JP2024075454A - Fire hydrant device - Google Patents

Abstract

To provide a fire hydrant device allowing a user to simply and easily perform restoration work of rewinding a fire hose by preventing the fire hose internally wound in a vertical direction from easily collapsing when the fire hose is pulled out.SOLUTION: A fire hydrant device 10 is installed close to or in contact with a tunnel wall surface at a prescribed height above a road surface of a watchman passage 34 provided along the tunnel wall surface. The fire hydrant device 10 is so configured that a hose storage part 42 storing a fire hose 54 is disposed on a lower side inside a housing, and a valve storage part 44 storing prescribed valves including a fire hydrant valve 62 for a pipe for connecting the fire hose 54 is disposed on the upper side inside the housing. A vertical width of the hose storage part 42 is set to a prescribed vertical width, for example 700 mm, within a range of a legally stipulated upper-limit vertical width of 700 mm or less, which is the appropriate operating range from a standing surface of a road user, and a lower limit vertical width of 500 mm or more based on a minimum bending diameter that the fire hose 54 can bend without breaking.SELECTED DRAWING: Figure 6

Description

The present invention relates to a fire hydrant device that is installed exposed in a guard passageway that runs along the wall of a tunnel.

Conventionally, fire hydrant devices are installed as emergency tunnel equipment in tunnels such as expressways and motorways. For example, a fire hydrant device stores a fire hose with a water discharge nozzle at the end and valves including a fire hydrant valve in a fire hydrant storage section inside a housing equipped with a forward-tilting fire hydrant door (forward-tilting door), and two fire extinguishers are stored in a fire extinguisher storage section inside a housing equipped with a fire extinguisher door. Furthermore, fire hydrant devices are generally installed by embedding boxes into the tunnel wall where the guard passage is provided, for example at intervals of 50 meters along the length of the tunnel (Patent Document 1).

However, in tunnels constructed using methods such as the shield tunneling method, the structure of the tunnel frame makes it difficult to cut a box out of the tunnel wall and embed and install a fire hydrant device, due to the cost and labor involved, so it is necessary to install the fire hydrant device in an exposed state in the guard passage.

For this reason, a wall-mounted structure has been proposed in which a stand is installed on the tunnel wall and the fire hydrant is attached and fixed to the stand, as a structure for installing the fire hydrant in an exposed state in the guard passage without removing the box from the tunnel wall. The stand for this wall-mounted structure is composed of a main support part that is fixed to the wall and a position-maintaining member that maintains the position of the fire hydrant (Patent Document 2).

However, installing a fire hydrant device using a wall-mounted structure has issues, such as the time and labor required to attach the device to the tunnel wall. Therefore, it is being considered to adopt a so-called stationary structure, in which a stand is placed on the road surface of the guard passage, which is easier to install, and the fire hydrant device is attached and fixed to the stand.

Also, a fire hydrant device has been proposed that is embedded in the guard passage so that it can be operated from both the road and the guard passage without obstructing the guard passage (Patent Document 3).
In the conventional fire hydrant devices shown in Patent Documents 1 and 2, the fire hydrant storage section of the housing is divided into left and right halves to form a hose storage section and a valve storage section, and a fire hose using a shape-retaining hose is stored inwardly wound vertically in the hose storage section. In addition, the conventional fire hydrant device shown in Patent Document 3 stores a shape-retaining hose inwardly wound horizontally in the hose storage section.

JP 2009-279294 A JP 2019-000196 A JP 2018-027150 A

However, in conventional fire hydrant devices in which the fire hose is wound inward vertically in the hose storage section, the height inside the housing is a vertically long storage area that is the vertical width of the storage area in which the fire hose is wound inward. When a road user uses the fire hydrant device to pull out the fire hose to put out a fire, the inwardly wound fire hose is pulled out from the inside, and the upper support of the overlapping inwardly wound fire hose weakens, which can cause the fire hose to collapse, and it can be difficult to pull out the fire hose from the hose storage section smoothly.

In addition, when the use of the fire hydrant device is finished, recovery workers drain the water from the fire hose and then perform recovery work by rolling the fire hose inward and returning it to the hose storage section. However, because the hose storage section is a vertically long storage area, when rolling the fire hose inward and returning it to the upper part of the storage area, it is necessary to support the fire hose from below with your hands so that it does not fall, and because this work is done in a narrow area inside the housing, there is a problem that the recovery work of rolling the fire hose back is time-consuming and laborious.

Furthermore, conventional fire hydrant devices that are installed flush in guard passages can provide a hose storage section within the guard passage that is large enough to allow the fire hose to be wound inward horizontally, and because the hose is wound inward horizontally, it will not collapse even when pulled out. However, fire hydrant devices that are installed exposed above the guard passage need to be thin so as not to obstruct passage through the guard passage, and it is difficult to provide the space within the housing for the hose storage section required to wind the fire hose inward horizontally.

The present invention aims to provide a fire hydrant device that is unlikely to collapse when a fire hose that is wound inward vertically is pulled out, and that allows the recovery work of rewinding the fire hose to be performed simply and easily.

(Fire hydrant device of the first invention)
The present invention relates to a fire hydrant device that is installed at a predetermined height above the road surface of a guard passage provided along the wall surface of a tunnel having a road, in close proximity to or in contact with the tunnel wall surface,
A hose storage section containing a fire hose is located at the bottom inside the housing,
A valve storage section in which predetermined valves including a fire hydrant valve are provided on a pipe to which a fire hose is connected is disposed on the upper inside side of the housing.

(Fire hydrant device of the second invention)
The present invention relates to a fire hydrant device that is installed at a predetermined height above the road surface of a guard passage provided along the wall surface of a tunnel having a road, in close proximity to or in contact with the tunnel wall surface,
A hose storage section in which a fire hose is stored is disposed on the upper inside of the housing,
A valve storage section in which predetermined valves including a fire hydrant valve are provided on a pipe to which a fire hose is connected is disposed at the lower inside of the housing.

(Vertical width (height) of hose storage section)
For the first and second inventions, the vertical width of the hose storage section is a predetermined vertical width that is less than a first vertical width, which is the appropriate operating range from the standing surface of a road user as specified by law (Ministry of Home Affairs Ordinance), and is greater than or equal to a second vertical width based on the minimum bending diameter at which the fire hose can be bent without breaking.

(First vertical width (maximum height) of hose storage section)
For the first and second inventions, the appropriate operating range is from 800 mm to 1500 mm above the road surface of the guard passage where road users stand, and the first vertical width (maximum vertical width) of the hose storage area is 700 mm.

(Second vertical width (minimum height) of hose storage section)
Regarding the first and second inventions, when the minimum bending diameter at which the fire hose can be bent without breaking is, for example, 340 mm, the outer diameter of the hose is 40 mm, and the hose is wound internally twice, the second vertical width (minimum vertical width) of the hose storage area is 500 mm.

(Box-shaped area of hose storage section and hose wrapping inside)
In the first and second aspects of the present invention, the hose storage section is
The lower interior of the housing is partitioned into a box-shaped area that is open to the front,
A grid using a cylindrical or columnar frame member is disposed at the front opening of the box-shaped region;
A fire hose is stored in the box-shaped area, wound inwardly and lengthwise.

(Hose outlet)
In the first and second aspects of the invention, the hose storage section has a hose outlet that is partitioned into a rectangle by a cylindrical or columnar frame member formed at the front opening of the box-shaped region.

(Nozzle holding part)
In the first and second aspects of the present invention, the hose storage section is provided with a nozzle holding section located near the outside of the hose outlet for detachably holding a water-discharge nozzle connected to the end of the fire hose pulled out from the hose outlet.

(Fire hydrant valve opening/closing operation section)
Regarding the first and second inventions, the hose storage section is provided with a fire hydrant valve opening/closing operation section at a predetermined position on the front side of the box-shaped area, which remotely opens and closes a fire hydrant valve provided on a piping that supplies fire water to the fire hose.

(Fire hydrant door)
Regarding the first invention, the housing is equipped with a fire hydrant door at the door opening on the front of the hose storage section, which rotates vertically (downward) around the axis at its lower end to an open position where the door surface is perpendicular to the road surface of the monitor passage.

(Maintenance door)
Regarding the first invention, the housing is provided with a maintenance door at the door opening on the front side of the valve storage section, which rotates vertically (upward) around the upper end side as an axis to open the door relative to the road surface of the monitor passageway.

(Relationship between cabinet installation height and appropriate operating range)
In the first and second aspects of the present invention, the housing is installed at a predetermined height above the road surface of the monitor passage so that all or part of the hose storage section is within the appropriate operating range.

(Operation target and appropriate protection range)
In the first and second aspects of the present invention, a predetermined operation target is housed or installed inside the housing,
The predetermined operation target is positioned so as to be within the appropriate operation range.

(Specific examples of operation targets)
For the first and second inventions, the specified operation objects include the opening and closing handle of a fire hydrant door, a water discharge nozzle connected to a fire hose, an opening and closing operation part of a fire hydrant valve, a water supply hydrant to which a fire brigade hose is connected from outside, and a fire pump start button.

(Fire extinguishers and other enclosures housing electrical equipment)
In the first and second aspects of the present invention, a housing is provided on one side in the horizontal direction thereof with another housing in which a fire extinguisher is housed and in which predetermined electrical equipment is arranged,
The other housings are positioned at a height such that the fire extinguisher door opening and closing handle, the fire extinguisher operating part, and the electrical equipment operating part are within the appropriate operating range.

(Fire hydrant door and maintenance door layout 1)
Regarding the second invention,
The housing is
a fire hydrant door that is disposed at a front door opening facing a part of the hose storage section and the valve storage section, and that rotates about its lower end side in a direction perpendicular to the road surface of the guard passage to an open position where the door surface is perpendicular to the road surface of the guard passage;
an upper door that is disposed at a front door opening facing the upper side of the hose storage section and that rotates about its upper end side in a direction perpendicular to the road surface of the guard passage to open;
Equipped with.

(Fire hydrant door and maintenance door arrangement 2)
Regarding the second invention,
The housing is
a fire hydrant door that is disposed at a front door opening facing the hose storage section and rotates about its lower end side in a direction perpendicular to the road surface of the monitor's passage to an open position where the door surface is perpendicular to the road surface of the monitor's passage;
a maintenance door that is disposed at a front door opening opposite the valve storage section and rotates about its lower end side in a direction perpendicular to the surface of the guard passage to an open position where the door surface is perpendicular to the surface of the guard passage;
Equipped with.

(Hose outlet positioned lower)
Regarding the second invention,
A hose guide is provided in front of the valve storage section located at the bottom inside the housing,
The hose guide is formed with a hose outlet for pulling out the fire hose stored in a hose storage section arranged on the upper inside side of the housing to the outside.

(Effects of the fire hydrant device according to the first invention)
The first invention is a fire hydrant device installed in close proximity to or in contact with the tunnel wall at a predetermined height above the road surface of a guard passage provided along the wall of a tunnel having a road, in which a hose storage section storing a fire hose is arranged on the inside lower side of the housing, and a valve storage section in which predetermined valves including a fire hydrant valve are provided in a pipe to which the fire hose is connected is arranged on the inside upper side of the housing. Since the hose storage section is arranged on the inside lower side of the housing, the vertical width is narrower and the horizontal width is wider than that of a conventional hose storage section, and even if a road user uses the fire hydrant device to pull out the fire hose to put out a fire, the vertical width of the fire hose that is wound inward is narrow, so that it is possible to reliably prevent the inwardly wound fire hose from collapsing during the pulling out of the fire hose, which would hinder the work of pulling out the fire hose.

In addition, when recovery workers need to rewind the fire hose after using the fire hydrant device, the hose storage section is located on the inside lower part of the housing and is narrow vertically and wide horizontally, making it easy to perform the recovery work of rewinding the fire hose inward and rewinding it back into the hose storage section.

In addition, because the valve storage section is located in an area excluding the hose storage section located on the lower side of the housing, it is possible to ensure sufficient space within the housing above the hose storage section to store the valve storage section.

(Effects of the fire hydrant device according to the second invention)
The second invention is a fire hydrant device installed at a predetermined height above the road surface of a guard passageway that is provided along the wall of a tunnel having a road, in close proximity to or in contact with the tunnel wall, in which a hose storage section that stores a fire hose is located on the upper inside of the housing, and a valve storage section in which predetermined valves including a fire hydrant valve are provided on piping to which the fire hose is connected is located on the lower inside of the housing, thereby obtaining the same effects as the fire hydrant device according to the first invention described above.

Another effect unique to the fire hydrant device according to the second invention is that, because the valve storage section is located on the lower interior side of the housing, when the vertical width of the hose storage section located on the upper interior side of the housing is adjusted to correspond to the legally stipulated proper operating range from the standing height of road users, the valve storage section is located below the proper operating range, making it possible to lower the height at which the fire hydrant device is located above the road surface of the guard passage.

(Effect of the vertical width (height) of the hose storage section)
In addition, with regard to the first and second inventions, the vertical width of the hose storage section is a predetermined vertical width that is less than the first vertical width which is the legally prescribed proper operating range from the standing surface of a road user, and is greater than or equal to the second vertical width which is based on the minimum bending diameter at which the fire hose can be bent without breaking. Therefore, since the installation height from the road surface of the monitor's passage at the bottom of the housing which forms the bottom of the hose storage section is the lower limit height of the proper operating range, the entire hose storage section falls within the proper operating range, and it is neither too high nor too low, enabling road users to properly operate the fire hose in a natural posture.

(Effect of the first vertical width (maximum height) of the hose storage section)
In addition, with regard to the first and second inventions, the appropriate operating range is between 800 mm and 1500 mm above the road surface of the monitor walkway where road users stand, and since the first vertical width of the hose storage area is 700 mm, the vertical width of the hose storage section is kept to a maximum of 700 mm, which is sufficiently narrower than the conventional vertical width of around 1000 mm, and the hose storage section can be positioned at a low position inside the lower part of the housing.

(Effect of the second vertical width (minimum height) of the hose storage section)
In addition, with regard to the first and second inventions, if the minimum bending diameter at which the fire hose can be bent without breaking is, for example, 340 mm, the outer diameter of the hose is 40 mm, and the hose is wound inward twice, the second vertical width of the hose storage area is 500 mm, so that the vertical width of the hose storage section is ensured to be at least 500 mm, and the fire hose can be stored in an inwardly wound state in the hose storage section without bending (kinking).

(Effect of the box-shaped area of the hose storage section and the inward wrapping of the hose)
In addition, with regard to the first and second inventions, the hose storage section is formed as a box-shaped area with the lower interior side of the housing opening to the front, a lattice using a cylindrical or columnar frame member is arranged at the opening of the box-shaped area, and the fire hose is stored in the box-shaped area by being wound inward vertically. Therefore, by forming the hose storage section as a box-shaped area on the lower interior side of the housing, the fire hose can be stored without being affected by other fire hydrant equipment, and by arranging a lattice using a cylindrical or columnar frame member at the front opening of the box-shaped area, the stored fire hose is supported in a state where it can be seen from the outside, and further, by storing the fire hose by being wound inward vertically, it becomes possible for road users to smoothly pull out the fire hose when using the fire hydrant device with light force.

(Effect of hose outlet)
In addition, with regard to the first and second inventions, the hose storage section has a hose outlet partitioned into a rectangle by a cylindrical or columnar frame member formed at the front opening of the box-shaped area, so that road users can smoothly pull out the fire hose stored inwardly at the bottom inside the housing, without disturbing it, toward the fire source, which is in front of or to the side of the fire hydrant device.

(Effect of nozzle holder)
In the first and second inventions, the hose storage section is provided with a nozzle holder near the outside of the hose outlet that detachably holds the water nozzle connected to the tip of the fire hose pulled out from the hose outlet, so that when a road user opens the fire hydrant door, the water nozzle is held in an easily visible position on the front side of the hose storage section located on the inside lower side of the housing, making it possible to take out the water nozzle and pull out the fire hose without hesitation. Also, by forming the hose outlet at a low position on the front side of the housing, the fire hose is pulled out to a position close to the road surface of the guard passage, making it possible to reduce the hose's wild movement (the hose's swinging around movement) that accompanies the pulling out of the hose.

(Effects of the fire hydrant valve opening/closing operation unit)
In addition, with regard to the first and second inventions, the hose storage section is provided with a fire hydrant valve opening/closing operation section at a predetermined position on the front side of the box-shaped area, which remotely opens and closes the fire hydrant valve provided on the piping that supplies fire water to the fire hose. Therefore, when a road user opens the fire hydrant door, the fire hydrant valve opening/closing operation section, for example, the fire hydrant valve opening/closing lever, is located in an easily visible position on the front side of the hose storage section located on the inside lower side of the housing, and when removing the water discharge nozzle and pulling out the fire hose, the user can easily open the fire hydrant valve opening/closing lever and pull out the fire hose while spraying water from the water discharge nozzle.

(Effect of fire hydrant doors)
In addition, with regard to the first invention, the housing is equipped with a fire hydrant door at the door opening on the front of the hose storage section, which rotates vertically (downward) around the lower end side as an axis to open to an open position where the door surface is perpendicular to the road surface of the monitor's passage.Therefore, the open fire hydrant door can enlarge the door opening without obstructing passage through the monitor's passage, making it easier for road users to handle the fire hydrant device, such as by pulling out the fire hose, removing the water discharge nozzle connected to the fire hose, and operating the opening and closing operating part that opens and closes the fire hydrant valve.

(Maintenance door effect)
In addition, with regard to the first invention, the housing is provided with a maintenance door at the door opening on the front of the valve storage section that rotates vertically (upward) around the upper end side as an axis to open the door relative to the road surface of the monitor's passage, so that inspection and repair of fire hydrant valves, etc. provided in the valve storage section located above the hose storage section can be properly and easily performed by the manager by opening the maintenance door.

(Effect of the relationship between the cabinet installation height and the appropriate operating range)
In addition, with regard to the first and second inventions, the housing is installed at a predetermined height above the road surface of the monitor's passage so that all or part of the hose storage section is within the proper operating range, so that when a road user stands on the road surface of the monitor's passage to use the fire hydrant device, they can pull out the fire hose, and when a recovery worker rewinds the fire hose after use, they can operate it appropriately in a natural posture without being too high or too low.

(Effect of operation target and appropriate protection range)
In addition, with regard to the first and second inventions, the housing stores or has installed therein specified operation objects, and the specified operation objects include the opening and closing handle of the fire hydrant door, the water discharge nozzle connected to a fire hose, the opening and closing operation part of the fire hydrant valve, the water supply hydrant to which the fire brigade's hose is connected from the outside, and the fire pump start button, and these operation objects are arranged so as to be within the appropriate operation range, so that a road user standing on the road surface of the monitor's passage can properly operate the opening and closing handle of the fire hydrant door, the water discharge nozzle, and the fire hydrant valve opening and closing operation part in a natural posture, without being too high or too low, and even fire brigade personnel can properly connect and open the hose to the water supply hydrant, and operate the fire pump start button.

(Effect of fire hydrant door and maintenance door arrangement 1)
Regarding the second invention, the housing is provided with a fire hydrant door, which is arranged at the front door opening facing the hose storage section and a part of the valve storage section, and rotates around the lower end side in a direction perpendicular to the road surface of the guard passage to open to an open position where the door surface is in a position perpendicular to the road surface of the guard passage, and an upper door, which is arranged at the front door opening facing the upper side of the hose storage section and rotates around the upper end side in a direction perpendicular to the road surface of the guard passage to open, so that the door opening of the fire hydrant door can be made large, and it becomes easy for road users to handle the fire hydrant device, such as pulling out the fire hose, taking out the water discharge nozzle connected to the fire hose, and operating the opening and closing operation part for opening and closing the fire hydrant valve, and it is also easy for the manager to inspect and repair the fire hydrant valve provided in the valve storage section located below the hose storage section. In addition, when the fire hydrant device is used and the drained fire hose is to be rewound into the hose storage section, the upper door can be opened to perform the hose rewinding work appropriately and easily.

(Effect of fire hydrant door and maintenance door arrangement 2)
Regarding the second invention, the housing is equipped with a fire hydrant door that is placed at the door opening on the front side opposite the hose storage section and rotates around its lower end side as an axis perpendicular to the road surface of the monitor passage to open to an open position where the door surface is perpendicular to the road surface of the monitor passage, and a maintenance door that is placed at the door opening on the front side opposite the valve storage section and rotates around its lower end side as an axis perpendicular to the road surface of the monitor passage to open to an open position where the door surface is perpendicular to the road surface of the monitor passage.As a result, the door opening of the fire hydrant door can be made larger, making it easier for road users to handle the fire hydrant device, such as pulling out the fire hose, removing the water discharge nozzle connected to the fire hose, and operating the opening and closing operation section that opens and closes the fire hydrant valve.In addition, by opening the maintenance door, the manager can properly and easily inspect and repair the fire hydrant valve provided in the valve storage section located below the hose storage section.

(Effects of other enclosures in which fire extinguishers and electrical equipment are stored)
In addition, with regard to the first and second inventions, on one horizontal side of the housing, another housing in which a fire extinguisher is stored and in which specified electrical equipment is arranged is arranged, and the handle for opening and closing the fire extinguisher door, the operating part (operating handle) of the fire extinguisher, and the operating part of the electrical equipment are arranged in the other housing at a height that falls within the proper operating range. Therefore, for the storage part for the fire extinguisher and electrical equipment provided in the other housing, the handle for opening and closing the fire extinguisher door and the operating part of the fire extinguisher that are operated when a road user takes out the fire extinguisher, and the transmitter provided as electrical equipment, are within the proper operating range, so that when a road user stands on the road surface of the monitor's passage and takes out the fire extinguisher, it is not too high or too low, and the road user can take out the fire extinguisher safely in a natural posture without dropping it, and further, when operating the transmitter, it is not too high or too low, and can be operated appropriately.

(Effect of lowering the hose outlet position)
In addition, with regard to the second invention, a hose guide is provided in front of the valve storage section located on the lower inside of the housing, and the hose guide is formed with a hose outlet for pulling out to the outside the fire hose stored in the hose storage section located on the upper inside of the housing.Since the hose outlet is formed at a low position on the front side of the housing, the fire hose can be pulled out to a position close to the road surface of the monitor's passage, and hose flapping (the movement of the hose swinging around) associated with pulling out the hose can be reduced.

FIG. 1 is an explanatory diagram showing a first embodiment of a fire hydrant device installed on the road surface of a monitor passage from the front in an installed state in a tunnel. FIG. 2 is an explanatory diagram showing the fire hydrant device of FIG. 1 from the left side. FIG. 11 is an explanatory diagram showing another embodiment of a mounting structure for installing a fire hydrant device on the road surface of a monitor passage. 2 is an explanatory diagram showing the internal structure of a fire hydrant storage section in the fire hydrant device of FIG. 1 from the front with the front surface of the housing open. FIG. FIG. 2 is an explanatory diagram showing an internal structure of the fire hydrant device of FIG. 1 in which a fire hydrant device is disposed, as viewed from the side in cross section. FIG. 2 is an explanatory diagram showing an internal structure of the fire hydrant device mounted and fixed on the stand of FIG. 1 , in which a fire hydrant device is disposed, from the front with the front surface of the housing opened. 1 is an explanatory diagram showing a cross-sectional view of a fire hydrant door opening and closing mechanism as viewed from the side of a fire hydrant device. FIG. FIG. 2 is an explanatory diagram showing the fire hydrant device of FIG. 1 from the front with the fire hydrant door open. 1 is an explanatory diagram showing a fire hydrant device of the first embodiment from the front, in which the installation height of the monitor passage from the road surface is changed to a lower limit height. FIG. FIG. 11 is an explanatory diagram showing a second embodiment of a fire hydrant device installed on the road surface of a monitor passage from the front in an installed state in a tunnel. 11 is an explanatory diagram showing the internal structure of the fire hydrant storage section in the fire hydrant device of FIG. 10 from the front with the front surface of the housing open. FIG. 11 is an explanatory diagram showing the internal structure of a fire hydrant storage section in the fire hydrant device mounted and fixed on the stand in FIG. 10, from the front with the front surface of the housing open. FIG. FIG. 11 is an explanatory diagram showing the fire hydrant device of FIG. 10 from the front with the fire hydrant door open. FIG. 11 is an explanatory diagram showing a third embodiment of a fire hydrant device installed on the road surface of a monitor passage from the front in an installed state in a tunnel. FIG. 15 is an explanatory diagram showing the fire hydrant device of FIG. 14 from the left side. 15 is an explanatory diagram showing the internal structure of the fire hydrant storage section in the fire hydrant device of FIG. 14 from the front with the front surface of the housing open. FIG. FIG. 15 is an explanatory diagram showing a cross-section of the internal structure of the fire hydrant device of FIG. 14 in which the fire hydrant equipment is arranged, as viewed from the side. 15 is an explanatory diagram showing the internal structure of the fire hydrant device mounted and fixed to the stand in FIG. 14, in which the fire hydrant equipment is arranged, from the front with the front surface of the housing opened. FIG. 1 is an explanatory diagram showing a cross-sectional view of a fire hydrant door opening and closing mechanism as viewed from the side of a fire hydrant device. FIG. FIG. 15 is an explanatory diagram showing the fire hydrant device of FIG. 14 from the front with the fire hydrant door open. FIG. 13 is an explanatory diagram showing a fourth embodiment of a fire hydrant device installed on the road surface of a monitor passage from the front in an installed state in a tunnel. 22 is an explanatory diagram showing the internal structure of the fire hydrant storage section in the fire hydrant device of FIG. 21 from the front with the front surface of the housing open. FIG. 22 is an explanatory diagram showing the internal structure of the fire hydrant device mounted and fixed to the stand in FIG. 21 , in which the fire hydrant equipment is arranged, from the front with the front of the housing open. FIG. 22 is an explanatory diagram showing the opening and closing mechanism of the fire hydrant door of Figure 21 in cross section as seen from the side of the fire hydrant device. 22 is an explanatory diagram showing the fire hydrant device of FIG. 21 from the front with the fire hydrant door open. 22 is an explanatory diagram showing the fire hydrant device of FIG. 21 from the front with the maintenance door open. FIG. 13 is an explanatory diagram showing a modified example of the third embodiment of the fire hydrant device in which a hose outlet is arranged in a valve storage section, from the front with the front surface of the housing open. 28 is an explanatory diagram showing the structure of a hose outlet port with the first housing of FIG. 27 taken out. FIG. 28 is an explanatory diagram showing the internal structure of the fire hydrant device of FIG. 27 in cross section as viewed from the side.

Below, an embodiment of a fire hydrant device according to the present invention will be described with reference to the drawings. Note that the present invention is not limited to the following embodiment.

[Basic Concept of the Embodiment]
First, a basic concept of the embodiment will be described. The embodiment generally relates to a fire hydrant device that is exposed and installed in a guard passage provided along a tunnel wall.

Here, a "fire hydrant device" is a type of emergency equipment installed in areas subject to firefighting, such as tunnels on expressways and motorways, and is equipped or housed with fire hydrant equipment such as fire hoses, electrical equipment such as red indicator lights and transmitters, terminal boxes, and fire extinguishers, and is a concept that includes fire hydrant facilities in which fire hydrant devices are installed.

The fire hydrant device of the embodiment is installed at a predetermined height above the road surface of the guard passageway that is provided along the tunnel wall so as to be close to or in contact with the tunnel wall, and includes fire hydrant devices installed in a "wall-mounted structure" or "stationary structure" that exposes the fire hydrant device in the guard passageway.

As explained in the background art section, a "wall-mounted structure" is a structure that allows a fire hydrant device to be installed so as to be wall-mounted on the tunnel wall by installing a stand on the tunnel wall and attaching and fixing the fire hydrant device to the installed stand. A "stationary structure" is a structure that allows a fire hydrant device to be installed on the road surface of the guard passage by installing a stand on the road surface of the guard passage and attaching and fixing the fire hydrant device to the installed stand.

In addition, "mounting" refers to a structure that supports an object using pillars and beams, etc., and includes concepts such as support stand, foundation, base, seat, and base. In addition, "installed close to or in contact with the tunnel wall" includes installation close to the tunnel wall, installation with a part in contact with the tunnel wall, or installation with a part fixed to the tunnel wall.

The fire hydrant device according to the embodiment of the first invention is characterized in that a hose storage section in which a fire hose is stored is disposed on the lower interior side of the housing, and a valve storage section in which predetermined valves including a fire hydrant valve are provided on a pipe to which the fire hose is connected is disposed on the upper interior side of the housing.

In this embodiment, the vertical width of the hose storage section is a predetermined vertical width within a range that is equal to or less than a first vertical width that is the legally prescribed range for proper operation from the standing surface of road users, and is equal to or greater than a second vertical width based on the minimum bending diameter at which the fire hose can be bent without breaking.

The "appropriate operating range" here is the height range of 800 mm to 1500 mm above the road surface of the guard passage where road users stand, and therefore the first vertical width, which is the maximum vertical width of the hose storage section, is 700 mm in this embodiment.

The minimum bending diameter that a fire hose using a shape-retaining hose can bend without breaking is, for example, 340 mm. If the hose outer diameter is 40 mm and the hose is wrapped around the inside three times, the second vertical width, which is the minimum vertical width of the hose storage section, is approximately 500 mm, and the vertical width of the hose storage section located on the lower inside of the housing is a predetermined vertical width within the range of 500 mm to 700 mm.

Therefore, compared to conventional fire hydrant devices in which the vertical width (height) of the inside of the housing is the same as the vertical width (height) of the hose storage section, assuming the same storage volume for the fire hose, the hose storage section of the embodiment has a narrower vertical width and a wider horizontal width, so that even when a road user uses the fire hydrant device to pull out the fire hose to put out a fire, the narrow vertical width of the fire hose that is wound inward can reliably prevent the inwardly wound fire hose from collapsing while pulling out the fire hose, thereby preventing the work of pulling out the fire hose from being impeded.

In addition, when recovery workers need to rewind the fire hose after using the fire hydrant device, the hose storage section is located on the inside lower part of the housing and is narrow vertically and wide horizontally, making it easy to perform the recovery work of rewinding the fire hose inward and rewinding it back into the hose storage section.

In addition, the height of the guard passage at the bottom of the housing, which forms the bottom of the hose storage section, from the road surface is set to the lower limit of the appropriate operating range, so that the entire vertical width of the hose storage section falls within the appropriate operating range, and it is neither too high nor too low, allowing road users to operate the fire hose appropriately and easily in a natural posture.

The hose storage section is formed by partitioning the lower interior of the housing into a box-shaped area that opens to the front, and a lattice made of a cylindrical frame member is placed in the opening of the box-shaped area, and the fire hose is stored inside the box-shaped area, wound vertically inward.

Because of this, the hose storage section is formed as a box-shaped area on the inside lower side of the housing, so that the fire hose can be stored without being affected by other fire hydrant equipment, and the front opening of the box-shaped area is fitted with a lattice using a cylindrical or columnar frame member, so that the stored fire hose is supported in a state where it can be seen from the outside, and further, because the fire hose is stored rolled up inward vertically, it becomes possible for road users to pull out the fire hose smoothly and with little force when using the fire hydrant device.

The hose storage section has a hose outlet formed at the front opening of the box-shaped area, partitioned into a rectangle by a cylindrical frame member. This allows road users to smoothly pull out the fire hose, which is stored rolled up inside the lower interior of the housing, toward the fire source in front or to the side of the fire hydrant device, without disturbing it. Also, by forming the hose outlet at a low position on the front of the housing, the fire hose is pulled out to a position close to the road surface of the guard passage, reducing the hose's wild movement (the hose being swung around) when it is pulled out.

The hose storage section also has a nozzle holder near the outside of the hose outlet that detachably holds the water nozzle connected to the end of the fire hose pulled out from the hose outlet. Therefore, when a road user opens the fire hydrant door, the water nozzle is held in an easily visible position on the front side of the hose storage section located on the lower inside of the housing, making it possible to remove the water nozzle and pull out the fire hose without hesitation.

The hose storage unit is also provided with a fire hydrant valve opening/closing operation unit at a predetermined position on the front side of the box-shaped area, which remotely opens and closes the fire hydrant valve installed in the pipe that supplies fire water to the fire hose. Therefore, when a road user opens the fire hydrant door, the fire hydrant valve opening/closing operation unit, for example, the fire hydrant valve opening/closing lever, is located in an easily visible position on the front side of the hose storage unit located on the lower inside of the housing, and when removing the water discharge nozzle and pulling out the fire hose, the user can easily open the fire hydrant valve opening/closing lever and pull out the fire hose while spraying water from the water discharge nozzle.

The housing is also provided with a fire hydrant door at the door opening on the front of the hose storage section, which rotates vertically (downward) around its lower end as an axis to an open position perpendicular to the road surface of the monitor's passage. As a result, the open fire hydrant door does not obstruct passage through the monitor's passage, and the door opening can be made larger, making it easier for road users to handle the fire hydrant device, such as by pulling out the fire hose, removing the water discharge nozzle connected to the fire hose, and operating the opening/closing control unit that opens and closes the fire hydrant valve.

The housing also has a maintenance door at the front door opening of the valve storage section that rotates vertically (upward) around the upper end as an axis to open the door, relative to the road surface of the guard passage. This allows the manager to properly and easily inspect and repair the fire hydrant valves and other components installed in the valve storage section located above the hose storage section by opening the maintenance door.

The housing is also installed at a specified height above the road surface of the guard passage so that all or part of the hose storage section is within the appropriate operating range. This allows road users to pull out the fire hose when using the fire hydrant device while standing on the road surface of the guard passage, and allows recovery workers to rewind the fire hose after use to operate appropriately and easily in a natural posture without being too high or too low.

The housing also contains or has installed therein predetermined operation objects (operation devices and operation units), including the fire hydrant door opening/closing handle, the water discharge nozzle connected to the fire hose, the fire hydrant valve opening/closing operation unit, the water supply hydrant to which the fire brigade's hose is connected from outside, and the fire pump start button, and these operation objects are positioned so as to be within the appropriate operation range. This allows road users standing on the road surface of the monitor's passage to properly operate the fire hydrant door opening/closing handle, the water discharge nozzle, and the fire hydrant valve opening/closing operation unit in a natural posture, without being too high or too low, and also enables fire brigade personnel to properly connect and open the hose to the water supply hydrant, and to operate the fire pump start button.

In addition, the valve storage section, which is provided with valves including a fire hydrant valve on a pipe to which a fire hose is connected, is located on the upper inside of the housing, in an area excluding the hose storage section located on the lower side of the housing, so it is possible to ensure sufficient space within the housing above the hose storage section to place the valve storage section.

The fire hydrant device according to the embodiment of the second invention is characterized in that a hose storage section in which a fire hose is stored is disposed inside the upper part of the housing, and a valve storage section in which predetermined valves including a fire hydrant valve are provided on a pipe to which the fire hose is connected is disposed inside the lower part of the housing.

The basic concept of the embodiment corresponding to the second invention is the same as the basic concept of the embodiment corresponding to the first invention described above, except for the arrangement of the fire hydrant door and the maintenance door.

In the embodiment of the second invention, as a first arrangement of the fire hydrant door and the maintenance door, the housing is provided with a fire hydrant door that is arranged at the door opening on the front side opposite the hose storage section and rotates around the lower end side in a direction perpendicular to the road surface of the monitor's passage to an open position where the door surface is in a position perpendicular to the road surface of the monitor's passage. This allows the door opening of the fire hydrant door to be made larger, making it easier for road users to handle the fire hydrant device, such as pulling out the fire hose, removing the water discharge nozzle connected to the fire hose, and operating the opening and closing operation section that opens and closes the fire hydrant valve. In addition, the housing is provided with an upper door that is arranged at the door opening on the front side opposite the valve storage section and rotates around the upper end side in a direction perpendicular to the road surface of the monitor's passage to open it. This allows the manager to properly and easily inspect and repair the fire hydrant valves and other items provided in the valve storage section located below the hose storage section by opening the upper door.

In the second embodiment of the invention, as a second arrangement of the fire hydrant door and the maintenance door, the housing is provided with a fire hydrant door that is arranged at the front door opening opposite the hose storage section and rotates about the lower end side in a direction perpendicular to the road surface of the monitor passage to an open position where the door surface is in a position perpendicular to the road surface of the monitor passage. This allows the door opening of the fire hydrant door to be made larger, making it easier for road users to handle the fire hydrant device, such as pulling out the fire hose, removing the water discharge nozzle connected to the fire hose, and operating the opening/closing operation section that opens and closes the fire hydrant valve. In addition, the housing is provided with a maintenance door that is arranged at the front door opening opposite the valve storage section and rotates about the lower end side in a direction perpendicular to the road surface of the monitor passage to an open position where the door surface is in a position perpendicular to the road surface of the monitor passage. This allows the manager to properly and easily inspect and repair the fire hydrant valves and other items provided in the valve storage section located below the hose storage section by opening the maintenance door.

In the embodiment of the second invention, a hose guide is provided in front of the valve storage section located on the lower inside of the housing, and the hose guide has a hose outlet formed into a rectangle by a frame member for pulling out the fire hose stored in the hose storage section located on the upper inside of the housing. Therefore, by forming the hose outlet at a low position on the front of the housing, the fire hose can be pulled out to a position close to the road surface of the guard passage, and the hose's wild movement (the movement of the hose swinging around) associated with pulling out the hose can be reduced.

In addition, on one horizontal side of the housing, another housing in which a fire extinguisher is stored and in which predetermined electrical equipment is arranged is arranged, and the handle for opening and closing the fire extinguisher door, the operating part (operating handle) of the fire extinguisher, and the operating part of the electrical equipment are arranged on the other housing at a height that falls within the appropriate operating range. Therefore, for the storage part for the fire extinguisher and electrical equipment provided in the other housing, the handle for opening and closing the fire extinguisher door and the operating part of the fire extinguisher that road users operate when removing the fire extinguisher, and the transmitter provided as electrical equipment, are within the appropriate operating range, so that when a road user stands on the road surface of the guard passage and removes the fire extinguisher, they will not be too high or too low, and will be able to remove the fire extinguisher safely in a natural posture without dropping it, and the transmitter can also be operated appropriately without being too high or too low.

Specific embodiments are described below. In the specific embodiments shown below, a first embodiment of a fire hydrant device in which the vertical width of the hose storage section is maximum for the first invention is described, followed by a second embodiment of a fire hydrant device in which the vertical width of the hose storage section is minimum. Furthermore, a third embodiment of a fire hydrant device in which the vertical width of the hose storage section is maximum for the second invention is described, followed by a third embodiment of a fire hydrant device in which the vertical width of the hose storage section is minimum.

[Specific Contents of the Embodiment]
An embodiment of a fire hydrant device will be described below. The contents will be described separately as follows.
a. Fire hydrant device of first embodiment a1. Outline of the fire hydrant device a2. Installation of the fire hydrant device a3. Thinning of the fire hydrant device b. Internal structure of the fire hydrant device b1. Hose storage section b2. Valve storage section b3. Installation height of the fire hydrant device b4. Door opening/closing mechanism of the fire hydrant door b5. Lower limit of the height at which the fire hydrant device is installed c. Fire hydrant device of second embodiment c1. Outline of the fire hydrant device c2. Internal structure of the fire hydrant device c3. Minimum vertical width of the hose storage section c4. Valve storage section c5. Installation height of the fire hydrant device c6. Door opening/closing mechanism of the fire hydrant door d. Fire hydrant device of third embodiment d1. Outline of the fire hydrant device d2. Installation of the fire hydrant device d3. Thinning of the fire hydrant device d4. Internal structure of the fire hydrant device d5. Hose storage section d6. Storage section for valves d7. Installation height of fire hydrant device d8. Door opening/closing mechanism for fire hydrant door e. Fire hydrant device of fourth embodiment e1. Overview of fire hydrant device e2. Internal structure of fire hydrant device e3. Minimum vertical width of hose storage section e4. Storage section for valves e5. Installation height of fire hydrant device e6. Door opening/closing mechanism for fire hydrant door f. Modification of fire hydrant device of third embodiment g. Modification of the present invention

[a. Fire hydrant device of the first embodiment]
We will now explain a fire hydrant device according to a first embodiment of the first invention, in which a valve storage section is arranged on the upper side of the housing and a hose storage section is arranged on the lower side of the housing, with the vertical width of the hose storage section being maximized.

(a1. Overview of fire hydrant equipment)
First, an outline of the fire hydrant device of the first embodiment will be described. In this description, reference will be made to FIG. 1, which shows the first embodiment of the fire hydrant device installed on the road surface of the guard passage from the front (front side) in a state in which it is installed in a tunnel, and FIG. 2, which shows the fire hydrant device of FIG. 1 from the left side. Here, in the description of FIG. 1 and FIG. 2, the X-Y-Z directions are mutually perpendicular directions, and specifically, when the front surface of the fire hydrant device 10 is viewed from the front, the X direction is the left-right direction, the Y direction is the up-down direction, and the Z direction is the front-back direction. Also, the +X side in the X direction is the right side, the -X side is the left side, the +Y side in the Y direction is the upper side, the -Y side is the lower side, the +Z side in the Z direction is the front side, and the -Z side is the rear side. This point is the same in FIG. 3 to FIG. 26, which are embodiments of the present invention.

As shown in FIG. 1, the fire hydrant device 10 is installed on a stand 32 installed on the road surface of the monitor passage 34, and the housing of the fire hydrant device 10 is divided into a first housing 11a, a second housing 11b, and a third housing 11c.

A decorative frame 12a is attached to the front of the first housing 11a. A fire hydrant door 14 is disposed below the door opening 13 of the decorative frame 12a. When the lock is released by operating the door opening/closing handle 1420, the fire hydrant door 14 is opened downwards by hinges 14a, with the lower end as an axis, to a position perpendicular to the road surface of the monitor passage 34. A door storage recess 1410 is formed on the front of the housing below the door so that the fire extinguisher door 14 opens to a position perpendicular to the road surface of the monitor passage 34.

A maintenance door 15 that opens upwards around its upper end as an axis via hinges 15a is disposed above the door opening 13 of the decorative frame 12a. The upwardly open maintenance door 15 is kept open by a stay (support rod) disposed on the inside of the door.

As described below, the fire hydrant storage section inside the first housing 11a has a hose storage section formed on the lower side for storing a fire hose, and a valve storage section formed on the upper side for storing valves such as a fire hydrant valve.

A decorative frame 12b is attached to the front of the second housing 11b. An electrical door 18 that opens sideways to the right on a hinge 18a is located on the right side of the door opening of the decorative frame 12b, and an auxiliary door 20 that opens sideways to the left on a hinge 20a is located on the left side to allow access to the internal terminal boxes 30a and 30b.

In this embodiment, the storage space of the second housing 11b is expanded by the amount of the auxiliary door 20, and the terminal boxes 30a and 30b that were previously placed in the third housing 11c can now be stored in the second housing 11b.

The electrical door 18 is provided with electrical equipment such as a red indicator light 22, a transmitter 24, and a response lamp 28, and a telephone jack 26 is provided on the inside. The red indicator light 22 is always on, allowing the location of the fire hydrant device 10 to be confirmed from a distance. When the transmitter 24 is pressed in the event of a fire or other incident and the push button switch is turned on, it transmits a transmission signal, which is received by a disaster prevention receiving panel installed in an electrical room or the like and outputs a fire alarm. When the fire hydrant device 10 receives a response signal from the disaster prevention receiving panel, it causes the red indicator light 22 to flash and the response lamp 28 to light up.

A high-voltage terminal box 30a and a low-voltage terminal box 30b are arranged vertically on the rear surface of the second housing 11b opposite the auxiliary door 20. The high-voltage terminal box 30a uses a built-in terminal block to connect the high-voltage cable pulled in from outside the fire hydrant device 10 to the red indicator light 22. The low-voltage terminal box 30b uses a built-in terminal block to connect the low-voltage cable pulled in from outside the fire hydrant device 10 to the transmitter 24, response light 28, telephone jack 26, etc.

A decorative frame 12c is attached to the front of the third housing 11c. A fire extinguisher door 16 that opens sideways to the left on hinges 16a is disposed in the door opening of the decorative frame 12c, and two fire extinguishers 19 are stored in a fire extinguisher storage section inside the third housing 11c. In addition, a viewing window 17 is provided in the fire extinguisher door 16, making it possible to check the presence or absence of the fire extinguisher 19 from outside.

(a2. Installation of fire hydrant devices)
Next, the installation of the fire hydrant device in the guard passage will be described. As shown in Fig. 2, a road 38 is constructed in the longitudinal direction (left and right direction) of the tunnel at the bottom of the cylindrical (circular cross section) tunnel body constructed by the shield method, and a guard passage 34 is constructed at a predetermined height from the road 38 below the tunnel wall surface 25 along the road 38. The inside of the guard passage 34 is a duct in which a water supply main pipe 40 and cables are laid, and a water supply pipe 36 is branched off from the water supply main pipe 40 and drawn into the fire hydrant device 10.

Because it is difficult to remove the box from the tunnel wall 25 when using the shield construction method to install the fire hydrant device 10, a stand 32 is installed close to the tunnel wall 25 on the road surface of the guard passage 34, and the connected first housing 11a, second housing 11b, and third housing 11c are attached and fixed to the stand 32 to install the fire hydrant device 10. In addition, the upper part of the fire hydrant device 10 is fixed to the tunnel wall 25 by a housing support member 41 to prevent it from falling forward.

The height of the stand 32 is set so that the height from the road surface of the monitor's passage 34 to all operating objects, including the transmitter 24 and water discharge nozzles arranged on the fire hydrant device 10, falls within the legally prescribed appropriate operation range. As is well known, when the road surface of the monitor's passage 34 is taken as the standing position of road users, the legally prescribed appropriate operation range has a lower limit height H1 from the road surface of 800 mm and an upper limit height H2 of 1500 mm, and therefore the vertical width ΔH (= H2 - H1) of the appropriate operation range is 700 mm.

In the first embodiment of the fire hydrant device 10, in order to ensure that the entire vertical width of the hose storage section formed on the underside of the first housing 11a, which serves as the fire hydrant storage section of the fire hydrant device 10, falls within the vertical width ΔH (=700 mm) of the appropriate operation range, the installation height of the fire hydrant device 10 on the stand 32, i.e., the height from the road surface of the monitor passage 34 to the bottom surface of the fire hydrant device 10 (bottom surface of the housing), is 800 mm, which is the same as the lower limit value H1 of the appropriate operation range.

As shown in FIG. 2, the side shape of the stand 32 in this embodiment is an inverted trapezoid with the top side longer than the bottom side, and the rear side is an inclined surface that slopes diagonally downward along the curved shape of the tunnel wall 25. The stand structure of the fire hydrant device 10 is not limited to the inverted trapezoid stand 32 in FIG. 2, but may be an inverted triangular stand 320 as shown in FIG. 3, in which the vertical angle material in front of the stand 32 in FIG. 2 is arranged diagonally downward toward the tunnel wall side. The inverted triangular stand 320 in FIG. 3 ensures free space below the fire hydrant device 10, widening the road surface width of the monitor passage 34 and providing a standing position for road users who step below the fire hydrant device 10, making it easier to operate the fire hydrant device 10.

(a3. Thinning of fire hydrant device)
Next, the thinning of the fire hydrant device will be described. As shown in Fig. 2, in order to reduce the restriction on the passage width of the monitor passage 34 caused by the protrusion (projection) of the fire hydrant device 10 installed on the road surface of the monitor passage 34 by the stand 32 from the tunnel wall surface 25, the fire hydrant device 10 is made as thin as possible.

The fire extinguisher 19 stored in the third housing 11c is the largest in size in the front-to-rear direction among the devices stored in the fire hydrant device 10, and since the thickness (width in the front-to-rear direction) of the fire hydrant device 10 can be thinned to a size that allows the fire extinguisher 19 to be stored in the third housing 11c, the width of the fire hydrant device 10 is set to a predetermined width that corresponds to the outer diameter of the fire extinguisher 19 stored in the third housing 11c.

The outer diameter of the fire extinguisher is about 160 to 180 mm, and if a gap is provided so that the stored fire extinguisher does not come into contact with the third housing 11c, the minimum width of the fire hydrant device 10 is, for example, 250 mm or less, and the width of the fire hydrant device 10 is set to, for example, 250 mm. In contrast, the width of a conventional fire hydrant device 10 that is installed by cutting a box out of the wall of the tunnel body and embedding it in place is 300 mm or more, so the fire hydrant device 10 of this embodiment has a smaller width than the conventional device, making it possible to make the fire hydrant device 10 thinner.

In addition, in order to store a fire hose of the same specified length as a conventional fire hydrant device, for example a 30 m shape-retaining hose, in an inwardly rolled state, the first housing 11a of the fire hydrant device 10 has a larger width (width in the left-right direction) than the conventional fire hydrant device, making it possible to store a shape-retaining hose of the same specified length as a conventional fire hydrant device in an inwardly rolled state.

In addition, in conventional fire hydrant devices, the terminal boxes 30a, 30b were located on the rear surface of the housing behind the fire extinguisher storage section in which the fire extinguisher is stored. However, as the fire hydrant device 10 has become thinner, it is no longer possible to place the terminal boxes 30a, 30b on the rear surface of the housing behind the fire extinguisher storage section. Therefore, the width (left-right width) of the second housing 11b in which the electrical equipment is provided has been expanded to a width that allows the electrical equipment and terminal boxes to be placed.

[b. Internal structure of fire hydrant device]
Next, the internal structure of the fire hydrant device will be described. In this description, reference is made to Fig. 4, which shows the internal structure of the fire hydrant storage unit in the fire hydrant device in Fig. 1 from the front with the front of the housing open, and Fig. 5, which shows a cross-section from the side of the internal structure in which the fire hydrant equipment of the fire hydrant device in Fig. 1 is arranged. Fig. 5(A) shows a cross-section along the cutting line a-a in Fig. 4, Fig. 5(B) shows a cross-section along the cutting line b-b in Fig. 4, and Fig. 5(C) shows a cross-section along the cutting line c-c in Fig. 4.

The inside of the first housing 11a, which serves as the fire hydrant storage section, is divided into a lower hose storage section 42 and an upper valve storage section 44. The vertical width Hw of the hose storage section 42 is 700 mm, which is the same as the vertical width ΔH of the appropriate operation range shown in FIG. 2.

(b1. Hose storage section)
The hose storage section 42 will be described in more detail. In the hose storage section 42, a partition plate 46 is arranged as a horizontal plate at a height of 700 mm from the bottom surface of the first housing 11a, which corresponds to the vertical width ΔH of the appropriate operation range, and a partition plate 47 is arranged as a vertical plate at the left end of the partition plate 46, leaving a piping space, thereby forming a box-shaped area that is open to the front. The partition plates 46 and 47 may be a single plate bent into an L shape.

Cylindrical or columnar frame members 48 are provided at intervals vertically and horizontally at the front opening of the hose storage section 42, forming a lattice that supports the front side of the fire hose 54, and a hose outlet 50 partitioned into a rectangle by the frame members 48 is formed in the center of the front opening.

The fire hose 54 is stored inside the hose storage section 42, wound inward vertically. Here, the vertical width of the hose storage section 42 is 700 mm, and the horizontal width is, for example, about 1200 mm, so the length of one turn of the fire hose 54 is roughly 350 cm. If the length of the fire hose 52 is, for example, 30 m, it can be stored by winding it inward about 8 to 9 turns.

A nozzle 56 is attached to the end of the fire hose 54 pulled out from the hose outlet 50. The nozzle 56 is removably held in a nozzle holder 58 fixed to the frame member 48 on the right side of the hose outlet 50. As shown in FIG. 5(C), the nozzle 56 held in the nozzle holder 58 at the front of the hose storage section 42 is exposed in a position where it can be removed through the door opening when the fire hydrant door 14 is opened.

In addition, an operation box 70 for remotely operating the fire extinguisher valve 62 is disposed in front of the frame member 48 on the left side of the hose outlet 50, and the operation box 70 is provided with a fire hydrant valve opening/closing lever 72 that can be rotated up and down as shown in FIG. 5(B). The position of the fire hydrant valve opening/closing lever 72 shown in FIG. 5(B) is the closed position, and when rotated downward is the open position.

A fire pump start-up interlocking switch 78 is provided inside the operation box 70. The fire pump start-up interlocking switch 78 turns on when the fire hydrant valve opening/closing lever 72 is operated to the open position, and sends a pump start signal to the disaster prevention receiving panel to start the fire pump equipment.

A pump start switch 80 is provided on the left side of the frame member 48 on which the operation box 70 is located. When a firefighter connects a hose to the water hydrant 60 to extinguish a fire, the pump start switch 80 is turned on by pushing a button, and a pump start signal is sent to the disaster prevention receiving panel to start the fire pump equipment.

(b2. Valve storage section)
The valve storage section 44 will be described in more detail. As shown in Fig. 4, the water supply pipe 36 standing up via the stand 32 is led into a piping space formed next to the hose storage section 42 on the lower left side of the first housing 11a, and is connected to a branch joint 82 followed by a valve pipe 84 and a water faucet 60 used by the fire brigade.

The branch joint 82 branches horizontally (to the left) and then has the valve pipe 84 connected to its upper side, and the valve pipe 84 is arranged horizontally (to the right) after rising from the valve storage section 44. The valve pipe 84 arranged horizontally is provided with a fire hydrant valve 62, an automatic pressure regulating valve 64, and an inspection joint 66, in that order from the left side. The branch joint 82 may also branch rightward and then have the valve pipe 84 connected to its upper side.

The fire hydrant valve 62 is provided with an interlocking box 74, and a wire 76 connects it to an operation box 70 located in front of the hose storage section 42. A known wire link mechanism is configured in which the rotation associated with the opening and closing operation of the fire hydrant valve opening/closing lever 72 of the operation box 70 is transmitted to the interlocking box 74 via the wire 76 to open and close the fire hydrant valve 62.

The automatic pressure regulating valve 64 adjusts the pressure of the fire water supplied to the fire hose 54 to maintain a specified pressure. The inspection joint 66 is used to perform an actual water discharge test by attaching a water discharge test jig.

The valve pipe 84 continuing from the inspection joint 66 faces downward at its right end and is connected to the hose connection pipe 52 arranged vertically at the right end of the hose storage section 42. The hose connection pipe 52 bends to the left at the bottom end of the hose storage section 42, and the base side of the fire hose 54 is connected to its tip. An automatic drain valve 68 is provided at the bottom of the hose connection pipe 52. Note that the inspection joint 66 may be omitted, since an actual water discharge test can be performed by detaching the base side of the fire hose 54 from the hose connection pipe 52.

The automatic drain valve 68 is open when the fire hydrant valve 62 is closed and no pressure is applied, and allows the drainage of fire water remaining in the valve piping 84 and fire hose 54, which are the secondary side of the fire hydrant valve 62. The automatic drain valve 68 closes when pressure is applied due to the supply of fire water caused by the opening of the fire hydrant valve 62.

(b3. Installation height of fire hydrant device)
The installation of the fire hydrant device with the hose storage section set to a vertical width within the appropriate operating range in the guard passage will be described in more detail below. In this explanation, reference will be made to Figure 6, which shows the internal structure of the fire hydrant device in Figure 1, in which the fire hydrant equipment is arranged, from the front with the front of the housing opened.

As shown in FIG. 6, the fire hydrant device 10 is installed on the stand 32 above the monitor passage 34 so that the height of the monitor passage 34 from the road surface is 800 mm, which corresponds to the lower limit height H1 of the appropriate operation range. In other words, the height of the stand 32 on which the fire hydrant device 10 is installed is 800 mm, which corresponds to the lower limit height H1 of the appropriate operation range.

In this way, the fire hydrant device 10, which is installed via the stand 32 at a height of 800 mm above the road surface of the monitor passage 34, has a vertical width Hw of the hose storage section 42 formed on the underside of the first housing 11a of 700 mm, the same as the vertical width ΔH (= H2 - H1) of the appropriate operation range. As a result, the bottom surface of the hose storage section 42 is at the lower limit height H1 of the appropriate operation range of 800 mm, and the top surface of the hose storage section 42 is at the upper limit height H2 of the appropriate operation range of 1500 mm, and the entire vertical width of the hose storage section 42 is included (coincides) with the appropriate operation range.

All of the operating devices and operating sections that are provided on the fire hydrant device 10 and that are to be operated must be within the appropriate operating range (range of vertical width ΔH = 700 mm), with a lower limit height H1 of 800 mm and an upper limit height H2 of 1500 mm.

The objects to be operated in the first housing 11a, which serves as the fire hydrant storage section, for the hose storage section 42, include the door opening/closing handle 1420 of the fire hydrant door 14 (see FIG. 1), the inwardly coiled fire hose 54, the nozzle 56, the fire hydrant valve opening/closing lever 72, and the pump start switch 80, while for the valves storage section 44, the water supply hydrant 60 (operation handle and hose connection port).

The objects to be operated in the second housing 11b are the transmitter 24 and the telephone jack 26. The objects to be operated in the third housing 11c are the door opening/closing handle 1610 of the fire extinguisher door 16 and the operating handle on the top of the fire extinguisher 19.

In the fire hydrant device 10 of this embodiment, all of the above-mentioned operating objects are included in the appropriate operating range (range of vertical width ΔH = 700 mm) with a lower limit height H1 of 800 mm and an upper limit height H2 of 1500 mm, so that the operating devices and operating parts to be operated are located at a position (height) that is neither too high nor too low and is easy to operate for road users, firefighters, and recovery workers standing on the road surface of the monitor passage 34.

(b4. Fire hydrant door opening/closing mechanism)
The door opening/closing mechanism of the fire hydrant door provided in the fire hydrant device will be described in more detail. In this description, reference will be made to Fig. 7, which shows the door opening/closing mechanism of the fire hydrant door in a cross section seen from the side of the fire hydrant device, and Fig. 8, which shows the fire hydrant device of Fig. 1 with the fire hydrant door open from the front. Fig. 7(A) shows the fire hydrant door in a closed state, and Fig. 7(B) shows the fire hydrant door in an open state.

The door opening/closing mechanism 90 of the fire hydrant door 14 shown in FIG. 7 rotates vertically (downward) around the lower end of the fire hydrant door 14 as an axis relative to the road surface of the monitor passage 34, opening the fire hydrant door 14 to the open position where the door surface of the fire hydrant door 14 is in a position perpendicular to the road surface of the monitor passage 34. For this reason, a door storage recess 1410, which is a recess corresponding to the vertical width, horizontal width and thickness of the fire hydrant door 14, is formed on the front surface of the housing corresponding to the closed and open positions of the fire hydrant door 14.

The hinge 14a, which serves as the door rotation axis of the door opening/closing mechanism 90, is provided on the inner surface of the door storage recess 1410 that corresponds to the lower end of the door opening (the lower end of the fire hydrant door 14 in the closed position), and supports the lower end of the fire hydrant door 14 in the closed position so that it can rotate freely.

The fire hydrant door 14 is provided with a damper 96 to prevent impact when it is opened to the open position. One end of the damper 96, which is the cylinder side, is fixed to a frame member of the hose storage section by a fixing part 98, and the other end, which is the rod side, is supported by a shaft part 94 on a damper mounting part 92 provided on the inside of the lower end part of the fire hydrant door 14. Here, the damper mounting part 92 is tilted at a predetermined angle so that the rear side (the side inside the housing) is positioned higher than the front side so that the fire hydrant door 14 can be opened by smoothly rotating 180 degrees, and a downward force is applied by the damper 96 when the fire hydrant door 14 is opened.

As shown in FIG. 7(A), when a road user unlocks the fire hydrant door 14 by pulling the door opening/closing handle 1420 (see FIG. 1) toward himself in order to open the closed fire hydrant door 14, the fire hydrant door 14 rotates 180° downward around the hinge 14a and is stored in the lower side corresponding to the open position of the door storage recess 1410, as shown in FIG. 7(B), and is positioned perpendicular or nearly perpendicular to the road surface of the monitor passage 34, facing the front of the housing below the lower end of the door opening and the front of the stand 32.

In this way, when the fire hydrant door 14 is opened, as shown in FIG. 8, most of the upper front part of the hose storage section 42 is opened through the door opening, except for a small part on the lower side, and all of the objects to be operated are within the appropriate operating range, so that road users can easily and appropriately remove the nozzle 56, pull out the fire hose 54, and operate the fire hydrant valve opening/closing lever 72, firefighters can connect the hose to the hydrant 60, open the handle, and operate the fire pump start switch 80, and recovery workers can rewind the fire hose 54 into the hose storage section 42, all without having to assume an awkward position.

In addition, the open fire hydrant door 14 does not obstruct passage through the supervisor passage 34, and the operation of the fire hydrant device 14 can be easily performed without being obstructed by the open fire hydrant door 14.

When a staff member is to carry out work such as inspection or repair of the valve storage section located on the upper side of the first housing 11a of the fire hydrant device 10, the maintenance door 15 is opened upwards around the upper end of the hinge 15a at the upper end as an axis to carry out the necessary work.

(b5. Minimum height at which fire hydrant devices are installed)
1 to 8, the fire hydrant device 10 is installed at a height of 800 mm, which is the lower limit height H1 of the appropriate operation range from the road surface of the observer passage 34 by the stand 32, but it is possible to lower the height at which the fire hydrant device is installed, provided that the operation target is included in the appropriate operation range, and the lower limit height in this case will be explained below. In this explanation, reference will be made to Figure 9, which shows the front view of the fire hydrant device of the first embodiment in which the installation height from the road surface of the observer passage is changed to the lower limit height.

As shown in FIG. 9, in this embodiment, the minimum height H3 at which the fire hydrant device 10 is installed using the stand 32 is approximately 600 mm, which is lower than the installation height H1 of 800 mm described above.

The condition for the lower limit height H3 is that all of the operating objects provided on the fire hydrant device 10 are within the appropriate operating range (a range of 700 mm vertical width) with a lower limit height H1 of 800 mm and an upper limit height H2 of 1500 mm.

In the fire hydrant device 10, the object to be operated that is located at the lowest position is, for example, the pump start switch 80. For this reason, the height H3 of the stand 32 is determined so that the lower end of the pump start switch 80 is at a height of 800 mm, which is the lower limit height H1 of the appropriate operation range. In this embodiment, the height H3 of the stand 32 is approximately 600 mm.

Therefore, even if the fire hydrant device 10 is installed at a height H3 of 600 mm using the stand 32, all of the operating objects provided on the fire hydrant device 10 are included in the appropriate operating range (a vertical width range of 700 mm) with a lower limit height H1 of 800 mm and an upper limit height H2 of 1500 mm, making it possible for road users, firefighters, recovery workers, and others to easily operate the device in a natural posture.

[c. Fire hydrant device of the second embodiment]
We will now explain a fire hydrant device according to a second embodiment of the first invention, in which a valve storage section is arranged on the upper side of the housing and a hose storage section is arranged on the lower side of the housing, with the vertical width of the hose storage section being minimized.

(c1. Overview of fire hydrant equipment)
First, an overview of the fire hydrant device of the second embodiment will be described with reference to Fig. 10, which shows the second embodiment of the fire hydrant device installed on the road surface of the guard passage from the front (front) in the installed state in the tunnel.

As shown in FIG. 10, the fire hydrant device 10 is installed on a stand 32 installed on the road surface of the monitor passage 34, and the housing of the fire hydrant device 10 is divided into a first housing in which the decorative panel 12a is arranged, a second housing in which the decorative panel 12b is arranged, and a third housing in which the decorative frame 12c is arranged.

A fire hydrant door 14 is arranged below the door opening 13 of the decorative frame 12a, which forms the front of the first housing, and opens downward on a hinge 14a to a position perpendicular to the road surface of the monitor passage 34, with its lower end as an axis. A door storage recess 1410 is formed on the front of the housing below the door so that the fire hydrant door 14 opens to a position perpendicular to the road surface of the monitor passage 34. A maintenance door 15 is arranged above the door opening 13 of the decorative frame 12a, and opens upward on a hinge 15a at its upper end as an axis.

The vertical width of the fire hydrant door 14 corresponds to the minimum vertical width of the hose storage section located inside, so the vertical width of the door is smaller than that of the first embodiment in FIG. 1, and the vertical width of the maintenance door 15 is larger by that amount. The rest of the configuration and arrangement are the same as those of the first embodiment in FIG. 1, so the same reference numerals are used and the description is omitted.

(c2. Internal structure of fire hydrant device)
Next, the internal structure of the fire hydrant device according to the second embodiment will be described with reference to Fig. 11, which shows the internal structure of the fire hydrant storage unit in the fire hydrant device of Fig. 10 from the front with the front of the housing open.

As shown in FIG. 11, the inside of the first housing 11a, which serves as the fire hydrant storage section, is divided into a lower hose storage section 42 and an upper valve storage section 44, and the vertical width Hw of the hose storage section 42 is the minimum vertical width based on the minimum bending diameter at which the fire hose 54 can be bent without breaking, for example, 500 mm.

(c3. Minimum vertical width of hose storage section)
The minimum vertical width Hw of the hose storage section 42 is determined based on the minimum bending diameter D at which the fire hose 54 can be bent without breaking, the outer diameter d of the fire hose 54, and the number of overlapping windings N based on the number of turns required to inwardly wind and store the hose length of 30 m of the fire hose 54,
Hw = D + (d x 2N)
It is calculated as:

For example, if D = 340 mm, d = 40 mm, and N = 3,
Hw = 340 + (40 x 6) = 580 mm
The minimum vertical width of the hose storage section 42, 500 mm, is an example, and may be any value determined according to the minimum bending diameter D at which the fire hose 54 can be bent without breaking, the outer diameter d of the fire hose 54, and the number of overlapping windings N.

Here, the vertical width of the hose storage section 42 is 500 mm, and the horizontal width is, for example, about 1200 mm, so the length of one turn of the fire hose 54 is approximately 3.1 m. If the length of the fire hose 52 is, for example, 30 m, it can be stored by winding it inward about 10 to 11 turns.

For this reason, the hose storage section 42 has a partition plate 46 arranged as a horizontal plate at a height of 500 mm, which is the minimum value of the vertical width Hw, from the bottom surface of the first housing 11a, and a partition plate 47 arranged as a vertical plate at the left end of the partition plate 46, leaving a piping space, thereby forming a box-shaped area that is open to the front.

At the front opening of the hose storage section 42, frame members 48 using cylindrical pipe members are installed at intervals vertically and horizontally to provide a lattice that supports the front of the fire hose 54, and a hose outlet 50 partitioned into a rectangle by the frame members 48 is formed in the center of the front opening. Inside the hose storage section 42, the fire hose 54 is stored wound inward vertically.

A nozzle 56 is attached to the end of the fire hose 54 pulled out from the hose outlet 50. The nozzle 56 is removably held in a nozzle holder 58 fixed to the frame member 48 on the right side of the hose outlet 50.

In addition, an operation box 70 for remotely operating the fire extinguishing valve 62 is located in front of the frame member 48 on the left side of the hose outlet 50, and the operation box 70 is provided with a fire hydrant valve opening/closing lever 72 that can be rotated up and down.

A fire pump start-up interlock switch 78 is provided inside the operation box 70. In addition, a pump start-up switch 80 is provided on the left side of the frame member 48 in which the operation box 70 is located.

(c4. Valve storage section)
The valve storage section 44 is the area above the hose storage section 42. As the vertical width Hw of the hose storage section 42 is set to a minimum of 500 mm, the vertical width is larger than that of the valve storage section 42 of the first embodiment shown in Figure 4, and ample space is ensured.

The water supply pipe 36, which is raised via the stand 32 to the valve storage section 44, is pulled into the piping space formed on the left side of the hose storage section 42, and is connected to a branch joint 82 followed by a valve pipe 84 and a water faucet 60 used by the fire brigade.

As shown in FIG. 4, the branch joint 82 branches horizontally (to the left) and has the valve pipe 84 connected to the upper side, and the valve pipe 84 is arranged horizontally (to the right) after rising from the valve storage section 44. The valve pipe 48 arranged horizontally is provided with a fire hydrant valve 62, an automatic pressure regulating valve 64, and an inspection joint 66 in that order from the left side. The branch joint 82 may also branch rightward and have the valve pipe 84 connected to the upper side.

The fire hydrant valve 62 is provided with an interlocking box 74, and a wire 76 connects it to an operation box 70 located in front of the hose storage section 42. The rotation of the fire hydrant valve opening/closing lever 72 of the operation box 70 when opened or closed is transmitted to the interlocking box 74 via the wire 76 to open or close the fire hydrant valve 62.

The valve pipe 84 continuing from the inspection joint 66 faces downward at the right end and is connected to the hose connection pipe 52 arranged vertically at the right end of the hose storage section 42. The hose connection pipe 52 bends to the left at the bottom end of the hose storage section 42, and the base side of the fire hose 54 is connected to its tip. An automatic drain valve 68 is provided at the bottom end of the hose connection pipe 52. The rest of the configuration and function of the hose storage section 42 and the valve storage section 44 are the same as in the first embodiment, so the same reference numerals are used and a description is omitted.

(c5. Installation height of fire hydrant device)
The installation of the fire hydrant device 10 of the second embodiment, in which the vertical width Hw of the hose storage section 42 is set to a minimum value of 500 mm, in the monitor passage 34 will be described in more detail. In this description, reference will be made to Figure 12, which shows the internal structure of the fire hydrant device of Figure 10, in which the fire hydrant equipment is arranged, from the front with the front of the housing opened.

As shown in FIG. 12, the fire hydrant device 10 is installed on the stand 32 above the monitor passage 34 so that the height of the monitor passage 34 from the road surface is 800 mm, which corresponds to the lower limit height H1 of the appropriate operation range. In other words, the height of the stand 32 on which the fire hydrant device 10 is installed is 800 mm, which corresponds to the lower limit height H1 of the appropriate operation range.

In this way, the fire hydrant device 10 is installed via the stand 32 at a height of 800 mm above the road surface of the guard passage 34, and the entire vertical width of 500 mm of the hose storage section 42 formed on the underside of the first housing 11a is included in the vertical width of 700 mm, which is the appropriate operating range.

Operable objects arranged within a vertical range of 500 mm include, for the hose storage section 42, the door opening/closing handle 1420 of the fire hydrant door 14 (see Figure 1), the inwardly coiled fire hose 54, the nozzle 56, the fire hydrant valve opening/closing lever 72, and the pump start switch 80, while for the valve storage section 44, the water supply hydrant 60 (operation handle and hose connection port).

The objects to be operated in the second housing 11b are the transmitter 24 and the telephone jack 26. The objects to be operated in the third housing 11c are the door opening/closing handle 1610 of the fire extinguisher door 16 and the operating handle on the top of the fire extinguisher 19.

Even in the second embodiment of the fire hydrant device 10, all of the above-mentioned operating objects are included in the appropriate operating range ΔH (range of 700 mm vertical width) with a lower limit height H1 of 800 mm and an upper limit height H2 of 1500 mm, so that the operating devices and operating parts to be operated are located in an easy-to-operate position that is neither too low nor too high for road users, firefighters, and recovery workers standing on the road surface of the monitor passage 34.

(c6. Fire hydrant door opening/closing mechanism)
The door opening/closing mechanism of the fire hydrant door provided in the fire hydrant device 10 of the second embodiment will be described in more detail. In this description, reference will be made to Fig. 13 which shows the fire hydrant device of Fig. 10 with the fire hydrant door open from the front.

The fire hydrant door 14 rotates vertically (downward) with respect to the road surface of the monitor passage 34 around the lower end side of the fire hydrant door 14 by the door opening/closing mechanism, and opens to an open position in which the door surface of the fire hydrant door 14 is in a position perpendicular to the road surface of the monitor passage 34, as shown in FIG. 13. The door opening/closing mechanism of the fire hydrant door 14 is the same as that of the first embodiment shown in FIG. 7, so a description thereof will be omitted.

As shown in FIG. 13, when the fire hydrant door 14 is opened, the front of the hose storage section 42, which is most of the upper side of the hose storage section 42 except for a small part of the lower side, is opened through the door opening, and all the objects to be operated are within the proper operating range, so that road users can easily and appropriately remove the nozzle 56, pull out the fire hose 54, and operate the fire hydrant valve opening/closing lever 72, firefighters can connect the hose to the water hydrant 60, open the handle, and operate the fire pump start switch 80, and recovery workers can rewind the fire hose 54 into the hose storage section 42, all without having to assume an awkward position.

In addition, the open fire hydrant door 14 does not obstruct passage through the supervisor passage 34, and the fire hydrant device 14 can be easily operated without being obstructed by the open fire hydrant door 14.

[d. Fire hydrant device of the third embodiment]
We will now explain a third embodiment of a fire hydrant device according to the second invention, in which a hose storage section is arranged on the upper side of the housing and a valve storage section is arranged on the lower side of the housing, with the vertical width of the hose storage section being maximized.

(d1. Overview of fire hydrant equipment)
First, an overview of the fire hydrant device of the third embodiment will be described with reference to Fig. 14, which shows the third embodiment of the fire hydrant device installed on the road surface of the guard passage from the front (front) side in a state in which it is installed in a tunnel, and Fig. 15, which shows the fire hydrant device of Fig. 14 from the left side.

As shown in FIG. 14, the fire hydrant device 10 is installed on a stand 32 installed on the road surface of the monitor passage 34, and the housing of the fire hydrant device 10 is divided into a first housing 11a, a second housing 11b, and a third housing 11c.

As described below, the fire hydrant storage section inside the first housing 11a has a hose storage section for storing a fire hose on the upper side and a valve storage section for storing valves such as a fire hydrant valve on the lower side.

A decorative frame 12a is attached to the front of the first housing 11a. A fire hydrant door 14 is disposed below the door opening 13 of the decorative frame 12a, corresponding to the lower part of the hose storage section disposed on the upper side of the first housing 11a and the valve storage section disposed on the lower side of the first housing 11a. When the lock is released by operating the door opening/closing handle 1420, a fire hydrant door 14 is disposed below the door opening 13 of the decorative frame 12a, and opens downwards on a hinge 14a with its lower end as an axis to a position perpendicular to the road surface of the monitor passage 34. A door storage recess 1410 is formed on the front of the housing below the door so that the fire extinguisher door 14 opens to a position perpendicular to the road surface of the monitor passage 34.

In addition, a maintenance door 15 that opens upward around its upper end as an axis via hinges 15a is disposed above the door opening 13 of the decorative frame 12a, corresponding to the upper part of the hose storage section disposed on the upper side of the first housing 11a. In this embodiment, the maintenance door 15 functions as an upper door. The upwardly opened maintenance door 15 is kept open by a stay (support rod) disposed on the inside of the door. All other points are the same as those of the first embodiment in FIG. 1, so the same reference numerals are used and the description is omitted.

(d2. Installation of fire hydrant devices)
Next, the installation of the fire hydrant device in the guard passage will be described. As shown in Fig. 15, the stand 32 is installed on the road surface of the guard passage 34 close to the tunnel wall surface 25, and the first housing 11a, the second housing 11b, and the third housing 11c, which are connected to each other, are attached and fixed to the stand 32, thereby installing the fire hydrant device 10.

The height of the stand 32 is set so that the height from the road surface of the monitor's passage 34 to all operating objects, including the transmitter 24 and water discharge nozzles arranged on the fire hydrant device 10, falls within the legally prescribed appropriate operation range. As is well known, when the road surface of the monitor's passage 34 is taken as the standing position of road users, the legally prescribed appropriate operation range has a lower limit height H1 from the road surface of 800 mm and an upper limit height H2 of 1500 mm, and therefore the vertical width ΔH (= H2 - H1) of the appropriate operation range is 700 mm.

In the third embodiment of the fire hydrant device 10, when the vertical width (height) of the first housing 11a of the fire hydrant storage unit in the fire hydrant device 10 is, for example, 1000 mm, in order to ensure that all of the hose storage units formed on the upper side of the first housing 11a are within the vertical width ΔH (= 700 mm) of the appropriate operation range, the installation height of the fire hydrant device 10 by the stand 32, i.e., the height H3 from the road surface of the monitor passage 34 to the bottom surface (bottom surface of the housing) of the fire hydrant device 10 is, for example, H3 = 500 mm. For this reason, the height of the stand 32 is reduced to about 60% of the height of 800 mm of the stand 32 in the first embodiment in which the valve storage unit is arranged on the upper side of the first housing 11a and the hose storage unit is arranged on the lower side, as shown in FIG. 2. Since the other points are the same as those of the first embodiment in FIG. 2, the same reference numerals are used and the description is omitted.

(d3. Thinner Fire Hydrant Device)
Next, the thinning of the fire hydrant device will be described. As shown in Fig. 15, even in the fire hydrant device 10 of the third embodiment, in order to reduce the restriction of the passage width of the monitor passage 34 due to the protrusion (protrusion) from the tunnel wall surface 25 when the fire hydrant device 10 is installed on the road surface of the monitor passage 34 by the stand 32, the fire hydrant device 10 is made as thin as possible. Although the thinning of the fire hydrant device 10 is optional, as in the fire hydrant device of the first embodiment in Fig. 2, the fire hydrant device 10 can be made thin enough to accommodate the fire extinguisher 19, so it is set to, for example, 250 mm. Other points are the same as in the first embodiment in Fig. 2, so the description will be omitted.

(d4. Internal structure of fire hydrant device)
Next, the internal structure of the fire hydrant device will be described. In this description, reference is made to Fig. 16, which shows the internal structure of the fire hydrant storage section in the fire hydrant device in Fig. 14 from the front with the front of the housing open, and Fig. 17, which shows a cross-section from the side of the internal structure in which the fire hydrant device in Fig. 14 is arranged. Fig. 17(A) shows a cross-section along the cutting line d-d in Fig. 16, Fig. 16(B) shows a cross-section along the cutting line ee in Fig. 16, and Fig. 17(C) shows a cross-section along the cutting line f-f in Fig. 16.

The inside of the first housing 11a, which serves as the fire hydrant storage section, is divided into an upper hose storage section 42 and a lower valve storage section 44. The vertical width Hw of the hose storage section 42 is 700 mm, the same as the vertical width ΔH of the appropriate operation range shown in FIG. 15.

(d5. Hose storage section)
The hose storage section 42 will be described in more detail. In the hose storage section 42, a partition plate 46 is arranged as a horizontal plate at a height of 700 mm from the top surface of the first housing 11a, which corresponds to the vertical width Hw of the appropriate operation range, and a partition plate 47 is arranged as a vertical plate at the left end of the partition plate 46, leaving a piping space, thereby forming a box-shaped area that is open to the front. The partition plates 46 and 47 may be a single plate bent into an L shape.

Cylindrical or columnar frame members 48 are provided at intervals vertically and horizontally at the front opening of the hose storage section 42, forming a lattice that supports the front side of the fire hose 54, and a hose outlet 50 partitioned into a rectangle by the frame members 48 is formed in the center of the front opening.

The fire hose 54 is stored inside the hose storage section 42, wound inward vertically. Here, the vertical width of the hose storage section 42 is 700 mm, and the horizontal width is, for example, about 1200 mm, so the length of one turn of the fire hose 54 is roughly 3.5 m. If the length of the fire hose 52 is, for example, 30 m, it can be stored by winding it inward about 8 to 9 turns.

A nozzle 56 is attached to the end of the fire hose 54 pulled out from the hose outlet 50. The nozzle 56 is removably held in a nozzle holder 58 fixed to the frame member 48 on the right side of the hose outlet 50. As shown in FIG. 17(C), the nozzle 56 held in the nozzle holder 58 at the front of the hose storage section 42 is exposed in a position where it can be removed through the door opening when the fire hydrant door 14 is opened.

In addition, an operation box 70 for remotely operating the fire extinguisher valve 62 is disposed in front of the frame member 48 on the left side of the hose outlet 50, and the operation box 70 is provided with a fire hydrant valve opening/closing lever 72 that can be rotated up and down as shown in FIG. 17(B). The position of the fire hydrant valve opening/closing lever 72 shown in FIG. 17(B) is the closed position, and when rotated downwards, the open position.

A fire pump start-up interlocking switch 78 is provided inside the operation box 70. The fire pump start-up interlocking switch 78 turns on when the fire hydrant valve opening/closing lever 72 is operated to the open position, and sends a pump start signal to the disaster prevention receiving panel to start the fire pump equipment.

A pump start switch 80 is provided on the left side of the frame member 48 on which the operation box 70 is located. When a firefighter connects a hose to the water hydrant 60 to extinguish a fire, the pump start switch 80 is turned on by pushing a button, and a pump start signal is sent to the disaster prevention receiving panel to start the fire pump equipment.

(d6. Valve storage section)
The valve storage section 44 will be described in more detail. As shown in Fig. 16, the water supply pipe 36 erected via the stand 32 is drawn into a piping space formed next to the hose storage section 42 on the lower left side of the first housing 11a, and a water supply faucet 60 used by the fire brigade is connected to the upper side of a branch joint 82. Also, a valve pipe 84 is connected to the lateral side (left direction) of the branch joint 82.

The valve piping 84 from the branch joint 82 is provided with the fire hydrant valve 62, automatic pressure regulating valve 64, and inspection joint 66, in that order from the left side. The fire hydrant valve 62 is provided with an interlocking box 74, and a wire 76 is connected between the interlocking box 74 and the operation box 70, which is located in front of the hose storage section 42. A known wire link mechanism is configured in which the rotation associated with the opening and closing operation of the fire hydrant valve opening and closing lever 72 of the operation box 70 is transmitted to the interlocking box 74 via the wire 76 to open and close the fire hydrant valve 62.

The valve pipe 84 connected to the inspection joint 66 is bent upward at the right end and connected to the hose connection pipe 52 arranged vertically at the right end of the hose storage section 42, and the base side of the fire hose 54 is connected to the tip of the hose connection pipe 52. In addition, an automatic drain valve 68 is provided at the lower end of the bent part of the valve pipe 84 just before the hose connection pipe 52.

The automatic drain valve 68 is open when the fire hydrant valve 62 is closed and no pressure is being applied, and allows the drainage of fire water remaining in the valve piping 84 and the fire hose 54, which are the secondary side of the fire hydrant valve 62. The automatic drain valve 68 closes when it receives pressure due to the supply of fire water caused by the opening of the fire hydrant valve 62. Note that the inspection joint 66 may be omitted, since an actual water discharge test can be performed by detaching the base side of the fire hose 54 from the hose connection pipe 52.

(d7. Installation height of fire hydrant device)
The installation of the fire hydrant device with the hose storage section set to the vertical width within the appropriate operating range in the guard passage will be described in more detail below. In this explanation, reference will be made to Figure 18, which shows the internal structure of the fire hydrant device in which the fire hydrant equipment is arranged, which is attached and fixed by the stand in Figure 14, from the front with the front of the housing opened.

As shown in FIG. 18, the fire hydrant device 10 is installed on the monitor passage 34 by a stand 32 with a height H3 of 500 mm so that the vertical width Hw of the hose storage section 42 is at a height that matches the lower limit height H1 and upper limit height H2 of the appropriate operating range from the road surface of the monitor passage 34, which is in the range of 800 mm to 1500 mm.

In this way, the fire hydrant device 10 installed via the stand 32 at a height of 500 mm above the road surface of the monitor passage 34 has a vertical width Hw of the hose storage section 42 formed on the upper side of the first housing 11a of 700 mm, the same as the vertical width ΔH (H2-H1) of the appropriate operation range shown in Figure 15. As a result, the bottom surface (partition plate 46) of the hose storage section 42 is at the lower limit height H1 of the appropriate operation range of 800 mm, and the top surface of the hose storage section 42 is at the upper limit height H2 of the appropriate operation range of 1500 mm, and the entire vertical width Hw of the hose storage section 42 is included (coincides) with the appropriate operation range.

All of the operating devices and operating sections that are provided on the fire hydrant device 10 and that are to be operated must be within the appropriate operating range (range of vertical width ΔH = 700 mm), with a lower limit height H1 of 800 mm and an upper limit height H2 of 1500 mm.

The objects to be operated in the first housing 11a, which serves as the fire hydrant storage section, for the hose storage section 42, include the door opening/closing handle 1420 of the fire hydrant door 14 (see FIG. 14), the inwardly coiled fire hose 54, the nozzle 56, the fire hydrant valve opening/closing lever 72, and the pump start switch 80, while for the valves storage section 44, the water supply hydrant 60 (operation handle and hose connection port).

The objects to be operated in the second housing 11b are the transmitter 24 and the telephone jack 26. The objects to be operated in the third housing 11c are the door opening/closing handle 1610 of the fire extinguisher door 16 and the operating handle on the top of the fire extinguisher 19.

In the fire hydrant device 10 of this embodiment, all of the above-mentioned operating objects are included in the appropriate operating range (range of vertical width ΔH = 700 mm) with a lower limit height H1 of 800 mm and an upper limit height H2 of 1500 mm, so that the operating devices and operating parts to be operated are located at a position (height) that is neither too high nor too low and is easy to operate for road users, firefighters, and recovery workers standing on the road surface of the monitor passage 34.

(d8. Fire hydrant door opening and closing mechanism)
The door opening/closing mechanism of the fire hydrant door provided in the fire hydrant device will be described in more detail. In this description, reference will be made to Fig. 19, which shows the door opening/closing mechanism of the fire hydrant door in a cross section seen from the side of the fire hydrant device, and Fig. 20, which shows the fire hydrant device of Fig. 14 with the fire hydrant door open from the front. Fig. 19(A) shows the fire hydrant door in a closed state, and Fig. 19(B) shows the fire hydrant door in an open state.

The door opening/closing mechanism 90 of the fire hydrant door 14 shown in FIG. 19 is similar to the door opening/closing mechanism 90 shown in the first embodiment shown in FIG. 7, and is designated by the same reference numerals and description thereof is omitted.

As shown in FIG. 19(A), when a road user unlocks the fire hydrant door 14 by pulling the door opening/closing handle 1420 (see FIG. 14) toward himself in order to open the closed fire hydrant door 14, the fire hydrant door 14 rotates 180° downward around the hinge 14a and is stored in the lower side corresponding to the open position of the door storage recess 1410, as shown in FIG. 19(B), and is positioned perpendicular or nearly perpendicular to the road surface of the monitor passage 34, facing the front of the housing below the lower end of the door opening and the front of the stand 32.

In this way, when the fire hydrant door 14 is opened, as shown in FIG. 20, the lower front part of the hose storage section 42 opens through the door opening, except for the upper maintenance door 15 part, and all operation objects are included in the appropriate operation range, so that road users can easily and appropriately remove the nozzle 56, pull out the fire hose 54 and operate the fire hydrant valve opening/closing lever 72, firefighters can connect the hose to the hydrant 60, open the handle and operate the fire pump start switch 80, and recovery workers can rewind the fire hose 54 into the hose storage section 42 without having to assume an awkward posture.

In addition, the open fire hydrant door 14 does not obstruct passage through the supervisor passage 34, and the operation of the fire hydrant device 14 can be easily performed without being obstructed by the open fire hydrant door 14.

In addition, when the fire hose 54 is to be drained and rewound into the hose storage section 42 after using the fire hydrant device 10, the maintenance door 15 is opened upward around its upper end as an axis by the upper hinge 15a, and the fire hose 52 is rewound inward.

[e. Fire hydrant device of the fourth embodiment]
We will now explain a fire hydrant device according to a fourth embodiment of the second invention, in which a hose storage section is arranged on the upper side of the housing and a valve storage section is arranged on the lower side of the housing, and the vertical width of the hose storage section is minimized.

(e1. Overview of fire hydrant equipment)
First, an overview of the fire hydrant device of the fourth embodiment will be described with reference to Fig. 21, which shows the fourth embodiment of the fire hydrant device installed on the road surface of the guard passage from the front (front) in the installed state in the tunnel.

As shown in FIG. 21, the fire hydrant device 10 is installed on a stand 32 installed on the road surface of the monitor passage 34, and the housing of the fire hydrant device 10 is divided into a first housing in which the decorative panel 12a is arranged, a second housing in which the decorative panel 12b is arranged, and a third housing in which the decorative frame 12c is arranged.

Since a hose storage section is located on the upper side of the first housing 11a, a fire hydrant door 14 that opens to a position perpendicular to the road surface of the downward guard passage 34 is located above the door opening 13 of the decorative frame 12a that forms the front side of the first housing 11a by means of a hinge 14a, with its lower end as an axis. The fire hydrant door 14 opens to a position perpendicular to the road surface of the guard passage 34.

In addition, since a valve storage section is located below the first housing 11a, a maintenance door 15 that opens to a position perpendicular to the road surface of the downward monitor passage 34 using a lower hinge 15a as an axis is located below the door opening 13 of the decorative frame 12a of the first housing 11a, and a door storage recess 1410 is formed on the front of the housing below the door so that the maintenance door 15 opens to a position perpendicular to the road surface of the monitor passage 34.

Here, the fire hydrant door 14 is placed above the door opening 13, and the maintenance door 15 is placed below it, and in order to enable each to open downward around their lower ends, the maintenance door 15 is placed in a closed position shifted in the depth direction so as not to overlap with the fire hydrant door 14. For this reason, the depth of the door storage recess 1410 formed in the door opening of the first housing 11a is set to the thickness of the fire hydrant door 14 plus the thickness of the maintenance door 15 (see FIG. 24).

The vertical width of the fire hydrant door 14 corresponds to the minimum vertical width of the hose storage section located inside, so the vertical width of the door is smaller than that of the third embodiment in FIG. 14, and the vertical width of the maintenance door 15 is larger by that amount. The rest of the configuration and arrangement are the same as those of the third embodiment in FIG. 14, so the same reference numerals are used and the description is omitted.

(e2. Internal structure of fire hydrant device)
Next, the internal structure of the fire hydrant device according to the fourth embodiment will be described with reference to Fig. 22, which shows the internal structure of the fire hydrant storage unit in the fire hydrant device of Fig. 21 from the front with the front of the housing open.

As shown in FIG. 22, the inside of the first housing 11a, which serves as the fire hydrant storage section, is divided into an upper hose storage section 42 and a lower valve storage section 44, and the vertical width Hw of the hose storage section 42 is the minimum vertical width based on the minimum bending diameter at which the fire hose 54 can be bent without breaking, for example, 500 mm.

(e3. Minimum vertical width of hose storage section)
The minimum vertical width Hw of the hose storage section 42 is determined based on the minimum bending diameter D at which the fire hose 54 can be bent without breaking, the outer diameter d of the fire hose 54, and the number of overlapping windings N based on the number of turns required to inwardly wind and store the hose length of 30 m of the fire hose 54,
Hw = D + (d x 2N)
It is calculated as:

For example, if D = 340 mm, d = 40 mm, and N = 2,
Hw = 340 + (40 x 4) = 500 mm
The minimum vertical width of the hose storage section 42, 500 mm, is an example, and may be any value determined according to the minimum bending diameter D at which the fire hose 54 can be bent without breaking, the outer diameter d of the fire hose 54, and the number of overlapping windings N.

Here, the vertical width of the hose storage section 42 is 500 mm, and the horizontal width is, for example, about 1200 mm, so the length of one turn of the fire hose 54 is approximately 3.1 m. If the length of the fire hose 52 is, for example, 30 m, it can be stored by winding it inward about 10 to 11 turns.

For this reason, the hose storage section 42 has a partition plate 46 arranged as a horizontal plate at a height of 500 mm, which is the minimum value of the vertical width Hw, from the top surface of the first housing 11a, and a partition plate 47 arranged as a vertical plate at the left end of the partition plate 46, leaving a piping space, thereby forming a box-shaped area that is open to the front.

At the front opening of the hose storage section 42, frame members 48 using cylindrical pipe members are installed at intervals vertically and horizontally to provide a lattice that supports the front of the fire hose 54, and a hose outlet 50 partitioned into a rectangle by the frame members 48 is formed in the center of the front opening. Inside the hose storage section 42, the fire hose 54 is stored wound inward vertically.

A nozzle 56 is attached to the end of the fire hose 54 pulled out from the hose outlet 50. The nozzle 56 is removably held in a nozzle holder 58 fixed to the frame member 48 on the right side of the hose outlet 50.

In addition, an operation box 70 for remotely operating the fire hydrant valve 62 is disposed in front of the frame member 48 on the left side of the hose outlet 50, and the operation box 70 is provided with a fire hydrant valve opening/closing lever 72 that can be rotated up and down.

A fire pump start-up interlock switch 78 is provided inside the operation box 70. In addition, a pump start-up switch 80 is provided on the left side of the frame member 48 in which the operation box 70 is located.

(e4. Valve storage section)
The valve storage section 44 is the area below the hose storage section 42, and as the vertical width Hw of the hose storage section 42 is set to a minimum of 500 mm, the vertical width is larger than that of the valve storage section 42 of the third embodiment shown in Figure 18, and ample space is ensured.

The water supply pipe 36, which is raised above the valve storage section 44 via the stand 32, is pulled into the piping space formed on the left side of the hose storage section 42, and is connected above the branch joint 82 to a water supply faucet 60 used by the fire brigade.

As shown in Figure 18, the branch joint 82 branches horizontally (to the left) and is connected to a valve pipe 84, with a fire hydrant valve 62, an automatic pressure regulating valve 64, and an inspection joint 66 installed in that order from the left side.

The fire hydrant valve 62 is provided with an interlocking box 74, and a wire 76 connects it to an operation box 70 located in front of the hose storage section 42. The rotation of the fire hydrant valve opening/closing lever 72 of the operation box 70 when opened or closed is transmitted to the interlocking box 74 via the wire 76 to open or close the fire hydrant valve 62.

The valve pipe 84 connected to the inspection joint 66 is bent upward at the right end and connected to the hose connection pipe 52 arranged vertically at the right end of the hose storage section 42. An automatic drain valve 68 is provided at the lower end of the bent part of the valve pipe 84 just before the hose connection pipe 52. The rest of the configuration and function of the hose storage section 42 and the valve storage section 44 are the same as those in the third embodiment, so the same reference numerals are used and the description is omitted.

(e5. Installation height of fire hydrant device)
The installation of the fire hydrant device 10 of the fourth embodiment, in which the vertical width Hw of the hose storage section 42 is set to a minimum value of 500 mm, in the watchman passage 34 will be described in more detail. In this description, reference will be made to Figure 23, which shows the internal structure of the fire hydrant device, in which the fire hydrant equipment is arranged, mounted and fixed on the stand in Figure 21, from the front with the front of the housing opened.

As shown in FIG. 23, the fire hydrant device 10 is installed on the guard passage 34 by the stand 32 so that the vertical width Hw of the hose storage section 42, which is a range of 500 mm, is included in the appropriate operation range from a lower limit height H1 of 800 mm from the road surface of the guard passage 34 to an upper limit height H2 of 1500 mm. In this case, if the height of the bottom (partition plate 46) of the hose storage section 42 is the lower limit height H1 of 800 mm from the road surface of the guard passage 34 and the vertical width of the valve storage section 44 is 500 mm, the height H3 of the stand 32 on which the fire hydrant device 10 is installed is 300 mm, making it possible to reduce the height of the stand 32 to 60% of the height of the third embodiment shown in FIG. 18.

In this way, the fire hydrant device 10 is installed via the stand 32 at a height of 300 mm above the road surface of the guard passage 34, and the entire 500 mm vertical width Hw of the hose storage section 42 formed on the upper side of the first housing 11a is included in the range of vertical width ΔH = 700 mm, which is the appropriate operating range.

Operable objects arranged within the range of a vertical width Hw of 500 mm include, for the hose storage section 42, the door opening/closing handle 1420 of the fire hydrant door 14 (see FIG. 21), the inwardly coiled fire hose 54, the nozzle 56, the fire hydrant valve opening/closing lever 72, and the pump start switch 80, while for the valve storage section 44, the water hydrant 60 (operation handle and hose connection port).

The objects to be operated in the second housing 11b are the transmitter 24 and the telephone jack 26. The objects to be operated in the third housing 11c are the door opening/closing handle 1610 of the fire extinguisher door 16 and the operating handle on the top of the fire extinguisher 19.

Even in the fourth embodiment of the fire hydrant device 10, all of the above-mentioned operating objects are included in the appropriate operating range (range of vertical width ΔH = 700 mm) with a lower limit height H1 of 800 mm and an upper limit height H2 of 1500 mm, so that the operating devices and operating parts to be operated are located in an easy-to-operate position that is neither too low nor too high for road users, firefighters, and recovery workers standing on the road surface of the monitor passage 34.

(e6. Fire hydrant door opening/closing mechanism)
The door opening/closing mechanism of the fire hydrant door provided in the fire hydrant device 10 of the fourth embodiment will be described in more detail. In this description, reference will be made to Fig. 24, which shows the door opening/closing mechanism of the fire hydrant door in cross section as seen from the side of the fire hydrant device, Fig. 25, which shows the fire hydrant device of Fig. 21 with the fire hydrant door open from the front, and Fig. 26, which shows the fire hydrant device of Fig. 21 with the maintenance door open from the front. Fig. 24(A) shows the fire hydrant door and the maintenance door in a closed state, Fig. 14(B) shows the fire hydrant door in an open state, and Fig. 24(C) shows the maintenance door in an open state.

As shown in FIG. 24(A), the fire hydrant door 14 provided in correspondence with the hose storage section 42 arranged on the upper side of the first housing 11a of the fire hydrant device 10 is in a closed position in which the front of the door coincides with the front of the housing door opening. In addition, the maintenance door 15 provided in correspondence with the valve storage section 44 arranged on the lower side of the first housing 11a is in a closed position shifted in the depth direction so as not to overlap with the fire hydrant door 14. For this reason, the depth of the door storage recess 1410 formed in the door opening of the first housing 11a is set to a depth obtained by adding the thickness of the maintenance door 15 to the thickness of the fire hydrant door 14.

The fire hydrant door 14 is opened and closed by a door opening/closing mechanism 90, which is the same as the door opening/closing mechanism 90 of the first embodiment shown in FIG. 7, and therefore is given the same reference numeral and description thereof is omitted.

The door opening/closing mechanism of the maintenance door 15 rotates around the hinge 15a at the lower end in a direction perpendicular to the surface of the monitor passage 34, and opens to an open position where the door surface of the maintenance door 15 is perpendicular to the surface of the monitor passage 34. If the fire hydrant door 14 is structured to open and close upwards around the upper end as an axis, the maintenance door 15 can be opened and closed regardless of the state of the fire hydrant door 14.

When a road user uses the fire hydrant device 10, as shown in FIG. 24(A), the door opening/closing handle 1420 (see FIG. 21) of the closed fire hydrant door 14 is pulled toward the user to unlock it. As shown in FIG. 24(B), the fire hydrant door 14 rotates 180° downward around the hinge 14a and is stored at the lower side (in front of the closed maintenance door 15) corresponding to the open position of the door storage recess 1410, facing the front of the housing below the lower end of the door opening and the front of the stand 32, and is in a position perpendicular or nearly perpendicular to the road surface of the monitor passage 34. In this case, the maintenance door 15 is recessed by the thickness of the fire hydrant door 14, so the maintenance door 15 does not prevent the fire hydrant door 14 from being opened.

In this way, when the fire hydrant door 14 is opened, as shown in FIG. 25, the front of the hose storage section 42 opens through the door opening, and all operation objects are included in the appropriate operation range, so that road users can easily and appropriately remove the nozzle 56, pull out the fire hose 54, and operate the fire hydrant valve opening/closing lever 72, firefighters can connect the hose to the hydrant 60, open the handle, and operate the fire pump start switch 80, and recovery workers can rewind the fire hose 54 into the hose storage section 42, all without having to assume an awkward position.

In addition, the open fire hydrant door 14 does not obstruct passage through the supervisor passage 34, and the operation of the fire hydrant device 14 can be easily performed without being obstructed by the open fire hydrant door 14.

When maintenance personnel inspect or repair the fire hydrant device 10, the door open/close handle 1510 (see FIG. 21) of the maintenance door 15 in the closed state is pulled toward the operator to unlock it as shown in FIG. 24(A). As shown in FIG. 24(C), the maintenance door 15 rotates 180° downward around the hinge 15a and is stored at the lower side (in front of the maintenance door 15 in the closed state) corresponding to the open position of the door storage recess 1410, facing the front of the housing below the lower end of the door opening and the front of the stand 32, and is in a position perpendicular or nearly perpendicular to the road surface of the monitor passage 34.

In this way, when the maintenance door 15 is opened, the front of the valve storage section 44 is opened through the door opening as shown in FIG. 26, making it possible to easily and appropriately carry out inspection, repair, and other work on valves such as the fire hydrant valve 62.

In addition, the open maintenance door 15 does not obstruct passage through the supervisor passage 34, and inspection and repair work on the fire hydrant device 14 can be easily performed from the front without being obstructed by the open maintenance door 15.

In addition, when the maintenance door 15 shown in FIG. 26 is in an open state, the fire hydrant door 14 can be opened with the maintenance door 15 open. Therefore, if a fire breaks out during inspection or repair work with the inspection door 15 open, the fire hydrant door 14 can be opened with the inspection door 15 open, making it possible to use the fire hydrant device 10.

[f. Modification of the third embodiment of the fire hydrant device]
Next, a fire hydrant device according to a modification of the third embodiment in which the hose outlet is provided in the valve storage section arranged at the lower inside of the housing will be described. In this description, reference will be made to Fig. 27, which shows a modification of the third embodiment of the fire hydrant device in which the hose outlet is arranged in the valve storage section from the front with the front of the housing open, Fig. 28, which shows the structure of the hose outlet by removing the first housing of Fig. 27, and Fig. 29, which shows a cross section of the internal structure of the fire hydrant device of Fig. 27 as seen from the side. Fig. 29(A) shows a cross section taken along the section line d-d in Fig. 27, and Fig. 29(B) shows a cross section taken along the section line ee in Fig. 27.

As shown in FIG. 27, the fire extinguishing device 10 of this embodiment is characterized in that the fire extinguishing hose 54, which is stored in an inwardly wound state in the hose storage section 42 located on the upper inside of the housing, is pulled out to the outside through a hose outlet 102 formed in a hose guide 100 that stands upright on the front side of the valve storage section located on the lower inside of the housing.

As shown in FIG. 28, a lattice frame 48 is placed at the front opening of the box-shaped hose storage section 42, which is divided by partition plates 46 and 47, and a hose guide 100 is fixed upright to the bottom surface of the lower housing at the center front of the lattice frame 48. The hose guide 100 uses a cylindrical or columnar frame member and has a portal frame 104 formed in a portal shape, with a lower frame 108 placed horizontally below the portal frame 104, and a U-shaped hose relief section 106 is formed in the upper horizontal frame of the portal frame 104 to allow the passage of a fire hose 54 that is curved in the depth direction and opens forward.

As shown in FIG. 29, a sufficient gap in the depth direction is formed between the lattice frame 48 of the hose storage section 42 and the hose guide 100 erected at the front of the bottom surface of the housing of the valve storage section 44 to allow the fire hose 54 to pass through, and the fire hose 54 taken out from the central opening of the lattice frame 48 can be pulled out to the outside through the hose outlet 102 of the hose guide 100 located below (see FIG. 27 and FIG. 28).

The fire hose 54 is connected to the water discharge nozzle 56, which is detachably held by a nozzle holder 58 fixed to the lattice frame 48 as shown in FIG. 27. In this case, the fire hose 54 passes through the hose outlet 102 of the hose guide 100 and is then connected to the water discharge nozzle 56 held by the nozzle holder 58 of the lattice frame 48. At this time, the fire hose 54 passes through the hose relief portion 106 of the guide frame 100, allowing it to return to the depth side without being obstructed by the hose guide 100, and it can be placed in a position where it can be connected to the water discharge nozzle 56 without difficulty. The rest of the structure is the same as that of the third embodiment shown in FIG. 16, so the same reference numerals are used and the description is omitted.

In this way, the hose outlet 50, which was formed at a high position in the third embodiment of FIG. 16, can be formed at a low position in this embodiment by providing the hose guide 100 on the side of the valve storage section 44 located on the inside lower side of the housing, and the fire hose 54 can be pulled out to a position close to the road surface of the guard passage, reducing hose flailing (the movement of the hose swinging around) that occurs when the hose is pulled out. The structure in which the hose outlet 102 shown in FIG. 27 to FIG. 29 is formed at a low position in the valve storage section 44 can also be applied to the fire hydrant device of the fourth embodiment described above.

[g. Modifications of the present invention]
Modifications of the fire hydrant device according to the present invention will be described. In addition to the above-described embodiment, the fire hydrant device of the present invention includes the following modifications.

(Hose storage section)
The hose storage section provided on the lower or upper side of the housing is a box-shaped area with a short vertical width and a long horizontal width, and when the fire hose is wound inward within the box-shaped area, if the horizontal width of the hose storage section becomes long, the fire hose may bend downward due to its own weight at the center part of the upper inside of the box-shaped area. In order to prevent the fire hose from bending downward at the center part of the upper inside of the box-shaped area, a cylindrical or columnar hose support member (hose support pole) is placed at a predetermined height in the depth direction at each part near both sides of the lower part of the box-shaped area, and the fire hose is wound inward on the hose support member, pushing up the center part of the lower side of the fire hose, reducing the bending radius of the curved parts on both sides of the fire hose, and increasing the rigidity of the fire hose. In this way, by increasing the rigidity and supporting the curved parts on both sides of the fire hose, it is possible to prevent the fire hose from bending downward at the center part of the upper inside.

(Nozzle holder)
In the above embodiment, the nozzle holder that detachably holds the water-discharge nozzle is fixed to a lattice frame member that separates the front opening of the hose storage section, but is not limited to this and may be fixed, for example, to the back side of the fire hydrant door.

(Fire hydrant valve opening/closing operation section)
In the above embodiment, the operation box equipped with the fire hydrant valve opening/closing lever that constitutes the fire hydrant valve opening/closing operation unit is fixed to a lattice frame member that separates the front opening of the hose storage unit, but is not limited to this and may be fixed, for example, to the back side of the fire hydrant door.

(Fire hydrant installed by wall-mounted structure)
The above embodiment has been described as an example of a fire hydrant device installed in a stationary structure in which a stand is installed on the road surface of the monitor's passage and the fire hydrant device is attached and fixed to the installed stand, but this is not limited to this, and the same is also applicable to a fire hydrant device installed in a wall-mounted structure in which a stand is installed on the tunnel wall and the fire hydrant device is attached and fixed to the installed stand.

(Housing of fire hydrant device)
In the above embodiment, the electrical equipment is disposed in the second housing and the fire extinguisher is housed in the third housing, but the second housing and the third housing may be a single housing.

(others)
Furthermore, the present invention includes appropriate modifications that do not impair the objects and advantages of the present invention, and is not limited to the numerical values shown in the above embodiment.

10: Fire hydrant device 11a: First housing 11b: Second housing 11c: Third housing 12a, 12b, 12c: Decorative frame 14: Fire hydrant door 1410: Door storage recess 1420, 1510, 1610: Door opening and closing handle 15: Maintenance door 16: Fire extinguisher door 17: Viewport 18: Electrical door 19: Fire extinguisher 20: Auxiliary door 22: Red indicator light 24: Transmitter 25: Tunnel wall 26: Telephone jack 28: Response lamp 30a, 30b: Terminal box 32, 320: Stand 34: Supervisor passage 36: Water supply pipe 38: Road 40: Water supply main pipe 41: Housing support member 42: Hose storage section 44: Valve storage section 46, 47: Partition plate 48: Rack Child frame 50: Hose outlet 52: Hose connection pipe 54: Fire hose 56: Nozzle 58: Nozzle holder 60: Hydrant 62; Fire hydrant valve 64: Automatic pressure adjusting valve 66: Inspection joint 68: Automatic drain valve 70: Operation box 72: Fire hydrant valve opening/closing lever 74: Interlocking box 76: Wire 78: Fire pump start interlocking switch 80: Fire pump start switch 82: Branch joint 84: Valve piping 90: Door opening/closing mechanism 92: Damper attachment part 94: Shaft part 96: Damper 98: Fixing part 100: Hose guide 102: Hose outlet 104: Gate-shaped frame 106: Hose relief part 108: Lower frame

Claims (18)

A fire hydrant device installed at a predetermined height above the road surface of a guard passage provided along the wall of a tunnel having a road, in close proximity to or in contact with the tunnel wall,
A hose storage section containing a fire hose is located at the bottom inside the housing,
A fire hydrant device characterized in that a valve storage section in which specified valves including a fire hydrant valve are provided in a piping to which the fire hose is connected is disposed on the upper interior side of the housing.
A fire hydrant device installed at a predetermined height above the road surface of a guard passage provided along the wall of a tunnel having a road, in close proximity to or in contact with the tunnel wall,
A hose storage section in which a fire hose is stored is disposed on the upper inside of the housing,
A fire hydrant device characterized in that a valve storage section in which specified valves including a fire hydrant valve are provided in a pipe to which the fire hose is connected is disposed at the lower inside of the housing.
The fire hydrant device according to claim 1 or 2,
A fire hydrant device characterized in that the vertical width of the hose storage section is a predetermined vertical width within a range that is equal to or less than a first vertical width that is the legally prescribed appropriate operating range from the standing surface of a road user, and is equal to or greater than a second vertical width based on the minimum bending diameter at which the fire hose can be bent without breaking.
The fire hydrant device according to claim 3,
A fire hydrant apparatus, characterized in that the appropriate operation range is a range of 800 mm to 1500 mm above the road surface of a monitor's walkway where road users stand, and the first vertical width is a maximum of 700 mm.
The fire hydrant device according to claim 3,
This fire hydrant device is characterized in that, when the minimum bending diameter that the fire hose can be bent without breaking is 340 mm, the hose outer diameter is 40 mm, and the hose is wound inside twice, the second vertical width is a minimum of 500 mm.
The fire hydrant device according to claim 1 or 2,
The hose storage section is
The lower interior side of the housing is partitioned into a box-shaped area having an opening at the front,
A lattice using a cylindrical or columnar frame member is disposed at a front opening of the box-shaped area;
A fire hydrant device characterized in that the fire hose is stored in the box-shaped area while being wound inward vertically.
The fire hydrant device according to claim 6,
The fire hydrant device is characterized in that the hose storage section has a hose outlet that is partitioned into a rectangular shape by the frame member formed at a front opening of the box-shaped area.
The fire hydrant device according to claim 7,
The fire hydrant device is characterized in that the hose storage section is provided with a nozzle holding section near the outside of the hose outlet, which detachably holds a water discharge nozzle connected to the end of the fire hose pulled out from the hose outlet.
The fire hydrant device according to claim 6,
The hose storage section is characterized in that it is provided with a fire hydrant valve opening/closing operation section at a predetermined position on the front side of the box-shaped area, which remotely opens and closes a fire hydrant valve installed in a piping that supplies fire water to the fire hose.
The fire hydrant device according to claim 1,
The fire hydrant device is characterized in that the housing is provided with a fire hydrant door at the door opening on the front of the hose storage section, which rotates perpendicular to the road surface of the monitor passage around its lower end as an axis and opens to an open position where the door surface is perpendicular to the road surface of the monitor passage.
The fire hydrant device according to claim 1,
The fire hydrant device is characterized in that the housing is provided with a maintenance door at the door opening on the front of the valve storage section, which can be opened by rotating vertically around the upper end side relative to the road surface of the monitor passage.
The fire hydrant device according to claim 3,
A fire hydrant device characterized in that the housing is installed at a predetermined height above the road surface of the monitor passage so that all or part of the vertical width of the hose storage section is within the proper operation range.
The fire hydrant device according to claim 12,
The housing accommodates or places a predetermined operation target therein,
A fire hydrant device, characterized in that the specified operation target is located at a height that falls within the appropriate operation range.
The fire hydrant device according to claim 13,
A fire hydrant device characterized in that the specified operation objects include a fire hydrant door opening/closing handle, a water discharge nozzle connected to the fire hose, an opening/closing operation part for a fire hydrant valve, a water supply hydrant to which a fire brigade hose is connected from the outside, and a fire pump start button.
The fire hydrant device according to claim 3,
Another housing in which a fire extinguisher is housed and in which predetermined electrical equipment is arranged is disposed on one side of the housing in the horizontal direction,
A fire hydrant device characterized in that the other casing is arranged at a height such that the opening and closing handle of the fire extinguisher door, the operating part of the fire extinguisher, and the operating part of the electrical equipment are within the appropriate operation range.
The fire hydrant device according to claim 2,
The housing includes:
a fire hydrant door that is disposed at a front door opening facing the hose storage section and a part of the valve storage section, and that rotates about its lower end side in a direction perpendicular to the road surface of the monitor passage to an open position where the door surface is perpendicular to the road surface of the monitor passage;
an upper door that is disposed in the door opening on the front side facing the upper side of the hose storage section and that rotates about its upper end side in a direction perpendicular to the road surface of the guard passage to open;
A fire hydrant device comprising:
The fire hydrant device according to claim 2,
The housing includes:
a fire hydrant door that is disposed at a front door opening facing the hose storage section and rotates about its lower end side in a direction perpendicular to the road surface of the monitor passage to an open position where the door surface is perpendicular to the road surface of the monitor passage;
a maintenance door that is disposed at a door opening on the front side opposite to the valve storage section and that rotates about its lower end side in a direction perpendicular to the road surface of the monitor passage to an open position where the door surface is perpendicular to the road surface of the monitor passage;
A fire hydrant device comprising:
The fire hydrant device according to claim 2,
A hose guide is provided in front of the valve storage section arranged on the lower inside of the housing,
The hose guide is formed with a hose outlet for pulling out the fire hose stored in the hose storage section arranged on the upper inside side of the housing to the outside.

Images