JP3176777U - megaphone - Google Patents

Abstract

Provided is a megaphone that can be used without considering the meeting direction and can transmit sound well.
Three loudspeakers 21, 22, and 23 are connected by a connecting tube 31, and notches are provided in the tube main body portions of the loudspeaker tube 21, the loudspeaker tube 22, and the loudspeaker tube 23. A single cylinder. As a result, a desired sound can be generated regardless of the direction in which the megaphone 10 is struck, and a good sound can be transmitted from the tip portion.
[Selection] Figure 1

Description

  The present invention relates to a megaphone, and more particularly to a megaphone used for sports support and the like.

  2. Description of the Related Art Conventionally, megaphones used for cheering such as baseball and soccer have been known to have a conical cylindrical shape. Such a general megaphone has a use as a loudspeaker and a use as a substitute for a beat tree by hitting the megaphone on the palm of the hand.

  As such a megaphone, for example, a megaphone has been proposed in which a single megaphone is separated into two cylinders, and the separated cylinders are beaten together in a timed manner to make sound easily (patent) Reference 1).

Japanese Patent Laid-Open No. 10-268869

However, the above-described conventional megaphone has a problem in that sound cannot be generated satisfactorily unless the direction in which the two cylinders are put together is taken into consideration. That is, there is a problem that a loud sound cannot be generated even if the megaphone main body is arranged in a direction orthogonal to the opening / closing direction of the two cylinders.
Further, when one megaphone is separated into a plurality of cylinders, there is a problem in that sound is dispersed and sound is not transmitted well in the direction of the tip of the megaphone.

  The present invention has been made to solve such a conventional problem, and an object thereof is to provide a megaphone that can be used without considering the meeting direction.

In order to solve the above-mentioned problems, (1) the present invention has a plurality of hollow loudspeaker tubes formed so as to increase in thickness from one end to the other end, and the plurality of loudspeakers, and the overall shape is substantially conical. A connecting cylinder for gripping each one end so that there is a gap between each of the loudspeakers,
The loudspeaker is characterized in that an inner side of the other end is notched.

  (2) The loudspeaker of the present invention is characterized in that the cross section has a substantially sector shape with a recess at the center.

Furthermore, (3) the present invention comprises a hollow central loudspeaker tube that is shorter than the loudspeaker tube and formed thicker from one end to the other end,
The connecting tube grips one end portions of the plurality of loudspeaker tubes so that the central loudspeaker tube is arranged at the position of the central axis of the conical shape.

  According to the present invention, it is possible to provide a megaphone that can be used without considering the meeting direction.

It is a perspective view which shows schematic structure of the megaphone in 1st Embodiment. It is a side view which shows schematic structure of the megaphone in 1st Embodiment. It is a perspective view which shows schematic structure of a loudspeaker. It is sectional drawing which shows schematic structure of a connection pipe | tube. It is a perspective view which shows schematic structure of the megaphone in 2nd Embodiment. It is a side view which shows schematic structure of the megaphone in 2nd Embodiment. It is a perspective view which shows schematic structure of a center speaker tube and a speaker tube.

  Hereinafter, a megaphone according to an embodiment of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a perspective view showing a schematic configuration of a megaphone in the present embodiment, and FIG. 2 is a side view. FIG. 3 is a perspective view showing a schematic configuration of one loudspeaker.

  As shown in FIGS. 1 and 2, the megaphone 10 includes three loudspeaker tubes 21, 22, and 23 and a connecting tube 31.

  The loudspeaker tube 21 is hollow and is formed so as to become thicker from one end portion (hereinafter referred to as a base end portion) 21a toward the other end portion (hereinafter referred to as a distal end portion) 21b. The loudspeaker tube 21 includes a connected portion 21c disposed on the proximal end portion 21a side and a tube main body portion 21d disposed on the distal end portion 21b side. The cylinder main body portion 21d is integrally formed with the connected portion 21c in a state of being opened outward by a predetermined angle.

  The connected portion 21c has a sector shape with a cross section of about 120 degrees. Moreover, the to-be-connected part 21c has the groove part 21f on the outer side. Furthermore, the connected portion 21 c is held by the connecting tube 31 together with the connected portions of the sounding tube 22 and the sounding tube 23.

  The cylinder main body 21d has a substantially sector shape with a cross section having a recess in the center. Further, the cylinder main body 21d is provided with a notch 21e toward the proximal end 21a inside the distal end 21b. The notch 21e is trapezoidal and has a hypotenuse that extends twice toward the tip 21b.

The loudspeaker tube 22 and the loudspeaker tube 23 have the same configuration as the loudspeaker tube 21. Furthermore, in the present embodiment, each of the loudspeakers 21, 22, and 23 is formed of a synthetic resin colored in different colors (for example, red, blue, and yellow).
In the present embodiment, the fan-shaped central angles in the cross sections of the connected parts of the loudspeaker tube 21, the loudspeaker tube 22 and the loudspeaker tube 23 are set to about 120 degrees, but the present invention is not limited to this. About 360.

FIG. 4 is a cross-sectional view showing a schematic configuration of the connecting cylinder in the present embodiment.
As shown in FIG. 4, the connecting cylinder 31 has a cylindrical shape with a substantially circular cross section, and an annular protrusion 31 a is provided inside. The connecting tube 31 is configured to integrally hold the connected portions of the sounding tube 21, the sounding tube 22, and the sounding tube 23. Further, the connecting tube 31 is gripped so that the loudspeaker tube 21, the loudspeaker tube 22, and the loudspeaker tube 23 have a substantially conical shape as a whole, and there is a gap between the loudspeaker tubes 21, 22, 23.

  Specifically, the connected portions of the loudspeaker tube 21, the loudspeaker tube 22, and the loudspeaker tube 23 are inserted into the connecting tube 31 together. By combining the connected parts of the loudspeaker tube 21, the loudspeaker tube 22, and the loudspeaker tube 23, the cross section becomes substantially circular and can be inserted into the connecting tube 31. When the connected portions of the loudspeaker tube 21, the loudspeaker tube 22 and the loudspeaker tube 23 are inserted to predetermined positions of the connecting tube 31, the annular protrusions 31a of the connecting tube 31 are fitted into the groove portions of the connected portions, and the loudspeaker is expanded. The tube 21, the sound tube 22, the sound tube 23, and the connecting tube 31 are pivotally attached.

  Here, as described above, the tube main body portions of the loudspeaker tube 21, the loudspeaker tube 22, and the loudspeaker tube 23 are integrally formed with a predetermined angle open to the outside of each connected portion. Moreover, each cylinder main-body part is a substantially sector shape in which a cross section has a recessed part in the center part. Therefore, the loudspeaker tube 21, the loudspeaker tube 22, and the loudspeaker tube 23 are substantially conical as a whole. In addition, a hollow portion is formed in the middle of the loudspeaker tube 21, the loudspeaker tube 22, and the loudspeaker tube 23, that is, in the central portion of the megaphone 10. Further, the loudspeaker tube 21, the loudspeaker tube 22, and the loudspeaker tube 23 are each configured to have a gap.

  As described above, in the megaphone 10 according to the present embodiment, since the three loudspeaker tubes 21, 22, and 23 are connected by the connecting tube 31, any desired sound can be generated regardless of the direction of meeting. The megaphone 10 can be used without considering the meeting direction.

  Further, since the megaphone 10 is provided with notches in the tube main body portions of the loudspeaker tube 21, the loudspeaker tube 22, and the loudspeaker tube 23, the tip portion is like a single tube. Therefore, in the megaphone 10, sound is transmitted through the loudspeaker tubes 21, 22, and 23 from the root side where the connecting tube 31 is located to the tip, but is synthesized at the tip and emitted from the megaphone 10. The Rukoto. That is, the generated sound can be satisfactorily transmitted toward the tip of the megaphone 10 without being dispersed.

[Second Embodiment]
Next, a megaphone according to a second embodiment of the present invention will be described with reference to the drawings.

FIG. 5 is a perspective view showing a schematic configuration of the megaphone according to the present embodiment, and FIG. 6 is a side view.
As shown in FIGS. 5 and 6, the megaphone 11 according to the present embodiment includes a central loudspeaker tube 24, three loudspeaker tubes 25, 26, and 27, and a connecting tube 32.

FIG. 7 is a perspective view showing a schematic configuration of the central loudspeaker tube 24 and the loudspeaker tube 25 in the present embodiment.
As shown in FIG. 7, the central loudspeaker tube 24 is hollow and includes a coupled portion 24c and a tube main body portion 24d. Further, the central loudspeaker tube 24 is shorter than each of the three loudspeaker tubes 25, 26 and 27. Further, the coupled portion 24c and the cylinder main body portion 24d are integrally formed.
The cylinder main body portion 24d is formed so as to become thicker from the connecting portion with the connected portion 24c toward the distal end portion 24b.

The loudspeaker 25 has substantially the same configuration as the loudspeaker 21 in the above embodiment, and different points will be described.
The loudspeaker tube 25 includes a connected portion 25c and a tube main body portion 25d.

  The to-be-connected part 25c has a shape in which a central part of a sector having a cross section of about 120 degrees is cut out in a sector. The connected portion 25c is held by the connecting tube 32 together with the connected portions of the loudspeaker tube 26 and the loudspeaker tube 27, and also holds the connected portion 24c of the central loudspeaker tube 24.

  The cylinder main body 25d has a shape in which the inner periphery of the cross section is cut out in an arc shape. Further, the tube main body portion 25 d has a notch 25 e provided at the tip end portion 25 b, which is notched to the same position as the length of the central loudspeaker tube 24.

The loudspeaker tube 26 and the loudspeaker tube 27 have the same configuration as the loudspeaker tube 25.
Moreover, the connection cylinder 32 is the structure similar to the connection cylinder 31 in the said embodiment.

Therefore, the connected portions of the loudspeaker tube 25, the loudspeaker tube 26, and the loudspeaker tube 27 are inserted into the connecting tube 32 around the connected portion 24 c of the central loudspeaker tube 24. When the connected portions of the loudspeaker tube 25, the loudspeaker tube 26, and the loudspeaker tube 27 are inserted to predetermined positions of the connecting tube 32, the annular protrusions 32a of the connecting tube 32 are fitted into the groove portions of the connected portions, and the loudspeaking is performed. The tube 25, the sound tube 26, the sound tube 27, and the connecting tube 32 are pivotally attached.
Further, unevenness or the like is provided on the connected portion 24c of the central sound tube 24 and the connected portions of the sound tube 25, the sound tube 26, and the sound tube 27 so as to firmly prevent the central sound tube 24 from coming off. Anyway.

  As described above, in the megaphone 11 according to the present embodiment, the central loudspeaker 24 is connected to the center of the three loudspeakers 25, 26, and 27 by the connecting tube 32. Sound can be generated, and the megaphone 11 can be used without considering the meeting direction.

  Further, since the megaphone 11 is provided with notches in the tube main body portions of the loudspeaker tube 25, the loudspeaker tube 26, and the loudspeaker tube 27 up to the same position as the length of the central loudspeaker tube 24, one tube is formed at the tip portion. become that way. Therefore, the generated sound can be favorably transmitted toward the tip of the megaphone 11 without being dispersed.

  As described above, the megaphone according to the present invention has an effect that it can be used without considering the meeting direction, and is particularly useful as a megaphone used for sports support or the like.

10, 11 Megaphone 21, 22, 23 Loudspeaker tube 21a Base end portion 21b Tip portion 21c Connected portion 21d Tube body portion 21f Groove portion 24 Central speaker tube 24b Tip portion 24c Connected portion 24d Tube body portions 25, 26, 27 Loudspeaker tube 25b Tip portion 25c Connected portion 25d Tube body portion 31 Connection tube 31a Annular protrusion 32 Connection tube 32a Annular protrusion

Claims (3)

A plurality of hollow loudspeakers formed so as to become thicker from one end to the other end;
The plurality of loudspeaker tubes are generally conical in shape, and connecting tubes for gripping each of the one ends so that there is a gap between the loudspeaker tubes,
With
The megaphone characterized in that the inside of the other end of the loudspeaker is cut out.   The megaphone according to claim 1, wherein the loudspeaker has a substantially fan-shaped cross section with a concave portion in the center. Shorter than the loudspeaker tube, comprising a hollow central loudspeaker tube formed so as to become thicker from one end to the other end;
3. The megaphone according to claim 2, wherein the connecting tube grips one end of the plurality of loudspeakers such that the central loudspeaker is disposed at a position of the conical central axis.

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