To provide a long lighting fixture in desired length which can be easily formed by simplifying stock management and can improve efficiency by suppressing excess heat generation, and which can be composed by only connecting basic blocks in parallel, each block comprising a designed number of light-emitting diodes.

A basic block 10 is composed of plural pieces of light-emitting diodes D1 to D6 which are connected in series. The light-emitting diodes D1 to D6 of the basic block 10 are juxtaposed at a designated pitch in the longer direction on a long printed circuit board 11. The dimension in the longer direction of one divided piece of a long lighting fixture which is divided into plural pieces in the longer direction and the dimension in the longer direction of the basic block 10 to be measured when it is mounted on the printed circuit board 11 are made substantially equal. In this way, a long lighting fixture is composed by using a plurality of the basic block 10.