CN207610005U - Light-adjustable LED lamp and lighting system - Google Patents
Light-adjustable LED lamp and lighting system Download PDFInfo
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- CN207610005U CN207610005U CN201721525912.6U CN201721525912U CN207610005U CN 207610005 U CN207610005 U CN 207610005U CN 201721525912 U CN201721525912 U CN 201721525912U CN 207610005 U CN207610005 U CN 207610005U
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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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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The utility model provides a kind of light-adjustable LED lamp and lighting system.The light-adjustable LED lamp includes：Lamp cap, bottom are provided with metal fixture；Structural member is arranged above the lamp cap, is electrically connected with the lamp cap；Tunable optical DOB modules, setting are electrically connected on the structural member, and with the structural member；Insure resistance, first end is electrically connected with the tunable optical DOB modules, and second end is electrically connected by the structural member with the metal fixture of the lamp cap bottom；Lampshade is cavity structure, is arranged above the structural member.Above-mentioned light-adjustable LED lamp and lighting system can realize that the peripheral components for controlling chip by seldom IC just can reach the switching of a variety of grade illumination, keep the structure of light-adjustable LED lamp and assembly simple, reduce cost by the way that tunable optical DOB modules are arranged.
Description
Technical field
The utility model belongs to light-adjustable LED lamp technical field, is to be related to light-adjustable LED lamp and illumination more specifically
System.
Background technology
LED (Light Emitting Diode, light emitting diode) lamp is the main of current semiconductor LED illumination universalness
Product, LED light are generally used in the environment such as factory, school, office space and family.With people's focus ring border and light quality
It is required that increasingly being promoted, also with the rise of intelligent lighting, realize that adjusting a variety of the bright of grade secretly has become not on same lamps and lanterns
The application trend come.
Currently, traditional fluorescent lamp and common LED fluorescent lamp have the following disadvantages when in face of intelligent lighting trend：It is adjustable
The circuit drives of light are detached with light source, and the peripheral components driven are relatively more, relative complex, of high cost.
Utility model content
The purpose of this utility model is to provide a kind of light-adjustable LED lamp and lighting systems, it is intended to solve the prior art
The circuit drives of tunable optical are detached with light source, and the problem that the peripheral components driven are relatively more, relative complex, of high cost.
To achieve the above object, the utility model first aspect provides a kind of light-adjustable LED lamp, including：
Lamp cap, bottom are provided with metal fixture；
Structural member is arranged above the lamp cap, is electrically connected with the lamp cap；
Tunable optical DOB (Driver On Board, driving plate) module, be arranged on the structural member, and with the structure
Part is electrically connected；
Insure resistance, first end is electrically connected with the tunable optical DOB modules, and second end passes through the structural member and the lamp
The metal fixture electrical connection of head bottom；
Lampshade is cavity structure, is arranged above the structural member.
Optionally, the structural member is horn shape, and for being connect with the lampshade, opening is smaller for the larger one end that is open
One end for being electrically connected with the top of the lamp cap；
The medial surface of the structural member is open larger one end equipped with card slot；
The tunable optical DOB modules setting is electrically connected in the card slot, and with the medial surface.
Optionally, the tunable optical DOB modules include LED light emitting diodes group, MCPCB (Metal CorePrinted
Circuit Board, metal base printed circuit board) plate and dimming control circuit；
The LED light emitting diodes group is arranged on the MCPCB plates, is electrically connected with the MCPCB plates, also with it is described can
Adjusting control circuit is electrically connected；
The dimming control circuit setting is electrically connected on the MCPCB plates, and with the MCPCB plates；
The first end of the insurance resistance is electrically connected with the MCPCB plates.
Optionally, the LED light emitting diodes group includes at least one LED light emitting diodes；
The tunable optical DOB modules further include：Holder is arranged on the MCPCB plates；At least one LED shines
Diode arrangement is arranged in the frame bottom.
Optionally, the LED light emitting diodes are horizontal structure LED chip；
At least one LED light emitting diodes series connection.
Optionally, the dimming control circuit includes：First diode, the second diode, third diode, the four or two
Pole pipe, first resistor, second resistance and IC (Integrated Circuit, integrated circuit) control chip；
The anode of first diode and second diode connect with external power supply, first diode with
The power input pin that the cathode of second diode controls chip with the IC connect, also with the LED luminous two
Pole pipe group anode connects；
The cathode of the third diode is connect with the anode of first diode, and the anode of the third diode connects
Ground；The anode of the cathode of 4th diode and second diode connect, the 4th diode it is positive with it is described
The anode connection of third diode；
The first effect pin that the first end of the first resistor controls chip with the IC is connect, the first resistor
Second end is connect with the first end of the second resistance；The first end of the second resistance also controls the second of chip with the IC
Pin connection is acted on, the second end of the second resistance is connect with the anode of the third diode；
The first controlling switch and the second controlling switch of the IC controls chip are negative with the LED light emitting diodes group
Pole connects, the GND pin ground connection of the IC controls chip.
Optionally, the dimming control circuit further includes：3rd resistor and the first capacitance；
The first end of the 3rd resistor is connect with the external power supply, the second end of the 3rd resistor and described first
The anode connection of diode；
The power control pin that the anode of first capacitance controls chip with the IC is connect, and first capacitance is born
Pole is connect with the anode of the third diode.
Optionally, the dimming control circuit further includes：4th resistance, the third of first end and IC control chips
Pin connection is acted on, second end is connect with the anode of the third diode.
Optionally, the tunable optical DOB modules further include：Terminal 305 is placed on the MCPCB plates, and with it is described
MCPCB plates are electrically connected；
The first end of the insurance resistance is electrically connected by the terminal with the MCPCB plates.
The utility model second aspect provides a kind of lighting system, including any of the above-described kind of light-adjustable LED lamp.
The advantageous effect of light-adjustable LED lamp provided by the utility model and lighting system is：Compared with prior art, originally
Utility model includes lamp cap, and bottom is provided with metal fixture；Structural member is arranged above the lamp cap, with the lamp cap
Electrical connection；Tunable optical DOB modules, setting are electrically connected on the structural member, and with the structural member；Insure resistance, first end
It is electrically connected with the tunable optical DOB modules, second end passes through the metal fixture of the structural member and lamp cap bottom electricity
Connection；Lampshade is cavity structure, is arranged above the structural member, i.e., by the way that tunable optical DOB modules are arranged, realizes and pass through
The peripheral components of seldom IC control chips just can reach the switching of a variety of grade illumination, make the structure and dress of light-adjustable LED lamp
It is simpler with processing, it reduces the production cost.
Description of the drawings
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this practicality is new
Some embodiments of type for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram for the light-adjustable LED lamp that the utility model embodiment provides；
Fig. 2 is the physical circuit schematic diagram for the tunable optical DOB modules that the utility model embodiment provides；
Fig. 3 is the structural schematic diagram of holder and LED light emitting diode groups that the utility model embodiment provides；
Fig. 4 is that the dimming control circuit that the utility model embodiment provides is connect with the circuit of LED light emitting diode groups
Schematic diagram.
Specific implementation mode
In order to make technical problem to be solved in the utility model, technical solution and advantageous effect be more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
Embodiment one
Referring to Fig. 1, the utility model embodiment provide a kind of light-adjustable LED lamp, including lamp cap 100, structural member 200,
Tunable optical DOB modules 300, insurance resistance 400 and lampshade 500.
The bottom of lamp cap 100 is provided with metal fixture.
Structural member 200 is arranged above lamp cap 100, is electrically connected with lamp cap 100.
The setting of tunable optical DOB modules 300 is electrically connected on structural member 200, and with structural member 200.
The first end of insurance resistance 400 is electrically connected with tunable optical DOB modules 300, and the second end of insurance resistance 400 passes through knot
Component 200 is electrically connected with the metal fixture of 100 bottom of lamp cap.
Lampshade 500 is cavity structure, is arranged above structural member 200.
Above-mentioned light-adjustable LED lamp can be realized by the way that tunable optical DOB modules 300 are arranged and control chip by seldom IC
Peripheral components just can reach the switchings of a variety of grade illumination, keep the structure of light-adjustable LED lamp and assembly simple, it is cost-effective.
Further, in one embodiment, 100 top of lamp cap is closely connect with 200 bottom of structural member, 100 bottom of lamp cap
Equipped with metal fixture, for connecting insurance resistance 400.Optionally, the metal fixture of 100 bottom of lamp cap can be with
It is metal rivet, can also be other metal fixtures for realizing correlation function, for example, metal screws, metallic screw and gold
Belong to bolt etc..
Further, in one embodiment, structural member 200 is horn shape, and the larger one end that is open is used for and lampshade 500
Connection, the smaller one end of opening with the top of lamp cap 100 for being electrically connected.
The medial surface of structural member 200 is open larger one end equipped with card slot；Tunable optical DOB modules 300 are arranged in the card
In slot, and it is electrically connected with the medial surface of structural member 200.
The material of the lateral surface of structural member 200 is isolation material, such as plastic material etc..The medial surface of structural member 200 is
Metal material plays conductive effect.When lamp cap 100 is connect with external power supply, voltage is transferred to structural member 200, structure
Voltage is being transferred to tunable optical DOB modules 300 by part 200, and tunable optical DOB modules 300 are powered.Preferably, the present embodiment structure
The medial surface of part 200 is aluminium, but the present embodiment does not limit the medial surface metal material of structural member 200.
Lampshade 500 is closely connect with the lateral surface top of structural member 200.
Further, referring to Fig. 2, tunable optical DOB modules 300 include LED light emitting diodes group 301,302 and of MCPCB plates
Dimming control circuit 303.
LED light emitting diodes group 301 is arranged on MCPCB plates 302, is electrically connected with MCPCB plates 302, and also and adjusting optical control
Circuit 303 processed is electrically connected.
The setting of dimming control circuit 303 is electrically connected on MCPCB plates 302, and with MCPCB plates 302.
The first end of insurance resistance 400 is electrically connected with MCPCB plates 302, and the second end of insurance resistance 400 passes through structural member
200 are electrically connected with the metal fixture of 100 bottom of lamp cap.
Optionally, LED light emitting diodes group 301 includes at least one LED light emitting diodes.
Further, referring to Fig. 3, in one embodiment, tunable optical DOB modules 300 further include：Holder 304, setting exist
On MCPCB plates 302.Optionally, holder 304 can be fixed on MCPCB plates 302 by crystal-bonding adhesive, can also be filled by fixed
It sets and is fixed on MCPCB plates 302, the present embodiment does not limit the fixed form that holder 304 is fixed on MCPCB plates 302.
At least one LED light-emitting diode arrangements are arranged in 304 bottom of holder.Preferably, at least one LED
Light emitting diode is evenly spaced in 304 bottom of holder, and holder 304 can make the heat dissipation of the LED light emitting diodes evenly,
LED light emitting diodes generate heat can be evenly slave holder 304 pass, extend the longevity of LED light emitting diodes
Life, stable light output is provided for lamp body.
Optionally, the LED light emitting diodes are horizontal structure LED chip.At least one LED light emitting diodes string
Connection.The present embodiment does not limit the LED light emitting diodes number that LED light emitting diodes group 301 includes.
Further, referring to Fig. 4, in one embodiment, dimming control circuit 303 includes：First diode, the two or two
Pole pipe, third diode, the 4th diode, first resistor Rcs1, second resistance Rcs2 and IC control chip.One or two pole
Pipe, second diode, the third diode and the 4th diode form electric current bridge, for controlling LED luminous two
301 electric current of pole pipe group inputs.
The anode of first diode and second diode connect with external power supply, first diode with
The cathode of second diode with the IC control chip power input pin VIN connect, also with LED light-emitting diodes
The 301 anode connection of pipe group.
The cathode of the third diode is connect with the anode of first diode, and the anode of the third diode connects
Ground；The anode of the cathode of 4th diode and second diode connect, the 4th diode it is positive with it is described
The anode connection of third diode.
The first effect pin CS1 that the first end of the first resistor Rcs1 and the IC control chip is connect, and described the
The second end of one resistance Rcs1 is connect with the first end of the second resistance Rcs2.
The second effect pin CS2 that the first end of the second resistance Rcs2 also controls chip with the IC is connect, described
The second end of second resistance Rcs2 is connect with the anode of the third diode.
The the first controlling switch D1 and the second controlling switch D2 of IC control chip with LED light emitting diodes group 301
Cathode connection, the GND pin ground connection of IC control chip.
Further, the operation principle of dimming control circuit 303 is as follows：
When first time opening power switch, the second controlling switch D2 of the IC controls chip is opened, first control
Pin D1 shutdowns processed, the IC controls chip input the electric current into LED light emitting diodes group 301, chip are controlled by the IC
Second effect pin CS2 connections the second resistance Rcs2 resistance value determine, it is preferred that from the IC control chip input into
The electric current of LED light emitting diodes group 301 is I1=V1/Rcs2；
When opening power switch second, the first controlling switch D1 and the second controlling switch D2 of the IC controls chip
It opens simultaneously, IC control chip inputs resistance value of the electric current into LED light emitting diodes group 301 by the second resistance Rcs2
Determine, it is preferred that from the IC control chip input into LED light emitting diodes group 301 electric current be I2=V2/ Rcs2, the V2
Voltage value be the V1Voltage value half；
When third time opens power switch, the second controlling switch D2 shutdowns, the first controlling switch D1 is opened,
IC control chip inputs the electric current into LED light emitting diodes group 301 by the resistance value of the first resistor Rcs1 and described the
The resistance value of two resistance Rcs2 determines that it is I to enter the electric current of LED light emitting diodes group 301 from IC control chips3=V2/
(Rcs1+Rcs2)。
According to the difference of the resistance value of the first resistor Rcs1 and the resistance value of the second resistance Rcs2, the grade of light modulation is not
Together.Preferably, the light modulation ratio of the present embodiment be 100%, 50%, X%, wherein X%=Rcs2/ (Rcs1+Rcs2).I.e. originally
Embodiment changes in dimming control circuit 303 by being turned on and off power switch successively and is input to LED light-emitting diodes successively
The size of the electric current of pipe group 301, to change the bright dark of 301 light of LED light emitting diodes group, the light modulation ratio can pass through
The resistance value size of the outer connecting resistance of effect pin of the IC controls chip is adjusted, you can be flexibly arranged according to application demand
Different light modulation ratios.
Optionally, the IC controls chip also has the function of overheat protector, and the control power supply unit of chip is controlled in the IC
When the overheat of position, by detecting the variation of diode drop in dimming control circuit 303, change the IC controls chip interior ratio
Compared with the reference voltage of device setting, output current is gradually reduced to control output power and temperature, the control power supply is allowed to be maintained at
Certain temperature, it is ensured that the reliability of dimming control circuit 303.It should be understood that the IC control chips in the present embodiment can be with
It is other devices, such as microcircuit, microchip etc. that correlation function can be achieved.
Optionally, the light-adjustable LED lamp can there are two types of application scenarios, when external voltage is 200V-240V, LED
The overall presure drop of light emitting diode group 301 is preferentially arranged in 220V-270V, when external voltage is 100V-120V, LED luminous two
The overall presure drop of pole pipe group 301 is preferentially set as 110V-150V, and the overall presure drop of LED light emitting diodes group 301 can be shone by LED
The number of series LED light emitting diode controls in diode group 301.
Optionally, dimming control circuit 303 further includes：3rd resistor RF and the first capacitance C1.
The first end of the 3rd resistor RF is connect with the external power supply, the second end of the 3rd resistor RF with it is described
The anode connection of first diode.The 3rd resistor RF prevents the external power supply for protecting dimming control circuit 303
Input voltage is excessive, damages dimming control circuit 303.
The power control pin VCC that the anode of the first capacitance C1 controls chip with the IC is connect, first electricity
The cathode for holding C1 is connect with the anode of the third diode.The first capacitance C1 is used to store the electricity of the IC controls chip
The voltage of source controlling switch VCC outputs.
Optionally, dimming control circuit 303 further includes：4th resistance R1.
The third effect pin SEL that the first end of the 4th resistance R1 controls chip with the IC is connect, and the described 4th
The second end of resistance R1 is connect with the anode of the third diode.Optionally, according to user demand dimming control circuit 303
The variation grades of 301 lamplight brightness of LED light emitting diodes group can be increased, even if light modulation increasing proportion, can apply institute at this time
The third effect pin for stating IC control chips connects outer connecting resistance, i.e., the described 4th resistance R1.The 4th resistance R1, described
The one resistance Rcs1 and second resistance Rcs2 codetermines the light modulation ratio.
Optionally, tunable optical DOB modules 300 further include terminal 305.Terminal 305 is placed on MCPCB plates 302, and with
MCPCB plates 302 are electrically connected.The edges of boards of MCPCB plates 302 are equipped with external power input, the external power input and terminal
305 connections, also connect with the external power input of dimming control circuit 303, and the first end of insurance resistance 400 passes through terminal
305 are electrically connected with MCPCB plates 302, the circuit for protecting tunable optical DOB modules 300.
The bottom of above-mentioned light-adjustable LED lamp, lamp cap 100 is provided with metal fixture；Structural member 200 is arranged in lamp cap
100 tops, are electrically connected with lamp cap 100；The setting of tunable optical DOB modules 300 is electrically connected on structural member 200, and with structural member 200
It connects；The first end of insurance resistance 400 is electrically connected with tunable optical DOB modules 300, and second end passes through structural member 200 and 100 bottom of lamp cap
The metal fixture in portion is electrically connected；Lampshade 500 is cavity structure, is arranged above structural member 200, i.e., by the way that tunable optical is arranged
DOB modules 300 realize the switching that just can reach a variety of grade illumination by the peripheral components of seldom IC control chips, make
The structure of LED light and assembly processing are simpler, reduce the production cost.
Embodiment two
A kind of light-adjustable LED lamp in lighting system, including any of the above-described a embodiment has above-mentioned light-adjustable LED lamp
Possessed advantageous effect.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. a kind of light-adjustable LED lamp, which is characterized in that including：
Lamp cap, bottom are provided with metal fixture；
Structural member is arranged above the lamp cap, is electrically connected with the lamp cap；
Tunable optical DOB modules, setting are electrically connected on the structural member, and with the structural member；
Insure resistance, first end is electrically connected with the tunable optical DOB modules, and second end passes through the structural member and the lamp cap bottom
The metal fixture in portion is electrically connected；
Lampshade is cavity structure, is arranged above the structural member.
2. light-adjustable LED lamp as described in claim 1, which is characterized in that the structural member is horn shape, is open larger
One end with the lampshade for connecting, and the smaller one end of opening with the top of the lamp cap for being electrically connected；
The medial surface of the structural member is open larger one end equipped with card slot；
The tunable optical DOB modules setting is electrically connected in the card slot, and with the medial surface.
3. light-adjustable LED lamp as described in claim 1, which is characterized in that the tunable optical DOB modules include LED luminous two
Pole pipe group, MCPCB plates and dimming control circuit；
The LED light emitting diodes group is arranged on the MCPCB plates, is electrically connected with the MCPCB plates, also with the tunable optical
Control circuit is electrically connected；
The dimming control circuit setting is electrically connected on the MCPCB plates, and with the MCPCB plates；
The first end of the insurance resistance is electrically connected with the MCPCB plates.
4. light-adjustable LED lamp as claimed in claim 3, which is characterized in that the LED light emitting diodes group includes at least one
LED light emitting diodes；
The tunable optical DOB modules further include：Holder is arranged on the MCPCB plates；At least one LED light-emitting diodes
Pipe arrangement is arranged in the frame bottom.
5. light-adjustable LED lamp as claimed in claim 4, which is characterized in that the LED light emitting diodes are horizontal structure LED
Chip；
At least one LED light emitting diodes series connection.
6. light-adjustable LED lamp as claimed in claim 3, which is characterized in that the dimming control circuit includes：One or two pole
Pipe, the second diode, third diode, the 4th diode, first resistor, second resistance and IC control chip；
The anode of first diode and second diode is connect with external power supply, first diode and described
The cathode of second diode with the IC control chip power input pin connect, also with the LED light emitting diodes
Group anode connection；
The cathode of the third diode is connect with the anode of first diode, the plus earth of the third diode；
The cathode of 4th diode is connect with the anode of second diode, anode and the third of the 4th diode
The anode connection of diode；
The first effect pin that the first end of the first resistor controls chip with the IC is connect, and the second of the first resistor
End is connect with the first end of the second resistance；The first end of the second resistance also controls the second effect of chip with the IC
Pin connects, and the second end of the second resistance is connect with the anode of the third diode；
The first controlling switch and the second controlling switch of the IC controls chip connect with the cathode of the LED light emitting diodes group
It connects, the GND pin ground connection of the IC controls chip.
7. light-adjustable LED lamp as claimed in claim 6, which is characterized in that the dimming control circuit further includes：Third electricity
Resistance and the first capacitance；
The first end of the 3rd resistor is connect with the external power supply, the second end of the 3rd resistor and the one or two pole
The anode connection of pipe；
First capacitance anode with the IC control chip power control pin connect, the cathode of first capacitance and
The anode connection of the third diode.
8. light-adjustable LED lamp as claimed in claim 6, which is characterized in that the dimming control circuit further includes：4th electricity
Resistance, the third effect pin that first end controls chip with the IC are connect, and second end is connect with the anode of the third diode.
9. light-adjustable LED lamp as claimed in claim 3, which is characterized in that the tunable optical DOB modules further include：Terminal is set
In on the MCPCB plates, and it is electrically connected with the MCPCB plates；
The first end of the insurance resistance is electrically connected by the terminal with the MCPCB plates.
10. a kind of lighting system, which is characterized in that including claim 1 to 9 any one of them light-adjustable LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721525912.6U CN207610005U (en) | 2017-11-15 | 2017-11-15 | Light-adjustable LED lamp and lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721525912.6U CN207610005U (en) | 2017-11-15 | 2017-11-15 | Light-adjustable LED lamp and lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207610005U true CN207610005U (en) | 2018-07-13 |
Family
ID=62794401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721525912.6U Active CN207610005U (en) | 2017-11-15 | 2017-11-15 | Light-adjustable LED lamp and lighting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207610005U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826051A (en) * | 2018-08-01 | 2018-11-16 | 上海顿格电子贸易有限公司 | A kind of LED light of sectional dimming |
-
2017
- 2017-11-15 CN CN201721525912.6U patent/CN207610005U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826051A (en) * | 2018-08-01 | 2018-11-16 | 上海顿格电子贸易有限公司 | A kind of LED light of sectional dimming |
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