1. LED voltage is low and very safe, misleading people.
The technical personnel of many enterprises do not have a deep and comprehensive understanding of the electrical safety of LED lighting products and driving power supplies. As a result, the electrical safety of many designed and produced LED lighting products completely depends on the safety of the driving power supply, while many supporting The electrical isolation and insulation of the LED drive power supply do not meet the standard requirements. In addition, there is a large amount of publicity that LED is safe at low voltage, which will mislead people to touch the product frequently, resulting in the risk of electric shock being higher than the people subconsciously knowing that its high voltage is dangerous. And don’t dare to touch traditional lighting products casually.
2. LED blue light hazards
The blue light spectrum of blue chip-type white LEDs is more concentrated in the harmful spectrum than fluorescent lamps, including energy-saving lamps, resulting in a spectrum that is about twice as harmful as fluorescent lamps, and the light emitting point is small and the brightness is high. This aspect makes blue light more harmful than other The lights stand out more. However, in theory and long-term product safety certification testing, less than 5% of the most stringent LED desk lamps exceed the RG1 risk requirements, and these lamps only need to be marked with the words “Do not look directly at the light source at close range for a long time” in a prominent position. “Mark and mark the safer distance critical point to remind users that it meets the standard requirements and can be sold and used without any problems. This is much safer than looking directly at the sun for a short period of time. There is no problem with LED lights with frosted covers. And it is not only LEDs that have photobiological safety issues. In fact, some traditional light sources, especially early metal halide lamps, may cause more serious UV damage or even blue light damage.
3. Strobe problem
It should be said that LED lighting products can be the least flicker-free and the most stable (for example, many on the market are equipped with pure DC power supply driving power supplies). Poorly made products can also have serious stroboscopic problems (for example, those without driving power, the AC grid directly supplies power to LED strings or COB-LEDs), but this is also related to the stroboscopic problem of inductively ballasted straight tube fluorescent lamps. Pretty much the same. This does not depend on the LED light source, but on the power supply method and driving power supply that matches it. The same is true for the stroboscopic effects of traditional light source lighting products.
4. Color incompatibility problem
Many people have pointed out that the LED spectrum is discontinuous and not full spectrum, so it feels uncomfortable. But in fact, the LED spectrum is much more continuous and complete than the spectrum of energy-saving lamps that people have used in large quantities for a long time (see the spectrum comparison chart of the two below). However, no one has long said that they are not adaptable or uncomfortable to energy-saving lamps.