CN110621101A - Hybrid dimming driving circuit - Google Patents
Hybrid dimming driving circuit Download PDFInfo
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- CN110621101A CN110621101A CN201910852989.1A CN201910852989A CN110621101A CN 110621101 A CN110621101 A CN 110621101A CN 201910852989 A CN201910852989 A CN 201910852989A CN 110621101 A CN110621101 A CN 110621101A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The invention discloses a hybrid dimming driving circuit, which comprises a silicon controlled dimmer, a silicon controlled dimming constant current circuit, a wireless control circuit and a detection circuit, wherein the silicon controlled dimming constant current circuit is composed of a first rectifying circuit, a bleeder circuit and a constant current circuit which are sequentially connected; the LED lamp dimming control system has the advantages that even if the wireless communication equipment firstly dims the LED lamp through the wireless control module, the LED lamp can still be regulated in the whole brightness area through the silicon controlled rectifier dimmer.
Description
Technical Field
The invention relates to a driving circuit of an LED lighting product, in particular to a hybrid dimming driving circuit.
Background
Conventionally, most households in the united states use a thyristor dimmer to perform dimming, and the thyristor dimmer is manually adjusted to adjust a voltage phase angle to perform on-state dimming. In recent years, with the rapid development of wireless communication technology and internet technology, the wireless communication technology and the internet technology are gradually applied to LED lighting products and wireless switching, dimming and color mixing are performed on the LED lighting products. Due to the fact that the wireless communication technology is added, the LED lamp can be dimmed by adopting the controlled silicon and can also be dimmed by adopting the wireless communication equipment. When the two can be adjusted independently or mutually, and when the two are mutually adjusted, if the wireless communication equipment firstly adjusts the light of the LED lamp through the wireless control module and then continuously adjusts the light through the silicon controlled rectifier dimmer, the silicon controlled rectifier dimmer can only adjust the rest light, but cannot adjust the whole brightness region.
Disclosure of Invention
The invention aims to provide a hybrid dimming driving circuit, which can adjust the whole brightness region of an LED lamp through a silicon controlled dimmer even if wireless communication equipment adjusts the LED lamp through a wireless control module firstly.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a mix drive circuit that adjusts luminance, includes silicon controlled rectifier dimmer, silicon controlled rectifier constant current circuit and wireless control circuit, silicon controlled rectifier constant current circuit that adjusts luminance by the first rectifier circuit, bleeder circuit, the constant current circuit that connect gradually constitute, wireless control circuit constitute by the second rectifier circuit, constant voltage power supply circuit, the wireless control module that connect gradually, the commercial power pass through silicon controlled rectifier dimmer after all the way with the input of first rectifier circuit connect, another way with the input of second rectifier circuit connect, the output of constant current circuit be connected with the LED load, the output of wireless control module with constant current circuit's the end of adjusting luminance connect in order to carry out wireless remote dimming to the LED load, its characterized in that: the constant current circuit adopts a simulation dimming control mode to dim the LED load, the hybrid dimming drive circuit further comprises a detection circuit for detecting the phase change of the silicon controlled dimmer or the output voltage change of the silicon controlled dimmer, and when the detection circuit outputs a phase change signal or a voltage change signal to the wireless control module, the wireless control module controls the brightness of the LED load to be reset to the non-dimming or non-dimming color-mixing control state of the wireless control module through the constant current circuit.
The input end of the detection circuit is connected with the output end of the second rectification circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
The detection circuit is composed of a sixth resistor, a seventh resistor, a third capacitor and a voltage stabilizing diode, wherein one end of the sixth resistor is connected with one output end of the second rectifying circuit, the other end of the sixth resistor is respectively connected with one end of the seventh resistor, one end of the third capacitor, the cathode of the voltage stabilizing diode and the input end of the wireless control module, the other end of the seventh resistor is respectively connected with the other end of the third capacitor and the anode of the voltage stabilizing diode, and the common connecting end of the seventh resistor is connected with the other output end of the second rectifying circuit.
The input end of the detection circuit is connected with the input end of the second rectification circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
The detection circuit is composed of a sixth resistor, a seventh resistor, a third capacitor and a voltage stabilizing diode, wherein one end of the sixth resistor is connected with one input end of the second rectifying circuit, the other end of the sixth resistor is respectively connected with one end of the seventh resistor, one end of the third capacitor, the cathode of the voltage stabilizing diode and the input end of the wireless control module, the other end of the seventh resistor is respectively connected with the other end of the third capacitor and the anode of the voltage stabilizing diode, and the common connecting end of the seventh resistor is connected with the other input end of the second rectifying circuit.
A signal isolation conversion circuit is additionally arranged between the output end of the wireless control module and the dimming end of the constant current circuit, so that the wireless control module and the constant current circuit are grounded together before signal isolation, and the wireless control module and the constant current circuit are grounded together after signal isolation. Because the wireless control module and the constant current circuit are not in common, the wireless control module and the constant current circuit are in common by introducing the signal isolation conversion circuit before and after signal isolation.
The signal isolation conversion circuit is an optical coupling circuit.
The bleeder circuit comprises a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor and a control chip with the model of JW1695, wherein one end of the first resistor is connected with one output end of the first rectifying circuit, the other end of the first resistor is respectively connected with one end of the second resistor and one end of the first capacitor, a common connecting end of the first resistor is connected with a pin 3 of the control chip, the other end of the second resistor is connected with the other end of the first capacitor, a common connecting end of the second resistor is connected with the other output end of the first rectifying circuit, a pin 1 of the control chip is connected with one output end of the first rectifying circuit through the third resistor, a pin 2 of the control chip is connected with the other output end of the first rectifying circuit through the second capacitor, the 4 th pin of the control chip is connected with the constant current circuit, and the 5 th pin to the 8 th pin of the control chip are connected with the other output end of the first rectifying circuit. When the mains supply is rectified by the first rectifying circuit and then is input into the control chip through the first resistor, if the silicon controlled rectifier dimmer is used for dimming, the voltage change rate output into the control chip is large, so that the control chip is conducted to work, and the maintenance current is provided for the silicon controlled rectifier dimmer; if the silicon controlled dimmer does not adjust the light, the control chip is disconnected and does not work; the use of a bleeder (Bleed) circuit may improve power efficiency when the thyristor dimmer is not connected.
The constant current circuit comprises a constant current control chip with the model number of BP5788DJ, the wireless control module is of the model number of TYWE3L, and the constant voltage power supply circuit comprises a constant voltage chip with the model number of BP 8519C.
The input end of the detection circuit is connected with the output end of the first rectifying circuit, and the output end of the detection circuit is connected with the input end of the wireless control module; or the input end of the detection circuit is connected with the output end of the first rectifying circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
Compared with the prior art, the invention has the advantages that:
1) when the silicon controlled dimmer dims light, the detection circuit detects that the phase of the silicon controlled dimmer changes or the output voltage changes, the phase change signal or the voltage change signal is input into the wireless control module, the wireless control module resets the brightness of the LED load to the non-dimming or non-dimming and color-mixing control state of the wireless control module, and the silicon controlled dimmer dims light of the LED load in the whole brightness area.
2) The mixed dimming driving circuit can directly use the silicon controlled dimmer to regulate the whole brightness area of the LED load; after the brightness of the LED load is adjusted by using wireless communication equipment (such as APP), the silicon controlled rectifier dimmer is not influenced to adjust the whole brightness region of the LED load; after the thyristor dimmer is used for dimming the LED load, the wireless communication equipment can only be used for adjusting the residual dimming brightness.
3) The constant current circuit in the hybrid dimming driving circuit adopts an analog dimming control mode to dim the LED load instead of a PWM chopping dimming mode, and the phenomenon of lamp flicker can occur in the dimming process by adopting the PWM chopping dimming mode.
4) Because the thyristor dimmer needs to provide a holding current during dimming, a bleeder circuit is used to provide a holding circuit for the thyristor dimmer.
5) The first rectifying circuit is arranged to enable the mains supply to supply power for the constant current circuit, the second rectifying circuit is arranged to enable the mains supply to supply power for the wireless control module, the wireless control module and the mains supply do not interfere with each other, and the wireless control module can still be supplied with power through the second rectifying circuit when the silicon controlled rectifier dimmer is adjusted to the low end.
Drawings
Fig. 1 is a block diagram of a hybrid dimming driving circuit according to a first embodiment;
fig. 2 is a specific circuit diagram of a hybrid dimming driving circuit according to a first embodiment;
fig. 3 is a block diagram of a hybrid dimming driving circuit according to a second embodiment;
fig. 4 is a specific circuit diagram of a hybrid dimming driving circuit according to a second embodiment.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The first embodiment is as follows:
a hybrid dimming driving circuit proposed in this embodiment, as shown in fig. 1 and fig. 2, includes a silicon controlled dimmer 1, a silicon controlled dimming constant current circuit 2, a wireless control circuit 3, and a detection circuit 4, where the silicon controlled dimming constant current circuit 2 is composed of a first rectifier circuit BD1, a Bleed (Bleed) circuit 21, and a constant current circuit 22, which are connected in sequence, the wireless control circuit 3 is composed of a second rectifier circuit BD2, a constant voltage power supply circuit 31, and a wireless control module M1, after passing through the silicon controlled dimmer 1, one path of commercial power is connected to an input end of the first rectifier circuit BD1, the other path is connected to an input end of the second rectifier circuit BD2, an output end of the first rectifier circuit BD1 is connected to an input end of the first rectifier circuit 21, an output end of the Bleed circuit 21 is connected to an input end of the constant current circuit 22, an output end of the constant current circuit 22 is connected to an LED load 9, and the constant current, the output end of the second rectification circuit BD2 is connected to the input end of the constant voltage power supply circuit 31, the output end of the constant voltage power supply circuit 31 is connected to the power supply end of the wireless control module M1, the output end of the wireless control module M1 is connected to the dimming end of the constant current circuit 22 to perform wireless remote dimming on the LED load 9, the input end of the detection circuit 4 is connected to the output end of the second rectification circuit BD2, the output end of the detection circuit 4 is connected to the input end of the wireless control module M1, the detection circuit 4 is used for detecting the phase change of the thyristor dimmer 1 or the output voltage change of the thyristor dimmer 1, and when the detection circuit 4 outputs the phase change signal or the voltage change signal to the wireless control module M1, the wireless control module M1 controls the brightness of the LED load 9 to be reset to the non-dimming or non-dimming control state of the wireless control module M1.
In this embodiment, a signal isolation conversion circuit 5 is additionally provided between the output terminal of the wireless control module M1 and the dimming terminal of the constant current circuit 22, so that the wireless control module M1 before signal isolation is grounded together with the constant current circuit 22, and the wireless control module M1 after signal isolation is grounded together with the constant current circuit 22. Since the wireless control module M1 and the constant current circuit 22 are not in common, the signal isolation conversion circuit 5 is introduced to make the two circuits in common before and after signal isolation; the signal isolation conversion circuit 5 adopts an optical coupling circuit.
In this embodiment, the detection circuit 4 is composed of a sixth resistor R6, a seventh resistor R7, a third capacitor C3 and a zener diode ZD1, one end of the sixth resistor R6 is connected to one output end of the second rectification circuit BD2, the other end of the sixth resistor R6 is connected to one end of the seventh resistor R7, one end of the third capacitor C3, the cathode of the zener diode ZD1 and the input end of the wireless control module M1, the other end of the seventh resistor R7 is connected to the other end of the third capacitor C3 and the anode of the zener diode ZD1, and the common connection end thereof is connected to the other output end of the second rectification circuit BD 2.
In this embodiment, the bleeder circuit 21 includes a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, and a control chip U1 of JW1695 type, one end of the first resistor R1 is connected to one output terminal of the first rectifier circuit BD1, the other end of the first resistor R1 is connected to one end of the second resistor R2 and one end of the first capacitor C1, respectively, and a common connection terminal thereof is connected to the 3 rd pin of the control chip U1, the other end of the second resistor R2 is connected to the other end of the first capacitor C1, and a common connection terminal thereof is connected to the other output terminal of the first rectifier circuit BD1, the 1 st pin of the control chip U1 is connected to one output terminal of the first rectifier circuit BD1 through the third resistor R3, the 2 nd pin of the control chip U1 is connected to the other output terminal of the first rectifier circuit BD1 through the second capacitor C2, and the constant current circuit 1 of the control chip U1 is connected to the third pin 1, the 5 th pin to the 8 th pin of the control chip U1 are connected with the other output end of the first rectification circuit BD 1. When the mains supply is rectified by the first rectifying circuit BD1 and then is input into the control chip U1 through the first resistor R1, if the silicon controlled dimmer 1 is used for dimming, the voltage change rate output into the control chip U1 is large, the control chip U1 is conducted to work, and the maintaining current is provided for the silicon controlled dimmer 1; if the silicon controlled dimmer 1 does not dim, the control chip U1 is disconnected and does not work; the use of the bleed circuit 21 may improve the power efficiency when the triac dimmer 1 is not connected.
In the present embodiment, the first rectifier circuit BD1 and the second rectifier circuit BD2 both use a conventional rectifier stack, i.e., are composed of four diodes; the constant current circuit 22 comprises a constant current control chip U2 with the model number of BP5778DJ, a fourth resistor R4, a fifth resistor R5, a first diode D1, a first electrolytic capacitor CE1 and a second electrolytic capacitor CE2, wherein the 1 st pin of the constant current control chip U2 is connected with one output end of the signal isolation conversion circuit 5, the 2 nd pin of the constant current control chip U2 is grounded through a fourth resistor R4, the 3 rd pin of the constant current control chip U2 is connected with the other output end of the signal isolation conversion circuit 5, the 4 th pin of the constant current control chip U2 is grounded through a fifth resistor R5, the 5 th pin of the constant current control chip U2 is respectively connected with the cathode of one LED lamp bead LED-2 in the LED loads 9 and the cathode of the second electrolytic capacitor CE2, the 6 th pin of the constant current control chip U2 is respectively connected with the cathode of the other LED-1 in the LED loads 9 and the cathode of the first electrolytic capacitor CE1, and the first pin of the constant current control chip U2 is suspended, the 8 th pin of the constant current control chip U2, the anode of one LED lamp bead LED-2, the anode of the second electrolytic capacitor CE2, the anode of the other LED lamp bead LED-1 and the anode of the first electrolytic capacitor CE1 are all connected with the cathode of a first diode D1, the anode of the first diode D1 is connected with the common connecting end of a first resistor R1 and a third resistor R3, and the 9 th pin of the constant current control chip U2 is grounded; the constant voltage power supply circuit 31 comprises a constant voltage chip U3, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a fourth capacitor C4, a second diode D2, a third electrolytic capacitor CE3, a first inductor L1, a second inductor L2, a third diode D3, a fourth electrolytic capacitor CE4 and an eleventh resistor R11, wherein the anode of the second diode D2 is connected with one output end of the second rectification circuit BD2, the cathode of the second diode D2 is respectively connected with one end of the first inductor L2 and one end of the eighth resistor R2, the other end of the first inductor L2 is connected with the other end of the eighth resistor R2, the common connection end of the second diode D2 is respectively connected with the anode of the third electrolytic capacitor CE2 and the 1 st pin of the chip U2, the cathode of the third electrolytic capacitor CE2 is connected with the other output end of the second rectification circuit BD2, the floating terminal of the first constant voltage resistor U2 and the floating terminal of the ninth resistor R2, the other end of the ninth resistor R9 is connected with one end of a second inductor L2, the anode of a fourth electrolytic capacitor CE4 and one end of an eleventh resistor R11 respectively, the common connection end of the ninth resistor R9 is connected with the power supply end of the wireless control module M1, the other end of the second inductor L2 is connected with the other end of a tenth resistor R10, the cathode of a third diode D3, one end of a fourth capacitor C4 and the 5 th pin of a constant voltage chip U3 respectively, the other end of the fourth capacitor C4 is connected with the 4 th pin of the constant voltage chip U3, and the anode of the third diode D3, the cathode of the fourth electrolytic capacitor CE4 and the other end of the eleventh resistor R11 are all grounded; the model of the wireless control module M1 is TYWE3L, the 1 st pin of the wireless control module M1 is a power supply end, the 2 nd pin of the wireless control module M1 is grounded, the 3 rd pin of the wireless control module M1 is connected with one input end of the signal isolation conversion circuit 5, the 4 th pin of the wireless control module M1 is connected with the other input end of the signal isolation conversion circuit 5, the 5 th pin and the 6 th pin of the wireless control module M1 are suspended, and the 7 th pin of the wireless control module M1 is connected with the negative electrode of the zener diode ZD1 in the detection circuit 4 as an input end.
Example two:
as shown in fig. 3 and 4, the structure of the hybrid dimming driving circuit according to this embodiment is substantially the same as that of the first embodiment, except that: the input end of the detection circuit 4 is connected with the input end of the second rectification circuit BD2, the output end of the detection circuit 4 is connected with the input end of the wireless control module M1, the detection circuit 4 is composed of a sixth resistor R6, a seventh resistor R7, a third capacitor C3 and a zener diode ZD1, one end of the sixth resistor R6 is connected with one input end of the second rectification circuit BD2, the other end of the sixth resistor R6 is respectively connected with one end of a seventh resistor R7, one end of the third capacitor C3, the cathode of the zener diode ZD1 and the input end of the wireless control module M1, the other end of the seventh resistor R7 is respectively connected with the other end of the third capacitor C3 and the anode of the zener diode ZD1, and the common connection end of the seventh resistor R7 is connected with the other input end of the second rectification circuit BD 2.
In the actual design, the setting position of the detection circuit 4 can also be changed, for example, the input end of the detection circuit 4 is connected with the output end of the first rectification circuit BD1, and the output end of the detection circuit 4 is connected with the input end of the wireless control module M1; or the input end of the detection circuit 4 is connected with the input end of the first rectifying circuit BD1, and the output end of the detection circuit 4 is connected with the input end of the wireless control module M1.
Claims (10)
1. The utility model provides a mix drive circuit that adjusts luminance, includes silicon controlled rectifier dimmer, silicon controlled rectifier constant current circuit and wireless control circuit, silicon controlled rectifier constant current circuit that adjusts luminance by the first rectifier circuit, bleeder circuit, the constant current circuit that connect gradually constitute, wireless control circuit constitute by the second rectifier circuit, constant voltage power supply circuit, the wireless control module that connect gradually, the commercial power pass through silicon controlled rectifier dimmer after all the way with the input of first rectifier circuit connect, another way with the input of second rectifier circuit connect, the output of constant current circuit be connected with the LED load, the output of wireless control module with constant current circuit's the end of adjusting luminance connect in order to carry out wireless remote dimming to the LED load, its characterized in that: the constant current circuit adopts a simulation dimming control mode to dim the LED load, the hybrid dimming drive circuit further comprises a detection circuit for detecting the phase change of the silicon controlled dimmer or the output voltage change of the silicon controlled dimmer, and when the detection circuit outputs a phase change signal or a voltage change signal to the wireless control module, the wireless control module controls the brightness of the LED load to be reset to the non-dimming or non-dimming color-mixing control state of the wireless control module through the constant current circuit.
2. A hybrid dimming driving circuit according to claim 1, wherein: the input end of the detection circuit is connected with the output end of the second rectification circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
3. A hybrid dimming driving circuit according to claim 2, wherein: the detection circuit is composed of a sixth resistor, a seventh resistor, a third capacitor and a voltage stabilizing diode, wherein one end of the sixth resistor is connected with one output end of the second rectifying circuit, the other end of the sixth resistor is respectively connected with one end of the seventh resistor, one end of the third capacitor, the cathode of the voltage stabilizing diode and the input end of the wireless control module, the other end of the seventh resistor is respectively connected with the other end of the third capacitor and the anode of the voltage stabilizing diode, and the common connecting end of the seventh resistor is connected with the other output end of the second rectifying circuit.
4. A hybrid dimming driving circuit according to claim 1, wherein: the input end of the detection circuit is connected with the input end of the second rectification circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
5. The hybrid dimming driving circuit of claim 4, wherein: the detection circuit is composed of a sixth resistor, a seventh resistor, a third capacitor and a voltage stabilizing diode, wherein one end of the sixth resistor is connected with one input end of the second rectifying circuit, the other end of the sixth resistor is respectively connected with one end of the seventh resistor, one end of the third capacitor, the cathode of the voltage stabilizing diode and the input end of the wireless control module, the other end of the seventh resistor is respectively connected with the other end of the third capacitor and the anode of the voltage stabilizing diode, and the common connecting end of the seventh resistor is connected with the other input end of the second rectifying circuit.
6. A hybrid dimming driving circuit according to any one of claims 1 to 5, wherein: a signal isolation conversion circuit is additionally arranged between the output end of the wireless control module and the dimming end of the constant current circuit, so that the wireless control module and the constant current circuit are grounded together before signal isolation, and the wireless control module and the constant current circuit are grounded together after signal isolation.
7. A hybrid dimming driving circuit according to claim 6, wherein: the signal isolation conversion circuit is an optical coupling circuit.
8. A hybrid dimming driving circuit according to claim 6, wherein: the bleeder circuit comprises a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor and a control chip with the model of JW1695, wherein one end of the first resistor is connected with one output end of the first rectifying circuit, the other end of the first resistor is respectively connected with one end of the second resistor and one end of the first capacitor, a common connecting end of the first resistor is connected with a pin 3 of the control chip, the other end of the second resistor is connected with the other end of the first capacitor, a common connecting end of the second resistor is connected with the other output end of the first rectifying circuit, a pin 1 of the control chip is connected with one output end of the first rectifying circuit through the third resistor, a pin 2 of the control chip is connected with the other output end of the first rectifying circuit through the second capacitor, the 4 th pin of the control chip is connected with the constant current circuit, and the 5 th pin to the 8 th pin of the control chip are connected with the other output end of the first rectifying circuit.
9. A hybrid dimming driving circuit according to claim 1, wherein: the constant current circuit comprises a constant current control chip with the model number of BP5788DJ, the wireless control module is of the model number of TYWE3L, and the constant voltage power supply circuit comprises a constant voltage chip with the model number of BP 8519C.
10. A hybrid dimming driving circuit according to claim 1, wherein: the input end of the detection circuit is connected with the output end of the first rectifying circuit, and the output end of the detection circuit is connected with the input end of the wireless control module; or the input end of the detection circuit is connected with the output end of the first rectifying circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852989.1A CN110621101A (en) | 2019-09-10 | 2019-09-10 | Hybrid dimming driving circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852989.1A CN110621101A (en) | 2019-09-10 | 2019-09-10 | Hybrid dimming driving circuit |
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| CN110621101A true CN110621101A (en) | 2019-12-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021146984A1 (en) * | 2020-01-22 | 2021-07-29 | 浙江阳光美加照明有限公司 | Illumination apparatus and illumination control system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021146984A1 (en) * | 2020-01-22 | 2021-07-29 | 浙江阳光美加照明有限公司 | Illumination apparatus and illumination control system thereof |
| US11395383B2 (en) | 2020-01-22 | 2022-07-19 | Zhejiang Yankon Mega Lighting Co., Ltd. | Lighting device and lighting control system thereof |
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