The present invention, The receiving space 11 is formed inside, and the complete iron 10 installed in Jeonju (EP) and: The insulator 20 installed on the complete iron 10 and having the overhead power distribution line AL installed thereon: An insertion part 41 positioned above the armature 10 and detachably inserted into the upper end of the electric pole EP； An insulating film receiving mechanism 40 made of an insulating material having first and second insulating film receiving parts 42 and 42 'provided on both sides of the insertion part 41: A support 31 installed above the insulating film receiving mechanism 40； A rotating ring 32 rotatably installed on the support 31 and； Bird repelling mechanism (30) with a plurality of reflective rods (33) installed on the rotating ring (32): A fire detection sensor 90 installed under the insulating film receiving mechanism 40 and: When installed on the lower side of the insulating film receiving mechanism 40 and receiving a fire detection signal from the fire detection sensor 90, the transmitter 100 wirelessly transmits a warning signal: First and second insulating films 51 and 51 ′, which are exposed to the outside by passing through the first and second insulating film receiving parts 42 and 42 ′, respectively； First and second hooks 52 and 52 'provided on one side of the first and second insulating films 51 and 51' and positioned outside the first and second insulating film receiving parts 42 and 42 ', respectively； When the pulling force is released from the pulled first and second insulating films 51 and 51 ', the first and second winding bobbins 53a and 53a' are wound or unwound respectively on the first and second insulating films 51 and 51 ', respectively. The first and second winding bobbins 53a and 53a 'are returned to their original positions, respectively, and the first and second bobbin mechanisms 53 and 53' respectively provided in the first and second insulating film accommodating portions 42 and 42 'are provi
