CN204669658U - LED light modulation toning circuit and be provided with the LED lamp of this circuit - Google Patents
LED light modulation toning circuit and be provided with the LED lamp of this circuit Download PDFInfo
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- CN204669658U CN204669658U CN201520316914.9U CN201520316914U CN204669658U CN 204669658 U CN204669658 U CN 204669658U CN 201520316914 U CN201520316914 U CN 201520316914U CN 204669658 U CN204669658 U CN 204669658U
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Abstract
The utility model discloses a kind of LED light modulation toning circuit and be provided with the LED lamp of this circuit, wherein light modulation toning circuit comprises AC-DC constant-current supply, this AC-DC constant-current supply incoming transport electricity, by DC+ voltage end and DC-voltage end output constant current, and be serially connected with LED between DC+ voltage end and DC-voltage end, LED comprises multiple LED lamp bead group be serially connected, each LED lamp bead group is the one in red colored lamp string, blue lamp string, green light string and white lamps string, and each LED lamp bead group all and be connected to a switch; Also comprise MCU circuit, this MCU circuit is all electrically connected with each switch.The LED light modulation toning circuit of the utility model LED lamp, is exported the PWM ripple of different duty, controls the break-make of each switch, and then adjust the average current of each lamp pearl group, thus achieve light modulation toning by MCU circuit.Again because LED light modulation toning circuit structure of the present utility model is simple, reaction speed is fast, thus reduces costs, and optimizes display effect.
Description
Technical field
The utility model relates to LED light modulation technology of mix colors field, particularly relates to a kind of LED light modulation toning circuit and is provided with the LED lamp of this circuit.
Background technology
LED (Light Emitting Diode, light-emitting diode) popularization and application of throwing light on, for society brings huge energy-conservation contribution.LED illumination, than traditional lighting, can realize more multicolour, and is widely used in sight illumination, Landscape Lighting.Realize color change at present, in main dependence light fixture red (red), Gree (green), blue (indigo plant), white (in vain) four kinds or R (red), G (green), B (indigo plant) three kinds of light source mixed lights form.But existing LED light modulation toning circuit has complex structure, and cost is high, the problem of control effects difference.
Utility model content
First object of the present utility model is to provide a kind of LED light modulation toning circuit, and the reaction speed of this LED light modulation toning circuit light modulation toning is fast, optimizes display effect; Improve conversion efficiency, and structure is simple, reduces cost.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of LED light modulation toning circuit comprises the AC-DC constant-current supply for AC conversion being become constant current, the input termination alternating current of described AC-DC constant-current supply, the output of described AC-DC constant-current supply comprises DC+ voltage end and DC-voltage end, LED is serially connected with between described DC+ voltage end and described DC-voltage end, described LED comprises multiple LED lamp bead group be serially connected, each described LED lamp bead group is the one in red colored lamp string, blue lamp string, green light string and white lamps string, and each described LED lamp bead group all and be connected to a switch; Also comprise the MCU circuit of output multi-channel PWM ripple, described MCU circuit is all electrically connected with each described switch, described MCU circuit controls the make-to-break ratio of described switch by the PWM ripple exporting different duty, and the average current adjusting each described LED lamp bead group realizes light modulation toning.
Optimal way is, field effect transistor selected by described switch, and the grid of described field effect transistor is electrically connected with described MCU circuit.
Optimal way is, described red colored lamp string is composed in series by the LED lamp bead of some redness.
Optimal way is, described blue lamp string is composed in series by the LED lamp bead of some bluenesss.
Optimal way is, described green light string is composed in series by the LED lamp bead of some greens.
Optimal way is, described white lamps string is composed in series by the LED lamp bead of some white.
Optimal way is, described LED comprises four LED lamp bead groups be serially connected, four described LED lamp bead groups are respectively red colored lamp string, blue lamp string, green light string and white lamps string, the positive pole exit of described red colored lamp string is electrically connected with described DC+ voltage end, and the negative pole exit of described white lamps string is electrically connected with described DC-voltage end; Described red colored lamp string is also connected to the first field effect transistor, and the source electrode of described first field effect transistor is electrically connected with the positive pole exit of described red colored lamp string, and the drain electrode of described first field effect transistor is electrically connected with the negative pole exit of described red colored lamp string; Described blue lamp string is also connected to the second field effect transistor, and the source electrode of described second field effect transistor is electrically connected with the positive pole exit of described blue lamp string, and the drain electrode of described second field effect transistor is electrically connected with the negative pole exit of described blue lamp string; Described green light string is also connected to the 3rd field effect transistor, and the source electrode of described 3rd field effect transistor is electrically connected with the positive pole exit of described green light string, and the drain electrode of described 3rd field effect transistor is electrically connected with the negative pole exit of described green light string; Described white lamps string is also connected to the 4th field effect transistor, and the source electrode of described 4th field effect transistor is electrically connected with the positive pole exit of described white lamps string, and the drain electrode of described 4th field effect transistor is electrically connected with the negative pole exit of described white lamps string.
Second object of the present utility model is to provide a kind of LED lamp, and this LED lamp has that cost is low, the reaction speed of light modulation toning is fast and optimize the advantage of display effect.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of LED lamp, described LED lamp comprises above-mentioned LED light modulation toning circuit.
After adopting technique scheme, the beneficial effects of the utility model are: because LED light modulation toning circuit of the present utility model comprises AC-DC constant-current supply, the AC conversion of access is become constant current by this AC-DC constant-current supply, exports respectively by DC+ voltage end and DC-voltage end.The LED that LED light modulation toning circuit of the present utility model is connected in series between DC+ voltage end and DC-voltage end, it comprises multiple LED lamp bead group be serially connected, and especially each LED lamp bead group is any one in red colored lamp string, blue lamp string, green light string and white lamps string.Simultaneously the utility model allows each LED lamp bead group connect a switch, and each switch is all electrically connected with a MCU circuit.Allow MCU circuit to the adjustable PWM ripple of the equal output duty cycle of each switch, control the switch on and off ratio of each LED lamp bead string, thus reach the object of the average current controlling each LED lamp bead group, namely by an AC-DC constant-current supply, light modulation toning is carried out to multiple LED lamp bead string, from the above, light modulation toning circuit structure of the present utility model is simple, and cost is low.Again because of the utility model be by MCU circuit to control the break-make of each switch, the reaction speed of adjustment is improved, also improves control precision, also optimize display effect.Be provided with the LED lamp of LED light modulation of the present utility model toning circuit, its low, reaction speed of cost with light modulation toning is fast, and optimizes the advantage of display effect.
Because field effect transistor selected by switch, and the grid of field effect transistor is electrically connected with MCU circuit; Because the make-to-break ratio of field effect transistor is high, thus light modulation toning reaction speed is improved further, display effect is better.
In sum, LED light modulation toning circuit of the present utility model, compared to prior art, solves the more complicated of light modulation toning circuit, the technical problem that efficiency is low, cost is high and technique effect is poor; LED light modulation of the present utility model toning circuit and be provided with the LED lamp of this circuit, because the structure of light modulation toning circuit is simple, greatly reduces the cost of product, improve the speed of reaction, and control precision, improve the display effect of adjustment brightness and adjustment color.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the utility model LED light modulation toning circuit;
Fig. 2 is the circuit diagram of embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of LED light modulation toning circuit, and be provided with the LED lamp of this circuit, wherein LED light modulation toning circuit comprises AC-DC constant-current supply, the input of AC-DC constant-current supply is electrically connected with the zero line N of alternating current and live wire L respectively, transforms its constant current exported export from DC+ voltage end and DC-voltage end respectively through AC-DC constant-current supply.
LED light modulation toning circuit of the present utility model has been connected in series LED between DC+ voltage end and DC-voltage end, LED comprises multiple LED lamp bead group, and all LED lamp bead groups are serially connected, the positive pole exit of primary LED lamp bead group is electrically connected with DC+ voltage end, and the negative pole exit of the last LED lamp bead group is electrically connected with DC-voltage end.Each LED lamp bead group is the one in red colored lamp string, blue lamp string, green light string and white lamps string.At the two ends of each LED lamp bead group also and be connected to a switch S 1 (Sn).The utility model also comprises MCU circuit, and MCU circuit can output multi-channel PWM ripple.The utility model allows the equal MCU circuit of each switch be electrically connected, and allows MCU circuit all input the PWM ripple of different duty to each switch.And MCU circuit is by the duty ratio of control PWM ripple, control the make-to-break ratio of each switch.By the LED lamp bead group bypass of correspondence after switch disconnects, switch connection rapidly by LED lamp bead group place in circuit, thus can have adjusted the average current of this LED lamp bead group, thus realizes the light modulation toning of this LED lamp bead group, sees on the whole and have adjusted overall look.
Field effect transistor selected by the switch of the present embodiment, and the grid of field effect transistor is electrically connected with MCU circuit, because the make-to-break ratio of field effect transistor is high, thus improves the reaction speed of light modulation toning, optimizes display effect further.
As shown in Figure 2, the LED of the present embodiment comprises four LED lamp bead groups be serially connected, and four LED lamp bead groups are respectively red colored lamp string Red, blue lamp string Blue, green light string Green and white lamps string White.
Wherein the positive pole exit of red colored lamp string Red is electrically connected with DC+ voltage end, and the negative pole exit of white lamps string White is electrically connected with DC-voltage end; Red colored lamp string Red is also connected to the first field effect transistor MOS1, the source electrode of the first field effect transistor MOS1 is electrically connected with the positive pole exit of red colored lamp string Red, the drain electrode of the first field effect transistor MOS1 is electrically connected with the negative pole exit of red colored lamp string Red, and the grid of the first field effect transistor MOS1 is electrically connected with MCU circuit.
Wherein blue lamp string Blue be connected to the second field effect transistor MOS2, the source electrode of the second field effect transistor MOS2 is electrically connected with the positive pole exit of blue lamp string Blue, the drain electrode of the second field effect transistor MOS2 is electrically connected with the negative pole exit of blue lamp string Blue, and the grid of the second field effect transistor MOS2 is electrically connected with MCU circuit.
Wherein green light string Green be connected to the 3rd field effect transistor MOS3, the source electrode of the 3rd field effect transistor MOS3 is electrically connected with the positive pole exit of green light string Green, the drain electrode of the 3rd field effect transistor MOS3 is electrically connected with the negative pole exit of green light string Green, and the grid of the 3rd field effect transistor MOS3 is electrically connected with MCU circuit.
Wherein white lamps string White be connected to the 4th field effect transistor MOS4, the source electrode of the 4th field effect transistor MOS4 is electrically connected with the positive pole exit of white lamps string White, the drain electrode of the 4th field effect transistor MOS4 is electrically connected with the negative pole exit of white lamps string White, and the grid of the 4th field effect transistor MOS4 is electrically connected with MCU circuit.
In the present embodiment, AC-DC constant-current supply provides constant voltage, and AC-DC constant-current supply module stability works, for LED provides electric current guarantee.Above-mentioned red colored lamp string Red is serially connected by many red LED lamp bead and forms, blue lamp string Blue is serially connected by many blue LED lamp bead and forms, green light string Green is serially connected by many green LED lamp bead and forms, white lamps string White is serially connected by many white LED lamp bead and forms, and the LED string of this spline structure can realize the light mixing effect of different colours and colour temperature.MCU circuit exports four road PWM ripples to four field effect transistor, control the break-make of four field effect transistor respectively, thus achieve the average current controlling to flow through red colored lamp string Red, blue lamp string Blue, green light string Green and white lamps string Whit respectively, namely controlled the object of multiple LED lamp bead group by an AC-DC constant-current supply simultaneously.The PWM ripple of the present embodiment directly controls opening of field effect transistor or turns off, and realizes rapid bypass LED lamp bead string, fully promotes the reaction speed of whole lamp in dimming process, achieves high accuracy and better display effect.
From the above, LED light modulation toning circuit of the present utility model both can realize the toning of whole lamp, light modulation and degree of lightening, and cost aspect reduces greatly than traditional light-modulating mode again; Because circuit structure is simple, practical application circuit is simple, is easy to industrial production manufacture.
The above preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, etc. same LED light modulation toning circuit structure improvement etc., all should be included within protection range of the present utility model.
Claims (8)
1.LED light modulation toning circuit, comprise the AC-DC constant-current supply for AC conversion being become constant current, the input termination alternating current of described AC-DC constant-current supply, the output of described AC-DC constant-current supply comprises DC+ voltage end and DC-voltage end, it is characterized in that, LED is serially connected with between described DC+ voltage end and described DC-voltage end, described LED comprises multiple LED lamp bead group be serially connected, each described LED lamp bead group is red colored lamp string, blue lamp string, one in green light string and white lamps string, and each described LED lamp bead group all and be connected to a switch, also comprise the MCU circuit of output multi-channel PWM ripple, described MCU circuit is all electrically connected with each described switch, described MCU circuit controls the make-to-break ratio of described switch by the PWM ripple exporting different duty, and the average current adjusting each described LED lamp bead group realizes light modulation toning.
2. LED light modulation toning circuit according to claim 1, it is characterized in that, field effect transistor selected by described switch, and the grid of described field effect transistor is electrically connected with described MCU circuit.
3. LED light modulation toning circuit according to claim 1, it is characterized in that, described red colored lamp string is composed in series by the LED lamp bead of some redness.
4. LED light modulation toning circuit according to claim 1, it is characterized in that, described blue lamp string is composed in series by the LED lamp bead of some bluenesss.
5. LED light modulation toning circuit according to claim 1, it is characterized in that, described green light string is composed in series by the LED lamp bead of some greens.
6. LED light modulation toning circuit according to claim 1, it is characterized in that, described white lamps string is composed in series by the LED lamp bead of some white.
7. the LED light modulation toning circuit according to any one of claim 1 to 6, it is characterized in that, described LED comprises four LED lamp bead groups be serially connected, four described LED lamp bead groups are respectively red colored lamp string, blue lamp string, green light string and white lamps string, the positive pole exit of described red colored lamp string is electrically connected with described DC+ voltage end, and the negative pole exit of described white lamps string is electrically connected with described DC-voltage end;
Described red colored lamp string is also connected to the first field effect transistor, and the source electrode of described first field effect transistor is electrically connected with the positive pole exit of described red colored lamp string, and the drain electrode of described first field effect transistor is electrically connected with the negative pole exit of described red colored lamp string;
Described blue lamp string is also connected to the second field effect transistor, and the source electrode of described second field effect transistor is electrically connected with the positive pole exit of described blue lamp string, and the drain electrode of described second field effect transistor is electrically connected with the negative pole exit of described blue lamp string;
Described green light string is also connected to the 3rd field effect transistor, and the source electrode of described 3rd field effect transistor is electrically connected with the positive pole exit of described green light string, and the drain electrode of described 3rd field effect transistor is electrically connected with the negative pole exit of described green light string;
Described white lamps string is also connected to the 4th field effect transistor, and the source electrode of described 4th field effect transistor is electrically connected with the positive pole exit of described white lamps string, and the drain electrode of described 4th field effect transistor is electrically connected with the negative pole exit of described white lamps string.
8. a LED lamp, is characterized in that, described LED lamp comprises the LED light modulation toning circuit described in any one of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316914.9U CN204669658U (en) | 2015-05-16 | 2015-05-16 | LED light modulation toning circuit and be provided with the LED lamp of this circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520316914.9U CN204669658U (en) | 2015-05-16 | 2015-05-16 | LED light modulation toning circuit and be provided with the LED lamp of this circuit |
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|---|---|
| CN204669658U true CN204669658U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520316914.9U Expired - Fee Related CN204669658U (en) | 2015-05-16 | 2015-05-16 | LED light modulation toning circuit and be provided with the LED lamp of this circuit |
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| CN (1) | CN204669658U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105848339A (en) * | 2016-04-08 | 2016-08-10 | 厦门大学 | Intelligent dimming toning method and device for multi-color LED illumination light source |
| CN110493932A (en) * | 2019-09-24 | 2019-11-22 | 宁波颐栎庭园用品有限公司 | Intelligent light control system |
-
2015
- 2015-05-16 CN CN201520316914.9U patent/CN204669658U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105848339A (en) * | 2016-04-08 | 2016-08-10 | 厦门大学 | Intelligent dimming toning method and device for multi-color LED illumination light source |
| CN105848339B (en) * | 2016-04-08 | 2018-08-10 | 厦门大学 | A kind of multi-primary LED lighting source intelligent dimming shading process and device |
| CN110493932A (en) * | 2019-09-24 | 2019-11-22 | 宁波颐栎庭园用品有限公司 | Intelligent light control system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20200516 |
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| CF01 | Termination of patent right due to non-payment of annual fee |