The invention discloses a novel LED lamp device. The device comprises a base body, a cavity is formed in the middle inside the base body, winding grooves are corresponding formed in the left side and the right side of the cavity, mounting grooves are formed in the positions, in the outer wall of the base body, of the front sides of the winding grooves, a sliding connection groove which stretches front and back is formed in the inner bottom wall of the cavity, a screw rod which stretches front and back is formed in the sliding connection groove, the rear side end of the screw rod is connected with a first electric rotation machine, a sliding connection block which extends upwards and penetrates into the cavity is arranged in the sliding connection groove, the left front side and the rear right side of the sliding connection block are provided with assembling blocks, force transmission cavities are formed between the assembling blocks and the sliding connection block, a second electric rotation machine is arranged in the middle of the sliding connection block, through grooves are formed in the front side and the rear side of the second electric rotation machine, and the outer side ends of the through grooves in the front side and the rear side are communicated with force transmission cavities in the sliding connection block in the front side and the rear side. The device is simple in structure and easy to operate, different-distance construction lighting needs can be achieved, automatic winding work can be finished, a power line can be prevented from being damaged, electric shock accidents are avoided, and construction efficiency and safety are improved.