Lamp employing semiconductor light-emitting element

A lamp, comprising:

• a wiring substrate;
• a bus electrode formed on the wiring substrate along one direction;
• a plurality of electrode lines each formed on the wiring substrate, extending from the bus electrode, and having one end;
• a plurality of semiconductor light-emitting devices disposed to be parallel to one another along a direction in which at least two electrode lines of the plurality of electrode lines are spaced apart from each other by a predetermined distance;
• a plurality of transparent electrodes electrically connecting each of the plurality of electrode lines and one of the plurality of semiconductor light-emitting devices, respectively;
• a current injection part formed along the one direction to be disposed parallel to the bus electrode;
• and
• a plurality of connection electrodes disposed between the bus electrode and the current injection part to be spaced apart along the one direction and electrically connecting the bus electrode and the current injection part,
• wherein the plurality of connection electrodes have different resistance values.