CN112437513A - Control circuit capable of independently controlling single LED in series LED lamp bank - Google Patents
Control circuit capable of independently controlling single LED in series LED lamp bank Download PDFInfo
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Abstract
The invention relates to a control circuit capable of independently controlling a single LED in a series LED lamp group. The series LED lamp group comprises a plurality of LED lamps which are connected in series, and each LED lamp corresponds to one switch circuit; the power supply is connected with and supplies power to the series LED lamp group; the main controller is respectively connected with each switch circuit, and each switch circuit is correspondingly connected to two ends of one LED lamp in parallel; the main controller controls the on-off state of each switch circuit; if the main controller controls a certain switching circuit to be switched on, the LED lamp corresponding to the switching circuit is in short circuit; and if the main controller controls a certain switching circuit to be switched off, the LED lamp corresponding to the switching circuit is not short-circuited. According to the invention, an independent switch circuit is arranged for each LED in the series LED lamp group, so that independent control of each LED is realized, and the switch circuit can provide a standby bypass when the LED is damaged, thereby ensuring that the whole series LED lamp group can work normally.
Description
Technical Field
The invention relates to the field of LEDs, in particular to a control circuit capable of independently controlling a single LED in a series LED lamp bank.
Background
LEDs (light emitting diodes) are widely used in production and life, and a plurality of LEDs connected in series is a common usage method. The existing LED series lamp group is only connected with power supplies at two ends of the LED series lamp group to supply power for the LED series lamp group, but can not realize the adjustment of a single LED in the LED series lamp group. For example, when the parameters and colors of the LEDs in the LED series lamp group are different, the power supply mode of the series power supply cannot adjust the brightness of a single LED, so that the brightness of the LED series lamp group is inconsistent; for another example, when a certain LED in the series circuit is damaged, the whole LED series lamp set cannot work; for another example, the switch of one of the LEDs in the LED series lamp set cannot be controlled individually.
Disclosure of Invention
The present invention is directed to a control circuit for independently controlling individual LEDs in a series LED lamp set, which overcomes the above-mentioned drawbacks of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: constructing a control circuit capable of independently controlling a single LED in a series LED lamp set, wherein the series LED lamp set comprises a plurality of LED lamps connected in series, the control circuit comprises a power supply, a main controller and a plurality of switch circuits, and each LED lamp corresponds to one switch circuit;
the power supply is connected with and supplies power to the series LED lamp group; the main controller is respectively connected with each switch circuit, and each switch circuit is correspondingly connected to two ends of one LED lamp in parallel; the main controller controls the on-off state of each switch circuit;
if the main controller controls a certain switch circuit to be switched on, the LED lamp corresponding to the switch circuit is in short circuit; and if the main controller controls the switch circuit to be disconnected, the LED lamp corresponding to the switch circuit is not short-circuited.
Further, in the control circuit capable of independently controlling a single LED in the series LED lamp set, the switch circuit is a MOS transistor Q1, a source and a drain of the MOS transistor Q1 are respectively connected to two ends of the LED lamp, a gate of the MOS transistor Q1 is connected to the main controller, and the main controller controls on/off of the MOS transistor Q1; or
The switching circuit is a triode Q2, a collector and an emitter of the triode Q2 are respectively connected with two ends of the LED lamp, a base of the triode Q2 is connected with the main controller, and the main controller controls the on-off of the triode Q2; or
The LED lamp is characterized in that the switch circuit is a silicon controlled rectifier T, the anode and the cathode of the silicon controlled rectifier T are respectively connected with the two ends of the LED lamp, the control electrode of the silicon controlled rectifier T is connected with the main controller, and the main controller controls the on-off of the silicon controlled rectifier T.
Furthermore, in the control circuit capable of independently controlling a single LED in the series LED lamp group, the control circuit further comprises a plurality of voltage-regulator tubes Z, and each LED lamp corresponds to one voltage-regulator tube Z; each voltage-stabilizing tube Z is correspondingly connected to two ends of one LED lamp in parallel, the anode of each voltage-stabilizing tube Z is connected with the cathode of the corresponding LED lamp, and the cathode of each voltage-stabilizing tube Z is connected with the anode of the corresponding LED lamp; or
The control circuit further comprises a plurality of resistors R1, one resistor R1 corresponding to each LED lamp; the resistor R1 is correspondingly connected in parallel at two ends of one LED lamp.
Furthermore, in the control circuit capable of independently controlling a single LED in the series LED lamp set, the control circuit further includes a plurality of switch control circuits, each switch circuit corresponds to one switch control circuit, and the switch control circuits are connected with the switch circuits in a one-to-one correspondence manner; the main controller is respectively connected with each switch control circuit, and the on-off of the corresponding switch circuit is controlled by the switch control circuit.
Further, in the control circuit of the present invention, which can independently control a single LED in a series LED lamp set, the switch control circuit includes: the circuit comprises a triode Q3, a triode Q4, a triode Q5, a resistor R2, a resistor R3, a resistor R4 and a capacitor C;
the base electrode of the triode Q5 is connected with the main controller, the emitter electrode of the triode Q5 is grounded through the resistor R4, the emitter electrode of the triode Q5 is grounded through the capacitor C, and the collector electrode of the triode Q5 is respectively connected with the base electrode of the triode Q3 and the base electrode of the triode Q4 through the resistor R3; the collector of the triode Q4 is grounded, and the emitter of the triode Q4 is respectively connected with the emitter of the triode Q3 and the switching circuit; the base of the transistor Q3 is connected with the switch circuit through the resistor R2, and the collector of the transistor Q3 is connected with the switch circuit.
Further, in the control circuit capable of independently controlling a single LED in the series LED lamp set according to the present invention, the lighting process of the LED lamp is as follows: the power supply supplies power to the series LED lamp bank, the triode Q5 receives a high level signal sent by the main controller, the triode Q5 is conducted, the triode Q4 is conducted, the triode Q3 is not conducted, the switch circuit is disconnected, and the LED lamp corresponding to the switch circuit is lightened;
the turn-off process of the LED lamp is as follows: the power supply supplies power to the series LED lamp bank, the triode Q5 receives a low level signal sent by the main controller, the triode Q5 is not conducted, the triode Q4 is not conducted, the triode Q3 is conducted, the switch circuit is switched on, and the LED lamp corresponding to the switch circuit is switched off by short circuit.
Further, in the control circuit capable of independently controlling a single LED in the series-connected LED lamp group of the present invention, the main controller is connected to both ends of each of the LED lamps, and acquires the operating state of the corresponding LED lamp by collecting voltage signals at both ends of the LED lamp.
Further, in the control circuit capable of independently controlling a single LED in the series-connected LED lamp set according to the present invention, the main controller controls the on-off frequency and/or the on-off time of the switch circuit to realize the brightness control corresponding to the LED lamp.
Further, in the control circuit capable of independently controlling a single LED in a series LED lamp set according to the present invention, the LED lamp includes at least two LEDs, and the at least two LEDs are connected in parallel and/or in series.
Further, in the control circuit capable of independently controlling a single LED in the series LED lamp group, the power supply comprises a power supply controller and a constant current adjustable controller, and the main controller is respectively connected with the power supply controller and the constant current adjustable controller; and two ends of the series LED lamp set are respectively connected with the power supply controller and the constant-current adjustable controller, so that power supply adjustment of the series LED lamp set is realized.
The control circuit capable of independently controlling the single LED in the series LED lamp group has the following beneficial effects: according to the invention, an independent switch circuit is arranged for each LED in the series LED lamp group, so that independent control of each LED is realized, and the switch circuit can provide a standby bypass when the LED is damaged, thereby ensuring that the whole series LED lamp group can work normally.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a circuit diagram of a control circuit for independently controlling individual LEDs in a series LED light group according to one embodiment;
FIG. 2 is a circuit diagram of a control circuit for independently controlling individual LEDs in a series LED light bank according to one embodiment;
FIG. 3 is a circuit diagram of a control circuit for independently controlling individual LEDs in a series LED light bank according to one embodiment;
fig. 4 is a circuit diagram of a control circuit capable of independently controlling a single LED in a series LED lamp set according to an embodiment.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Examples
Referring to fig. 1, in the control circuit capable of independently controlling a single LED in a series LED lamp set of the present embodiment, the series LED lamp set includes a plurality of LED lamps connected in series, which are LED1, LED2, · LEDn, LED1, LED2, · LEDn may be LED lamps with different colors. The control circuit comprises a power supply, a main controller and a plurality of switch circuits, each LED lamp corresponds to one switch circuit, and the power supply is connected with and supplies power for the LED lamp groups connected in series. The main controller is respectively connected with each switch circuit, and each switch circuit is correspondingly connected with two ends of one LED lamp in parallel. The main controller controls the on-off state of each switch circuit, the on-off state comprises the on-off state of the switch circuit and the off-off state of the switch circuit, and the main controller can independently control the on-off state of one or more LED lamps.
If the main controller controls a certain switching circuit to be switched on, the LED lamp corresponding to the switching circuit is in short circuit, and the LED lamp is turned off. If the main controller controls a certain switching circuit to be switched off, the LED lamp corresponding to the switching circuit is not short-circuited and is normally connected into the series-connected LED lamps. If a certain LED lamp in the current series LED lamp group is broken, the whole series LED lamp group can be disconnected, the problem is solved by the embodiment, after the certain LED lamp is broken, the main controller controls the switch-on of the switch circuit corresponding to the LED lamp, the LED lamp is short-circuited, and the whole series LED lamp group can normally work.
Further, the working parameters of each LED lamp in the series LED lamp set are different, but the current of each LED lamp is the same based on the series connection of the plurality of LED lamps, which may cause the brightness of some LED lamps not to meet the design requirement, for example, the brightness of the LED lamps in the series LED lamps is not uniform, which affects the visual effect. The embodiment solves the problem, and the main controller in the embodiment controls the on-off frequency and/or the on-off time of the switch circuit to realize the on-off control of the corresponding LED lamp, so that the brightness control of a certain LED lamp in the series LED lamp group is realized.
Alternatively, each LED lamp in the series LED lamp set in this embodiment may also be an LED array, that is, the LED lamp includes at least two LEDs, the at least two LEDs are connected in parallel and/or in series, and the at least two LEDs are connected in parallel and/or in series as a whole and connected in parallel with the switch circuit.
Alternatively, in the present embodiment, the master circuit and the plurality of switches are opened as an all-in-one integrated chip or an all-in-one integrated circuit.
This embodiment sets up independent switch circuit for every LED in the LED banks of establishing ties, realizes the independent control to every LED, and this switch circuit can provide reserve bypass when LED damages, guarantees that whole series connection LED banks can normally work.
Examples
On the basis of the above embodiment, in order to know the working state of each LED lamp in real time, in the control circuit of a single LED in the LED lamp set capable of being controlled in series independently in this embodiment, the main controller is connected to both ends of each LED lamp respectively, and the working state of the corresponding LED lamp is known by collecting voltage signals at both ends of the LED lamp. After the working state of the LED lamp is obtained, the main controller controls the on-off state of the switch circuit according to a preset control algorithm, and intelligent control is achieved. For example, when the voltage drop across a certain LED lamp is 0V, it indicates that the LED lamp is damaged, and at this time, the main controller controls the switch circuit corresponding to the damaged LED lamp to be turned on, so that the normal operation of the entire series LED lamp set can be restored.
Alternatively, to realize remote control of the series LED lamp set, the control circuit of this embodiment further includes a communication module for sending the voltage signals collected by the main controller at two ends of the LED lamp, for example, sending the collected voltage signals at two ends of the LED lamp to a remote control terminal or a server. The communication module can select a wired communication module or a wireless communication module, and the wireless communication module comprises but is not limited to a 2G wireless communication module, a 3G wireless communication module, a 4G wireless communication module, a 5G wireless communication module, a Bluetooth module, a WIFI module and the like.
Furthermore, the communication module is connected with the main controller, the communication module is also used for receiving a control instruction which is sent from the outside and used for controlling the on-off state of the switch circuit, and the communication module transmits the received control instruction to the main controller. And after receiving the control command, the main controller controls the on-off state of the switch circuit according to the control command.
Examples
On the basis of the above embodiments, referring to fig. 3 and 4, in the control circuit of this embodiment, which can independently control a single LED in a series LED lamp set, a power supply includes a power supply controller and a constant current adjustable controller, and the main controller is respectively connected to the power supply controller and the constant current adjustable controller; and two ends of the series LED lamp set are respectively connected with the power supply controller and the constant-current adjustable controller, so that the power supply adjustment of the series LED lamp set is realized. The power supply controller and the constant current adjustable controller may refer to the prior art, and are not described in detail in this embodiment.
Examples
Referring to fig. 2 and fig. 4, on the basis of the above embodiments, the control circuit in the control circuit capable of independently controlling a single LED in the series LED lamp group of this embodiment further includes a plurality of voltage regulator tubes Z, and each LED lamp corresponds to one voltage regulator tube Z; each voltage-stabilizing tube Z is correspondingly connected with two ends of one LED lamp in parallel, the anode of the voltage-stabilizing tube Z is connected with the cathode of the corresponding LED lamp, and the cathode of the voltage-stabilizing tube Z is connected with the anode of the corresponding LED lamp. Or
Referring to fig. 3, the control circuit in the control circuit capable of independently controlling a single LED in the series LED lamp group of the present embodiment further includes a plurality of resistors R1, one resistor R1 for each LED lamp; the resistor R1 is correspondingly connected in parallel at two ends of one LED lamp.
In this embodiment, the voltage regulator tube Z or the resistor R1 is used as a bypass of each LED lamp in the series LED lamp group, and when a certain LED lamp is damaged, the connection of the whole series LED lamp group can be continuously maintained through the voltage regulator tube Z or the resistor R1 connected in parallel with the certain LED lamp.
Examples
On the basis of the above embodiments, the control circuit capable of independently controlling a single LED in a series LED lamp set of the present embodiment provides three implementation manners of the switch circuit:
first implementation of the switching circuit: referring to fig. 2, the switching circuit is a MOS transistor Q1, a source and a drain of the MOS transistor Q1 are respectively connected to two ends of the LED lamp, a gate of the MOS transistor Q1 is connected to a main controller, and the main controller controls on/off of the MOS transistor Q1.
Second implementation of the switching circuit: the switching circuit is a triode Q2, a collector and an emitter of a triode Q2 are respectively connected with two ends of the LED lamp, a base of a triode Q2 is connected with the main controller, and the main controller controls the on-off of the triode Q2.
The third implementation manner of the switching circuit: referring to fig. 3, the switching circuit is a thyristor T, an anode and a cathode of the thyristor T are respectively connected to two ends of the LED lamp, a control electrode of the thyristor T is connected to a main controller, and the main controller controls on/off of the thyristor T.
The above three embodiments of the switch circuit are used to illustrate an implementation example of the switch circuit, and are not used to limit the implementation manner of the switch circuit, and other single elements or circuits capable of implementing the function of the switch circuit all belong to the protection scope of the present embodiment.
Examples
Referring to fig. 2 and fig. 3, on the basis of the above embodiments, the control circuit in the control circuit capable of independently controlling a single LED in the series LED lamp group of this embodiment further includes a plurality of switch control circuits, each switch control circuit corresponds to one switch control circuit, and the switch control circuits are connected to the switch circuits in a one-to-one correspondence manner; the main controller is respectively connected with each switch control circuit, and the on-off of the corresponding switch circuit is controlled through the switch control circuit.
Further, the switch control circuit of the present embodiment includes: the circuit comprises a triode Q3, a triode Q4, a triode Q5, a resistor R2, a resistor R3, a resistor R4 and a capacitor C, wherein the base electrode of the triode Q5 is connected with the main controller, the emitter electrode of the triode Q5 is grounded through the resistor R4, the emitter electrode of the triode Q5 is grounded through the capacitor C, and the collector electrode of the triode Q5 is respectively connected with the base electrode of the triode Q3 and the base electrode of the triode Q4 through the resistor R3; the collector of the triode Q4 is grounded, and the emitter of the triode Q4 is respectively connected with the emitter of the triode Q3 and the switching circuit; the base of the transistor Q3 is connected with the switch circuit through a resistor R2, and the collector of the transistor Q3 is connected with the switch circuit. The resistor R2 and the resistor R3 are voltage dividing resistors.
The control process of the control circuit capable of independently controlling the single LED in the series LED lamp set of the present embodiment includes: the lighting process of the LED lamp and the turn-off process of the LED lamp are respectively described below:
the lighting process of the LED lamp is as follows: the power supply supplies power for the series connection LED banks, and triode Q5 receives the high level signal that main control unit sent, and triode Q5 switches on, and triode Q4 switches on, and triode Q3 does not switch on, then the switching circuit disconnection, MOS pipe Q1 disconnection promptly, and the LED lamp that switching circuit corresponds lights.
The turn-off process of the LED lamp comprises the following steps: the power supply supplies power for the series connection LED lamp group, triode Q5 receives the low level signal that main control unit sent, and triode Q5 does not switch on, and triode Q4 does not switch on, and triode Q3 switches on, then switching circuit switch-on, MOS pipe Q1 switches on promptly, and the LED lamp that switching circuit corresponds is by the short circuit shutoff.
This embodiment sets up independent switch circuit for every LED in the LED banks of establishing ties, realizes the independent control to every LED, and this switch circuit can provide reserve bypass when LED damages, guarantees that whole series connection LED banks can normally work.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. A control circuit capable of independently controlling a single LED in a series LED lamp set, wherein the series LED lamp set comprises a plurality of LED lamps connected in series, and the control circuit comprises a power supply, a main controller and a plurality of switch circuits, and each LED lamp corresponds to one switch circuit;
the power supply is connected with and supplies power to the series LED lamp group; the main controller is respectively connected with each switch circuit, and each switch circuit is correspondingly connected to two ends of one LED lamp in parallel; the main controller controls the on-off state of each switch circuit;
if the main controller controls a certain switch circuit to be switched on, the LED lamp corresponding to the switch circuit is in short circuit; and if the main controller controls the switch circuit to be disconnected, the LED lamp corresponding to the switch circuit is not short-circuited.
2. The control circuit of claim 1, wherein the switch circuit is a MOS transistor Q1, the source and drain of the MOS transistor Q1 are respectively connected to two ends of the LED lamp, the gate of the MOS transistor Q1 is connected to the main controller, and the main controller controls the on/off of the MOS transistor Q1; or
The switching circuit is a triode Q2, a collector and an emitter of the triode Q2 are respectively connected with two ends of the LED lamp, a base of the triode Q2 is connected with the main controller, and the main controller controls the on-off of the triode Q2; or
The LED lamp is characterized in that the switch circuit is a silicon controlled rectifier T, the anode and the cathode of the silicon controlled rectifier T are respectively connected with the two ends of the LED lamp, the control electrode of the silicon controlled rectifier T is connected with the main controller, and the main controller controls the on-off of the silicon controlled rectifier T.
3. The control circuit for independently controlling individual LEDs in a series LED light group as recited in claim 1, further comprising a plurality of zener diodes Z, one for each LED light; each voltage-stabilizing tube Z is correspondingly connected to two ends of one LED lamp in parallel, the anode of each voltage-stabilizing tube Z is connected with the cathode of the corresponding LED lamp, and the cathode of each voltage-stabilizing tube Z is connected with the anode of the corresponding LED lamp; or
The control circuit further comprises a plurality of resistors R1, one resistor R1 corresponding to each LED lamp; the resistor R1 is correspondingly connected in parallel at two ends of one LED lamp.
4. The control circuit of claim 1, further comprising a plurality of switch control circuits, one for each switch control circuit, the switch control circuits being connected in one-to-one correspondence with the switch circuits; the main controller is respectively connected with each switch control circuit, and the on-off of the corresponding switch circuit is controlled by the switch control circuit.
5. The control circuit of claim 4, wherein the switch control circuit comprises: the circuit comprises a triode Q3, a triode Q4, a triode Q5, a resistor R2, a resistor R3, a resistor R4 and a capacitor C;
the base electrode of the triode Q5 is connected with the main controller, the emitter electrode of the triode Q5 is grounded through the resistor R4, the emitter electrode of the triode Q5 is grounded through the capacitor C, and the collector electrode of the triode Q5 is respectively connected with the base electrode of the triode Q3 and the base electrode of the triode Q4 through the resistor R3; the collector of the triode Q4 is grounded, and the emitter of the triode Q4 is respectively connected with the emitter of the triode Q3 and the switching circuit; the base of the transistor Q3 is connected with the switch circuit through the resistor R2, and the collector of the transistor Q3 is connected with the switch circuit.
6. The control circuit of claim 5, wherein the lighting process of the LED lamps is as follows: the power supply supplies power to the series LED lamp bank, the triode Q5 receives a high level signal sent by the main controller, the triode Q5 is conducted, the triode Q4 is conducted, the triode Q3 is not conducted, the switch circuit is disconnected, and the LED lamp corresponding to the switch circuit is lightened;
the turn-off process of the LED lamp is as follows: the power supply supplies power to the series LED lamp bank, the triode Q5 receives a low level signal sent by the main controller, the triode Q5 is not conducted, the triode Q4 is not conducted, the triode Q3 is conducted, the switch circuit is switched on, and the LED lamp corresponding to the switch circuit is switched off by short circuit.
7. The control circuit capable of independently controlling a single LED in a series LED lamp set according to claim 1, wherein the main controller is connected to two ends of each LED lamp respectively, and acquires the working state of the corresponding LED lamp by collecting voltage signals at the two ends of the LED lamp.
8. The circuit of claim 1, wherein the main controller controls the on/off frequency and/or on/off time of the switch circuit to control the brightness of the LED lamp.
9. The control circuit of claim 1, wherein the LED lamp comprises at least two LEDs connected in parallel and/or in series.
10. The control circuit capable of independently controlling a single LED in a series LED lamp set according to claim 1, wherein the power supply comprises a power supply controller and a constant current adjustable controller, and the main controller is respectively connected with the power supply controller and the constant current adjustable controller; and two ends of the series LED lamp set are respectively connected with the power supply controller and the constant-current adjustable controller, so that power supply adjustment of the series LED lamp set is realized.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910730529.1A CN112437513A (en) | 2019-08-08 | 2019-08-08 | Control circuit capable of independently controlling single LED in series LED lamp bank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910730529.1A CN112437513A (en) | 2019-08-08 | 2019-08-08 | Control circuit capable of independently controlling single LED in series LED lamp bank |
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| CN112437513A true CN112437513A (en) | 2021-03-02 |
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| CN201910730529.1A Pending CN112437513A (en) | 2019-08-08 | 2019-08-08 | Control circuit capable of independently controlling single LED in series LED lamp bank |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979092Y (en) * | 2006-12-07 | 2007-11-21 | 姚荣湘 | Tandem LED lamp set light-emitting device |
| CN107493635A (en) * | 2017-09-22 | 2017-12-19 | 浙江晶日照明科技有限公司 | A kind of more pixel drive systems of LED |
| CN207491268U (en) * | 2017-12-01 | 2018-06-12 | 中山市华研电子科技有限公司 | A kind of infrared stepless dimming Discrete control LED lamp |
-
2019
- 2019-08-08 CN CN201910730529.1A patent/CN112437513A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979092Y (en) * | 2006-12-07 | 2007-11-21 | 姚荣湘 | Tandem LED lamp set light-emitting device |
| CN107493635A (en) * | 2017-09-22 | 2017-12-19 | 浙江晶日照明科技有限公司 | A kind of more pixel drive systems of LED |
| CN207491268U (en) * | 2017-12-01 | 2018-06-12 | 中山市华研电子科技有限公司 | A kind of infrared stepless dimming Discrete control LED lamp |
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Application publication date: 20210302 |