Recently, China’s National Development and Reform Commission released an announcement: “Plans for phasing out incandescent lights in China”. According to this announcement, from 1st October of 2012, incandescent lights with power consumptions higher than 100W will be banned in the mainland. And from 1st October of 2012, incandescent lights with power consumptions higher than 15W will be banned in the mainland. That means the ordinary incandescent lighting applications will leave the stage of the lighting history. As the most advanced lighting technology today, LED lights has emerged in the market and been known by customers.
Since the invention of LED lights, their brightness has constantly and stably upgraded (from LED indicators to intelligent LED street lights), implying that LED lights will become the dominated lighting applications on day. Similarly, LED down lamps also transformed from the high-en lighting products to the new darling of general application market.
Down lights is a type of indoor lighting applications, which can be used in shopping malls, offices, factories, hospitals and also houses. LED down lamps inherits all the advantages of traditional down lights, besides they also have typical features of LED lighting technologies: less heat dissipation, save more energy, can work for a long time, small costs of maintenance and replacement. In the early stage of development, because of the over-expensive of LED chips, LED down lamps were hardly accepted by end users. However, the reduction of LED chip prices and together with the improvement of cooling section designs made it is possible for LED down lights to seize the commercial lighting market.
LED chips, lamp covers and drivers (power supplies) compose the main body of LED down lights. single LED chips with high power are more suitable for LED down lighting applications. Low-powered LED chips, like 5050, 5630 are more suitable for LED panels, since they cannot provide sufficient light when used individually. The normal distance from lamp bodies to the ground for indoor lighting products is around 4-5 meters. Definitely, only high-powered single LED chip can meet such requirements. The most common used high-power LED chip for LED down lights is 1W LED chip, which can be used to make 1W, 3W, 5W, 7W and 9W (25W tops) LED down lights.