Neglected LED products electromagnetic radiation

Whether it is necessary to consider the impact of electromagnetic radiation of LED products on the human body. Of course, low density LED application lighting, LED outdoor display is not necessary to consider so much, but in the LED application of high-density space, the detection of electromagnetic radiation should be an integral part of.

The new version of the CCTV "news broadcast" studio is the high-end atmosphere on the grade, but as LED display technology once, I lost in thought, so many LED screen and LED lighting, the electromagnetic radiation should be how much? Is it harmful to the human body ah? Is not to be detected by electromagnetic radiation? Probably heard the story of the invention process of microwave oven, a radar expert Spencer when debugging a micro-blog generator, found himself in the pocket of chocolate, then he used corn, egg and so do the test, then finally invented the microwave oven, of course, this is a specific band of microwave.

But it can be seen that microwave (electromagnetic radiation) is a kind of power how much energy ah! And we do not discuss the LED light source itself has no electromagnetic radiation (microwave radiation is actually LED our eyes can identify the electromagnetic wave between 380 nm -760 nm band radiation in other reports), but as everyone knows, LED is a solid state semiconductor light source, is a kind of electronic products of low voltage, 220 volts AC electric after decompression and rectification can meet the driving requirements of LED, CCTV "news broadcast" in the hall so a lot of the LED lighting driver how much ah? The electromagnetic radiation generated by each drive may be minimal, but the accumulation of electromagnetic radiation in a limited space will not exceed the carrying capacity of the human body?

Neglected LED products electromagnetic radiation

Once when foreign customers are reflected in the concert, when opening the LED display, wireless Mike will be destroyed, so they do LED testing and certification requirements of EMC display, this is a very troublesome thing, very complex technology, few of the LED display screen after EMC certification. P2.5 LED display high density (i.e., the LED spacing is 2.5 mm per square meter, 160 thousand), such a high density, the refresh rate in accordance with the formula E=hv (as can be imagined, H is Planck's constant, V is the frequency of electromagnetic wave), that is to say the higher the refresh frequency electromagnetic radiation energy is large, LED two a pin as a radiation antenna (160 thousand per square meter of a small antenna, just think of all the terrible) direct long time work in the staff, if the radiation shielding and no reduction is terrible.

In this environment, if the cause of the box effect distortion or interference of intuitive feel, will cause attention, if feel did not affect the sound effects, may be completely ignored, that is the work in which people are unaware of the impact of electromagnetic radiation damage. In the past the traditional lamp because it is using 50 Hz frequency (Western 60 Hz) electricity 220V or 110 volts, so the radiation effect is very little, and now LED lighting products, especially the emergence of a large number of poor LED driver, whether we need to consider the LED product of electromagnetic radiation on the human body.

Of course, low density LED application lighting, LED outdoor display is not necessary to consider so much, but in the LED application of high-density space, the detection of electromagnetic radiation should be an integral part of. Although the impact of electromagnetic waves on the human body is still in dispute, but in the absence of the final conclusion, the controllable electromagnetic radiation, is absolutely inevitable link.