The subject innovation relates to relates to a fire extinguishing device of the sandwich panel, and more particularly, in case of fire the fire evolution in the sandwich a sandwich panel to be to ensure that the water is injected rapidly evolving the fire into the interior of the panel unit.
To this end, the subject innovation is a sandwich in case of fire the panels that sandwich panel by the water injected into the inside of the heat insulating material in the fire extinguishing apparatus of the sandwich panel to fight fire, wherein the heat insulating material to penetrate the outer steel plate, the upper side of the sandwich panel and the insertion hole water injection member formed with a predetermined depth therein, and the water injection member insertion groove is in case of fire that as the injection hole is opened, closed by the heat and the water injection member for injecting water into the insulation fixing insert, the water injection member between the groove and the water injection member flew the case of fire insulation rust not stick to the outer surface of the water injection member should, of course, to ensure an initial water spray space and having a space formed in a predetermined size, the outside of the sandwich panel has It is connected to the connection pipe to the water injection member as a medium for supplying water is connected to a water storage tank or water supply It is characterized in that the water feed pipe is installed.