We often see the gray sky in the morning, in fact, is a thing called haze to shrouded. It is estimated that many people do not know what is haze, its main constituent material is composed of sulfur dioxide, nitrogen oxides and respirable particulate matter mixed formation, the first two are gaseous pollutants, they are combined with the mist, so that the sky instantly change Be grayed out. In fact, fog is a non-toxic and harmless natural phenomenon, and the formation of haze is mainly suspended in the air a large number of particles and meteorological conditions of the combined effect of the results. Haze often accompanied by Health, haze at the same time, water vapor, static wind, inversion, condensation and other conditions are indispensable.
Haze in the composition of toxins not only seriously endangering people's health, but also on the outdoor LED electronic display operation will also have a great impact. In fact, we can be haze divided into fog and haze, because they both on the display of the main hazards are not the same:
The first: fog on the outdoor display of the hazards.
The fog is made up of water vapor in the air. That is, the air humidity is relatively large, will lead to LED display by the wet. Humidity caused by the display of the PCB board, power supply, power lines and other devices easily oxidized corrosion, or even short circuit, resulting in failure.
The second: haze on the outdoor display of the hazards.
Haze is a collection of dust, dust, and other tiny particles in the air, where the dust particles suspended in the air are the core of haze. If the long-term under the influence of haze, a variety of small dust in the air from the ventilation holes into the device, for fans and other equipment will speed up wear and even damage, the dust will fall on the surface of the control device inside the display, so not only reduce the display Screen cooling and insulation performance, but also accelerate the aging of the display, affecting the normal life.
So, how can the display can be long in the haze weather to withstand the test, which requires users and engineers in the procurement and maintenance of the time more attention:
1, the first user in the procurement process, we must see whether the display screen to achieve the use of the environment required dust level. In terms of dust, the international standard for the IP0X-IP6X, is a design to prevent foreign invasion of the design level, if installed in the dust and foggy weather in the northern region, its front and back protection level must be to IP65, That is to say must be completely dust-proof structure, that is, in the state of water is sealed.
2, must pay attention to the LED display PCB board is done anti-corrosion treatment, such as the surface coating three anti-paint, etc .; power and power lines are selected for high-quality accessories; and see the most vulnerable to corrosion of the screen body welding, whether Done rust treatment.
3, in the routine maintenance process, we must regularly dust, to avoid moisture in the dust to absorb moisture in the air lead to short circuit, which led to PCB board and electronic components of mildew.