RGB Led Light Strip is a kind of the Multi-Color Changeable Led Strip , it need to work with the RGB controller to realize RGB color changing.
RGB strips are capable of producing a wide range of color and when connected to an RGB controller ,allow you to select options such as the static color ,brightness or the color changing operating modes.
All of these options will allow a huge degree of control over what and how your LED's display their colors.
The RGB color changing strip be able to produce multi RGB colors ,but only can mix to get pure white color . If you prefer to get RGB colors and Warm White ( or other kelvin White ) ,you can use the RGBW / RGBWW LED Strips.
RGB LED Lights Strip can be cut in every 3 leds (there is the marks on the PCB )
After being cutted ,the RGB LED Light Strip can be reconnected in two ways
* By soldering wires to the marked solder points.
* By using the Quick connectors.
The quick connector can be generally fall into three categories :
CC (Connector to Connector)
CWC ( Connector to Wire to Connector )
CW ( Connector to Wire )
* The connect drawing for CC type quick connectors
* The connect drawing for CWC type quick connectors
* The connect drawing for CW type quick connectors
Notice: This quick connector is not water-proof !
so if you want to put the reconnected strip in outdoor environment , you need reconnect the strips as the follow process shows
*
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LightingWill is established since 2009. Professional LED manufacture, specially in LED lighting products and accessories. The objective of Lightingwill is to offer superior quality LED items to our clients, and enjoy a bright and comfortable life.
The recessed lights can be integrated into furniture or walls to create a warm and friendly atmosphere. Perfect for home use, office, store, super market, bars, cafe, exhibition, halls, museum hotel, restaurant, decoration lighting and other lighting.
We offer high quality LED products of our own and partners directly from manufacturer.
Contact info:
HUAKE LIMITED
Web: http://www.lightingwill.com
Email: info@lightingwill.com
Tel: +86-755-83066884
Fax: +86-755-83068542
Add: 1#, ChaXi SanWei Industrial Zone, GuShu, XiXiang, BaoAn,ShenZhen, GuangDong, 518126,China.
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3D Holographic Display Instructions
For
iOS: Search DSeeLab in App store.
For Android: Click https://www.dseelab.com/resource/software to download.
For PC:https://www.dseelab.com/resource/software to download.
These only fit for LL-HA-50-WF-DS-X &LL-HA-50H-WFC-DS-X LL-HA-65-WF-DS-X & LL-HA-65X-WFC-DS-X & LL-HA-100-WFC-DS-X
Remark : Not fit for LL-HA-43-SDWF-FT-X & LL-HA-65X-SWF-ZB-X & LL-HA-100-SWF-ZB-X.
to connect to it.
You can also check our operation guide videos:
PC software operation video: https://www.youtube.com/watch?v=Jbd8PMn0xL8&t=25s
Cellphone (IOS and Android) APP software operation video: https://www.youtube.com/watch?v=0cSN3FYyWyM&t=19s
Remote operation video: https://www.youtube.com/watch?v=rmK0mDoyKec
]]>2: We cooperate with UPS, DHL, FedEx, TNT, USPS, HongKongPost to ensuring that your products will be shipped quickly and safely.
3: We provide a comprehensive after-sales service, check Reviews to see customer's comments on us.
4: We provide a flexible method of payment, such as credit card payment, Paypal online payment, T/T via bank transfer(HSBC) and Western Union
Beware of fake online stroe (scam site) who cribbing our photos, description etc, we knew most of them are only few guys who copy our site, then buy garbage products from local market ship out to customer, the quality and services can not be ensured.
So, when you order online, if their site have same photos or same descriptions or when you checkout, if they only accept PAYPAL and Western Union, and if their PAYPAL's account are not compay account, then you need think about it. if you need, please connect us, we will email you a scam site list.
]]>As much as we google online for some info sometimes, it doesn't mean it would be equivalent with your effort like the words typing over the searching column, and most of description is written off the info statistics, hence, we get some trouble of finding the answer. It's obviously wanting to build up the entity of LED display system at first, like we all know signal of image or video carried by the digital medium and is sending out to the sending card as the first receiver, and actually it is the first receiving card instead of its name described here, because we need know this card will finish a job of signal collecting-up and encryption an so on, however, it's not difficult for us to get two things - how many of interface types will be available for input signal transform and what are numbers of them, seemingly the two factors will allow you to get if this card is supporting the sync, in addition, you will know your audio and video will be delivered at the same time rather than disorder of playing.
Counting to the next, you will access the real receiving card, loading ability, what sort of interface or ports it has, what kind of signal it will receive and recognize the signal, the other factor of card itself will be what sort of interface it has, and maximum LED module groups it can support, resolution ability, of course, the image quality or video presenting, like all general thing we know, the display quality will not be presented fine if the card is loaded too much, you can never expect that your production can work at peak all the time.
Controller, Video Processor, Video Production Console, these integrated devices are designed with high-end ICs and diversity of ports either related to input or output, apparently it will be capable of supporting a large program of LED display, that's why some special interfaces or rare types of ports for huge LED display screen are necessary to keep this system running well, and support more accessing ways for them to assemble as one part of the entire system, you have to know each point well before you want to build up the LED display screen, beware of roles they are acting and some critical parameters about card, processor, console and so on, as well as compatibility they are grouping up to display your ads to customer on the screen eventually.
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Step Two: Measuring how many feet of LED strip you need
You may have your LED strip light sent to you in a reel (16 feet) or by the foot, depending on the quantity ordered. Decide how much flexible LED strip lighting you will need for your project. Since the LED strip can only be cut every third LED, you may have to go slightly over or under your desired specification.
Step Three: How to cut the LED strip
As you can see below, the flexible strip light can only be cut along the designated lines. Take a sharp pair of scissors and cut along the line.
Step Four: Pay attention to positive and negative markings
IMPORTANT: Notice the positive and negative sides of the LED strip light. This is important for the next few steps. Sometimes when you cut the LED strip light , things can get mixed around.
Step Five: Introduction to the solderless connector
Each Solderless Connector has two sides. To insure you have the correct side up, make sure the wider of the white sides face up. This is the top.
BE GENTLE and pull the locking device out away from the wires. Do not pull on the wires to do so, as the solderless connector is fragile.
Step Six: Attaching the solderless connector to the LED strip
IMPORTANT: Color does not always matter! Make sure you follow the positive side of the flex strip down through the solderless connector wire to the power supply. Red/black can either mean (+) or (-) depending on what side you have hooked the connector to.
Step Seven: Securing the tray to the LED light
In the example below, if we were to attach the Solderless Connector to the other side of the flexible strip light, the red would be negative and the black positive.
Next, GENTLY secure the locking tray back in place, connecting the terminals of the LED flexible strip light to the connector. Be gentle and make sure the mounting tray is securely closed, or the lights will not work.
Step Eight: Connecting the LED strip to power
You are now ready to plug in your LED Flexible strip light to the LED power supply.
This can be done a few ways.
1. Wire Nuts
2. Butt Splices
3. Terminal blocks
4. DC Coaxial Connectors with or without screw terminals
Match the positive and negative markings with the positive and negative wires from the power supply. Make sure the power is off when you do this.
The answer is DON'T think it too complicated and plan big at first.
First, to have a quick lesson on LED light display screen, let you have a clear picture.
There is 7 factors you need to consider for making a LED light display screen.
* LEDs
* LED Display Modules
* Cabinet
* Control System ( controller box, sending card & receiving card)
* Power Supply
* Data Cable & Power Cable
* Other device/tool need for local assembly
1. The LED Components
The LED light display screen has indoor and outdoor application. Beside the waterproof IP grade, the brightness required for Indoor and Outdoor application are different.
The outdoor LED light display screen need higher brightness than indoor LED light display screen, for it's disclosed under sunshine.
So for the LED components used, according to the brightness level are divided into for regular brightness (800-1000 nits) indoor LEDs and high brightness (4000 - 6000 nits) outdoor LEDs.
And the SIZE of the LEDs limit Pixel Pitch can make for indoor and outdoor LED light display screen.
The smallest indoor LED 0808 allow to make the smallest pixel pitch P1.0 Indoor LED display screen, while there are P1.25, P1.56, P1.667, P1.875, P1.923, P2, P2.5, P3, P4, P5, P6.
The smallest outdoor LED 1921 allow to make the smallest pixel pitch P3.0 Outdoor LED display screen, while there are P4, P5, P6,P6.7, P8, P10.
2. LED Display Modules
For the Modules, points to consider:
* Indoor LED modules and Outdoor LED modules :
Indoor LED Display Modules made with regular brightness LED, there are P1.0, P1.25, P1.56, P1.667, P1.875, P1.923, P2, P2.5, P3, P4, P5, P6 LED Display Screen Modules.
while Outdoor LED Display Modules made with high brightness LED, there are P3.0, P4, P5, P6,P6.7, P8, P10 LED Display Screen Modules.
* The Size of the LED Modules
You need to consider and well-known for the sizes of the LED display screen modules, to calculate the QTY. of LED display screen modules need for LED display screen / wall in different sizes.
And to know for a the same size LED display screen, different Pixel Pitch LED modules used, the PRICES vary quite a lot.
Below is an example to show you. CLICK HERE TO KNOW WHY THERE ARE SO BIG DIFFERENCE.
3. The Cabinets
Two options: Die-casting Aluminum Cabinet and Standard Iron Sheet Simple Cabinet.
1) Die-casting Aluminum Cabinet: Need mold, is extruded to form via Molding Machine, and it has features as " High Quality Aluminum Alloy with Good Dissipation, High Brightness, High Grey Scale, Seamless Assembly, Silent Design with Fan-less Design".
2) Iron Sheet Standard Cabinet: Simple made, and can custom-make to any sizes. Note: customized size need to match with the LED display screen modules. Features: Light Weight, Independent disassembly box, High Brightness, High Grey Scale, Cabinet Size and Shape can be Customized Freely.
4. Control System (controller box, sending card & receiving card)
* The brands of controller/card depends on the customer preferences. If no special requirement, we will recommend the most cost-efficient model to our clients.
* The controlling pixel pitch qty. of those devices.
Each model of the controller/card has its max loading pixel pitch quantity (LED quantity). We learn before that the different pixel pitch LED display modules vary a lot.
How many control card need for a LED display screen depends on the Pixel Density and the control card's spec.
The control card's Loading Capacity should bigger than the Pixel Density of your LED display screen.
Below picture show the Pixel Density for different LED Display Modules.
Below picture shows the Loading Capacity of different control card.
5. Power Supply
For the installation space is narrow, the power supply used for LED display screen should be small and in low profile.
QTY. need for different project, we can give your calculation.
* CE approved or UL approved
* Famous brand or common brand
6. Data Cable & Power Cable
We will give you the QTY. of each cable need, once get known of your projects.
7. Other device/tool need for local assembly
* Tools: Screw Driver, Multi-meter
* Aging test mounting bracket for LED display screen modules, we can give you solution for what we use in our own factory.
* Finished LED Display Screen Cabinet AgingTest Frame , we can give you solution for what we use in our own factory.
* Training ( assembly operator and software knowledge, we can provide the training).
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First, let me have a short look for different SMD LED the component. Below are some of the LEDs that are commonly used in LED Strip Lights.
The popular spec. for them we used in our strips:
SMD3528 (rated 0.06W/LED)
SMD2835 (rated 0.2W/LED)
SMD5050 (rated 0.2W/LED)
SMD5730/5630 (rated 0.5W/LED)
SMD3014 (rated 0.1W/LED)
SMD4014 (rated 0.2W/LED)
SMD3030 (rated 1W/LED)
SMD5050 RGB (rated 0.2W/LED)
SMD5050 RGBW (rated 0.2W/LED)
SMD5050 Dual White (rated 0.2W/LED)
The popular LED Flexible Strip models:
Strip Model | LED Density | Rated Power | Available Colors | PCB Width | Light Emitting | CCT | Lumen Output per Meter |
SMD3528-150 | 30LED/Meter | 2.4W/Meter | White, Red, Green, Blue, Yellow, | 8mm | Top-Emitting | 2700K-6500K | 100-150LM |
Pink, Purple, Orange,IR, UV | |||||||
SMD3528-300 | 60LED/Meter | 4.8W/Meter | White, Red, Green, Blue, Yellow, | 6mm/8mm | Top Emitting | 2700K-6500K | 200-300LM |
Pink, Purple, Orange,IR, UV | |||||||
SMD3528-600 | 120LED/Meter | 9.6W/Meter | White, Red, Green, Blue, Yellow, | 5mm/8mm | Top Emitting | 2700K-6500K | 400-600LM |
Pink, Purple,Orange, IR, UV | |||||||
SMD3528-1200 | 240LED/Meter | 19.2W/Meter | White, Red, Green, Blue, Yellow, | 15mm | Top Emitting | 2700K-6500K | 800-1200LM |
Pink, Purple,Orange, IR, UV | |||||||
SMD2835-300 | 60LED/Meter | 12W/Meter | White, Red, Green, Blue, Yellow, | 8mm | Top Emitting | 2700K-6500K | 1000-1200LM |
Pink, Purple,Orange, IR, UV | |||||||
SMD2835-600 | 120LED/Meter | 18W/Meter | White, Red, Green, Blue, Yellow, | 8mm | Top Emitting | 2700K-6500K | 2000-2400LM |
Pink, Purple, Orange,IR, UV | |||||||
SMD5050-150 | 30LED/Meter | 7.2W/Meter | White, Red, Green, Blue, Yellow, Pink, Purple, | 10mm | Top Emitting | 2700K-6500K | 450-550LM |
Orange, Orange,IR, UV, RGB, RGBW, Dual White | |||||||
SMD5050-300 | 60LED/Meter | 14.4W/Meter | White, Red, Green, Blue, Yellow, Pink, Purple, | 10mm | Top Emitting | 2700K-6500K | 900-1100LM |
Orange,IR, UV, RGB, RGBW, Dual White | |||||||
SMD5050-600 | 120LED/Meter | 28.8W/Meter | White, Red, Green, Blue, Yellow, Pink, Purple, | 15mm | Top Emitting | 2700K-6500K | 1800-2200LM |
Orange,IR, UV, RGB, RGBW, Dual White | |||||||
SMD5630-300 | 60LED/Meter | 12W/Meter | White, Red, Green, Blue, Yellow, Pink, Purple | 10mm | Top Emitting | 2700K-6500K | 1000-1200LM |
SMD3014-300 | 60LED/Meter | 12W/Meter | White, Red, Green, Blue, Yellow, Pink, Purple | 4mm/8mm | Top Emitting / | 2700K-6500K | 1000-1200LM |
Side Emitting | |||||||
SMD3014-600 | 120LED/Meter | 18W/Meter | White, Red, Green, Blue, Yellow, Pink, Purple | 4mm/8mm | Top Emitting / | 2700K-6500K | 2000-2400LM |
Side Emitting |
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2, LED display module brightness level When it comes to brightness, we think of the word high brightness, this parameter is a parameter that people pay more attention to. Brightness is a complicated problem in LEDs. The brightness we usually say in LED modules is usually the intensity and transparency of the LEDs, which is usually the sum of the degrees associated with each module.
3, the LED display module illumination angle of view The illumination angle of the LED module without lens is mainly determined by the LED lamp bead. The different illumination angles of the LED lamp bead are also different. Generally, the illumination angle of the LED lamp bead provided by the manufacturer is the LED mode. The angle of the group.
4, LED display module working temperature LED display module normal working temperature is usually between -18 ° C and 58 ° C, if the requirements are relatively high, special treatment, such as air conditioning or exhaust fan.
5, LED display module power supply It is a very important parameter in the LED display module, the current 12V low voltage module is more common. When connecting the power supply and the control system, be sure to check the correctness of the voltage value before powering on, otherwise the LED module will be damaged.
LED bar screen is led light sticking on acrylic board, it needs to attach to glass, so led lamp heat dissipation is hindered. The new transparent LED screen adopts GOB manufacturing technology, breaking the defect of LED bar screen, making the transparent LED screen realize the characteristics of real moisture-proof, waterproof, dust-proof and UV-resistant so that the transparent LED screen can be used in any harsh outdoor environment.
The conventional LED screen |
Transparent LED Screen Display |
LL-HA-50-WF-DS-X &LL-HA-50H-WFC-DS-X LL-HA-65-WF-DS-X & LL-HA-65X-WFC-DS-X & LL-HA-100-WFC-DS-X please download the app from https://www.dseelab.com/resource/software
Remark : Not fit for LL-HA-43-SDWF-FT-X & LL-HA-65X-SWF-ZB-X & LL-HA-100-SWF-ZB-X.
42cm is the SD card version. It is downloading the required material directly to the SD card and then use the controller to control the playback.
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2, dispensing: it is to drop the glue to the fixed position of the PCB, its main role is to fix the components to the PCB. The equipment used is a dispenser, located at the forefront of the SMT line or behind the inspection equipment.
3. Mounting: Its function is to accurately mount the surface-assembled components to the fixed position of the PCB. The equipment used is a placement machine located behind the screen printing machine in the SMT production line.
4. Curing: The function is to melt the patch glue, so that the surface-assembled components and the PCB board are firmly bonded together. The equipment used is a curing oven located behind the placement machine in the SMT line.
5, SPI: After the printing machine, for the quality inspection of solder printing and verification and control of the printing process.
6. Reflow soldering: Its function is to melt the solder paste, so that the surface-assembled components and the PCB board are firmly bonded together. The equipment used is a reflow oven located behind the placement machine in the SMT line.
7. Cleaning: The function is to remove the welding residue (such as flux) which is harmful to the human body on the assembled PCB board. The equipment used is a washing machine, the position can be fixed, it can be online or not.
8. Inspection: The function is to test the quality and assembly quality of the assembled PCB. The equipment used includes a magnifying glass, a microscope, an on-line tester (ICT), a flying probe tester, an automatic optical inspection (AOI), an X-RAY inspection system, and a function tester. The position can be configured in a suitable place on the production line according to the needs of the inspection.
9, repair: its role is to detect the failure of the PCB board rework. The tools used are soldering irons, rework stations, and the like. Configure anywhere in the production line.
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According to the actual area of the product and the length and brightness of the fan blade, it is divided into many styles and specifications, but the essence is the same. The creative materials and contents to be played are stored through different paths and transmission methods. In the storage space of the machine itself. Through the software to process the video and image dot matrix to achieve the desired holographic effect
]]>Patented GOB technology can effectively protect the LED packaging unit, which is enough to resist extreme harsh use environment, realize real waterproof, dust-proof, anti-impact, anti-UV, and can avoid the phenomenon of light drops.
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1、Plug lights: Insert the different colors of the diode into the PCB plate hole, forming the LED pixel point. Often said that the pixel spacing is the distance between the two lamps, resolution is the amount of light in per unit area. Note: A. the direction of light, positive and negative pole not inserted opposite B. Don't plug the light less insert, wrong insertion C. check the diode itself has no problem D. QC detection
2、Solder: A: machine over tin; B: Check out the lights to see if there is omission C: Cutting angle D: put down the middle of the individual light (easy to welded the behind drive plate)
3、Installation the LED module(1) the installation of the plastic frame; A. cutting the board B. Will do a good job of the lamp panel and frame locked C. Lay the screws
(2) The driver board A. SMT patches B. Drive cable joint; C: Power contacts Weld; D: welding the head of Capacitor; E: welding the U line and V line.
Generally a pixel can be rendered as a unit of displaying pictures or videos in front of viewers. or actually the smallest element for picture, if we need more pictures, that means more original representations will be necessary part, all of these small dots will make up the final display, and you must be in doubt that why you are going to define a pixel as a picture, because the pixel can be one color at one time, and also is too small to be seen individually, and next we are going to give you the second question.
How many pixels of a image will be able to be seen clearly rather than in foggy dots? Each pixel can be determined by the number of colors in which all bits of dots blending together to represent it, for example, for various aspects, you need to know how many of pixels to be displayed in a image as we called pixel density, at 16-bit color depth, you may be able to see 'Led-Lights' not in a smooth, clear picture, what else if we set at 32-bit color depth? Unless you have your pixel density setting at a higher level, you will not get the best quality at 16-bit approach.
The more bits per pixel (bpp) you have described for a picture, the more excellent representation it can be able to produce. Learn about the pixel basics, to know the array of pixels make up of LED display, pixel pitch, lighting brightness or in poor brightness, optimal viewing distance, for such issues the explanation of what a pixel is and maximizing your comfort of viewing. Anyway, the article about the pixel is not described in details as you can expect, and we are going to make some fix at a time and we hope it may be able to tell some points already, some pics are quoted from web, if violated to your property, contact with us directly!
]]>There must always be content on LED screens which is useful in some way, arouses curiosity, and is fresh and updated. When content is updated constantly, people will tend to look at the screens more often. If the outdoor screen runs only advertisements, the target audience will quickly tire of it and may cease looking at the screen. It is a good idea to incorporate stock-exchange updates, the news, sports and the weather forecast into the programming, so that there is constantly some fresh content to look at. Even displaying updated temperature, a fact of the day or quote of the day will get people curious about what the next display is going to be about. In all probability, if your content is strong enough or thought-proving enough, people will begin commenting about your content and will be looking forward to the next update. This serves the purpose of advertising, which is to have as many people as possible look at your screen.
Another important point is to pay attention to is design. To begin with, ensure that you have a good advertisement designer who knows what he is doing. He should have some experience at designing, and should know instinctively what will work on digital signage. You should also encourage your designer to look at the advertisements as they appear on your screen, so that she will have a good idea about how the viewer will perceive it.
Duration of the advertisement is another factor to be borne in mind. Ideally, advertisements should not be so long that people will see the beginning but not the end as they move past. For outdoor screens, duration should be limited to a maximum of 10 to 15 seconds. Advertisements being broadcast indoors, where people may have more time to view them may extend a little bit more than this.
Finally, ensure that the format of the letters used is big. Each letter being a quarter of the screen size is most probably a good idea. Don’t make the mistake of thinking that what looks good on your computer will look good on your LED screen.
]]>We can see LED display everywhere,but what is the determined factor for its price,do you think of ot before youbuying one? there are 3 industry terms for LED signs you need to understand.
The individual LEDs are are grouped together in what is known as a 'pixel'. The number of LEDs in each pixel varies. There could be one LED or there could be 25 LEDs in one pixel.
The major factor which determines the number of LEDs in a pixel is the 'pitch' of the pixels in the LED sign. The pitch is the distance from the center of one pixel to the center of the next pixel. The pitch determines how crisp the image will be.
If there are 2 LED signs sitting side by side and each one is the same height and width but they have different pitches, the LED sign with the smaller, tighter pitch, will have more pixels and thus a better resolution.
Selecting the right pitch when you are purchasing an LED sign may save you money as well as getting you the appropriate resolution for your particular application so make sure you read the section on choosing the right size LED sign.
The third term is 'matrix'. The matrix is made up of the number of pixel high and the number of pixels wide of an LED sign is. The matrix is what determines the physical size of the sign. If an LED sign is 24 pixels tall and 96 pixels wide, the matrix is 24x96.
With monochrome led signs and with an indoor led sign, the matrix determines how many lines of text you can put on the sign as well as how many characters will fit on each line. With programmable color LED signs the matrix determines how much total space you have. A quick word or caution, having the correct height to width ratio is CRITICAL in color LED signs, you should always consult an LED sign professional for help determining the best matrix for a color LED sign.
So to sum it up...
The first question you need to ask yourself is do I need a color LED sign or Outdoor Electronic Monochrome LED Displays. Most sign salesmen will tell you that a color LED sign is more effective. I'm not one of those guys. Color can be more effective for some applications but not all applications. The only thing you can say about color LED Displays that is true for every application is that it is more expensive than monochrome LED signs.
So how do you know if the additional cost is justified? Ask yourself this question: "Can my product or service be sold with a picture?".
If you sell insurance there are probably no pictures that will help you sell your product, words will sell your product.
If you sell cars you can definately sell your product with pictures.
If you answered "No" then properly sized Monochrome Electronic LED Signs are probably the way to go. A properly sized monochrome LED sign is just as, if not more, effective as a color LED sign if picures and video are not helpful. You will also save a bundle in aquiring the sign.
If you answered yes, you should consider a color LED sign. They do cost more but if images can help you sell, the additional cost might be justified. Talk to an LED sign professional for help determining if a color LED sign is the way to go.
Properly answering this requires a careful review of the location for the sign as well as the specific application. If you talk to a sign salesperson who does not inspect your property and ask questions about your application, be very wary, they are probably more interested in making a sale than in making sure you get the right LED sign.
There are several factors that must be considered. For instance:
And the list goes on.
Of all the items listed above, content is the most involved. If you are getting a monochrome LED sign you need to know what you want to say AND the most effective way to say it. Then you must consider the traffic patterns. The speed limit and viewing distance will affect the the viewing time. Your towns sign ordinance can also have an impact here.
Once you have all that information (actually you need more information than that but those are the basics) you can determine your matrix (scroll back up for a review of what the matrix is).
Now you need to determine the correct pitch. A smaller/tighter pitch will make the minimum character size smaller.
So, if your LED sign will be viewed from a long distance by people in cars travelling 45mph you will need a larger character size to make sure the traffic can read it. That means you will need a larger pitch.
If your sign will be close to the traffic and the speed limit is 25mph you can use a small character size, and smaller pitch, and your message will still be readable.
Determining the matrix and the pitch is even more complicated if you are getting a color LED sign because you must carefully consider the application as well as the aspect ratio.
As a rule of thumb, with color LED Displays, the smaller the matrix and the larger the pitch, the grainier the picture on the LED sign will be.
Viewing distance also plays a role in how high of a resolution you need. If the LED sign will be viewed from a long distance you do not need as much fine detail. The closer the viewer is to the LED sign, the more detail you need. You must carefully consider what kind of content you will putting on the LED sign and the viewing distance.
If all of this seems complicated and possibly a bit overwhelming, don't worry, that is what we are here for. We have a process for going over all the details of your location and application. Then, and only then, we will make a recommendation to you.
Remember, if your LED sign is too big, you wasted money. If your LED Display is too small, you wasted money. Only a properly sized LED sign will give you the most bang for your buck (also known as the best ROI).
The true cost of an LED Display is in the number of individual LEDs in the sign. The size of the box housing the LEDs isn't really important when it comes to pricing, in fact, that box is relatively inexpensive. The circuit boards which control the LED sign aren't the key factor in pricing, like the box they are relatively inexpensive. The key factor is the number of LEDs in the sign.
If you are considering acquiring an LED sign that is 32 pixels high and 96 pixels long and you are looking at two different brands which appear to be almost identical, even the pricing is close, which LED sign is the better bargain? There is one key piece of information you need to start to answer that question: How many LEDs are in each pixel?
Remember, pixels are groups or clusters of individual LEDs. The LED sign in this example has 3072 PIXELS (32 pixels high x 96 pixels wide). If one brand has 8 LEDs in each pixel than you are getting 24,576 LEDs. If the other brand only has 4 LEDs per pixel you are getting 12,288 LEDs.
LED density is a good indicator for comparing LED display performance. Just like your car's engine, more cylinders generally mean more power. More LEDs per pixel generally mean higher brightness and better performance. A low brightness, unreadable LED display will not help you increase your sales because it's less likely your customers will notice and read what you have to say.
The answer is probably getting pretty clear. More LEDs equals more brightness, more clarity, more attention, more customers.
The number of LEDs per pixel is also important because of degradation. Generally speaking, an LED diode will lose about 20% of its initial brightness after the first 2000 hours of use (about 3 months). After that, the LED's brightness degrades very slowly until it dies at the estimated lifetime of 100,000 hours (about 11 years). When shopping for an LED sign, it is important to keep in mind that the manufacturer's claimed display brightness will drop about 20% after 2 to 3 months of operation.
Another consideration is the viewing angle of the sign. LEDs can put out a single, narrow beam of light like a flashlight, or they can put out a wide beam across a room like a light bulb. LEDs put out about the same amount of light no matter what type they are - but the "high-beam" LEDs with a narrow angle focus more light into one small spot, whereas the "wide angle" LEDs spread their light across the horizon. So, if you were to stand in front of a sign made from "high-beam" LEDs with narrow viewing angles, you would see an extremely bright sign, as long as you stood directly in front of it, but the minute you walked away from the front of the sign, where the "high beam" is focused, you would see nothing but black.
With wide viewing angle LEDs, the image is visible in consistent brightness and uniform colors throughout the entire viewing range of the display. A quality LED sign will have 140� of viewing angle which maintains the highest color accuracy and extends reading times.
There are 3 ways to build LED signs.
The first is to solder the LEDs directly to the circuits boards AND put a plexiglass face over the LED sign face to weatherproof it. There are several drawbacks to this method. First the plexiglass shield will cause glare from the sun which will make your sign harder to read during the day. Second, beacuse the LEDs are soldered to the circuit board. If one LED goes out you sign has to be turned off, opened up, and an entire board must be replaced. This will cause a quilting effect in your sign where one section is brighter then the surrounding areas.
The second, and next best method, is to solder the LEDs directly to the circuit board but seal the entire face of the sign, without a plexiglass face shield. This eliminates the sun glare problem but it still has all the other drawbacks of the first method.
The third, and best, method is to use individually sealed pixels. With this method each pixel can be removed individually without turning off and opening the sign. This eliminates all the drawbacks of the other two methods.
The biggest thing to watch out for is sign sales people. I am not saying they are dishonest, most of them are very honest, hard working people. Most of them also lack the experience and/or knowledge to properly size and program an LED sign. They are expert tradesmen who really know how to build and install signs but LED signs have special issues that require special expertise.
Make sure that whoever you are dealing with is an expert at properly sizing and programming LED signs.
If they do not take the time to roll up their sleeves and really dig into your application and circumstances you need to be very wary of them. An LED sign is not a one size fits all, one phone call, purchase. They require careful planning and consideration. Do yourself a favor and talk to a professional.
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It is the smallest unit that can be independently controlled on the screen. PIXEL is an abbreviation of pictureelement. On a three-color screen, pixels consist of three parts: red, green, and basket. Each part consists of one or several leds. Theoretically, they are individually adjusted. The brightness of red, green and blue can be expressed in any color.
Pitch
The distance between the centers of adjacent pixels. The smaller the distance, the shorter the viewing distance.
Resolution
Usually used for digital display devices, representing the total number of pixels, generally written in a wide X high form, such as 800X600.
Viewing angle
The maximum brightness that can be seen when the observer is facing, when the viewer moves to the left or right, the brightness is reduced, and when the brightness is reduced to half of the maximum brightness, the angle at this time is added to the The sum of the angles obtained by moving in the opposite direction is called the horizontal viewing angle and the vertical viewing angle is measured in the same manner. The perspective manufacturers will give parameters.
Brightness
Brightness is the most important parameter in any display device. The main unit of brightness is called candela, which is represented by CD. The brightness of a single LED is usually millicarandelas, MCD, ie one thousandth of a CD, and the brightness of one square meter of LEDs is added together to obtain the brightness per unit area. NITS says 1 NITS=1 CD/m2
Visual distance
For various LED displays, the best viewing distance should be the smallest distance that the human eye can't distinguish between pixels. This distance is about 3400 times the distance between points. The viewing distance between TV and computer is usually less than this requirement, but the acceptable distance can not be less than 1700 times the distance between points.
Picture update rate/refresh rate
The rate at which the screen image is updated, usually expressed in Hertz (Hz), is different from the frame rate.
Frame rate
The number of image frames displayed per second on the screen, usually depends on the input signal (25fpsforPAL, 30fpsforNTSC)
Field frequency
Half frame of PAL and NTSC, because PAL and NTSC are interlaced scanning, only reveal the half frame picture every refresh.
Pure green and true green
In the past 30 years, various colors of LEDs have been successively developed. First, red, yellow, yellow-green, blue LEDs and pure green LEDs were successively invented by Nichia engineers in the 1990s. It is now possible to manufacture LED full-color screens. The video LED screen must use pure green. If you use yellow green, the color is definitely not true. If the number of green tubes in a pixel is more than the number of red and blue tubes, it must be a yellow-green tube, because yellow The brightness of the green is not enough, you must use more than one, but the yellow-green LED is cheap.
Color temperature
The brightness of red, green and blue must be balanced to accurately restore the true color. In other words, the white color of the LED must be white instead of pink. If red, green and blue are all at the highest brightness, the mixed colors are usually not white. In order to get white (usually called 6500K color temperature), one or two of the red, green and blue lights must be turned down. To get the correct white color, you must Measured repeatedly to adjust the brightness, this process called white balance, LED display price.
Grayscale
The number of colors that an LED screen can represent depends on the RGB three-color gray scale. In a standard full-color screen, it is 256 levels of gray. For stadium full-color LED systems, 256 gray levels are not enough to accurately recover Restore color. Also known as color depth, refers to the number of different brightness, red, green and blue have their own grayscale, in a full-color system is generally 256 levels of gray, can produce 256X256X256 = 16,777,216 kinds of colors, called 24-bit color in PC, It is called an 8-bit system in LED display systems.
GAMMA correction
This is a way to reduce the number of gray scales by transforming functions to produce a color and contrast that is closer to the real environment. The actual color of full-color screens is subject to many restrictions. At night, the brightness of the screen body must be reduced. The color will be reduced, therefore, the digital RGB display color is certainly less than the 16M color, in order to solve this problem, you need a higher level of gray, 1Bill color system (red, green and blue 1024 color) can be more realistic color , because from the 256 gray scale expanded to 1024, greatly enriched the number of colors that can be expressed.
Virtual Pixel Technology
Also known as a shared pixel or a dynamic pixel, a pixel that is 4 times the physical pixel is rapidly sent to the physical pixel by parity and even-odd rows. The effect is equivalent to reducing the pitch by half, and the cost is basically the same as the conventional method. Compared to the basic increase, but it can do 4 times the original resolution.
Consistency
The quality of the entire picture largely depends on the consistency of the LED. The problem of consistency is the inherent problem of LEDs when LEDs are produced. Their brightness, viewing angle, and other characteristics are actually not uniform. These parameters are distributed in a certain range. The better the manufacturer's process control, the smaller this range, and the use of LEDs provided by high-quality manufacturers can reduce the workload of debugging. The sensitivity of the human eye to color and brightness is quite high, and the difference between LEDs is easily noticeable, especially in high-brightness display systems. Designers must adopt various techniques to eliminate this difference. , increase consistency, LED display manufacturers.
Color difference
LED large-screen combination of red, green and blue to produce a variety of colors, but these three colors are made of different materials, the viewing angle is different, the spectrum distribution of different LED are changed, these differences can be observed It is color difference. When observing the LED at a certain angle, its color changes, and the ability of the human eye to judge the color of the real picture (such as a movie picture) is better than the picture produced by the observation computer.
The amount of photosynthetic activity under each light spectrum
Blue light (430nm-450nm)
Those wavelengths encourage vegetative growth and are essential in lighting for seedlings and young plants during the vegetative stage of their growth cycle, especially when “stretching” must be reduced or eliminated. It also stimulates the production of secondary pigments which can enhance colors and is known to also stimulate Terpene (i.e. fragrance) production.
Red light (640nm-680nm)
Red light affects phytochrome reversibility and is the most important for flowering and fruiting regulation. These wavelengths encourage stem growth, flowering and fruit production, and chlorophyll production.
The 660nm wavelength has a very strong photosynthetic action and also exhibits the highest action on red-absorbing phytochrome regulated germination, flowering and other processes. Most effective for light cycle extension or night interruption to induce flowering of long-day plants or to prevent flowering of short-day plants.
Green light (500nm-550nm)
Most green light is reflected off the plant and plays a much smaller role in plant growth. However, there are some important aspects of light in this range so a certain amount of light in this spectrum range is beneficial. Green light is sometimes used as a tool for eliciting specific plant responses such as stomatal control, phototropism, photomorphogenic growth and environmental signaling. When combined with blue, red and far-red wavelengths, green light completes a comprehensive spectral treatment for understanding plant physiological activity. The function of green light is less well understood than the other spectrums, and there are only certain species of plants that require green light for normal growth. It’s effects appear to be very strain specific.
Photosynthesis isn't the only light-driven process in plants. Secondary metabolites (compounds) are created in a process called photomorphogenesis, many based on colors of light not used directly for photosynthesis.
Ultraviolet light (10nm-400nm)
Near-UV light is a very important contributor for plant colors, tastes and aromas。
Studies show that 385 nm UV light promotes the accumulation of phenolic compounds, enhances antioxidant activity of plant extracts, but does not have any significant effect on growth processes. UVB has also been demonstrated to elevate THC levels in Cannabis*
Far red (730nm)
Although the 730nm wavelength is outside the photosynthetically active range, it has the strongest action on the far-red absorbing form of phytochrome, converting it back to the red-absorbing form. It becomes necessary for plants requiring relatively low values of the phytochrome photoequilibrium to flower. Can be used at the end of each light cycle to promote flowering in short-day plants such as Cannabis.
Also, a higher ratio of far-red to red than found in sunlight can trigger the shade stretch response- where a plant when sensing it is shaded based on an elevated ratio of far-red to red- will stretch to try to elevate its canopy above its competitors.
--Above information are from network.
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