one,
Host: The audience friend, the lamp king is the symbol of our ancient town. Do you know what lights are used to decorate the radiant lights that we see every night?
Chen Gong: These beautifully decorated lights on the surface of the lamp king are LED lights. LED has been paid more and more attention in recent years, and LED lamps have gradually become the focus and focus of the development of lighting manufacturers.
Host: So what kind of lighting is the LED light? Why does it have such a big charm that attracts so many eyes? In the next few episodes, we will take you into the magical LED world.
Chen Gong: Let's start with the light source. There are three main types of electric light sources used in lighting projects.
Host: The first type is the heat radiation source. For example, the incandescent lamp and tungsten halogen lamp that we commonly use belong to this category.
The second type is a gas discharge light source, such as a fluorescent lamp, a high pressure sodium lamp, a metal halide lamp, and the like.
Chen Gong: The third type is an electric light source that emits light by interacting with an electric field by an appropriate solid matter. The LED (LightEmittingDiode) LED that we are going to talk about is the light source.
Host: Today's lighting industry in the world is focused on the new light source of LED. Some experts even predict that the 21st century will become the new solid light source era due to the emergence of LED. In the near future, LED will dominate the entire lighting. industry.
Chen Gong: I personally are very optimistic about the development prospects of LED. This is because LED is a solid component that converts electrical energy directly into light energy. Compared with traditional light sources, LED has many obvious advantages.
The first is that its operating voltage is low. LEDs can operate at low voltages between 6 and 24V depending on the product. It is a safer source than high-voltage light sources and is especially suitable for use in public places. The circuit parts of lamps, incandescent lamps, fluorescent lamps, HID lamps, etc., which we commonly use, generally exceed the safe voltage and low voltage that the human body can withstand. Therefore, the anti-shock project is often the focus of our testing organization, but LED lamps are in this respect. Relatively safer.
Host: Chen Gong, there are many advantages of LED, or we will introduce it to the audience next week.
Chen Gong: Well, we will see you at the same time next week.
Host: Goodbye to the audience.
two,
Host: Audience friends, everyone, "Lighting quality 1 minute" has met you again.
Chen Gong: Hello everyone, today we will continue to talk to you about the advantages of LED.
The second significant advantage of LEDs is their low energy consumption. With the same light effect, the LED light source consumes only one-fifth of the energy of an ordinary incandescent lamp. According to a statistical data in the United States, if only LEDs are used instead of all incandescent lamps in the United States as traffic signals, 250 million kW can be saved in one year.
Host: LED's huge advantages in energy conservation have been recognized by countries around the world. The EU has recently reached a consensus that it will eliminate high-energy incandescent lamps in Europe within two years. And China has also been vigorously promoting this green energy-saving lighting.
Chen Gong: The third obvious advantage of LED is its firm structure and strong applicability. LEDs are small in size and can be fabricated into a variety of shapes and are suitable for use in volatile and harsh environments.
Host: It seems that the flexible LED tube can be placed on the floor or under the step. LEDs, as special environment lights, still maintain good visibility in rainy or foggy conditions.
Chen Gong: The fourth obvious advantage of LED is its stability and long life. Most of the quality of LED lamps, after 100,000 hours, the light attenuation will be reduced to the initial 50%. The use of LED light sources in many public lighting installations where the replacement of light sources is cumbersome can result in significant maintenance cost savings. Therefore, although the cost of the initial purchase of LED is relatively high, it is relatively cheap in the long run.
Host: The fifth obvious advantage of LEDs is the fast response time. The response time of the LED lamp is nanosecond. If the LED is installed in the taillight of the car, the safety in driving can be greatly improved.
Chen Gong: The sixth obvious advantage of LED is the low environmental pollution. Europe has implemented the RoHS Directive on the Prohibition of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment. LEDs do not contain harmful substances, mercury, and there is almost no ultraviolet radiation and infrared rays, which is very environmentally friendly.
Host: LED is rich in color. In urban landscape lighting, LED combinations of different colors can be used to control the color change of lights by means of microprocessors, which greatly enriches the design means of urban lighting landscape.
Chen Gong: LEDs are also easy to control. The driver circuit of the LED is compatible with the integrated circuit, so it can be directly mounted on the printed circuit board, and thus can be widely applied to various electrical devices.
Host: It seems that LED as a new type of light source does have outstanding advantages and great development potential.
Chen Gong: We believe that LED lamps will have a very bright future in the field of lighting.
three,
Host: Audience friends, welcome to watch our "Quality 1 Minutes" program.
Chen Gong: In the first two episodes, we introduced to you what LEDs are. As a new and efficient solid-state light source, LED has significant advantages such as long life, energy saving and environmental protection, so it has been widely used in landscape lighting, signal lighting, communication, consumer electronics and other fields.
Host: We can easily find LEDs in the decorative lighting of architectural decoration, interior decoration, tourist attractions, city squares, etc., as well as commercial lighting such as decoration and advertising. Like Shanghai and Xiamen, they have taken the lead in installing LED fixtures in the main landscape of the city, which not only beautifies the city but also saves energy.
Chen Gong: In the automotive lamp market, LEDs, such as indicator lights, taillights, directional lights, brake lights, etc., have been used as lights in the interior and exterior of the car. It seems that the entire series of brands such as Audi and BMW have adopted high-brightness LED light sources.
Host: In the field of traffic lights, the demand for the traffic light market has increased significantly due to the high brightness, long life and power saving of LEDs. Most of the traffic lights in the United States have adopted LED light sources. Shanghai also stipulates that the new traffic lights will always use LED light sources.
Chen Gong: In the backlight market, the application prospects of LED are also very impressive. For example, the backlight source of a mobile phone is calculated by using 2 LEDs with one backlight and 6 LEDs for one mobile phone. The LED required for a conservative production of 400 million mobile phones is about 3.2 billion.
Host: There are outdoor large screen display devices. Since high-brightness LEDs can produce red, green and blue primary colors, in the past two years, full-color LED outdoor displays have become the mainstream instead of traditional light boxes, neon lights, magnetic flaps, etc., especially in large stadiums around the world. It has become standard equipment. At present, the most influential LED display in the world is the LED display screen of the New York Stock Exchange of Manhattan Times Square. This can be divided into multiple screens, and the market of Wall Street stocks will be displayed in front of the public with an area of ​​10,736. Square feet, using a total of 18,677,760 LEDs.
Chen Gong: In addition, in the field of electronic equipment, LED has become the first choice for various electronic equipment indicators. At present, almost all electronic equipment has LED figures.
Host: In the field of special work lighting and military applications, LED light source is widely used in explosion-proof and field operations due to its shock resistance, weather resistance, good sealing performance, low heat radiation, small size and portability. In special workplaces such as mines and military operations or in harsh working environments.
Chen Gong: In the commercial lighting market both indoors and outdoors, LEDs have not been widely used because of low luminous flux, narrow viewing angle, and difficult product quality. However, with the emergence of new semiconductor materials, further improvement in processing technology and packaging technology, LEDs will have greater market potential.
The fourth episode hosted: Chen Gong, you see, we are tasting tea in this quaint case, behind it is a colorful LED curtain wall, the classical feelings and the 21st century fashion are so harmoniously blended together.
Chen Gong: Well, it is indeed a sentimental. Nan Nan, LED lighting is very fashionable, but LED is not young. As early as 1962, the UK had produced the world's first LED (light-emitting diode), and only a few months later, our country also independently developed its first LED (light-emitting diode).
Host: In the last few decades, the international LED industry's technical level has been greatly developed. In 2003, China also launched a semiconductor lighting project from the national level, and listed the topic of “semiconductor lighting industrialization technology development†as a major project of the “Tenth Five-Year†National Science and Technology Research Program.
Chen Gong: At present, China has a certain technical and industrial base in the field of LED semiconductor lighting. Through the support of the national science and technology plan, we have initially formed a relatively complete industrial chain from epitaxial wafer production, chip fabrication, device packaging to integrated luminaire applications, and product packaging has also occupied a considerable share in the international market.
Host: The obvious advantages of LED make it a huge business opportunity in the international market. Some organizations estimate that the sales of high-brightness LEDs used in various new products in 2006 reached 4 billion to 5 billion US dollars, becoming an important part of the lighting industry with a production value of 26 billion US dollars. With the continuous use of LEDs in TVs and even certain home appliances, LED sales are expected to increase to $10 billion by 2010.
Chen Gong: Faced with such attractive business opportunities, the three major multinational companies in the lighting industry, Royal Philips, Osram and General Electric, have invested heavily in the development of LED production to compete for this important lighting market.
Moderator: At present, there are about 600 enterprises with a certain package size in China. From the perspective of the distribution area, it is mainly concentrated in the Pearl River Delta, the Yangtze River Delta, Jiangxi, Fujian, and Bohai Rim.
Chen Gong: At present, the domestic LED device packaging capacity is about 60 billion / year. In 2006, the sales volume of domestic high-brightness LED packaging products was about 14.6 billion yuan, an increase of 46% over 2005. The market prospect is very promising.
Moderator: Hey, Chen Gong, how do I feel that we seem to be two salesmen, encouraging us to develop LED industry in the ancient towns!
Chen Gong: Oh, this is helping our ancient town enterprises to grasp the latest market trends! Of course, we must master the technology in the market. From next week, we will introduce the standards and testing technologies of LED in the field of lighting with our audience.
Host: Well, we will see you next week.
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