PURPOSE: To turn on a fire extinguishing agent spraying switch for automatic spraying a fire extinguishing agent only with removing of a nozzle by installing a fire extinguishing agent storage container within the site of a service station, and mounting the fire extinguishing agent spraying switch which operates by removing the nozzle from a nozzle catch.

CONSTITUTION: A container destroying protruding rod 24a used in a container destroying solenoid 24 lowers, and its end pierces into a pressurizing agent container 23 where pressurizing agent is enclosed, so that a fire extinguishing agent storage container is filled with pressurizing agent in the pressurizing agent container 23. As a result, powder fire extinguishing agent 22 in the container 21 is pushed by pressurizing agent and is pressured into a blowout pipe 25 and is passed through piping 26, and flows into a spraying hose 17 for jetting from the nozzle 18 of its end. Then, by holding a lever 29, a valve opens and fire extinguishing agent 22 is jetted. Therefore, fire extinguishing agent 22 which blows out from the nozzle 18 is directed to a fire origin, and is jetted for fire extinguishing. After a hose storage door 16 is opened and the spraying hose 17 is drawn out, a wound and contracted loop part expands, so that fire extinguishing work can be performed even if the fire origin is somewhat apart from the service unit 6.