megaphone

Abstract

It can be easily assembled, and the cylindrical parts that produce striking sounds in close proximity to each other can be easily replaced. [Solution] A strip-shaped member 30 is made of peelable tape and is wrapped around the outer circumference of the parts of the two cylindrical sections 10 and 20 near the mouthpiece forming sections 11 and 21, holding them in close proximity. Therefore, the process of integrating the two cylindrical sections 10 and 20 is simple, and because the cylindrical sections are integrated by wrapping the strip-shaped member 30 around them, the integration process is easy regardless of the size of the cylindrical sections 10 and 20. For example, if one cylindrical section is damaged and only that side needs to be replaced, or if you want to combine the two cylindrical sections with different designs, you can easily separate the two cylindrical sections by peeling off this tape, making it easy to deal with such situations.

Description

Technical Field

[0001] The present invention relates to a megaphone used for cheering or the like.

Background Art

[0002] In various events such as sports, concerts, and plays, megaphones for cheering players and performers are known. For example, Patent Document 1 discloses a megaphone having a plurality of sound amplifying tubes, the plurality of sound amplifying tubes having a single mouthpiece portion shared at their rear portions, and the plurality of sound amplifying tubes being provided so as to strike each other by impact. Further, Patent Document 2 discloses a combination of two substantially semi-conical megaphones each having a flat surface from the tip end portion to the base end portion, and the portion from the base end portion to the mouth portion which is the rear end portion being bent upward or downward when viewed from the side. At the base end portion, the two megaphones are connected by a pin, and by opening and closing the two megaphones with the pin as a fulcrum and using them like a clapper, a striking sound is generated. Also, by placing the mouth against the mouth portion and发声, the voice can be amplified and the voice can be transmitted further away.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Patent Document 1 describes a configuration in which the rear ends of multiple loudspeaker tubes are inserted into a single cylindrical mouthpiece. By applying external force to bring the multiple loudspeaker tubes into contact, a percussive sound can be produced, and the mouthpiece can also be used to amplify a voice. However, since the multiple loudspeaker tubes move closer together and further apart with each percussive sound, the mouthpiece that supports the rear ends of the loudspeaker tubes must be designed so that the loudspeaker tubes do not come out of the mouthpiece. For this reason, the rear ends of the loudspeaker tubes are provided with protrusions and indentations, and the mouthpiece also has protrusions and indentations that fit into these. Furthermore, a structure is disclosed in which the two are connected by rivets or by hinge pins. Thus, the configuration of Patent Document 1 is cumbersome because it requires the user to provide a single mouthpiece for multiple loudspeaker tubes. Also, the loudspeaker tube and mouthpiece are integrated and cannot be easily separated by the user. Therefore, if one of the loudspeaker tubes is damaged, it is difficult for the user to purchase and replace only that one, and they would have to purchase a new one.

[0005] The design in Patent Document 2 is similar; it has a structure in which two megaphones are connected by a hinge pin, making the structure complex and difficult to replace only one of the megaphones. Furthermore, since the two megaphones are also divided into two mouthpieces, only one mouthpiece can be used for speaking, making it difficult to position the mouth correctly. This drawback of Patent Document 2 has also been pointed out in Patent Document 1, which, considering the convenience of positioning the mouthpiece, constructs the mouthpiece as a single cylindrical body. However, forming it as a single cylindrical body makes the mounting structure to multiple loudspeaker tubes complex, as described above.

[0006] The present invention has been made in view of the above, and aims to provide a megaphone with a simple structure, easy assembly, easy replacement of the cylindrical part, and easy replacement in case of damage to only one part, or when the user wishes to change only one part to a different color or pattern for design reasons, or when the purchaser can arbitrarily select a combination of cylindrical parts with various designs to create a megaphone of their preference. In addition, the present invention aims to provide a megaphone that does not cause discomfort when the user brings it to their mouth. [Means for solving the problem]

[0007] To solve the above problems, the present invention provides: A megaphone having a mouthpiece on one end along the longitudinal direction and a larger diameter sound amplification opening on the other end, It is constructed having two cylindrical sections with opposing surfaces facing each other, Each of the two cylindrical sections is provided with a mouthpiece forming section and a sound amplification section, On at least one of the opposing surfaces of the two cylindrical portions, a protrusion is provided that is positioned closer to the mouthpiece forming portion than the longitudinal center and protrudes toward the other opposing surface, A strip-shaped member is wound around the outer circumference of the two cylindrical sections, closer to the two mouthpiece forming sections than the longitudinal center position, to hold the two mouthpiece forming sections of the two cylindrical sections in close proximity. This is done so that the opposing surfaces near the sound amplification opening are normally spaced apart via the protrusions, and an external force is applied to bring the opposing surfaces near the sound amplification opening closer together using the protrusions as a fulcrum, causing the opposing surfaces to come into contact and produce a striking sound. It has, The aforementioned strip-shaped member is wound around the outer surface with at least a portion overlapping, and is made of a peelable tape that adheres tightly to the outer surface of the megaphone. To provide.

[0008] Preferably, the tape is a grip tape. Preferably, each opposing surface of the two cylindrical portions has a notch on the side of the respective mouthpiece forming portion, and when the respective mouthpiece forming portions are brought close together, the peripheral portions of each mouthpiece forming portion, excluding the notch, are combined to form the mouthpiece.

[0009] Preferably, the two cylindrical portions are each formed in a substantially semicircular cross-section, and the surfaces that form the portion corresponding to the chord are the opposing surfaces. It is preferable that each of the opposing surfaces has a configuration in which the approximately central part in the direction along the chord bulges outward. [Effects of the Invention]

[0010] The megaphone of the present invention is constructed using a removable tape as a strip-shaped member that is wrapped around the outer circumference of the parts of the two cylindrical sections near the mouthpiece formation area, holding them in close proximity. Therefore, the process of integrating the two cylindrical sections is simple, and because the cylindrical sections are integrated by wrapping the strip-shaped member around them, the integration process is easy regardless of the size of the cylindrical sections. For example, if one cylindrical section is damaged and only that section needs to be replaced, or if it is desired to combine the two cylindrical sections with different designs, the two cylindrical sections can be easily separated by peeling off the tape, making it easy to address these situations.

[0011] When using grip tape as a removable tape, the adhesive force makes it easy to integrate the parts near the two mouthpiece formations, and it is also easy to remove by unwinding it.

[0012] Furthermore, by having notches on each of the opposing surfaces of the two cylindrical sections on the side of the mouthpiece forming section, when the mouthpiece forming sections are brought close together, the peripheral portions of each mouthpiece forming section, excluding the notches, combine to form a single mouthpiece. As a result, although the entire system from the loudspeaker to the mouthpiece forming section uses two integrated cylindrical sections, the user only needs to bring their mouth to one mouthpiece, resulting in less discomfort. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1(a) is a perspective view of a megaphone according to one embodiment of the present invention, viewed from the sound-amplifying side, and Figure 1(b) is a perspective view viewed from the mouthpiece forming side. [Figure 2] Figure 2(a) is a plan view of the megaphone according to the first embodiment described above, viewed from the mouthpiece forming section, and Figure 2(b) is a perspective view, viewed from the mouthpiece forming section, with a different viewing angle from Figure 2(b). [Figure 3]FIG. 3(a) is a plan view of the cylindrical portion as seen from the facing surface side, FIG. 3(b) is a cross-sectional view taken along line A-A of FIG. 3(a), and FIG. 3(c) is a cross-sectional view taken along line B-B of FIG. 3(a). [Figure 4] FIGS. 4(a) and (b) are diagrams for explaining how to wind the belt-like member. [Figure 5] FIG. 5 is a diagram for explaining how to use the megaphone of the present embodiment.

Embodiments for Carrying out the Invention

[0014] Hereinafter, the present invention will be described based on the embodiments shown in the drawings. FIGS. 1 to 5 are diagrams for explaining a megaphone 1 according to an embodiment of the present invention. As shown in these diagrams, the megaphone 1 of the present embodiment is configured to have two cylindrical portions 10 and 20.

[0015] As shown in FIGS. 1(a) and (b), the two cylindrical portions 10 and 20 are formed in the same shape from a synthetic resin, and are provided with blowing port forming portions 11 and 21 on one end side in the longitudinal direction, and sound amplifying ports 12 and 22 on the other end side. The cylindrical portions 10 and 20 are formed in a substantially semicircular cross-section, and the portions forming the arcs 10a and 20a in the cross-sectional shape become the outer peripheral surfaces 13 and 23 extending in the longitudinal direction, and the portions forming the chords 10b and 20b become the facing surfaces 14 and 24 extending in the longitudinal direction (see FIG. 3(b)). Further, when each of the cylindrical portions 10 and 20 is viewed with the facing surface 14 and 24 as the front, it is formed in a substantially conical shape that expands in a tapered manner from the blowing port forming portion 11 and 21 side toward the sound amplifying port 12 and 22 (see FIGS. 1(a) and (b), FIGS. 2(a) and (b), and FIG. 3(a)).

[0016] At least one of the opposing surfaces 14 and 24, preferably both as shown in the present embodiment, has protruding portions 15 and 25 that protrude toward each other (see FIGS. 3(a), (c), and FIG. 5). The protruding portions 15 and 25 are formed so as to abut against each other closer to the sound outlet forming portions 11 and 21 than the central position in the longitudinal direction of the cylindrical portions 10 and 20. As long as the portions of the opposing surfaces 14 and 24 on the side of the sound amplifying openings 12 and 22 can be spaced apart in a normal state while the two sound outlet forming portions 11 and 21 are close to each other, the shape thereof is not limited. In the present embodiment, as shown in FIG. 3(c), in a cross section along the longitudinal direction, it is formed in an inclined surface shape in which the protruding height increases from the sound outlet forming portion 11 and 21 toward the sound amplifying opening 12 and 22.

[0017] The opposing surfaces 14 and 24 may be formed as flat surfaces except for the protruding portions 15 and 25. However, as shown in FIGS. 3(a) and (c), a design such as forming V-shaped groove portions 14a and 24a, for example, can be applied between the sound amplifying opening 12 and 22 side and the protruding portions 15 and 25. In this case, by forming the groove portions 14a and 24a, inverted triangular convex portions 14b and 24b that protrude relatively toward the sound amplifying opening 12 and 22 side are formed. As a result, as will be described later, when the opposing surfaces 14 and 24 come close to each other to generate a hitting sound, the convex portions 14b and 24b contact each other. There is a difference in the pitch and timbre of the hitting sound between the case where the area of the contacting portion is small, such as the convex portions 14b and 24b, and the case where a wider area portion contacts without forming such convex portions 14b and 24b. Therefore, by adjusting the three-dimensional shape applied to the opposing surfaces 14 and 24, the hitting sound when the two are brought into contact can be adjusted in various ways. As a result, various types of megaphones 1 can be provided, such as those with a high-pitched hitting sound and those with a low-pitched hitting sound.

[0018] Further, the cylindrical portions 10 and 20 can be formed in a shape in which a substantially central portion in the width direction (the direction along the chord 10b) bulges slightly outward rather than being an exact flat surface for the opposing surfaces 14 and 24. Also in this case, when the opposing surfaces 14 and 24 are brought into contact with each other, the substantially central portions that bulge are likely to contact each other, and the hitting sound becomes high-pitched and is easy to resonate.

[0019] The two cylindrical sections 10 and 20 are integrated using a strip-shaped member 30 with their opposing surfaces 14 and 24 facing each other to form a single megaphone 1. The strip-shaped member 30 is preferably a tape that can be wrapped around the outer surfaces 13 and 23 of the two cylindrical sections 10 and 20, as shown in Figures 1(a) and (b), so that it adheres tightly to both and integrates with them, while also being peelable by unwinding. Since a higher adhesive strength makes it more difficult to peel off, it is preferable to use a tape with an adhesive strength that does not leave a large amount of adhesive or tack on the surface to which it is attached when peeled off. As such a tape, it is preferable to use commercially available grip tape that is wrapped around the grips of tennis rackets, etc. In addition, grip tapes disclosed in Japanese Patent Publication No. 2022-73425, Japanese Utility Model Registration No. 3226709, etc. can also be used. The grip tape adheres tightly to the overlapping area due to its adhesive properties when wrapped so that at least a portion overlaps, but it is also easy to peel off.

[0020] In this embodiment, since a peelable strip-shaped member (grip tape) 30 is used, the process of integrating the two cylindrical parts 10 and 20 is easy. Furthermore, because a strip-shaped member 30 is used, there are no restrictions on the size of the area around which the strip-shaped member 30 is wrapped, and cylindrical parts 10 and 20 of various sizes can be easily integrated.

[0021] The specific wrapping method is as follows. First, as shown in Figure 4(a), the grip tape as a strip member 30 is wrapped at least once around the circumferential surface (outer surface 13 and opposing surface 14) of one of the cylindrical parts 10 near the mouthpiece forming part 11. In this state, the opposing surfaces 14 and 24 of the two cylindrical parts 10 and 20 are brought into contact, and the protruding parts 15 and 25 are brought together, aligning the edge positions of the mouthpiece forming parts 11 and 21 located on one end in the longitudinal direction. As a result, the outer circumference of the outer surfaces 13 and 23 of the two cylindrical parts 10 and 20 becomes a single circle. Next, as shown in Figure 4(b), the grip tape as a strip member 30 is wrapped at least once in a circular shape so as to span both of the two outer surfaces 13 and 23. After that, it is wrapped spirally in an oblique direction, overlapping a portion of it. To prevent the wrapped grip tape from easily peeling off from the end of the wrapping, fixing tape (not shown) is wrapped over the upper surface of the end of the wrapping to secure it. Furthermore, if the adhesive strength of the strip-shaped member 30 is above a predetermined level and does not easily peel off from the end of the wrap, it is not necessary to wrap such fixing tape around it.

[0022] The wrapping range is not limited and can be such that the two cylindrical parts 10 and 20 do not easily separate, for example, around 2 to 3 turns, or around the area where the protruding parts 15 and 25 are formed. It can also be such that when the user grips it, a certain area of ​​the hand is in contact with the grip tape, making it less slippery and allowing for a stable hold. In this case, since there are individual differences in palm size, it is easier to adjust if the grip tape as a strip member 30 can be wrapped around by the user. For example, if the cylindrical parts 10 and 20 and the strip member (grip tape) 30 are provided unassembled, and the user assembles them as described above, the wrapping range of the grip tape can be set to the user's preference. Furthermore, when provided unassembled in this way, it is possible to provide the cylindrical parts 10 and 20 with the same color and unified pattern, or with different colors and different patterns, thereby providing the megaphone 1 with a design to the user's preference.

[0023] When the strip-shaped member (grip tape) 30 is wrapped around the mouthpiece, the two mouthpiece forming sections 11 and 21 are in close proximity, with opposing surfaces 14 and 24 in between, as shown in Figures 1(b) and 2(a) and (b). However, when the mouthpiece forming sections 11 and 21 are viewed from the end face direction, if the edges 13a and 23a of the outer peripheral surfaces 13 and 23 and the edges 14a and 24a of the opposing surfaces 14 and 24 are at the same position (a position on a virtual surface passing through the edges 13a and 23a), the edges 14a and 24a of the opposing surfaces 14 and 24 act as a partition, preventing the edges 13a and 23a of the outer peripheral surfaces 13 and 23 from connecting, and resulting in the mouthpiece forming sections 11 and 21 becoming simply two semicircular openings. In this case, when a user attempts to speak by placing their mouth to the mouthpiece, they will do so through one of the mouthpiece forming sections 11 or 21 separated by the partition.

[0024] Therefore, in this embodiment, notches 14b and 24b are formed on the opposing surfaces 14 and 24 that form the mouthpiece forming parts 11 and 21 (see Figures 2(b), 3(b), (c), and 4(a)), and the position of their edges 14a and 24a is set to be closer to the sound amplification opening 12 and 22 than the position on the virtual plane passing through the edges 13a and 23a of the outer peripheral surfaces 13 and 23. As a result, the edges 13a and 23a of the outer peripheral surfaces 13 and 23 of the mouthpiece forming parts 11 and 21 are connected in a continuous line (however, since the cylindrical parts 10 and 20 are separate components, there is naturally a small gap between the edges 13a and 23a), forming almost a single circle. This single circle becomes the mouthpiece 40. Therefore, when the user brings their mouth to the mouthpiece 40, the edges 14a and 24a of the opposing surfaces 14 and 24 do not get in the way, and they can speak. Although there is only one mouthpiece 40, the sound is emitted from two sound amplification ports 12 and 22 via the mouthpiece forming sections 11 and 21.

[0025] The megaphone 1 of this embodiment is used as follows: The user grasps the wrapped band-shaped member 30 with one hand. In this state, the user strikes an appropriate object with the outer peripheral surfaces 13 and 23 of the two cylindrical parts 10 and 20 on the side with the loudspeaker openings 12 and 22. For example, the user may strike their other hand, their arm or leg, or the back of a seat in the cheering section. This applies an external force that brings the opposing surfaces 14 and 24 near the loudspeaker openings 12 and 22 closer together, with the protrusions 15 and 25 acting as fulcrums. As shown by the arrows in Figure 5, the opposing surfaces 14 and 24 move closer to and further apart from each other, and the opposing surfaces come into contact with each other. In particular, in this embodiment, the inverted triangular protrusions 14b and 24b come into contact with each other, producing a sound. Multiple sets of megaphones 1 can be prepared and the megaphones 1 can be struck together to produce a sound.

[0026] When amplifying cheers or other voices, the mouthpiece 40 is placed to the mouth and the voice is emitted as described above. As a result, the voice is emitted from the two amplification ports 12 and 22 via the two mouthpiece forming sections 11 and 21. Although there are two amplification ports 12 and 22, and the device is configured to produce percussive sounds by the contact between the cylindrical sections 10 and 20 as described above, it can be used in the same way as a megaphone 1 with a single mouthpiece 40, so there is no discomfort when speaking due to having two mouthpiece forming sections 11 and 21.

[0027] If, for example, one of the cylindrical sections 10 and 20 is damaged due to long-term use, or if you want to change the design of one of them, after peeling off the fixing tape, peel off the grip tape as a strip-shaped member 30 by rewinding it. This allows the two cylindrical sections 10 and 20 to be easily separated. Then, by combining the new replacement cylindrical sections 10 and 20 and securing them by wrapping the grip tape as a strip-shaped member 30 around the outer circumferential surfaces 13 and 23 near the mouthpiece forming sections 11 and 21 as described above, a megaphone 1 with a new cylindrical section 10 and 20 can be easily prepared. Therefore, for example, if only one of the cylindrical sections 10 and 20 is damaged, there is no need to buy a whole new one or to request a repair from a professional, and maintenance costs can be reduced while allowing for longer use.

[0028] In the above embodiment, the cylindrical parts 10 and 20 have a roughly semicircular cross-section. However, they can also be configured such that the outer surfaces 13 and 23 have irregularities or the outer surfaces 13 and 23 have a rectangular cross-section, as long as they have opposing surfaces 14 and 24 that produce a sound, mouthpiece forming parts 11 and 21 and a sound amplification opening 12 and 22, and the two mouthpiece forming parts 11 and 21 can be combined to form a single mouthpiece 40. However, since the outer surfaces 13 and 23 are applied by touching them to the hand or the like to apply external force, it is undesirable if they cause pain or discomfort when touched to the hand or the like, and in that respect, a roughly semicircular shape like that of this embodiment is preferable. [Explanation of Symbols]

[0029] 1 Megaphone 10,20 Cylinder part 11,21 Nozzle forming section 12,22 Loudspeaker 13,23 Outer surface 14,24 Opposing surfaces 15,25 Protrusion 30 Strip-shaped member 40 mouthpieces

Claims

1. A megaphone having a mouthpiece on one end along the longitudinal direction and a larger diameter sound amplification opening on the other end, It is constructed having two cylindrical sections with opposing surfaces facing each other, Each of the two cylindrical sections is provided with a mouthpiece forming section and a sound amplification section, On at least one of the opposing surfaces of the two cylindrical portions, a protrusion is provided that is positioned closer to the mouthpiece forming portion than the longitudinal center and protrudes toward the other opposing surface, A strip-shaped member is wound around the outer circumference of the two cylindrical sections, closer to the two mouthpiece forming sections than the longitudinal center position, to hold the two mouthpiece forming sections of the two cylindrical sections in close proximity. This is done so that the opposing surfaces near the sound amplification opening are normally spaced apart via the protrusions, and an external force is applied to bring the opposing surfaces near the sound amplification opening closer together using the protrusions as a fulcrum, causing the opposing surfaces to come into contact and produce a sound. It has, The aforementioned strip-shaped member is wound around the outer surface with at least a portion overlapping, and is made of a peelable tape that adheres tightly to the outer surface.

2. The megaphone according to claim 1, wherein the tape is a grip tape.

3. The megaphone according to claim 1, wherein each opposing surface of the two cylindrical portions has a notch on the side of each mouthpiece forming portion, and when the mouthpiece forming portions are brought close together, the peripheral portions of each mouthpiece forming portion excluding the notch are combined to form the mouthpiece.

4. The megaphone according to claim 1, wherein the two cylindrical portions are each formed in a substantially semicircular cross-section, and the surfaces that form the portion corresponding to the string are the respective opposing surfaces.

5. The megaphone according to claim 4, wherein each of the opposing surfaces bulges outward in approximately the central part in the direction along the chord.

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