CN219068418U - Driving circuit of lamp bead and refrigerator - Google Patents
Driving circuit of lamp bead and refrigerator Download PDFInfo
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- CN219068418U CN219068418U CN202223182437.0U CN202223182437U CN219068418U CN 219068418 U CN219068418 U CN 219068418U CN 202223182437 U CN202223182437 U CN 202223182437U CN 219068418 U CN219068418 U CN 219068418U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The embodiment of the application provides a drive circuit and refrigerator of lamp pearl, wherein, drive circuit includes: each light-emitting device group comprises a first light-emitting unit and a second light-emitting unit, and the negative electrode of the first light-emitting unit is connected with the positive electrode of the second light-emitting unit; each first control unit is connected with the positive electrode of the first light-emitting unit and the negative electrode of the second light-emitting unit of each light-emitting unit; each second control unit is connected with the negative electrode of the first light-emitting unit and the positive electrode of the second light-emitting unit of each light-emitting device group; if the first control unit connected with the positive electrode of the first light-emitting unit provides a first level and the second control unit connected with the negative electrode of the first light-emitting unit provides a second level, the first light-emitting unit is lightened, and the first level is higher than the second level; and if the first control unit connected with the positive electrode of the first light-emitting unit provides a third level and the second control unit connected with the negative electrode of the first light-emitting unit provides a fourth level, the second light-emitting unit is lightened, and the fourth level is higher than the third level.
Description
Technical Field
The application relates to the field of household appliances, in particular to a driving circuit of a lamp bead and a refrigerator.
Background
At present, an LED light-emitting lamp and a switch key are frequently used in an electrical product, at the initial stage, people use a straight pull type to drive an LED, and meanwhile, the switch key is also read by the straight pull type, so that the mode uses a plurality of IO ports of an MCU main control chip, and the more the IO ports are, the more expensive the MCU main control chip is, so that the cost is high.
Disclosure of Invention
The embodiment of the application provides a drive circuit and refrigerator of lamp pearl, can improve the problem that needs IO mouth more among the current drive circuit.
The embodiment of the application provides a drive circuit of lamp pearl, is applied to the refrigerator, drive circuit includes:
the LED lamp comprises a plurality of LED groups, wherein each LED group comprises a first LED unit and a second LED unit, and the negative electrode of the first LED unit is connected with the positive electrode of the second LED unit;
a plurality of first control units, each of which connects the positive electrode of the first light emitting unit and the negative electrode of the second light emitting unit of each of the plurality of light emitter groups;
a plurality of second control units, each of which connects the negative electrode of the first light emitting unit and the positive electrode of the second light emitting unit of each of the plurality of light emitting groups;
in each light-emitting device group, if a first control unit connected with the positive electrode of the first light-emitting unit provides a first level and a second control unit connected with the negative electrode of the first light-emitting unit provides a second level, the first light-emitting unit is lightened, the second light-emitting unit is turned off, and the first level is higher than the second level;
if the first control unit connected with the positive electrode of the first light emitting unit provides a third level and the second control unit connected with the negative electrode of the first light emitting unit provides a fourth level, the first light emitting unit is turned off, the second light emitting unit is lightened, and the fourth level is higher than the third level.
Optionally, each first control unit includes a first signal input end, a first switching tube and a first power interface, the first signal input end is connected with a control end of the first switching tube, and an output end of the first switching tube is connected with an anode of the first light emitting unit;
each second control unit comprises a second signal input end and a first resistor, the negative electrode of the first light-emitting unit is connected with one end of the first resistor, and the other end of the first resistor is connected with the second signal input end.
Optionally, each second control unit further includes a second switching tube and a second power interface, the second signal input end is connected with the control end of the second switching tube, and the output end of the second switching tube is connected with the positive electrode of the second light emitting unit;
each first control unit further comprises a second resistor, the negative electrode of the second light-emitting unit is connected with one end of the second resistor, and the other end of the second resistor is connected with the first signal input end.
Optionally, if the first signal input end outputs a high level signal and the second signal input end outputs a low level signal, the first switch tube is turned on, the second switch tube is turned off, the first light emitting unit is turned on, and the second light emitting unit is turned off;
if the first signal input end outputs a low-level signal, the second signal input end outputs a high-level signal, the second switch tube is turned on, the first switch tube is turned off, the second light emitting unit is turned on, and the first light emitting unit is turned off.
Optionally, the driving circuit further includes a driving chip, where the driving chip includes a plurality of first pins and a plurality of second pins, one of the first pins is connected to the first signal input end to control the first switching tube to be turned on or off, and one of the second pins is connected to the second signal input end to control the second switching tube to be turned on or off.
Optionally, the plurality of first pins are connected with the plurality of first signal input ends in a one-to-one correspondence manner, and the plurality of second pins are connected with the plurality of second signal input ends in a one-to-one correspondence manner.
Optionally, each first control unit further includes a third resistor and a fourth resistor, where one end of the third resistor is connected to the first signal input end, the other end of the third resistor is connected to the control end of the first switching tube, one end of the fourth resistor is connected to the first signal input end, and the other end of the fourth resistor is connected to the first power interface; and/or
Each second control unit further comprises a sixth resistor and a seventh resistor, one end of the sixth resistor is connected with the second signal input end, the other end of the sixth resistor is connected with the control end of the second switching tube, one end of the seventh resistor is connected with the second signal input end, and the other end of the seventh resistor is connected with the second power interface.
Optionally, the plurality of light emitter groups are arranged in an array, the second light emitting units in the light emitter groups in the same column are connected with the plurality of second signal input ends in a one-to-one correspondence manner, and the first light emitting units in the light emitter groups in the same row are connected with the plurality of first signal input ends in a one-to-one correspondence manner.
Optionally, the first light emitting unit includes one lamp bead or a plurality of lamp beads; and/or
The second light-emitting unit comprises a lamp bead or a plurality of lamp beads.
The embodiment of the application also provides a refrigerator, which comprises the driving circuit.
The beneficial effects of this application lie in: the driving circuit of the lamp bead comprises a plurality of light-emitting device groups, wherein each light-emitting device group comprises a first light-emitting unit and a second light-emitting unit, and the negative electrode of the first light-emitting unit is connected with the positive electrode of the second light-emitting unit; the first control units are connected with the positive electrode of the first light-emitting unit and the negative electrode of the second light-emitting unit of each light-emitting unit in the plurality of light-emitting unit groups; the first control units are connected with the cathodes of the first light-emitting units and the anodes of the second light-emitting units of each light-emitting unit in the plurality of light-emitting unit groups; in each light-emitting device group, if a first control unit connected with the positive electrode of a first light-emitting unit provides a first level and a second control unit connected with the negative electrode of the first light-emitting unit provides a second level, the first light-emitting unit is lightened, the second light-emitting unit is turned off, and the first level is higher than the second level; if the first control unit connected with the positive electrode of the first light emitting unit provides a third level and the second control unit connected with the negative electrode of the first light emitting unit provides a fourth level, the first light emitting unit is turned off, the second light emitting unit is lighted, and the fourth level is higher than the third level. According to the embodiment of the application, different signals are input through controlling the combination of the first control unit and the second control unit, the state of each light-emitting unit can be independently controlled, the negative electrode of the first light-emitting unit in each group of light-emitting device groups is connected with the positive electrode of the second light-emitting unit, two lamp beads can share one group of the first control unit and the second control unit, one IO port can simultaneously control a plurality of lamp beads, the IO ports are further reduced, and cost is saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts throughout the following description.
Fig. 1 is a schematic structural diagram of a driving circuit of a lamp bead according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a first structure of the driving circuit of the lamp bead shown in fig. 1.
Fig. 3 is a schematic diagram of a second structure of the driving circuit of the lamp bead shown in fig. 1.
Fig. 4 is a schematic diagram of a third structure of the driving circuit of the lamp bead shown in fig. 1.
Fig. 5 is a schematic diagram of a fourth configuration of the driving circuit of the lamp bead shown in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the existing driving mode of the lamp beads, a plurality of IO ports of the main control chip are needed, and the more the IO ports are, the more expensive the MCU main control chip is, so that the cost is high.
Therefore, in order to solve the above problems, the present application proposes a driving circuit of a lamp bead and a refrigerator. The present application is further described below with reference to the drawings and embodiments.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a driving circuit of a lamp bead according to an embodiment of the present application. Fig. 2 is a schematic diagram of a first structure of the driving circuit of the lamp bead shown in fig. 1. The embodiment of the application provides a driving circuit 100 of a lamp bead, which is applied to a refrigerator, wherein the driving circuit 100 of the lamp bead comprises a plurality of light-emitting device groups 310, each light-emitting device group 310 comprises a first light-emitting unit 311 and a second light-emitting unit 312, and the cathode of the first light-emitting unit 311 is connected with the anode of the second light-emitting unit 312; a plurality of first control units 10, each first control unit 10 connecting the positive electrode of the first light emitting unit 311 and the negative electrode of the second light emitting unit 312 of each light emitting group 310 of the plurality of light emitting groups 310; a plurality of second control units 20, each second control unit 20 connecting the negative electrode of the first light emitting unit 311 and the positive electrode of the second light emitting unit 312 of each light emitting group 310 of the plurality of light emitting groups 310; in each light emitter group 310, if the first control unit 10 connected to the positive electrode of the first light emitting unit 311 provides a first level and the second control unit 20 connected to the negative electrode of the first light emitting unit 311 provides a second level, the first light emitting unit 311 is turned on, the second light emitting unit 312 is turned off, and the first level is higher than the second level; if the first control unit 10 connected to the positive electrode of the first light emitting unit 311 provides the third level and the second control unit 20 connected to the negative electrode of the first light emitting unit 311 provides the fourth level, the first light emitting unit 311 is turned off, the second light emitting unit 312 is turned on, and the fourth level is higher than the third level. According to the embodiment of the application, the first control unit 10 and the second control unit 20 are controlled to input different signals in a combined mode, the state of each light emitting unit can be independently controlled, the negative electrode of the first light emitting unit 311 in each group of light emitter groups 310 is connected with the positive electrode of the second light emitting unit 312, two lamp beads can share one group of the first control unit 10 and the second control unit 20, one IO port can simultaneously control a plurality of lamp beads, the IO ports are further reduced, and cost is saved.
The first level may be a high level, the second level may be a low level, the third level may be a low level, and the fourth level may be a high level. The first level and the fourth level may be equal or unequal, and the second level and the third level may be equal or unequal, as desired.
Wherein when the first control unit 10 provides a high level and the second control unit 20 provides a low level, the first light emitting unit 311 connected to the first control unit 10 and the second control unit 20 is turned on, and the second light emitting unit 312 is turned off. When the first control unit 10 provides a low level and the second control unit 20 provides a high level, the second light emitting unit 312 connected to the first control unit 10 and the second control unit 20 is turned on, and the first light emitting unit 311 is turned off. When the first control unit 10 outputs a high level and the second control unit 20 outputs a high level, both the first light emitting unit 311 and the second light emitting unit 312 in the light emitter group 310 connecting the first control unit 10 and the second control unit 20 are turned off; when the first control unit 10 outputs a low level and the second control unit 20 outputs a low level, both the first light emitting unit 311 and the second light emitting unit 312 in the light emitter group 310 connecting the first control unit 10 and the second control unit 20 are turned off; by controlling the first control unit 10 and the second control unit 20 to input different signals to control the first light emitting unit 311 and the second light emitting unit 312 to be turned on or off respectively, the control mode of the lamp beads is simpler, the structure of the driving circuit 100 is more compact, and the wire harness is reduced.
When the number of the first control units 10 is equal to the number of the second control units 20 and the plurality of light emitter groups 310 are in an array, the second light emitting units 312 in the light emitter groups 310 in the same column are connected in one-to-one correspondence with the plurality of second control units 20, and the first light emitting units 311 in the light emitter groups 310 in the same row are connected in one-to-one correspondence with the plurality of first control units 10.
In this embodiment, the driving circuit 100 includes 3 rows of bead units 30, 3 first control units 10 and 3 second control units 20, each row of bead units 30 includes 3 groups of light emitters 310, each group of light emitters 310 includes a first light emitting unit 311 and a second light emitting unit 312, and a cathode of the first light emitting unit 311 is connected with an anode of the second light emitting unit 312. It will be appreciated that the embodiments of the present application are described above as examples, and should not be construed as limiting the above, and the specific arrangement of the driving circuit 100 may be set according to the actual situation, and no specific limitation is made here.
The driving circuit 100 includes a first row of bead units, a second row of bead units, and a third row of bead units, and a first signal input to the third row of bead units from one of the 3 first control units 10 is connected to the first row of bead units, one of the first control units 10 is connected to the second row of bead units, and the other of the first control units 10 is connected to the third row of bead units. One second control unit 20 of the 3 second control units 20 is connected with the first row of lamp bead units, one second control unit 20 is connected with the second row of lamp bead units, and the other second control unit 20 is connected with the third row of lamp bead units.
Each first control unit 10 includes a first signal input end 110, a first switching tube Q1, and a first power interface VSS1, where the first signal input end 110 is connected to a control end of the first switching tube Q1, an output end of the first switching tube Q1 is connected to a first light emitting unit 311 in the light emitter group 310, an input end of each first switching tube Q1 is connected to the first power interface VSS1, and an output end of the first switching tube Q1 is connected to an anode of the first light emitting unit 311.
Each second control unit includes a second signal input end 210 and a first resistor R1, the positive electrode of the second light emitting unit 312 is connected to one end of the first resistor R1, and the other end of the first resistor R1 is connected to the second signal input end 210.
For convenience of understanding, a first control unit 10 and a second control unit 20 will be described below as examples, when the first control unit 10 is used as an input port and the second control unit 20 is used as an output port, that is, the first control unit 10 provides a high level, and when the second control unit 20 provides a low level, that is, when the first signal input terminal 110 outputs a high level signal and the second signal input terminal 210 outputs a low level signal, the first switching tube Q1 is turned on, the second switching tube Q2 is turned off, and the first light emitting unit 311 connected to the first signal input terminal 110 and the second signal input terminal 210 is turned on. For example, the current output by the first power interface VSS1 flows to the first light emitting unit 311 through the first switching tube Q1, so that the first light emitting unit 311 is turned on, and the current flows from the first light emitting unit 311 to the second light emitting unit 312, flows to the second signal input terminal 210 through the first resistor R1, so that the first light emitting unit 311 connected to the first control unit 10 is turned on.
The first signal input terminal 110 may be an output port or an input port, and the second signal input terminal 210 may be an output port or an input port. Each second control unit 20 further includes a second switching tube Q2 and a second power interface VSS2, the second signal input end 210 is connected to the control end of the second switching tube Q2, and the output end of the second switching tube Q2 is connected to the second light emitting unit 312 in the light emitter group 310; the input end of each second switching tube Q2 is connected to the second power interface VSS2, and the output end of the second switching tube Q2 is connected to the positive electrode of the second light emitting unit 312.
Each first control unit 10 further includes a fifth resistor R5, the positive electrode of the first light emitting unit 311 is connected to one end of the fifth resistor R5, and the other end of the fifth resistor R5 is connected to the first signal input terminal 110.
For convenience of understanding, a first control unit 10 and a second control unit 20 will be described below as an example, when the first control unit 10 is used as an output port and the second control unit 20 is used as an input port, that is, the first control unit 10 provides a low level, and when the second control unit 20 provides a high level, that is, when the first signal input terminal 110 outputs a low level signal and the second signal input terminal 210 outputs a high level signal, the second switching tube Q2 is turned on, the first switching tube Q1 is turned off, and the second light emitting unit 312 connecting the first control unit 10 and the second control unit 20 is turned on. Therefore, the current output by the second power interface VSS2 flows to the second light emitting unit 312 through the second switching tube Q2, so that the second light emitting unit 312 is turned on, and the current flows from the second light emitting unit 312 to the first light emitting unit 311, passes through the fifth resistor R5 and is connected to the first signal input terminal 110, so that the second light emitting unit 312 connected to the second control unit 20 is turned on.
In other embodiments, each first control unit 10 further includes a third resistor R3 and a fourth resistor R4, one end of the third resistor R3 is connected to the first signal input terminal 110, the other end of the third resistor R3 is connected to the control terminal of the first switching tube Q1, one end of the fourth resistor R4 is connected to the first signal input terminal 110, and the other end of the fourth resistor R4 is connected to the first power interface VSS1. The third resistor R3 is mainly used for protecting the first signal input terminal 110, and preventing the first signal input terminal 110 from being damaged due to excessive current. The fourth resistor R4 is mainly used for pulling up the signal.
In some embodiments, each second control unit 20 further includes a sixth resistor R6 and a seventh resistor R7, one end of the sixth resistor R6 is connected to the second signal input terminal 210, the other end of the sixth resistor R6 is connected to the control terminal of the second switching tube Q2, one end of the seventh resistor R7 is connected to the second signal input terminal 210, and the other end of the seventh resistor R7 is connected to the second power interface VSS2. The sixth resistor R6 is mainly used for protecting the first signal input terminal 110, preventing the first signal input terminal 110 from being damaged due to excessive current, and the seventh resistor R7 is mainly used for pulling up the signal.
The first switching tube Q1 may be a triode, a transistor or a field effect tube, and the second switching tube Q2 may be a triode, a transistor or a field effect tube, which may be specifically set according to practical situations, and is not specifically limited herein.
The driving circuit 100 further includes a driving chip, where the driving chip includes a plurality of first pins and a plurality of second pins, and one first pin is configured to be connected to one first signal input terminal 110, so as to provide different signals to the first signal input terminal 110 through the first pin, thereby controlling the first switching tube Q1 to be turned on or off, and further controlling the first light emitting unit 311 to be turned on or off. A second pin is connected to a second signal input terminal 210, so as to provide different signals to the second signal input terminal 210 through the second pin, thereby controlling the second switching tube Q2 to be turned on or off, and further controlling the second light emitting unit 312 to be turned on or off.
In some embodiments, the plurality of first pins are connected in one-to-one correspondence with the plurality of first signal inputs 110, and the plurality of second pins are connected in one-to-one correspondence with the plurality of second signal inputs 210.
It will be appreciated that in some embodiments, the first power interface VSS1 and the second power interface VSS2 are not provided in the driving circuit 100, and are connected to the first control unit 10 and the second control unit 20 through pins of the driving chip to directly provide the first light emitting unit 311 and the second light emitting unit 312 with electrical levels.
With continued reference to fig. 3, fig. 3 is a schematic diagram of a second structure of the driving circuit of the lamp bead shown in fig. 1. In order to control more light emitter groups 310, a first control unit 10 may be added when a row of bead units 30 is added, or a second control unit 20 may be added when a row of bead units 30 is added, so that the IO port may be further reduced, and the cost may be reduced.
With continued reference to fig. 4, fig. 4 is a schematic diagram of a third structure of the driving circuit of the lamp bead shown in fig. 1. When the number of the first control units 10 is equal to the number of the second control units 20, and the number of columns in the array is greater than the number of rows in the plurality of light emitter groups 310, the second light emitting units 312 in the light emitter groups 310 located in different rows are connected to the plurality of second control units 20 in a one-to-one correspondence manner, and the first light emitting units 311 of the light emitter groups 310 in at least two different columns are connected to the same first control unit 10. That is, when the number of columns of the light bead units 30 is greater than the number of the first control units 10, and the number of columns of the light bead units 30 is the same as the number of the second control units 20, the light emitter groups 310 of different rows are connected to the input units of the second signal input terminals 210, and at least one first control unit 10 is connected to the light emitter groups 310 of multiple columns.
With continued reference to fig. 5, fig. 5 is a schematic diagram of a fourth structure of the driving circuit of the lamp bead shown in fig. 1. When the number of the first control units 10 is equal to the number of the second control units 20, and the number of rows in the array is greater than the number of columns in the plurality of light emitter groups 310, the second light emitting units 312 in the light emitter groups 310 in different columns are connected to the plurality of second control units 20 in a one-to-one correspondence, and the first light emitting units 311 in the light emitter groups 310 in at least two different rows are connected to the same second control unit 20. That is, when the number of rows of the light bead units 30 is greater than the number of the second control units 20, and the number of columns of the light bead units 30 is the same as the number of the first control units 10, the light emitter groups 310 in different columns are connected to the input units of the first signal input terminals 110 correspondingly, and at least one second control unit 20 is connected to the light emitter groups 310 in multiple rows.
In other embodiments, a plurality of rows may be combined in a certain row, that is, the first light emitting unit 311 may include one bead or a plurality of beads, or the second light emitting unit 312 may include one bead or a plurality of beads, that is, the first light emitting unit 311 may include a plurality of beads, and the second light emitting unit 312 may include a plurality of beads. The plurality of beads may be connected in series or in parallel according to voltage or current requirements, for example, if voltage is guaranteed, the plurality of beads may be connected in parallel, if current is guaranteed, the plurality of beads may be connected in series, and a specific connection manner may be set according to actual conditions, which is not limited herein.
The embodiment of the application also provides a refrigerator, which comprises the driving circuit.
The driving circuit of the lamp bead and the refrigerator provided by the embodiment of the application are described in detail. Specific examples are set forth herein to illustrate the principles and embodiments of the present application, with the description of the examples given above only to assist in understanding the present application. Meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the contents of the present specification should not be construed as limiting the present application in summary.
Claims (10)
1. A driving circuit of a lamp bead, which is applied to a refrigerator, characterized in that the driving circuit comprises:
the LED lamp comprises a plurality of LED groups, wherein each LED group comprises a first LED unit and a second LED unit, and the negative electrode of the first LED unit is connected with the positive electrode of the second LED unit;
a plurality of first control units, each of which connects the positive electrode of the first light emitting unit and the negative electrode of the second light emitting unit of each of the plurality of light emitter groups;
a plurality of second control units, each of which connects the negative electrode of the first light emitting unit and the positive electrode of the second light emitting unit of each of the plurality of light emitter groups;
in each light-emitting device group, if a first control unit connected with the positive electrode of the first light-emitting unit provides a first level and a second control unit connected with the negative electrode of the first light-emitting unit provides a second level, the first light-emitting unit is lightened, the second light-emitting unit is turned off, and the first level is higher than the second level;
if the first control unit connected with the positive electrode of the first light emitting unit provides a third level and the second control unit connected with the negative electrode of the first light emitting unit provides a fourth level, the first light emitting unit is turned off, the second light emitting unit is lightened, and the fourth level is higher than the third level.
2. The driving circuit according to claim 1, wherein,
each first control unit comprises a first signal input end, a first switch tube and a first power interface, wherein the first signal input end is connected with the control end of the first switch tube, and the output end of the first switch tube is connected with the positive electrode of the first light-emitting unit;
each second control unit comprises a second signal input end and a first resistor, the negative electrode of the first light-emitting unit is connected with one end of the first resistor, and the other end of the first resistor is connected with the second signal input end.
3. The driving circuit according to claim 2, wherein,
each second control unit further comprises a second switching tube and a second power interface, wherein the second signal input end is connected with the control end of the second switching tube, and the output end of the second switching tube is connected with the anode of the second light-emitting unit;
each first control unit further comprises a second resistor, the negative electrode of the second light-emitting unit is connected with one end of the second resistor, and the other end of the second resistor is connected with the first signal input end.
4. The driving circuit according to claim 3, wherein,
if the first signal input end outputs a high-level signal and the second signal input end outputs a low-level signal, the first switch tube is turned on, the second switch tube is turned off, the first light-emitting unit is turned on, and the second light-emitting unit is turned off;
if the first signal input end outputs a low-level signal, the second signal input end outputs a high-level signal, the second switch tube is turned on, the first switch tube is turned off, the second light emitting unit is turned on, and the first light emitting unit is turned off.
5. The driving circuit of claim 3, further comprising a driving chip, wherein the driving chip comprises a plurality of first pins and a plurality of second pins, one of the first pins is connected to one of the first signal input terminals to control the first switching tube to be turned on or off, and one of the second pins is connected to one of the second signal input terminals to control the second switching tube to be turned on or off.
6. The driving circuit of claim 5, wherein the plurality of first pins are connected in one-to-one correspondence with the plurality of first signal inputs, and the plurality of second pins are connected in one-to-one correspondence with the plurality of second signal inputs.
7. A driving circuit according to claim 3, wherein each of the first control units further comprises a third resistor and a fourth resistor, one end of the third resistor is connected to the first signal input terminal, the other end of the third resistor is connected to the control terminal of the first switching tube, one end of the fourth resistor is connected to the first signal input terminal, and the other end of the fourth resistor is connected to the first power interface; and/or
Each second control unit further comprises a sixth resistor and a seventh resistor, one end of the sixth resistor is connected with the second signal input end, the other end of the sixth resistor is connected with the control end of the second switching tube, one end of the seventh resistor is connected with the second signal input end, and the other end of the seventh resistor is connected with the second power interface.
8. The driving circuit according to claim 1, wherein,
the plurality of light emitter groups are arranged in an array, the second light emitting units in the light emitter groups positioned in the same column are connected with the plurality of second signal input ends in a one-to-one correspondence manner, and the first light emitting units in the light emitter groups positioned in the same row are connected with the plurality of first signal input ends in a one-to-one correspondence manner.
9. The drive circuit of claim 1, wherein the first light emitting unit comprises a single light bulb or a plurality of light bulbs; and/or
The second light-emitting unit comprises a lamp bead or a plurality of lamp beads.
10. A refrigerator, characterized in that the refrigerator comprises the drive circuit of any one of the above 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223182437.0U CN219068418U (en) | 2022-11-28 | 2022-11-28 | Driving circuit of lamp bead and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223182437.0U CN219068418U (en) | 2022-11-28 | 2022-11-28 | Driving circuit of lamp bead and refrigerator |
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| Publication Number | Publication Date |
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| CN219068418U true CN219068418U (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223182437.0U Active CN219068418U (en) | 2022-11-28 | 2022-11-28 | Driving circuit of lamp bead and refrigerator |
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| CN (1) | CN219068418U (en) |
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