With the rapid development of society, the use of LED displays is becoming more and more common, but the waterproof function of LED displays is also a problem we are concerned about, especially for outdoor LED displays. As far as we know, the technical engineer of Maipu Guangcai LED display manufacturer will simply sort out the relevant knowledge of LED display waterproofing for you.
The protection level of the LED display is generally displayed as IPXY, for example: IP56, X represents the level of the LED display against dust and foreign objects intrusion, Y represents the airtightness of the LED display against moisture and water intrusion, the larger the number, the more The higher the protection level, the meaning of the numbers X and Y will be discussed below.
X represents the meaning of the digital code:
0 : no protection
1: Protection against solid exosomes of 50mm diameter and larger
2: Protection against solid foreign bodies of 12.5mm diameter and larger
3: Protection against solid exosomes of 2.5mm diameter and larger
4: Protection against solid foreign bodies of 1.0mm diameter and larger
5: Prevent harmful dust accumulation (it is impossible to completely prevent the entry of dust, but the amount of dust entering will not cause damage to the equipment)
6: Completely prevent dust from entering (dust should not enter the cabinet at a low pressure of 20 mbar)
Y represents the meaning of the digital code
0 : no protection
1: Water drop protection (water droplets falling vertically should not cause damage)
2: When the casing is tilted to 15 degrees, it is protected from water droplets, and the water droplets falling vertically should not cause damage
3: Protection against splashed water (water or rain from a 60-degree corner to the shell has no effect)
4: Protective water spray (liquid splashed to the shell from any direction has no damage effect)
5: Protective water jets (from every direction to the cabinet to shoot water without any harm)
6: Protection against strong water jets (the strong jets of water aimed at the cabinet from every direction will not cause any damage)
7: Can withstand water immersion in a short time (1m)
8: Soak in water for a long time under certain pressure
In Table 1 of the protection level of the LED display shell, we can see that the indoor and outdoor classification of the waterproof level of the LED display shell is different. The outdoor waterproof level is generally higher than that of the indoor, because the outdoor LED display is more rainy or needs to be waterproof than the indoor LED display.
Taking an example to introduce the waterproof parameters of the LED display screen may be easier for everyone to understand: For example, the protection level of the display screen is IP54, IP is the marked letter, the number 5 is the first marked number, and 4 is the second marked number. The first marked number indicates the contact protection and foreign object protection level, and the second marked number indicates the waterproof protection level. It should be noted that the second characteristic number after IP is 6 and below. As the number becomes larger, the test is gradually stricter. That is to say, the LED display screen marked as IPX6 can pass the tests of IPX5, IPX4, IPX3, IPX2, IPX1, and IPX0 at the same time. The test of the second characteristic number after IP is 7 or 8, and the test types of 6 and below are two types. That is to say, the identification of IPX7 or the identification of IPX8 does not mean that it meets the requirements of IPX6 and IPX5 at the same time. At the same time, LED displays that meet the requirements of IPX7 and IPX6 can be identified as IPX7/IPX6.
Here we will focus on the classification of waterproof grades of outdoor LED displays.
The waterproof rating of the outdoor LED full-color display is IP65. 6 is to prevent objects and dust from entering the screen, and 5 is to prevent water from entering the screen under the condition of spraying. Of course, it is no problem for heavy rain. Outdoor waterproof LED display simple box is generally marked with front waterproof IP65, because the simple box has no back door, this design is convenient for the machine to dissipate heat. After the whole screen is installed, it needs to be made of aluminum-plastic board and waterproof glue Waterproof edging treatment, the waterproof effect also reaches IP65, and now most of the outdoor full-color LED displays use simple cabinets. The conventional LED outdoor in-line light full-color screen is composed of an outdoor module and a closed box structure after processing to form an outdoor waterproof display box, and the waterproof display box is assembled into an outdoor full-color screen. Therefore, the display box is the basic unit that composes the display body. Adopt box structure:
1. It is convenient for scheduling, aging and on-site maintenance;
2. It is convenient for packaging and transportation;
3. On-site installation and disassembly are convenient. A display module is installed in front of the display box, and a display drive circuit board is fixed inside the box. The switching power supply is installed on the back cover of the box. An exhaust fan is also installed on the back cover of the box, and the shutters are punched. The box body is sprayed with plastic on the inner and outer surfaces, which has the functions of anti-corrosion, moisture-proof, anti-oxidation, flame retardant, etc., which provides a guarantee for the safety of the display body.
As far as the structure of the display screen is concerned,
First of all, the module should be an outdoor waterproof module.
The back of the second module should be painted with three anti-paint,
Third, the box should be a waterproof box with good airtightness. You can do a waterproof test and sprinkle water on the surface of the display screen.
After a number of tests, the IP protection level of the outdoor LED display waterproof box must reach IP65 in order to achieve true waterproofing.
