US Patent 7837353 LED assembly preventing electrostatic accumulation thereon

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.