Safety plug for a firework and firework comprising such a safety plug

摘要

The invention concerns a firework (100), comprising a wrapping (130), an internal active substance (110) as well as a safety plug (120, 120', 120") that closes an aperture of said wrapping and to which a triggering matchcord (104) is connected, characterised in that said safety plug comprises a delay fuse and further comprises:- a closing surface of said aperture of the firework (100);- a through-hole (125), suitable to let the triggering matchcord (140) pass through;the delay fuse (125) being constituted by the chamber of said through-hole, wherein the triggering matchcord (140) is fixable by means of suitable fixing and sealing means.;The invention further concerns a safety plug with mechanical delay fuse to be used in such a firework.