LED light engine refers to the overall combination including LED package (component) or LED array (module), LED driver, and other brightness, thermal, mechanical and electrical components. The device is to be directly connected to the branch circuit through a conventional connector matching the LED luminaries, which are designed to use no standard lamp holders.
Is the whole LED lamp can also be called light engine? Just as the whole car can not be called the engine, the engine is the powertrain of the car, but not equal to the car, but also add the shell talent into the car. The reason for the need for products like light engines is that all lamps have various appearances. Some can even be called works of art.
The incandescent light bulb, for example, requires only the simplest form of light bulb, at most, plus a candle lamp or a tiny Christmas light. But it comes in all shapes and forms. Especially the crystal lamp is a variety of arts and crafts, pole beautiful. But the LED must also add a constant current drive source with messy poles, which is equivalent to an incandescent lamp (connected to 220V can light up). If the LED is made into a light engine, it can also be connected to 220V like an incandescent lamp (of course, it needs to have a matching radiator). This on the one hand helps to standardize, on the other hand can also greatly facilitate the shell (and radiator) scheme to develop their capabilities.
