Wen | Jingma
When I was a child in the countryside, the sun did not go down when I came home, I directly put down my school bag in the living room with natural light, I finished my homework, Wrote my homework before eating, and then went out to run wildly, but now primary school students pick up lights to read at night.
When children are writing homework and reading books, many parents will choose to buy a lamp for their children.
Now many table lamps are also called "eye lamps", but in fact, the wrong choice of eye lamps can not only protect the child's eyes, but also hurt the child's vision, and even hurt the child's body.
The China Consumers Association previously conducted corresponding tests on 73 models of eye protection desk lamps, and found that only 12 samples of the 73 samples were found, and the test indicators were good.
The other 61 table lamps have different problems.
Some are insufficient power cords, some are incomplete logos, or the brightness is too low, the color temperature is not qualified, and there is a problem with flicker.
Among them, the sample shading is not good, the illumination is too low or the illumination uniformity is not good, and the color rendering index is low, affecting the correct display of the color of the object, or the flicker performance is problematic, which will hurt the child's vision and cause the child to feel visual fatigue.
Therefore, parents want to buy a lamp for their children, hoping that their children's vision is not so tired when they write homework at night, but buying the wrong one will hurt their children's vision.
Several indicators of eye care lamps are not qualified, which is easy to hurt children's vision, and parents should understand
The first indicator: shading
The substandard shading of the two table lamps will form glare and affect the child's vision. Too bright a child can cause glare when used.
The second indicator: illuminance and uniformity of illuminance
If the illuminance is insufficient or the uniformity is not good, visual fatigue will be formed, which will affect the child's vision health.
Of the 73 samples, 45 had illuminance and did not meet the requirements of Class A. Mainly there are the following kinds, there are some no lack of big brands, the specific can see the following figure.
The third indicator: color temperature
Is the color of the light, now there are some lights can change color, become a warmer color or a cooler color, warm color of the lamp is easy to hypnotize, and cool color of the lamp to refresh, but easy to lead to eye fatigue.
Is the cool color of the lamp according to GB/T 31831-2015 "LED indoor lighting application technical requirements", it is recommended that the temperature of the lamp should not be higher than 4000K.
Among the 73 samples, 24 have a color temperature higher than 4000K, and there are also some big brands.
The fourth indicator: the general color rendering index
The color rendering index refers to the degree to which the color of the object under the light source and the color of the object under the reference standard light source are matched.
Taking natural light as an example, the color rendering index under the sun is 100, and the color rendering index of incandescent lamps is relatively close to 100.
It is recommended that the color rendering index of the light source should not be less than 80, but 9 of the 73 samples tested this time have a color rendering index below 80, which will cause color distortion and also cause visual fatigue. See the figure below for the specific ones.
Fifth indicator: flickering
That is to say, this light source will flash frequently, and the stroboscopic will feel headache and dizziness, and it will also cause visual fatigue.
4 of the 73 samples are problematic, as shown in the figure below.
Therefore, the above in the flicker, color rendering index, color temperature, illuminance and illuminance uniformity, shading problems of the lamp does not protect the eyes, but will hurt the child's vision.
Buying unqualified eye lamps may not only hurt the child's vision, but also may hurt the child's body.
These products will be dumped during the 6 degree stability experiment, that is, placed on the table, may hit the child's body or head, causing physical injury.
Only 9 of the 73 samples are fully qualified, of which 5 are more civilian and cost-effective.
Protecting children's vision, lighting is also very important, these points parents should keep in mind
Use natural light whenever possible
That is, where children write homework, if there is natural light is the best, during the day to let children write homework in natural light, it will be more conducive to protecting vision.
You can buy a lamp with a higher brightness at home
It is not so exciting to let the child directly use the top lamp in the study.
Illuminance and illuminance uniformity reach class A
Choose a table lamp or a ceiling lamp, and choose a product that has achieved A level in illumination and illuminance uniformity.
Children's table lamps should use high color rendering index
The color rendering index is not less than 80.
Avoid giving your child a glossy table top
A glossy tabletop reflects the brightness of the luminaire, which may cause visual fatigue.
So choose the table lamp, do parents know?
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