LED wash wall lamps and lanterns has appeared a few years, but until recently the price is very cheap, the quality of the light has been improved a lot.
In the past few decades, we have become accustomed to the light bulb, the life of each bulb about 1000 hours.
Energy crisis and environmental movement in the 1970 s spurred the development of more energy-efficient technology. But to the consumers begin to contact the energy-saving technology in recent years.
Fluorescent lamps (CFL) first appeared in the shop is in the mid - 1990 - s, as a more efficient electric light, replace the incandescent light bulb.
Although, very energy-saving fluorescent lamps, but has not been popular, because, fluorescent light, after opening will take some time to shine, and contains mercury, if bad need to handle more carefully.
Most companies have eliminated fluorescent lamp, because performance better and cheaper LED wash wall light lamps and lanterns.
Now LED to a full spectrum of colors, for most people, a good incandescent light and LED bulb light have little difference
LED lights can save much money?
LED bulbs are still much more expensive than incandescent bulbs. For example, a 100 - watt incandescent light bulb costs about $0.75, power consumption 0.1 degrees per hour, the life of each bulb at about 1000 hours. In contrast, a 23 w fluorescent light bulbs, can produce similar quality but cost about $3, power consumption 0.23 watts per hour, life 8000 hours. To achieve the same lighting levels, need 14 w LED bulbs, cost $6, power consumption 0.014 degrees per hour, about life in 25000 hours.
In that case, although the LED bulb itself cost higher, but the longer life, lower power consumption.
Calculated according to the light bulb above, 1 yuan per KWH electricity calculation, during the life of an LED light bulb, the user a total of $350 bills to pay. Incandescent light bulbs, use the same time, by contrast, the electricity cost is as high as 2500 yuan. Save 2000 yuan has little appeal for consumers and sound, but if given a family may have two bedrooms, a living room, a kitchen and a bathroom, need at least 5 lamp, if is done with LED bulbs, so at least we can save up to 10000 yuan, this is not a small sum of money.
And leds generate less heat than incandescent bulbs, can reduce the need for air conditioning in hot summer, also can save a lot of users.
We should change the LED bulbs?
The answer to this question has been obvious. Although the price of LED bulbs are comparatively high, but a month save electricity bills will be enough to offset.
If you are now using fluorescent lamps, then don't have to rush to change, until the end of the bulb to replace more cost-effective.
LED bulbs can not only help you save the cost of living, more conducive to the environment. The U.S. department of energy is expected in 2014, LED lights save about 41 billion kW/h, more than a nuclear power station output power. If all the lighting switch to LED, saves the electricity will be more than 30 times. Studies have also shown that the LED bulb's impact on the environment is much smaller than incandescent bulbs and energy-saving lamps.
Because LED bulbs use less energy, the heat generated by the few, so the LED bulbs also safer. Incandescent bulbs generate enough heat to cause fire under certain conditions, and the temperature of the LED bulbs cannot achieve this. LED wash wall lamp is made of high power LED, requirements should be in waterproof grade IP65 above is the best, LED wash wall lamp lighting than hard light of light is high, wide area. LED wash wall lamp is generally used in outdoor landscape lighting, projection distance of 2-50 meters.