Traditional white LED light engine is directly coated with yellow phosphorus phosphors on a blue LED, white LED lit, the heat is difficult to distribute, yellow phosphorus phosphors in the long-term high temperature BBQ is easy to degeneration, resulting in significant use for a long time after color index variation. LED lamps, such as yellow phosphorus phosphor directly coated white LED light engine, but filter made of a yellow phosphorus, to maintain a certain distance with the blue LED in the fixture, the two superimposed using the same samples can be obtained white or warm white light of the LED lighting effects. The yellow phosphorus filter away from the LED heat, therefore, aging degeneration due to the LED light source of long-term high-temperature grill, CRI is essentially the same; yellow phosphorus filter with side adjustable, lighting, color, color temperature with the modulation of the needs of customers, which can meet the customized requirements and poor production alienation of the product.
The blue LED light engine architecture is an innovative concept, completely different from the aforementioned white LED light engine. Blue LED light engine will be the blue LED light source plate, the AC / DC constant current drive power board. The yellow phosphorus filter is integrated in one. Its structure principle shown in Figure 5, the mains via the AC / DC constant current drive power transform the output constant-current DC lit blue led high bay light source, blue, yellow phosphorus filter to the LED light the engine makes white or warm white.