With the implementation of the ladder price policy, the savvy Wuxi citizens pay more attention to energy conservation. Now even buy a light bulb to count. The citizen Xiao Xu purchased the new house decoration at a decoration group purchase station. Under the encouragement of the shopping guide, he purchased a lot of LED lamps. Although the LED is expensive, there is nothing to say about energy saving. The guide told me that LED can save 70% of electricity compared with traditional energy-saving lamps.
Yesterday, the reporter came to the Electromechanical Product Testing Center of Wuxi Inspection and Quarantine Bureau to consult the relevant technical personnel on this fashionable LED lamp to understand its magic.
Compared with the same brightness incandescent lamp, saving 70 yuan a year, the electricity purchase guide said that the power saving 70 is compared with the LED lamp and the same brightness of the fluorescent lamp, the LED is indeed quite saved. Zhao Jiejun, deputy director of the testing center, calculated the account for the reporter: a 3w LED light, the brightness is equivalent to 40w incandescent lamp, according to the use of 10 hours a day, the annual electricity consumption is only 10 degrees, and the incandescent lamp needs 146 Degree, saving electricity costs is about 70 yuan. Another outstanding feature of LEDs is their long life. The life of ordinary incandescent lamps is 1000-2000 hours, and the life of ordinary fluorescent lamps is 8000 hours. The life of the LED lamp is 30,000-50,000 hours. For example, according to the calculation of 32,000 hours, the life of an LED lamp is four times that of an energy-saving lamp, that is, the energy-saving lamp is replaced four times, and the LED lamp is replaced once.
LED lights have other features, such as its voltage adaptability, from tens of volts to 264 volts can work properly. And the impact of instantaneous current on them is not serious. Some people who have energy-saving light bulbs will be broken in two months, and the fluorescent tubes will be black after both ends, mainly because they are often switched. The instantaneous current generated when the lamp is turned on has a fatal hazard to the life of the energy-saving lamp. Many energy-saving lamps have not yet started to save energy for the home, and they have died before the teacher. This problem is not on the LED.
According to the reporter, the LED lamp home market in Japan, South Korea and Taiwan is currently active. In Taiwan, the price of electricity was raised once in May this year. The energy-saving benefits of LED lights began to show up. In the local small convenience stores, LED lights were sold, and the business was very hot.
It is recommended not to use LED desk lamps for children. However, things always have two sides. The high price of LED lights is an indisputable fact. Recently, reporters visited some big supermarkets in Xicheng and found that the average LED light is about 50 yuan. If an 8w LED lamp is waterproofed and certified, the price can be as high as one hundred yuan.
When the reporter searched on Taobao, he found that many of the high-quality LED spotlights had a price of only a dozen or twenty yuan. Experts explained that LED lamps are costly and complex to manufacture. The production cost of 1w is about 10 yuan. Like some brand products, such as Philips' 3w LED lights are priced at around 60 yuan. In addition, because LED lights have the characteristics of heat collection, it is necessary to have a good heat sink. Experts showed reporters several different LED bulbs. The reporter found that their lampshades are made of a layer of aluminum. These aluminums are used for heat dissipation. We have seen lampshades made of plastic. The LED lamps are definitely not qualified. of.
Although there are already a lot of LED desk lamps on the market, some also have the concept of eye protection. However, the reporter learned that the professional has different opinions on whether the lamp is suitable for reading. Experts interviewed by the reporter said that because the illumination range of LED lights is relatively concentrated, the farther the illumination from the LED lights is, the lower the illumination is. If you hang it to the ceiling, it is difficult to get good illumination in other corners. In addition, LED lights may have a certain photobiohazard, so it is not recommended as a light source for reading and writing.
Choosing a big brand of products Ordinary citizens want to choose LED lamps, how to choose? Experts said that because the LED market is mixed, everyone should choose the brand of well-known large enterprises when they choose. These companies have better quality awareness, and the product safety indicators and product performance indicators can meet the requirements of national standards.
In addition, experts also reminded the public to pay attention to a term called color temperature. This color temperature indicator will be marked on the package and many people will not understand it. Popularly speaking, it is the color of the light source. Specifically, when the color temperature is less than 3300k, it is warm color, which is suitable for the family to create a warm atmosphere. If it is in the factory floor or office, it is suitable to use the intermediate color of 3300-5300k to simulate the effect under sunlight. If you want to have some special atmosphere, such as darker and colder, the color temperature choice is greater than 5300k. (Evening reporter Gao Jing)
LED is the abbreviation of English light emitting diode (light-emitting diode), its basic structure is a solid-state semiconductor device that can convert electrical energy into visible light. In the 1960s, scientists and technicians used the principle of semiconductor PN junction light to develop LED light-emitting diodes. The LED was originally used as the indicator light source for the instrument. In 1998, the white light LED was successfully developed. At present, LEDs for daily use are mainly used for building exterior lighting, landscape lighting, signage and indicative lighting, indoor space display lighting, entertainment venues and stage lighting. Although the traditional light source can not be completely replaced at present, with the continuous improvement of technology, it will definitely be the world of LED in the future.
In early 2007, the Australian government took the lead in announcing the complete phase-out of incandescent lamps in the form of legislation. China has also announced that it will phase out ordinary lighting incandescent lamps in five stages. From October 1 this year, it will ban the import and sale of ordinary lighting incandescent lamps of more than 100 watts, and then transition to 60 watts and 15 watts.
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