One, warm light and cold light which is better to buy
If it is used for office, it is best to choose warm light; because warm light is good for the eyes More adaptable and less dazzling.
If it is a table lamp like a bedside lamp, it only needs cold light; because most of the cold light table lamps are relatively cheap, and the probability of using bedside lamps is not large.
The last is the child’s study. It’s better to spend a little money to buy more expensive eye protection desk lamps, but now many eye protection desk lamps are cold light, it is recommended to buy warm light.
Second, which one is less harmful to the eyes, the warm light or the cool white light of the desk lamp
1. Generally speaking, the color temperature requirements of the desk lamp Within 5000k, the color rendering index of the lamp is about 95 or above. As long as this requirement is met, no matter whether it is yellow or white, there is no problem. It all depends on personal preference. As long as the color rendering index is high, the color temperature is within the range.
2. The color temperature of the light source is divided into low color temperature (below 3300K), middle color temperature (3300～5300K) and high color temperature (above 5300K). The light source with low color temperature is yellowish, which belongs to warm color, which is often referred to as warm light, which is suitable for rest. The light source with high color temperature is white, which belongs to the cool color, which is often referred to as white light, which makes people excited. The light source with intermediate color temperature is relatively soft, which is suitable for reading and studying. The lower the color temperature, the warmer the yellow, the softer the reflected light on the writing, and the less irritating to the eyes. At the same time, it can keep our attention.
Third, the purchasing skills of table lamps
One pull, two tune, three shake, four touch.
1. “Pull” means to pull the plug of the power cord out of the socket, and pull the power cord to the outside of the lamp cavity to see if the connection of the power cord is firm. The power cord must not come out of the lamp cavity.
2. “Adjustment” refers to adjusting the various working positions of the desk lamp. When adjusting, no sound can be made. After adjustment, the working position should be easily and reliably locked.
3. “Shake” means to adjust the table lamp to the most unfavorable working position, and then gently shake the plane on which the table lamp is placed, to see if the table lamp is easy to overturn, and the table lamp is not stable enough, it is easy to overturn .
4. “Touch” means that after lighting the lamp for a period of time (2 hours), whether the heat-generating parts that are easily touched during use, such as the lampshade, are hot to prevent accidental burns in future use. It should also be said that on the issue of how to choose a desk lamp, it is necessary to check the light of the desk lamp. In the normal sitting posture of the human body, the light should be kept at the level of the person’s line of sight, and the light should not be directed to the eyes. The range of light exposure should be in the entire work area, and it should not be too scattered or too concentrated. Keep the illumination of the European-style bedroom table lamp light consistent, and it should not be dark and bright or constantly flickering.
