CN209419928U - A kind of dimming device - Google Patents
A kind of dimming device Download PDFInfo
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- CN209419928U CN209419928U CN201821666293.7U CN201821666293U CN209419928U CN 209419928 U CN209419928 U CN 209419928U CN 201821666293 U CN201821666293 U CN 201821666293U CN 209419928 U CN209419928 U CN 209419928U
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- lamp bead
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- pulse signal
- led drive
- dimming device
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Abstract
The utility model provides a kind of dimming device, is related to display field.Dimming device, including controller, LED drive circuit, first switch and the first lamp bead in parallel therewith, second switch and the second lamp bead in parallel therewith, third switch and third lamp bead in parallel therewith and the 4th switch and the 4th lamp bead in parallel therewith；Controller inputs the 5th pulse signal to LED drive circuit, adjusts LED drive current；So that at least one of the first lamp bead, the second lamp bead, third lamp bead and the 4th lamp bead are lighted, wherein, frequency of the frequency of 5th pulse signal less than the first pulse signal, the second pulse signal, third pulse signal and the 4th pulse signal, to adjust the brightness lighted in the first lamp bead, the second lamp bead, third lamp bead and the 4th lamp bead by LED drive current, increase the light modulation depth of LED lamp bead.
Description
Technical field
The utility model relates to display fields, in particular to a kind of dimming device.
Background technique
Currently, it is common when carrying out light mixing using a variety of LED lamp beads on the market, in order to solve without visual stroboscopic problem, lead to
Often need by control LED lamp bead switching frequency setting 10KHz even more than, at this time with the raising of light modulating frequency, can go out
The case where now light modulation depth reduces, causes the minimum brightness of LED lamp bead to be in a high-value, influences user experience.
Utility model content
The purpose of this utility model is to provide a kind of dimming devices, can increase the light modulation depth of LED lamp bead.
To achieve the goals above, the utility model provides a kind of technical solution:
The utility model embodiment provides a kind of dimming device, and the dimming device includes controller, LED driving electricity
Road, first switch and the first lamp bead in parallel therewith, second switch and the second lamp bead in parallel therewith, third switch and therewith simultaneously
The third lamp bead of connection and the 4th switch and the 4th lamp bead in parallel therewith, the controller respectively with the LED drive circuit, the
One switch, second switch, third switch and the 4th switch electrical connection, the LED drive circuit are opened with the first switch, second
It closes, third switch and the 4th switch are electrically connected；
The controller to the first switch input the first pulse signal, control the closure of the first switch circuit with
The first lamp bead is lighted, or controls the disconnection of the first switch circuit so that first lamp bead is extinguished；
The controller to the second switch input the second pulse signal, control the closure of the second switch circuit with
The second lamp bead is lighted, or controls the disconnection of the second switch circuit so that second lamp bead is extinguished；
The controller to the third switch input third pulse signal, control the closure of the third switching circuit with
Third lamp bead is lighted, or controls the disconnection of the third switching circuit so that the third lamp bead is extinguished；
The controller to the 4th switch the 4th pulse signal of input, control the closure of the 4th switching circuit with
The 4th lamp bead is lighted, or controls the disconnection of the 4th switching circuit so that the 4th lamp bead is extinguished；
The controller inputs the 5th pulse signal to the LED drive circuit, adjusts LED drive current；So that described
At least one of first lamp bead, the second lamp bead, third lamp bead and the 4th lamp bead are lighted, wherein the 5th pulse signal
Frequency is less than the frequency of first pulse signal, the second pulse signal, third pulse signal and the 4th pulse signal, to pass through
The LED drive current adjusts the brightness lighted in first lamp bead, the second lamp bead, third lamp bead and the 4th lamp bead.
Further, the first pulse signal, the second pulse signal, third pulse signal and the 4th of the controller input
The frequency of pulse signal is greater than preset value, and the frequency of the 5th pulse signal is less than preset value.
Further, first pulse signal, the second pulse signal, third pulse signal of controller input,
4th pulse signal and the 5th pulse signal are pulse width modulating signal.
Further, first lamp bead is the lamp bead to emit white light.
Further, second lamp bead is the lamp bead to glow.
Further, the third lamp bead is the lamp bead of green light.
Further, the 4th lamp bead is the lamp bead of blue light-emitting.
Further, the LED drive circuit is constant current output circuit.
The utility model embodiment additionally provides a kind of dimming device, and the dimming device includes controller, LED driving electricity
Road, first switch and the first lamp bead in parallel therewith, second switch and the second lamp bead in parallel therewith, third switch and therewith simultaneously
The third lamp bead of connection and the 4th switch and the 4th lamp bead in parallel therewith, the controller respectively with the LED drive circuit, the
One switch, second switch, third switch and the 4th switch electrical connection, the LED drive circuit are opened with the first switch, second
It closes, third switch and the 4th switch are electrically connected；The dimming device further includes sampling resistor, the sampling resistor and the LED
Driving circuit series connection；
The controller inputs the first pulse signal to first switch, controls the closure of the first switch circuit so that the
One lamp bead is lighted, or controls the disconnection of the first switch circuit so that first lamp bead is extinguished；
The controller inputs the second pulse signal to second switch, controls the closure of the second switch circuit so that the
Two lamp beads are lighted, or control the disconnection of the second switch circuit so that second lamp bead is extinguished；
The controller switchs input third pulse signal to third, controls the closure of the third switching circuit so that the
Three lamp beads are lighted, or control the disconnection of the third switching circuit so that the third lamp bead is extinguished；
The controller controls the closure of the 4th switching circuit so that the to the 4th switch the 4th pulse signal of input
Four lamp beads are lighted, or control the disconnection of the 4th switching circuit so that the 4th lamp bead is extinguished；
The controller inputs the 5th pulse signal to the LED drive circuit, adjusts LED drive current；So that described
At least one of first lamp bead, the second lamp bead, third lamp bead and the 4th lamp bead are lighted, wherein the 5th pulse signal
Frequency is less than the frequency of first pulse signal, the second pulse signal, third pulse signal and the 4th pulse signal, to pass through
The LED drive current adjusts the brightness lighted in first lamp bead, the second lamp bead, third lamp bead and the 4th lamp bead.
Further, the dimming device further includes inductor, and the inductor is opened with the LED drive circuit, first
Pass, second switch, third switch and the 4th switch electrical connection.
Compared with the existing technology, the beneficial effect of dimming device provided by the utility model is:
A kind of dimming device provided by the utility model inputs the first pulse signal, control to first switch by controller
The closure of first switch circuit processed is so that the first lamp bead is lighted, or controls the disconnection of first switch circuit so that the first lamp bead is put out
It goes out；Second pulse signal is inputted to second switch, controls the closure of second switch circuit so that the second lamp bead is lighted, or is controlled
The disconnection of second switch circuit is so that the second lamp bead is extinguished；Input third pulse signal, control third switch electricity are switched to third
The closure on road is so that third lamp bead is lighted, or controls the disconnection of third switching circuit so that third lamp bead is extinguished；It opens the 4th
The 4th pulse signal of input is closed, controls the closure of the 4th switching circuit so that the 4th lamp bead is lighted, or control the 4th switchs electricity
The disconnection on road is so that the 4th lamp bead is extinguished；
The 5th pulse signal is inputted to LED drive circuit by controller, adjusts LED drive current；So that the first lamp bead,
At least one of second lamp bead, third lamp bead and the 4th lamp bead are lighted, wherein the frequency of the 5th pulse signal is less than the first arteries and veins
The frequency of signal, the second pulse signal, third pulse signal and the 4th pulse signal is rushed, to adjust the by LED drive current
The brightness lighted in one lamp bead, the second lamp bead, third lamp bead and the 4th lamp bead increases the light modulation depth of LED lamp bead.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the electrical block diagram of dimming device provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of the first lamp bead of dimming device provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram of the sampling resistor of dimming device provided by the embodiment of the utility model；
Fig. 4 is the structural schematic diagram of the inductor of dimming device provided by the embodiment of the utility model.
Icon: 1- dimming device；10-LED driving circuit；20- controller；The first lamp bead of 31-；The second lamp bead of 32-；33-
Third lamp bead；The 4th lamp bead of 34-；41- first switch；42- second switch；43- third switch；44- the 4th is switched；50- sampling
Resistance；60- inductor.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be understood that term " center ", "upper", "lower", "inner", "outside" etc. refer to
The orientation or positional relationship shown is to be based on the orientation or positional relationship shown in the drawings or when utility model product uses is used
The orientation or positional relationship that the orientation or positional relationship or those skilled in the art often put usually understand, merely to
Convenient for describing the utility model and simplifying description, rather than the equipment of indication or suggestion meaning or element must have specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second ", " third ", " the 4th " etc. are only used for distinguishing description, and should not be understood as indicating
Or imply relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " opening up ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to removable
Connection is unloaded, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment
Referring to Fig. 1, Fig. 1 show the electrical block diagram of dimming device 1 provided by the embodiment of the utility model.It adjusts
Electro-optical device 1 is mainly used for adjusting the brightness of LED lamp bead, is a kind of dress for facilitating user's adjusting that different LED lamp beads are carried out with light mixing
It sets.Dimming device 1 provided in this embodiment increases the light modulation depth of LED lamp bead, while also solving asking without visual stroboscopic
Topic.
Dimming device 1 include controller 20, LED drive circuit 10, first switch 41 and the first lamp bead 31 in parallel therewith,
Second switch 42 and the second lamp bead 32 in parallel therewith, third switch 43 and third lamp bead 33 in parallel therewith and the 4th switch 44
And in parallel the 4th lamp bead 34 therewith, controller 20 respectively with LED drive circuit 10, first switch 41, second switch 42, third
Switch 43 and the electrical connection of the 4th switch 44, LED drive circuit 10 and first switch 41, second switch 42, third switch 43 and the
The electrical connection of four switches 44.
Controller 20 inputs the first pulse signal to first switch 41, controls the closure of 41 circuit of first switch so that first
Lamp bead 31 is lighted, or controls the disconnection of 41 circuit of first switch so that the first lamp bead 31 is extinguished.
Controller 20 inputs the second pulse signal to second switch 42, controls the closure of 42 circuit of second switch so that second
Lamp bead 32 is lighted, or controls the disconnection of 42 circuit of second switch so that the second lamp bead 32 is extinguished.
Controller 20 inputs third pulse signal to third switch 43, controls the closure of 43 circuit of third switch so that third
Lamp bead 33 is lighted, or controls the disconnection of 43 circuit of third switch so that third lamp bead 33 is extinguished.
Controller 20 inputs the 4th pulse signal to the 4th switch 44, controls the closure of 44 circuit of the 4th switch so that the 4th
Lamp bead 34 is lighted, or controls the disconnection of 44 circuit of the 4th switch so that the 4th lamp bead 34 is extinguished.
Controller 20 inputs the 5th pulse signal to LED drive circuit 10, adjusts LED drive current；So that the first lamp bead
31, at least one of the second lamp bead 32, third lamp bead 33 and the 4th lamp bead 34 are lighted, wherein the frequency of the 5th pulse signal
Less than the frequency of the first pulse signal, the second pulse signal, third pulse signal and the 4th pulse signal, to be driven by LED
The brightness lighted in current regulation the first lamp bead 31, the second lamp bead 32, third lamp bead 33 and the 4th lamp bead 34.
Wherein, the frequency of the 5th pulse signal is less than the first pulse signal, the second pulse signal, third pulse signal and
The frequency of four pulse signals.First pulse signal, the second pulse signal, the frequency of third pulse signal and the 4th pulse signal are big
It is less than preset value in the frequency of preset value, the 5th pulse signal.
It should be noted that in the present embodiment, the first pulse signal, the second pulse signal, third pulse signal, the 4th arteries and veins
It rushes signal and the 5th pulse signal is pulse width modulating signal.
It should be noted that LED drive circuit 10 is constant current output circuit in the present embodiment.
Fig. 2 show the structural schematic diagram of the first lamp bead 31 of dimming device 1 provided by the embodiment of the utility model.
First lamp bead 31 is generally cylindrical, and is not limited to cylinder.First lamp bead 31 and the second lamp bead 32, third lamp bead
33,34 shape of the 4th lamp bead is identical, and only luminescent color is different.It should be noted that the first lamp bead 31 is to whiten in the present embodiment
The lamp bead of light；Second lamp bead 32 is the lamp bead to glow；Third lamp bead 33 is the lamp bead of green light；4th lamp bead 34 is blue light-emitting
Lamp bead.
Fig. 3 show the structural schematic diagram of the sampling resistor 50 of dimming device 1 provided by the embodiment of the utility model.
Dimming device 1 further includes sampling resistor 50, and sampling resistor 50 is connected with LED drive circuit 10.Sampling resistor 50 is big
It causes to be in convex shape, and shape without being limited thereto.Sampling resistor 50 is used to acquire the electric current of LED drive circuit 10, detection LED driving electricity
The size of 10 electric current of road.
Fig. 4 show the structural schematic diagram of the inductor 60 of dimming device 1 provided by the embodiment of the utility model.
Dimming device 1 further includes inductor 60, inductor 60 and LED drive circuit 10, first switch 41, second switch
42, third switch 43 and the electrical connection of the 4th switch 44.Inductor 60 is in substantially cylindrical, and is not limited to cylindrical.Inductance
Device 60 is used in the state that no electric current passes through, and hinders electric current to pass through when circuit is connected；In the state of thering is electric current to pass through, electricity
Maintain electric current constant when road disconnects.
The working principle of dimming device provided in this embodiment 1 introduced below:
By inputting the 5th pulse signal to LED drive circuit 10, LED drive current is adjusted；And make the first lamp bead 31,
At least one of second lamp bead 32, third lamp bead 33 and the 4th lamp bead 34 are lighted, to adjust the first lamp by LED drive current
The brightness lighted in pearl 31, the second lamp bead 32, third lamp bead 33 and the 4th lamp bead 34.
In conclusion a kind of dimming device 1 provided by the utility model, by controller 20 to the input of first switch 41 the
One pulse signal controls the closure of 41 circuit of first switch so that the first lamp bead 31 is lighted, or controls 41 circuit of first switch
Disconnection so that the first lamp bead 31 extinguish；Second pulse signal is inputted to second switch 42, control 42 circuit of second switch closes
It closes so that the second lamp bead 32 is lighted, or controls the disconnection of 42 circuit of second switch so that the second lamp bead 32 is extinguished；Third is opened
43 input third pulse signals are closed, control the closure of 43 circuit of third switch so that third lamp bead 33 is lighted, or controls third
The disconnection of 43 circuit of switch is so that third lamp bead 33 is extinguished；4th pulse signal, the 4th switch of control are inputted to the 4th switch 44
The closure of 44 circuits is so that the 4th lamp bead 34 is lighted, or controls the disconnection of 44 circuit of the 4th switch so that the 4th lamp bead 34 is put out
It goes out；
The 5th pulse signal is inputted to LED drive circuit 10 by controller 20, adjusts LED drive current；So that first
At least one of lamp bead 31, the second lamp bead 32, third lamp bead 33 and the 4th lamp bead 34 are lighted, wherein the 5th pulse signal
Frequency less than the first pulse signal, the second pulse signal, third pulse signal and the 4th pulse signal frequency, to pass through LED
The brightness lighted in drive current adjustment the first lamp bead 31, the second lamp bead 32, third lamp bead 33 and the 4th lamp bead 34, increases
The light modulation depth of LED lamp bead.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of dimming device, which is characterized in that the dimming device include controller, LED drive circuit, first switch and with
The first lamp bead of parallel connection, second switch and the second lamp bead in parallel therewith, third switch and third lamp bead in parallel therewith and
4th switch and the 4th lamp bead in parallel therewith, the controller are opened with the LED drive circuit, first switch, second respectively
Close, third switch and the 4th switch electrical connection, the LED drive circuit and the first switch, second switch, third switch and
4th switch electrical connection；
The controller inputs the first pulse signal to the first switch, controls the first switch closure so that the first lamp bead
It lights, or the control first switch disconnects so that first lamp bead is extinguished；
The controller inputs the second pulse signal to the second switch, controls the second switch closure so that the second lamp bead
It lights, or the control second switch disconnects so that second lamp bead is extinguished；
The controller switchs input third pulse signal to the third, controls the third and closes the switch so that third lamp bead
It lights, or the control third switch disconnects so that the third lamp bead is extinguished；
The controller closes the switch so that the 4th lamp bead the 4th switch the 4th pulse signal of input, control the described 4th
It lights, or control the 4th switch disconnects so that the 4th lamp bead is extinguished；
The controller inputs the 5th pulse signal to the LED drive circuit, adjusts LED drive current；So that described first
At least one of lamp bead, the second lamp bead, third lamp bead and the 4th lamp bead are lighted, wherein the frequency of the 5th pulse signal
Less than the frequency of first pulse signal, the second pulse signal, third pulse signal and the 4th pulse signal, by described
LED drive current adjusts the brightness lighted in first lamp bead, the second lamp bead, third lamp bead and the 4th lamp bead.
2. dimming device according to claim 1, which is characterized in that the first pulse signal of controller input, the
The frequency of two pulse signals, third pulse signal and the 4th pulse signal is greater than preset value, the frequency of the 5th pulse signal
Less than preset value.
3. dimming device according to claim 1, which is characterized in that first pulse letter of the controller input
Number, the second pulse signal, third pulse signal, the 4th pulse signal and the 5th pulse signal be pulse width modulating signal.
4. dimming device according to claim 1, which is characterized in that first lamp bead is the lamp bead to emit white light.
5. dimming device according to claim 1, which is characterized in that second lamp bead is the lamp bead to glow.
6. dimming device according to claim 1, which is characterized in that the third lamp bead is the lamp bead of green light.
7. dimming device according to claim 1, which is characterized in that the 4th lamp bead is the lamp bead of blue light-emitting.
8. dimming device according to claim 1, which is characterized in that the LED drive circuit is constant current output circuit.
9. a kind of dimming device, which is characterized in that the dimming device include controller, LED driving circuit, first switch and
First lamp bead in parallel, second switch and the second lamp bead in parallel therewith, third switch and third lamp bead in parallel therewith therewith
With the 4th switch and the 4th lamp bead in parallel therewith, the controller respectively with the LED drive circuit, first switch, second
Switch, third switch and the 4th switch electrical connection, the LED drive circuit and the first switch, second switch, third switch
With the 4th switch electrical connection；The dimming device further includes sampling resistor, the sampling resistor and the LED drive circuit string
Connection；
The controller inputs the first pulse signal to first switch, controls the first switch closure so that the first lamp bead point
It is bright, or the control first switch disconnects so that first lamp bead is extinguished；
The controller inputs the second pulse signal to second switch, controls the second switch closure so that the second lamp bead point
It is bright, or the control second switch disconnects so that second lamp bead is extinguished；
The controller switchs input third pulse signal to third, controls the third and closes the switch so that third lamp bead point
It is bright, or the control third switch disconnection is so that the third lamp bead is extinguished；
The controller closes the switch so that the 4th lamp bead point the 4th switch the 4th pulse signal of input, control the described 4th
It is bright, or control the 4th switch disconnection is so that the 4th lamp bead is extinguished；
The controller inputs the 5th pulse signal to the LED drive circuit, adjusts LED drive current；So that described first
At least one of lamp bead, the second lamp bead, third lamp bead and the 4th lamp bead are lighted, wherein the frequency of the 5th pulse signal
Less than the frequency of first pulse signal, the second pulse signal, third pulse signal and the 4th pulse signal, by described
LED drive current adjusts the brightness lighted in first lamp bead, the second lamp bead, third lamp bead and the 4th lamp bead.
10. dimming device according to claim 9, which is characterized in that the dimming device further includes inductor, the electricity
Sensor is electrically connected with the LED drive circuit, first switch, second switch, third switch and the 4th switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821666293.7U CN209419928U (en) | 2018-10-12 | 2018-10-12 | A kind of dimming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821666293.7U CN209419928U (en) | 2018-10-12 | 2018-10-12 | A kind of dimming device |
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| Publication Number | Publication Date |
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| CN209419928U true CN209419928U (en) | 2019-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201821666293.7U Active CN209419928U (en) | 2018-10-12 | 2018-10-12 | A kind of dimming device |
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| Country | Link |
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| CN (1) | CN209419928U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121258A (en) * | 2018-10-12 | 2019-01-01 | 青岛亿联客信息技术有限公司 | A kind of light-dimming method and dimming device |
-
2018
- 2018-10-12 CN CN201821666293.7U patent/CN209419928U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121258A (en) * | 2018-10-12 | 2019-01-01 | 青岛亿联客信息技术有限公司 | A kind of light-dimming method and dimming device |
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Address after: 266000 Qingdao Laoshan District, Shandong Province, No. 1, Keyuan-wei Road, Block B, 10-storey B4, Qingdao International Innovation Park Patentee after: Qingdao Yilai Intelligent Technology Co.,Ltd. Address before: 266000 Qingdao Laoshan District, Shandong Province, No. 1, Keyuan-wei Road, Block B, 10-storey B4, Qingdao International Innovation Park Patentee before: Qingdao Yeelink Information Technology Co.,Ltd. |
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