LED Panel Light Fixtures

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What is Blue LED?

Means a blue light emitting diode. The center of the emission wavelength is around 470nm. For blue display portion of the light source, LED display, the blue light source and the back of the liquid crystal panel according to the light source of the lighting apparatus and indicator. Using the white light can be obtained with the composition of the phosphor material. The white LED is generally used a structure of a blue LED and a fluorescent material in combination. The opportunity to be widely used in blue LED, Nichia Chemical Industries in December 1993, the first time in the industry to develop a light intensity above 1cd varieties. Before this, no the blue high purity and having a the utility light intensity LED. Therefore, the large-size screen can not be achieved using LED full color display. A blue LED using gallium nitride (GaN) based semiconductor material. Developed blue LED previously popular class semiconductor with a zinc selenide (ZnSe) Since the GaN semiconductor December 1993 high brightness blue LED was developed, the mainstream of the blue LED using GaN class a semiconductor product. Roma blue LED light scenarios. The blue LED's are constructed as overlapping laminated on the surface of the sapphire or SiC plate etc., aluminum nitride (AlN) semiconductor layer and the GaN-based semiconductor layer. Set known as the active layer, the blue light portion of the configuration of the p-type GaN-based semiconductor layer and the n-type GaN-based semiconductor layer overlap. pn junction structure must be used in the production of high brightness LED. A long time ago is mainstream structure GaN material other than red LED, pn junction. Before the launch of the 1993 high brightness blue LED using GaN-based material is difficult to achieve the pn junction. The reason is made of n-type GaN-based semiconductor layer, though relatively simple, but the production of the p-type GaN-based semiconductor layer is more difficult. Thereafter, by using the multi-quantum well structure, and to further improve the quality of the GaN-based semiconductor layer on the configuration of the GaN-based semiconductor layer in the p-type GaN-based semiconductor layer and the n-type GaN-based semiconductor layer, the light intensity obtained greatly improved.

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What is PWM dimming?

What is PWM dimming? We understand the basic knowledge of the LED light source and its driving demand. In the second section, we discuss when a constant current buck converter can be used as a the LED conversion mode drive, why it can be your first choice. In the third part, we study a large LED display and other converter topologies space. Now, in the concluding chapter of this series, of the perspective turned to how best to achieve the dimming function. Whether you use Buck, Boost, Buck-Boost or linear regulator to drive the LED, the common thread is a drive circuit to control the light output. Some applications simply to achieve the "on" and "off" to function, but more application needs to adjust the brightness of the light from 0-100%, and often have a high degree of accuracy. Designers have two choices: the average linear regulator LED current (analog dimming), or use the switch circuit relative to a high enough frequency in the human eye discriminating work to change the light output (digital dimming). Using pulse width modulation (PWM) to set the period and duty cycle  is probably the most simple method of digital dimming, and Buck regulator topologies are often able to provide the best performance.

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The use of LED light fixtures aluminum plate

The use of LED light fixtures aluminum plate,

Usage: power hybrid IC (HIC). Audio device: input, output amplifier, balanced amplifier, audio amplifier, preamplifier, power amplifier. 2 Power supply equipment: a switching regulator `DC / AC converter` SW regulator like. 3. Communication electronic equipment: high-frequency amplifier `filtering appliances` transmitter circuit. Of office automation equipment: motor drive. Car: electronic regulator `igniter` power controller. 6 computer: CPU board `floppy drive` power supply unit. The power module: converter `solid relay` rectifier bridges.

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LED light fixtures heatsink selection and design points

LED light fixtures heatsink selection and design points In order to design or select a suitable radiator products, not only to ensure the appearance of the radiator, easy processing, low price is more important to meet the cooling requirements of the LED chip, LED light fixtures working temperature is kept within the specified range within. First, we look at the factors that affect the junction temperature of the LED light fixtures . According to our experience, the factors that affect the LED junction temperature as summarized below for your reference: 1 LED light fixtures board - LED light fixtures  power: the greater the power junction temperature of the higher Chip luminous efficiency: the same power, the higher the luminous efficiency of the chip, the less heat production, lower junction temperature The quantity and distribution of the lamp beads: the same power, the greater the aluminum plate lamp beads more and more uniform distribution, the junction temperature is lower LED aluminum plate radiator connection (thermal resistance between the aluminum plate and radiator) - Aluminum: aluminum plate radiator directly connected than the aluminum plate plus aluminum (such as aluminum plate is too small, can not be directly connected with the radiator, with external aluminum plate) and then connected to the radiator LED junction temperature low; aluminum plate, aluminum plate surface flatness the better generally the lower the junction temperature Connection: In the case of mechanical connection, apply a small amount of thermal grease LED junction temperature is generally lower Radiator - the smaller the heat sink thermal resistance LED junction temperature is lower Ambient temperature - the lower the ambient temperature of the LED junction temperature is also lower As can be seen from the above influencing factors in order to reduce the junction temperature of the LED light fixtures , we must first choose the light board, in the case of a certain power, LED chips higher luminous efficiency, less heat generated when the work, so try to use light-emitting chip making high efficiency light board. Light board and a drive power to determine the case, in addition to the optimized connection way affect the LED junction temperature of the main factors is the size of the selected radiator thermal resistance, the smaller the thermal resistance of the radiator, the lower the junction temperature of the LED, the longer lamp life. Influencing factors on the thermal resistance of the heat sink earlier introduced in detail, the user can according to their actual requirements and communicate with radiator manufacturers, application of the knowledge of the thermal resistance of the heat sink after a reasonable analysis and experience, it is best to establish a reasonable mathematical model, or design an appropriate LED light fixtures heat sink products.

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The structure of the LED light fixtures aluminum plate Aluminum

The structure of the LED light fixtures aluminum plate Aluminum

CCL is a metal circuit board material, composed by a copper foil, the thermal insulating layer and the metal substrate, and its structure is divided into three layers: Cireuitl.Layer line layer: the CCL line equivalent to the ordinary PCB copper foil thickness loz to 10oz. DiELcctricLayer insulating layer: insulating layer is a thermal insulating material of the layer of low thermal resistance. BaseLayer grassroots: a metal substrate, typically aluminum or selected copper. Aluminum Copper Clad Laminate and traditional epoxy glass cloth laminated board. Circuit layers (i.e. the copper foil) are usually formed after etching the printed circuit, so that the various components of the element are connected to each other, under normal circumstances, the circuit layer is required to have a large current carrying capacity, which should use thick copper foil thickness of 35μm ~ 280μm; thermal insulation layer is where the core technology of the aluminum plate, it is usually filled by a special ceramic special polymer, thermal resistance, excellent viscoelastic properties, the ability to heat aging, able to withstand the mechanical and thermal stresses. The thermal insulating layer of the high performance of the aluminum substrate is the use of such technology, it has extremely excellent thermal conductivity and high strength, electrical insulation properties; metal substrate is an aluminum plate support member required to have a high thermal conductivity, typically an aluminum plate You can also use a copper plate (copper which can provide better thermal conductivity), suitable for drilling, punching and cutting conventional machining. The PCB material compared to the other material incomparable advantages. Power components, surface mount SMT public art. No radiator, greatly reduce the cooling effect is excellent, good insulating properties and mechanical properties.

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What is the standard LED Source?

We know that the illumination light source a great impact on the color of the object. Different light sources, each have a spectral energy distribution and color, color rendering their irradiation surface change. In order to unify the understanding of color, we must first prescribed standard lighting sources. Closely related to the color of the light source and the color temperature of the light source, the CIE provides four standard lighting color temperature standard: Standard illuminant A: on behalf of the the full radiator 2856K emitted light (X0 = 109.87, Y0 = 100.00, Z0 = 35.59); Standard illuminant B: on behalf of the correlated color temperature of about 4874K direct sunlight (X0 = 99.09, Y0 = 100.00, Z0 = 85.32); Standard illuminant C: represents the correlated color temperature of about 6774K average daylight, the light the color approximation cloudy sky daylight (X0 = 98.07, Y0 = 100.00, Z0 = 118.18); Standard illuminant D65: represents the correlated color temperature of about 6504K daylight (X0 = 95.05, Y0 = 100.00, Z0 = and 108.91 in 1990); Standard illuminant D: represents the standard illuminant D65 other than daylight. CIE standard illuminant provisions is specific spectral energy distribution, the color of the light source prescribed standards. It does not have to be provided directly from a light source does not necessarily use a light source to achieve. In order to achieve the the CIE standard specified lighting requirements, but also must provide for the standard light source spectral energy distribution of the specific standard illumination requirements. CIE recommended the following artificial light source to achieve the standard lighting provisions: Standard light source A: The color temperature of 2856K inflatable spiral tungsten filament, the light color yellow. Standard light B: a color temperature of 4874K, by DG A light source plus cover B liquid filter. The light the color quite at noon daylight. Standard illuminant C: a color temperature of 6774K, by DG A light source plus cover C liquid filter, the light the color equivalent Clouds sky light. CIE standard illuminant A, B, C by a standard light source A, B, C achieved, to simulate typical daylight standard illumination D65, CIE is not recommend the appropriate standard light. Because its spectral energy distribution in the current can not be accurately achieved by a real light source. Ongoing international work on the development of the standard light source corresponding to the standard illuminant D65. The now developed three analog at D65 artificial light were as follows: the high pressure xenon arc lamp, a band filter with a filter of incandescent and fluorescent. Their relative spectral energy distribution and D65 have found band filter is a high-pressure xenon arc lamp provides the best analog band filter of the analog of the incandescent lamp in the ultraviolet region is still less than ideal, the analog of the fluorescent lamp is poor . In order to meet the needs of the the Narrow Bianse production activities, are used by the incandescent lamp of the fluorescent lamp and with a filter composed of a mixed light source, called a D75 light source. Its color temperature of 7500K. The main use of the raw cotton rating, and fine color vision work.

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Philips Lighting and their LED chips technical advantages

Philips Lighting is provided for all areas of advanced energy-efficient solutions, including: roads, office, industrial, entertainment and home lighting. Build the future of the new lighting applications and use of technology, Philips is also among the leadership position, such as LED technology. The company's main products include xenon car lights, road lighting, mood lighting.     Philips to establish leadership in the field of LED chip is mainly due to the acquisition of Lumileds from Agilent and Philips, Lumileds joint venture in 1999, 2005 Philips acquired the company completely. Philips Lumileds is the world's leading high-power LED lighting solutions provider. The company has always been committed to promoting the development of solid-state lighting technology, environmentally friendly lighting solutions, helping to reduce carbon dioxide emissions and reduce the need for plant expansion, the company's leading light output, efficacy and thermal management is long-term efforts in this regard a direct result. The Philips Lumileds LUXEONLED provide a new choice for shop, outdoor, office, school, and home lighting solutions. Philips Lumileds offers a variety of LED chips and LED packaging, red, green, blue, amber, and white LED products.     Technical advantages     1, unique heat sink design and Si-Submount "Flip-Chip" packaging technology;     2, has a first-mover advantage in high-power white light illumination die.     2008-2009 Enterprise     Philips sales growth of 17% in 2008 mainly to support the acquisition of Genlyte and Color Kinetics. 18% of the adjusted portfolio changes and adverse exchange rate effects of 4% of sales in 2007, up 3%. This increase was primarily due to continued sales growth of energy-efficient lighting solutions,. The company's diverse product areas to maintain a considerable level of profitability in the second half of 2008, the deteriorating economic situation in the case of sharp drop in demand for automotive, consumer goods and construction industries. Compared to 2007, sales of green products grew by 12 percent to 2.97 billion euros. This increase was primarily from an increase in sales, including solid-state lighting applications, as well as the design of product innovation and strong growth in application solutions based in 2008 in the SSL field income increased 6 percent to 470 million euros.     From a regional point of view, in the mature markets, sales declined slightly compared to 2007; in North America and Western Europe, the deteriorating economic environment in the automotive, consumer goods and building lighting market losses more than offset gains in energy-efficient lighting solutions. Emerging market sales increased 8% where all the business in India, Eastern Europe and the ASEAN countries (in addition to a special lighting applications), have gained a strong double-digit sales growth.     2008, interest, taxes, depreciation rate of € 538 million accounted for 7.6% of sales compared to 184 million in 2007, including 221 million euros of restructuring costs and € 041 million of acquisition-related costs. 2008 earnings also impact by mature markets gross margin compression and benefit from acquisitions, partially offset by the impact of a slowdown in demand for automotive and architectural lighting field.     Company EBIT in 2008 amounted to 165 million euros, 675 million euros in 2007. 2008, PHILIPS Lumileds declared a € 232 million non-cash goodwill impairment, which is mainly due to weak demand in automotive, display and mobile phone market.     The before financing cash flow activities including cash payment of 1.825 billion euros, mainly related to the acquisition of Genlyte expenditures related to the acquisition in 2007 amounted to 1.162 billion euros, mainly related to the acquisition of PLI and Color Kinetics. In addition to the above acquisition related payments, cash flow compared to 2007 due to the improvement of working capital requirements before financing activities increased by 173 million euros, due to higher investment in solid-state lighting solutions, the company's net capital expenditure also increased by 054 million euros.     In view of the economic outlook may continue to deteriorate, PHILIPS think that 2009 was a very challenging year, the company not only to keep the amount of the contract for the construction and automotive markets, we must strive to maintain consumer confidence in most emerging markets. In this environment, PHILIPS expand the restructuring plan will be active, choose more effective cash management measures to further reduce the (fixed) costs last year, and to ensure a favorable balance sheet presented to investors in 2009. To achieve sound financial management, the company will stop the share repurchase program, In addition the company will also continue to closely manage the situation in the market and competition. PHILIPS hope through strict cost and cash management, coupled with strong brand advantage and balanced portfolio, to enable them to tide over the current economic turmoil, the conditions to be economic recovery, and to be able to achieve more powerful target.

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The advantage of LED Tube Light Fixtures

Ten Advantages of LED Tube Light Fixtures

1.  Environment-friendly lighting Traditional Tube Light Fixtures lamps contain a lot of mercury vapor, broken mercury vapor will evaporate into the atmosphere. LED lamp does not use mercury, and LED products do not contain lead, play a protective effect on the environment. The LED lamps recognized green lighting of the twenty-first century.

2. Less fever phenomenon Traditional lamps will produce a lot of heat, LED lamps are energy all converted to light energy, without causing a waste of energy. File, the clothing will not fade phenomenon.

3. No noise LED lamps do not produce noise, is a good choice for the occasion using precision electronic instruments. Suitable for a library, offices and the like occasions.

4. Eye protection Traditional Tube Light Fixtures lights use AC 100-120 times per second strobe. LED Tube LED constant current work is the direct conversion of AC to DC power, effectively reducing LED decay, quick start, no flicker, eye protection.

5. no mosquito trouble LED lamps do not produce ultraviolet, infrared and other radiation, no mercury and other harmful substances, and less heat. Therefore will not like traditional lamps, there are a lot of mosquitoes around next to the light source. The Indoor become more clean sanitation and clean.

6. Wide operating voltage range Traditional Tube Light Fixtures lamp is lit by a high voltage rectifier release, you can not light up when the voltage decreases. LED lamps can be lit in a certain range of voltage (eg, AC 85-265V)

7. power saving and long life LED lamp power consumption is less than one-third of traditional Tube Light Fixtures, life expectancy is 10 times the traditional Tube Light Fixtures consistent with the traditional Tube Light Fixtures lamp brightness, the normal life of more than 30,000 hours, saving up to 70% can be long-term use without replacement, reduce labor costs, more suitable for occasions that are difficult to replace.

8. solidity LED lamp body using epoxy instead of the traditional glass, more robust, secure, LED will not even hit the floor easily damaged, you can safely use.

9. General LED lamp appearance, size and the traditional Tube Light Fixtures lamp as an alternative to traditional lamps.

10. colorful Make full use of the advantages of LED colorful production of light-emitting color lights.

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Outdoor LED lamps radiator design

The radiator is a member of the LED lamps very critical, its shape, size, heat dissipation surface area must be designed to be consistent to the benefits, the radiator is too small, the LED lamp operating temperature is too high, influence the light-emitting efficiency and lifetime, the radiator too the consumption of materials increased the cost and weight of the product, so that the product competitiveness decline. Appropriate design led lamp radiator is essential. Radiator design has the following parts: 1. Clear LED lights require cooling power. 2 design radiator with some parameters: the specific heat of the metal, the thermal conductivity of the metal, chip resistance, heat sink thermal resistance, ambient air thermal resistance. 3 to determine the type using the bulk of the (natural convection heat, strong wind cooling, heat pipe cooling, as well as other heat cooling way.) From the cost comparison: natural convection cooling cost a minimum, strong wind cooling medium, heat pipe cooling cost, jet refrigeration the highest cost. 4 to determine the the LED lamps maximum permissible working temperature (ambient temperature plus temperature rise permitted lamps) 5 to calculate the volume of the cooling area of the radiator. And determining the shape of the radiator. The radiator with LED lights combined into a complete lighting and power to work more than eight hours, check the temperature of the lamp at room temperature 39 ℃ - 40 ℃ environment, meet the cooling requirements to see if the test calculations are correct, if not meet the conditions of use, will have to recalculate and adjust the parameters. Radiator with lampshade seal to do to pad waterproof, dustproof, lampshades, radiator between the aging of the rubber mat or rubber mat, fastened with stainless steel bolts, so sealed waterproof, dustproof through these four point Precautions Referring China promulgated the latest outdoor lighting technical specifications, as well as urban road lighting design standards, outdoor lighting designers in the most basic knowledge essential.

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LED Temperature characteristics

LED Temperature characteristics have two points as below,

(1) LED soldering temperature should be below 250 ℃, soldering time between 3 ~ 5S. Want to be taken to avoid the LED temperature is too high to damage the chip. (2) the LED brightness output inversely proportional to temperature, the temperature not only affects the brightness of the LED, also affect its life. Use to minimize circuit fever, and to do a certain amount of heat processing.

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The lighting ways of LED Panel Light Fixtures

LED lighting technology is no longer only concerned about the luminous flux, energy efficiency, price, color rendering index (CRI) of four factors, LED combination lamps derivatization lighting quality (light quality) issues become another impact LED whether universalization of the more important factors for successful entry into the consumer market. LED panel light is a backlight technology used in new lamps for lighting design, its advantages of high light efficiency, brightness uniformity and the large size of the surface light source close to natural light, with the the splicing technology when the device, to be completed by a large area without access 120 degrees wide seam stitching, light-emitting angle backlight module technology prism sheet, light guide plate, diffuser sheet, carried out the angle of refraction and aggregation processing, light angle the secondary optical processing an average of 140 degrees, than traditional light copper frame glare index lower than copper frame lights, new light source quality.

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LED Spotlights is the same as LED Flood Light

1. What is LED Spotlights? LED Spotlights (LED Downlight), also known as spotlights, projection lights, searchlights, etc., mainly used for architectural decoration lighting purposes, as well as commercial space lighting with decorative ingredients heavier, its appearance round parties generally have to consider the reasons of heat, and therefore its shape with the traditional Spotlights there are still some differences. 2.  LED Spotlights characteristics: The market used LED Spotlights basically selection 1W high power LED (each LED element with a high light efficiency lens made of PMMA, the main function of the secondary distribution of the LED light, that is, two times optical), there are a small number of companies because of the cooling technologies handled well, and use 3W or higher power LED. Suitable for large occasions cast lighting, buildings and lighting. Spotlights what things need to pay attention to it? High purity aluminum reflector plate, the light beam is the most accurate, the best reflection effect. Symmetric narrow-angle, wide-angle and asymmetric light distribution system. Behind open-style lamp replacement and maintenance is simple. Lamps are with the scale plate to facilitate the adjustment of illumination angle LED Spotlights control via built-in microchip can not control use in the small engineering applications, to achieve a gradual transition, color flashing, random flashing, the gradient the alternating dynamic effects can also be controlled by DMX chase, scan results. Currently, the main application spaces about: single building, historical buildings exterior lighting, building light outside through lighting, indoor local lighting, green landscape lighting, billboard, medical culture and specialized facilities such as lighting, bar, discos and other entertainment atmosphere, lighting and so on. 3. what is the LED floodlights The LED floodlights point light source is an irradiated uniformly in all directions, it illuminated area can be adjusted in the scene showed the icon of a regular octahedron. The floodlight is in effect, making them the most widely used as a light source, standard floodlights used to illuminate the entire scene. Floodlights in the scene can be applied to produce better results. The floodlights in effect diagram application of the most widely used as a light source, the scene with floodlights coordinating role, to the birth of the good results. From a specific point in all directions uniformly illuminated objects, and use it to simulate the light bulbs and candles but the best. Floodlights can be placed in the scene anywhere. For example, can be placed in the camera range outside or inside of the object. The floodlights use many different colors in the scene in the distance is very common. These floodlights can be dark projection and mixed model. As floodlights irradiation range is relatively large, so floodlight irradiation effect is very easy to predict, and this light there are many auxiliary purposes, for example, the floodlight is placed in a position close to the surface of the object, the object will be surface on to produce a bright light. It should be noted that the floodlights can not establish too much, otherwise the effect of the map will be very flat and expressionless. So to the usual effect picture production, more attention to appreciate the impact of the light-sensitive lighting parameters and layout of the entire effect diagram scenes accumulate more experience, master the mix of good lighting techniques. Four floodlights characteristics: floodlights from a specific point in all directions uniformly illuminated objects, and use it to simulate the light bulbs and candles but the best. Floodlights can be placed in the scene anywhere. For example, can be placed in the camera range outside or inside of the object. The floodlights use many different colors in the scene in the distance is very common. These floodlights can be dark projection and mixed model. As floodlights irradiation range is relatively large, so floodlight irradiation effect is very easy to predict, and this light there are many auxiliary purposes, for example, the floodlight is placed in a position close to the surface of the object, the object will be surface on to produce a bright light. In fact, there is no difference only power sample sizes, the angle is not the same, the appearance of the product is the same, making industry is the same as Just not the same name are reflect the effect of surface.

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The power is not the most parameter when you buy LED Lights

As consumers have long been accustomed incandescent the brightness measure power (W), so now see lighting products asked W, this view is actually a big mistake.       Even can replace the LED lights of the same wattage, and also because of the different manufacturers, and the brightness and power consumption are different.       This brings consumer confusion in the use of, but also led to a debate among manufacturers for product performance. Even lead consumers to look at cheap prices and buy high wattage low brightness products, set up obstacles to the popularization of LED lights.       To prevent this phenomenon, Fang Tian here to buy LED lights when the lumens as the reference standard. Lumens represented by the sum of the the visible luminous flux emitted from the light source. Lower power consumption lumens higher the luminous efficiency of this product is the higher, the better the performance of the product.       Originally, the energy-saving LED products is a selling point advantage did not reach the energy-saving effect, so purchase when Only power is very wrong. To price lumens parameters to make a purchase. Buy a low power, high lumens, affordable is an affordable LED lighting products.

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LED lighting can save up to 85% energy

Before the end of the United Nations Conference on Sustainable Development ("Rio +20" Summit), the Climate Group (The Climate Group) released an independent global technical test results show the LED road lighting can save up to 85% energy. The pilot project also found that the pilot urban residents prefer LED lighting that its social and environmental benefits and taste. Mark Kenber, CEO of The Climate Group, said: "This report clearly indicates that the LED technology has a wide range of applications in various towns of the global conditions. Fully turned to the latest energy-efficient LED lighting solutions to save a lot of energy, and reduce carbon dioxide emissions and contribute to the improvement of the urban environment. "Harry Verhaar, Philips Lighting global president of public and government relations matters, said:" We believe that by promoting lighting market transformation, Philips LED lighting solutions to help the building of livable city, to the benefit of city residents and visitors. " LED lighting is not only beneficial for urban residents, have a huge role in the global environmental cause. If you double the global lighting efficiency, the impact on the climate is equivalent to all the EU electricity and thermal energy production emissions of greenhouse gases reduced by half. And other energy-saving technologies, energy-efficient lighting will promote global prosperity.

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How to choose good IC Driver for LED lighting?

In the field of LED lighting, to reflect the characteristics of energy efficiency and long life LED lights, the correct choice of LED driver IC is essential. No good driver IC match the advantages of LED lighting can not be reflected. In use LED driver IC, should pay attention to what the performance indicators and use it? LED lighting in recent leap in the development of LED as a light source of green cleaning is widely recognized. LED light source, long life, energy saving, easy application, the use of low-cost lighting in the family will get a flood of applications, OSRAM optical semiconductor companies. Survey in 2008, the global annual home lighting lampholders shipped about 500 one hundred million. LED light source technology matures, lumens per watt LED rapid growth, prompting its diminishing price cuts. 1W LED light source, for example, in the spring of 2008, the price is one-third of the price in the spring of 2006, will be reduced to a quarter in 2006, in the spring of 2009. Mass market demand and steady growth of the green LED lamps will be super tsunami in the consumer electronics market in the integrated circuit industry Following VCD, DVD, mobile phones, MP3! LED lamps of high energy saving, long life, and the superiority of the environmental protection can be obtained generally recognized. LED high energy-saving: DC drive, ultra-low power consumption (0.03 ~~ 1W single tube) electro-optical power conversion close to 100%, the same lighting effects than traditional energy sources more than 80%. The long-life LED: LED light source is known as the longevity lights. Solid cold light source, epoxy encapsulated, light body and no loose parts, there is no filament light easy to burn, heat deposition, the light fades fast shortcomings, the service life of up to 50000-100000 hours, longer life than traditional light source 10 times. LED environmental protection: LED is a green light, better environmental benefits. No ultraviolet and infrared spectra, low in calories and no flicker, no radiation, and recyclable waste, no pollution, no mercury elements, cold light source, safe touch, typical of green lighting. Characteristics of the LED light source Lighting the LED light source VF voltages are very low, under normal circumstances, 2.75 ~ 3.8V, IF is generally 15 to 1,400 mA. Therefore, the output voltage of the LED driver IC VFxN or VFx1, IF maintain constant current 15 to 1,400 mA. LED lamps use LED light source has a small power (IF 15 ~ 20mA) and high power (IF> 200mA) two kinds. Of small power LED used for the production of LED fluorescent lamp, decorative lights, grid lamps. High power LED is used for home lighting, spotlights, underwater lights, wall lights, street lights, tunnel lights, automotive work lamps, etc.. Power LED light source is a low-voltage, high-current-driven devices, the luminous intensity by flow through the LED current is determined by the size. Excessive current can cause the LED light attenuation, the current is too small to affect the luminous intensity of the LED. LED driver provides constant current power supply, in order to ensure the safety of use of high-power LED, and at the same time to achieve the desired luminous intensity. In the field of LED lighting, to reflect the characteristics of energy efficiency and long life LED lights, the correct choice of LED driver IC is essential. No good driver IC match the advantages of LED lighting can not be reflected. LED lamps on the requirements of low-voltage driver chip 1. The driver chips nominal input voltage range should meet DC of 8 ~~ 40 V, to cover a wider application needs. Best pressure capability greater than 45V. When the input AC 12V or 24 V, a simple bridge rectifier output voltage with the grid voltage fluctuations, especially when the high voltage output DC voltage will be high. If the driver IC does not have a wide input voltage range, often in the grid voltage rises will be breakdown, thereby burn LED light source. 2 driver chips nominal output current requirements is greater than 1.2 ~ 1.5A. As lighting, LED light source, 1W power LED light source, the nominal operating current of 350mA 3W power LED light source, the nominal operating current of 700mA. Power the LED light source requires higher currents, so the driver IC of the LED lighting selected must have enough current output, also must make driver IC design products in the best working area of the full-load output of 70 to 90%. Full load output current driver IC poor heat dissipation in the narrow space of the lamps, easily lead to the lamps fatigue and early failure. Driver chip output current must remain constant, so that the LED can be steadily lit and not flashing. The same number of driver chips for use under the same conditions, the size of the output current to be as consistent as possible, discreteness is small, so that the high volume automated production line in order to ensure effective and orderly. Certain discrete driver chips for the output current, required in the factory or production line before the selection of sub-file, adjust the size of the the PCB board current setting resistor, so that the production of LED lamps constant current driver board similar LED The emission luminance of the light source of the same, in order to maintain the consistency of the final product. Driver chip package should be conducive to the rapid cooling of the tube core of the driver chip, such as the die bound directly on the copper, and has a pin that extends directly to the outside of the package, in order to be soldered directly on the copper foil of the PCB rapid thermal conductivity (Figure). Similar 4X4mm the chip by 300 ~ 1,000 mA current for a long period of time, is bound to produce the power consumption and heat, so the physical cooling structure of the chip itself is also very important. Drive chip anti-EMI, noise and high voltage capacity is also related to the entire LED lighting products success through the certification of CE, UL, and therefore should be used and the design of the driver chips advanced topology and high-pressure production process. Drive chip power consumption requires less than 0.5W, switching frequency requirements greater than 120Hz, in order to avoid frequency interference produce visible flicker. In short, LED green lighting prompted the driver chip to the development of innovative design. LED lighting can not be separated from the driver chip, and therefore need a multi-function LED light source driver IC. If the selection below 36V AC power LED lamps, can be considered a non-isolated power supply; the optional 220V and 100V AC power supply, isolated power supply should be considered. Direct use AC 100 ~ 220V driver IC for applications demanding requirements of the volume, technically there are higher demands, the greater the difficulty, the countries are working to develop. Mass market demand of LED lighting to all the chances of success of the integrated circuit design company again, if rapid transformation, as early as the product, you win a lot of opportunities.

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Professional Designer teach you how to use LED lights for commercial Lighting

Light, from a simple lighting tool into a space designed decorative tools have been in keeping up with the pace of human development. The pursuit of the people's quality of life that has never stopped, and the expectations and demands of their own living space is constantly improving. Then, in the modern shopping environment, the light in the end serves as which roles? From the ILED lighting a designer, said, ILED lighting has always been to focus on leading brands of LED according to optical, both at home and abroad have had many well-known cases, such as the Huizhou Daya Bay Hotel, Shanghai Old Temple Gold store lighting, and so on. Based on the experience of recent years in the ILED lighting LED lighting design and R & D work, his light LED according to quite understand, following the author to share with you the following: First, in light of the business according to the choice lamps, LED lamps have the incomparable advantage of traditional light sources. Commercial applications are often the first to consider the economic cost. Energy-saving LED lights, saving money; LED lights long life, saving manpower, material; LED lights environmentally friendly, win hearts and minds! Coupled with LED lights to promote the star, the application of LED will be the future trend, why not once and for all? LED unit price is higher than traditional lamps, it is difficult to enter the home lighting, commercial lighting, the ILED lighting, a senior engineering designer, LED light is the best choice. Secondly, in the modern commercial applications, light more than act as the role of simple lighting, modern lighting design also gives it a new function. First, abundant space level. The level of the space is a space, the distance and orientation, order, and there is a space of the articles in each other spatial relationship. LED lights lighting effects and color temperature, color can bring people of different visual effects. Second, the division of the region. Designers through different LED lighting line intensity irradiation direction and color to remind guests between the different space changes, so that the functionality of the space is more obvious. This will not only be able to form a local, small private environment, but also to maintain the space with each other, and enhance the integrity of the space. Third, the prominent items. LED lighting design accent lighting to more prominent items characteristics to form a space theme to reach commercial purposes cabinet lighting such as shopping malls, hotel food, lighting and so on. ILED LED lamps lighting design, are often thought to provide customers with the overall lighting solutions as a starting point to provide supporting services for the design concept, rich and enhance the company's product line. LED according to use up more often than not a single lighting applications, it needs to create an atmosphere suitable for different needs and visual effects by supporting the use of different lighting. Usually space to provide uniform brightness LED ceiling lamps, LED lamp, such as the main light source, LED spotlights, LED ambient light and other light sources to emphasize the focus on lighting or local lighting.co

[led-panel-light-blog]

How to match the LED lights for Hotel?

In recent years, LED lights have been the government's promotion of the star, LED lights also live up to expectations, and give full play to its advantages of energy-saving, environmental protection, long life, has won great recognition of the user, especially in the field of commercial space, making full use of LED lights become a trend. Modern lighting design has already exceeded illuminate dark nature, it has become the essential tool for modern building decoration. Hotel lighting, how should we layout LED lighting to create a warm, comfortable, cozy feeling of home? According to one from the leading brands of LED according to light LEDIA lighting designer the the ILED lighting lighting designers will normally Hotels function is divided into three main categories: Business, resort and villa-style hotel hotel atmosphere must be its function to match. The hotel lobby to the customer's first impression is often the most important, so it should pay special attention to the lighting design of the hotel lobby. Business hotel The type of hotel is usually in the economically developed areas, often held large-scale business activities, outstanding conference, Business functions. Need to create a lobby lighting design, style, atmosphere, yet friendly atmosphere. Recommended overall space using warm colors 3000K, an average intensity of 250-300lx, local raw point area the 500lx around. Resort hotel These hotels are usually built in the near tourist attractions, mainly friends and family together to play, the highlight of the holiday and leisure function. The overall atmosphere of the lobby is a quiet, warm, feel at home. Suggested the whole space with warm colors 2700K-3000K, an average intensity of about 150-200lx. LEDIA lighting designers also made special mention, if it is in a very elegant seaside resort, design can also try using a high color temperature, high illumination lighting to create a cool, refreshing atmosphere. Villa-style hotel These hotels are generally better living environment of the suburbs, the hotel function leisure, vacation, but mainly for the reception of high-level customer. Although occasional small-scale commercial activities, but mainly leisure, entertainment and family activities. Type of hotel to create an atmosphere focused lobby lighting design proposals overall space using warm colors 3000K, an average intensity of about 100-200lx 300lx local raw point area about. ILED lighting designer also introduced, the lobby is not only reflected the style and personality of the hotel, also reflecting the multi-functional needs, such as the foyer, help desk, rest waiting area special small corner. Lighting design should not be overlooked. The foyer color temperature is too low, the sense of space will seem very narrow, the color temperature is too high, they think intimacy is not enough, easy to make guests feel manic. Total service station both to use high illumination light source to facilitate the registration and settlement, but also with the door anteroom color temperature consistent, in order to strengthen the cordial atmosphere. So to summarize the above, we can lobby lighting is divided into three parts lighting area: door and anteroom area, service the total station areas and guest lounge area. From the general laws, door and anteroom part of the lighting is the general lighting of the lobby or global illumination, lighting is local service the total station lighting and guest lounge area lighting. Lighting should maintain the consistency of the color temperature, the three regions by luminance contrast, can form a rich taste, continuous and the ups and downs of the light and dark transition, to create a cordial atmosphere overall.