What are LED Light Bulbs?

LED bulb is the abbreviation of Light Emitting Diode. Light emitting diode is a solid-state semiconductor device that can convert electric energy into visible light. It can directly convert electricity into light.

LED bulb

LED bulb is the abbreviation of Light Emitting Diode. Light emitting diode is a solid-state semiconductor device that can convert electric energy into visible light. It can directly convert electricity into light.

Chinese name

LED bulb

Foreign name

Light Emitting Diode

Material

led

Function

Convert electricity directly into light

Nature

Semiconductor device

Speaking of lighting, people will immediately think of the colorful and various lamps in the lighting store. Although these lamps have different shapes, the core part of their lighting ---

Nick Holoniaco is a general researcher at General Electric Company. In 1962, he developed the world's first LED-light-emitting diodes. He believes that getting red light will also make it possible to get light of other colors. In 1963, he

LED energy-saving light bulbs are currently based on high-power white LED single lamps. LED lighting fixtures are collectively known as LED lighting fixtures. With the further maturity of LED technology, LEDs will achieve more and better development in the field of design and development of indoor lighting fixtures. The design of living room lighting in the 21st century will be based on the design of led lighting bulbs, which will fully reflect the energy-saving, healthy, artistic and humanistic lighting development trend, and will become the dominant lighting culture in the room.

Tradition

1. Energy saving research data show that, because LED is a cold light source, semiconductor lighting itself does not have any pollution to the environment. Compared with incandescent lamps and fluorescent lamps, the power saving efficiency can reach more than 90%. At the same brightness, the power consumption is only 1/10 of that of ordinary incandescent lamps and 1/2 of that of fluorescent tubes.

Second, health LED is a green light source. LED lights are DC driven, no flicker; no infrared and ultraviolet components, no radiation pollution, high color rendering and strong light directivity; good dimming performance, no visual error will occur when the color temperature changes; cold light source Low heat for safe touch; these are beyond the reach of incandescent and fluorescent lamps. It can not only provide a comfortable light space, but also can well meet the needs of people's physical health. It is a healthy light source that protects vision and is environmentally friendly. Because the power of a single LED is low and the brightness is low, it is not suitable to be used alone, and the assembly of multiple LEDs into a practical LED lighting fixture has broad application prospects. The lamp designer can determine the shape of the lamp's optical system, the number of LEDs and the power according to the needs of the lighting object and the luminous flux. It can also combine several LED light-emitting tubes into a "secondary" of a point light source, ring light source or area light source "Light source", the lamp is designed according to the combined "secondary light source".

Third, artistic light color is the basic element of visual aesthetics and an important means of beautifying the living room. The selection of the light source directly affects the artistic effect of the light. LED shows unparalleled advantages in the art of light color display lamps; color LED products have covered the entire visible spectrum range, and have good monochromaticity, high color purity, red, green, The combination of yellow LEDs allows greater flexibility in the choice of color and grayscale (16.7 million colors). The lamp is a luminous sculpture, and the material form of the lamp, which is constructed from materials, structures, shapes and textures, is also an important means of displaying art. LED technology enables the indoor lighting to better combine science and artistry, breaking the border frame of traditional lighting, and transcending the inherent concept of the so-called lighting form. The design of the lamp is based on the visual creative and artistic expression of the form. A new perspective to understand, understand and express the theme of light. It can more flexibly use the combination of light and dark, the combination of light and color, the advantages of material and structure design in optical technology, and improve the design freedom to weaken the lighting function of the lamp.

Fourth, humanity is beyond doubt, the relationship between light and people is an eternal topic. "People see the lamp, I see the light". It is this classic saying that has changed countless designers' understanding of the lamp. The highest realm of lamps is the "shadowless lamp" and the highest embodiment of humanized lighting. There is no trace of common lamps in the room, so that people can feel the light but cannot find the light source, which reflects the humanized design that perfectly combines light and human life. . ^[1]

The emergence of LED has broken the design methods and ideas of traditional light sources. There are two latest design concepts.

For a long time, people have not used light-emitting diodes for lighting, mainly because light-emitting diodes usually can only emit red or yellow light. To obtain white light, they must also make light-emitting diodes that emit blue light. In this way, the red, yellow, and blue lights "blend" to produce white light. This dilemma that troubled people was finally solved. Scientists have discovered a new type of semiconductor material

1. Aiming at the characteristics that LED bulbs only have the function of lighting, a series of LED bulbs have been designed, which not only have the function of lighting but also the function of decoration.

2. The lighting direction of the traditional LED light bulb is fixed, and a new type of light bulb that can turn at any angle is newly designed and obtained the national invention patent.

Jed Dorsheimer, senior asset analyst at Canaccord Adams, discusses the cycle of the LED market. The first cycle began in the first few years of this century. It was mainly driven by mobile handheld devices. LEDs were used to illuminate the keyboard, and then they were used as backlight sources for mobile phone color screens. The dramatic increase in LED manufacturing caused overcapacity between 2004 and 2005. However, this period has promoted the improvement of LED performance and the decline in price, which in turn created the second round of LED cycles, that is, LED backlights for medium-sized notebooks and large-sized TVs. Based on the rapid growth of the (flat panel) TV market, Dorsheimer said that the LED industry will experience a significant lack of capacity, and by 2012 the LED chip gap will reach 70-100 billion. The production capacity of several hundred MOCVDs needs to be invested, and the sapphire substrate should also be adequately supplied. Dorsheimer believes that according to the development trend, in the future, 30% of the LED production capacity will be excessive, requiring "one to two years of digestion cycle"; the production capacity will not have much growth between 2014 and 2016. History will repeat itself. Due to the decline in LED prices and the improvement of performance, it will help the industry to advance to the next cycle, but the driving factor is lighting.

Two reports boldly look forward to what innovative LED applications the world will present. For example, Avary's technical director Cary Eskow discussed the use of LEDs in the medical and psychophysiology fields. He proposed the potential application of LEDs in medical diagnostic endoscopes. According to his report, by adjusting the color temperature of two-color or three-color LEDs, this will improve the doctor's ability to distinguish between different tissues. Eskow also proposes that LEDs can be used to adjust the human physiological cycle to treat multiple physiological functions including sleep and wakefulness. Controllable blue LEDs make people more awake and increase productivity without the help of drugs or caffeine.

Industrial lighting technology plays a leading role and supporting role in the IT and BIO revolution

1.LED output

1. Energy saving. White LED consumes only 1/10 of the energy of incandescent lamps and 1/4 of energy-saving lamps;

2. Longevity. Lifespan can reach more than 100,000 hours, which is "once and forever" for ordinary home lighting;

3. It can work at high speed. If the energy-saving lamp is turned on or off frequently, it will turn black quickly and break down;

4, solid-state packaging, belongs to the cold light source type. Therefore, it is very convenient to transport and install. It can be installed in any miniature and closed equipment. It is not afraid of vibration and basically does not need to consider heat dissipation.

5, LED technology is advancing with each passing day, its luminous efficiency is making an amazing breakthrough, and the price is constantly decreasing. An era of white light LEDs entering the home is rapidly coming;

6, environmental protection, no harmful substances of mercury. The assembly parts of LED bulbs can be easily disassembled and can be recycled by others without the manufacturer's recycling.

Summary: Obviously, as long as the cost of LED lights decreases with the continuous improvement of LED technology. Energy-saving lamps and incandescent lamps are bound to be replaced by LED bulbs. The state is paying more and more attention to energy saving and environmental protection issues, and has been vigorously promoting the use of LED bulbs.

Advantage

1) Light distribution technology enables

LED light strips will inevitably produce defects in the production, and the maintenance of defective LED light strips is a matter that requires special attention. Because LED strips are easily damaged due to improper operation during maintenance.

1.Anti-static

Because LEDs are electrostatic sensitive components, if you do not take antistatic measures when repairing LED strips, you will burn out the LEDs and cause waste. It should be noted here that the soldering iron must use an anti-static soldering iron, and the maintenance personnel must also take anti-static measures (such as wearing a static ring and anti-static gloves).

2.Continuous high temperature

The two important components of LED strips, LED and FPC, are products that cannot sustain high temperature. If the FPC continues to be at a high temperature or exceeds its withstand temperature, it will cause the FPC's cover film to bubble, directly causing the LED strip to be scrapped. At the same time, LEDs can't sustain high temperature continuously, and their chips will be burned out at high temperature for a long time. Therefore, the soldering iron used in the maintenance of LED strips must use a temperature-controlled soldering iron to limit the temperature to a range, and it is prohibited to change and set it arbitrarily. In addition, even so, you need to pay attention to the soldering iron not to stay in the LED pin for more than 10 seconds during maintenance, if this time is exceeded, it is likely to burn out the LED chip.

3.Short circuit

Many LED strips are defective because of a short circuit at the feet. Be sure to find out the real cause of the defect before repairing. Otherwise, after the bad LED is replaced rashly, the chip of the LED will continue to be broken by the short-circuit current when the LED is powered on again. Therefore, before replacing a new LED, you must first find out the real cause of the bad, so you can do more with less.