American magazine named the best technology achievements in home technology in 2004 (Figure)

Sina discovery channel will be serialized by the famous American science magazine "Popular Science" and "Chinese simplified version of a new era of science and technology" authorized to publish the "2004 annual 100 most innovative scientific and technological achievements". The 2004 annual 100 most innovative technology products and technologies involved in various fields of consumer electronics, computer, automobile, automotive technology, entertainment, photography, aerospace, sports and leisure, health care, household technology, engineering, and many achievements are closely related to the daily life of ordinary people. At the same time, these highly innovative results will be of great significance to people's future life and scientific and technological progress. These 100 scientific and technological achievements are jointly selected by experts in the field of science and technology and senior science editor.

One of the household technology the following is a selected "2004 best achievements in science and technology". LED lamp can be compared with Edison's invention bulbs it can provide enough light to the family, and have almost unlimited life.

Do not think that we are talking about the words of the reader - LED (light-emitting diode) lamp is about to replace incandescent and fluorescent lamps. Compared with the traditional light bulbs, LED lamps consume a small amount of energy, and no flicker. The most amazing thing is that it can live for decades. This is because they are passing a current through the durable semiconductor, rather than the traditional light bulbs that rely on weak, high thermal and will soon end of the filament.

LEDs were first used in the 60s, when they were used to indicate the on / off state of the radio. In recent years, engineers have gradually applied them to a variety of areas, signal lights, car taillights, display screen, everywhere can see their figure. So why not use the light-emitting diode lighting in the home? This is because there is a huge obstacle to solve: to be used for lighting in the home, a large number of light-emitting diodes must be installed in a narrow lampshade, but also can not overheat.

Enlux company is located in the mesa Arizona lamp manufacturers (enluxed.com) to find a way to solve this problem. First, they removed the plastic shell of the light-emitting diode, which was mounted on a small piece of plate, which is called the light engine. So the heat dissipation effect is much better than that of many complete light-emitting diodes, which makes it possible to concentrate a large number of LEDs in a small space. Second, the aluminum shade with heat sink (see right) greatly increases the heat dissipation area. 22 watts of FLOOD ($80) lighting effects and 45 to 60 watts of ordinary incandescent lamp, and the service life of up to 50 thousand hours (if a family every day for 4 hours to turn on the lights, then a FLOOD can be used for a year). Because there are many companies around the world to follow the practice of ENLUX company, I believe that the popularity of light-emitting diode lamp that day is not far away.