Abstract: An LED assembly can effectively prevent static electricity from accumulation, comprises an LED module, a grounded support and two fasteners extending through the LED module into the support. The LED module comprises a printed circuit board having a metal substrate and two insulating layers formed on the substrate, and a plurality of LEDs mounted on the printed circuit board. Each fastener has a plurality of teeth extending downwardly through the insulating layer to abut against a top face of the substrate, to thereby electrically connect a top face of the insulating layer and the substrate.

Abstract: An LED lamp includes a base plate, a plurality of LED components fixed on the base plate in lines and a light-guiding module located over the LED components. The light-guiding module has a plurality of light-reflecting bars mounted above the LED components. Each of the light-guiding bars is in alignment with a line of the LED components and has a thickness gradually decreasing toward the line of the LED components.

Abstract: An LED lamp includes a first heat sink, a lamp base, a plurality of LED modules, an envelope and a second heat sink. The first heat sink includes a cylinder at a centre thereof and a plurality of fins surrounding the cylinder. The lamp base is secured to a bottom portion of the first heat sink. The LED modules are mounted on the fins of the first heat sink. Each of the LED modules includes a printed circuit board and a plurality of LEDs mounted on the printed circuit board. The envelope is mounted between the lamp base and the second heat sink and encloses the first heat sink and the LED modules therein. The second heat sink has a disc-like configuration, with a bottom connecting portion extending through the envelope to connect with a top portion of the first heat sink.