Poor LED lights have blue light hazard

At present, the safety of light environment has once again caused concern: On the one hand, the incidence of myopia in youth has risen sharply; on the other hand, home lighting, work lighting and even outdoor lighting have caused damage to the eye health of adults. Is the lighter the brighter the better? What kind of light environment is good for eye health? Experts pointed out that parents, teachers, and light source manufacturers all have the responsibility to popularize the knowledge of scientific consumption of light sources, and should use non-radioactive, non-stroboscopic, energy-saving and environmentally friendly lamps that are beneficial to the health of students and lighting operators.

When users purchase LED indoor lights, they can't just look at the power of the lamps because the LED lamps are not as bright as possible.

LED lamp prices difficult to choose not to buy less than 20 yuan 5W bulb lamp

It is reported that consumers in the lighting market to buy LED interior lights, often see confusing phenomenon: a well-known brand 4W LED bulb lamp price 40 yuan, and some unknown brand 5W LED bulb lamp It only sells 20 yuan. Which bulb lamp should be selected in the two bulb lights? Many consumers told reporters that they tend to choose brighter LED bulbs.

It is understood that because the higher the color temperature, the higher the luminous efficiency, the brighter the LED interior lights look. However, in actual use, the low color temperature looks more comfortable and the corresponding cost is higher. Taking sunlight as an example, the morning and evening sunlight with a color temperature of between 3000K and 3500K looks soft. At noon, the color temperature of the sun rises to 4000K to 4500K, which is already more dazzling. The color temperature of incandescent and fluorescent lamps reached 6200K.

The reporter learned that light bulbs produced by regular domestic manufacturers will be marked on the packaging color temperature, the common color temperature is 2700k, that is, the color temperature of ordinary incandescent lamps, which is characterized by feeling the light is warm, but not bright enough, suitable for bedroom bedside, wall lamp, etc. Local lighting; 3000k is the closest to the natural light color temperature, is warm, light is warm and bright, suitable for the overall lighting design at home; 5000k above is white, is a cool light, can make people concentrated, suitable for office, learning and other places use.

Experts said: At present, in the lighting market, the general household LED indoor lamp power is between 3W ~ 7W, 5W bulb lamp market sales price is generally around 50 yuan, if less than 20 yuan, then the LED indoor lamp Quality is certainly a problem, not only can not play a role in protecting vision, and the life of the light source will be greatly reduced. In addition, when consumers purchase LED interior lights, they can't just look at the power of the lamps, because the LED lamps are not as bright as possible.

Inferior quality LED lights have Blu-ray harm, they are cheap and they want to buy big brands.

From incandescent lamps to energy-saving lamps to LED lights. In recent years, society has paid more attention to energy-saving lighting products than ever before. In this regard, some medical professionals and electric light source experts have pointed out that many LED lamps have serious problems of blue light overflow. Over time, the eye's retina will be subject to irreversible damage.

Is LED lighting really damaging to vision? Associate Professor Zhang Shanduan, deputy director of the Institute of Electric Light Sources at Fudan University, told the reporter: “The principle of white LEDs is that blue LED chips excite the white light formed after the conversion of yellow phosphors. Blu-ray damage refers to the fact that if the brightness of the light source is between 400 and 500 nanometers, if the brightness is too high, Eyes that look directly at the light source for a long period of time may cause photochemical damage to the retina. The degree of blue light damage depends on the amount of blue light that the human eye accumulates in the light.”

"If you buy a qualified lamp and use it properly, the LED lamp is no more dangerous than the traditional lamp." Industry sources pointed out that at present, there are more than 3,000 domestic LED lamp manufacturing enterprises, China's national standard "light and lamp system of light In the "Biosafety," a clear definition is made on the hazards of blue light and the calculation method for quantification, and it is pointed out that there is no difference between LED lighting products and other light sources, and it falls within the safe range specified by the limits of exposure radiography.