LED lights "forced palace" energy-saving lamps

It took more than a century for energy-saving lamps to replace incandescent lamps. LED lamps have reached the point where energy-saving lamps have “separated the country” but only took them more than a decade. Because of the shortcomings of energy-saving lamps such as energy consumption and pollution, LED lamps have been replaced by faster and faster steps.

Home lighting will bid farewell to "Edison era"

According to the country's roadmap for phase-out incandescent lamps, on October 1 this year, incandescent lamps for general lighting of 100 watts and above are prohibited from being sold and imported. From September 1, the incandescent bulbs have been completely banned in the EU, and traditional incandescent bulbs have completely withdrawn from the market. This means that China's home lighting will also officially bid farewell to the "Edison era" that has lasted for more than 100 years.

In 1879, Edison made carbon fiber (ie, carbon filament) incandescent lamps, which marked the birth of incandescent lamps. For more than a century, after people's continuous improvement of filament materials, filament structure, and filling gas, the luminous efficiency of incandescent lamps has also been correspondingly improved, but other lighting technologies have also developed. After 1995, a trichromatic fluorescent lamp, commonly known as "energy-saving lamp", slowly became the main choice for home lighting. At present, 80% of households in Suzhou have used energy-saving lighting.

Due to different lighting principles, the service life of an incandescent lamp depends on the quality of the tungsten wire in the lamp, and the service life of the energy-saving lamp and the LED lamp depends on the quality of the ballast. “In theory, the service life of all kinds of energy-saving lamps, LED lamps and incandescent lamps is almost the same, about 8,000 to 10,000 hours, a ballast consists of two or thirty electronic components. As long as one of the quality is lacking, the whole lamp will be broken, which means that the lifetime of a product we usually say is determined by the “short board” of the product. In theory, each electronic component has a certain amount of The number of switches, frequent switching will allow electronic components to constantly start, close, will shorten the use of time; In addition, due to the location of the electronic components of the energy-saving lamp and the lamp are very close, if the lamp is turned on for a long time, the lamp Fever will also affect the service life of electronic components,” said Ye Feng, deputy director and chief engineer of the city’s urban lighting management department.

At present, the price of an energy-saving lamp is about 10 times that of an incandescent lamp. According to the test of the city's city lighting management office, the life span of the energy-saving lamp is reduced by approximately 3 hours per switch. Therefore, do not frequently switch lights, otherwise it is very easy to cause the lamp to go out or even burst. In addition, if the lamps accumulate dust, the output efficiency will be reduced, the brightness will be darkened, and the service life will be shortened. If the residents can keep the lamps clean and keep the output in the best condition, it will not only extend the service life of the lamps, but also save energy.

Energy-saving lamps have their shortcomings and are gradually being replaced on the shelves of lighting fixtures in Carrefour supermarkets of Wanda Plaza. The reporter saw that the previously-priced “Philips” branded incandescent bulbs with a price of 3.8 yuan and 40 watts have disappeared, and the shelves were energy-saving lamps. And a new type of LED light "half the country." This new type of LED lamp has a milky white appearance, but its price is about 30% higher than that of energy-saving lamps. The same 8-watt light, the price of LED lights is more than 40 yuan.

In the laboratory of Kunshan Heguang Lighting Technology Co., Ltd., there is such an 8-watt LED lamp, but the lamp tube is not spherical but in the shape of a one-third loop. The company’s deputy general manager of the company, Guan Jianming, told reporters that this light has been on for more than three years. The purpose is to detect the life of the light. “China is a big producer of energy-saving lamps, and 80% of the world's energy-saving lamps are produced in China. The production of energy-saving lamps is also a process of high pollution and high energy consumption. At the same time, energy-saving lamps also contain mercury, which is more likely to cause environmental pollution after being discarded. Therefore, many foreign countries have restricted the development of this industry. In comparison, such as LED lamps The emerging lighting fixtures have less pollution in their production process and are more energy efficient. This is also the goal and result of our lighting industry's continuous efforts."

The potential shortcomings of energy-saving lamps allow the lighting industry to constantly look for alternatives. At present, semiconductor lighting represented by LED lamps is considered to completely solve the problem of mercury pollution in energy-saving lamps, because it does not contain mercury, and it can save 80% of electricity, and its service life is as long as 8 to 10 years. It is the life of energy-saving lamps. 10 times or so.

Guan Jianming said that the common LED lamp chips in the market were generally 1 watt to 3 watts, with high color saturation, flexible control, and concentrated use of light sources. Therefore, they can be well represented when used in landscape lighting design. The landscape has features such as darkness and local lighting. The greater advantage is that the wattage is small and the power saving effect is more obvious. As technology improves, the power of LED lamps also increases. However, LED lamps are still defective, their spectrum is single and there are no three primary colors. And with the increase of power, the problem of heat dissipation becomes more prominent. Now LED chips with more than 10 watts of single-chip are few or expensive. However, LED lights are advantageous if they are used as street lighting in dormitory areas, long corridor lights, and family night lights.

Therefore, he suggested that if residents choose to use LED lights as a room lighting, they can use multiple light fixtures at the same time, which is beautiful and energy-saving. The reporter also found in the lighting market, compared with traditional chandeliers, LED lights, although most of the wattage is small, but the volume is also small, easy to conceal, its light source can be adjusted, so the use of LED lights, a variety of chandeliers more novel models . After some beautiful chandelier lights, it is even hard to find the location of the light bulb, making the chandelier look more like a purely luminous artwork.

LED street lamps save about 55% energy compared with high-pressure sodium lamps. While the LED lamps have quietly entered the homes of ordinary residents, the street lights and landscape lighting of Sioux City have gradually entered the “LED era”.

Before the 1950s, the streetlights in Suzhou City were all lit by incandescent lamps; in 1963, the first batch of high-pressure mercury lamps were installed in Xuanmiao City; in 1979, the first high-pressure sodium lamps were installed in Guanqian.

At present, high-pressure sodium lamps are still the common light source for road lighting in our city. It has the characteristics of high luminous efficiency, long life, and energy saving. It is 2 to 2.5 times higher than the high-pressure mercury lighting effect and 7 times higher than the general incandescent lamp. By the end of 1998, there were 17,000 street lights in Suzhou City with a total power of 1,200 kilowatts. Since 1999, as the municipal government’s road lighting project has been fully implemented, after more than two years of hard work, more than seventy primary and secondary arterial roads and four business districts in urban areas have undergone a full-scale lighting transformation. In 2001, the urban area of ​​Suzhou was eliminated. The incandescent lamp realizes the comprehensive upgrading of street lamps. According to statistics from the City City Lighting Management Department, by the end of 2011, the total number of street lights in Suzhou City under its jurisdiction had exceeded 80,000.

On this basis, Suzhou street lamps continue to develop toward science, energy conservation, and environmental protection. In January 2010, the city's city lighting management office installed 80 LED street lights on Jiefang West Road for the first time. At the end of October this year, the 251-inch lantern-type street light on Shiquan Street was also fully replaced with an LED light source. As early as before these two projects, 80% of the more than 140,000 urban landscape lights in the urban area had turned into LED lighting.

In the Jinmen Road warehouse of the city's urban lighting management office, rows of lantern-type street lamps removed from Shiquan Street lay on the ground, waiting for repairs and modifications. This kind of lantern has a net weight of only 30 kg or more. Since 2004, these antique palace lanterns have begun to serve the public. It has been nearly 10 years since then. Therefore, there have been various degrees of pollution and damage, and reflectors have also begun. Aging affects the lighting effect.

The reporter saw that after the renovation and cleaning of the palace lantern, the last step was to install a new type of LED light source. The LED light source used in the lantern is like a sunflower with a diameter of about 20 centimeters. The 35 lamps are arranged in a neatly aligned manner.

The staff being installed told the reporter that this lantern is the street lamp on the Shiquan Street motorway. The total power is 45 watts. To achieve the same lighting effect, a 100 watt high pressure sodium lamp must be used before, that is, to achieve the same Brightness, a LED street lamp can save about 55% energy than high-pressure sodium lamp. Such an energy-saving rate will undoubtedly save a large amount of energy expenditure for a city with a population of 10 million.