2013年10月31日星期四

cob led high bay light made in China

 
The parameter of LED High Bay 80W CL3:
 
LED type LED 1w high power
Power (W) 80 watt
Dimension ¢300*310mm
Input voltage(V) 85~265V AC
Color index (CRI) ≥75
Efficiency ≥85%
Frequency  (Hz) 47 to 63Hz
Decline 3% within 3000Hrs
Life time (Hrs) ≥35,000H
Humidity 5 to 95 R.H.
Work temperature -20+55
Stock temperature -40+85
Power factor (PF)  ≥0.95
Warranty 2-3 years for different price
Certificate CE  FCC  RoHS

More info you can visit:http://www.lead-lighting.com/led--high-bay-light/led-high-bay-light-80w-cl3.htm















LED light high bay made in China for sale


The parameter of LED light high bay CL4:
LED type COB
Power (W) 100 watt
Dimension Ф205*132mm
Input voltage(V) 85~265V AC
Color index (CRI) ≥75
Efficiency ≥85%
Frequency  (Hz) 47 to 63Hz
Decline 3% within 3000Hrs
Life time (Hrs) ≥35,000H
Humidity 5 to 95 R.H.
Work temperature -20+55
Stock temperature -40+85
Power factor (PF)  ≥0.95
Warranty 3 years
Certificate CE  FCC  RoHS


More info you can visit:http://www.lead-lighting.com/led--high-bay-light/led-high-bay-light-100w-cl4.htm

30w led high bay light made in China for sale

 

The parameter of LED High Bay Light 200 Watt CL2:
LED type COB
Power (W) 200 watt
Dimension ¢250*230mm
Input voltage(V) 85~265V AC
Color index (CRI) ≥75
Efficiency ≥85%
Frequency  (Hz) 47 to 63Hz
Decline 3% within 3000Hrs
Life time (Hrs) ≥35,000H
Humidity 5 to 95 R.H.
Work temperature -20+55
Stock temperature -40+85
Power factor (PF)  ≥0.95
Warranty 3 years
Certificate CE  FCC  RoHS

More info you can visit:
http://www.lead-lighting.com/led--high-bay-light/ld-hbl-30w-cl1+led-high-bay-light-30w.htm




































                                                                                 

200w led high bay light made in China

The parameter of LED High Bay Light 200 Watt CL2:
LED type COB
Power (W) 200 watt
Dimension ¢250*230mm
Input voltage(V) 85~265V AC
Color index (CRI) ≥75
Efficiency ≥85%
Frequency  (Hz) 47 to 63Hz
Decline 3% within 3000Hrs
Life time (Hrs) ≥35,000H
Humidity 5 to 95 R.H.
Work temperature -20+55
Stock temperature -40+85
Power factor (PF)  ≥0.95
Warranty 3 years
Certificate CE  FCC  RoHS

More info you can visit:
http://www.lead-lighting.com/led--high-bay-light/ld-hbl-200w-cl2+led-high-bay-light-200w.htm




























ledhighbaylight: When does the regular season of LED lighting indus...

ledhighbaylight: When does the regular season of LED lighting indus...: Beijing time on October 30, 2013 ,2013 -2014 season NBA regular season begins, led lighting industry compared to the regular season , N...

When does the regular season of LED lighting industry truce ?


Beijing time on October 30, 2013 ,2013 -2014 season NBA regular season begins, led lighting industry compared to the regular season , NBA was not so intense. Needless to say , LED street lighting industry in recent years is the rise of the rookie. It beats saving , pushed to the incandescent domination era. Whether it is technical innovation, or the public awareness of energy conservation are increasingly being respected . But "LED lighting when it ushered in the finals ," This question has been stalking the industry .
 
LED VS policy
 
2013 third quarter , the relevant policy focused on the field of energy saving , including the central government introduced two documents and Anhui "energy-saving environmental protection industry development plan ," which three papers are clearly promote the development of semiconductor lighting , and propose specific measures to target .
 
Central released two documents , " the State Council on Accelerating the development of energy-saving environmental protection industry ," and " About intensify its efforts to ensure the realization of 2013 emission reduction targets and tasks ," which will cultivate leading enterprises , promote green lighting energy key projects, promoting energy efficient lighting products and put forward specific objectives and measures. In addition , Anhui in the " energy-saving environmental protection industry development plan Anhui notice" will also be semiconductor lighting industrial engineering and application engineering as a priority .
 
In addition , the Ministry issued the " industrial development of key technologies Guidelines ( 2013 ) ," clearly put forward the led chip , phosphor and other aspects of the implementation of the State Council as a key technology innovation-driven strategy, industry key common technologies . And earlier this year, following the abolition of the former Shenzhen LED industry, "second five " plan later, in the newly adopted " Shenzhen public body" second five " action program for three years ( 2013-2015 ) " and re-submit a comprehensive promotion of LED lighting, causing concern in the industry . . LED industry is currently booming period , despite the severe overcapacity , but in the separatist warlords hard world , the critical time , the brutal competition match for the future market of great temptation .
 
LED VS Price
 
This year , LED industry trend of price war intensified, many international and domestic enterprises have introduced low-priced products , participate in price competition. Philips announced the world's leading factory lighting , led light bulbs generally last at least a year, compared with the new price drop 2 percent , setting off a price war LED bulb brands . Taiwan Everlight also refused to yield, on July 25 announced a new promotional package LED bulbs 999 yuan , the price is equivalent to 33 per cent cut . Coincidentally , Taobao electricity providers even played led bulb 7.5 yuan also shipping slogans. For a time , causing uproar in the industry ! Price competition, in addition to faiths other than a direct impact on corporate profits is getting smaller and smaller , for the well-funded , large-scale enterprises, the tip of the iceberg . However, for most small businesses , stalls can be described as a major event !
 
According to the information and the world economy , China's economic trends , lighting has become a highly profitable era past tense , low profit has become the norm , coupled with the decline of the real estate industry , for the lighting industry will inevitably result in a significant impact , the industry growth rate will be significantly lower than last year , the price index continued to decline in recent years,
LED street lighting products, this year face a more serious price war.
 
Led lighting which caused the main factor is the price war intensified , compared to the stability of the market to expand the base, so that the sharp increase in production capacity of the market is difficult to digest. Along with the first quarter of this year, more than led enterprise continuous market, the market in June this year, the pressure will be more appropriate to show it. And the introduction of so let house prices in sluggish trading volume in a long time period . Chinese porcelain library experts believe that although LED home lighting technology upgrade prices, but given the demand for LED lighting market volatility associated with the real estate industry , LED lighting industry in the year is not yet over- optimistic.


More info you can visit:http://www.lead-lighting.com/products/bid31-1.htm

When do LED Lighting Enterprises break away from predicament?


Under the national and local government subsidies, the LED street lighting industry have a rapid development. But excess capacity, lack of core technology has been plagued by problems such as the LED industry, under this background, the foshan lighting enterprises how to out of the woods?
On the 25th in zen city held "foshan city zen LED lighting products promotion cycle" launching ceremony and LED lighting and the health lecture, the reporter understands, the current LED market has not fully open, and product application of rapid advance, there is no industry standard, consumer demand to update factors such as the lighting industry, the virtuous development of the industry still relies on enterprise formulates the long-term development strategy.
Application to walk in front of the standard and research and development
"Apart from the LED industry, take the field of general lighting, Shanghai middle and primary school classroom lighting standards at the turn of the century is still using the national standard of the 1980 s." Associate professor of fudan university, college of information of light source and lighting engineering Lin Yandan revealed the reality of our country's lighting application can't keep up with industry standard.
LED products as the home prices have plummeted, most products has been increased from 20 ~ 30 yuan to 20 yuan. In foshan lighting lamps and lanterns association secretary general zhang, prices caused profits compression are the secondary factors which restrict the development of the industry. "Is the main factors LED industry there is still no uniform standard, so products can't be unified assessment."
"China's LED industry application too fast, and basic research don't keep up with the problem." Leading Lin Yandan said China lighting industry application, research lag behind. Abroad, she says, the latest research direction are mainly concentrated in electrical lighting, building lighting, and other areas of the segmentation. "It needs the support of basic research, but also requires close contact and cooperation with industry."
Health or into the appraisal system
"Health is likely to become a new kind of lighting standard, at least in some measure to achieve minimum domain values." Lin Yandan and her fudan university institute of electric light source and lighting research have been engaged in the visual system. Lin Yandan is put forward, make full use of the LED color is rich and dimming the advantage of building intelligent lighting system, not only for the user to create a comfortable and healthy lighting environment, and for the treatment of diseases such as alzheimer's disease, sleep difficulties have certain help.
"Industry is moving forward rapidly, creating new demand, in such a background, may make people more and more attention on health." Guangdong k o lighting co., LTD., general manager wu yulin said, "people of different ages for different lighting needs, and how to meet the needs of the industry's biggest attraction."
Industry transition depends on entrepreneur
Nationally, foshan LED industry development and layout is relatively perfect, not only has a group of industry leading enterprises, there are also many small and medium-sized enterprise aiming at new trends of the industry development, ready to share. Zen city, for example, semiconductor lighting industry as a buddhist city promoting the upgrade of industry and city, encourage the development of industry in the past two years at home and abroad market slowdown case, still keep good state of development, realize the output value of 7 billion yuan in 2012, research and development strength increasing, 350 authorized patents.
"LED street lighting industry is still in its infancy stage, basic research is also preliminary stage." Lin Yandan said, as the policy support to increase this year, the semiconductor lighting industry will have a clear recovery process. But, she notes, along with the development of the industry, research and development investment is needed to launch a substantial new products, foshan entrepreneurs don't focus on the present small profit, want to look before I can go further.


More info you can visit:http://www.lead-lighting.com/products/bid31-1.htm

2013年10月29日星期二

ledhighbaylight: How to improve the brightness of the LED street li...

ledhighbaylight: How to improve the brightness of the LED street li...: Through which the chip manufacturing process technology, can improve the chip and the optical efficiency of the luminous intensi...

How to improve the brightness of the LED street lighting




Through which the chip manufacturing process technology, can improve the chip and the optical efficiency of the luminous intensity?
Depends on the brightness of the LED street lighting epitaxial method and the extension of good quality or in the chip manufacturing process can also take a different approach to improve some of the light intensity is to enhance the external quantum efficiency, but to a limited extent. Now use the most convenient approach is to make the pan surface roughening processes. The principle is to increase the roughened light emitting area. This method applies to yellow, green, red Pu, Pu yellow. Such GaPa substrate wafer, in addition to the infrared LED method may also be used. This method can generally be increased by 30%.
Another way is covered with a layer antireflection coating. Since the light emitting diode is relatively high refractive index of the crystal, when the light is directed to the crystal surface, the crystal and the air will refracted at the interface. If the refractive index of the crystal is assumed N1, incident angle θ1, the refractive index of air is N2, when the refraction angle θ2 shown in Figure 1:



Obviously, when θ1> = θC all the light is reflected inside the crystal, if the LED crystal and the intermediate refractive index between the air and plated with a dielectric layer to increase the critical angle θC. Such as GaP of N1 = 3.3 if the dielectric layer is not critical angle θC = 17.7 degrees. Covered with a layer of N2 = 1.66 θC dielectric layer may increase to 30.3 degrees, the light intensity can be increased to 2.5 times.
Current through the process and structural improvements can improve the optical efficiency chips, summed up in the following several effective ways:
(1) a transparent substrate technology
A GaAs substrate, the
LED street lighting is usually material, but a GaAs light-absorbing materials, LED emitted light is absorbed it, reduces the light efficiency. For this reason, a PN junction of the epitaxial after etching method using a GaAs substrate is then removed under high temperature conditions of the GaP light paste will do on the substrate so that the light emitted by the PN junction is reflected off the metal base plate, to improve the optical efficiency .
This method produced InGaAlP four yuan chip, the GaAs substrate is removed after the first layer of metal paste method produced
Specular reflective layer, and then paste the substrate, so that the optical radiation toward the substrate to the surface, so that the chip light efficiency.
(2) the chip surface roughening method
Since the refractive index of GaN η1 = 2.3, and air refractive index difference between the larger η1 = 1, only the remaining reflection critical angle
25 °, so that most of the light can not escape into the air, the light efficiency is low. Therefore, by changing the air interface of GaN geometry, increases the critical angle of total reflection, to improve the light efficiency, which is through the chip surface roughening methods.
    
(3) Chip trapezoidal structure. CREE chip companies have a trapezoidal structure also increased after the light intensity, shown in Figure 3. Due to this structure of the chip edge portion of its total reflection critical angle increases, the photon escape rate, and emitted from the bowl chamber, light intensity and improve light extraction efficiency.


More info you can visit:http://www.lead-lighting.com/products/bid31-1.htm