CN105161015A - Telescopic LED display screen - Google Patents
Telescopic LED display screen Download PDFInfo
- Publication number
- CN105161015A CN105161015A CN201510580471.9A CN201510580471A CN105161015A CN 105161015 A CN105161015 A CN 105161015A CN 201510580471 A CN201510580471 A CN 201510580471A CN 105161015 A CN105161015 A CN 105161015A
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- Prior art keywords
- led
- led display
- telescopic
- display screen
- lamp bar
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Abstract
The invention discloses a telescopic LED display screen which comprises a control system, an LED display screen and an LED display screen telescopic control system. The control system comprises a sending card, a receiving card, a distributor and an upper computer. The LED display screen comprises a plurality of telescopic LED lamp strip modules connected sequentially, each telescopic LED lamp strip module comprises a lamp strip module and a connecting piece connected with the lamp strip module, and the connecting piece comprises two parts connected movably. The LED display screen telescopic control system comprises a supporting frame, guide rails, a driving motor and a lifting pulley. The guide rails are parallelly arranged on the supporting frame and connected with the LED display screen through the lifting pulley, and the driving motor drives the lifting pulley to drive the telescopic movement of the LED display screen. The telescopic LED display screen is folded when unused in the daytime and is opened when needed at night, and thus the attractiveness of a building and light permeability are not affected.
Description
Technical field
The invention belongs to electronics applications field, be specifically related to a kind of telescopic LED display.
Background technology
LED display (LEDpanel): LED is exactly lightemittingdiode, the english abbreviation of light emitting diode, is called for short LED.It is a kind of display mode by controlling semiconductor light-emitting-diode, and its general appearance is exactly be made up of a lot of individual normally red light emitting diode, and the light on and off by lamp show character.Be used for showing the display screen of the various information such as word, figure, image, animation, market, video, video signal.
LED display mainly contains following characteristics:
1, brightness is high: the brightness of outdoor LED display screen is greater than 8000mcd/m2, is at present uniquely can the large-scale display terminal of round-the-clock use out of doors; The brightness of indoor LED display is greater than 2000md/m2.
2, the life-span is long: the LED life-span reaches 100, and more than 000 hour (10 years), this parameter generally all refers to designed life, and brightness is dark also calculates.
3, visual angle is large: indoor visual angle can be greater than 160 degree, and outdoor visual angle can be greater than 120 degree.The size at visual angle depends on the shape of LED light emitting diode.
4, screen area is changeable, little of less than a square meter, greatly then can reach hundreds of, thousands of square meter; 5, easy and computer interface, support software enriches.
Light bar is the abbreviation of LED, and time most people say, uncomfortable noun is oversize, so LED above to eliminating, is directly just light bar.Before the call of such light bar also contains, the direct of a lot of large two wires, the strategic hinterland areas of China, circle two wires etc. connected LED with wire rod and without the old-fashioned light bar of FPC or PCB, certainly also just contained flexible light band and hard light bar.
The hard lamp bar of LED does assembling wiring board with PCB hardboard, and the useful paster LED of LED carries out assembling, and also useful straight cutting LED carries out assembling, optionally different and adopt different elements.The advantage of hard lamp bar is fixed than being easier to, and processes and install all more convenient; Shortcoming arbitrarily to bend, and is not suitable for irregular place.Hard lamp bar paster LED have the good plurality of specifications such as 18 LEDs, 24 LEDs, 30 LEDs, 36 LEDs, 40 LEDs; Have the different sizes such as 18,24,36,48 with straight cutting LED, what have front also has side, lateral emitting be Wall-shaped lamp strip again.
In LED lamp bar display applications process, power supply is an important Consideration, the need of work of LED display has stable electric current and voltage, if electric current and voltage is unstable, immediate current can be caused to impact, damage LED, cause LED dead point phenomenon, have impact on the application of whole LED lamp bar display screen, therefore, is very high to the stability requirement of power supply.
And, LED lamp bar display screen constantly pursues Penetration ration, Ge great producer is also ceaselessly saying that LED lamp bar is to narrow future development, the space of such PCB layout is more and more less, but, need again the integrality ensureing power supply, stability, the design difficulty of LED lamp bar is increasing, and therefore, the design of LED lamp bar needs to consider links.
At present, the LED display of many open airs is all installed on office block, for many office blocks, staff in building wishes that can there be good visual effect on daytime, and many LED display are all just use at night, therefore, some hard-wired LED display by day time just have impact on light transmission and the visual effect of office block, need a kind of light transmission good, do not affect the LED display of vision.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of telescopic LED display, and solving outdoor office block LED display printing opacity rate variance in prior art affects the problem of visual effect.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of telescopic LED display, comprise control system, LED display and LED display telescopic control system, described control system comprises sending card, receiving card, divider, host computer, described LED display comprises the multiple telescopic LED lamp bar module connected successively, the web member that described telescopic LED lamp bar module comprises lamp bar assembly and is connected with lamp bar assembly, described web member comprises two parts of flexible connection, can moving rotary 360 degree between two parts of web member; Described LED display telescopic control system comprises bracing frame, guide rail, drive motor, lifting pulley, support frame as described above fixedly mounts, described guide rail parallel is arranged on bracing frame, described guide rail is connected by lifting pulley with between LED display, and drive motor drives lifting pulley to drive the stretching motion of LED display.
Described lamp bar assembly comprises lamp bar shell and PCB assembly, described lamp bar shell is aluminum base material, outside is provided with insulation course, described PCB assembly comprises pcb board, and be arranged at multiple LED in pcb board front and be arranged at the driving circuit at the pcb board back side, described driving circuit comprises driving chip, power circuit, filtering circuit, described LED comprises one group of red LED lamp, one group of green LED lamp, one group of blue led lamp, often organize LED and all connect a driving chip, each signal output pin of driving chip is respectively connected with a LED, wherein, all to connect between red LED lamp with power supply a current-limiting resistance, the input end of described power circuit is connected voltage follower with between external power source output terminal, the input end of voltage follower connects the output terminal of external power source, the output terminal of voltage follower connects the power input of LED drive circuit, described filtering circuit comprises electric source filter circuit and signal filter circuit.
Described driving chip comprises 8 or 16 drive singal output pins, control signal input pin, control signal output pin, sheets select input pin, latch signal pin, a clock signal pin, wherein, the control signal input pin of three driving chip, output pin are sequentially connected in series.
Described electric source filter circuit adopts capacitor filtering, and described signal filter circuit adopts magnetic bead filtering, and described LED is paster LED lamp or plug-in unit LED.
Described electric capacity comprises three electric capacity be connected in parallel, and the capacitance of each electric capacity is not etc., at least differs an order of magnitude.
The resistance of described current-limiting resistance is 50 Europe, Europe ~ 100.
Described driving chip is MBI5024 or MBI5167 that scientific & technical corporation is built up in Taiwan.
Compared with prior art, the present invention has following beneficial effect:
1, telescopic LED display, packs up time not no by day, opens, can not affect the attractive in appearance of buildings and light pass-through rate like this time need in the evening.
2, LED lamp bar module arranges web member, and web member is divided into two parts of flexible connection, when making to be connected with each other between LED lamp bar module, can be received into together, like this, after display screen is installed, can open when needs, pack up time unwanted, improve the dirigibility of display applications.
3, a voltage follower is increased at the input port of power supply, the power supply inputing to LED drive circuit is made to keep stable, avoid power supply disturbance or rush of current to cause the damage of LED, improve the stability of LED display, avoid the problem that LED lamp bar power supply is uneven.
4, by a resistance of connecting in red LED lamp, effectively play the effect of dividing potential drop, reduce the impact to red LED lamp, increase serviceable life, effectively reduce the generation of dead point rate.
The resistance of 5, connecting between 50 Europe, Europe ~ 100, effectively can play the effect of dividing potential drop, does not affect the brightness of normal red LED lamp simultaneously.
6, MBI5024 chip is that a performance that accumulation science and technology in Taiwan controls to release for LED display is specially high, the chip that cost is low, and the LED display control for the type can realize its display demand, reduces the cost of whole screen simultaneously.
Accompanying drawing explanation
Fig. 1 is driving circuit figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, structure of the present invention and the course of work are described further.
As shown in Figure 1, a kind of telescopic LED display, comprise control system, LED display and LED display telescopic control system, described control system comprises sending card, receiving card, divider, host computer, described LED display comprises the multiple telescopic LED lamp bar module connected successively, the web member that described telescopic LED lamp bar module comprises lamp bar assembly and is connected with lamp bar assembly, described web member comprises two parts of flexible connection, can moving rotary 360 degree between two parts of web member; Described LED display telescopic control system comprises bracing frame, guide rail, drive motor, lifting pulley, support frame as described above fixedly mounts, described guide rail parallel is arranged on bracing frame, described guide rail is connected by lifting pulley with between LED display, and drive motor drives lifting pulley to drive the stretching motion of LED display.
Described lamp bar assembly comprises lamp bar shell and PCB assembly, described lamp bar shell is aluminum base material, outside is provided with insulation course, described PCB assembly comprises pcb board, and be arranged at multiple LED in pcb board front and be arranged at the driving circuit at the pcb board back side, described driving circuit comprises driving chip, power circuit, filtering circuit, described LED comprises one group of red LED lamp, one group of green LED lamp, one group of blue led lamp, often organize LED and all connect a driving chip, each signal output pin of driving chip is respectively connected with a LED, wherein, all to connect between red LED lamp with power supply a current-limiting resistance, the input end of described power circuit is connected voltage follower with between external power source output terminal, the input end of voltage follower connects the output terminal of external power source, the output terminal of voltage follower connects the power input of LED drive circuit, described filtering circuit comprises electric source filter circuit and signal filter circuit.
Described driving chip comprises 8 or 16 drive singal output pins, control signal input pin, control signal output pin, sheets select input pin, latch signal pin, a clock signal pin, wherein, the control signal input pin of three driving chip, output pin are sequentially connected in series.
Described electric source filter circuit adopts capacitor filtering, and described signal filter circuit adopts magnetic bead filtering, and described LED is paster LED lamp or plug-in unit LED.
Described electric capacity comprises three electric capacity be connected in parallel, and the capacitance of each electric capacity is not etc., at least differs an order of magnitude.
The resistance of described current-limiting resistance is 50 Europe, Europe ~ 100.
Described driving chip is MBI5024 or MBI5167 that scientific & technical corporation is built up in Taiwan.
This chip has following features:
MBI5024 utilizes up-to-date PrecisionDrive technology, and aim at the drive IC of LED display panel design, the CMOS bit shift register that it is built-in and bolt-lock function, can convert the input data of serial to parallel output data formats.
The input voltage range value of MBI5024 is 3.3 volts to 5 volts, provides 16 current sources, 3-45mA can be provided to determine the magnitude of current with driving LED in each output stage; And in single IC the current difference of output channel be less than ± 3%; Output current difference between many IC is less than ± and 6%; Electric current, along with output terminal withstand voltage (VDS) change, is controlled in every volt 0.1%; And electric current is subject to service voltage (VDD), the change of environment temperature is also controlled in 1%.User can via selecting the RSET of different resistance to adjust the size of current of each output stage of MBI5024, by this mechanism, and user can the luminosity of accurately control LED.
The design of MBI5024 ensures that its output stage can be withstand voltage 17 volts, therefore can be connected in series multiple LED at each output terminal.
In addition, MBI5024 also provides the high clock frequency of 25MHz to meet system to the demand in mass data transmission.
Control element in LED display adopts MBI5024 control chip, MBI5024 chip is that a performance that accumulation science and technology in Taiwan controls to release for LED display is specially high, the chip that cost is low, LED display for the type controls to realize its display demand, reduces the cost of whole screen simultaneously.
This chip main lift display screen uniformity coefficient of MBI5024, and tolerate that larger LED luminance difference is to reduce manufacturing cost, simultaneously because current accuracy improves, larger LED luminance error can be tolerated, contribute to manufacturer and reduce LED purchase cost.
This driving circuit also tool has the following advantages:
By a resistance of connecting in red LED lamp set, effectively play the effect of dividing potential drop, reduce the impact to red LED lamp, increase serviceable life, effectively reduce the generation of dead point rate.
The resistance of connecting between 50 Europe, Europe ~ 100, effectively can play the effect of dividing potential drop, does not affect the brightness of normal red LED lamp simultaneously.
Claims (7)
1. a telescopic LED display, it is characterized in that: comprise control system, LED display and LED display telescopic control system, described control system comprises sending card, receiving card, divider, host computer, described LED display comprises the multiple telescopic LED lamp bar module connected successively, the web member that described telescopic LED lamp bar module comprises lamp bar assembly and is connected with lamp bar assembly, described web member comprises two parts of flexible connection, can moving rotary 360 degree between two parts of web member; Described LED display telescopic control system comprises bracing frame, guide rail, drive motor, lifting pulley, support frame as described above fixedly mounts, described guide rail parallel is arranged on bracing frame, described guide rail is connected by lifting pulley with between LED display, and drive motor drives lifting pulley to drive the stretching motion of LED display.
2. telescopic LED display according to claim 1, it is characterized in that: described lamp bar assembly comprises lamp bar shell and PCB assembly, described lamp bar shell is aluminum base material, outside is provided with insulation course, described PCB assembly comprises pcb board, and be arranged at multiple LED in pcb board front and be arranged at the driving circuit at the pcb board back side, described driving circuit comprises driving chip, power circuit, filtering circuit, described LED comprises one group of red LED lamp, one group of green LED lamp, one group of blue led lamp, often organize LED and all connect a driving chip, each signal output pin of driving chip is respectively connected with a LED, wherein, all to connect between red LED lamp with power supply a current-limiting resistance, the input end of described power circuit is connected voltage follower with between external power source output terminal, the input end of voltage follower connects the output terminal of external power source, the output terminal of voltage follower connects the power input of LED drive circuit, described filtering circuit comprises electric source filter circuit and signal filter circuit.
3. telescopic LED display according to claim 2, it is characterized in that: described driving chip comprises 8 or 16 drive singal output pins, control signal input pin, control signal output pin, sheets select input pin, latch signal pin, a clock signal pin, wherein, the control signal input pin of three driving chip, output pin are sequentially connected in series.
4. telescopic LED display according to claim 2, is characterized in that: described electric source filter circuit adopts capacitor filtering, and described signal filter circuit adopts magnetic bead filtering, and described LED is paster LED lamp or plug-in unit LED.
5. telescopic LED display according to claim 4, is characterized in that: described electric capacity comprises three electric capacity be connected in parallel, and the capacitance of each electric capacity is not etc., at least differs an order of magnitude.
6. telescopic LED display according to claim 2, is characterized in that: the resistance of described current-limiting resistance is 50 Europe, Europe ~ 100.
7. telescopic LED display according to claim 2, is characterized in that: described driving chip is MBI5024 or MBI5167 that scientific & technical corporation is built up in Taiwan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510580471.9A CN105161015A (en) | 2015-09-14 | 2015-09-14 | Telescopic LED display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510580471.9A CN105161015A (en) | 2015-09-14 | 2015-09-14 | Telescopic LED display screen |
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| Publication Number | Publication Date |
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| CN105161015A true CN105161015A (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510580471.9A Pending CN105161015A (en) | 2015-09-14 | 2015-09-14 | Telescopic LED display screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845044A (en) * | 2016-05-30 | 2016-08-10 | 无锡昊瑜节能环保设备有限公司 | Environment-friendly LED (Light Emitting Diode) panel |
| CN105845045A (en) * | 2016-05-30 | 2016-08-10 | 无锡昊瑜节能环保设备有限公司 | High-density LED (Light Emitting Diode) panel |
| CN105869535A (en) * | 2016-05-30 | 2016-08-17 | 无锡昊瑜节能环保设备有限公司 | High-density LED display screen heat dissipating system |
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Patent Citations (11)
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| CN201288959Y (en) * | 2008-09-17 | 2009-08-12 | 北京中庆微数字设备开发有限公司 | Foldable screen lamp of integrated single-line chip |
| CN101887660A (en) * | 2010-06-28 | 2010-11-17 | 丁钢 | Deformable electronic display screen |
| CN102314811A (en) * | 2010-06-29 | 2012-01-11 | 上海信茂新技术有限公司 | Lifting-controllable LED louver strip display screen and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105845044A (en) * | 2016-05-30 | 2016-08-10 | 无锡昊瑜节能环保设备有限公司 | Environment-friendly LED (Light Emitting Diode) panel |
| CN105845045A (en) * | 2016-05-30 | 2016-08-10 | 无锡昊瑜节能环保设备有限公司 | High-density LED (Light Emitting Diode) panel |
| CN105869535A (en) * | 2016-05-30 | 2016-08-17 | 无锡昊瑜节能环保设备有限公司 | High-density LED display screen heat dissipating system |
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Application publication date: 20151216 |