LED lamps are becoming an integral part of our lives. They are produced by many manufacturers. Among the well-known brands are Cosmos LED lamps. How are they profitable and is it worth replacing the lamps of previous generations with them?
LED lamp
LED diodes are semiconductors. Energy is created by the movement of charges, positive and negative. Basically, it stands out in the form of photons of light. For other types of lamps, the filling of the bulb is of great importance. And the LED bulb may be completely absent. Even if it is, it serves only to scatter light and to protect the diodes from high humidity and pollution.
LED lamps almost do not heat up. Their temperature during operation is 50 degrees. As a result of the fact that energy does not go to heat the lamp, almost all of it is directed to the formation of light. Therefore, such a bulb consumes much less energy (usually 8 times less than incandescent lamps). Instead of a 100 W incandescent lamp, 10 W LED power is enough.
The manufacturers of these lamps claim that the life of their products is from 30 to 100 thousand hours.
LED lamps are eco-friendly. They do not flicker, like luminescent "housekeepers", their eyes do not get tired, they do not contain mercury vapor inside the structure. Therefore, they are easy to dispose of. They are durable, withstand drop from a small height. Their strength is equal to the strength of the plastic from which they are made. In addition, they do not emit infrared and ultraviolet rays.
LED bulbs are quick and easy to change. They can be taken without gloves - it is safe for the hands and for the lamp.
Although these lamps have drawbacks and limitations. So, they give a directed stream of light, which can lead to blindness and the effect of spots. Therefore, they cannot be used where uniform distribution of the light flux is needed.
Do not use LED lamps and where power supplies are not very reliable.
And their main disadvantage is the high price. But if you recalculate the cost of one hour of operation of LED, halogen and incandescent lamps, then the first from this list will be an advantage. But this is in case if it really will work for as long as stated by the manufacturers.
It is rational to install an LED lamp where the light burns a large amount of time - thus it pays off faster.
The main parameters of LED lamps
The parameters by which the described lamps are considered are as follows:
- light flow;
- power;
- base type;
- light temperature;
- ripple factor;
- temperature range;
- voltage;
- degree of protection;
- sizes.
Luminous flux is the main point in the characteristic. Poor-quality Chinese diodes give about 80 Lumens per Watt. Branded (European, Japanese, Chinese) - up to 120 Lm per Watt. There are also superbright - up to 190 Lm per Watt.
The amount of energy that the LED lamp consumes consists of a part for the LED and for the driver. In high-quality lamps, the driver takes up to 2 watts. In cheap low-quality, this part can be 4 times more.
There are more than a dozen types and sizes of socles. Usually they buy E27 (ordinary) and E14 (minion, in modern lamps and chandeliers). GU4 sockets are designed for 12-point spotlights with a contact spacing of 4 mm.
The color temperature range of white is from 2700K to 10000K. The luminous flux of such a lamp can have such shades:
- warm, like from an incandescent bulb (2700K);
- neutral, natural (4200K);
- cold bluish light (6400K).
There may be other colors. But they are not used for lighting rooms. Color depends on LEDs.
The flickering of budget LED lamps can adversely affect the well-being of the owner, especially if she works in the office or bedroom. You should not choose a lamp whose power is supplied through a capacitor. It is better to use lamps with drivers with current stabilization.
The operating temperature range is taken into account when taking a lamp to work in cold weather or in a sauna. This also includes the degree of protection against dust and moisture.
The voltage for our networks can be 220 V or 12 V.
Manufacturer of LED lamps "Cosmos"
The Cosmos brand was developed and created by employees of the KOSMOS Group company. Its employees claim that this is the second most recognizable brand in Russia (after Philips). The named company has been operating for 17 years. She owns 25 percent of all energy-saving and halogen lamps sold . The company's products are sold in more than ten countries.
Assortment "Cosmos Group"
The Cosmos Group company operates in five areas. These are lamps, lamps, lanterns, batteries, electrical equipment. The LED technology of their products saves 90 percent of their electricity. Warranty for all lamps 2 years. They comply with RoHs, CE standards.
Although the Cosmos company is Russian, the Cosmos Led LED lamp is manufactured in China. But these are not fakes, but licensed factory products.
Types of LED lamps "Cosmos"
LED lamps "Cosmos" differ in the size and shape of the cap:
- "Economy Globe" - a product of spherical shape (indicated on the marking with the letter G.
- "Economical candle" and "Economical candle in the wind" is used in chandeliers and lamps.
- "Pear" (A).
- "Corn" - with a dispersion angle of 360 degrees with diodes over the entire surface.
- "Economy Reflector" - (R) for spot lighting with a narrow scattering angle.
- LED tubes of the Classic and Hi-tech series.
Cosmos produces lamps with E27 sockets for replacing conventional lamps, E14 for luminaires and modern chandeliers, E40 for outdoor use.
In addition to ordinary, the company produces LED lamps and premium. Their advantages:
- The use of Samsung, Epistar chips allows extending the service life and increasing light output from 70 to 90 Lm / W.
- They use an improved cooling system (in lamps more than 5W).
- Ceramic body and radiator improve the aesthetic appearance of the product.
- Chromaticity 3000K, 45000K.
Price
The Cosmos LED lamps have different prices. Their price depends on their technical characteristics. So, a 7 W A60 lamp with an E27 socket costs 87 rubles. A product with a socle E14 for 5 watts - from 120 rubles.
LED bulbs E27
It should be noted that the LED lamp E27 "Cosmos" has the most used size and type of cap. It is most often used in our homes. The “E” in the marking indicates that it is screwed, and 27 is the diameter size.
The 11W Cosmos LED lamp with E27 base is the equivalent of a 75W incandescent lamp. Its price is 500 rubles., Weight 1 kg. Designed for lighting large rooms, offices.
LED lamp radiators
Distinguish LED lamps "Cosmos" and the material of the radiator. He can be:
- aluminum;
- composite;
- ceramic;
- plastic.
A radiator is needed to remove heat. A LED that is very hot shines dimmer. But now, with the development of technology, the presence of a radiator is not necessary.
Reviews about "Cosmos" lamps
Customers rated the Cosmos LED lamps. Reviews say that users like these products. As the main advantage is called the even light emitted by them, and the quality of the lamps themselves, which work for a long time.
True, not everyone likes the Cosmos LED lamps. Reviews of some users indicate that the legs of GU-type lamps are very flimsy and quickly disappear. Not everyone is happy with the price, which seems to buyers a bit overpriced. So, a 26 W lamp costs 146 p., While products from other manufacturers can be bought for 90 p. Although the LED lamps "Cosmos" last longer and do not fail. So, we can say that these lamps can significantly save for a long period.
Some consumers check the veracity of the data on the lamp packaging. Some discrepancy with real indicators was noticed. So, the power instead of the declared 5 W is only 3.8 W, 5 W instead of 7 W. The luminous flux is not 340 Lm, but 242 Lm; not 540 Lm, but 422 Lm. As a result, the bulb, which should correspond to 75 watts, actually shines like 45 watts, and the “Cosmos” A60 LED lamp - like 25 watts. Therefore, you need to take a lamp of a greater value than is necessary for a particular case. But in general, consumers believe that the quality of the Cosmos lamps with E caps is quite decent, and recommend buying them.