CN203038639U - Led pixel lamp circuit - Google Patents
Led pixel lamp circuit Download PDFInfo
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- CN203038639U CN203038639U CN2012207005182U CN201220700518U CN203038639U CN 203038639 U CN203038639 U CN 203038639U CN 2012207005182 U CN2012207005182 U CN 2012207005182U CN 201220700518 U CN201220700518 U CN 201220700518U CN 203038639 U CN203038639 U CN 203038639U
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Abstract
The utility model discloses an LED pixel lamp circuit, which comprises a red LED string light, a blue LED string light, a green LED string light, an input interface, an output interface and a driver chip. A positive terminal of each string light is connected to a power input pin of the input interface. Each string light's negative terminal is respectively connected to three constant current output ends of the driver chip. Three input ends of the driver chip are grounded, wherein the three input ends are connected with external resistors. A clock input pin and a three-color control signal input pin of the input interface are respectively connected to a clock input pin and a three-color control signal input pin of the driver chip. A clock output pin and a three-color control signal output pin of the output interface are respectively connected to a clock output pin and a three-color control signal output pin of the driver chip. A power output pin of the output interface is connected to a power input pin of the input interface. Ground pins of the input interface and the output interface are grounded. As for luminous points of the LED pixel lamp circuit, the three color string lights are combined to form a large-scale point light source which has high light intensity. The constructed LED pixel lamp can meet requirements of a large-scale LED panel.
Description
[technical field]
The utility model relates to led circuit, relates in particular to a kind of LED pixel lamp circuit.
[background technology]
Traditional three or four LED lamps of LED pixel lamp circuit employing are formed the pixel lamp of three looks, China's utility model patent 200720048966.8 discloses a new LED pixel lamp module, comprise the pixel lamp face-piece, the pixel lamp drain pan, power switch, control circuit board and LED pixel lamp, each LED pixel lamp is by red, blue, four LED lamps of green three looks are formed, four lamp quadrangularlies are arranged, wherein two red lights lay respectively at tetragonal two diagonal angles, described two red LED lamp connect by series system, green LED lamp and blue led lamp are connected in parallel with two red LED lamp of connecting respectively, the luminous point of this pixel lamp is too little, the luminous intensity deficiency, can only accomplish small-sized pattern decorative, can't satisfy large-scale pattern contour and show, therefore need the pointolite that a kind of LED pixel lamp is used for the profile demonstration of large-scale pattern and moulding badly.
[summary of the invention]
The technical problems to be solved in the utility model provides a kind of LED pixel lamp circuit, is suitable for the LED pixel lamp of large screen display.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is that a kind of LED pixel lamp circuit comprises red LED lamp string, blue led lamp string, green LED lamp string, input interface, output interface and driving chip; The power supply input pin of the anodal termination input interface of red LED lamp string, blue led lamp string and green LED lamp string, the negative pole end of red LED lamp string, blue led lamp string and green LED lamp string connects three constant current output terminals that drive chip respectively, drives three input end pin ground connection that connect outer meeting resistance of chip; Input interface clock input pin and three color control signal input pins connect clock input pin and the three color control signal input pins that drive chip respectively; Output interface clock output pin and three color control signal output pins connect clock output pin and the three color control signal output pins that drive chip respectively; The power supply output pin of output interface connects input interface power supply input pin, the grounding leg ground connection of input interface and output interface.
Above-described LED pixel lamp circuit, comprise chip power, chip power comprises circuit of three-terminal voltage-stabilizing integrated, and the voltage input end of circuit of three-terminal voltage-stabilizing integrated connects the power supply input pin of input interface, voltage output end connects the power supply input pin that drives chip, earth terminal ground connection.
Above-described LED pixel lamp circuit, chip power comprises filter capacitor, the voltage output end of a termination circuit of three-terminal voltage-stabilizing integrated of filter capacitor, other end ground connection.
Above-described LED pixel lamp circuit drives the clock input pin of chip and three color control signal input pins connect circuit of three-terminal voltage-stabilizing integrated by pull-up resistor separately voltage output end.
Above-described LED pixel lamp circuit drives the clock output pin of chip and the three color control signal output pins series resistor by separately to output interface.
Above-described LED pixel lamp circuit, three input ends of the connection outer meeting resistance of driving chip pass through regulation and control resistance eutral grounding separately.
Above-described LED pixel lamp circuit, each LED lamp string comprises two parallel branches, each parallel branch comprises current-limiting resistance and 3-4 LED lamp of series connection; Wherein, each parallel branch of red LED lamp string is that 4 LED lamps are connected with current-limiting resistance, and each parallel branch of blue led lamp string and green LED lamp string is that 3 LED lamps are connected with current-limiting resistance.
Above-described LED pixel lamp circuit, described driving chip is the MBI6020 chip.
Above-described LED pixel lamp circuit, described circuit of three-terminal voltage-stabilizing integrated is the 78L05 integrated circuit (IC) chip.
Above-described LED pixel lamp circuit comprises power input interface and electric capacity, and the power supply input pin of power input interface connects input interface power supply input pin; The grounding leg ground connection of power input interface, a termination input interface power supply input pin of electric capacity, other end ground connection.
The luminous point of the utility model LED pixel lamp circuit adopts the combination of tri coloured lantern string, forms the pointolite of a big specification, the luminous intensity height, and the LED pixel lamp of formation can satisfy the needs of large-scale pattern and moulding profile LED display.
[description of drawings]
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the circuit diagram of the utility model LED pixel lamp circuit embodiments.
[embodiment]
In the utility model embodiment shown in Figure 1, LED pixel lamp circuit comprises red LED lamp string, blue led lamp string, green LED lamp string, input interface IN, output interface OUT, power input interface POW, chip power and driving chip MBI6020.
Each LED lamp string comprises two parallel branches, and each parallel branch comprises current-limiting resistance and 3-4 LED colored lights of series connection.Wherein, each parallel branch of red LED lamp string is that 4 red LED lamp DR connect with current-limiting resistance R6; Each parallel branch of blue led lamp string is that 3 blue led lamp DB connect with current-limiting resistance R8.Each parallel branch of green LED lamp string is that 3 green LED lamp DG connect with current-limiting resistance R7.
The power supply input pin of the anodal termination input interface IN of red LED lamp string, blue led lamp string and green LED lamp string, the negative pole end of red LED lamp string, blue led lamp string and green LED lamp string meets wiring pin/OUTC, wiring pin/OUTA and the wiring pin/OUTB that drives chip respectively, and lamp serial connection lower margin R-EXTA, the R-EXTB and the R-EXTC that drive chip pass through regulation and control resistance R B, RG and RR ground connection respectively.
The clock input pin CKI of input interface IN and three looks (serial) control signal input pin SDI meet clock input pin CKI and three looks (serial) the control signal input pin SDI that drives chip respectively.The clock output pin CKO of output interface OUT and three looks (serial) control signal output pin SDO meet clock output pin CKO and three looks (serial) the control signal output pin SDO that drives chip respectively.
The power supply output pin of output interface OUT connects input interface IN power supply input pin, and the grounding leg of input interface IN and output interface OUT is ground connection respectively, drives the GND pin ground connection of chip MBI6020.
Chip power comprises circuit of three-terminal voltage-stabilizing integrated 78L05 and filter capacitor C2, C3, and the voltage input end Vin of circuit of three-terminal voltage-stabilizing integrated connects the power supply input pin of input interface IN, and voltage output end Vout connects the power supply input pin VDD that drives chip, GND pin ground connection.
The voltage output end Vout of the termination circuit of three-terminal voltage-stabilizing integrated of filter capacitor C2, C3, other end ground connection.
Drive the clock input pin CKI of chip and three looks (serial) control signal input pin SDI pull-up resistor R2 and the R1 voltage output end Vout that connects circuit of three-terminal voltage-stabilizing integrated by separately.
Drive the clock output pin CKO of chip and three looks (serial) control signal output pin SDO by separately series resistor R3 and R4 to output interface.
Input interface IN power supply input pin connects 12V power input interface input pin.
The termination input interface IN power supply input pin of 12V power filtering capacitor C1, other end ground connection.12V input power supply supplies LED lamp string on the one hand, outputs to OUT output interface power supply output pin simultaneously, the grounding leg ground connection of power interface POW.The POW power socket be used for to connect the 12V constant pressure source, when a plurality of pixel lamps are connected in series a time-out, and first POW power supply seated connection constant pressure source only, the rest of pixels lamp constitutes electric power loop by power supply and ground on input IN and output OUT 6 needle stands.
Input, output interface are selected 6 needle sockets for use, input signal comprises: clock CKI and LED R, G, B three looks (serial) control signal SDI, output signal comprises: clock CKO and LED R, G, B three looks (serial) control signal SDO, LED drives and selects IC 6020 for use, driving power is to pass through circuit of three-terminal voltage-stabilizing integrated 78L05 by the 12V direct supply, obtains the 5V power supply.LED drive IC (MBI6020) receives input signal CLI and the SDI of input interface, 6020 5,6,7 pin are the driving conditioning signal of LED R, G, B, it connects resistance R R, RB, RG are the regulation and control resistance of LED R, G, B, regulates three coloured light and imitates, and reaches optimum efficiency.Pin 14,15,16 is 3 paths of LEDs drive output signal, is transferred on the led circuit, can guarantee that the luminous actual effect of LED reaches optimum efficiency.Pin 12, the 13rd, the signal output pin, output signal CKO, SDO output to accessory power outlet.According to the luminescence efficiency of LED and color ratio relation, led circuit adopts 8R6G6B, and it is luminous can to reach desirable display effect fully.
Claims (10)
1. a LED pixel lamp circuit is characterized in that, comprises red LED lamp string, blue led lamp string, green LED lamp string, input interface, output interface and driving chip; The power supply input pin of the anodal termination input interface of red LED lamp string, blue led lamp string and green LED lamp string, the negative pole end of red LED lamp string, blue led lamp string and green LED lamp string connects three constant current output terminals that drive chip respectively, drives three input end pin ground connection that connect outer meeting resistance of chip; Input interface clock input pin and three color control signal input pins connect clock input pin and the three color control signal input pins that drive chip respectively; Output interface clock output pin and three color control signal output pins connect clock output pin and the three color control signal output pins that drive chip respectively; The power supply output pin of output interface connects input interface power supply input pin, the grounding leg ground connection of input interface and output interface.
2. LED pixel lamp circuit according to claim 1, it is characterized in that, comprise chip power, chip power comprises circuit of three-terminal voltage-stabilizing integrated, the voltage input end of circuit of three-terminal voltage-stabilizing integrated connects the power supply input pin of input interface, voltage output end connects the power supply input pin that drives chip, earth terminal ground connection.
3. LED pixel lamp circuit according to claim 2 is characterized in that chip power comprises filter capacitor, the voltage output end of a termination circuit of three-terminal voltage-stabilizing integrated of filter capacitor, other end ground connection.
4. LED pixel lamp circuit according to claim 2 is characterized in that, drives the clock input pin of chip and three color control signal input pins connect circuit of three-terminal voltage-stabilizing integrated by pull-up resistor separately voltage output end.
5. LED pixel lamp circuit according to claim 2 is characterized in that, drives the clock output pin of chip and the three color control signal output pins series resistor by separately to output interface.
6. LED pixel lamp circuit according to claim 1 is characterized in that, three input ends of the connection outer meeting resistance of driving chip pass through regulation and control resistance eutral grounding separately.
7. LED pixel lamp circuit according to claim 1 is characterized in that, each LED lamp string comprises two parallel branches, and each parallel branch comprises current-limiting resistance and 3-4 LED lamp of series connection; Wherein, each parallel branch of red LED lamp string is that 4 LED lamps are connected with current-limiting resistance, and each parallel branch of blue led lamp string and green LED lamp string is that 3 LED lamps are connected with current-limiting resistance.
8. LED pixel lamp circuit according to claim 1 is characterized in that, described driving chip is the MBI6020 chip.
9. LED pixel lamp circuit according to claim 2 is characterized in that, described circuit of three-terminal voltage-stabilizing integrated is the 78L05 integrated circuit (IC) chip.
10. LED pixel lamp circuit according to claim 1 is characterized in that, comprises power input interface and electric capacity, and the power supply input pin of power input interface connects input interface power supply input pin; The grounding leg ground connection of power input interface, a termination input interface power supply input pin of electric capacity, other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207005182U CN203038639U (en) | 2012-12-18 | 2012-12-18 | Led pixel lamp circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207005182U CN203038639U (en) | 2012-12-18 | 2012-12-18 | Led pixel lamp circuit |
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| Publication Number | Publication Date |
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| CN203038639U true CN203038639U (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012207005182U Expired - Fee Related CN203038639U (en) | 2012-12-18 | 2012-12-18 | Led pixel lamp circuit |
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| CN (1) | CN203038639U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489407A (en) * | 2013-10-12 | 2014-01-01 | 深圳市大族元亨光电股份有限公司 | Non-control-lightening-free shadow elimination circuit for LED (Light Emitting Diode) display screen |
| CN103886821A (en) * | 2014-04-21 | 2014-06-25 | 广州励成电子科技有限公司 | Rolling colorful display LED advertising lamp box |
| CN104050929A (en) * | 2014-07-10 | 2014-09-17 | 广东威创视讯科技股份有限公司 | LED control device and LED display screen |
| CN104658479A (en) * | 2015-03-03 | 2015-05-27 | 谢良占 | System for wirelessly deploying external resistor on constant current driving chip of LED display screen |
| CN104684182A (en) * | 2013-12-03 | 2015-06-03 | 深圳市海洋王照明工程有限公司 | Three-channel high-power LED (Light Emitting Diode) drive circuit |
| CN105070245A (en) * | 2015-07-31 | 2015-11-18 | 苏州合欣美电子科技有限公司 | Static LED display screen driving circuit |
| CN105161054A (en) * | 2015-09-14 | 2015-12-16 | 苏州市新瑞奇节电科技有限公司 | LED drive circuit |
| CN112444963A (en) * | 2019-08-30 | 2021-03-05 | 成都理想境界科技有限公司 | Light source driving circuit and display module |
-
2012
- 2012-12-18 CN CN2012207005182U patent/CN203038639U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489407A (en) * | 2013-10-12 | 2014-01-01 | 深圳市大族元亨光电股份有限公司 | Non-control-lightening-free shadow elimination circuit for LED (Light Emitting Diode) display screen |
| CN103489407B (en) * | 2013-10-12 | 2015-06-03 | 深圳市大族元亨光电股份有限公司 | Non-control-lightening-free shadow elimination circuit for LED (Light Emitting Diode) display screen |
| CN104684182A (en) * | 2013-12-03 | 2015-06-03 | 深圳市海洋王照明工程有限公司 | Three-channel high-power LED (Light Emitting Diode) drive circuit |
| CN103886821A (en) * | 2014-04-21 | 2014-06-25 | 广州励成电子科技有限公司 | Rolling colorful display LED advertising lamp box |
| CN104050929A (en) * | 2014-07-10 | 2014-09-17 | 广东威创视讯科技股份有限公司 | LED control device and LED display screen |
| CN104658479A (en) * | 2015-03-03 | 2015-05-27 | 谢良占 | System for wirelessly deploying external resistor on constant current driving chip of LED display screen |
| CN105070245A (en) * | 2015-07-31 | 2015-11-18 | 苏州合欣美电子科技有限公司 | Static LED display screen driving circuit |
| CN105161054A (en) * | 2015-09-14 | 2015-12-16 | 苏州市新瑞奇节电科技有限公司 | LED drive circuit |
| CN112444963A (en) * | 2019-08-30 | 2021-03-05 | 成都理想境界科技有限公司 | Light source driving circuit and display module |
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Legal Events
| 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: 20130703 Termination date: 20141218 |
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| EXPY | Termination of patent right or utility model |