What is the structure of LED bulb?

               LED lamp market is the largest civilian market, and the public to use the most is spherical bulb, the LED bulb is a new alternative to traditional incandescent bulbs green light. LED bulb is that people have become accustomed to the appearance of a light bulb shape - spherical, internal light source is an LED lamp beads. The working principle of LED is different from other lighting equipment, so its structure is different from the other lighting equipment.
              The structure of LED bulb lamp mainly has the following several part:
(1) Shade: There are two types of PC and glass, the emphasis is on transparency, because the PC cover with glass transmittance is almost no difference, so consider the production and convenient transportation issues, most manufacturers are is the choice of unbreakable PC cover. Also with respect to the glass, the advantages of PC hood lies consistency, less defective products, high production efficiency, and is spiral or buckle design, product assembly molding is relatively fast.
(2) the heat sink: a car aluminum, cast aluminum, ceramics, thermal plastic and fins, the main consideration is the thermal conductivity.
(3) Base: Base as an international standard, there are: E27, E14, B22, and other specifications, the main material for flame-retardant plastic and iron holster, and some special requirements will use copper lamp.
(4) board: the mainstream market, there are two, one is a glass plate, the other is aluminum plate, and its role is to connect the line and thermal conductivity, heat a large general lighting will be using aluminum plates, considered more also the thermal conductivity.
(5) Power Driver: Its main role is to convert AC power to DC power lamp beads available for use, from a performance perspective, the main consideration is driven by constant current performance, the industry is currently mainly used RC Buck, non-isolated drivers and other drivers and isolated power driver. RC Buck is a low-priced products tend to power, this power supply is a low power factor, shorter product life, but wins in the low price, so popular esteem low-priced products. Non-isolated driver is the most used by the driver, it is the highest price, the performance is very good, the price is about two to three times more expensive than the RC Buck, cheaper than driving at least five times more isolated. The isolated power is the most expensive, but relatively speaking, his security is the best, constant performance is also very good, mostly for export or domestic use of high-quality projects alone.
(6) LED: LED bulb lighting the core components ------ light.
              One of the highest costs of LED bulb can be said drive power, do not have this drive, lamp beads is not lit. And if the quality of an LED bulb, the most important is the radiator, and the drive power and the light beads.
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The above article from Sourcechip official website (http://www.sc-ledlights.com/)
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