Design regression 18W LED fluorescent lamp into the twenty Yuan era?

The rapid development of LED lighting technology and mature, the traditional lighting sales monopoly and as a LED energy saving lamp "alternative to run" because the price difference decreased rapidly in LED bulb and LED fluorescent lamp lighting price as the representative of the rapid "shrink", make the cost problem of civilian LED lighting market in the attention of consumers under almost high-end energy-saving lamps prices. 2012 18W LED fluorescent tube into the era of fifty yuan, then the second half of 2013, 18W LED fluorescent tube into the era of twenty yuan? The author analyzes from the following aspects, for reference only.

Medium power and COB light source comprehensive cost-effective

To 2835, 4014, 5730, COB series, such as the representative of the medium and large power enterprises to reduce costs quickly. At present, many enterprises in order to reduce the cost of indirect light source to reduce the cost of LED fluorescent lamp. 2835 packaging products gradually become one of the main light source of LED fluorescent tube. The 2835 series is 0.2W series of products, so the number of LED fluorescent tubes used in the same power will be reduced by more than half, both the manufacturing cost and reduce the cost of light source is obvious; from the beginning of 2013 the LED fluorescent lamp will be formed in the power series of LED fluorescent tube, 3528, 3020, 3014 series of light by LED fluorescent lamp market.

More and more suitable for the manufacture of high insulation enclosure

The early LED fluorescent lamp is made of full plastic shell, with non isolated power supply and 5 LED straw hat. Due to the problem of heat dissipation caused by light attenuation or short service life. Today, LED light source luminous flux and power density has been improved, the use of fewer light sources, the lower the cost of traditional lighting can reach the requirements of light output. At present, PHILPS, state Linsen, etc. launched by controlling photoelectric LED fluorescent tube plastic tube and glass tube structure.

Non isolated power supply will be used as the mainstream in the next few years

Because the LED driver technology 3 months update, 6 months a replacement rate, the current domestic first-line semiconductor device manufacturers are launched to switch CCM or APFC constant current mode driver IC, the cost to do the RC circuit price. The high voltage linear drive will be delayed due to technical limitations. It should be noted that the housing needs to use plastic, ceramic or glass, such as high insulation material, in order to avoid safety problems.

Here we analyze the design idea of a low cost 18W fluorescent lamp, if the use of non metal lamp body structure, so the future can choose only non isolated switching power supply and linear drive high voltage driver in the real application line because of the high technology and application limitation, we do not discuss too much. The following considerations to mass production application, please refer to the business enterprise since, only for reference: 18W LED 40W to replace the traditional fluorescent lamp fluorescent lamp as an example, the 2835 light source, do 1600LM need 96 LED light sources (1200LM generally need 76 stars, too few will have a clear spot), drive current for 60MA, the 2835 Shenzhen line manufacturers price is about 0.13 (Zhongshan also has 0.07 yuan /PCS); then beads and patch fee sum: 2835 SMD beads LED fluorescent lamp costs 0.13*96+0.015*96=13.92 yuan. If the shell is made of plastic or glass, the price will be around 5 yuan. To see my power built-in back type launch (JW-FR20W) and single end plug (JW-FR20W full voltage input pin high power factor and JW-HR18W-PTS full voltage high power factor blocking the front page / JW-LR20W-PT no flash version of /JW-HR18W-RZS economic EMI version optional):

In summary, the general situation of LED fluorescent lamp in flux under the same single lamp brighter then the lower cost; from the visual comfort, currently on the market the number to 76-96 2835/4014 beads are too bright will not comfortable. Then the total BOM cost of daylight lamp can be done within 20-30 yuan.

After a series of high temperature, constant temperature and humidity, high voltage switch cycle impact and 2 months with lamp aging test, Germany's "Puguang electric see our" high performance drive brand released a bulb in the ball, fluorescent lamps and ceiling lamps used in the ultra price driving power in the range of 1-20W. According to the subdivision can be used a variety of bulb 1-18W fluorescent lamp series, 6-20W series, 6-20W series can be applied to lamps downlight or COB package COB, due to the overall high light efficiency, light and low cost has become a choice of LED light source, and the COB package series will become one of the major LED lighting applications in the future, the COB package is also of high voltage and low current are mostly due to non isolated design makes the lamps comprehensive greatly reduced, but also can make the conversion efficiency be high, reduce heat, and improve the reliability of the lighting system.