JP7061165B2 - Fire detector cover - Google Patents

Description

The present invention relates to a fire detector cover that covers the fire detector in order to temporarily block infrared rays radiated to a fire detector installed as an emergency facility in a facility such as a tunnel.

When repair work or large-scale repair work is carried out in a facility such as a tunnel, sparks such as gas burners and sanders used during the work are generated. The fire detector installed as an emergency facility in the above facility has a problem of detecting this spark as a flame caused by a fire and notifying a road administrator or the like of a fire signal. Although the fire detector normally detects the flame, it is not an actual fire but a false alarm associated with the construction work, so it is necessary to prevent such a false alarm. In order to prevent false alarms, it is possible to turn off the power of the fire detector before construction, but the power of the fire detector outside the construction section where fire monitoring is required is also turned off, so fire monitoring is not possible. Will be. For this reason, if you want to prevent false alarms without turning off the power of the fire detector, set the receiver so that the receiver that receives the fire signal from the fire detector does not output fire information to other equipment. It was necessary to have an observer always on standby in front of the receiving panel to determine whether it was a false alarm due to construction work or an actual fire.

Japanese Patent Application Laid-Open No. 2003-296894

Therefore, in the present invention, the sparks generated when the fire detector performs construction in a facility such as a tunnel by temporarily blocking the infrared rays emitted to the fire detector without turning off the power of the fire detector, etc. It is an object of the present invention to provide a fire detector cover that detects a fire flame and prevents an erroneous report from being issued.

The present invention is for solving the above-mentioned problems, and has the following configurations.

(1) The present invention is a fire detector cover that covers the fire detector in order to temporarily block the infrared rays radiated to the fire detector, and is a sheet-shaped cover member and at least one of the cover members. A fire characterized by being provided with a light-shielding portion for blocking infrared rays provided in the portion, a phosphorescent portion or a reflective portion provided on the surface of the cover member, and an attachment means for attaching the cover member to the fire detector. It is a detector cover.

A fire detector that detects the flame of a fire in a general facility detects the occurrence of a fire by detecting infrared rays generated from the flame. Therefore, according to the present invention, a fire detector cover provided with a sheet-shaped cover member provided with a light-shielding portion for blocking infrared rays is used as a fire detector when repair work or large-scale repair work in a facility is performed. By covering it, infrared rays emitted from sparks such as gas burners and sanders used during construction to the fire detector are temporarily blocked so that sparks such as gas burners and sanders are not detected as fire flames. can do. In addition, since it is only necessary to cover the fire detector with the fire detector cover when using it, it is not necessary to turn off the power of the fire detector, and it is only necessary to remove the cover after the construction, so that the handling is easy. Further, the phosphorescent portion or the reflecting portion provided on the surface of the cover member of the fire detector cover emits light by the phosphorescent portion or reflects light when the light is applied by the reflecting portion. Therefore, if you forget to remove the fire detector cover from the fire detector after construction, the phosphorescent part reflects light by the light emitting part or the reflecting part, so it is easy to notice that you forgot to remove it, and you can prevent forgetting to remove the fire detector cover. be able to. In addition, as a means of attaching the fire detector cover to the fire detector, for example, by narrowing the opening of the cover member with a belt equipped with a mouth rubber or a hook-and-loop fastener, the opening of the cover member can be narrowed so that the fire detector cannot be easily removed and the fire is detected. The instrument cover can be attached and detached quickly and easily.

(2) The present invention is the fire detector cover according to (1), wherein the phosphorescent portion or the reflecting portion is detachably provided on the cover member.

According to the present invention, by providing a phosphorescent portion or a reflecting portion detachably from the cover member, it is possible to attach a phosphorescent portion or a reflecting portion having various shapes or change the position of the phosphorescent portion or the reflecting portion depending on the situation. can. The shape of the fire detector varies depending on the manufacturer, and the fire detector cover also deforms depending on the shape of the fire detector. In addition, monitoring passages that are one step higher than the roadway are provided on both sides of the tunnel on the roadway. A plurality of fire detectors installed in the tunnel are installed at regular intervals at a position such as a wall surface of the tunnel at a height of 1.5 m from the monitoring passage. Attach the fire detector cover to all of the affected fire detectors during construction inside the tunnel, and make sure that you have not forgotten to remove the fire detector cover when removing the fire detector cover after construction. do. Since the fire detector is installed on the side wall in the long tunnel, first of all, in order to confirm that the fire detector cover has been forgotten to be removed from the monitoring passage provided on the side wall side of the tunnel, the side direction of the fire detector It will be visible from. Also, when confirming that the fire detector cover attached to the fire detector has been forgotten to be removed, if a phosphorescent part or a reflective part is provided on the side surface, the fire detector cover at a distant position may be forgotten to be removed even if it is not close. Easy to check. However, the shape of the fire detector deforms the fire detector cover, and the shape of the phosphorescent part and the reflecting part and the mounting position of the phosphorescent part and the reflecting part on the cover member make it difficult to see the phosphorescent part and the reflecting part from the side surface direction. It may end up. In such a case, replace the phosphorescent part or reflecting part with a phosphorescent part or reflecting part that matches the shape of the fire detector so that it can be easily seen from the side, or change the mounting position of the phosphorescent part or reflecting part to the cover member. Therefore, it is possible to respond according to the shape of the fire detector. Also, since it is only necessary to replace the phosphorescent part or reflector with a shape that matches the shape of the fire detector, or change the position of the phosphorescent part or reflector, prepare several types of the entire fire detector cover according to the shape of the fire detector. There is no need, and it is possible to respond flexibly on site.

(3) Further, in the present invention, in a state where the fire detector is covered with the fire detector cover, the phosphorescent portion or the reflecting portion is at least on the left or right of the vertical center line of the fire detector. The fire detector cover according to (1) or (2), which is provided.

Most of the fire detectors that detect the flame of a fire in a general facility are symmetrically made around the vertical center line in the front, and along the vertical center line in the front to widen the detection range. The structure is such that the part is protruding. According to the present invention, when the fire detector is covered with the fire detector cover and the phosphorescent portion or the reflecting portion is provided on either the left or right side of the vertical center line of the fire detector, as described above. When confirming that the fire detector cover has been forgotten to be removed from the side surface of the fire detector on the monitoring passage, the phosphorescent part or the reflecting part comes into view. Therefore, it becomes easy to confirm that the fire detector cover has been forgotten to be removed, and it is possible to prevent the fire detector cover from being forgotten to be removed after construction.

(4) The fire detection according to any one of (1) to (3), wherein at least a part of the phosphorescent portion or the reflecting portion protrudes from the surface of the cover member. It is a vessel cover.

According to the present invention, since a part of the phosphorescent portion or the reflecting portion protrudes from the surface of the cover member, the phosphorescent portion or the reflecting portion can be visually recognized without being hidden by the shape of the fire detector. It is possible to prevent forgetting to remove the fire detector cover.

(5) Further, the present invention is described in any one of (1) to (4), wherein the phosphorescent portion or the reflecting portion has a cross-shaped or X-shaped shape in the surface direction of the cover member. Fire detector cover.

According to the present invention, since the shape of the phosphorescent portion or the reflecting portion is a cross shape or an X shape in the plane direction of the cover member, the phosphorescent portion or the reflecting portion is covered with the fire detector cover. A part of the reflective portion is arranged on the protruding vertical center line, and is also arranged on the left and right of the vertical center line. Therefore, when confirming that the fire detector cover has been forgotten to be removed from the side surface direction of the fire detector on the monitoring passage, the phosphorescent portion or the reflecting portion comes into view. Therefore, it becomes easy to confirm that the fire detector cover has been forgotten to be removed, and it is possible to prevent the fire detector cover from being forgotten to be removed after construction.

According to the present invention, when repair work or large-scale repair work in a facility is performed, the fire detector is covered with a fire detector cover provided with a cover member provided with a light-shielding portion for blocking infrared rays. It is possible to temporarily block infrared rays emitted from sparks such as gas burners and sanders used during construction to the fire detector so that sparks such as gas burners and sanders are not detected as fire flames. .. Therefore, it is possible to prevent the fire detector from detecting a spark or the like generated when performing construction in a facility such as a tunnel as a flame of a fire and issuing a false alarm. Further, by providing the phosphorescent portion or the reflecting portion on the cover member of the fire detector cover, it is possible to prevent forgetting to remove the fire detector cover after construction.

It is a front view of the state which the fire detector cover A1 in Example 1 of this invention is attached to the fire detector FD. It is a side view of the state which the fire detector cover A1 in Example 1 of this invention is attached to the fire detector FD. It is a front view of the state which the fire detector cover A2 in Example 2 of this invention is attached to the fire detector FD. It is a side view of the state which the fire detector cover A2 in Example 2 of this invention is attached to the fire detector FD. It is a bottom view of the state which the fire detector cover A2 in Example 2 of this invention is attached to the fire detector FD.

The present invention is a fire detector cover attached to a fire detector. Hereinafter, embodiments for carrying out the present invention will be described.

1 and 2 are a front view and a side view of a state in which the fire detector cover A1 according to the first embodiment of the present invention is attached to the fire detector FD. 1 is a sheet-shaped cover member constituting the fire detector cover A1 that covers the fire detector FD in order to temporarily block infrared rays emitted to the fire detector FD, and 1a is a surface or inner surface of the cover member 1. A light-shielding part that blocks infrared rays that have been treated with aluminum vapor deposition or the like on at least one of the entire surfaces, 21, 22, 23 is a phosphorescent part that has a fluorescent paint coated on the surface, and 3 is a reflection that has a prism or mirror-treated surface. Section 5 is a mouth rubber portion provided in the opening 4 of the cover member 1 as an attachment means for attaching the fire detector cover A1 to the fire detector FD, B is the vertical center line of the fire detector FD, and G is the vertical center line of the fire detector FD. It is a light receiving glass provided in the fire detector FD. A sensor or the like for detecting a fire is built in the light receiving glass G (not shown). In the fire detector FD, infrared rays generated from a flame at the time of a fire pass through the light receiving glass G, and a built-in sensor or the like detects the infrared rays and notifies the road administrator or the like of the fire signal. Further, a plurality of fire detector FDs are arranged at regular intervals (for example, at intervals of 25 m) at positions such as the wall surface of the tunnel at a height of 1.5 m from the monitoring passage provided on the side wall of the tunnel such as a roadway.

As shown in FIG. 1, when the fire detector cover A1 is attached to the fire detector FD and the fire detector FD is covered with the fire detector cover A1, the fire detector cover A1 is covered by the light shielding portion 1a. The fire detector FD is blocked from external infrared rays. Therefore, since infrared rays generated by sparks such as gas burners and sanders used during construction are blocked before passing through the light receiving glass G, the fire detector FD may notify the road administrator and the like of the fire signal. not.

The phosphorescent portion 21 has the shape of the characters "under inspection", the phosphorescent portions 22, 23 and the reflecting portion 3 are formed in the shape of a rectangular sheet, and are detachably provided on the outer surface of the cover member 1 with a hook-and-loop fastener. There is. Even if the fire detector cover A1 is forgotten to be removed after the construction, the phosphorescent units 21, 22 and 23 emit light by themselves and the reflecting unit 3 reflects the light, so that it is possible to prevent the fire detector cover A1 from being forgotten to be removed. can. Further, the phosphorescent portions 21, 22, 23 and the reflecting portion 3 are provided on the left and right of the vertical center line B of the fire detector FD with the fire detector cover A1 attached to the fire detector FD. Therefore, even if the fire detector cover A1 is projected and deformed by the fire detector FD as shown in FIG. 2, the phosphorescent portions 21 and 22 and the reflecting portion 3 can be visually recognized from the side surface direction of the fire detector FD. .. Therefore, when confirming that the fire detector cover A1 has been forgotten to be removed from the side surface of the fire detector FD on the monitoring passage, if the fire detector cover A1 is forgotten to be removed, the phosphorescent units 21 and 22 and the reflecting unit 3 will be used. You can prevent forgetting to take it by getting in sight. Further, since the phosphorescent portions 22 and 23 and the reflective portion 3 are detachably provided by the cover member 1 and the hook-and-loop fastener, the phosphorescent portion previously attached according to the shape of the fire detector FD when the fire detector cover A1 is attached. When it becomes difficult to confirm the 22 and 23 and the reflecting unit 3, it can be easily confirmed by changing the mounting positions of the phosphorescent units 22 and 23 and the reflecting unit 3. Further, since the mouth rubber portion 5 is provided in the opening 4 of the cover member 1, the fire detector cover A1 can be quickly and easily attached and detached only by expanding the mouth rubber portion 5.

3 to 5 are a front view, a side view, and a bottom view of a state in which the fire detector cover A2 according to the second embodiment of the present invention is attached to the fire detector FD. Reference numeral 11 is a sheet-shaped cover member constituting the fire detector cover A2 that covers the fire detector FD in order to temporarily block infrared rays radiated to the fire detector FD, and 11a is a surface or inner surface of the cover member 11. A light-shielding portion that blocks infrared rays that has been treated with aluminum vapor deposition or the like on at least one of the entire surfaces, and 24 is a phosphorescent portion having a cross-shaped shape with a fluorescent paint coated on the surface. The phosphorescent portion 24 is detachably provided on the outer surface of the cover member 11 by a hook-and-loop fastener. Reference numerals 6 and 7 are belts with a hook-and-loop fastener provided in the opening 41 of the cover member 11 as an attachment means for attaching the fire detector cover A2 to the fire detector FD. The front surface of the belt 6 is provided with a female portion 6a of the hook-and-loop fastener, and the back surface of the belt 7 is provided with a male portion 7a paired with the female portion of the hook-and-loop fastener of the belt 6. To attach the fire detector cover A2 to the fire detector FD, narrow the opening 41 of the cover member 11 with the belts 6 and 7, and fix the belts 6 and 7 to each other with the female portion 6a and the male portion 7a of the hook-and-loop fastener. It is done by. The configuration of the fire detector FD is the same as that shown in the first embodiment.

As shown in FIG. 3, since the phosphorescent unit 24 has a cross-shaped shape, the fire detector cover A
A part of the phosphorescent unit 24 is arranged on the vertical center line B in a state where 2 is attached to and covered with the fire detector FD, and is provided on the left and right sides of the vertical center line B of the fire detector FD. Is in a state of being. Therefore, even if the fire detector cover A2 is projected and deformed by the light receiving glass G of the fire detector FD as shown in FIG. 4, the phosphorescent portion 24 can be confirmed from the side surface direction of the fire detector FD. Therefore, when confirming that the fire detector cover A2 has been forgotten to be removed from the side surface of the fire detector FD on the monitoring passage, if the fire detector cover A2 is forgotten to be removed, the phosphorescent unit 24 can be removed by entering the field of view. You can prevent forgetting. Further, since the phosphorescent portion 24 is detachably provided on the cover member 11 by a hook-and-loop fastener, even when the phosphorescent portion 24 becomes difficult to check, it can be easily confirmed by changing the mounting position of the phosphorescent portion 24. Can be done. In this embodiment, the phosphorescent portion 24 has a cross-shaped shape, but a cross-shaped reflecting portion may be provided instead of the phosphorescent portion, and the phosphorescent portion 24 may have an X-shaped shape to have the same effect. The phosphorescent portion or the reflective portion may be detachably attached in the surface direction of the cover member. Further, since the belts 6 and 7 with the hook-and-loop fasteners are provided in the opening 41 of the cover member 11, the fire detector cover A2 can be attached and detached quickly and easily.

In the above embodiment, the light-shielding portions 1a and 11a are provided on the entire surfaces of the cover members 1 and 11 of the fire detector covers A1 and A2, but it is not always necessary to provide the light-shielding portions 1a and 11a on the entire surfaces of the cover members 1 and 11. In the case of the portion that detects infrared rays due to the flame, that is, in the configuration of the fire detector FD, it may be provided in at least a part of the portion that covers the light receiving glass G. Further, although the phosphorescent portions 21 to 24 and the reflecting portion 3 are provided in the surface direction of the cover member, the phosphorescent portion or the reflecting portion may have a three-dimensional shape protruding from the surface of the cover member. Further, one end of the phosphorescent portion or the reflecting portion may be a free end, and the other end may be attached to the cover member. As described above, the shape of the phosphorescent portion or the reflecting portion is not limited to the shape shown in the above embodiment. Regarding the method of attaching the phosphorescent part and the reflective part to the seat member, instead of using a hook-and-loop fastener, a transparent pocket for inserting the phosphorescent part or the reflective part is provided on the surface of the sheet member, and the phosphorescent part and the reflective part are detachably provided. Also, the present invention is not limited to the above embodiment. Further, as a means for attaching the fire detector cover, there is also a method of attaching to the fire detector by providing a magnet or a suction cup on the back surface of the cover member, in addition to the attachment method using a rubber mouth rubber or a belt with a hook-and-loop fastener. Therefore, the means for attaching the fire detector cover is not limited to the above embodiment.

FD fire detector, G light receiving glass, A1, A2 fire detector cover, B vertical center line, 1,11 cover member, 1a, 11a shading part, 21,22,23,24 phosphorescent part, 3 reflecting part, 4, 41 Opening part, 5 mouth rubber part, 6,7 belt, 6a female part, 7a male part

Claims (2)

A flame detector cover that covers the entire flame detector in order to temporarily block infrared rays emitted to the flame detectors arranged at regular intervals on the side wall of the tunnel .
Cover member and
A light-shielding portion provided on at least a part of the cover member to block infrared rays,
The flame detector is detachably provided on a part of the surface of the cover member so that it can be confirmed that the flame detector cover has been forgotten to be removed from the monitoring passage provided on the side wall side of the tunnel . Is covered by the flame detector cover, and the phosphorescent portion or the reflecting portion provided on the left and right sides of the vertical center line of the flame detector ,
A mounting means for mounting the cover member on the flame detector,
The flame detector cover is characterized by being equipped with. The flame detector cover according to claim 1, wherein at least a part of the phosphorescent portion or the reflecting portion protrudes from the surface of the cover member.

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