Table lamp is a household appliance used for lighting in people's lives. Generally, there are two types, one is column type and the other is clip type. Its function is to concentrate light in a small area, which is convenient for work and study. The bulbs used for desk lamps are generally incandescent lamps, energy-saving bulbs and eye-protection desk lamps popular in the market, and some of them can be bought.
Emergency function
That is, it has its own power supply, which is used for lighting emergency in case of power failure.
Function introduction
Desk lamps are classified according to their functions: reading desk lamps, decorative desk lamps, companion desk lamps and portable desk lamps.
Reading desk lamp, simple and light in shape, refers to a desk lamp specially used for reading and writing. Generally, this desk lamp can adjust the height of the lamp post, the direction and brightness of lighting, and is mainly used for lighting reading. Decorative desk lamps are luxurious in appearance, diverse in materials and styles and complex in structure. They are used to decorate the space effect, and the decoration function is as important as the lighting function.
The table lamp in the living room has gone far beyond the value of the table lamp itself, and it has become a rare work of art. Under the concept of light decoration and heavy decoration, the decorative function of the table lamp is more obvious.
Desk lamps are not only used for reading and decoration. The latest technology is like a robot, which can move, dance, automatically adjust the light, play music, clock, video, touch and other functions, especially the ceramic desk lamp has collection value.
Learn what kind of desk lamp to use?
1, brand
The choice of eye protection desk lamp still depends on the brand. The quality of good brand eye protection lamps is guaranteed, and the quality has passed the inspection. Famous brand products recognized by the lighting industry, such as Opal, Philips, the global leader of quality life, and Osram, a German lighting expert, are all very good. Pay more attention to the product parameters when buying eye protection lamps to ensure that these parameters meet the standards.
Step 2 be smart
Eye protection desk lamps can't adjust the brightness of light, and all eye protection lamps that can adjust the brightness have no eye protection function. It is more expensive than ordinary incandescent lamps in price. The color temperature value of eye protection lamp tube determines the softness of light. Too high or too low is not good, and 4000K to 5200K is more suitable. Among them, the 4000K to 4500K eye protection lamps are slightly red and soft, which is suitable for primary school students. The color temperature ranges from 4500K to 5200K, which is suitable for middle school students and above.
3, lighting color
White light is too strong, reading and writing in this light will feel reflective or dazzling, resulting in visual fatigue and decreased vision, so whether it is eye protection or other lighting, it is best to choose yellow light. Reading and writing in yellow light will feel soft and comfortable, while reading in white light will hurt your eyes for a long time.
Learn how to choose a desk lamp.
1. Selection of light source power: Many materials claim that the brightness of incandescent lamps with 25-40 watts is the most suitable, but it is not suitable. According to the actual measurement, when the center of the light source is 40cm away from the reading and writing table, the illumination of the 25-watt incandescent lamp is only 220Lx, and that of the 40-watt incandescent lamp is only 350Lx, which can not meet the requirements of the minimum standard of 750Lx for the best visual light environment. Therefore, students should not use 25-40 watt incandescent lamps in their studies, especially the eyesight protection of students' long-term close reading homework, which may have hidden dangers.
2. Simple test of clarity and color reproduction: put the palm of your hand up and place it 30 cm under the lamp. If it is observed that the palm lines are clear and the fingers on the palm are rose-colored, it means that the light color is clear and the color reproducibility is good; On the contrary, the lamp has poor light.
3. Adopt warm white light source: the color temperature is 3000-3300K K K. From the visual and physiological point of view, warm white light source is most in line with the visual and physiological needs of human eyes;
4. Detection of desk lamp illumination: the illumination from the center of the light source to the height of 40cm of the reading and writing table is 750- 1000Lx, which is the best visual light environment;
5. National certification requirements: the study desk lamp must pass the national compulsory 3C certification and be within the validity period;
6. The study desk lamp should have a certain height. At this time, the illumination area is large and the illumination is uniform. The table lamp bracket should also have a certain length to facilitate expansion and contraction. Suitable for computer operation, painting, calligraphy and other purposes.
7. Intuitive desk lamp: The light should not be direct or refracted to the eyes, and glare should be strictly eliminated. The simple test method is as follows: when the eye height is 40cm away from the reading and writing desktop and 60cm away from the center of the desk lamp light source, you should not see the direct light or refracted light in the lampshade;