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Choose enough wattage to see if the brightness is satisfactory, no flicker (good for eyesight), high display index (good for people and things under the waiting level), high power factor (power saving), good heat dissipation (long life).
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The light should not be too strong and not too concentrated. It is best to be able to adjust the brightness.
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To be able to dim the light, too dark and too bright will hurt the eyes. Only those that can be dimmed can be suited.
Be sure to choose a full-spectrum LED eye-protecting desk lamp. The full-spectrum technology of ultraviolet excitation is the closest LED technology to natural light today. The eye-protecting desk lamp made of sunlike series light source is the standard configuration of the learning desk lamp.
High color rendering + saturation sunlike light source is not a thing!
Large light-emitting surface + side light-emitting. Ensure that it is not dazzling even if it is fully illuminated.
No strobe (don't believe that the phone doesn't flicker, it's not strobe, the current mobile phone is corrected by software) The color temperature is 4000K, Don't exceed 5000K
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At present, there are more and more families using LED lights, because LED lights have greater advantages than ordinary lamps, and they will also be safer and more environmentally friendly. So how to choose LED lights? Next, let me take you to take a look.
1. First of all, we should choose LED lights with high light efficiency. This type of LED light is very efficient, so the brightness provided is also a little higher than that of ordinary bulbs.
2. In addition, it is also necessary to choose LED lamps with high environmental protection. If it is an environmentally friendly LED lamp, which does not contain mercury, it is very safe to use, will not output harmful light sources, and it is relatively safe to emit light.
3. The bulbs of LED lamps are mainly divided into dimmable and non-dimmable types, which can be selected in combination with the actual situation when choosing, and are generally marked on the outside of the box.
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1. When choosing LED lights, it is recommended to choose some warm colors, because the light of this color lamp is similar to the human body, giving people a sense of warmth and being very comfortable. The cold series of LED lights is more suitable for installation in the kitchen, warehouse or basement, because it must have a certain brightness of light in these places, so as to facilitate people to find things or guess work.
2. When choosing LED bulbs, you must carefully check the ratio of the lumen value and power consumption value of the lamp, so that you can choose a product with high brightness but low power consumption.
3. When buying LED lights, its color rendering index is generally CRI, and it is an abbreviation in English on the color rendering index. From the appearance of the lamp it looks very delicate, but in fact it is very simple, all use the color of the display light source. The specific layout of the LED must be in harmony with your home decoration style and lighting color, and the brother type is perfect.
4. LED bulbs must meet the safety standards during use, if the LED bulb meets the energy standards, it means that it is a qualified lamp product, because the energy it has very high requirements for the brightness and color of the lamp.
5. Because LED bulbs are more expensive than traditional bulbs, you must choose a qualified manufacturer when buying LED bulbs, so as to bring a certain guarantee to the lamps, and the warranty period of a qualified LED bulb is generally three to five years.
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The country is paying more and more attention to lighting energy conservation and environmental protection issues, and has been vigorously promoting the use of LED lamps. Obviously, as long as the cost of LED lights decreases with the continuous improvement of LED technology. Energy-saving lamps and incandescent lamps will inevitably be replaced by LED lamps.
Next, PCHOUSE will introduce you to how to buy LED lights.
1. Color temperatureMost LED light sources are divided into cold colors and warm colors, if it is used in the bedroom, try to choose LED lamps with warm colors to create a warm atmosphere in the bedroom. If it is a living room or corridor, the light source of the LED lamps with a cold series will be better. 2. Color rendering index lighting CRI is also known as color rendering index, about color rendering index actually refers to the color of LED lighting, there are many kinds, so you can match different colors according to your own decoration style when choosing.
The collocation of CRI is also directly determined whether the presentation of the style is complete and whether it can be matched with the decoration style. 3. Lumens Lumens This is a very familiar ratio, Lumens It refers to the illumination index of the lamp, if the Lumens is higher, its light source is stronger. So is it not the higher the lumens, the better, in fact, this is not the case, as long as it can meet the general lighting, the higher the lumens but the higher the energy consumption, and the long-term use of this will ignore the eyes.
4. Recognize the big brand LED lamps is a kind of lamps that we are more common in the market, but there are a lot of counterfeit and bad products on the market, and many consumers have no knowledge at all or are greedy for cheap and directly buy bad LED lamps, which will directly affect the life of the lamps, so we try to choose some well-known brand lamps and lanterns, which also brings us safety guarantees.
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1. Low blue light, long-term reading under harmful blue light can lead to myopia, computer syndrome, cataract and even blindness! Doctors remind: "blue light" is more serious damage to children's eyeballs!
Generally speaking, if the blue light is exceeded, it is considered to be high blue light. So when buying a table lamp, be sure to choose a table lamp with low blue light.
2. No strobe, strobe is extremely easy to cause visual fatigue, dizziness, eye discomfort, and in severe cases, it may cause headaches, vision loss and other problems. The most direct way to test whether there is a strobe is to turn on the mobile phone camera and face the light source, if there is no flashing dark line on the mobile phone screen, it means that there is no stroboscopy, and the dark line flows happily, so the strobe is more serious.
3. The light is soft, and the best light is 1-2 hours after sunrise, and the color temperature is about 4000-5000K. The light in this color temperature range is comfortable and soft, making it ideal for reading and writing. Generally speaking, if you want to choose a slightly higher color temperature within this range of reading, you need to choose a lower color temperature for writing.
4. Illuminance and illumination range, lamp intensity detection: the illumination at the center of the light source at 400mm from the height of the reading and writing desktop is the best visual light environment when it is 750-1500lx. Generally speaking, purely from the illuminance value, the table lamp below 500lx is not qualified, and its illumination brightness is low, so it cannot be used as reading and writing lighting.
C certification, national certification requirements: the learning desk lamp must pass the national compulsory 3C certification, and within the validity period.
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