|How to choose the right LED display for my intention?|
Selecting the appropriate type of LED displays is important moment for success of your project. If the LED display is disappointing for your clients, they will not pay. If you use unnecessarily expensive technologies (for example too high resolution) you will extend the period of return on your investment.
Based on placement:
indoor / outdoor
The difference between the two types is mainly in mechanical design and the amount of the achieved brightness. Outdoor LED displays have usually larger pixel pitch (10-30mm), indoor smaller (3-10mm). Outdoor LED displays must withstand all weather conditions, temperature changes and so on. The brightness of these LED displays must be high (min.5000cd/m2), so the image is visible even in direct sunlight..
Indoor LED displays does not resist such influences and may not serve brightness so high, usually 2000cd/m2. Beware of cases where choice between the use of indoor and outdoor LED screen is not so clear. For example: LED display located in the business center, but in the glass part of the building where the lighting conditions are the same as outside. Then the brightness of the indoor LED display would not be sufficient. Or the LED displays in multimedia dices on the ice rink. Brightness is sufficient here, but environmental conditions are rather as outside.
Low temperatures and especially high humidity, dangerous water condensation – comparable with rain or even worse. In this case, it is necessary to provide indoor LED display by cover, which should be at least IP43, if not outdoor IP65.
By viewing distance - choice of pixel pitch
Viewing distance of LED displays vary by location and use. We use several so-called pitch clusters. As long as the LED display is located in a distance of several tens of meters, there is no longer benefit of high density color points in order to compensate higher financial costs of the display. If you use the LED display that would artificially show the finest details, you will not be able to see them from long distance anyway.
By location - service access
Different locations mean different options of service access. If the LED display is on the roof, rear service access is better.. If the LED display is on the wall, the better service access is from the front. Service access from the right side means fast service and lower cost of the supporting structure and the rental of equipment required to repair. Last but not least is the good look of installation of the LED display. Why having thin LED display, when you need at least another 700 mm space behind for service access? Then you are going to have clumsy box on the wall with a depth of 850 mm, when the screen is only 150 mm deep.
Fixed and rent installations
Depending on the use of LED displays there are modules for either fixed installation with wiring within modules, or in the form of rent with external cabling and cage structures for quick assembly.
Choosing a place for a LED display
Choosing a place for installation of LED display is one of the most important decisions and it will determine, how successful will your project be. In other words, a good place will sell anything, bad place will not save even the best LED display. In any case, the success of any media depends mainly on its content, the creativity and skills of the owner.
If you have a suitable place for a LED display, you will need rental contract and construction permission. The biggest obstacle is usually the opinion of the department of care of historical monuments and department of transport (police). We can arrange for you documents of a technical nature (statics, manufacturing documentation of supporting structures, etc.) or advise you how to get them. Finally you must have a suitable location for the control PC with an internet connection.
What should I know about the LED display operations?
LED display lifespan
Most manufacturers of LEDs provides a lifespan of 100,000 hours. After 100,000 hours at 20 mA continuous current and temperature 25° C decreases the brightness of the LEDs to 50%. However, such conditions almost never occur on the screen. Electric current is lower (mean value), but the temperature fluctuates. High temperatures can significantly shorten the life of LED chip. Such a long lifetime can be achieved only with high quality LEDs.
You should be given two data - max power (MAX) and operational power (AVG). To maximum power consumption must be dimensioned supply and its protection. It is the value given by sum of the maximum power consumption of installed power supplies. During operation, even with maximum possible brightness setting, max power will not be achieved. Operational consumption is between 25 and 35 percent of the maximum consumption.