Patent ID: 8284350

Claim:
A lighting system having light-emitting diodes as light sources mounted on a circuit board, wherein the light-emitting diodes include a first light-emitting diode, a second light-emitting diode and a third light-emitting diode, the first, second and third light-emitting diodes being different color light-emitting diodes, the light-emitting diodes are constituted of one single unit including one for each of the first, second and third light-emitting diodes, and the one single unit is repeatedly arranged as plural single units mounted side by side on the same circuit board, and each of the first, second and third light-emitting diodes of one single unit is individually connected electrically to the first, second and third light-emitting diodes of the same color of another single unit to emit a light, wherein a first wiring pattern enables connection of one of the first, second and third light-emitting diodes of the plural single units and has at least one portion formed linearly on the same circuit board along a mounting direction of the light-emitting diodes of the plural single units so as to extend only along a first side of the circuit board, and wherein a second wiring pattern enables connection of another of the first, second and third light-emitting diodes of the plural single units and has at least one portion formed linearly on the same circuit board along the mounting direction of the light-emitting diodes of the plural single units so as to extend only along a second side of the circuit board, the second side of the circuit board being opposite to the first side of the circuit board.