Arcing horn device

An arcing horn system comprising a ground side arcing horn (11) and a electric line side arcing horn (12) to be attached to the opposite sides of an insulator set (1) as being opposed with each other;

• wherein insulative members (13) and (14) are provided at respective front end sides of said ground side arcing horn (11) and said electric line side arcing horn (12), respectively and air vents (21a) are formed on these insulative members (13) and (14) as communicating from the front ends of said arcing horns (11) and (12) to the front end surfaces of said insulative members (13) and (14);
• and
• the arc jet is blown off from respective air vents (21a) when the arc is generated between the front ends of both arcing horns (11) and (12) upon the thunder stroke.

An arcing horn system, in which an insulative member (14) for surrounding a front end side of an arcing horn (12) and an air vent (21a) communicating from a front end portion of said arcing horn (12) to a front end surface of said insulative member (14) is formed on said insulative member (14);

• wherein a cap (30) for covering the front end side of said insulative member (14) is disposed so as to prevent the intrusion of the rain water into said air vent (21a);
• and
• said cap (30) is provided with opening means for allowing the blowoff of the arc jet through a wall portion (32) on this wall portion (32) that crisscrosses a blowoff path of the arc jet to be blown off from said air vent (21a) to the front end side upon the flashover by the thunder stroke.