Currently lighting source: high-pressure sodium lamp, is now mainstream; Halide, due to higher prices, and only a few use; fluorescent lamps, a few use; LED, the current trend of rapid development. LED lights 30 to 40% energy savings are possible through rational design to achieve. At present, the main street is the high pressure sodium light source, high pressure sodium light efficiency up to 120lm / W, luminous efficiency of the LED light source 90 ~ 100lm / W. Light utilization, the high pressure sodium lamp shines on effective road flux of about 40%, the effective utilization of LED light fixtures must be greater than 50%, it may be energy efficient. From the point of view lamp life, LED lights through rational design to achieve more than 20,000 life is possible. However, due to the existing multi-use integrated high-power LED lamps integrated design, namely the lamp housing with integrated LED device is bonded and sealed within the glass, which makes it extremely difficult to maintain, but also affect the overall life of the lamp, unable to adapt LED technology, standardization can not be achieved. Street light module is the main solution to these practical problems. It refers to the source of the idea of ??several pieces of high power LED lamps LED light source to make a light, heat and water and dust IP rating and other structural integration of the module, a lamp composed by a number of modules, and not all of the original LED light source are mounted in a fixture. The LED lamps consists of three components, one lamp base, and second light source module, three is the drive, which is the traditional source of light is the same. The module has a waterproof, light, heat, it is easy to disassemble and other functions. Thus, high-power LED lighting maintenance, repair is very convenient. If the drive is bad, for driving; as an LED light source module damage, damage to the module on the exchange; if future LED light life expires or product replacement, as long as the replacement for one of the components can be, without replacing the whole fixture. Cost savings on the one hand, on the other hand easy to operate. With the use of traditional light fixtures, like the convenience of the entire maintenance process. According to this line of thinking design LED lights have been lit in the Fudan University campus. Most LED lights currently using integrated lamps. The traditional sources of lighting in the form of maintenance, cost and other advantages make us have to think about the direction of development of LED lights. At present, China's LED lights www.ledld.com.cn many manufacturers, the different forms of lighting, which also challenged the industry norm. Light of the module is expected to solve these problems is expected to become the development direction of LED lights.

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