To provide a street luminaire having a simple structure capable of easily and quickly replacing a lamp placed in the inside.

A street luminaire has a light radiating window 2 closed in a front face of a reflector 4. The reflector 4 has an opening part 5 relating to a lamp holder 7 in an opposite side to a means 3 for receiving a strut of a housing 1. The housing 1 itself has an opening part 11 closed with a cover 72. The lamp holder 7 is supported by the cover 72, in this way, a lock of the cover 72 is unlocked, an assembly of the cover 72, lamp holder 7, lamp (b) and a plug 71 is drawn out simultaneously with disconnecting electric connection of the plug 71 and a receptacle 9, so that the lamp (b) of the lamp holder 7 can be replaced.