To notify a driver during a travel about abnormality occurrence inside a tunnel to make the driver perform an emergency stop.
This emergency perception head 14 discharges water toward a lane inside the tunnel in an emergency perception pattern when emergency equipment inside the tunnel operates to notify the driver of a vehicle traveling inside the tunnel about the abnormality occurrence. The emergency perception head 14 includes: a head body 42 connected to a pipe supplied with pressurized fire-extinguishing water; a nozzle part 44 disposed ahead of the head body 42, and provided with a water discharge port 66 discharging the water in the emergency perception pattern; and an angle adjustment mechanism for adjusting a water discharge angle of the nozzle part 44, and fixing the nozzle part 44 in a state in which the nozzle part 44 is adjusted to an optional water discharge angle.
JP2004313753A | 2004-11-11 | |||
JP2002355324A | 2002-12-10 | |||
JP2008049342A | 2008-03-06 | |||
JPH0343358U | 1991-04-23 | |||
JP2009273689A | 2009-11-26 | |||
JPS59127672A | 1984-07-23 | |||
JPH0639151U | 1994-05-24 | |||
JP2004313490A | 2004-11-11 | |||
JP2009072303A | 2009-04-09 | |||
JP2002035147A | 2002-02-05 |
Next Patent: TUNNEL FIRE EXTINGUISHER APPARATUS AND FIRE EXTINGUISHER MANAGEMENT SYSTEM