Patent ID: 9635722
Date: 2017-04-25
CPC Classifications: F21S,F21V,F21Y,H05B

Claim:
1. A string light, comprising: a first copper wire, a second copper wire, and a third copper wire; and a plurality of lighting units, each comprising a first surface-mount-device (SMD) light emitting diode (LED) and a second SMD LED; wherein the first and second copper wires are connected to a positive terminal and a negative terminal of a power source, respectively; the first SMD LED of each lighting unit has an anode connected to the first copper wire; the second SMD LED of each lighting unit has a cathode connected to the second copper wire; cathodes of the first SMD LEDs are connected to the third copper wire, and anodes of the second SMD LEDs are connected to the third copper wire.