CN220108257U - Color matching circuit and lighting equipment - Google Patents

Abstract

The utility model provides a color matching circuit and a lighting device, comprising: a key module; the DMX module is connected with at least one light-emitting component; the color mixing control module comprises a plurality of DMX interfaces and pulse pins, wherein each DMX interface is correspondingly connected with the DMX module, and only one DMX module corresponding to one DMX interface is used as a host; the color matching control module is connected with the key module, and is triggered to output a first signal through a DMX interface trigger pulse pin under the condition that the key module is pressed for a short time, or is triggered to switch a DMX module corresponding to another DMX interface to serve as a host under the condition that the key module is pressed for a long time; the color mixing module is connected with the trigger pin and comprises a driving unit and an H-bridge unit which are connected, and under the condition that the driving unit receives a first signal, the H-bridge unit triggers the DMX module serving as a host to switch the color temperatures of all the light emitting components. In the embodiment of the utility model, the color temperature change of a plurality of light emitting components can be controlled simultaneously, so that the labor cost is reduced.

Description

Color matching circuit and lighting equipment

Technical Field

The present disclosure relates to electronic circuits, and particularly to a color matching circuit and a lighting device.

Background

At present, with the continuous development of the industry, the technology breaks through dramatically, the application is promoted greatly, the light efficiency of the LED is continuously improved, and the price is continuously low. The LED display device has the characteristics of energy conservation, environmental protection, long service life, low power consumption, simple maintenance and the like, and can be widely applied to various fields of indication, display, backlight source, general illumination and the like.

The lamp is also widely applied to outdoor illumination, indication and the like. When the lamp is applied to an outdoor scene, a large number of lamps are required to realize illumination of the whole scene, and the related technology controls the outdoor illumination lamp to be manually opened and closed, so that the operation is complex, laborious and easy to forget every day, the time is not easy to control, and difficulty is caused in timely illumination and next-time opening of the same illumination in various seasons. In addition, in a special holiday, in order to enhance the decorative effect of the light string, LED lamps with different colors are generally connected in series on the light string, and in the related art, it is difficult to control the color temperature change of a plurality of light strings at the same time, and the lamps need to be turned on and off manually one by one, so that the labor cost is increased.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art, and provides a color mixing circuit and a lighting device, which can simultaneously control the color temperature change of a plurality of light emitting components and reduce the labor cost.

In a first aspect, the present utility model provides a toning circuit comprising: the key module is used for performing short-press and long-press operations;

the DMX module is connected with at least one light-emitting component and is used for switching the color temperature of the light-emitting component;

the color matching control module comprises a plurality of DMX interfaces and pulse pins, wherein each DMX interface is correspondingly connected with the corresponding DMX module, and only one DMX module corresponding to the DMX interface is used as a host; the color matching control module is connected with the key module, and triggers the pulse pin to output a first signal through the DMX interface when the key module is pressed for a short time, or triggers the color matching control module to switch the DMX module corresponding to the other DMX interface to serve as a host when the key module is pressed for a long time;

the color matching module is connected with the pulse pin and comprises a driving unit and an H-bridge unit which are connected, and under the condition that the driving unit receives the first signal, the H-bridge unit triggers the DMX module serving as a host to switch the color temperatures of all the light emitting components.

The color matching circuit has at least the following beneficial effects: each DMX interface is correspondingly connected with a DMX module, only one DMX module corresponding to one DMX interface is used as a host, the color matching control module is connected with the key module to trigger a pulse pin to output a first signal through the DMX interface under the condition that the key module is pressed for a short time, so that the color temperature of a light emitting component connected with the DMX module is switched, or the color matching control module is triggered to switch to the DMX module corresponding to the other DMX interface to be used as the host under the condition that the key module is pressed for a long time, the host of the DMX module is switched to the host, the color temperature change of the light emitting component connected with the DMX module is conveniently controlled simultaneously, the color matching module is connected with the pulse pin, and a driving unit in the color matching module triggers the DMX module serving as the host to switch the color temperature of all the light emitting components connected with the DMX module through an H bridge unit under the condition that the first signal is received, the color temperature change of the light emitting component can be synchronized, the color temperature change of the light emitting component under the condition that the outdoor large-scale scene is realized, and the manpower cost is reduced.

According to some embodiments of the utility model, the pulse pins include a first pulse pin and a second pulse pin, and the first pulse pin and the second pulse pin are respectively connected with the driving unit to output the first signal.

According to some embodiments of the utility model, the color mixing control module comprises a master pin and a slave pin, wherein the first light emitting diode is connected with the master pin to display a first color temperature corresponding to the master, and the second light emitting diode is connected with the slave pin to display a second color temperature corresponding to the slave.

According to some embodiments of the utility model, the driving unit includes a first chip, a second chip, and a third chip, the first chip is connected to the first pulse pin and the second pulse pin to receive the first signal, the second chip and the third chip are respectively connected to the first chip, and the second chip and the third chip are connected to the H-bridge unit to output the first signal.

According to some embodiments of the utility model, the H-bridge unit includes a left bridge arm unit and a right bridge arm unit, the left bridge arm unit includes a first NMOS tube and a second NMOS tube, the right bridge arm unit includes a third NMOS tube and a fourth NMOS tube, gates of the first NMOS tube and the second NMOS tube are respectively connected with the second chip to switch a color temperature of the light emitting component according to the first signal, a drain of the first NMOS tube is connected with a source of the second NMOS tube, and drains of the third NMOS tube and the fourth NMOS tube are respectively connected with the third chip to adjust the color temperature of the light emitting component according to the first signal, and a drain of the third NMOS tube is connected with a source of the fourth NMOS tube.

According to some embodiments of the utility model, the driving unit further includes a first diode, a second diode, a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor, wherein an anode of the first diode is connected to the first capacitor, a cathode of the first diode is connected to the second capacitor, the first diode is connected in parallel to the second chip, an anode of the second diode is connected to the third capacitor, a cathode of the second diode is connected to the fourth capacitor, and the second diode is connected in parallel to the third chip.

According to some embodiments of the utility model, the right arm unit further includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a third diode, a fourth diode, a fifth diode, and a sixth diode, the second resistor is connected in parallel with the gate and the drain of the first NMOS, the first resistor is connected in parallel with the gate and the drain of the first NMOS, the third diode is connected in parallel with the first resistor, the fourth resistor is connected in parallel with the gate and the drain of the second NMOS, the third resistor is connected in parallel with the gate of the second NMOS, the fourth diode is connected in parallel with the third resistor, the fifth resistor is connected in parallel with the gate and the drain of the third NMOS, the sixth resistor is connected in parallel with the gate of the third NMOS, the fifth diode is connected in parallel with the sixth resistor, the seventh resistor is connected in parallel with the gate and the drain of the fourth NMOS, and the eighth resistor is connected in parallel with the gate and the eighth diode.

According to some embodiments of the utility model, the DMX module includes a first triac diode, a second triac diode, a receiver, a driver, a ninth resistor, a tenth resistor, an eleventh resistor, and a twelfth resistor, the ninth resistor being connected to the receiver and the eleventh resistor, the tenth resistor being connected to the driver and the twelfth resistor, the first triac diode having one end connected to a connection of the ninth resistor and the eleventh resistor and the other end connected to a reference ground, the second triac diode having one end connected to a connection of the tenth resistor and the twelfth resistor and the other end connected to a reference ground.

According to some embodiments of the utility model, the device further comprises a power supply module connected with the color mixing control module and the DMX module, wherein the power supply module is used for providing a power supply voltage.

In a second aspect, an embodiment of the present utility model provides a lighting device, including a color matching circuit as described in the first aspect.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and do not limit the utility model.

FIG. 1 is a schematic diagram of a color matching circuit according to an embodiment of the present utility model;

FIG. 2 is a circuit diagram of an H-bridge unit according to an embodiment of the present utility model;

FIG. 3 is a circuit diagram of a driving unit according to an embodiment of the present utility model;

FIG. 4 is a circuit diagram of a DMX module according to an embodiment of the present utility model;

fig. 5 is a circuit diagram of a power supply module according to an embodiment of the utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Embodiments of the present utility model will be further described below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic diagram of a color matching circuit according to an embodiment of the present utility model.

In one embodiment of the present utility model, a toning circuit includes: a key module 100 for performing short-press and long-press operations; the DMX module 200 is connected with at least one light emitting component, and the DMX module 200 is used for switching the color temperature of the light emitting component; the color matching control module 300 comprises a plurality of DMX interfaces and pulse pins, wherein each DMX interface is correspondingly connected with the DMX module 200, and only one DMX module 200 corresponding to one DMX interface is used as a host; the color matching control module is connected with the key module 100, and outputs a first signal through a DMX interface trigger pulse pin under the condition that the key module 100 is pressed for a short time, or triggers the color matching control module to switch a DMX module 200 corresponding to another DMX interface to serve as a host under the condition that the key module 100 is pressed for a long time; and the color matching module is connected with the pulse pin and comprises a driving unit 410 and an H-bridge unit 420 which are connected, and the H-bridge unit 420 triggers the DMX module 200 serving as a host to switch the color temperatures of all the light emitting components under the condition that the driving unit 410 receives the first signal.

It can be understood that each DMX interface is correspondingly connected to a DMX module 200, and takes a DMX module 200 corresponding to only one DMX interface as a host, the color matching control module is connected to the key module 100 to trigger a pulse pin to output a first signal through the DMX interface when the key module 100 is pressed for a short time, so as to realize the switching of the color temperature of the light emitting component connected to the DMX module 200, or trigger the color matching control module to switch to the DMX module 200 corresponding to another DMX interface as the host when the key module 100 is pressed for a long time, so as to realize the switching of the host of the DMX module 200 in a host mode, facilitate the simultaneous control of the color temperature change of the light emitting component connected to the DMX module 200, and the color matching module is connected to the pulse pin.

It should be noted that, the light emitting component in this embodiment may be an LED tube, an LED string, etc., which is not limited in this embodiment.

It should be noted that, the color mixing control module further includes a main control chip, the model of the main control chip is HK32F030MF4P6, the model of the DMX module 200 is MAX3085 (HM 485), and the color mixing control module may be further matched with the H-bridge unit 420 to switch the light emitting mode of the light emitting component, for example, switch the light emitting component to a breathing mode, a gradient mode, or switch the light emitting gear of the light emitting component.

In an embodiment of the utility model, the pulse pins include a first pulse pin and a second pulse pin, and the first pulse pin and the second pulse pin are respectively connected with the driving unit 410 to output a first signal, so as to realize the adjustment of the color temperature of the light emitting component.

In an embodiment of the present utility model, the color mixing control module further includes a display module 500, the display module 500 includes a first light emitting diode LED1 and a second light emitting diode LED2, the color mixing control module includes a master pin and a slave pin, the first light emitting diode LED1 is connected with the master pin to display a first color temperature corresponding to the master, the second light emitting diode LED2 is connected with the slave pin to display a second color temperature corresponding to the slave, so as to realize that the master and the slave indicate different colors, and facilitate distinguishing states of the master and the slave.

It is understood that the indication colors of the first color temperature and the second color temperature are different, the first color temperature may be red, green, yellow, the second color temperature may be blue, purple, etc., for example, the first light emitting diode LED1 in the display module 500 flashes a green indicator light in the case of the DMX module 200 as a master, and the second light emitting diode LED2 in the display module 500 flashes a red indicator light in the case of the DMX module 200 as a slave.

In an embodiment of the present utility model, the driving unit 410 includes a first chip, a second chip and a third chip, where the first chip is connected to the first pulse pin and the second pulse pin to receive the first signal, the second chip and the third chip are respectively connected to the first chip, and the second chip and the third chip are connected to the H-bridge unit 420 to output the first signal, so as to realize driving of the H-bridge unit 420, and perform short-circuit protection on the color-changing circuit, so as to avoid the situation of short circuit caused by overload.

The second chip has a chip type of EG2104S, and the third chip has a chip type of EG2104S.

Referring to fig. 2, fig. 2 is a circuit diagram of an H-bridge unit 420 according to an embodiment of the utility model;

in an embodiment of the present utility model, the H-bridge unit 420 includes a left bridge arm unit and a right bridge arm unit, the left bridge arm unit includes a first NMOS transistor Q1 and a second NMOS transistor Q2, the right bridge arm unit includes a third NMOS transistor Q3 and a fourth NMOS transistor Q4, gates of the first NMOS transistor Q1 and the second NMOS transistor Q2 are respectively connected with a second chip to switch a color temperature of the light emitting component according to a first signal, a drain of the first NMOS transistor Q1 is connected with a source of the second NMOS transistor Q2, drains of the third NMOS transistor Q3 and the fourth NMOS transistor Q4 are respectively connected with a third chip to adjust a color temperature of the light emitting component according to the first signal, and a drain of the third NMOS transistor Q3 is connected with a source of the fourth NMOS transistor Q4, so as to implement real-time switching of the color temperature of the light emitting component and improve efficiency of color temperature switching.

Referring to fig. 3, fig. 3 is a circuit diagram of a driving unit 410 according to an embodiment of the utility model;

in an embodiment of the present utility model, the driving unit 410 further includes a first diode D1, a second diode D2, a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4, wherein the anode of the first diode D1 is connected to the first capacitor C1, the cathode of the first diode D1 is connected to the second capacitor C2, the first diode D1 is connected in parallel to the second chip, the anode of the second diode D2 is connected to the third capacitor C3, the cathode of the second diode D2 is connected to the fourth capacitor C4, and the second diode D2 is connected in parallel to the third chip to realize the short-circuit protection of the color-adjusting circuit.

In an embodiment of the present utility model, the right bridge arm unit further includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a third diode D3, a fourth diode D4, a fifth diode D5 and a sixth diode D6, the second resistor R2 is connected in parallel with the gate and the drain of the first NMOS transistor Q1, the first resistor R1 is connected with the gate of the first NMOS transistor Q1, the third diode D3 is connected in parallel with the first resistor R1, the fourth resistor R4 is connected in parallel with the gate and the drain of the second NMOS transistor Q2, the third resistor R3 is connected in parallel with the gate and the drain of the second NMOS transistor Q2, the fourth resistor D4 is connected in parallel with the third resistor R3, the fifth resistor R5 is connected in parallel with the gate and the drain of the third NMOS transistor Q3, the sixth resistor R6 is connected in parallel with the gate and the drain of the seventh resistor R6 is connected in parallel with the gate and the eighth resistor R8 of the fourth NMOS transistor Q4.

Referring to fig. 4, fig. 4 is a circuit diagram of a DMX module 200 according to an embodiment of the present utility model;

in an embodiment of the present utility model, the DMX module 200 includes a first triac diode T1, a second triac diode T2, a receiver R, a driver D, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, and a twelfth resistor R12, the ninth resistor R9 is connected to the receiver R and the eleventh resistor R11, the tenth resistor R10 is connected to the driver D and the twelfth resistor R12, one end of the first triac diode T1 is connected to a connection between the ninth resistor R9 and the eleventh resistor R11, the other end is connected to a ground, and one end of the second triac diode T2 is connected to a connection between the tenth resistor R10 and the twelfth resistor R12, and the other end is connected to the ground, so as to realize signal transmission.

Referring to fig. 5, fig. 5 is a circuit diagram of a power supply module according to an embodiment of the utility model;

in an embodiment of the present utility model, the device further includes a power supply module 600 connected to the toning control module and the DMX module 200, where the power supply module 600 is used to provide a power supply voltage to keep the toning circuit running stably.

It should be noted that, the power supply module 600 includes a power supply chip, a fuse, a seventh diode D7, an eighth diode D8, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a thirteenth resistor R13, a fourteenth resistor R14, and a first inductor L1, the anode of the seventh diode D7 is connected to the fuse F1, the cathode is connected to the fifth capacitor C5, the first inductor L1 is connected to the power supply chip, the eighth diode D8 is connected between the power supply chip and the first inductor L1, the thirteenth resistor R13 is connected to the fourteenth resistor R14, the sixth capacitor C6 is connected in parallel to the fourteenth resistor R14, the eighth capacitor C8 is connected in parallel to the eighth diode D8, and the seventh capacitor C7 is connected in parallel to the sixth capacitor C6.

It will be appreciated that the voltage in this embodiment ranges from 12 volts to 24 volts.

In addition, another embodiment of the present utility model also provides a lighting apparatus including the color matching circuit in any one of the above embodiments. Therefore, the lighting apparatus has the advantageous effects brought by the color matching circuit in any of the above embodiments.

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

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

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A color matching circuit, comprising:

the key module is used for performing short-press and long-press operations;

the DMX module is connected with at least one light-emitting component and is used for switching the color temperature of the light-emitting component;

the color matching control module comprises a plurality of DMX interfaces and pulse pins, wherein each DMX interface is correspondingly connected with the corresponding DMX module, and only one DMX module corresponding to the DMX interface is used as a host; the color matching control module is connected with the key module, and triggers the pulse pin to output a first signal through the DMX interface when the key module is pressed for a short time, or triggers the color matching control module to switch the DMX module corresponding to the other DMX interface to serve as a host when the key module is pressed for a long time;

the color matching module is connected with the pulse pin and comprises a driving unit and an H-bridge unit which are connected, and under the condition that the driving unit receives the first signal, the H-bridge unit triggers the DMX module serving as a host to switch the color temperatures of all the light emitting components.

2. The toning circuit of claim 1, wherein the pulse pins include a first pulse pin and a second pulse pin, the first pulse pin and the second pulse pin respectively connected with the driving unit to output the first signal.

3. The tinting circuit of claim 1, further comprising a display module comprising a first light emitting diode and a second light emitting diode, the tinting control module comprising a master pin and a slave pin, the first light emitting diode connected to the master pin to display a first color temperature corresponding to the master, the second light emitting diode connected to the slave pin to display a second color temperature corresponding to the slave.

4. The color matching circuit according to claim 2, wherein the driving unit includes a first chip, a second chip, and a third chip, the first chip being connected to the first pulse pin and the second pulse pin to receive the first signal, the second chip and the third chip being connected to the first chip, respectively, the second chip and the third chip being connected to the H-bridge unit to output the first signal.

5. The color matching circuit according to claim 4, wherein the H-bridge unit comprises a left bridge arm unit and a right bridge arm unit, the left bridge arm unit comprises a first NMOS tube and a second NMOS tube, the right bridge arm unit comprises a third NMOS tube and a fourth NMOS tube, gates of the first NMOS tube and the second NMOS tube are respectively connected with the second chip to switch the color temperature of the light emitting component according to the first signal, a drain of the first NMOS tube is connected with a source of the second NMOS tube, drains of the third NMOS tube and the fourth NMOS tube are respectively connected with the third chip to adjust the color temperature of the light emitting component according to the first signal, and a drain of the third NMOS tube is connected with a source of the fourth NMOS tube.

6. The color matching circuit according to claim 4, wherein the driving unit further comprises a first diode, a second diode, a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor, wherein an anode of the first diode is connected to the first capacitor, a cathode of the first diode is connected to the second capacitor, the first diode is connected in parallel with the second chip, an anode of the second diode is connected to the third capacitor, a cathode of the second diode is connected to the fourth capacitor, and the second diode is connected in parallel with the third chip.

7. The toning circuit of claim 5, wherein the right leg unit further comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a third diode, a fourth diode, a fifth diode, and a sixth diode, wherein the second resistor is connected in parallel with the gate and the drain of the first NMOS transistor, the first resistor is connected in parallel with the gate and the drain of the first NMOS transistor, the third diode is connected in parallel with the first resistor, the fourth resistor is connected in parallel with the gate and the drain of the second NMOS transistor, the third resistor is connected in parallel with the gate and the drain of the second NMOS transistor, the fourth resistor is connected in parallel with the gate and the drain of the third NMOS transistor, the sixth resistor is connected in parallel with the gate and the drain of the third NMOS transistor, the fifth diode is connected in parallel with the sixth resistor, the seventh resistor is connected in parallel with the gate and the drain of the fourth NMOS transistor, and the eighth resistor is connected in parallel with the gate and the eighth diode.

8. The toning circuit of claim 2, wherein the DMX module includes a first triac diode, a second triac diode, a receiver, a driver, a ninth resistor, a tenth resistor, an eleventh resistor, and a twelfth resistor, the ninth resistor being connected to the receiver and the eleventh resistor, the tenth resistor being connected to the driver and the twelfth resistor, the first triac diode having one end connected to a junction of the ninth resistor and the eleventh resistor, the other end connected to a ground, the second triac diode having one end connected to a junction of the tenth resistor and the twelfth resistor, and the other end connected to a ground.

9. The toning circuit of claim 1, further comprising a power module coupled to the toning control module and the DMX module, the power module configured to provide a supply voltage.

10. A lighting device, characterized by: a toning circuit comprising the circuit of any one of claims 1 to 9.