Light-emitting diode (LED) energy-saving street lamp capable of adjusting size of light source

The utility model relates to the technical field of light-emitting diode (LED) street lamps, and discloses an LED energy-saving street lamp capable of adjusting the size of a light source, which comprises a lamp post, a lamp shade and a bottom plate, the lamp shade is fixed above the lamp post, the LED energy-saving street lamp further comprises a mounting seat fixed at the top of the bottom plate, a rotating shaft is mounted at the top of the mounting seat, and the bottom end of the lamp post is fixedly connected with the rotating shaft; the LED street lamp is convenient to overhaul, has a folding function and is kept in an upright state in the daily use process, when a worker needs to overhaul a street lamp system, the height of the street lamp can be reduced in a folding mode, the worker does not need to climb the street lamp, the safety during overhaul is effectively improved, and the LED street lamp is convenient to use. The LED street lamp has the advantages that the maintenance efficiency is improved,