Outdoor LED billboards have the advantages of good stability, low power consumption, and wide radiation range. They are the most suitable product for outdoor information dissemination. Basically, common LED display screens include advertising screens, text screens, graphic screens, etc., which also constitute urban life and emit brightness.
So what details should be paid attention to when building such high-quality LED advertisements outdoors? I believe that these contents are the topics that everyone pays the most attention to, especially for technical construction personnel. Knowing how to build and maintain outdoor advertising screens will greatly promote Business advertisement and information dissemination. Specifically, the outdoor billboard LED electronic display installation has four links: field survey, equipment construction, installation, and debugging.
1. Field survey
This means that before installation of some outdoor LED display screens, it should be tested according to the specific environment, topography, luminous radiation range, brightness acceptance ability and other parameters. In order to ensure the smooth installation of the billboard, it is required that the The command staff implement a unified hoisting plan to ensure that the equipment can be used normally and stably.
2. LED equipment construction
When building some outdoor LED billboards, it is necessary to distinguish between wall advertising screens, hanging advertising screens and rooftop advertising screens. In actual installation, cranes and hoists should be used for lifting in sections according to the distance and height, while ensuring that the above personnel cooperate with each other. There is a better installation and use process for the LED advertising screens for high-altitude operations.
3. Debugging of luminous radiation range
Next, we need to conduct specific radiation range detection. Due to the different radiation ranges, the viewing angle of the LED display will be different. The outdoor LED display must be fixed and installed according to the field acceptance and the usual viewing angle to ensure that each angle is far away. From afar, you can see normal, balanced images and subtitle information.
Four, follow-up inspection and maintenance
Subsequent testing includes many areas, such as LED display waterproofing, heat dissipation layer, LED indicator waterproof coating, rain-shielding area on the display, cooling air on both sides, power supply lines, etc. These basic parts and components constitute the entire stability For the good graphic LED display, the later technical maintenance requires a unified management and maintenance for these parts. When the product is rusted, unstable, or damaged, it needs to be replaced in time to ensure the safe use of the entire display.
Generally speaking, outdoor LED billboards adopt high-tech backplane heat dissipation and dot matrix light source for unified management, which is more conducive to the use of display screens. These basic outdoor advertising screen installation steps also illustrate the installation of LED display screens. Mastering these important links will enable us to use the advertising display screen more smoothly and quickly, and give play to its excellent characteristics of information dissemination.
LED is the abbreviation of light emitting diode, abbreviated as LED. The LED display screen (LED panEL) is a display screen composed of LED device arrays through a certain control method to display text, text, graphics, images, animation, market information and other information, as well as TV and video signals. As a new generation of display media, it has been widely used in exhibition centers, trading centers, auction centers, financial centers, information centers, securities, telecommunications, taxation, power supply, customs, courts, firefighting, stations, airports, docks, talent markets, etc. Public places in the business hall.
1. Display performance
According to the display performance, LED displays are divided into text LED displays, graphic LED displays, computer video LED displays, TV video LED displays, and market LED displays. Market LED displays generally include LED displays for securities, interest rates, futures and other purposes.
2. Display color
LED display screens are divided into single-color LED display (including pseudo-color LED display), dual-color LED display and full-color (three-color) LED display according to their display colors. According to the gray scale, it can be divided into 16, 32, 64, 128, 256 gray scale LED display screens and so on.
Monochromatic screens are generally composed of red luminescent materials. The dual-color screen is generally composed of red and yellow-green luminescent materials. The three primary color screens are divided into full color (full color), composed of red, yellow-green (wavelength 570nm), and blue; true color (nature color), composed of red, pure green (wavelength 525nm), and blue.
3. Basic luminous points
Among non-market LED displays, indoor LED displays can be divided into Φ3.0mm (62500 dots/m2), Φ3.7mm (44100 dots/m2), Φ4.8mm (27800 dots/m2) according to the LED single point diameter used. ), Φ5mm (17200 dots/m2), Φ8mm (10000 dots/m2) and other displays;
Outdoor LED display screens can be divided into Φ8mm (10000 dots/m2), Φ12mm (3906 dots/m2), Φ16mm (2500 dots/m2), Φ26mm (1024 dots/m2), etc. according to the pixel diameter used. The market information LED display can be divided into 2.0cm (0.8inch), 2.5cm (1.0inch), 3.0cm (1.2inch), 4.6cmm (1.8inch), 5.8cm (2.3inch), 7.6cm(3inch) etc.
Four, use environment
LED display screens are divided into indoor LED display screens, semi-outdoor LED display screens, and outdoor LED display screens according to their usage environment.
The indoor screen area generally ranges from less than 1 square meter to more than ten square meters, with high dot density. It is used in non-direct sunlight or lighting environments. The viewing distance is a few meters away. The screen does not have the ability to seal and waterproof.
The semi-outdoor screen is located between the outdoor and the indoor, and has a high luminous brightness. It can be used outdoors in non-direct sunlight. The screen has a certain seal, usually under the eaves or in the window.
The outdoor screen area generally ranges from a few square meters to tens or even hundreds of square meters, the dot density is relatively sparse (mostly 1000-10000 dots per square meter), and the luminous brightness is 3000-6000cd/ square meter (different orientations, different brightness requirements), which can be used in sunlight When used under direct sunlight, the viewing distance is tens of meters away, and the screen has good wind, rain and lightning protection capabilities.
Five, installation method Built-in, stepped, hoisted, wall-mounted, front maintenance, and hinged.
Six, synchronous and asynchronous
The synchronization method means that the working mode of the LED display is basically the same as that of the computer monitor. It maps the image on the computer monitor in real time with an update rate of at least 30 fields/sec. It usually has the ability to display multi-gray colors. It can achieve the effect of multimedia advertising.
Asynchronous mode means that the LED screen has the ability to store and automatically play. The edited text and non-grayscale pictures on the PC are transferred to the LED screen through the serial port or other network interface, and then the LED screen is automatically played offline, generally not too gray Degree display capability, mainly used to display text information, can be connected to multiple screens.
Seven, the main function of the capture card
LED display screen is a special display medium, it cannot directly accept computer data, it needs a series of transformations. The function of the capture card is to capture the display data of a high-speed computer (or multimedia display card), convert it, and transmit it to the main controller at down frequency.
Post time: Dec-07-2020