Analysis of LED lamp status

Introduction: after years of development, LED lamp has been widely applied in the field of engineering, decoration, basically replaced the traditional lamp. In LED commercial lighting field, lamp can be said to be the highest penetration category, because its technical content is not high, basically can produce a screwdriver factory. No barriers to entry, who can produce, like a swarm of bees, resulting in uneven quality, the price from a few dollars to tens of dollars, so the current market is still relatively confused LED downlight. At the same time, the current price is very transparent from downlight, chip, packaging and other accessories to the housing cost dealers are basically understand crystal clear, but due to low barriers to entry, many producers, intense competition, so the profit of LED downlight compared to other commercial lighting products is much lower.

Downlight is generally used in shopping malls, offices, factories, hospitals and other indoor lighting, the installation is simple and convenient for people to love. LED downlight downlight all inherited the traditional advantages, less heat, energy saving and long service life, small maintenance costs. The early LED lamp LED lamp due to expensive, the overall cost is very high is not acceptable to the customers. With the decrease of LED lamp chip prices and cooling technology improved, laid a solid foundation for the LED lamp into the commercial field.

The LED lamp LED lamp, lamp shell, and power supply. The lamp downlight, should adopt high-power lamp as single 1W lamp, should not be used in small power such as 50505630 beads, the reason is that LED small power lamp brightness is bright enough but the light intensity is not enough, and the vertical distance is generally LED lamp irradiation of 4-5 meters, due to the small power light intensity enough ground light intensity is not enough, and high-power lamp especially integrated light source light intensity became the first LED lamp manufacturers. Is widely used as a single 1W high-power lamp lamp, lamp made of 1W, 3W, 5W, 7W, 9W, the largest can generally be made of 25W, if the use of high-power integrated scheme can also make more power.

Determine the life of downlight mainly has three parts: LED lamp, LED heat "shell design, LED power supply. LED lamp manufacturers mainly determines the life of LED downlight. General quality LED lamp manufacturers, will use foreign CREELED chip, at least one of the high stable product market recognized. This makes the light natural high brightness, long life, but the price is not cheap, the use of the life of the chip manufacturers in Taiwan is also long, but the price is relatively low, the basic can be accepted by Chinese customers in the end market. The local market China chip life is short and the light is large, but the lowest price has become a large number of small manufacturers preferred price. By adopting the LED lamp, LED chip is what kind of, but also directly determines the location and the LED lamp manufacturers industry has the social responsibility.

LED power is LED downlight LED downlight effect on the heart, life greatly. In general, LED downlight is 110/220V power supply, 220V power supply is Chinese local market. Due to the development of LED lamps in a relatively short time, the country has not the power supply standard, so the market LED power ring like hemitropous, uneven, a large number of low PF value, simply can not be flooded the market through the EMC power supply. The power of the electrolytic capacitor life also directly determines the life of the power supply, due to the sensitive to the price, to find ways to reduce the cost of the power supply, the LED power conversion power is low, the service life is not long for LED lamp by "longevity lamp" to "short-lived lights".

Effect of thermal design of LED downlight on its life is also important. LED by heat conduction to the internal PCB lamp start and then exported to the housing, then housing by convection or conduction to the air. PCB heat to be fast enough, thermal performance of thermal grease to be good enough, the radiating area housing should be large enough and reasonable design of several factors determine the LED lamp is in normal work of PN junction temperature not higher than 65 degrees, to ensure that the LED chip is in normal working temperature not because the temperature is too high too fast to produce light.

LED radiator can solve the radiator well cannot be issues related to heat lamp, internal PCB lead, and the national patent applications; the use of high-quality 6063 aluminum refining, formed by heat conduction in one effect, high thermal conductivity and heat dissipation; the top of the radiator design a plurality of heat dissipation holes, and the heat dissipation the periphery of the heat sink is conducted, to realize air convection. Like a number of chimneys, the heat of the LED to the top, while the heat sink to achieve heat dissipation, so as to achieve efficient cooling.