Balloon and pump device for balloon

Abstract

To provide a balloon hard to be inflated with a human mouth.SOLUTION: A port cylinder 1A is attached to a port of a balloon. A lower face 4 of the port cylinder 1A is provided with an injection port 7. The port cylinder 1A includes a spacer part 20 forming an exhaled-air passing clearance S between an outer peripheral wall 3 of the port cylinder 1A and a person's mouth 60 holding the port cylinder 1A.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a balloon having a nozzle attached to its mouth, and to a pump device used to inflate the balloon.

[0002] In this specification and claims, for the sake of convenience, the up and down directions of the balloon are defined as the direction toward the mouth of the balloon as the down direction of the balloon, and the opposite direction as the up direction of the balloon, as shown in Figure 1. [Background technology]

[0003] For example, a jet balloon is known as a type of balloon that flies in the air by injecting air from inside the balloon. This jet balloon is used as a cheering item when watching sports such as baseball and soccer, and generally has a mouth tube with a substantially short cylindrical shape attached to the mouth of the jet balloon (see, for example, Patent Documents 1-3). An injection port is provided in the center of the lower surface of the mouth tube, and when inflating the balloon, a person holds the mouth tube in their mouth and blows (injects) their exhaled air (breath) into the balloon through the injection port of the mouth tube to inflate the balloon. Furthermore, the mouth tube is configured so that the air inside the balloon is ejected from the injection port during the flight of the balloon, producing a blowing sound.

[0004] Furthermore, sometimes air inside the balloon can leak out of the nozzle (more specifically, the nozzle's injection port) while inflating the balloon, or after inflating the balloon, the person becomes careless and the balloon slips out of their hands and flies away before the time is right to release it. To prevent this from happening, Patent Document 4 discloses a balloon launching device in which the nozzle of the balloon is attached to a nozzle attachment part provided on the launch pad, and in this state the person holds a blowing tube part provided on the launch pad in their mouth and blows air into the balloon to inflate it. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2001-218986 A [Patent Document 2] JP 2004-89518 A [Patent Document 3] JP 2015-13219 A [Patent Document 4] JP 2010-154910 A Summary of the Invention [Problem to be solved by the invention]

[0006] In recent years, there has been a trend to avoid human breath as a measure to prevent infection with various viruses such as the new coronavirus and influenza virus. However, with conventional balloons, the air sprayed from the balloon nozzle is human breath, which raises concerns about infection prevention.

[0007] The present invention has been made in consideration of the above-mentioned technical background, and an object of the present invention is to provide a balloon that is designed to be difficult to inflate using a human mouth, and a balloon pump device used to inflate the balloon. [Means for solving the problem]

[0008] The present invention provides the following means.

[0009] 1) A balloon having a nozzle attached to the mouth and an injection port provided on the underside of the nozzle, The mouthpiece is provided with a spacer portion that forms a gap for exhalation between the outer wall of the mouthpiece and the mouth of a person holding the mouthpiece.

[0010] 2) The nozzle includes a plurality of rib pieces that protrude outward from the outer peripheral wall and are spaced apart in the circumferential direction of the outer peripheral wall as the spacer portions, 2. The balloon according to claim 1, wherein the space between adjacent rib pieces in the circumferential direction of the outer wall is at least a part of the breath release gap.

[0011] 3) A balloon as described in paragraph 2 above, wherein the rib piece portion extends below the height position of the injection port of the nozzle.

[0012] 4) The nozzle includes one or more breath release frame portions as the spacer portion, each of which includes two rib pieces protruding outward from the outer peripheral wall and spaced apart in the circumferential direction of the outer peripheral wall, and a peripheral piece portion connecting the protruding ends of both the rib pieces and extending in the circumferential direction of the outer peripheral wall and spaced apart outward from the outer peripheral wall, 2. The balloon according to claim 1, wherein the inner space of the breath release frame is at least a part of the breath release gap.

[0013] 5) A balloon as described in paragraph 4 above, wherein the rib piece portion extends below the height position of the injection port of the nozzle.

[0014] 6) A balloon as described in paragraph 4 or 5 above, wherein the peripheral portion extends below the height position of the injection port of the nozzle.

[0015] 7) A balloon as described in any one of paragraphs 4 to 6 above, wherein the peripheral portion is positioned so that when the balloon is in flight, the peripheral portion receives an air flow that flows in the opposite direction to the flight direction of the balloon, causing the balloon to rotate around its axis.

[0016] 8) The balloon according to any one of items 4 to 7 above, wherein at least one of both side edges of the peripheral piece is formed with a fin piece protruding outwardly from the outer peripheral wall.

[0017] 9) The nozzle includes an exhalation frame portion as the spacer portion, the exhalation frame portion including a plurality of rib pieces that protrude outward from the outer peripheral wall and extend downward below the height position of the injection port of the nozzle, and are spaced apart from each other in the circumferential direction of the outer peripheral wall, and a peripheral piece that connects lower ends of the plurality of rib pieces and extends outwardly and downwardly from the outer peripheral wall, over the entire circumferential direction of the outer peripheral wall, 2. The balloon according to claim 1, wherein the space between adjacent rib pieces in the circumferential direction of the outer wall is the breath release gap.

[0018] 10) A balloon as described in paragraph 9 above, wherein the outer diameter of the peripheral portion is set to be larger than the maximum diameter of the mouth of a person holding the nozzle when the mouth is open.

[0019] 11) The nozzle is attached to a nozzle attachment part provided on a blowing part of a balloon pump device when inflating a balloon, A plurality of the spacer portions are arranged at intervals in the circumferential direction of the outer circumferential wall, A balloon as described in any one of items 1 to 10 above, wherein a locking portion is formed in the portion of the outer wall between adjacent spacer portions in the circumferential direction, to which a locking piece provided on the pump tool can be freely engaged and detached to hold the nozzle attached to the nozzle attachment portion.

[0020] 12) A balloon pump device for injecting a fluid into a balloon to inflate the balloon described in the preceding paragraph 11, a pump device body having a fluid chamber formed therein; a blowout section for blowing out fluid from the fluid chamber; a nozzle attachment section provided on the blowout section in communication with the fluid chamber and to which a nozzle of a balloon is attached when injecting fluid into the balloon; and a locking piece for detachably locking the nozzle attached to the nozzle attachment section, The locking piece locks a locked portion formed in a portion between adjacent spacer portions in the circumferential direction on the outer wall of the nozzle. Effect of the Invention

[0021] The present invention provides the following advantages.

[0022] In the preceding paragraph 1, the nozzle attached to the mouth of the balloon is provided with a spacer portion which forms an air escape gap, so that even if a person holds the nozzle in their mouth and tries to blow air into the balloon, the air escapes through the air escape gap, making it difficult to inflate the balloon with the mouth.

[0023] In the preceding paragraph 2, the nozzle has a plurality of rib pieces as spacer portions, and the space between adjacent rib pieces in the circumferential direction of the outer wall is at least a part of the breath release gap, so that the breath release gap can be formed with a simple configuration.

[0024] In the above item 3, the rib piece extends below the height of the injection port of the nozzle, making it difficult to hold the nozzle in the mouth. This makes it even more difficult to inflate the balloon with the mouth.

[0025] In the above item 4, the nozzle includes one or more breath release frame parts as spacers, and the inner space of the breath release frame parts is at least a part of the breath release gap, so that the breath release gap can be reliably formed. Furthermore, the two rib pieces in the breath release frame part are reinforced by the peripheral piece part, so that the breath release gap can be reliably secured.

[0026] In the above item 5, the rib piece extends below the height of the injection port of the nozzle, making it difficult to hold the nozzle in the mouth. This makes it even more difficult to inflate the balloon with the mouth.

[0027] In the above item 6, the peripheral portion extends below the height of the injection port of the nozzle, making it difficult for the nozzle to be held in the mouth. This makes it even more difficult to inflate the balloon with the mouth.

[0028] In the previous paragraph 7, the balloon rotates around its axis while flying through the air, making the balloon more noticeable and increasing interest.

[0029] In the above paragraph 8, at least one of the two side edges of the peripheral piece has a fin protruding outward from the outer wall, making it even more difficult for the mouthpiece to be held in the mouth. Furthermore, when the balloon flies in the air, the fin acts as a rectifying wing that rectifies the air flow near the side edge of the peripheral piece, contributing to extending the flight distance of the balloon.

[0030] In the above paragraph 9, the rib piece portion extends below the height position of the injection port of the nozzle, which makes it even more difficult to hold the nozzle in the mouth. This makes it even more difficult to inflate the balloon with the mouth. Furthermore, since the multiple rib pieces are reinforced by the peripheral piece portion, a gap for exhalation can be reliably secured.

[0031] In the preceding paragraph 10, the outer diameter of the peripheral portion is set to be larger than the maximum diameter of the mouth of a person holding the mouthpiece when the mouth is open, thereby preventing a person from holding the mouthpiece in their mouth and therefore preventing infection of a person through saliva adhering to the mouthpiece.

[0032] In the above-mentioned paragraph 11, when inflating a balloon, the nozzle can be attached to the nozzle attachment part of the pump tool and the locking piece can be locked to the locked part of the nozzle, thereby making it possible to hold the nozzle in the nozzle attachment part. This makes it possible to easily inflate a balloon using the pump tool even if the balloon's nozzle is equipped with a spacer part.

[0033] In the above paragraph 12, a balloon pump device suitable for use in inflating a balloon according to the present invention can be provided. [Brief description of the drawings]

[0034] [Figure 1] FIG. 1 is a front view showing a balloon with a nozzle attached to the mouth according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of one side of the mouth and nozzle of a balloon. [Diagram 3] FIG. 3 shows the same nozzle, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 4] FIG. 4 is a perspective view of a pump device used to inflate a balloon. [Diagram 5] FIG. 5 is a perspective view of the pump device with the nozzle attached to the receiving tube (the nozzle attachment portion). [Figure 6] FIG. 6 shows a nozzle according to a second embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 7] FIG. 7 shows a nozzle according to a third embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 8] FIG. 8 shows a nozzle according to a fourth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 9] FIG. 9 shows a nozzle according to a fifth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 10] FIG. 10 shows a nozzle according to a sixth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 11] FIG. 11 shows a nozzle according to a seventh embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 12] FIG. 12 shows a nozzle according to an eighth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 13] FIG. 13 shows a nozzle according to a ninth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 14] FIG. 14 shows a nozzle according to a tenth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 15] FIG. 15 shows a nozzle according to an eleventh embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 16] FIG. 16 shows a nozzle according to a twelfth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 17]FIG. 17 shows a nozzle according to the thirteenth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 18] FIG. 18 shows a nozzle according to a fourteenth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 19] FIG. 19 shows a nozzle according to a fifteenth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 20] FIG. 20 shows a nozzle according to the sixteenth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. [Figure 21] FIG. 21 shows a nozzle according to the seventeenth embodiment of the present invention, where (a) is a plan view, (b) is a perspective view seen from diagonally above, and (c) is a perspective view seen from diagonally below. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] Several embodiments of the invention will now be described with reference to the drawings.

[0036] First Embodiment As shown in Fig. 1, a balloon 50 according to the first embodiment of the present invention is a so-called jet balloon. That is, this balloon 50 (balloon body) is made of rubber (including natural rubber, synthetic rubber, etc.) whose upper end (tip) locally bulges outward and expands into a rod shape when air as a fluid is injected into the balloon 50, and the mouth 1A of the first embodiment, which is substantially a short cylinder, is attached to a mouth 52 formed at the lower end of the balloon 50. The reference character P in the figure indicates the axis of the balloon 50.

[0037] 2, the nozzle 1A has a nozzle body 2 made of synthetic resin (polypropylene (PP), polyethylene (PE), etc.) that is open upward, and further has an inner cylinder 10 made of synthetic resin (PP, PE, etc.) that is open downward. The inner cylinder 10 is fitted into the outer peripheral wall 3 of the nozzle body 2 as described below.

[0038] The mouthpiece body 2 of the mouthpiece 1A has a vertical length (height) in the range of, for example, about 5 mm to 15 mm, and an outer diameter in the range of, for example, about 15 mm to 30 mm.

[0039] Moreover, the lower end 8 of the mouth cylinder 1A (mouth cylinder main body 2) is formed to have a slightly smaller diameter, and the outer diameter of the lower end 8 is set in the range of, for example, about 13 mm to 27 mm.

[0040] Inlets 7, 7 having a circular cross section are provided at the center of the bottom wall 5 of the nozzle body 2 and at the center of the top wall 12 of the inner cylinder 10, penetrating vertically so as to communicate with the inside of the balloon. When inflating the balloon 50, air is injected into the balloon 50 from the inlets 7, 7, and when the balloon 50 flies, the air inside the balloon 50 is ejected from the inlets 7, 7. Furthermore, the nozzle 1A is configured so that the air inside the balloon 50 is ejected from the inlets 7, 7 to produce a blowing sound.

[0041] The outer peripheral wall 11 of the inner cylinder 10 is fitted from above into the outer peripheral wall 3 of the nozzle body 2, thereby integrating the inner cylinder 10 with the nozzle body 2. Furthermore, in this state, the mouth wrap portion 53 of the mouth 52 of the balloon 50 is sandwiched between the outer peripheral wall 3 of the nozzle body 2 and the outer peripheral wall 11 of the inner cylinder 10, thereby attaching the nozzle 1A (more specifically, the nozzle body 2 of the nozzle 1A) to the mouth 52.

[0042] That is, in a state where the outer peripheral wall 11 of the inner cylinder 10 is fitted into the outer peripheral wall 3 of the mouth-tube main body 2, the engaging projection 13 formed in an outward protruding manner at the lower end of the outer peripheral wall 11 of the inner cylinder 10 engages with the recess 6 formed at the lower end of the inner peripheral surface of the outer peripheral wall 3 of the mouth-tube main body 2, thereby maintaining the outer peripheral wall 11 of the inner cylinder 10 fitted into the outer peripheral wall 3 of the mouth-tube main body 2. Furthermore, in this state, the mouth roll part 53 of the mouth part 52 is sandwiched between the outer peripheral wall 3 of the mouth-tube main body 2 and the outer peripheral wall 11 of the inner cylinder 10, and the mouth roll part 53 is prevented from slipping out from between the outer peripheral walls 3, 11 by the anti-slip rib part 14 formed in an outward protruding manner at the upper end of the outer peripheral wall 11 of the inner cylinder 10.

[0043] In this first embodiment, the outer peripheral wall 3 of the nozzle 1A is made of the outer peripheral wall 3 of the nozzle body 2 described above, and the lower surface 4 of the nozzle 1A is made of the lower surface of the lower wall 5 of the nozzle body 2 described above, and the lower surface 4 is formed approximately horizontally. Note that nozzles 1B to 1Q of other embodiments described later are also formed in the same manner.

[0044] In addition, when the nozzle 1A is attached to the mouth 52 of the balloon 50, the outer peripheral wall 3 of the nozzle 1A is exposed to the outside of the mouth 52. The lower surface 4 and the injection port 7 of the nozzle 1A are located at approximately the same height as each other, and are also located at approximately the same height as the lower end position of the outer peripheral wall 3.

[0045] 3(a)-(c) are diagrams for explaining the nozzle 1A, and the balloon body is omitted in these diagrams to make it easier to understand the configuration of the nozzle 1A. The balloon body is also omitted in Figs. 6-21 which show nozzles 1B-1Q of other embodiments described later.

[0046] As shown in FIG. 3(a), the mouthpiece 1A is provided with a spacer portion 20 on the outside of the outer peripheral wall 3 of the mouthpiece 1A (i.e., the outer peripheral wall 3 of the mouthpiece body 2) that forms an exhalation gap S between the outer peripheral wall 3 and the mouth 60 (shown by a dotted line) of a person holding the mouthpiece 1A.

[0047] Here, the breath escape gap S refers to the gap S through which breath escapes when a person holds the mouthpiece 1A in their mouth (more specifically, their lips) 60 to inflate the balloon 50 and injects the person's breath (breath) into the balloon 50 through the injection port 7.

[0048] 3(a) to 3(c), the nozzle 1A is provided with a plurality of breath release frame portions 30 as the spacer portion 20, each of which is made up of two thin rib piece portions 21, 21 that protrude outward from the outer peripheral wall 3 of the nozzle 1A and are arranged spaced apart in the circumferential direction of the outer peripheral wall 3, and a thin peripheral piece portion 23 that connects the protruding ends of both the rib piece portions 21, 21 and extends in the circumferential direction of the outer peripheral wall 3, spaced outward from the outer peripheral wall 3. In this first embodiment, the number of breath release frame portions 30 is two.

[0049] The length of protrusion of the rib piece 21 outward from the outer peripheral wall 3 is not limited, but is preferably within a range of about 1 mm to 10 mm. The thickness of the rib piece 21 and the peripheral piece 23 is not limited, but is preferably within a range of about 0.5 mm to 1.5 mm.

[0050] The two air release frame portions 30, 30 have the same shape and dimensions. In the air release frame portion 30, the radius of curvature of the peripheral piece portion 23 is set to be substantially the same as or slightly larger than the radius of curvature of the outer peripheral wall 3.

[0051] The two air release frames 30, 30 are disposed at equal intervals around the entire circumference of the outer circumferential wall 3, and more specifically, since there are two air release frames 30, the two air release frames 30, 30 are disposed on opposite sides of the outer circumferential wall 3. Therefore, the portions between the air release frames 30, 30 (i.e., the spacer portions 20, 20) adjacent to each other in the circumferential direction on the outer circumferential wall 3 are also disposed on opposite sides of the outer circumferential wall 3. The upper end surface 3a of the portion on the outer circumferential wall 3 serves as an engaged portion x to which an engaging piece 80 of a pump tool 70, which will be described later, is engaged in a detachable manner.

[0052] The inner space 31 of the breath release frame 30 (i.e., the space surrounded by the two rib pieces 21, 21 and the peripheral piece 23 constituting the breath release frame 30 on the outside of the outer peripheral wall 3) is part of the breath release gap S. The remaining part of the breath release gap S is made up of a space 32 between the breath release frames 30, 30 adjacent to each other in the circumferential direction of the outer peripheral wall 3 on the outside of the outer peripheral wall 3.

[0053] Therefore, in the mouthpiece 1A of the first embodiment, the breath release gap S is composed of the inner space 31 of the two breath release frames 30 and the space 32 between the two breath release frames 30.

[0054] More specifically, in the breath release frame 30, the rib piece 21 is formed integrally with the outer peripheral wall 3 and extends slightly downward from the same height as the outer peripheral wall 3 to the same height as the underside of the nozzle 1A and the injection port 7 or to a height position slightly higher (see FIG. 2). The peripheral piece 23 is formed integrally with both rib pieces 21, 21 so as to connect the parts of the protruding ends of both rib pieces 21, 21 that are at the same height as the outer peripheral wall 3, and extends downward from the same height as the outer peripheral wall 3 to the lower end positions of both rib pieces 21, 21. Therefore, both rib pieces 21, 21 and the peripheral piece 23 do not extend below the height of the injection port 7 of the nozzle 1A, and more specifically, they extend to the same height as the injection port 7 of the nozzle 1A or to a height position slightly higher.

[0055] According to a balloon 50 having a nozzle 1A of such configuration attached to its mouth portion 52, the nozzle 1A is provided with a spacer portion 20 which forms an exhalation gap S between the outer wall 3 and the person's mouth 60. Therefore, even if a person holds the nozzle 1A in their mouth 60 from the outside of the outer wall 3 and attempts to blow exhaled air into the balloon 50 through the injection port 7 of the nozzle 1A, most of the exhaled air will not flow into the injection port 7 but will escape through the exhalation gap S, making it difficult to inflate the balloon 50 with the mouth.

[0056] Furthermore, the mouthpiece 1A is provided with an air release frame 30 as the spacer portion 20, and the inner space 31 of the air release frame 30 is at least a part of the air release gap S, so that the air release gap S can be reliably formed.

[0057] Furthermore, since the breath release frame 30 has a peripheral piece 23 extending in the circumferential direction of the outer wall 3, a person is less likely to feel pain in the lips even when holding the mouthpiece 1A in their mouth, and pain can be reduced even if the breath release frame 30 (spacer portion 20) of the mouthpiece 1A hits the person's body when the balloon 50 is flying.

[0058] Furthermore, since the two rib pieces 21, 21 in the breath release frame 30 are reinforced by the peripheral piece 23, the breath release gap S can be reliably secured.

[0059] When inflating the balloon 50, it is preferable to use a balloon pump device 70 shown in Figures 4 and 5 to inflate the balloon 50. In Figure 5, in order to make it easier to understand the state in which the pump device 70 is engaged with the nozzle 1A by the engaging pieces 80, 80, the nozzle 1A of the balloon 50 is shown but the balloon body is omitted.

[0060] 4 and 5, the pump device 70 is made of synthetic resin (PP, PE, etc.) and injects air as a fluid (e.g., liquid, gas) into the balloon 50. The pump device 70 includes a pump device body 71 with an air chamber 75 formed therein as a fluid chamber, a blowing section 77 that blows out air from the air chamber 75, a receiving tube 78 that is connected to the blowing section 77 and serves as a nozzle mounting section into which the lower end 8 of the nozzle 1A is fitted in a substantially sealed manner (i.e., substantially airtight and liquidtight) when injecting air into the balloon 50, a pair of locking pieces 80, 80 that detachably lock the nozzle 1A fitted into the receiving tube 78, and a suction section 76 that draws outside air into the air chamber 75. The lower end 8 of the nozzle 1A that is fitted into the receiving tube 78 is formed to have a slightly smaller diameter as described above.

[0061] More specifically, the pump device 70 is a type of human-powered pump device (more specifically, a manual pump device), and specifically, is of a hand-operated piston type.

[0062] That is, the pump device 70 includes a cylinder 72 made of synthetic resin (PP, PE, etc.) having a generally oval cross section, and a piston (not shown) made of synthetic resin (PP, PE, etc.) loaded so as to be capable of reciprocating movement within the cylinder 72, as a pump device body 71. A piston rod 74 protrudes rearward from the piston, and a grip portion 74a is integrally formed with the rear end portion of the piston rod 74. A suction portion 76 and a blowing portion 77 (a receiving tube 78) are provided in parallel on a front wall 72a of the cylinder 72, each of which communicates with an air chamber 75 and is spaced apart from each other.

[0063] A first check valve (not shown) that allows air to flow in the blowing direction A1 and blocks air from flowing in the suction direction B1 is provided inside the blowing section 77. A second check valve (not shown) that allows air to flow in the suction direction B2 and blocks air from flowing in the blowing direction A2 is provided inside the suction section 76.

[0064] The pair of locking pieces 80, 80 are provided on the blowing section 77 via elastic support legs 84, 84 extending inward from a longitudinal intermediate section and a base end section 82 of each locking piece 80 so that they face each other substantially parallel to each other outside the receiving tube 78 and the tips of both locking pieces 80, 80 can move close to and away from each other at an upper position of the receiving tube 78. A locking claw 83 is formed at the tip of each locking piece 80, protruding inward from the outer circumferential surface position of the receiving tube 78 at an upper position of the receiving tube 78.

[0065] When the lower end 8 of the mouthpiece 1A is fitted into the receiving tube 78, the outer peripheral surface of the outer wall 3 of the mouthpiece 1A is approximately flush with the outer peripheral surface of the receiving tube 78, and the engaged portion x of the mouthpiece 1A engaged by the engaging piece 80 (more specifically, the engaging claw 83 of the engaging piece 80) is the upper end surface 3a of the portion between the circumferentially adjacent exhalation frame portions 30, 30 (spacer portions 20, 20) on the outer wall 3 of the mouthpiece 1A (see Figure 5), as described above.

[0066] When the balloon 50 is inflated using this pump tool 70, the lower end 8 of the mouth tube 1A is fitted into the receiving tube 78 of the pump tool 70 in a substantially sealed state. During this process, the outer peripheral wall 3 of the mouth tube 1A abuts against both locking claws 83, 83 from the front, and the support legs 84 are elastically deformed so that the tips of the locking pieces 80, 80 move away from each other, and when the lower end 8 of the mouth tube 1A is completely fitted into the receiving tube 78, the elastic restoring force of the support legs 84 moves the tips of the locking pieces 80, 80 toward each other to their original positions, and the locking claws 83, 83 lock the locked parts x, x of the mouth tube 1A. This maintains the state in which the mouth tube 1A is fitted into the receiving tube 78 as shown in FIG. 5.

[0067] Next, by holding the cylinder 72 of the pump device 70 with one hand and holding the holding portion 74a of the piston rod 74 with the other hand and moving the piston forward, the air in the air chamber 75 is blown out from the inside of the receiving tube 78 through the first check valve of the blowing portion 77 and the air is injected into the balloon 50 through the injection port 7 of the nozzle tube 1A, and then by moving the piston that moved forward in the reverse direction, the outside air is sucked into the air chamber 75 from the suction portion 76 through the second check valve of the suction portion 76.

[0068] By repeatedly performing such reciprocating motion of the piston, a large amount of air can be injected into the balloon 50, causing the balloon 50 to inflate significantly.

[0069] When the inflated balloon 50 is to be released, as shown in Fig. 5, the front wall 72a of the cylinder 72 of the pump device 70 is turned upward, and the base ends 82, 82 of both locking pieces 80, 80 are simultaneously pressed inward with the fingers, so that both locking claws 83, 83 simultaneously disengage from the locked parts x, x of the nozzle 1A, and the nozzle 1A is released from the attachment state of the receiving tube 78. This causes the balloon 50 to fly into the air by the air jet from the injection port 7 of the nozzle 1A.

[0070] Therefore, even if the mouth 1A of the balloon 50 is equipped with the spacer portion 20, the balloon 50 can be easily inflated by using this pump device 70, and the inflated balloon 50 can be easily launched.

[0071] The nozzle attached to the mouth of the balloon according to the present invention is not limited to the nozzle 1A shown in the first embodiment, but may be, for example, nozzles 1B to 1Q of the following second to seventeenth embodiments shown in Figures 6 to 21. In these figures, elements that perform the same functions as the nozzle 1A of the first embodiment are given the same reference numerals. Below, these nozzles 1B to 1Q will be described, focusing on the differences from the nozzle 1A of the first embodiment.

[0072] <Second embodiment> 6(a) to 6(c) according to the second embodiment of the present invention, like the nozzle 1A of the first embodiment, has two breath release frames 30, 30 as the spacer portion 20. Both breath release frames 30, 30 have the same shape and dimensions as each other.

[0073] In the breath release frame 30, both rib pieces 21, 21 protrude outward from the outer peripheral wall 3 of the nozzle 1B, and extend slightly downward from the same height as the outer peripheral wall 3 below the height of the injection port 7 of the nozzle 1B. The peripheral piece 23 is integrally formed with both rib pieces 21, 21 so as to connect the parts of the protruding ends of both rib pieces 21, 21 that are at the same height as the outer peripheral wall, and extends from the same height as the outer peripheral wall 3 to the lower end positions of both rib pieces 21, 21. Therefore, both rib pieces 21, 21 and the peripheral piece 23 extend slightly downward from the height of the injection port 7 of the nozzle 1B, and specifically, extend, for example, about 5 mm to 30 mm below the height of the injection port 7 of the nozzle 1B.

[0074] According to this nozzle 1B, the rib pieces 21, 21 extend downward from the height position of the injection port 7 of the nozzle 1B, making it difficult to hold the nozzle 1B in the mouth. This makes it even more difficult to inflate the balloon 50 with the mouth.

[0075] Furthermore, the peripheral portion 23 also extends downward from the height position of the injection port 7 of the mouthpiece 1B, making it even more difficult to hold the mouthpiece 1B in the mouth. This makes it even more difficult to inflate the balloon 50 with the mouth.

[0076] <Third embodiment> 7(a) to 7(c), a nozzle 1C according to a third embodiment of the present invention is provided with four breath release frame portions 30 as the spacer portion 20, and in this nozzle 1C, the breath release gap S is made up of the inner spaces 31 of the four breath release frame portions 30 and the spaces 32 between the four breath release frame portions 30. These breath release frame portions 30 have the same shape and dimensions as one another.

[0077] These air release frames 30 are disposed at equal intervals around the entire circumferential direction of the outer circumferential wall 3 of the mouthpiece 1C. The configuration of the air release frame 30 is the same as that of the mouthpiece 1B of the second embodiment.

[0078] This mouthpiece 1C has the same advantages as the mouthpiece 1B of the second embodiment.

[0079] <Fourth embodiment> The nozzle 1D of the fourth embodiment of the present invention shown in Figures 8(a) to (c) is the same as the nozzle 1C of the third embodiment described above, except that the radius of curvature of the peripheral piece portion 23 of the breath release frame portion 30 is different from that of the nozzle 1C of the third embodiment described above.

[0080] That is, in the breath release frame 30 of the mouthpiece 1D, the peripheral piece 23 extends in the circumferential direction of the outer peripheral wall 3 of the mouthpiece 1D, but the radius of curvature of the peripheral piece 23 is set to be slightly smaller than the radius of curvature of the outer peripheral wall 3. Therefore, the peripheral piece 23 bulges outward in a cross-sectional arc shape more significantly than the peripheral piece 23 of the mouthpiece 1C of the third embodiment. This makes it even more difficult to hold the mouthpiece 1D in the mouth, and makes it possible to form a breath release gap S larger than the breath release gap S of the mouthpiece 1C of the third embodiment.

[0081] <Fifth embodiment> 9(a) to 9(c) according to the fifth embodiment of the present invention, the spacer portion 20 is made up of a plurality of rib pieces 21 that protrude outward from the outer peripheral wall 3 of the nozzle 1E and are spaced apart in the circumferential direction of the outer peripheral wall 3. More specifically, the number of rib pieces 21 is 10. These rib pieces 21 have the same shape and dimensions as each other.

[0082] In this nozzle 1E, a space 22 between adjacent rib pieces 21, 21 in the circumferential direction of the outer circumferential wall 3 serves as a breath release gap S.

[0083] Here, for ease of explanation, five of the ten rib piece portions 21 that are adjacent to each other are defined as a first rib piece group 21A, and the remaining five rib piece portions 21 are defined as a second rib piece group 21B. The rib piece portions 21 of the first rib piece group 21A are arranged at equal intervals in the circumferential direction on one side of the outer peripheral wall 3, and the rib piece portions 21 of the second rib piece group 21B are arranged at equal intervals in the circumferential direction on the other side of the outer peripheral wall 3. Furthermore, the first rib piece group 21A and the second rib piece group 21B are arranged at a greater distance from each other than the distance between the adjacent rib piece portions 21, 21 in each rib piece group. An upper end surface 3a of a portion of the outer peripheral wall 3 between the first rib piece group 21A and the second rib piece group 21B is defined as an engaged portion x to which an engaging piece 80 of the pump tool 70 is engaged.

[0084] The rib piece 21 protrudes outward from the outer peripheral wall 3 and extends downward from the lower surface 4 of the nozzle 1E from the same height position as the outer peripheral wall 3; specifically, the rib piece 21 extends downward from the height position of the injection port 7 of the nozzle 1E, for example, by approximately 5 mm to 30 mm.

[0085] With this mouthpiece 1E, when the mouthpiece 1E is held in the mouth, a breath release gap S is formed between adjacent rib pieces 21, 21, that is, as described above, the space 22 between adjacent rib pieces 21, 21 serves as the breath release gap S, so that even if one holds the mouthpiece 1E in the mouth and tries to blow breath into the balloon 50 through the injection port 7 of the mouthpiece 1E, most of the breath does not flow into the injection port 7 but escapes through the breath release gap S. Therefore, the breath release gap S can be formed with a simple structure.

[0086] Furthermore, since the rib piece 21 extends below the height position of the injection port 7 of the mouthpiece 1E, it is difficult to hold the mouthpiece 1E in the mouth. This makes it even more difficult to inflate the balloon 50 with the mouth.

[0087] Sixth embodiment 10(a) to 10(c) according to the sixth embodiment of the present invention, the spacer portion 20 is made up of a plurality of rib pieces 21 that protrude outward from the outer peripheral wall 3 of the nozzle 1F and are arranged at equal intervals all around the circumferential direction of the outer peripheral wall 3. More specifically, the number of rib pieces 21 is six. These rib pieces 21 have the same shape and dimensions as each other.

[0088] In this nozzle 1F, the space 22 between the circumferentially adjacent rib pieces 21, 21 of the outer peripheral wall 3 is formed as an exhalation gap S, and the upper end surface 3a of the portion between the circumferentially adjacent rib pieces 21, 21 of the outer peripheral wall 3 is formed as an engaging portion x to which the engaging piece 80 of the pump tool 70 is engaged.

[0089] The rib piece 21 protrudes outward from the outer peripheral wall 3 and extends from the same height position as the outer peripheral wall 3 downward below the height position of the injection port 7 of the nozzle 1F; specifically, the rib piece 21 extends, for example, about 5 mm to 30 mm downward below the height position of the injection port 7 of the nozzle 1F.

[0090] This mouthpiece 1F has the same advantages as the mouthpiece 1E of the fifth embodiment.

[0091] Seventh embodiment 11(a) to 11(c) according to the seventh embodiment of the present invention, the nozzle 1G includes two air release frames 30, 30 as the spacer portion 20, like the nozzle 1A of the first embodiment. These air release frames 30, 30 have the same shape and dimensions as each other.

[0092] In the breath release frame 30, both rib pieces 21, 21 protrude outward from the outer peripheral wall 3 of the nozzle 1G and are disposed at approximately the same height as the outer peripheral wall 3, so that the rib piece 21 is disposed at a height position above the height position of the injection port 7 of the nozzle 1G. The peripheral piece 23 is integrally formed with both rib pieces 21, 21 so as to connect the parts of the protruding ends of both rib pieces 21, 21 that are at the same height position as the outer peripheral wall 3, and extends from the same height position as the outer peripheral wall 3 to a position lower than the height position of the injection port 7 of the nozzle 1G and slightly inclined outward in the downward direction, specifically, the peripheral piece 23 extends, for example, about 1 cm to 3 cm below the height position of the injection port 7 of the nozzle 1G. The angle of inclination of the peripheral piece 23 outward in the downward direction is not limited, and is, for example, in the range of about 3° to 30°.

[0093] Furthermore, substantially in the center of the peripheral piece 23, a plurality of (five in detail) slit-shaped holes 23a extending in the up-down direction are provided at intervals in the width direction of the peripheral piece 23.

[0094] According to this nozzle 1G, the peripheral portion 23 extends downward from the height position of the injection port 7 of the nozzle 1G, making it difficult to hold the nozzle 1G in the mouth. This makes it even more difficult to inflate the balloon 50 with the mouth.

[0095] Furthermore, the slit-shaped holes 23a in the peripheral piece 23 reduce the weight of the mouthpiece 1G, which increases the flight distance of the balloon 50. Furthermore, when the mouthpiece 1G is held shallowly in the mouth, the holes 23a also function as an exhalation hole in the peripheral piece 23, making it even more difficult to inflate the balloon 50 with the mouth.

[0096] Eighth embodiment 12(a) to 12(c) according to the eighth embodiment of the present invention, fin pieces 25 are integrally formed on both side edges of the peripheral piece 23 of the breath release frame 30, and extend from the upper end to the lower end of the peripheral piece 23. The other configurations are substantially the same as those of the nozzle 1G of the seventh embodiment.

[0097] This nozzle 1H has the same advantages as the nozzle 1G of the seventh embodiment, and furthermore, since fin pieces 25 are formed on both side edges of the peripheral piece 23, it is even more difficult to hold the nozzle 1H in the mouth. Moreover, when the balloon 50 flies in the air, the fin pieces 25 act as rectifying wings that rectify the flow of air near the side edges of the peripheral piece 23, and the flying distance of the balloon 50 can be increased.

[0098] In the present invention, it is preferable that the fin portion 25 is formed on each of both side edges of the peripheral portion 23 as in the eighth embodiment, but this is not limited to this and the fin portion 25 may also be formed on only one of the both side edges of the peripheral portion 23.

[0099] <Ninth embodiment> 13(a)-(c), a nozzle 1I according to a ninth embodiment of the present invention does not have a slit-shaped hole 23a in the peripheral piece 23 as in the nozzle 1H of the eighth embodiment, but has a generally U-shaped notch 23c that opens downward from a position roughly the same height as the injection port 7 of the nozzle 1I in the middle in the width direction of the peripheral piece 23. The rest of the configuration of this nozzle 1I is the same as that of the nozzle 1H of the eighth embodiment.

[0100] This mouthpiece 1I has the same advantages as the mouthpiece 1H of the eighth embodiment, and the notch 23c reduces the weight of the mouthpiece 1I. Furthermore, when the mouthpiece 1I is held shallowly in the mouth, the notch 23c also functions as an exhalation hole provided in the peripheral portion 23, making it even more difficult to inflate the balloon 50 with the mouth.

[0101] Tenth embodiment 14(a)-(c), the nozzle 1J according to the tenth embodiment of the present invention does not have a slit-shaped hole 23a in the peripheral piece 23 as in the nozzle 1H of the eighth embodiment, but has a substantially square hole 23b in a region from substantially the same height as the injection port 7 of the nozzle 1J in the widthwise middle of the peripheral piece 23 to substantially the middle in the up-down direction, and further has a substantially U-shaped notch 23c that opens downward through a reinforcing band 23d extending in the circumferential direction in a portion below the hole 23b in the widthwise middle of the peripheral piece 23. The other configurations of this nozzle 1J are the same as those of the nozzle 1H of the eighth embodiment.

[0102] This mouth tube 1J has the same advantages as the mouth tube 1H of the eighth embodiment, and the holes 23b and the notches 23c make the mouth tube 1J lighter. Furthermore, when the mouth tube 1J is held shallowly in the mouth, the holes 23b and the notches 23c also function as breath escape holes in the peripheral piece 23, making it even more difficult to inflate the balloon 50 with the mouth. Furthermore, the peripheral piece 23 is reinforced by the reinforcing band 23d, and has high strength.

[0103] <Eleventh embodiment> 15(a)-(c), a nozzle 1K according to an eleventh embodiment of the present invention does not have a slit-shaped hole 23a in the peripheral piece 23 as in the nozzle 1H of the eighth embodiment, but has a substantially rectangular hole 23b in the widthwise middle of the peripheral piece 23, and a reinforcing band 23d extending in the circumferential direction below the hole 23b in the peripheral piece 23. The other configurations of this nozzle 1K are the same as those of the nozzle 1H of the eighth embodiment.

[0104] This mouth tube 1K has the same advantages as the mouth tube 1H of the eighth embodiment, and the hole 23b reduces the weight of the mouth tube 1K. Furthermore, when the mouth tube 1K is held shallowly in the mouth, the hole 23b also functions as an exhalation hole provided in the peripheral piece 23, making it even more difficult to inflate the balloon 50 with the mouth.

[0105] Furthermore, the peripheral piece 23 is reinforced by the reinforcing band 23d, and has high strength. Moreover, since there is no downward protrusion at the lower end of the peripheral piece 23, pain can be reduced even if the lower end of the peripheral piece 23 of the nozzle 1K hits the human body when the balloon 50 is in flight.

[0106] <Twelfth embodiment> 16(a) to 16(c) according to the twelfth embodiment of the present invention is provided with a plurality of (four in detail) rib piece portions 21 as a spacer portion 20, which protrude outward from the outer peripheral wall 3 of the nozzle 1L and are provided at equal intervals all around the circumferential direction of the outer peripheral wall 3. These rib piece portions 21 have the same shape and dimensions as each other.

[0107] In this nozzle 1L, the space 22 between the rib pieces 21, 21 adjacent to each other in the circumferential direction of the outer circumferential wall 3 is formed as the breath release gap S, similar to the nozzles 1E, 1F of the fifth and sixth embodiments described above.

[0108] Furthermore, the rib pieces 21 extend from the same height position as the outer peripheral wall 3 below the height position of the injection port 7 of the nozzle 1L and at a slight outward inclination in the downward direction, specifically, the rib pieces 21 extend, for example, about 1 cm to 3 cm below the height position of the injection port 7 of the nozzle 1L. The outward inclination angle of the rib pieces 21 in the downward direction is not limited and is, for example, in the range of about 3° to 30°.

[0109] According to this nozzle 1L, the rib piece 21 extends downward from the height position of the injection port 7 of the nozzle 1L, making it difficult to hold the nozzle 1L in the mouth. This makes it even more difficult to inflate the balloon 50 with the mouth.

[0110] Furthermore, since the rib piece 21 does not have a peripheral piece, the mouthpiece 1L is lighter in weight than the mouthpieces 1G to 1K of the seventh to eleventh embodiments.

[0111] <Thirteenth embodiment> 17(a)-(c) according to the thirteenth embodiment of the present invention, a nozzle 1M is provided with four breath release frame portions 30 as the spacer portion 20, similar to the nozzle 1C of the third embodiment, and in this nozzle 1M, the breath release gap S is made up of the inner space 31 of the four breath release frame portions 30 and the space 32 between the four breath release frame portions 30. These breath release frame portions 30 have the same shape and dimensions as each other.

[0112] In the breath release frame 30, both rib pieces 21, 21 protrude outward from the outer peripheral wall 3 of the mouth tube 1M and are disposed at approximately the same height as the outer peripheral wall 3, so that the rib piece 21 does not extend below the height of the injection port 7 of the mouth tube 1M. The peripheral piece 23 is integrally formed with both rib pieces 21, 21 so as to connect the parts at the same height as the outer peripheral wall 3 at the protruding ends of both rib pieces 21, 21, and extends from the same height as the outer peripheral wall 3 to the lower side below the height of the injection port 7 of the mouth tube 1M and at a slight incline outwardly with respect to the downward direction, specifically, the peripheral piece 23 extends, for example, about 1 to 3 cm below the height of the injection port 7 of the mouth tube 1M. The inclination angle of the rib piece 21 outward with respect to the downward direction is not limited and is, for example, in the range of about 3° to 30°. Furthermore, the peripheral piece 23 is formed so that its width gradually increases as it proceeds downward.

[0113] According to this nozzle 1M, the peripheral portion 23 extends downward from the height position of the injection port 7 of the nozzle 1M, which makes it even more difficult to hold the nozzle 1M in the mouth. Therefore, it is even more difficult to inflate the balloon 50 by mouth.

[0114] <Fourteenth embodiment> In the nozzle 1N according to the 14th embodiment of the present invention shown in Figs. 18(a)-(c), the peripheral piece 23 is arranged so that the balloon 50 rotates around its axis P (see Fig. 1) when the balloon 50 flies by receiving the air flow flowing in the opposite direction to the flight direction of the balloon 50. The other configurations are the same as those of the nozzle 1M of the 13th embodiment. In detail, the peripheral piece 23 extends below the height position of the injection port 7 of the nozzle 1N and at a slight incline outwardly with respect to the downward direction, and is arranged at an incline so that the width direction of the peripheral piece 23 intersects with the circumferential direction of the outer peripheral wall 3 of the nozzle 1N. The outward inclination angle of the rib piece 21 with respect to the downward direction is not limited, and is, for example, in the range of about 3° to 30°.

[0115] This nozzle 1N has the same advantages as the nozzle 1M of the thirteenth embodiment described above, and furthermore, the balloon 50 flies through the air while rotating around its axis P, which makes the balloon 50 stand out and increases its interest.

[0116] <Fifteenth embodiment> 19(a) to 19(c) according to the fifteenth embodiment of the present invention, a notch 23e is provided in the middle of the width of the peripheral piece 23, opening upward from a position slightly above the lower end of the peripheral piece 23 and communicating with the breath release gap S. The other configurations are the same as those of the nozzle 1M according to the thirteenth embodiment.

[0117] This mouth tube 1O has the same advantages as the mouth tube 1M of the thirteenth embodiment, and the notch 23e reduces the weight of the mouth tube 1O. Furthermore, when the mouth tube 1O is held shallowly in the mouth, the notch 23e also functions as an exhalation hole, making it even more difficult to inflate the balloon 50 with the mouth.

[0118] <16th embodiment> The nozzle 1P according to the 16th embodiment of the present invention shown in Fig. 20(a) to (c) comprises a spacer portion 20 including a plurality of (four in detail) rib pieces 21 that protrude outward from the outer peripheral wall 3 of the nozzle 1P, extend below the height position of the injection port 7 of the nozzle 1P and incline outward with respect to the downward direction, and are spaced apart at equal intervals around the entire circumference of the outer peripheral wall 3, and a thin, band-shaped peripheral piece portion 23 that connects the outer edges of the lower ends of the rib pieces 21 and extends around the entire circumference of the outer peripheral wall 3, outside and spaced apart from the outer peripheral wall 3. The inner and outer diameters of the peripheral piece portion 23 are set to be larger than the outer diameter of the outer peripheral wall 3 of the nozzle 1P. The angle of inclination of the rib pieces 21 outward with respect to the downward direction is not limited, and is, for example, in the range of about 3° to 30°.

[0119] In this nozzle 1P, the space 22 between adjacent rib pieces 21, 21 in the circumferential direction of the outer peripheral wall 3 is formed as an exhalation gap S, that is, the inner space 27 of the peripheral piece portion 23 on the outside of the outer peripheral wall 3 is formed as an exhalation gap S.

[0120] Here, the outer diameter of the peripheral piece 23 may be set smaller than the maximum diameter of the mouth of the person holding the mouthpiece 1P, but is preferably set slightly larger than the maximum diameter. In this case, it is particularly preferable that the outer diameter of the peripheral piece 23 is set to about 4 cm to 8 cm.

[0121] According to this mouth tube 1P, the rib piece 21 extends downward from the height position of the injection port 7 of the mouth tube 1P, which makes it even more difficult to hold the mouth tube 1P in the mouth. Therefore, it is even more difficult to inflate the balloon 50 by mouth.

[0122] Furthermore, if the outer diameter of the peripheral piece 23 is set to be larger than the maximum diameter of the mouth of a person holding the mouth tube 1P, the act of holding the mouth tube 1P in the mouth itself can be suppressed, and therefore, viral infection to a person due to saliva adhering to the mouth tube 1P when the person holds the mouth tube 1P in the mouth can be suppressed. Furthermore, since the peripheral piece 23 is reinforced by the four rib pieces 21, the peripheral piece 23 has high strength.

[0123] <Seventeenth embodiment> A mouthpiece 1Q according to the seventeenth embodiment of the present invention shown in Figs. 21(a) to (c) is the same as the mouthpiece 1P according to the sixteenth embodiment, except that the number of rib pieces 21 is three.

[0124] This mouth tube 1Q has the same advantages as the mouth tube 1P of the sixteenth embodiment, but since the number of rib pieces 21 is smaller than that of the mouth tube 1P of the sixteenth embodiment, the weight of the mouth tube 1Q can be reduced.

[0125] In the nozzles 1P, 1Q of the sixteenth and seventeenth embodiments, the number of rib pieces 21 is not limited to four or three, and may be, for example, two to eight.

[0126] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention. For example, the nozzle of the present invention may be configured by combining a plurality of characteristic elements of the nozzle of the above embodiment. [Industrial Applicability]

[0127] INDUSTRIAL APPLICABILITY The present invention can be used for a balloon with a nozzle and a pump device used for inflating the balloon. [Explanation of symbols]

[0128] 1A~1Q: Mouth tube 3: Outer wall 4: Bottom of nozzle 7: Inlet 20: Spacer portion 21: Rib piece portion 22: Space between rib pieces 23: Peripheral piece 25: Fin piece 30: Breath release frame 31: Inner space of the breath release frame 32: Space between the breath release frames S: Breathing gap 50: Balloon (balloon body) 70: Pump tool 71: Pump tool body 76: Intake section 77: Outlet section 78: Receiving tube (mouthpiece attachment part) 80: Locking piece x:Locked part

Claims

1. A balloon having a nozzle attached to a mouth portion and an injection port provided on the underside of the nozzle, The mouthpiece is provided with a spacer portion that forms a gap for exhalation between the outer wall of the mouthpiece and the mouth of a person holding the mouthpiece.

2. The nozzle includes a plurality of rib pieces as the spacer portions, the rib pieces protruding outward from the outer peripheral wall and spaced apart in a circumferential direction of the outer peripheral wall, 2. The balloon according to claim 1, wherein the space between adjacent rib pieces in the circumferential direction of the outer peripheral wall is at least a part of the breath release gap.

3. 3. The balloon according to claim 2, wherein said rib piece portion extends below the height of said injection port of said nozzle.

4. The nozzle includes one or more breath release frame portions as the spacer portion, the frame portions being composed of two rib pieces that protrude outward from the outer peripheral wall and are spaced apart in the circumferential direction of the outer peripheral wall, and a peripheral piece portion that connects the protruding ends of both the rib pieces and extends in the circumferential direction of the outer peripheral wall and is spaced outward from the outer peripheral wall, 2. The balloon according to claim 1, wherein the inner space of the breath release frame is at least a part of the breath release gap.

5. 5. The balloon according to claim 4, wherein said rib piece portion extends below the height of said injection port of said nozzle.

6. 6. The balloon according to claim 4, wherein the peripheral portion extends below the height of the injection port of the nozzle.

7. 6. A balloon as claimed in claim 4 or 5, wherein the peripheral portion is arranged so that, when the balloon is in flight, the peripheral portion receives an air current flowing in a direction opposite to the direction of flight of the balloon, causing the balloon to rotate about its axis.

8. 6. A balloon according to claim 4, wherein at least one of the two side edges of said peripheral piece is formed with a fin piece protruding outwardly from said outer peripheral wall.

9. The nozzle includes an exhalation frame portion as the spacer portion, the exhalation frame portion including a plurality of rib pieces that protrude outward from the outer peripheral wall and extend below the height position of the injection port of the nozzle, and are spaced apart from each other in the circumferential direction of the outer peripheral wall, and a peripheral piece that connects lower ends of the plurality of rib pieces and extends around the entire circumferential direction of the outer peripheral wall, spaced apart from each other on the outer side and below the outer peripheral wall; 2. The balloon according to claim 1, wherein the space between adjacent rib pieces in the circumferential direction of the outer peripheral wall is the breath release gap.

10. 10. The balloon according to claim 9, wherein the outer diameter of the peripheral portion is set to be larger than the maximum diameter of the mouth of a person holding the nozzle when the mouth is open.

11. The nozzle is attached to a nozzle attachment part provided on a blowing part of a balloon pump device when inflating a balloon, A plurality of the spacer portions are arranged at intervals in the circumferential direction of the outer circumferential wall, A balloon as described in any one of claims 1 to 3, wherein a locking portion is formed in the portion between adjacent spacer portions in the circumferential direction of the outer wall, to which a locking piece provided on the pump tool can be freely engaged and detached to hold the nozzle attached to the nozzle attachment portion.

12. A balloon pump device for injecting a fluid into a balloon to inflate the balloon according to claim 11, a pump device body having a fluid chamber formed therein; a blowout section for blowing out fluid from the fluid chamber; a nozzle attachment section provided on the blowout section in communication with the fluid chamber and to which a nozzle of a balloon is attached when injecting fluid into the balloon; and a locking piece for detachably locking the nozzle attached to the nozzle attachment section, The locking piece locks a locked portion formed in a portion between adjacent spacer portions in the circumferential direction on the outer wall of the nozzle.

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