Fecha de publicación: 19/10/2007 Fuente: WIPO "royal booby" PURPOSE: A dyestuffs pack for a protection plate of an underground cable is provided to enable a worker to recognize a damage of the underground cables through an ejection of the dyestuffs pack when the protection plate of the underground cable is damaged. CONSTITUTION: A dyestuffs pack for a protection plate of an underground cable includes a dyestuffs pack(10), a protection plate of an underground cable(20) and a cover. The dyestuffs pack is filled with dyestuffs of fluorescent and luminous material of a liquid, an air or a powder shape, and is installed on the inside of the protection plate of the underground cable. The dyestuffs pack is installed on lattice space of the protection plate of the underground cable. The cover covers the protection plate of the underground cable. The material of the dyestuffs is composed of a plastic back or a thin metal which are split by an external impact. The dyestuffs are a sort of booby trap. When the dyestuffs are damaged, the fluorescent and luminous material are sprayed or ejected. ©KIPO 2008