日期：2012年7月5日

Analysis for low price LED bulbs

Although LED lights are more advanced than traditional lamps in almost every aspect, they can hardly be accepted by ordinary family due their high prices. The retail price of a 5W LED bulb, which is equivalent to 20-30W filament lamps, is between 50 yuan and 100 yuan, much more expensive than energy-saving lamps. Same as energy-saving products, the exorbitant prices made LED lighting products become articles of luxury. After nearly 15 years development, Chinese LED lighting manufacturers have gradually realized the seriousness of the problem and spent their money and energy more on developing more cost-effective LED products. Low price LED bulbs is part of the plan.

 Although LED lights are more advanced than traditional lamps in almost every aspect, they can hardly be accepted by ordinary family due their high prices.

Thank to the fierce competition, LED lighting sources, new generation LED drivers, even aluminum shells were forced to drop prices in past few years. This is a right time to produce low price LED bulbs.

 

Market followed the pyramid law. Products with high prices can only occupied a very limited space on the top end. With the reduction of prices, the market space will expand exponentially. Although low price LED bulbs may in the bottom of the pyramid, they will become a mass product that most people can afford.

 

If we can limit the cost of a LED bulb within 8-25 yuan and consequently the market price 15-35 yuan, these LED bulbs will remain in the same price level as energy-saving lamps. As the fourth generation lighting sources, LED really rapidly occupied the entire lighting market and let the filament lamps and fluorescent lamps be history.

 

The design of low price LED bulbs should follow the principle of cost reduction. Generally, LED bulbs are comprised of LED lighting source modules, constant current drivers, lamp heads, covers, cooling sections, etc. Similar construction for LED tubes. The key point is how to keep the cost down for each section. LED lighting sources should have higher lighting efficiency, lower heat generation, better cooling and more cost-effective. Constant current drivers using PSR isolated circuit, less electronic components, higher power factor. These are common sense in LED lighting industry. But it is impossible to give consideration to every aspect and lower the cost at the same time. There must some trade off.

 

 

super bright led headlamp in SMD

1. The role of a plastic patch LED Lights
SMA, surface mount adhesives, for wave soldering and reflow soldering, and is mainly used to components on the printed circuit board, the general dispensing or stencil printing method to allocate in order to maintain the components in printed circuit position on the board (PCB), to ensure that components are not lost in the transmission process on the assembly line. Paste components into the oven or welder heating reflow sclerosis. With the so-called solder paste is not the same, after a heated hardening, and then heating it will not melt, thermosetting plastic patch process is not reversible. The use of SMT chip (super bright led headlamp) adhesive effect due to the thermal curing conditions, the connecting object, the equipment used, the operating environment differ. When used according to the production process to choose a plastic patch.

super bright led headlamp in SMD

2, the composition of the plastic patch LED STREET LIGHT
PCB assembly used in the majority of surface mount adhesive (SMA) are epoxy resin (epoxies), although there are polypropylene (acrylics) for special applications. After high-speed dispensing system into the electronics industry to learn how to deal with a relatively short shelf life products, epoxy resins has become more mainstream glue technology worldwide. Epoxy resins generally provide a good adhesion on a wide range of circuit board, and has very good electrical properties. The main ingredients: the base material (ie, the main high molecular material), fillers, curing agents, other additives such as.

super bright led headlamp in SMD

3, the intended use of the adhesive patch LED TUBES
a wave soldering to prevent the components off (wave soldering)
b. reflow to prevent the other side of the components off (double-sided reflow soldering process)
c. to prevent the components of displacement and stand at (reflow soldering process, pre-coating process)
d mark (wave soldering, reflow soldering, pre-coating), printed boards and components, bulk changes, marked with plastic patch.

4, adhesive patch used classification
a dispensing type: on the printed circuit board through dispensing equipment in Sizing.
b Squeegee type: the printing of steel mesh  (super bright led headlamp) or copper mesh coated scratch sizing.

The final temperature will affect the shape of viscosity and gel point, most modern dispensing machines rely on the needle mouth or chamber temperature control device to maintain temperature above room temperature of the plastic. However, if the PCB temperature increased from the preceding process, the outline of the gel-point  (super bright led headlamp) may be damaged.

Bright LED lighting in Asia entered a golden period of development

Several Asian countries as early as in 3 to 4 years ago to LED Lights industry development and product promotion strategy, such as Japan’s twenty-first Century lighting plan”, Korean “solid state lighting plan”, Taiwan “New Century Lighting Development Plan” in China, the “semiconductor”, the” semiconductor lighting products application demonstration project” plan, these countries level of semiconductor lighting planning reflects the LED lighting industry development, industry economy and environment energy efficiency value. The countries are actively promoting the LED lighting plan, LED bulbs will be listed as priority lead-in lighting products; LED road lamp switch is also like a raging fire, and they estimated that in 2013 global bright led lighting product permeability will further enhance the nearly 2 percent.

Bright LED lighting in Asia entered a golden period of development

In 2010 China’s LED industry total production value achieves 120 million, amount to more than 4000 enterprises, over the past 5 years the average growth rate of 35%, more than 4000 enterprises, over the past 5 years the average growth rate of 35%, more than 35%, more than 2010 40%. Within in the next 5 years the market size will reach 500 million yuan. Application of LED products space wide, from lighting to ordinary furniture, lighting, and then to the city landscape lighting engineering, lighting, decorative lighting and other fields, the market potential is tremendous. Nearly 10 years of LED cost every year in the fall of 2015, the price of product LED has the potential to reduce to 1/5 in 2010, when the general lighting market penetration rate will rise to 50% in 2012, with more than 75% LED lighting market share.

LED lighting industry in Asia entered a golden period of  development, a positive attitude in all enterprises for the bright led lighting is constantly inject new elements and more intense competition. The traditional lighting companies actively develop the LED lighting product line, to actively develop the LED lighting product line, to the semiconductor manufacturing enterprises as the main business focus on the LED lighting to enhance the quality, the great potential of the emerging industry to stimulate a large number of rising star, its fast catching up with the pace of the first enterprises can not lax. Under the constraints of a variety of factors, Asia bright led lighting industry inevitably go through a period of chaotic competition period.