Flare

Abstract

To provide a fire pot which is less likely to roll.SOLUTION: A fire pot 1 comprises: a paper cylinder 2 having an ignitor 11 provided on one end; a bottom valve 4 to which the other end of the paper cylinder 2 is fitted; and a rolling suppression member 5 which suppresses rolling. The rolling suppression member 5 includes rectangular paper pieces 5a and 5b positioned across a folding line. An open part 21 is provided in the paper piece 5a. An open part 22 is provided in the paper piece 5b. The rolling suppression member 5 is folded along the folding line, and the bottom valve 4 is mounted to the bottom value 4 such that the bottom value 4 passes through the open part 21 and the open part 22.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a flare. [Background technology]

[0002] When flares are lit and dropped from a moving vehicle, flares that last for three minutes (3-minute flares), flares that last for five minutes (5-minute flares), etc. are used. For example, a worker in the passenger seat of a work vehicle traveling at a predetermined speed (e.g., 20 km / h) drops a flare toward a target location set for road traffic restrictions, construction work, etc. after passing the target location.

[0003] A common method of dropping flares towards a target location is the snap throw, in which the wrist is used to rotate the flare vertically (in a vertical plane) around its center of gravity.

[0004] In order to adequately prevent a dropped flare from rolling after landing, a flare has been proposed that has a roll-suppression member made of a square piece of paper with an opening that engages with a bottom plug connected to the flare body (for example, Patent Document 1).

[0005] By using a rolling suppression member made of square paper in this way, the impact can be sufficiently absorbed when the rolling suppression member hits the road surface, making it less likely for the flare to bounce back. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Utility Model Registration No. 3099131 Summary of the Invention [Problem to be solved by the invention]

[0007] When a flare is lit and dropped from a moving vehicle, it is desirable to shorten the rolling time, which corresponds to the time required for the flare to roll to a stop after landing, and the rolling distance, which corresponds to the shortest distance from the point where the flare lands to the point where it rolls to a stop.

[0008] An object of the present invention is to provide a flare that is less likely to roll. [Means for solving the problem]

[0009] The flare according to the present invention comprises a tubular member having an ignition charge at one end and filled with an ignition charge that ignites a flame when the ignition charge is ignited; a bottom plug into which the other end of the tubular member is fitted; and a rolling suppression member for suppressing rolling, wherein the rolling suppression member has a first thin plate material and a second thin plate material of rectangular shape arranged on either side of a first fold line, the first thin plate material and the second thin plate material having a first opening and a second opening, respectively, and the rolling suppression member is folded along the first fold line and attached to the bottom plug so that the bottom plug passes through the first opening and the second opening.

[0010] Preferably, the anti-rolling member is attached to the bottom plug so that the first thin plate material and the second thin plate material form a substantially V-shape when viewed from a plane perpendicular to the first fold line.

[0011] Preferably, the bottom plug has an annular groove on its outer periphery for engaging one of the first opening and the second opening.

[0012] Preferably, the anti-rolling member has a rectangular third thin plate material arranged between the first or second thin plate material and the second fold line, the third thin plate material having a third opening for the bottom plug to pass through, and the anti-rolling member is folded along the second fold line and attached to the bottom plug so that the first, second and third thin plate materials form an approximately Z-shape when viewed from a plane perpendicular to the first and second fold lines. [Effects of the Invention]

[0013] According to the present invention, a flare can be provided that can shorten the rolling time and rolling distance. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a side view of a flare according to a first embodiment of the present invention. [Figure 2] 2 is a view of the flare of FIG. 1 rotated 90° counterclockwise about the longitudinal axis of the flare. [Figure 3] 2 is a view of the flare of FIG. 1 rotated 90° clockwise about the longitudinal axis of the flare. [Figure 4] FIG. 2 is a top view of the flare of FIG. 1. [Figure 5] FIG. 2 is a bottom view of the flare of FIG. 1. [Figure 6] FIG. 2 is a partial cross-sectional view of the bottom plug of FIG. [Figure 7] FIG. 2 is a development view of the rolling suppression member of FIG. [Figure 8] 2 is a diagram for explaining the throwing of the flare of FIG. 1 by a snap throw. FIG. [Figure 9] FIG. 4 is a side view of a flare according to a second embodiment of the present invention. [Figure 10] 10 is a view of the flare of FIG. 9 rotated 90° counterclockwise about the longitudinal axis of the flare. [Figure 11] 10 is a view of the flare of FIG. 9 rotated 90° clockwise about the longitudinal axis of the flare. [Figure 12] FIG. 10 is a top view of the flare of FIG. 9. [Figure 13] FIG. 10 is a bottom view of the flare of FIG. 9. [Figure 14] FIG. 10 is a partial cross-sectional view of the bottom plug of FIG. 9. [Figure 15] FIG. 10 is a development view of the rolling suppression member of FIG. 9. [Figure 16] FIG. 1 is a perspective view of a drop test machine used in a flare drop test. [Figure 17]FIG. 17 is a schematic plan view of a test site where a drop test was conducted using the drop test machine of FIG. 16. [Figure 18] FIG. 17 is a schematic side view of a test site where a drop test was conducted using the drop test machine of FIG. 16. [Figure 19] 17 is a diagram showing the average values ​​of the rolling distance and the average values ​​of the rolling time of the flares obtained by the drop test using the drop tester of FIG. 16, for each shape of the rolling-suppressing member. DETAILED DESCRIPTION OF THE INVENTION

[0015] The present invention will be described with reference to the drawings. However, it should be noted that the technical scope of the present invention is not limited to the embodiments, but extends to the inventions described in the claims and their equivalents. For clarity, in some of the drawings, parts that cannot be seen are shown with dashed lines.

[0016] Fig. 1 is a side view of a flare according to a first embodiment of the present invention, Fig. 2 is a view of the flare of Fig. 1 rotated 90° counterclockwise around the longitudinal axis of the flare, Fig. 3 is a view of the flare of Fig. 1 rotated 90° clockwise around the longitudinal axis of the flare, Fig. 4 is a top view of the flare of Fig. 1, and Fig. 5 is a bottom view of the flare of Fig. 1.

[0017] Flare 1 shown in Figures 1 to 5 is a five-minute flare that is lit when in use and dropped from a moving vehicle. Flare 1 comprises a paper tube 2, a cap 3, a bottom plug 4, a roll-inhibiting member 5, and a label 6. Paper tube 2 is made of kraft paper. As shown in Figures 1 to 3, an ignition charge 11 is provided at one end of paper tube 2.

[0018] The inside of the paper tube 2 is filled with an ignition charge (not shown) that causes a flame when ignited by the ignition charge 11, and an enhancer charge (not shown) that reliably ignites the ignition charge from the ignition charge 11. The paper tube 2 is an example of a cylindrical member.

[0019] 1 to 3, cap 3 has a cylindrical portion 3a with an inner diameter substantially the same as the outer diameter of paper tube 2 and a circular flat portion 3b located at one end of cylindrical portion 3a, and is detachably attached to one end of paper tube 2 to cover ignition charge 11 until ignition of flare 1. Cap 3 is made of, for example, a polyethylene sheet.

[0020] As shown in Figures 1 to 3, a side charge 12 that ignites the ignition charge 11 through frictional contact is provided on the side exposed to the outside of the circular flat portion 3b of the cap 3, and the cap 3 is removed from one end of the paper tube 2 when the flare 1 is ignited.

[0021] The bottom plug 4 has a generally cylindrical shape with an inner diameter that is roughly the same as the outer diameter of the paper tube 2, and is fitted and fixed to the other end of the paper tube 2. The bottom plug 4 is made of kraft paper. In this embodiment, the other end of the paper tube 2 is fitted into the upper half of the bottom plug 4.

[0022] Figure 6 is a partial cross-sectional view of the bottom plug of Figure 1. As shown in Figures 1 to 3 and 6, an annular groove 13 is provided on the outer periphery of the bottom plug 4 at approximately the middle part in the longitudinal direction. The annular groove 13 is formed by, for example, drawing.

[0023] As shown in Figures 1 to 3, the roll-suppressing member 5 is attached to the bottom plug 4 to prevent the dropped flare 1 from rolling after landing. Figure 7 is a development view of the roll-suppressing member of Figure 1. The roll-suppressing member 5 has square pieces of paper 5a and 5b arranged on either side of a fold line 20. The fold line 20 is an example of a first fold line. The square is an example of a rectangular shape.

[0024] The pieces of paper 5a and 5b have the same shape, and the sides of the pieces of paper 5a and 5b are approximately twice the outer diameter of the bottom plug 4. The pieces of paper 5a and 5b are made of cardboard. One of the pieces of paper 5a and 5b is an example of a first thin plate-like material. The other of the pieces of paper 5a and 5b is an example of a second thin plate-like material.

[0025] An opening 21 is provided in the approximate center of paper piece 5a. Opening 21 engages with annular groove 13 of bottom plug 4. An opening 22 is provided in the approximate center of paper piece 5b. Opening 22 has a circular shape with a diameter larger than the outer diameter of bottom plug 4 so that bottom plug 4 can be inserted, and is located between opening 21 and cap 3 as shown in FIGS. 1 to 3.

[0026] The rolling-suppression member 5 attached to the bottom plug 4 is rotatable along the annular groove portion 13 around the longitudinal axis of the bottom plug 4. One of the openings 21 and 22 is an example of a first opening. The other of the openings 21 and 22 is an example of a second opening.

[0027] As shown in Fig. 1, anti-rolling member 5 is folded along crease line 20 and attached to bottom plug 4 so as to pass through openings 21 and 22. Also, as shown in Fig. 1, anti-rolling member 5 is attached to bottom plug 4 so that paper pieces 5a and 5b form a substantially V-shape when viewed from a plane perpendicular to crease line 20. The yz plane of the three-dimensional coordinate system in Figs. 1 to 7 is an example of a plane substantially perpendicular to the first crease line.

[0028] By engaging the opening 21 with the annular groove portion 13 of the bottom plug 4, the rolling prevention member 5 can be easily and securely attached to the bottom plug 4 while maintaining the shape formed by the paper pieces 5a and 5b in an approximately V-shape when viewed from the yz plane of the three-dimensional coordinate system of Figures 1 to 7.

[0029] Furthermore, since opening 22 is positioned between opening 21 and cap 3, bottom plug 4 can effectively absorb the impact when it hits the road surface when dropped flare 1 lands.

[0030] In the first embodiment described above, the rolling suppression member 5 can be further folded along the fold line 20 so that the shape formed by the paper pieces 5a and 5b becomes approximately I-shaped when viewed from the yz plane of the three-dimensional coordinate system of Figures 1 to 7.

[0031] Since the flare 1 can be dropped by a snap throw or the like with the shape formed by the paper pieces 5a and 5b being roughly I-shaped, adverse effects are less likely to occur when the flare 1 is dropped.

[0032] In the first embodiment, slits 23 are provided on both sides of crease line 20 to reduce the force required to fold along crease line 20 .

[0033] Therefore, by folding along crease line 20, the force required to make the long side of the rectangle into a substantially V-shape or a substantially I-shape when viewed from the yz plane of the three-dimensional coordinate system of FIGS. 1 to 7 can be reduced.

[0034] The label 6 lists precautions to take when using the flare 1, and is attached to the outer periphery of the paper tube 2 so that it is visible from the outside.

[0035] In the first embodiment, the length of the flare 1 in the z-axis direction in the three-dimensional coordinate system of Figures 1 to 7 is 156 mm. Also, in the first embodiment, the outer diameter of the cap 3 is 25 mm.

[0036] In the first embodiment, the outer diameter of the bottom plug 4 is 23.7 mm. In the first embodiment, the outer diameter of the paper tube 2, the inner diameter of the cap 3, and the inner diameter of the bottom plug 4 are 22.4 mm. In the first embodiment, the inner diameter of the paper tube 2 is 21.4 mm.

[0037] In the first embodiment, each of the sides of the piece of paper 5a and the piece of paper 5b is 40 mm. In the first embodiment, the diameter of the opening 21 is 25 mm. In the first embodiment, the diameter of the opening 22 is 30 mm.

[0038] In the first embodiment, the length of the slit 23 is 5 mm. Furthermore, in the first embodiment, the angle α (FIG. 1) formed by the paper pieces 5a and 5b is 20°. Therefore, the flare 1 with the roll-restriction member 5 is compact and not bulky for easy transportation or storage. Furthermore, the flare 1 with the roll-restriction member 5 has a shape that does not interfere with throwing by a snap throw or the like.

[0039] According to the first embodiment, multiple flares 1 can be packed so that the longitudinal axis of the flares 1 is perpendicular to the xy plane of the three-dimensional coordinate system shown in Figures 1 to 7. Therefore, delivery and storage of multiple flares 1 are less likely to be adversely affected.

[0040] Furthermore, according to the first embodiment, relatively inexpensive cardboard can be selected as the paper used for the paper pieces 5a and 5b, and the rolling-suppression member 5 can be constructed by simply processing a single rectangular piece of paper. Therefore, the manufacturing cost of the flare 1 does not increase significantly.

[0041] Figure 8 is a diagram for explaining the snap throw of the flare of Figure 1. Here, we will explain the case where worker P in the passenger seat of the work vehicle V throws flare 1 toward the target drop position (not shown) located on the left side of the work vehicle V immediately after the work vehicle V passes the target drop position.

[0042] When the work vehicle V traveling on a road (e.g., a highway) at a predetermined speed (e.g., 20 km / h) arrives at a position where the worker P can see the target drop position (e.g., a position where the distance between the work vehicle V and the target drop position is 10 m), the worker P removes the cap 3 of the flare 1. Then, the worker P ignites the ignition charge 11 of the flare 1 by frictional contact with the side charge 12 of the cap 3.

[0043] Then, as shown in Figure 8(a), worker P holds the ignition charge 11 of the lit flare 1 facing in the direction of travel of the work vehicle V. At this time, as shown in Figure 8(b), worker P grasps the bottom plug 4 of the flare 1 with the middle finger, ring finger, and little finger of his left hand, and pinches the roll-suppressing member 5 of the flare 1 between the index finger and middle finger of his left hand, so that the shape formed by the paper pieces 5a and 5b of the roll-suppressing member 5 of the flare 1 is approximately I-shaped. Then, worker P places the thumb of his left hand on the label 6 of the flare 1.

[0044] Immediately after the traveling work vehicle V passes the target drop position, as shown in Figure 8(c), worker P moves his left arm in the direction of arrow A and extends it downward. Next, as shown in Figure 8(d), worker P moves his left arm in the direction of arrow B. Then, as shown in Figure 8(e), worker P raises the part of his left arm below the elbow slightly forward.

[0045] Next, as shown in Fig. 8(f), the worker P returns his left arm to the position shown in Fig. 8(c). Then, as shown in Fig. 8(g), the worker P drops the flare 1 at the target drop position on the left rear side of the moving work vehicle V due to the reaction force generated when the worker P returns his left arm to the position shown in Fig. 8(c).

[0046] At this time, as shown in Figure 8(h), when the part of the left arm below the elbow is approximately perpendicular to the road surface, worker P rotates the flare 1 vertically around the center of gravity of the flare 1 by turning his wrist as shown by arrow C.

[0047] As described above, worker P can perform a snap throw of the flare 1 while pinching the roll-suppressing member 5 of the flare 1 between the index finger and middle finger of his left hand, following the procedure explained with reference to Figures 8(a) to 8(h). Therefore, adverse effects are less likely to occur when worker P snap throws the flare 1.

[0048] Fig. 9 is a side view of a second embodiment of the present invention, Fig. 10 is a view of the flare of Fig. 9 rotated 90° counterclockwise around the longitudinal axis of the flare, Fig. 11 is a view of the flare of Fig. 9 rotated 90° clockwise around the longitudinal axis of the flare, Fig. 12 is a top view of the flare of Fig. 9, and Fig. 13 is a bottom view of the flare of Fig. 9.

[0049] The flare 1' shown in Figures 9 to 13 comprises a paper tube 2, a cap 3, a bottom plug 4', a rolling-inhibiting member 5', and a label 6. Figure 14 is a partial cross-sectional view of the bottom plug of Figure 9. As shown in Figures 9 to 11 and Figure 45, the bottom plug 4' has the same configuration as the bottom plug 4 shown in Figures 1 to 4 and 6, except that an annular groove 13' is provided on the outer periphery in addition to the annular groove 13. The annular groove 13' is formed, for example, by drawing.

[0050] As shown in Figures 9 to 13, the roll-suppressing member 5' is attached to the bottom plug 4' to prevent the dropped flare 1' from rolling after it lands. Figure 15 is an exploded view of the roll-suppressing member of Figure 9. The roll-suppressing member 5' has square pieces of paper 5a' and 5b' arranged on either side of a fold line 20', and a square piece of paper 5c' arranged on either side of the fold line 20" from piece 5b'. The fold line 20' is an example of a first fold line. The fold line 20" is an example of a second fold line. The square is an example of a rectangular shape.

[0051] The pieces of paper 5a', 5b', and 5c' have the same shape, and the sides of the pieces of paper 5a', 5b', and 5c' are approximately twice the outer diameter of the bottom plug 4. The pieces of paper 5a', 5b', and 5c' are made of cardboard.

[0052] One of the pieces of paper 5a' and 5b' is an example of a first thin plate-like material. The other of the pieces of paper 5a' and 5b' is an example of a second thin plate-like material. The piece of paper 5c' is an example of a third thin plate-like material.

[0053] An opening 21' is provided in approximately the center of the paper piece 5a'. The opening 21' engages with the annular groove 13' of the bottom plug 4'. An opening 22' is provided in approximately the center of the paper piece 5b'. The opening 22' has a circular shape with a diameter larger than the outer diameter of the bottom plug 4' so that the bottom plug 4' can be inserted therein. An opening 21'' is provided in approximately the center of the paper piece 5c'. The opening 21'' engages with the annular groove 13' of the bottom plug 4'.

[0054] One of opening 21' and opening 22' is an example of a first opening. The other of opening 21' and opening 22' is an example of a second opening. Opening 21'' is an example of a third opening.

[0055] As shown in FIG. 9, the rolling suppression member 5' is folded along the fold line 20' and the fold line 20'', and attached to the bottom plug 4' so as to pass through the opening 21', the opening 22' and the opening 21''.

[0056] Also, as shown in Figure 9, the rolling prevention member 5' is attached to the bottom plug 4' so that the paper pieces 5a', 5b', and 5c' form an approximately Z-shape when viewed from a plane perpendicular to the fold line 20' and fold line 20". The yz plane of the three-dimensional coordinate system in Figures 9 to 15 is an example of a plane approximately perpendicular to the first fold line and the second fold line.

[0057] By engaging the openings 21' and 21'' with the annular groove portion 13 and the annular groove portion 13' of the bottom plug 4', respectively, the anti-rolling member 5' can be easily and securely attached to the bottom plug 4' while maintaining the shape formed by the paper pieces 5a', 5b', and 5c' in an approximately Z-shape when viewed from the yz plane of the three-dimensional coordinate system of Figures 9 to 15.The anti-rolling member 5' attached to the bottom plug 4' can then freely rotate along the annular groove portion 13 and the annular groove portion 13' around the longitudinal axis of the bottom plug 4'.

[0058] In the second embodiment, slits 23' are provided on both sides of crease line 20' to reduce the force required to fold along crease line 20'. Also, in the second embodiment, slits 23" are provided on both sides of crease line 20" to reduce the force required to fold along crease line 20".

[0059] Therefore, by folding along crease line 20' and crease line 20'', the force required to make the shape formed by pieces of paper 5a', 5b', and 5c' into an approximately Z-shape when viewed from the yz plane of the three-dimensional coordinate system of Figures 9 to 15 can be reduced.

[0060] In the second embodiment, the sides of the pieces of paper 5a', 5b', and 5c' are each 40 mm. Also, in the second embodiment, the diameters of the openings 21' and 21" are each 25 mm. Also, in the second embodiment, the diameter of the opening 22' is 30 mm.

[0061] In addition, in the second embodiment, the length of slit 23' and slit 23" is 5 mm each. Furthermore, in the second embodiment, the angle β (Figure 10) formed between piece of paper 5b' and piece of paper 5a' or piece of paper 5c' is 20°. Therefore, flare 1' with roll-suppressing member 5' is compact in size so that it is not bulky and does not cause problems when transporting or storing. In addition, flare 1' with roll-suppressing member 5' has a shape that does not cause problems when dropped by snap throw, etc.

[0062] According to the second embodiment, multiple flares 1' can be packed so that the longitudinal axis of each flares 1' is perpendicular to the xy plane of the three-dimensional coordinate system shown in Figures 9 to 15. Therefore, delivery and storage of multiple flares 1 are less likely to be adversely affected.

[0063] Furthermore, according to the second embodiment, a relatively inexpensive paper (such as cardboard) can be selected as the paper for making the pieces of paper 5a', 5b', and 5c', and the rolling-suppression member 5' can be made by simply processing a rectangular piece of paper. Therefore, the manufacturing cost of the flare 1' does not increase significantly.

[0064] When dropping the flare 1' by snap throw, the worker grasps the bottom plug 4' of the flare 1' with the middle finger, ring finger, and little finger of the left hand, and places the thumb and index finger of the left hand on the label 6 of the flare 1'.

[0065] Next, a flare dropping test will be described, which was conducted to verify the rolling suppression effect of the flare 1 of the first embodiment and the flare 1' of the second embodiment in comparison with a conventional flare. When a flare dropping test is conducted by dropping a flare from a vehicle, there is a risk that the test conditions will vary greatly depending on the vehicle speed, the flare dropping method, etc.

[0066] In order to minimize the variation in the test conditions for the drop test, the drop test was conducted using a drop test machine created to reproduce the vertical rotation of the flare around its center of gravity caused by the above-mentioned snap throw by the worker.

[0067] Figure 16 is an oblique view of the drop test machine used in the flare drop test, Figure 17 is a schematic plan view of the test site where the drop test was conducted using the drop test machine of Figure 16, and Figure 18 is a schematic side view of the test site where the drop test was conducted using the drop test machine of Figure 16.

[0068] 16, the drop test machine 31 includes a base 32, a rotation shaft 33, a mounting base 34, and a rod-shaped member 35. The rotation shaft 33 is provided on the base 32. A flare is placed on the mounting base 34.

[0069] One end of the rod-shaped member 35 is attached to the rotation axis 33 so as to be rotatable around the rotation axis 33 within an angular range restricted by the base 32, and the other end of the rod-shaped member 35 is attached to the mounting table 34. Therefore, the mounting table 34 can move along an arc trajectory with a radius substantially equal to the length of the rod-shaped member 35.

[0070] When dropping a flare 1 from the drop test machine 31, the person conducting the drop test first moves the platform 34 on which the flare 1 with the cap 3 removed is placed along an arc trajectory, and places it at the highest point that the platform 34 can reach, as shown by the dashed line.

[0071] Thereafter, the person conducting the drop test releases his / her hands from the platform 34, causing the platform 34 to reach its lowest possible point, as indicated by the dashed-dotted line. Then, the centrifugal force causes the flare 1 to be thrown in the direction of arrow a, causing the flare 1 to rotate vertically (in a vertical plane) around its center of gravity. Therefore, the drop of the flare from the drop test machine 31 corresponds to the drop of a flare by the snap throw described above.

[0072] The drop test machine 31 was placed on a workbench 41 (Fig. 18) placed on the ground. Since the height of the smoke canister from the ground when dropped by the worker is 1.4m to 1.5m, the distance from the ground to the lowest point that the mounting platform 34 can reach was adjusted to be 1.4m to 1.5m.

[0073] In addition, the distance over which the drop test machine 31 dropped the smoke bomb was 0.9 m (measured value), the initial speed of the flare dropped by the drop test machine 31 was 7.3 km / h (calculated value), and the horizontal speed of the flare when it landed was 5.9 km / h (calculated value).

[0074] In the test site shown in Figures 17 and 18, O (Figure 18) was set as the origin of the reference coordinate system (0,0), the directions of the arrows on the x and y axes shown in Figure 17 were set as positive, and coordinates were set in centimeters. In addition, the coordinates of the target position b (Figure 18) for dropping the smoke bomb by the drop test machine 31 were set to (20,50).

[0075] 17 and 18, in order to capture a panoramic view of the testing site, camera 42 for checking the overall situation was placed in a position where it could capture a panoramic view of the testing site. Furthermore, in order to capture super slow motion videos at the testing site shown in Fig. 17 and 18, behavior analysis cameras 43 and 44 were placed so that the height of the central axis of the lens was 35 cm.

[0076] A JVC EverioR GZ-RX670 with a picture quality of 1920 x 1080 / 60fps (60p 60i) was used as the overall situation confirmation camera 42. A SONY Action Cam FDR-X3000R with a picture quality of 1280 x 720 / 240fps was used as the behavior analysis camera 43 and behavior analysis camera 44.

[0077] In the dropping test, ten conventional flares, ten flares 1 of the first embodiment, and three flares 1' of the second embodiment were dropped by a drop tester 31. The conventional flares used had the same configuration as the flares 1 of the first embodiment except that they had a rolling suppression member made of square paper instead of the rolling suppression member 5.

[0078] The coordinates of the landing points of one end of each of the ten conventional flares, the ten flares 1 of the first embodiment, and the three flares 1' of the second embodiment were determined by analyzing slow-motion video footage taken by behavior analysis cameras 43 and 44.

[0079] In addition, the coordinates of the rolling stop points of the ten conventional flares, the ten flares 1 of the first embodiment, and the three flares 1' of the second embodiment were determined to be the coordinates of the point on the label attached to each flare that was farthest from the ground.

[0080] In addition, the rolling time of each of the ten conventional flares, the ten flares 1 of the first embodiment, and the three flares 1' of the second embodiment was measured using slow motion video taken by behavior analysis cameras 43 and 44.

[0081] Furthermore, the rolling distance of each of the ten conventional flares, the ten flares 1 of the first embodiment, and the three flares 1' of the second embodiment was determined to be the shortest distance from the coordinates of the landing point of each flare to the coordinates of the rolling stop point.

[0082] FIG. 19 is a diagram showing the average rolling distances and average rolling times of flares obtained by a drop test using the drop tester of FIG. 18, for each shape of the rolling-suppressing member. In FIG. 19, triangles represent the average rolling distances and average rolling times of the conventional flares. Also, in FIG. 19, diamonds represent the average rolling distances and average rolling times of the flares 1 of the first embodiment. Furthermore, in FIG. 19, squares represent the average rolling distances and average rolling times of the flares 1' of the second embodiment.

[0083] As shown in Figure 19, the rolling time of the flare 1 of the first embodiment was reduced by 14% compared to the conventional flare, and the rolling distance of the flare 1 of the first embodiment was reduced by 30% compared to the conventional flare.

[0084] Furthermore, as shown in FIG. 19, the rolling time of the flare 1' of the second embodiment is reduced by 60% compared to the conventional flare, and the rolling distance of the flare 1' of the second embodiment is reduced by 34% compared to the conventional flare.

[0085] As described above, the flares 1 of the first embodiment and 1' of the second embodiment were able to shorten both the rolling time and the rolling distance compared to the conventional flares. That is, the flares according to the present invention, which are folded along the fold lines and have a rolling suppression member attached to the bottom plug so as to penetrate two or more openings, were able to shorten both the rolling time and the rolling distance compared to the conventional flares. Therefore, it has been shown that the flares according to the present invention, such as the flares 1 of the first embodiment and 1' of the second embodiment, have a rolling suppression effect compared to the conventional flares, and a flares that is less likely to roll can be constructed according to the present invention.

[0086] The present invention is not limited to the first embodiment or the second embodiment, and many modifications and variations are possible. For example, the flares 1 of the first embodiment and 1' of the second embodiment may be flares other than 5-minute flares, for example, 3-minute flares. The flares 1 of the first embodiment and 1' of the second embodiment may be dropped by methods other than snap throw. The flares 1 of the first embodiment and 1' of the second embodiment may also be used in cases other than igniting the flares and dropping them from a moving vehicle.

[0087] In the first and second embodiments, the paper tube 2 and the bottom plug 4 may be made of paper other than kraft paper. In the first embodiment of the flare 1 and the second embodiment, the paper tube 2 may be another type of paper tube, for example, a type that does not use a transfer charge.

[0088] In the first and second embodiments, the cap 3 may be made of a thermoplastic resin other than a polyethylene sheet. In the first embodiment, the annular groove 13 of the bottom plug 4 may be omitted, and in the second embodiment, the annular groove 13 and the annular groove 13' of the bottom plug 4' may be omitted.

[0089] Furthermore, in the first embodiment, the pieces of paper 5a and 5b may be made of paper other than cardboard, and in the second embodiment, the pieces of paper 5a', 5b' and 5c' may be made of paper other than cardboard.

[0090] In addition, in the first embodiment, the pieces of paper 5a and 5b may be made of a rectangular, thin plate-like material other than paper, and in the second embodiment, the pieces of paper 5a', 5b' and 5c' may be made of a rectangular, thin plate-like material other than paper.

[0091] As the rectangular thin plate material, a resin sheet, an iron plate, or the like can be used, and as the resin sheet, for example, a polyethylene or propylene sheet having high elasticity can be used.

[0092] When the rolling suppression member is made of one rectangular thin plate material, the axial and transverse center of gravity positions of the flare are approximately symmetrical from the time it lands to the time it stops, etc. In contrast, when the rolling suppression member is made of two or three rectangular thin plate material pieces (fragments) arranged on either side of a fold line, the axial and transverse center of gravity positions of the flare are asymmetrical from the time it lands to the time it stops, etc.

[0093] For this reason, when a rolling suppression member is made up of two or three rectangular thin plates arranged on either side of a fold line, the rolling speed of the flare from the time it lands to the time it stops is lower than when the rolling suppression member is made up of a single rectangular thin plate. Therefore, even if a highly elastic material is used as the thin plate, rolling can be sufficiently suppressed.

[0094] In the first embodiment, the rolling suppression member 5 may be attached to the bottom plug 4 so that the opening 22 is located between the cap 3 and the opening 21 .

[0095] In the first embodiment, the length of the flare 1 in the z-axis direction in the three-dimensional coordinate system of Figures 1 to 8 may be 153 mm to 159 mm. In the first embodiment, the outer diameter of the cap 3 may be 23 mm to 27 mm.

[0096] In the first embodiment, the outer diameter of bottom plug 4 may be 21.7 mm to 25.7 mm. In the first embodiment, the outer diameter of cardboard tube 2, the inner diameter of cap 3, and the inner diameter of bottom plug 4 may be 20.4 mm to 22.4 mm. In the first embodiment, the inner diameter of cardboard tube 2 may be 19.4 mm to 23.4 mm.

[0097] In the first embodiment, the sides of the piece of paper 5a and the sides of the piece of paper 5b may be 35 mm to 55 mm and 70 mm to 110 mm, respectively. In the first embodiment, the diameter of the opening 21 may be 20 mm to 30 mm. In the first embodiment, the diameter of the opening 22 may be 25 mm to 40 mm.

[0098] In the first embodiment, the length of the slit 23 may be 3 mm to 7 mm. In the first embodiment, the angle α (FIG. 1) formed by the paper pieces 5a and 5b may be 10° to 45° to suppress the rolling of the flare 1 and to prevent adverse effects when the flare 1 is dropped.

[0099] In the second embodiment, the sides of the piece of paper 5a', the side of the piece of paper 5b', and the side of the piece of paper 5c' may be 35 mm to 55 mm and 105 mm to 165 mm, respectively. In the second embodiment, the diameter of the opening 21' and the diameter of the opening 21'' may be 20 mm to 30 mm, respectively. In the second embodiment, the diameter of the opening 22' may be 25 mm to 40 mm.

[0100] In addition, in the second embodiment, the lengths of the slits 23' and 23" may each be 3 mm to 7 mm. In addition, in the second embodiment, the angle β (Figure 9) formed between the piece of paper 5b' and the piece of paper 5a' or 5c' may be 10° to 45° to suppress the rolling of the flare 1' and to reduce the risk of adverse effects when the flare 1' is dropped.

[0101] Furthermore, in the second embodiment described above, opening 21'' may have the same configuration as opening 22'. In this case, rolling suppression member 5' can be further folded along fold line 20' and fold line 20'' so that the shape formed by paper pieces 5a', 5b', and 5c' becomes approximately I-shaped when viewed from a plane approximately perpendicular to fold line 20' and fold line 20''.

[0102] This allows the flare 1' to be dropped by a snap throw or the like while the shape formed by the pieces of paper 5a', 5b' and 5c' is roughly I-shaped, making it even less likely that adverse effects will occur when the flare 1' is dropped. [Explanation of symbols]

[0103] 1.1' Flare 2 paper tube 3 Cap 3a Cylindrical part 3b Circular flat part 4,4' bottom plug 5,5' Rolling restraint member 5a,5a',5b,5b',5c' piece of paper 6 Labels 11 Ignition Powder 12 Side medication 13,13' Annular groove 20,20',20" crease line 21, 21', 21", 22, 22' opening 23, 23', 23" cutout 31 Drop Test Machine 32 Foundation 33 Rotation axis 34 Mounting table 35 Rod-shaped member 41 Workbench 42 Overall situation monitoring camera 43,44 Behavioral analysis cameras

Claims

1. a cylindrical member having an ignition charge provided at one end and filled with an ignition charge that generates a flame when ignited by the ignition charge; a bottom plug into which the other end of the cylindrical member is fitted; a rolling suppression member for suppressing rolling, The rolling suppression member includes a first thin plate-like material and a second thin plate-like material, each of which has a rectangular shape and is arranged on either side of a first fold line, the first thin plate-shaped material and the second thin plate-shaped material are provided with a first opening and a second opening, respectively; one of the first opening and the second opening is engaged with the bottom plug, and the other of the first opening and the second opening has a circular shape with a diameter larger than an outer diameter of the bottom plug so that the bottom plug can be inserted therein; the rolling suppression member is folded along the first fold line and attached to the bottom plug so that the first thin plate-shaped material and the second thin plate-shaped material form a substantially V-shape when viewed from a plane perpendicular to the first fold line; A flare characterized in that the rolling suppression member can be further folded along the first fold line so that the first thin plate material and the second thin plate material change from an approximately V-shape to an approximately I-shape when viewed from a plane perpendicular to the first fold line.

2. 2. The flare of claim 1, wherein the bottom plug has an annular groove formed on its outer periphery for engaging one of the first opening and the second opening.

3. A cylindrical member having an ignition charge provided at one end and an ignition charge filled inside to cause a flame when the ignition charge is ignited; a bottom plug into which the other end of the cylindrical member is fitted; a rolling suppression member for suppressing rolling, The rolling suppression member includes a first thin plate-like material and a second thin plate-like material, each of which has a rectangular shape and is arranged on either side of a first fold line, the first thin plate-shaped material and the second thin plate-shaped material are provided with a first opening and a second opening, respectively; The rolling suppression member further includes a third thin plate-shaped material having a rectangular shape and arranged on either side of the first thin plate-shaped material or the second thin plate-shaped material across a second fold line, the third thin plate-shaped material is provided with a third opening; one of the first opening and the second opening is engaged with the bottom plug, and the other of the first opening and the second opening and the third opening have a circular shape with a diameter larger than an outer diameter of the bottom plug so that the bottom plug can be inserted; the rolling suppression member is folded along the first fold line and the second fold line, and is attached to the bottom plug so that the first thin plate-shaped material, the second thin plate-shaped material, and the third thin plate-shaped material form a substantially Z-shape when viewed from a plane perpendicular to the first fold line and the second fold line; The rolling suppression member can be further folded along the first fold line and the second fold line so that the first thin plate material, the second thin plate material, and the third thin plate material change from an approximately Z-shape to an approximately I-shape when viewed from a plane perpendicular to the first fold line and the second fold line.

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