| 摘要 |
A downlight 2 comprising a casing, an LED light source 6 incorporating one or more LEDs mounted on a circuit board 8 incorporating an integrated circuit 80 including an LED driver, a lens 26, a lens holder 24 and a heat sink 10. The lens 26 incorporates one or more frustoconical sections about a light entering section, and these have a densely distributed network of convex facets for emission of multipoint lights. The heat sink may preferably have a plurality of fins to dissipate the heat away from the lighting unit. |
