The color temperature of warm light is below 3300K, which is similar to incandescent lamp. It has more red components and can give people a warm, healthy and comfortable feeling. Suitable for families, houses, dormitories, hotels and other places or places with low temperature.
Also known as neutral color, its color temperature is between 3300 K and 5300 K. Because of the soft light, neutral color makes people feel happy, comfortable and serene. Suitable for shops, hospitals, offices, restaurants, restaurants, waiting rooms and other places.
Also known as daylight color, its color temperature is above 5300K, and the light source is close to natural light, which makes people concentrate. Suitable for offices, conference rooms, classrooms, studios, design rooms, library reading rooms, exhibition windows and other places.
Extended data
Advantages of fluorescent lamps:
1, high luminous efficiency: the luminous efficiency of fluorescent lamps is about 55-80 lm/W, while that of LEDs is above 100 lm/w ... and it may be more than three times in the future.
2. High efficiency of lamps: The efficiency of lamps mainly refers to effective light efficiency. Because fluorescent lamps emit light at 360 degrees, white lampshades are generally used to reflect a considerable part of the backlight back. Generally speaking, the efficiency of fluorescent lamps is only about 70%. The LED fluorescent lamp emits light of 120 degrees. In addition, the light emitting angle can be adjusted as required.
3, high power efficiency:
Because all lamps except incandescent lamps need special power supply, the efficiency of power supply also affects the efficiency of the whole lamp.
Let's take Philips' 36WT8 fluorescent lamp as an example. Its rated output power is 36W, but due to the connection of inductive ballast, the measured input power is 42.4W, that is, the inductance loss of iron core is 6.4W, and the efficiency is reduced to 85%. Most domestic iron cores consume more than 10W, and the power factor is lower than 0.5 12.
The power efficiency of LED is usually as high as 90%, and a 18W LED fluorescent lamp only needs 20W input power. The power factor can also reach above 0.9.
Compared with fluorescent lamps, fluorescent lamps can save more than half of electricity, which means that a 18 watt LED fluorescent lamp can replace a 36 watt fluorescent lamp.
4. Long life: The life of the carefully designed LED fluorescent lamp can reach 50,000 hours. The life of fluorescent lamps is usually only 5000 hours (some domestic fluorescent lamps have a life of only 300 hours). The difference between them is nearly 10 times.
5. Mercury-free and pollution-free: Fluorescent lamps contain mercury. 36 mm fluorescent lamp contains 25-45 mg of mercury, and 26 mm (T8) contains 20 mg of mercury. Fluorescent lamps are all made of fragile glass. Once the glass is broken, the mercury in it will immediately volatilize into the air, which can instantly make the mercury concentration in the surrounding air reach 10-20mg/m3, exceeding the national standard 1000-2000 times.
Mercury is a toxic substance, which is very harmful to human body. When the mercury vapor reaches 0.04-3 mg, people will be chronically poisoned in February-March; When it reaches 1.2-8.5mg, it will induce acute mercury poisoning; If it reaches 20mg, it will directly lead to animal death.
However, 1mg of mercury is enough to pollute 5454.5 kg of drinking water, which is not up to the drinking standard. LED fluorescent lamp does not contain any toxic substances and is a completely green and pollution-free light source.
6. Wide color temperature range: it can provide almost any color temperature, and it can also provide red, green, blue or even any color light.
7. High color rendering index: the color rendering index of incandescent lamps is 95, that of fluorescent lamps is 65-80, and that of LED fluorescent lamps can be greater than 80.
8. There is no ultraviolet radiation.
9, non-glass products, not easy to break, impact resistance, vibration resistance.
10, safe to use: the LED fluorescent lamp with external isolated power supply does not touch the mains high voltage at both ends of the lamp, and only has a DC safe voltage below 36V, so there is no danger of electric shock.
References:
Baidu encyclopedia -LED fluorescent lamp
Baidu encyclopedia-light color
Baidu encyclopedia-color temperature