the lamp control signal to obtain a modified lamp control signal which is output from the signal output end of the 1 st LED lamp unit, if the address code is 1, the 1 st LED lamp unit does not output the lamp control signal at the signal output end and sets the light emitting state according to the operation code in the lamp control signal, therefore, the address code of the lamp control signal received by the 1 st to the m-1 st LED lamp unit is decreased progressively, so that the address code in the lamp control signal received by the mth LED lamp unit is 1 st to the m-1 st LED lamp unit is 1 st, and the code of the mth LED lamp unit is matched, the mth LED lamp unit can match the address code in the lamp control signal with the code of the mth LED lamp unit, and the setting of the light-emitting state is carried out according to the lamp control signal received by the mth LED lamp unit, so that the mth LED lamp unit is independently controlled.

The LED lamp unit comprises a first LED light-emitting circuit, a second LED light-emitting circuit, a first integrated circuit, a second integrated circuit, a first resistor, a second resistor, a third resistor, a first diode, a first triode and a first capacitor, wherein the first diode is a voltage stabilizing diode, the first integrated circuit is realized by adopting a single chip microcomputer, the first integrated circuit is provided with a positive electrode, a negative electrode, a signal input end, a signal output end, a first output end and a second output end, the second integrated circuit is realized by adopting two universal PWM control linear constant current circuits, the two PWM control linear constant current circuits are respectively provided with an output end, a current adjusting end and a PWM end and are provided with a common negative electrode, in each PWM control linear constant current circuit, the current adjusting end and the negative electrode are connected by using resistors, each PWM control linear constant current circuit can adjust the maximum current of the output end by adjusting the resistance value of the resistor between the current adjusting end and the negative electrode, the average current of the output end of each PWM control linear constant current circuit corresponds to the duty ratio of 1 level of the PWM end, when the PWM end is 0 level, the current of the output end is 0, when the PWM end is 1 level, the current of the output end is the set maximum current, the output end, the current regulation end and the PWM end of one PWM control linear constant current circuit are respectively used as the first output end, the first current regulation end and the first PWM end of the second integrated circuit, the output end, the current regulation end and the PWM end of the other PWM control linear constant current circuit are respectively used as the second output end, the second current regulation end and the second PWM end of the second integrated circuit, the negative electrode shared by the PWM control linear constant current circuits is used as the negative electrode of the second integrated circuit, and the first LED light-emitting circuit and the second light-emitting circuit both have a positive electrode and a negative electrode, one end of the first resistor, a collector of the first triode, an anode of the first LED light-emitting circuit and an anode of the second LED light-emitting circuit are connected, and connection ends of the first resistor, the collector of the first triode, the anode of the first LED light-emitting circuit and the anode of the second LED light-emitting circuit are respectively used as a first input end and a first output end of the LED lamp unit, the other end of the first resistor, a cathode of the first diode and a base of the first triode are connected, an emitter of the first triode and one end of the first capacitor are connected with the anode of the first integrated circuit, a signal input end of the first integrated circuit is used as a signal input end of the LED lamp unit, a signal output end of the first integrated circuit is used as a signal output end of the LED lamp unit, a first output end of the first integrated circuit is connected with a first PWM end of the second integrated circuit, a second output end of the first integrated circuit is connected with a second PWM end of the second integrated circuit, the first output end of the second integrated circuit is connected with the negative electrode of the first LED light-emitting circuit, the second output end of the second integrated circuit is connected with the negative electrode of the second LED light-emitting circuit, the first current regulating end of the second integrated circuit is connected with one end of the second resistor, the second current regulating end of the second integrated circuit is connected with one end of the third resistor, the negative electrode of the second integrated circuit, the other end of the second resistor, the other end of the third resistor, the negative electrode of the first integrated circuit, the other end of the first capacitor and the positive electrode of the first diode are connected, and the connecting ends of the first current regulating end and the second current regulating end are respectively used as the second input end and the second output end of the LED lamp unit; when voltage is connected between the first input end and the second input end of the LED lamp unit, the emitter of the first triode outputs voltage to provide working voltage for the first integrated circuit, the electric signal output by the first output terminal of the first integrated circuit controls the current magnitude of the first output terminal of the second integrated circuit, thereby controlling the luminous intensity of the first LED luminous circuit, the electric signal output by the second output end of the first integrated circuit controls the current of the second output end of the second integrated circuit, thereby controlling the luminous intensity of the second LED luminous circuit, when the first output end and the second output end of the first integrated circuit both output 0 level signals, the first output end and the second output end of the second integrated circuit have no current output, and the first LED light-emitting circuit and the second LED light-emitting circuit do not emit light; when the first output end and the second output end of the first integrated circuit output 1 level signals, the first output end and the second output end of the second integrated circuit output the maximum current set by the first integrated circuit, the luminous intensity of the first LED luminous circuit and the second LED luminous circuit is strongest, when the first output end and the second output end of the first integrated circuit output PWM signals and the duty ratio of the PWM signals output by the first output end and the second output end is different, the ratio of the luminous intensity of the first LED luminous circuit to the luminous intensity of the second LED luminous circuit is different, when the luminous color temperatures of the first LED luminous circuit and the second LED luminous circuit are different, the ratio of the luminous intensity of the first LED luminous circuit to the luminous intensity of the second LED luminous circuit is changed, the color temperature of the mixed light generated by the LED lamp unit and the LED lamp unit is correspondingly changed, so that the first integrated circuit can change the light emitting state of the LED lamp unit, including the light emitting intensity and the light emitting color temperature, by setting the first output end and the second output end of the first integrated circuit to output different electric signals.

The lamp controller comprises a voltage conversion circuit, an auxiliary power supply and an intelligent control circuit, wherein the voltage conversion circuit is a direct current stabilized voltage supply circuit in the conventional technology and is provided with a first input end, a second input end, a positive output end and a negative output end, the voltage conversion circuit is used for converting direct current or alternating current voltages connected with the first input end and the second input end into required direct current voltages and outputting the required direct current voltages between the positive output end and the negative output end, the first input end of the voltage conversion circuit is used as the first input end of the lamp controller, the second input end of the voltage conversion circuit is used as the second input end of the lamp controller, the positive output end of the voltage conversion circuit is used as the first output end of the lamp controller, and the negative output end of the voltage conversion circuit is used as the second output end of the lamp controller, the auxiliary power supply is provided with an input end, an output end and a negative electrode, the auxiliary power supply is used for converting direct-current voltage accessed by the input end of the auxiliary power supply into working voltage required by the intelligent control circuit and outputting the working voltage at the output end of the auxiliary power supply, the input end of the auxiliary power supply is connected with the positive output end of the voltage conversion circuit, the negative electrode of the auxiliary power supply is connected with the negative output end of the voltage conversion circuit, the intelligent control circuit is provided with a positive electrode, a negative electrode and a signal output end, the intelligent control circuit can be communicated with an external control terminal, receives a control signal sent by the external control terminal and generates a corresponding lamp control signal based on the control signal accessed by the intelligent control circuit, a lamp control program can be preset in the intelligent control circuit to generate a corresponding lamp control signal and outputs the lamp control signal at the signal output end of the intelligent control circuit, and the positive electrode of the intelligent control circuit is connected with the output end of the auxiliary power supply, the negative pole of the intelligent control circuit is connected with the negative pole of the auxiliary power supply, and the signal output end of the intelligent control circuit is the output control end of the lamp controller.

Compared with the prior art, the invention has the advantages that through the arrangement of the lamp controller, each LED lamp unit is also provided with a signal input end and a signal output end, the lamp controller is provided with a first input end, a second input end, a first output end, a second output end and a signal control end, external voltage is connected between the first input end and the second input end of the lamp controller, corresponding voltage is output between the first output end and the output end of the lamp controller, the first output end of the lamp controller is connected with the first input end of the 1 st LED lamp unit, the second output end of the lamp controller is connected with the second input end of the 1 st LED lamp unit, the signal control end of the lamp controller is connected with the signal input end of the 1 st LED lamp unit, the signal output end of the kth LED lamp unit is connected with the signal input end of the kth +1 th LED lamp unit, the lamp controller can communicate with an external control terminal, receiving a control signal sent by an external control terminal, generating a corresponding lamp control signal based on the control signal accessed by the external control terminal, and setting the light emitting state of a certain LED lamp unit, wherein the lamp controller can also preset a lamp control program in the lamp controller to generate a corresponding lamp control signal to set the light emitting state of the certain LED lamp unit, the signal output end of the lamp controller is used for outputting the lamp control signal to set the light emitting state of the certain LED lamp unit, the light emitting state of the LED lamp unit comprises brightness and color temperature/color, the lamp control signal comprises an address code and an operation code, each LED lamp unit is respectively provided with a code, the codes of the n LED lamp units are the same or different, when an external voltage is accessed between the first input end and the second input end of the lamp controller, a voltage is output between the first output end and the second output end of the lamp controller, the voltage connected between the first input end and the second input end of each LED lamp unit is equal to the voltage output between the first output end and the second output end of the lamp controller, at the moment, each LED lamp unit is in a default light-emitting state or a light-emitting state stored before the previous power failure, if the lamp controller receives a control signal sent by an external control terminal or works according to a preset lamp control program in the lamp controller, the light-emitting state of one LED lamp unit is required to be set, the lamp controller generates a corresponding lamp control signal to be output at a signal control end of the lamp controller, after the signal input end of the jth LED lamp unit receives the lamp control signal, the jth LED lamp unit compares an address code in the received lamp control signal with a code of the jth LED lamp unit, if the address code is consistent with the code, the signal output end of the jth LED lamp unit does not output the lamp control signal, and simultaneously sets the light-emitting state of the jth LED lamp unit according to an operation code in the lamp control signal, if the two are not consistent, under the condition that the codes of the n LED lamp units are different, the jth LED lamp unit directly outputs the received lamp control signal at the signal output end without any modification, under the condition that the codes of the n LED lamp units are all the same, the jth LED lamp unit firstly modifies the address code in the lamp control signal according to the address code modification rule prestored in the jth LED lamp unit, and then outputs the modified lamp control signal at the signal output end, wherein j is 1,2, …, n, therefore, the invention can independently control a plurality of spliced LED lamp units in the jth LED lamp unit, and can meet the diversified requirements of control modes.

Drawings

FIG. 1 is a schematic structural diagram of an LED combined lamp of the present invention;

FIG. 2 is a circuit diagram of an LED lamp unit of the LED combination lamp of the present invention;

fig. 3 is a structural diagram of a lamp controller of the LED combined lamp of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Example (b): as shown in fig. 1, an LED combined lamp includes n identical spliced LED lamp units, where n is an integer greater than or equal to 2, each LED lamp unit has a first input end, a second input end, a first output end and a second output end, the first output end of the kth LED lamp unit is connected to the first input end of the (k + 1) th LED lamp unit, the second output end of the kth LED lamp unit is connected to the second input end of the (k + 1) th LED lamp unit, k is 1,2, …, n-1, the first input end of each LED lamp unit is connected to the first output end thereof, the second input end of each LED lamp unit is connected to the second output end thereof, the LED combined lamp further includes a lamp controller, each LED lamp unit further has a signal input end and a signal output end, the lamp controller has a first input end, a second input end, a first output end, a second output end, and a third output end, A second output end and a signal control end, wherein an external voltage is connected between a first input end and a second input end of the lamp controller, a corresponding voltage is output between the first output end and the output end of the lamp controller, the first output end of the lamp controller is connected with a first input end of the 1 st LED lamp unit, the second output end of the lamp controller is connected with a second input end of the 1 st LED lamp unit, the signal control end of the lamp controller is connected with a signal input end of the 1 st LED lamp unit, a signal output end of the kth LED lamp unit is connected with a signal input end of the (k + 1) th LED lamp unit, the lamp controller can communicate with an external control terminal, receive a control signal sent by the external control terminal, generate a corresponding lamp control signal based on the control signal connected to set a light emitting state of one of the LED lamp units, the lamp controller can also internally preset a lamp control program to generate a corresponding lamp control signal, the method comprises the steps that a light-emitting state of one LED lamp unit is set, a signal output end of a lamp controller is used for outputting a lamp control signal to set the light-emitting state of the certain LED lamp unit, wherein the light-emitting state of the LED lamp unit comprises brightness and color temperature/color, the lamp control signal comprises an address code and an operation code, each LED lamp unit is provided with one code, and the codes of n LED lamp units are the same or different; when external voltage is connected between a first input end and a second input end of the lamp controller, voltage is output between a first output end and a second output end of the lamp controller, the voltage connected between the first input end and the second input end of each LED lamp unit is equal to the voltage output between the first output end and the second output end of the lamp controller, at the moment, each LED lamp unit is in a default light-emitting state or a light-emitting state stored before the previous power failure, if the lamp controller receives a control signal sent by an external control terminal or works according to a preset lamp control program in the lamp controller, a certain LED lamp unit is required to be set in the light-emitting state, the lamp controller generates a corresponding lamp control signal to be output at a signal control end of the lamp controller, and after the signal input end of the jth LED lamp unit receives the lamp control signal, the jth LED lamp unit compares an address code in the received lamp control signal with a code of the jth LED lamp unit, if the two are consistent, the signal output end does not output the lamp control signal, and the light emitting state of the signal is set according to the operation code in the lamp control signal, if the two are inconsistent, under the condition that the codes of the n LED lamp units are different, the jth LED lamp unit directly outputs the received lamp control signal at the signal output end without any modification, under the condition that the codes of the n LED lamp units are all the same, the jth LED lamp unit firstly modifies the address code in the lamp control signal according to the address code modification rule prestored in the jth LED lamp unit, and then outputs the modified lamp control signal at the signal output end, wherein j is 1,2, …, n.

In this embodiment, the code of each LED lamp unit is set to 1, when the lighting state of the mth LED lamp unit needs to be set, m is an integer greater than or equal to 1 and less than or equal to n, the address code in the lamp control signal output by the signal control terminal of the lamp controller is m, the 1 st LED lamp unit receives the lamp control signal first and determines whether the address code in the lamp control signal is 1, if not, the 1 st LED lamp unit subtracts 1 from the address code in the lamp control signal to obtain a modified lamp control signal, and outputs the modified lamp control signal from the signal output terminal thereof, if the address code is 1, the 1 st LED lamp unit does not output the lamp control signal at the signal output terminal thereof and sets the lighting state thereof according to the operation code in the lamp control signal, so that the address code of the lamp control signal received by the 1 st to m-1 st LED lamp units is decremented, the address code in the lamp control signal received by the mth LED lamp unit is made to be 1 and matched with the code of the mth LED lamp unit, the mth LED lamp unit can match the address code in the lamp control signal with the code of the mth LED lamp unit, and the setting of the light emitting state is carried out according to the lamp control signal received by the mth LED lamp unit, so that the mth LED lamp unit is controlled independently.

As shown in fig. 2, in the present embodiment, the LED lamp unit includes a first LED lighting circuit LED1, a second LED lighting circuit LED2, a first integrated circuit U1, a second integrated circuit U2, a first resistor R1, a second resistor R2, a third resistor R3, a first diode D1, a first triode Q1, and a first capacitor C1, the first diode D1 is a zener diode, the first integrated circuit U1 is implemented by a single chip, the first integrated circuit U1 has a positive electrode, a negative electrode, a signal input terminal, a signal output terminal, a first output terminal, and a second output terminal, the second integrated circuit U2 is implemented by a universal PWM control linear constant current circuit, the two PWM control linear constant current circuits respectively have an output terminal, a current adjusting terminal, and a PWM terminal, and have a common negative electrode, in each PWM control linear constant current circuit, the current adjusting terminal and the negative electrode are connected by a resistor, and each PWM control linear constant current circuit can adjust the magnitude between the current adjusting terminal and the negative electrode by adjusting resistor The maximum current of the output end of each PWM control linear constant current circuit corresponds to the duty ratio of 1 level of the PWM end, when the PWM end is 0 level, the current of the output end is 0, when the PWM end is 1 level, the current of the output end is the set maximum current, the output end, the current regulation end and the PWM end of one PWM control linear constant current circuit are respectively used as the first output end, the first current regulation end and the first PWM end of the second integrated circuit U2, the output end, the current regulation end and the PWM end of the other PWM control linear constant current circuit are respectively used as the second output end, the second current regulation end and the second PWM end of the second integrated circuit U2, the negative electrode shared by the two PWM control linear constant current circuits is used as the negative electrode of the second integrated circuit U2, and the first LED light-emitting circuit LED1 and the second light-emitting circuit both have a positive electrode and a negative electrode, one end of a first resistor R1, a collector of a first triode Q1, an anode of a first LED light-emitting circuit LED1 and an anode of a second LED light-emitting circuit LED2 are connected, and connection ends of the first resistor R1 and the cathode of a first diode D1 are respectively used as a first input end and a first output end of the LED lamp unit, the other end of the first resistor R1, a cathode of the first diode D1 and a base of the first triode are connected, an emitter of the first triode and one end of a first capacitor C1 are connected with an anode of a first integrated circuit U1, a signal input end of the first integrated circuit U1 is used as a signal input end of the LED lamp unit, a signal output end of a first integrated circuit U1 is used as a signal output end of the LED lamp unit, a first output end of the first integrated circuit U1 is connected with a first PWM end of a second integrated circuit U2, a second output end of the first integrated circuit U1 is connected with a second PWM end of the second integrated circuit U2, a first output end of the second integrated circuit U2 and a cathode of the first LED light-emitting circuit U1 are connected, a second output end of the second integrated circuit U2 is connected with a cathode of the second LED lighting circuit LED2, a first current adjusting end of the second integrated circuit U2 is connected with one end of the second resistor R2, a second current adjusting end of the second integrated circuit U2 is connected with one end of the third resistor R3, a cathode of the second integrated circuit U2, the other end of the second resistor R2, the other end of the third resistor R3, a cathode of the first integrated circuit U1, the other end of the first capacitor C1 is connected with an anode of the first diode D1, and connection ends thereof are respectively used as a second input end and a second output end of the LED lamp unit; when voltage is connected between a first input end and a second input end of the LED lamp unit, the emitter of the first triode Q1 outputs voltage to provide working voltage for the first integrated circuit U1, an electric signal output by a first output end of the first integrated circuit U1 controls the current of a first output end of the second integrated circuit U2 so as to control the luminous intensity of the first LED luminous circuit LED1, an electric signal output by a second output end of the first integrated circuit U1 controls the current of a second output end of the second integrated circuit U2 so as to control the luminous intensity of the second LED luminous circuit LED2, when the first output end and the second output end of the first integrated circuit U1 both output 0-level signals, no current is output from the first output end and the second output end of the second integrated circuit U2, and neither the first LED luminous circuit LED1 nor the second LED luminous circuit LED2 can emit light; when the first output end and the second output end of the first integrated circuit U1 both output 1 level signals, the first output end and the second output end of the second integrated circuit U2 both output the maximum current set by the first integrated circuit U2, the luminous intensity of the first LED lighting circuit LED1 and the second LED lighting circuit LED2 is the strongest, when the first output end and the second output end of the first integrated circuit U1 both output PWM signals, and the ratio of the duty ratio of the PWM signal output by the first output end and the duty ratio of the PWM signal output by the second output end is different, the ratio of the luminous intensity of the first LED lighting circuit LED1 and the luminous intensity of the second LED lighting circuit LED2 is also different, when the luminous color temperature of the first LED lighting circuit LED1 and the luminous color temperature of the second LED lighting circuit LED2 are different, the ratio of the luminous intensity of the first LED lighting circuit LED1 and the luminous intensity of the second LED lighting circuit LED2 is changed, the color temperature of the mixed light produced by the two is correspondingly changed, thus, the first integrated circuit U1 can change the lighting state of the LED lamp unit, including the lighting intensity and the lighting color temperature, by setting the first output terminal and the second output terminal thereof to output different electrical signals.

As shown in fig. 3, in this embodiment, the lamp controller includes a voltage converting circuit, an auxiliary power supply and an intelligent control circuit, the voltage converting circuit is a dc regulated power supply circuit of the conventional technology and has a first input terminal, a second input terminal, a positive output terminal and a negative output terminal, the voltage converting circuit is used for converting the dc or ac voltages connected to the first input terminal and the second input terminal thereof into the required dc voltage to be output between the positive output terminal and the negative output terminal thereof, the first input terminal of the voltage converting circuit is used as the first input terminal of the lamp controller, the second input terminal of the voltage converting circuit is used as the second input terminal of the lamp controller, the positive output terminal of the voltage converting circuit is used as the first output terminal of the lamp controller, the negative output terminal of the voltage converting circuit is used as the second output terminal of the lamp controller, the auxiliary power supply has an input terminal, an output terminal and a negative terminal, the auxiliary power supply is used for converting direct current voltage accessed by the input end of the auxiliary power supply into working voltage required by the intelligent control circuit and outputting the working voltage at the output end of the intelligent control circuit, the input end of the auxiliary power supply is connected with the positive output end of the voltage conversion circuit, the negative electrode of the auxiliary power supply is connected with the negative output end of the voltage conversion circuit, the intelligent control circuit is provided with a positive electrode, a negative electrode and a signal output end, the intelligent control circuit can communicate with an external control terminal and receive a control signal sent by the external control terminal, and generates corresponding lamp control signals based on the control signals accessed by the controller, and can also preset a lamp control program in the controller to generate corresponding lamp control signals, the signal output end of the intelligent control circuit is connected with the positive electrode of the intelligent control circuit and the output end of the auxiliary power supply, the negative electrode of the intelligent control circuit is connected with the negative electrode of the auxiliary power supply, and the signal output end of the intelligent control circuit is the output control end of the lamp controller.

Claims

1. The LED combined lamp is characterized by further comprising a lamp controller, each LED lamp unit further comprises a signal input end and a signal output end, the lamp controller is provided with a first input end, a second input end, a first output end and a second output end, the first output end of the kth LED lamp unit is connected with the first input end of the (k + 1) th LED lamp unit, the second output end of the kth LED lamp unit is connected with the second input end of the (k + 1) th LED lamp unit, k is 1,2, … and n-1, the first input end of each LED lamp unit is connected with the first output end of the LED lamp unit, and the second input end of each LED lamp unit is connected with the second output end of the LED lamp unit The first input end and the second input end of the lamp controller are used for accessing external voltage, the first output end and the output end of the lamp controller are used for outputting corresponding voltage, the first output end of the lamp controller is connected with the first input end of the 1 st LED lamp unit, the second output end of the lamp controller is connected with the second input end of the 1 st LED lamp unit, the signal control end of the lamp controller is connected with the signal input end of the 1 st LED lamp unit, the signal output end of the k < th > LED lamp unit is connected with the signal input end of the (k + 1) < th > LED lamp unit, the lamp controller can communicate with an external control terminal, receives a control signal sent by the external control terminal and generates a corresponding lamp control signal based on the control signal accessed by the lamp controller, the LED lamp control system comprises a lamp controller, a signal output end of the lamp controller, a code generator and a controller, wherein the lamp controller can also preset a lamp control program in the lamp controller to generate a corresponding lamp control signal so as to set the light emitting state of a certain LED lamp unit, the light emitting state of the LED lamp unit comprises brightness and color temperature/color, the lamp control signal comprises an address code and an operation code, each LED lamp unit is provided with a code, and the codes of n LED lamp units are the same or different;

when external voltage is connected between a first input end and a second input end of the lamp controller, voltage is output between a first output end and a second output end of the lamp controller, the voltage connected between the first input end and the second input end of each LED lamp unit is equal to the voltage output between the first output end and the second output end of the lamp controller, at the moment, each LED lamp unit is in a default light-emitting state or a light-emitting state stored before the previous power failure, if the lamp controller receives a control signal sent by an external control terminal or works according to a preset lamp control program in the lamp controller, and requires to set the light-emitting state of one LED lamp unit, the lamp controller generates a corresponding lamp control signal to be output at a signal control end of the lamp controller, and after a signal input end of a jth LED lamp unit receives the lamp control signal, the jth LED lamp unit compares the address code in the received lamp control signal with the own code, if the address code is consistent with the own code, the signal output end of the jth LED lamp unit does not output the lamp control signal, and simultaneously sets the light emitting state of the jth LED lamp unit according to the operation code in the lamp control signal, if the address code is inconsistent with the own code, the jth LED lamp unit directly outputs the received lamp control signal at the signal output end without any modification under the condition that the n LED lamp units have different codes, and under the condition that the n LED lamp units have the same codes, the jth LED lamp unit firstly modifies the address code in the lamp control signal according to the address code modification rule prestored in the jth LED lamp unit and then outputs the modified lamp control signal at the signal output end of the jth LED lamp unit, wherein j is 1,2, …, and n.

2. The LED combination lamp of claim 1, wherein the code of each LED lamp unit is set to 1, when the lighting state of the mth LED lamp unit needs to be set, m is an integer greater than or equal to 1 and less than or equal to n, the address code of the lamp control signal outputted by the signal control terminal of the lamp controller is m, the 1 st LED lamp unit receives the lamp control signal first and judges whether the address code of the lamp control signal is 1, if not, the 1 st LED lamp unit subtracts 1 from the address code of the lamp control signal to obtain a modified lamp control signal, and outputs the modified lamp control signal from the signal output terminal thereof, if the address code is 1, the 1 st LED lamp unit does not output the lamp control signal at the signal output terminal thereof and sets the lighting state thereof according to the operation code of the lamp control signal, thereby decrementing the address code of the lamp control signal received by the 1 st to m-1 st LED lamp units, the address code in the lamp control signal received by the mth LED lamp unit is made to be 1 and matched with the code of the mth LED lamp unit, the mth LED lamp unit can match the address code in the lamp control signal with the code of the mth LED lamp unit, and the setting of the light emitting state is carried out according to the lamp control signal received by the mth LED lamp unit, so that the mth LED lamp unit is controlled independently.

3. The LED combined lamp according to claim 1, wherein the LED lamp unit comprises a first LED light-emitting circuit, a second LED light-emitting circuit, a first integrated circuit, a second integrated circuit, a first resistor, a second resistor, a third resistor, a first diode, a first triode and a first capacitor, the first diode is a voltage regulator diode, the first integrated circuit is realized by a single chip microcomputer, the first integrated circuit has a positive electrode, a negative electrode, a signal input terminal, a signal output terminal, a first output terminal and a second output terminal, the second integrated circuit is realized by a universal two-way PWM control linear constant current circuit, the two-way PWM control linear constant current circuit has an output terminal, a current regulating terminal and a PWM terminal, and has a common negative electrode, in each PWM control linear constant current circuit, the current regulating terminal and the negative electrode are connected by a resistor, each PWM control linear constant current circuit can adjust the maximum current of the output end thereof by adjusting the resistance value of the resistor between the current adjusting end and the negative electrode thereof, the average current of the output end of each PWM control linear constant current circuit corresponds to the duty ratio of 1 level of the PWM end thereof, when the PWM end thereof is 0 level, the current of the output end thereof is 0, when the PWM end thereof is 1 level, the current of the output end thereof is the set maximum current, one PWM control linear constant current circuit has the output end, the current adjusting end and the PWM end respectively used as the first output end, the first current adjusting end and the first PWM end of the second integrated circuit, the other PWM control linear constant current circuit has the output end, the current adjusting end and the PWM end respectively used as the second output end, the second current adjusting end and the second PWM end of the second integrated circuit, the negative electrode shared by the two PWM control linear constant current circuits is used as the negative electrode of the second integrated circuit, the first LED light-emitting circuit and the second LED light-emitting circuit are respectively provided with a positive pole and a negative pole, one end of the first resistor, the collector of the first triode, the positive pole of the first LED light-emitting circuit and the positive pole of the second LED light-emitting circuit are connected, the connecting ends of the first resistor and the collector of the first triode are respectively used as the first input end and the first output end of the LED lamp unit, the other end of the first resistor and the negative pole of the first diode are connected with the base of the first triode, the emitter of the first triode and one end of the first capacitor are connected with the positive pole of the first integrated circuit, the signal input end of the first integrated circuit is used as the signal input end of the LED lamp unit, the signal output end of the first integrated circuit is used as the signal output end of the LED lamp unit, and the first output end of the first integrated circuit is connected with the first PWM end of the second integrated circuit, the second output terminal of the first integrated circuit is connected to the second PWM terminal of the second integrated circuit, the first output end of the second integrated circuit is connected with the cathode of the first LED light-emitting circuit, the second output end of the second integrated circuit is connected with the cathode of the second LED light-emitting circuit, the first current regulating terminal of the second integrated circuit is connected with one end of the second resistor, the second current regulating terminal of the second integrated circuit is connected with one end of the third resistor, the cathode of the second integrated circuit, the other end of the second resistor, the other end of the third resistor, the cathode of the first integrated circuit, the other end of the first capacitor and the anode of the first diode are connected, and the connection ends of the first diode and the second diode are respectively used as a second input end and a second output end of the LED lamp unit; when voltage is connected between the first input end and the second input end of the LED lamp unit, the emitter of the first triode outputs voltage to provide working voltage for the first integrated circuit, the electric signal output by the first output terminal of the first integrated circuit controls the current magnitude of the first output terminal of the second integrated circuit, thereby controlling the luminous intensity of the first LED luminous circuit, the electric signal output by the second output end of the first integrated circuit controls the current of the second output end of the second integrated circuit, thereby controlling the luminous intensity of the second LED luminous circuit, when the first output end and the second output end of the first integrated circuit both output 0 level signals, the first output end and the second output end of the second integrated circuit have no current output, and the first LED light-emitting circuit and the second LED light-emitting circuit do not emit light; when the first output end and the second output end of the first integrated circuit output 1 level signals, the first output end and the second output end of the second integrated circuit output the maximum current set by the first integrated circuit, the luminous intensity of the first LED luminous circuit and the second LED luminous circuit is strongest, when the first output end and the second output end of the first integrated circuit output PWM signals and the duty ratio of the PWM signals output by the first output end and the second output end is different, the ratio of the luminous intensity of the first LED luminous circuit to the luminous intensity of the second LED luminous circuit is different, when the luminous color temperatures of the first LED luminous circuit and the second LED luminous circuit are different, the ratio of the luminous intensity of the first LED luminous circuit to the luminous intensity of the second LED luminous circuit is changed, the color temperature of the mixed light generated by the LED lamp unit and the LED lamp unit is correspondingly changed, so that the first integrated circuit can change the light emitting state of the LED lamp unit, including the light emitting intensity and the light emitting color temperature, by setting the first output end and the second output end of the first integrated circuit to output different electric signals.

4. The LED combined lamp of claim 1, wherein the lamp controller comprises a voltage converting circuit, an auxiliary power supply and an intelligent control circuit, the voltage converting circuit is a conventional DC stabilized power supply circuit having a first input terminal, a second input terminal, a positive output terminal and a negative output terminal, the voltage converting circuit is configured to convert the DC or AC voltages inputted from the first input terminal and the second input terminal into the required DC voltage and output the DC voltage between the positive output terminal and the negative output terminal, the first input terminal of the voltage converting circuit is used as the first input terminal of the lamp controller, the second input terminal of the voltage converting circuit is used as the second input terminal of the lamp controller, and the positive output terminal of the voltage converting circuit is used as the first output terminal of the lamp controller, the negative output end of the voltage conversion circuit is used as the second output end of the lamp controller, the auxiliary power supply is provided with an input end, an output end and a negative electrode, the auxiliary power supply is used for converting direct-current voltage accessed by the input end of the auxiliary power supply into working voltage required by the intelligent control circuit and outputting the working voltage at the output end of the auxiliary power supply, the input end of the auxiliary power supply is connected with the positive output end of the voltage conversion circuit, the negative electrode of the auxiliary power supply is connected with the negative output end of the voltage conversion circuit, the intelligent control circuit is provided with a positive electrode, a negative electrode and a signal output end, the intelligent control circuit can communicate with an external control terminal, receive control signals sent by the external control terminal, generate corresponding lamp control signals based on the control signals accessed by the external control terminal, and also can internally preset lamp control programs to generate corresponding lamp control signals, the signal output end of the intelligent control circuit is connected with the output end of the auxiliary power supply, the negative electrode of the intelligent control circuit is connected with the negative electrode of the auxiliary power supply, and the signal output end of the intelligent control circuit is the output control end of the lamp controller.