To say artificial lighting, we must first understand the basic concepts of lighting:
Luminous flux: The radiant energy that human eyes can feel. The sum of the product of the radiated energy for each band and the relative viewing rate for that band. The unit symbol is lm.
Illumination: The flux density of a light projected onto a surface, symbolized by lx.
The luminous flux of a 40W incandescent lamp is about 340 lm; the luminous flux of a 40W fluorescent lamp is about 1700-1900 lm.
The basic requirements of indoor lighting:
1, according to general lighting and special circumstances to set two groups of programs. For example, the study uses a small lamp and a brighter desk lamp.
2, according to special circumstances to set a group of programs: For example, the study only set a headlight.
The above first set of options is a better choice. First, according to different circumstances, choose different illumination, help to protect vision, to avoid long-term too strong or too weak light damage to vision. On the other hand, it helps save electricity and saves money.
Second, think about how to choose the light bulb
1, the type of light bulb
Today's home bulbs are mainly divided into incandescent lamps and energy-saving lamps. The incandescent lamp is operated by the principle of conductive heating of tungsten or other metal wire, and the lamp color is yellow (sun color). Energy-saving lamps operate on the principle of gas discharge. Its name is called self-ballasted fluorescent. In addition to white (cold light), there is now yellow (warm light). Generally speaking, under the same wattage, an energy-saving lamp can save 80% energy compared with incandescent lamps, extend its average life expectancy by 8 times, and heat radiation is only 20%. Under non-strict conditions, a five-watt energy saving light can be regarded as an incandescent lamp equal to 25 watts. A seven-watt energy-saving light equates to about 40 watts, and a nine watts equates to about 60 watts.
However, at present, some products on the market have high prices and the quality is not very good. If you choose improperly, there are often problems with energy saving and no money saving.
Another thing to note is that general energy-saving lamps cannot be dimmed, so only ordinary switches can be used. Don't use clock-type dimmer switches to control the energy-saving lamps. However, it has been reported that energy-saving lamps that can be dimmed have been developed abroad, but the author did not find such energy-saving light bulbs in the market in the draft fashion.
2, the style of lamps
1) First buy lamps according to their own style. For example, a modern style, it is appropriate to use a combination of stainless steel and frosted glass lamps. The traditional style of Europe and the United States, it is appropriate to use some such as rococo lines, coated with metal toner lamps.
2) Where possible, lamps in the living room, dining room and bedroom are of the same design style. According to the author's experience, this is possible. Another alternative is to keep the living room and dining room in the same style while the bedroom lighting uses another style.
3) Waterproof ceiling lamps can be used for toilets and kitchen lights. Generally, they do not need to pay too much attention to the style. The most important thing is the practicality.
Third, do not think that buying lamps is particularly simple
The purchase of lamps and lanterns is very spiritual. Before going to purchase, we must fully perform the neck warm-up exercise. According to the method of radio gymnastics that we learned in the past, we have to turn our heads. If you don't buy it, you must be bitter. To buy lights to see more, it is best to choose lighting professional market. Many stores only operate the styles of specific manufacturers, so it is the only way to see more. The lamps and lanterns specialized market because the style concentrates, therefore you are more arduous to save the province spirit, and the price also has a comparison.
Decoration construction knowledge
Marine Finished Polyester Yarn
Dnv Cert Polyester Yarn,Abs Cert Polyester Yarn,Marine Finish Polyester Yarn,Polyester Yarn For Marine Ropes
ZHEJIANG GUXIANDAO POLYESTER DOPE DYED YARN CO., LTD , https://www.htpolyesteryarn.com