A, led lamp
LED lights, LED for short. A diode made of a compound containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), etc., can be used to produce a light-emitting diode by emitting visible light when electrons are combined with holes. Used as an indicator light in circuits and instruments, or as a text or digital display. Gallium arsenide diode produces red light, gallium phosphide diode produces green light, silicon carbide diode produces yellow light and gallium nitride diode produces blue light. Due to chemical properties, organic light-emitting diode OLED and inorganic light-emitting diode LED.
What are the advantages of LED lights:
1. Energy saving, the energy consumption of white LED is only 1/10 of that of incandescent lamp and 1/4 of energy saving lamp;
2. Longevity, with a life span of more than 100,000 hours, is "once and for all" for common household lighting;
3. Can work at high speed. If the energy - saving lamp is frequently turned on or off the filament will be black quickly broken;
What's wrong with LED lights:
High initial cost, poor color rendering, low efficiency of high power LED, constant current drive (special drive circuit is required). In contrast, all kinds of traditional lighting have some defects.
Energy saving lamp
Energy-saving lamp, call save electric lamp, electron bulb, compact fluorescent lamp and integral type fluorescent lamp again, it is to point to will fluorescent lamp and ballast (stabilizer) combine the illume of an integral whole. In 2008, the state launched the "green lighting" project, in which urban and rural residents and enterprises enjoy a certain proportion of subsidies for the use of energy-saving lamps by bid-winning enterprises. The popularization of energy saving lamps is of great significance. However, the damage of waste energy saving lamps to the environment has also caused concern. By the end of October 2012, hundreds of millions of energy saving lamps had been scrapped, each of which could pollute 180 tons of water and soil. The disposal and recycling of waste energy saving lamps attracted attention. Still, demand for CFLS is growing, especially in 2014, which is just around the corner.
What are the advantages of CFL?
1. Compact structure and small size.
2. High luminous efficiency of 60Lm/w, saving more than 80% electricity and saving energy.
Replace incandescent bulbs directly.
4. Long life, 6 ~ 10 times as long as incandescent lamp.
5. The inner wall of the lamp tube is covered with protective film and the use of triple helix filament can greatly extend the service life.
What are the disadvantages:
1. Mercury pollution in the production process and the use and abandonment. At present, western countries attach great importance to mercury pollution. More and more Chinese people have realized the harm of mercury pollution
2. As it is a glass product, it is fragile, difficult to transport and install
3. Its power consumption is still too high
Easy to damage, short life, energy saving and no money is the best portrayal of it.
What's the difference between an led light and a CFL
CFLS are short for CFL, which is mostly energy efficient compared to conventional incandescent bulbs.
LED light bulb refers to the light bulb that USES LED as the light source, and its light efficiency is also very high. It is a new type of light bulb at present, and it has the tendency of replacing CFL.
At present, the light effect of CFL is slightly lower than that of CFL, and the general light effect of CFL is 50-65lm/W. LED itself high photosynthetic efficiency, at present most of between 100-130 lm/W, but due to the LED light Angle, make the whole lamp lights in 65-80 lm/W, both difference is not too big, but compared to the same luminous flux of CFLS and leds price is in commonly 2 to 4 times the left and right sides, small power price difference is small, large power difference is bigger, than the life compared between the two LED energy-saving lamps slightly tall, in general the nominal life of CFL in 6000-12000 - h, the nominal life of leds in 10000-20000 - h, These comparisons are only for some exports to the European Union or North America and so on. The quality of domestic sales is variable and cannot be assessed in detail. But the ones with the best longevity are the ones with the most orders for these places (which include so-called international brands like philips, osram, etc.).
For visual problems, incandescent bulbs are better than CFL bulbs and CFL is better than leds. Especially LED at present domestic most of the LED the whole light LED to eyesight influence is not concerned, deliberately go to in order to reduce the loss of LED light source to the whole light between the photosynthetic efficiency, in order to make the whole lamp has high photosynthetic efficiency, luminous flux, such as data, USES the single-stage PFC circuit (higher ripple, easy to make the eye fatigue), and to satisfy our country about the first-class standard lamp, the price of the sink.
Are led lights more power efficient than CFLS
First of all, it must be emphasized that LED bulbs save more electricity than CFLS, which most people know, or have heard of, but many people still wonder, after all, where the electricity is saved.
The luminous efficiency of halogen CFLS is only 30-40lm /W, and the luminous efficiency of three-color CFLS is higher than halogen CFLS, about 40-60lm/W (products of different brands differ in quality and luminous efficiency, and the luminous efficiency of philips CFLS is about 60lm/W). However, LED's luminous efficiency is much higher than that of energy-saving lamps, and the current technical level has generally reached 90-100lm/W. So in essence, the brightness of the 1 w leds produce need at least about 2 w energy-saving lamps to achieve the same brightness, however actually felt brightness is affected by many factors will influence is the most direct factors as temperature, high temperature will produce droop, energy-saving lamps light will produce big bright hot, and LED cold light source, heat produced by smaller than energy-saving lamps a lot, so the LED light failure is smaller than energy-saving lamps;
There are still a lot of buyers. Users know that LED saves more power than energy-saving lamps, but they think that LED is more expensive than energy-saving lamps, and a little electricity saved is not enough to make up for the extra money spent when buying lamps, so they decide to continue to buy energy-saving lamps that are relatively cheap. Through data analysis, the amount of electricity charges in the process of using energy-saving lamps far exceeds the amount saved when buying energy-saving lamps. Therefore, it is suggested that we try to use LED lamps, especially enterprise users with large usage amount. However, it is better to choose LED lamps with first-line brands and manufacturers with strength.
