Megaphone for fire extinguishing sticks
The integration of a megaphone with a fire extinguishing stick addresses the challenges of compact storage and ease of use, enabling rapid fire suppression and rescue calls by allowing separate handling, thus enhancing emergency response efficiency.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- WHITE HOUSE CO LTD
- Filing Date
- 2024-10-30
- Publication Date
- 2026-05-15
AI Technical Summary
Conventional fire extinguishers and megaphones are not compact enough for easy storage and retrieval during emergencies, leading to delays in fire extinguishing and rescue requests, and they pose operational challenges due to their size and weight, making them difficult to use effectively in confined spaces or high places.
A megaphone integrated with a fire extinguishing stick, where the megaphone is detachably attached to the stick, allowing for simultaneous use of both tools by different individuals, with the stick being lightweight and capable of continuous inert gas spraying, and the megaphone being designed for easy handling and compact storage.
Enables rapid and effective initial fire suppression and rescue calls by allowing separate handling of the megaphone and fire extinguishing stick, ensuring quick response and compact storage, with the megaphone being designed for easy handling and compact storage, and the stick being lightweight and capable of continuous inert gas spraying.
Smart Images
Figure 2026079363000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a megaphone used in a fire stick.
Background Art
[0002] Conventionally, a device related to the loading of rescue supplies used in disasters is known.
[0003] For example, Patent Document 1 describes loading rescue supplies such as a fire extinguisher and a megaphone on a motorcycle or a three-wheeled vehicle used as a means of movement during a disaster.
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0005] The fire extinguisher described in Patent Document 1 is a conventional general fire extinguisher that sprays a powder fire extinguishing agent by gripping a lever. In addition, the motorcycle or three-wheeled vehicle of Patent Document 1 is loaded with various types of rescue supplies assuming use by police officers, firefighters, Self-Defense Forces members, etc. For example, the compactness suitable for hanging on the wall of a private house or placing on the floor in the corner of a room is not considered. Also, it takes time to search for a fire extinguisher and a megaphone among various types of rescue supplies, and there is a risk of delay in starting fire extinguishing work or rescue requests.
[0006] Compared with conventional general fire extinguishers, a fire stick is a small and lightweight rod-shaped fire extinguishing device that sprays a fire extinguishing agent from its tip and is suitable for initial fire extinguishing immediately after a fire breaks out (for example, within 2 minutes). On the other hand, for example, when a fire breaks out in a house, if a megaphone can be used immediately, the residents can call for help towards the outside, and the possibility of being saved is increased.
[0007] This invention was created in view of these points, and its purpose is to provide a megaphone for fire extinguishing sticks that can be used to request rescue during fires, etc. [Means for solving the problem]
[0008] The megaphone for a fire extinguishing stick according to the present invention comprises a cylindrical mounting portion (71) that can be attached to the outer wall of a fire extinguishing stick (1), and a cylindrical megaphone body (720) that is axially connected to one end of the mounting portion.
[0009] This fire extinguishing stick megaphone has a mouthpiece (75) at the other end of the mounting section and a loudspeaker (76) on the side of the megaphone body opposite the mounting section (i.e., the side opposite to the mounting section).
[0010] For example, if a fire breaks out in a house, the resident who will be using the megaphone can pick up the fire extinguishing stick with a megaphone that is kept in the room and first remove the megaphone from the outside of the fire extinguishing stick. For example, the resident can hold the fire extinguishing stick in one hand to put out the fire and hold the megaphone in the other hand to call for help.
[0011] If there are two or more occupants in a room, one person can use the megaphone 70 to call for help while the other uses the fire extinguishing stick 1 to put out the fire, enabling a rapid response. In particular, the fire extinguishing stick's characteristics of being small, lightweight, and capable of continuously spraying inert gas can be utilized to effectively carry out initial firefighting immediately after a fire breaks out. [Brief explanation of the drawing]
[0012] [Figure 1] A diagram of a fire extinguishing stick with a megaphone attached according to the first embodiment. [Figure 2] This diagram shows the state after removing the megaphone from the state shown in Figure 1. [Figure 3] This diagram shows the state after removing the protective cap and end cap from the state shown in Figure 2. [Figure 4]A diagram explaining how to use a fire extinguisher stick. [Figure 5] Front view of a slim - type megaphone (for wall - mounting) according to the first embodiment. [Figure 6] Side view seen from the VI direction of FIG. 5. [Figure 7] Rear view seen from the VII direction of FIG. 6. [Figure 8] (a) Plan view seen from the VIIIa direction of FIG. 5, (b) Bottom view seen from the VIIIb direction of FIG. 5, (c) Cross - sectional view taken along the VIIIc - VIIIc line of FIG. 9. [Figure 9] Side view of the slim - type megaphone in a state of being wall - mounted by brackets. [Figure 10] A diagram showing a situation where a megaphone is used to seek rescue during a fire or the like. [Figure 11] Front view of a standard - type megaphone (for floor - placement) according to the second embodiment. [Figure 12] Side view seen from the XII direction of FIG. 11. [Figure 13] (a) Plan view seen from the XIIIa direction of FIG. 11, (b) Bottom view seen from the XIIIb direction of FIG. 11. [Figure 14] Diagram of safety glasses housed in an annular space in the third embodiment. [Figure 15] Diagram of safety glasses housed in a standard - type megaphone. [Figure 16] (a) A diagram corresponding to FIG. 16(b) in a slim - type megaphone, (b) View seen in the direction of the arrow XVIb of FIG. 15.
Embodiments for Carrying out the Invention
[0013] [[ID=
[0014] (Structure of the fire extinguisher stick) Referring to FIGS. 1 to 3, the structure of the fire extinguisher stick 1 will be described. The fire extinguisher stick 1 is composed of a stick body 3, a protective cap 4, a handle 5, and an end cap 6 that are coaxially arranged along the central axis O. Further, a megaphone (illustrated by the slim type megaphone of the first embodiment) 70S is detachably attached to the outer wall of the fire extinguisher stick 1. The handle 5 is integrally connected to the stick body 3. The protective cap 4 is detachable from the stick body 3. The end cap 6 is detachably attached to the side of the handle 5 opposite to the stick body 3. The stick body 3 is made of metal, and the protective cap 4, the handle 5, and the end cap 6 are formed of resin.
[0015] Hereinafter, regarding the megaphone, matters common to the slim type megaphone 70S of the first embodiment and the standard type megaphone 70L of the second embodiment will be described as "megaphone 70". FIG. 1 shows a state in which the megaphone 70 is attached to the outer wall of the fire extinguisher stick 1. FIG. 2 shows a state in which the megaphone 70 is removed from the state of FIG. 1. FIG. 3 shows a state in which the protective cap 4 and the end cap 6 are removed from the state of FIG. 2. The side where the fire extinguishing agent is sprayed, which is the left side of the paper surface in FIGS. 1 to 3, is defined as the tip side. The side opposite to the tip side of the fire extinguisher stick 1 is called the base end side.
[0016] The stick body 3 is composed of a cylindrical metal pipe, and a cartridge filled with a fire extinguishing agent is housed inside. An ignition agent 7 corresponding to the head medicine of a match is installed at the tip of the stick body 3 by coating or pasting. The handle 5 has a hollow cylindrical portion 15 whose tip side is connected to the stick body 3 and whose base end side opens. The user can grip the handle 5 when using the fire extinguisher stick 1.
[0017] The protective cap 4 is a closed-bottom cylindrical shape with a closed tip end, and is placed over the stick body 3 from the tip end to protect the igniter 7. The outer wall of the base end of the protective cap 4 is provided with a protective cap grip portion 13, which has axial protrusions. The user can remove the protective cap 4 from the tip end by holding the protective cap grip portion 13.
[0018] The end cap 6 is detachably attached to the hollow cylindrical portion 15 of the handle 5 from the base end of the fire extinguishing stick 1. The tip of the end cap 6 is fitted with a side coating 10 by application or attachment. The outer wall of the end cap 6 is provided with an end cap grip portion 12, which has axial protrusions. The user can hold the end cap grip portion 12 and fit the end cap 6 onto the hollow cylindrical portion 15. The outer wall of the end cap 6 fits lightly against the inner wall of the hollow cylindrical portion 15, preventing it from falling off.
[0019] With the end cap 6 attached to the hollow cylindrical portion 15, the side fitting 10 is housed inside the handle 5. When removing the end cap 6, the user can remove it from the hollow cylindrical portion 15 of the handle 5 by holding the end cap gripping portion 12 and pulling it out.
[0020] As shown in Figure 1, the megaphone 70 comprises a cylindrical mounting portion 71 and a megaphone body 720. In this embodiment, the mounting portion 71 is detachable from the outer wall of the protective cap 4 and is positioned axially by contacting the tip side of the protective cap gripping portion 13. The megaphone body 720 is axially connected to one end of the mounting portion 71. The megaphone 70 has a mouthpiece 75 at the other end of the mounting portion 71 and a loudspeaker 76 on the opposite side of the mounting portion 71 of the megaphone body 720. The detailed configuration of the megaphone 70 will be described later. When using the fire extinguishing stick 1, the megaphone 70 is first removed from the outer wall of the protective cap 4.
[0021] (How to use a fire extinguisher stick) Referring to Figure 4, the method of using the fire extinguishing stick will be explained. First, after the megaphone 70 is removed, in the first stage the user removes the protective cap 4 from the stick body 3 of the fire extinguishing stick 1. In the second stage the user removes the end cap 6 from the handle 5. This exposes the igniter 7 and side charge 10 that were covered during storage. In the third stage the user rubs the side charge 10 of the end cap 6 against the igniter 7 of the stick body 3 to ignite it, and the fire extinguishing agent sealed inside the stick body 3 is sprayed out. In the fourth stage the user points the nozzle towards the bottom of the flame to extinguish it.
[0022] In the third stage, when the ignition agent 7 in the stick body 3 is ignited, the components inside the cartridge undergo a chemical reaction, and the extinguishing agent is sprayed from the tip of the stick body 3. Specifically, potassium nitrate and dicyandiamide burn through a chemical reaction, and an inert gas containing white, vapor-like potassium particles is sprayed out. The large amount of potassium radicals depletes the oxygen inside and around the flame, creating a suffocating and suppressive effect that interrupts the combustion chain.
[0023] (Comparison of a fire extinguisher stick with a fire extinguisher) This section uses a conventional, general-purpose powder fire extinguisher (standard fire extinguisher) as a comparative example and explains the features of the fire extinguishing stick in comparison to it. For example, a 100-second spray type fire extinguishing stick without accessories measures 4 cm in diameter and 33 cm in length, and weighs 365 g, making it small and lightweight.
[0024] Conventional fire extinguishers, as a comparative example, use a large-diameter, cylindrical metal container and weigh, for example, 5 kg. It is difficult to spray fire extinguishing agent at flame sources in high places or narrow spaces using a heavy fire extinguisher. Furthermore, it is necessary to hold the fire extinguisher body with one hand and squeeze the lever with the other to spray, occupying both hands and resulting in poor operability. In contrast to the comparative example, the fire extinguishing stick used in this embodiment is small, lightweight, and can be used with one hand, thus offering superior operability and convenience. The following is a comparison item by item.
[0025] (1) Spray duration: The fire extinguishing stick can spray continuously for up to 100 seconds, for example. This is effective in achieving initial fire suppression, which is said to be extinguishing a fire within 2 minutes of it starting. (2) Weight: The fire extinguishing stick (excluding accessories) is lightweight at 365g, making it easy to carry in the event of a fire. (3) Residues: Because the fire extinguishing stick sprays an inert gas, no harmful residues are left behind. Therefore, it is easy to restore items and equipment at the site of the fire after it has been extinguished. (4) The fire extinguishing stick can handle flammable gas fires that cannot be handled by general fire extinguishers.
[0026] (5) Expiration date: The expiration date for fire extinguishing sticks is 15 years, which is longer than that of general fire extinguishers. (6) Durability: Because the fire extinguishing stick is non-pressurized, it has excellent durability and impact resistance. (7) Periodic inspection: Fire extinguishing sticks do not require periodic inspection by a legally qualified person. (8) Safety and Environment: The fire extinguishing stick uses an inert gas as its propellant. Therefore, it does not adversely affect the breathing or vision of the operator or those nearby, and does not contribute to global warming or ozone layer depletion.
[0027] For reference, the specifications of a general-purpose fire extinguisher, which is a comparative example, are as follows: (1) Spray duration: Standard fire extinguishers have a spray duration of approximately 15 seconds. This often fails to achieve initial fire suppression. (2) Weight: Standard fire extinguishers weigh approximately 5 kg, making them difficult to carry during a fire. (3) Residues: Standard fire extinguishers leave behind chemical residue and stains after spraying. This makes it difficult to restore items and equipment in the affected area after the fire has been extinguished. (4) Standard fire extinguishers are not suitable for flammable gas fires.
[0028] (5) Expiry date: Standard fire extinguishers deteriorate quickly and have a short shelf life. (6) Durability: Because general fire extinguishers are pressurized, they have inferior durability and impact resistance. (7) Periodic inspections: Standard fire extinguishers require periodic inspections by legally qualified personnel, and their handling is complicated. (8) Safety and Environment: The chemicals sprayed by general fire extinguishers can easily affect the breathing and vision of the operator and those nearby, and are also a cause of global warming and ozone layer depletion.
[0029] Next, the configuration of the megaphone for the fire extinguishing stick will be described. In multiple embodiments, substantially identical components are denoted by the same reference numerals, and redundant explanations are omitted. The first to third embodiments are collectively referred to as "this embodiment." Matters common to the slim-type megaphone 70S of the first embodiment and the standard-type megaphone 70L of the second embodiment are described as "megaphone 70."
[0030] Regarding storage configurations when attached to the fire extinguishing stick 1, the slim-type megaphone 70S of the first embodiment is intended for wall mounting. The standard-type megaphone 70L of the second embodiment is intended for floor placement and is slightly larger than the slim-type megaphone 70S. Note that the initial letter S for "Standard" overlaps with the S for "Slim Type," so it is replaced with L for "Large."
[0031] <First Embodiment> The slim-type megaphone 70S of the first embodiment will be described with reference to Figures 5 to 9. Figures 5 to 8(b) show the external shape of the slim-type megaphone 70S as a standalone unit, removed from the fire extinguishing stick 1, viewed from various directions. Figures 9 and 8(c) show the fire extinguishing stick 1 with the slim-type megaphone 70S attached, hung on the wall W by the bracket B. Note that the orientation shown in Figure 8(c) is different from the orientation of the cross-sectional indicator line in Figure 9, but for convenience, it is shown to match the orientation in Figures 8(a) and (b).
[0032] The megaphone 70 is made of a flexible resin material and comprises a cylindrical mounting portion 71 and a megaphone body 720 centered on a central axis O. The mounting portion 71 is detachably attached to the outer wall of the fire extinguishing stick 1. In this embodiment, the mounting portion 71 is detachably attached to the outer wall of the protective cap 4, rather than the outer wall of the handle 5 of the fire extinguishing stick 1. Since the handle 5 is not covered by the megaphone 70, it does not hinder the user from gripping the handle 5. The megaphone body 720 is axially connected to one end of the mounting portion 71.
[0033] The megaphone 70 has a mouthpiece 75 at the other end of the mounting portion 71, that is, the end opposite to the megaphone body 720. The mouthpiece 75 also serves as a fitting hole when the mounting portion 71 is attached to and detached from the outer wall of the fire extinguishing stick 1. The megaphone 70 also has a sound amplification port 76 at the open end 74, which is the end of the megaphone body 720 opposite the mounting portion. The megaphone 70 amplifies the sound input into the mouthpiece 75 by the user and outputs it from the sound amplification port 76. Preferably, the outer edge 743 of the open end 74 is rounded (i.e., "rounded corners"). This helps to mitigate the impact if the user accidentally hits the megaphone 70 with a person or object.
[0034] The mounting portion 71 is formed to be elastically deformable in the radial direction. Figures 5 to 8 illustrate the radial shape of the mounting portion 71 when it is reduced in diameter in the megaphone unit, resulting in an elliptical shape. When attached to the outer wall of the fire extinguishing stick 1, the inner wall 715 of the mounting portion 71 expands elastically and contacts the outer wall of the fire extinguishing stick 1. The inner wall 715 of the mounting portion 71 has a length of several centimeters in the axial direction and makes surface contact with the outer wall of the fire extinguishing stick 1, thus stabilizing the mounting position of the megaphone 70. The mounting portion 71 is also provided with a ring portion 719 through which a neck strap 79 worn by the user passes.
[0035] The megaphone body 720 has a flattened cross-sectional shape perpendicular to the central axis O. In the slim-type megaphone 70S, as shown in Figures 8(a) and (b), the megaphone body 720 is formed in a D-shape in which a part of the circumference is connected by a chord in at least a part of the cross-section perpendicular to the central axis O. In other words, the megaphone body 720 of the slim-type megaphone 70S has an arc-shaped curved surface portion 72 and one interference avoidance portion 73. The arc-shaped curved surface portion 72 is formed along a part of a virtual circle shown by a dashed line in a cross-section perpendicular to the central axis O. The interference avoidance portion 73 is formed inside the virtual circle and both ends are connected to the arc-shaped curved surface portion 72.
[0036] In the slim-type megaphone 70S, the arc-shaped curved surface portion 72 tapers in diameter from the mounting portion 71 side toward the opposite mounting portion side, and then extends to the open end 74 with a nearly constant diameter. The interference avoidance portion 73 is formed in a substantially planar shape. As a result, the distance from the central axis O to the outer wall of the interference avoidance portion 73 is shorter than that of the arc-shaped curved surface portion 72, so that when placed close to an object, interference with the object is avoided. The interference avoidance portion 73 is not limited to a substantially planar shape, but may be formed from a gently curved surface with a smaller curvature than the arc-shaped curved surface portion 72, or from multiple bent surfaces.
[0037] Specifically, when the fire extinguishing stick 1 is stored on the wall, the wall W becomes the object against which the interference avoidance part 73 avoids interference. As shown in Figures 9 and 8(c), the fire extinguishing stick 1 with the slim-type megaphone 70S attached is hung on the wall W by the bracket B. The bracket B has a pair of cylindrical locking parts B1 joined to a base B3 via a leaf spring B2. The leaf spring B2 biases the pair of locking parts B1 inward. In the free state shown by the dashed line in Figure 8(c), the distance between the pair of locking parts B1 is narrower than the diameter of the mounting part 71. When the user pushes the mounting part 71, the leaf spring B2 expands outward, clamping the mounting part 71 between the pair of locking parts B1.
[0038] In this configuration, the orientation of the slim-type megaphone 70S relative to its central axis O is set so that the interference avoidance section 73 faces the wall W, thereby preventing the megaphone body 720 from interfering with the wall W. Therefore, when storing it by hanging it on a wall W in a private residence or business premises, the protrusion dimension from the wall W is reduced, allowing for compact storage.
[0039] Next, referring to Figure 10, the circumstances under which the megaphone-equipped fire extinguishing stick of this embodiment is used will be described. In apartments and condominiums, it is preferable that the megaphone-equipped fire extinguishing stick be kept in each room rather than in a common corridor. For example, when a fire breaks out in a house, a resident in a room on the second floor or higher can pick up the megaphone-equipped fire extinguishing stick that is hanging on the wall of their room or placed on the floor, and first remove the megaphone 70 from the outer wall of the fire extinguishing stick 1.
[0040] A resident using the megaphone 70 can, for example, shout "Fire! Help!" out of a second-floor window. Because the fire extinguishing stick 1 is small and lightweight, it is possible to hold the fire extinguishing stick 1 in one hand to extinguish the fire while holding the megaphone 70 in the other hand to call for help. In addition, by putting the neck strap 79, which is threaded through the ring portion 719, around the neck, the user can keep both hands free.
[0041] If there are two or more occupants in a room, one person can use the megaphone 70 to call for help while the other uses the fire extinguishing stick 1 to put out the fire, enabling a rapid response. In particular, the characteristics of the fire extinguishing stick 1, which is small, lightweight, and can continuously spray inert gas for 100 seconds, can be utilized to effectively perform initial fire extinguishing work immediately after a fire breaks out (for example, within 2 minutes).
[0042] In addition to fires, the Megaphone 70 can also be used to call for help in situations such as when the surrounding area is flooded due to torrential rain or river overflows, when a house collapses due to an earthquake and you are trapped inside, or when a robber or intruder breaks in.
[0043] <Second Embodiment> Referring to Figures 11 to 13, the differences between the standard type megaphone 70L of the second embodiment and the slim type megaphone 70S will be explained. Figures 11 to 13 show the external shape of the standard type megaphone 70L as a standalone unit, removed from the fire extinguishing stick 1, viewed from various directions.
[0044] The megaphone body 720 has a flattened cross-sectional shape perpendicular to the central axis O. In the standard type megaphone 70L, as shown in Figures 13(a) and (b), the megaphone body 720 has a part of its circumference connected by a chord on both sides of a straight line passing through the central axis O in at least a portion of the cross-section perpendicular to the central axis O. In other words, the megaphone body 720 of the standard type megaphone 70L has two arc-shaped curved surfaces 72 and two interference avoidance sections 73.
[0045] The arc-shaped curved surface portion 72 is formed along a virtual circle shown by a dashed line in a cross-section perpendicular to the central axis O, and its diameter expands in a tapered manner with a nearly constant slope from the mounting portion 71 toward the open end 74. In the axial direction of the megaphone body 720, the arc-shaped curved surface portion 72 is formed along the entire circumference of the virtual circle in about half of the area on the mounting portion 71 side. In the area on the open end 74 side, the arc-shaped curved surface portion 72 is formed along a portion of the virtual circle in about half of the area. Two interference avoidance portions 73, for example, which are roughly planar and formed inside the virtual circle, have both ends connected to the arc-shaped curved surface portion 72.
[0046] As shown by the dashed line in Figure 12, the standard type megaphone 70L attached to the fire extinguishing stick 1 is placed on the floor with its open end 74 in contact with the floor F. At this time, by positioning the two interference avoidance parts 73 parallel to the wall W, it can be placed as close to the wall W as possible, thereby reducing the space occupied in rooms, corridors, etc.
[0047] <Third Embodiment> The third embodiment will be described with reference to Figures 14 to 16. In the third embodiment, in the stored state of the fire extinguishing stick 1, safety glasses 80 are housed between the inner wall of the megaphone 70 and the outer wall of the protective cap 4. As shown in Figure 14, the safety glasses 80 are made of a flexible sheet 81 measuring approximately 20 cm wide and 8 cm high. Hereinafter, according to the orientation of the safety glasses 80 shown in Figure 14, that is, the orientation when worn on the face by the user, the longitudinal direction of the safety glasses 80 will be referred to as the "horizontal direction" and the short direction as the "vertical direction".
[0048] The flexible sheet 81 has a rounded shape with rounded corners and a nose-rest portion, and viewing windows 82 are positioned to accommodate both eyes. A heat-resistant eyepiece film 83 is attached to cover the viewing windows 82. Ear loops 84 are attached to both lateral ends of the flexible sheet 81, allowing the user to wear the safety glasses 80 by placing the ear loops 84 over their ears. A simple illumination unit 85 is also provided in the upper part between the eyes.
[0049] Figures 15 and 16(b) show the storage state of the fire extinguishing stick 1 with a standard type megaphone 70L attached. The annular space 78 between the standard type megaphone 70L and the protective cap 4 is sufficiently wide. Therefore, near the open end 74, safety glasses 80 can be stored on one side of the protective cap 4 in almost their original form, and further back from the open end 74, the safety glasses 80 can be stored with a slight curve. In addition, for example, a disaster prevention mask 87 can be stored on the other side of the protective cap 4. Not limited to disaster prevention masks 87, items such as handkerchiefs, disaster prevention hoods, and work gloves may also be stored in the annular space 78.
[0050] Figure 16(a) shows the storage state of the fire extinguishing stick 1 with the slim-type megaphone 70S attached. In the case of the slim-type megaphone 70S, the annular space 78 between it and the protective cap 4 is relatively narrow, but by curving the vertical edge of the flexible sheet 81 to conform to the annular space 78, the safety glasses 80 can be stored in the annular space 78.
[0051] Users can protect their eyes from flames and smoke by wearing safety glasses 80 during fire evacuation or firefighting operations. Furthermore, conventional safety glasses, which are stored by folding the frame, are rigid and have little degree of freedom of deformation, making it difficult to store them in the annular space 78, even with the standard type megaphone 70L, let alone the slim type megaphone 70S. In contrast, the safety glasses 80 used in the third embodiment use a flexible sheet 81 as the base material, so they can be bent and placed in the annular space 78 and stored together with the fire extinguishing stick 1.
[0052] <Other Embodiments> (a) The fire extinguishing stick is not limited to the configuration of the above embodiment, but may be any rod-shaped fire extinguishing device that can spray fire extinguishing agent from its tip and has an outer wall to which the attachment portion 71 of the megaphone 70 can be attached or detached. The attachment portion 71 may be attached to the outer wall of the handle 5 if it does not hinder the user from gripping it.
[0053] (b) The specific shape of the megaphone body 720 is not limited to the shapes exemplified in Figures 5 to 8 and Figures 11 to 13, but is at least cylindrical. The cross-sectional shape perpendicular to the axis does not have to be flat, but may be circular or the like. The ratio of the axial length of each part and the gradient may be set appropriately considering the sound amplification function, moldability, design, etc.
[0054] (c) The open end 74 of the mounting portion of the megaphone body 720 is not limited to a configuration in which the outer edge 743 is rounded, but may also be configured to mitigate impact by, for example, attaching an annular cushioning member to the outer edge.
[0055] The present invention is not limited in any way to the embodiments described above, and can be implemented in various forms without departing from its spirit. [Explanation of Symbols]
[0056] 1... Fire extinguishing stick, 4. Protective cap, 70, 70S... (for fire extinguishing sticks) Slim type megaphone, 70, 70L... (for fire extinguishing sticks) Standard type megaphone, 71...Mounting section, 715...Inner wall, 720...Megaphone body, 72...Circular curved surface section, 73...Interference avoidance section, 75...Mouthpiece, 76...Audio jack.
Claims
1. A cylindrical mounting part (71) that can be attached to the outer wall of the fire extinguishing stick (1), A cylindrical megaphone body (720) is connected axially to one end of the aforementioned mounting portion, Equipped with, A megaphone for a fire extinguishing stick, having a mouthpiece (75) at the other end of the mounting portion and a loudspeaker (76) on the side of the megaphone body opposite the mounting portion.
2. The mounting portion is elastically deformable in the radial direction, The megaphone for a fire extinguishing stick according to claim 1, wherein when attached to the outer wall of the fire extinguishing stick, the inner wall (715) of the attachment portion expands elastically and contacts the outer wall of the fire extinguishing stick.
3. The megaphone body is a megaphone for a fire extinguishing stick according to claim 1, wherein the cross-sectional shape perpendicular to the central axis is formed to be flat.
4. The megaphone body of the fire extinguishing stick according to claim 3, further comprising, in at least a portion of the cross section perpendicular to the central axis, an arc-shaped curved surface portion (72) formed along a virtual circle, and one or more interference avoidance portions (73) formed inside the virtual circle, with both ends connected to the arc-shaped curved surface portion.
5. The megaphone for a fire extinguishing stick according to claim 1, wherein the open end (74), which is the end of the megaphone body opposite the mounting portion, has a rounded outer edge (743).
6. The aforementioned fire extinguishing stick works by igniting the igniter (7) located at the tip of the stick body (3) by rubbing the side charge (10) against it, thereby spraying the fire extinguishing agent sealed inside the stick body. A protective cap (4) is placed over the stick body to protect the igniter, A handle (5) connected to the stick body and capable of being grasped by the user, Equipped with, The megaphone for a fire extinguishing stick according to any one of claims 1 to 5, wherein the mounting portion is detachably attached to the outer wall of the protective cap.