JPH07218193A - Fireworks varying in shape by using material having shape memory effect - Google Patents

Abstract

PURPOSE:To shorten a fireworks assembling time at a site and to further enhance spectators interests by mounting a cylinder packed with explosive or explosive at a material having a shape memory effect. CONSTITUTION:A shape memory material 1 is so treated to store a shape as to become a specific waveform at the ambient temperature. The material l is also so treated to store a shape that the waveform becomes other specific waveshape when the material 1 is raised at its temperature. A plurality of cylinders 2 in which explosives are packed in the materials 1 are mounted. Primer vents 3 of the cylinders 2 in which the explosives are packed are respectively connected to safety fuses 4. When constructed in this manner, it is small before ignition and does not occupy a place. When a mounting part is provided, mounting of the cylinder 2 packed with the explosive is facilitated. After ignition, the material 1 is raised at a temperature by burning of the explosive. The material 1 is varied in its shape by the temperature rise to alter to a predetermined shape. The material 1 is returned to the ambient temperature for a while after the burning of the explosive, and hence it is changed in shape to be returned to another shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a firework whose shape and size are changed by using a material having a shape memory effect (hereinafter referred to as a shape memory material).

[0002]

2. Description of the Related Art The structure of a conventional fireworks display is as shown in FIG. (B) Split bamboo (7) into the character or shape you want to express in the wooden frame (6)
Attach a fireworks frame. (B) Attach the tube (2) filled with a plurality of gunpowder to the split bamboo (7). (D) The ignition ports (3) of the cylinders (2) filled with explosives are connected by the squib (4). It had the above structure.

Many chemicals are used for fireworks in addition to salt stone, sulfur and charcoal. For example, potassium chlorate, strontium nitrate, magnesium, iron powder, antimony trisulfide, etc. are available. These chemicals have a role as an oxidizing agent, a flame colorant, a luminescent agent, a spark agent, a sounding agent, and the like. Actually, a plurality of chemicals are mixed and used. In the property submitted by the present invention, explosives collectively refers to various chemicals prepared by mixing a plurality of chemicals in this way.

[0004]

The prior art has the following drawbacks. (B) It is bulky to transport fireworks after assembling them. (B) Assembling fireworks on site takes time. It also takes time to clean up afterwards. (C) Since the shape of the fireworks is known in advance, the situation after ignition can be predicted and it is not interesting. (D) The shape of the fireworks does not change, so it is not interesting to watch. The present invention has been made to solve these drawbacks.

[0005]

[Means for Solving the Problems]

(B) The shape memory material (1) is subjected to shape memory processing at room temperature so as to form a waveform as shown in FIG. (B) Also, when the temperature of the shape memory material (1) rises, shape memory processing is performed so that the waveform becomes as shown in FIG. (C) A plurality of cylinders (2) filled with explosives are attached to the shape memory material (1). (D) The ignition ports (3) of the cylinders (2) filled with explosives are connected by the squib (4).

As shown in FIG. 3 (3), the shape memory material (1) may be provided with a mounting portion (5), and the mounting portion (5) may be mounted with a cylinder (2) filled with explosive.

[0007]

Since the present invention has the above-mentioned structure, it is small and does not take up much space before ignition. Further, if the mounting portion (5) is provided, the cylinder (2) filled with the explosive can be easily mounted. After ignition, the temperature of the shape memory material (1) rises due to the combustion of the explosive. The shape memory material (1) undergoes a shape change due to the temperature rise, and changes to a shape as shown in FIG. After a while after the explosive has burned, the temperature of the shape memory material (1) returns to room temperature, so that the shape of the shape memory material (1) changes and returns to the shape shown in FIG.

[0008]

EXAMPLES Some of the embodiments of the present invention are as follows.

(B) The shape memory material (1) is subjected to shape memory processing at room temperature so as to form a waveform as shown in FIG.
Further, when the temperature rises, shape memory processing is performed so that the shape becomes as shown in FIG. A plurality of cylinders (2) filled with explosives are attached to the shape memory material (1). Connect the igniter (3) of each cylinder (2) filled with explosives with a squib (4).

In the case of this embodiment, the following can be considered. The shape of the shape memory material (1) whose shape is changed by temperature change does not need to be limited to the square shape as shown in FIGS. It may have a circular shape or a character shape. It does not have to be circular. Also, the shapes at room temperature and at temperature rise may be different. There are various shape memory processing methods such as making a small crescent at room temperature into a large crescent shape when the temperature rises, changing only the shape without changing the size, and making the shape smaller when the temperature rises.

There is no particular restriction on the partial shape of the shape memory material (1). For example, the number of waves may be increased as shown in FIG. In this case, the change in the size of the entire fireworks can be increased.

(B) A plurality of attachment parts (5) are attached to the shape memory material (1) used in the embodiment (a) to make a frame of fireworks. Attach the cylinders (2) filled with gunpowder to the respective attachment parts (5). A cylinder filled with each gunpowder (2)
Connect the crater (3) of No. 3 with the squib (4).

The mount (5) may or may not have a bottom. As for the internal structure of the attachment part (5), it is easy to attach a cylinder (2) filled with explosives by attaching a spring (8) as shown in Fig. (7) or by providing an inclination as shown in Fig. (8). become. When it is necessary to securely attach the tube (2) filled with explosive, a bottom and a lid (9) are provided on the attachment portion as shown in Fig. 9 or a screw ( 1
There are various methods such as setting 0) and tightening and fixing. Any method may be used for fixing the lid (9).

In the case of this embodiment, the following can be considered as in the case of the embodiment (a). The shape of the shape memory material (1) whose shape is changed by temperature change does not need to be limited to the square shape as shown in FIGS. (3) and (4). It may have a circular shape or a character shape. It does not have to be circular.
Also, the shapes at room temperature and at temperature rise may be different. There are various shape memory processing methods such as making a small crescent at room temperature into a large crescent shape when the temperature rises, changing only the shape without changing the size, and making the shape smaller when the temperature rises.

The same can be said for the partial shape of the shape memory material (1) as in the embodiment (a).

(C) The shape memory material (11) is subjected to a shape memory process at room temperature so that the waveform becomes a waveform as shown in FIG. 11 and a wave extends as shown in FIG. 12 when the temperature rises. Mounting part (1
3) are connected by the shape memory material (11) as shown in FIG. Figure (1) Connecting multiple mounting parts (13)
Make a frame of fireworks as in 4). As for the mounting portions (13) located at the corners and roundness of the frame of the fireworks, prepare those in which the connecting portion (15) and the other connecting portion (15) have the necessary angles as shown in FIG. (15). After that, similarly to the embodiment (B), a cylinder filled with explosive is attached to the attachment portion (13) and connected by a squib.

As for the internal structure of the mounting portion (13), the structure of the example described in the embodiment (b) may be used.

In the case of this embodiment, the following can be considered. The shape of the fireworks frame formed by connecting the attachment portions (13) with the shape memory material (11) is not limited to the star shape as shown in FIG. It may be a crescent or a letter.
Any number of connecting portions (15) of the mounting portion (13) may be provided. Mounting part (13) and shape memory material (1
The connection of 1) may use rivets or welding. However, as shown in Fig. (13), connecting with screws (14), bolts, nuts, etc. has the advantage that the frame of fireworks used once can be disassembled and the frame of fireworks of a different shape can be made next time. .

Regarding the method of shape memory processing, it is not necessary to make all the shape memory materials (11) used for creating the frame of the fireworks similar shape changes. Some may have a wavy shape and some may have a wavy shape. By doing this, the shape of the fireworks frame can be changed before and after the shape change. Further, the temperature at which the shape change starts may be changed in the specific shape memory material (11). In this case, a firework whose shape changes from the end of the frame of the fireworks can be produced.

The shape of the shape memory material need not be limited to the waveform as shown in FIG. The number of waves may be increased similarly to the embodiment (a). Further, it may have a coil shape like the shape memory material (16) shown in FIG. Besides, the shape memory material (18) shown in FIG. (17) or a spiral shape may be used. If the shape memory processing is performed so that the coiled or spiral shape extends straight after the shape change, the size change of the frame of the fireworks can be made larger than the case where the corrugated shape memory material (11) is adopted. .

The shape memory material (16) and the connecting portions (17) provided at both ends of the shape memory material (18) may be made of any material. Further, the shape memory material (16) and the connection between the shape memory material (18) and the connecting portion (17) may be of any method.

The following method can be used to change the ejection angle of sparks. Attaching part (13) as shown in Fig. (16)
When two shape memory materials (16) are used for the connection, the shapes after the respective shape changes are made different. Then, after the shape change, as shown in Fig. (18), the attachment part (13)
The angle of changes. Further, even if the shapes after the respective shape changes are the same, the wire (19) is provided on the lower side of the mounting portion (13).
The angle changes as shown in FIG. 1
Even when the mounting portions (13) are connected by one shape memory material, the angle changes if the shape memory material (20) that changes from the shape shown in FIG. (20) to the shape shown in FIG. (21) is used. If a skeleton of the fireworks as shown in FIG. 14 is made by using such a means, after the ignition, the injection angle of the spark changes and the spark seems to spread. The idea of changing the spark ejection angle can be applied to the embodiments (a) and (b).

(D) The figure (11) used in the example (c) and the figure (2) using the shape memory material (11) of the figure (12).
Connect the attachments shown in 2) to make a firework skeleton with the shape shown in Fig. (14). After that, as in the case of the embodiment (b), a cylinder filled with explosive is attached to the attachment portion and connected by a squib.

The mounting portion has a structure as shown in FIG. Bearings (2
2) and bearings (23) are provided. The bearing (22) is provided with a connecting portion (24) and the bearing (23) is provided with a connecting portion (25). Bearing (22) and
A fixing screw (26) is provided on (23) and can be fixed by being fitted. Also, the mounting cylinder (21)
A plurality of screw holes (27) are provided on the outer periphery of the
The movable rotation angle can be limited by attaching a screw (29) as in 3). The mounting tube (2
If the portion having the screw hole (27) in 1) is used as a bearing and a screw having the same function as the fixing screw (26) is provided, the angle can be freely selected.

As for the internal structure of the mounting cylinder (21), the structure of the example described in the embodiment (b) may be used.

In FIG. (22), bearings (22) and (2
There are 2) of 3), but it is not necessary to pay particular attention to two. Three
You can use one or four. Also, one connecting portion is provided on one bearing, but it is not necessary to stick to one, and two or three connecting portions may be used.

In the case of this embodiment, the method of fixing the bearings (22) and (23), the method of not fixing them, the method of fixing only one of them, the method of fixing only a specific part of the frame of fireworks,
There are various embodiments such as a method of limiting the movable rotation angle without fixing.

It is conceivable that the shape of the frame of the fireworks to be created, the connection between the mounting portion and the shape memory material, the shape memory material to be used, the spark ejection angle, etc. are the same as those in the embodiment (C).

Further, the following can be considered in this embodiment. An example thereof is shown in FIGS. (24) and (25). The mounting portion (30) or (31) shown in FIG. (22) using the shape memory material (11) used in Example (C).
Are connected as shown in FIG. Mounting parts on both ends (3
In 1), one having three connecting portions is used, and a connecting member (33) is attached to one of the connecting portions so that the distance does not change. Attach the screw (29) to the attachment part (31),
Limit the movable rotation angle. Mounting part (30) and
The bearing to which the connection (32) is attached at (31) allows it to rotate freely without locking the fixing screw (26). Further, the bearings to which the connecting portions other than the connecting portion (32) are attached are fixed with the fixing screws (26) so that they cannot be freely rotated. With the above configuration, when the shape memory material (11) changes in shape, a shape as shown in FIG. 25 is obtained. The shape of the fireworks framework can be changed before and after ignition if performed at the key points of the fireworks framework that creates such a mechanism. By the way, as the connecting member (33) used here, a member that does not stretch like wire but can slacken may be used depending on the shape of the frame of the fireworks to be created.

If the bearing is not fixed, the shape of the firework frame to be created may be unstable during installation or transportation, which may be a problem. In such a case, the shape memory material (34) shown in FIGS. (26) and (27) may be used. The shape memory material (34) is subjected to shape memory processing so as to have a shape as shown in FIG. 26 at room temperature and a shape as shown in FIG. The shape memory material (34) is attached to the attachment cylinder (21) using screws (36) as shown in FIG. (28). After ignition, the temperature of the shape memory material (34) rises to the shape shown in FIG. (27), and the bearing (22) can move freely. The shape of the shape memory material (34) is naturally the same as that of the shape memory material described so far (2
6) and shapes other than those shown in FIG. 27 are also conceivable.

(E) The figure (11) used in the example (c) and the figure (29) using the shape memory material (11) of the figure (12).
Connect the attachment parts (37) as shown to make a frame of fireworks. The mounting portion (37) has a plurality of mounting holes (3
8) is provided. Each of these mounting holes (3
Attach a tube filled with gunpowder to 8) and connect it with a fuse.

As for the internal structure of the mounting hole (38), the structure of the example described in the embodiment (B) may be used.

With such a structure, the hanging metal fitting (3
If a wire or rope is hung through 9), the shape memory material (11) will rise in temperature and change its shape after ignition after ignition. Therefore, the skeleton of the fireworks looks like a drooping blind.

The same effects can be obtained by applying the embodiments described above to this embodiment. For example, if the mounting portion (13), the shape memory material (11) and the connecting member (40) having no shape memory effect used in the embodiment (C) are used, the result is as shown in FIG. Five attachment parts (13) are connected using four connecting members (40).
Make five of them and make each one of them a shape memory material (1
Connect using 1) to make a frame of fireworks. In this way, the same effects can be obtained by applying the embodiments described above.

In this embodiment, the existence of an attachment portion to which a plurality of cylinders filled with explosives can be attached and how to transfer heat will be described below. The present invention utilizes the property of the shape memory material to change its shape depending on the temperature. Therefore, the effect cannot be obtained unless the temperature of the shape memory material changes. In particular, when the shape of the mounting portion (37) shown in FIG. (29) is used, the temperature rise of the shape memory material (11) cannot be expected so much. Also, in the embodiments described above, the heat required for the shape memory material may not be transferred depending on the size of the frame of the fireworks to be created, the material of each part, the amount of explosive, and the like. Some measures for such a case will be described.

The first example is shown in FIG. Figure (3
1) is a partial perspective view of FIG. 29, with some additions. The shape memory material (11) is attached to the gunpowder mounting portion (4
1) is provided. The wire (42) or the like is coated with gunpowder (43) and attached to the gunpowder attachment portion (41). Connect the squib (4) so that the fire will turn when ignited. When more heat than necessary is applied to the shape memory material (11) by this method, an iron plate or the like is inserted between the shape memory material (11) and the explosive (43). Alternatively, an explosive mounting portion (41) that widens the distance between the shape memory material (11) and the explosive (43) may be used.

The second example is shown in FIG. FIG. 32 is a partial perspective view of FIG. 29 with some additions. Heat transfer member (44) on shape memory material (11)
Is provided. If a material having good heat conductivity is used for the heat transfer member (44), the temperature of the heat transfer member (44) rises due to sparks after ignition, and the heat is transferred to the shape memory material (11). Heat transfer member (4
The shape of 4) need not be limited to that shown in FIG. The shape may be the same as that of the heat transfer member (45) shown in FIG. (33), or the wire mesh (47) or wire may be provided on the loop portion like the heat transfer member (46) shown in FIG. .

Further, a heat transfer member having a shape considered to be optimum depending on the shape of the shape memory material to be used and other conditions may be adopted. For example, a diagram that grows with increasing temperature (35)
When a coil-shaped shape memory material (48) such as
Heat from the mounting portion (49) is transferred from the end of the shape memory material (48). Therefore, the central portion is slow to change its shape. However, if the heat transfer member (50) is provided, heat is also transferred to the heat transfer member (50), so that the shape of the center portion changes without being delayed to the end side. The shape memory material (48) extends along with the shape change, but since the heat transfer member (50) is fixed, the contact portion between the shape memory material (48) and the heat transfer member (50) is sequentially delayed due to the end shape change. It will give heat to the part.

Further, when a spring or a shape memory material is used for the heat transfer member (50) and the shape memory material (48) is pressed down, when the shape memory material (48) extends to some extent, as shown in FIG. (36). become. If heat conduction from the attachment portion (49) is not sufficient, the temperature of the shape memory material (48) will drop and will return to the shape at room temperature. If this principle is applied to the skeleton of the fireworks shown in Fig. (29), it is possible to expect the effect that the blinds will hang down after ignition and that the blinds will rise after some time.

The heat transfer member (50) is a shape memory material (4).
It is possible to transfer heat without being in contact with 8). In this case, the amount of heat transferred is smaller than that in the case where they are in contact with each other, so that it is necessary to widen the area of the portion that radiates heat from the heat transfer member (50) to the shape memory material (48).

In addition to the two methods just described, as a method of applying heat to the shape memory material, a method of directly applying explosives to the shape memory material and connecting them with a squib so that a fire may be generated at the time of ignition, or a squib to the shape memory material There are various methods, such as the method of wrapping.

When it is necessary to evenly transfer heat to the shape memory material, it is effective to wind a material having good heat conductivity around the shape memory material or to cover the shape memory material with a material having good heat conductivity. Is.

Other conceivable points in this embodiment are as follows. It is conceivable that the shape of the frame of the fireworks to be created, the connection between the mounting portion and the shape memory material, the shape memory material to be used, the ejection angle of the spark, and the like are the same as in Example (C).

(F) The shape memory material (51) is subjected to shape memory processing in a shape as shown in FIG. 37 at room temperature. Further, shape memory processing is performed so that the shape changes to the shape shown in FIG. 38 when the temperature rises. As shown in FIGS. (39) and (40), the explosive (53) is applied to a plurality of locations on the shape memory material (51). Connect the applied powder (53) with a squib (54). Further, the shape memory material (52) which has been subjected to the shape memory processing in a shape symmetrical to the shape memory material (51) is similarly coated with the explosive (53) and connected by the squib (54). The shape memory material (51) and the shape memory material (52) are fixed to the support member (55). The fixing method is shown in Fig. 39 and
Screw (56) and nut (57) as shown in Figure (40)
May be used, but it is not particularly limited. The shape memory material (51) and the shape memory material (52) may be fixed to the support member (55) before the gunpowder (53) and the squib (54) are attached. The order of work is not particularly limited. After ignition, the shape changes to the shape shown in FIG. (41).

The shape memory materials (51) and (52) are not limited to the plate-shaped members as shown in FIGS. 39 and 40, and may be wire-shaped members or tubular members.
The shape represented by the shape change is shown in Fig. 39 and Fig. 41.
It does not need to be limited to those shown in, and may be in the form of letters. The number of shape memory materials may be one or two or more. As for the shape memory processing method, various types can be considered as in the above-described embodiments.

It should be noted that, as can be said including the above-mentioned embodiments, if it is a small size, it can be launched as a fireworks display and a character or shape can be drawn in the sky. In this case, when combined with a parachute, characters and shapes can be drawn in the sky for a long time, and the falling speed also slows down, so it is possible to avoid injury to people when falling.

Further, with a small type, the following can also be done. In the embodiments described so far, the heat at the time of combustion of the explosive and the heat at the time of combustion of the dedicated explosive provided near the shape memory material are used for the shape change. However, external heat also causes a shape change. An example of utilizing external heat is shown in Fig. (42). Set the fireworks in the figure (39) adjacent to the candle (58), and make a hole in the center of the candle (58) to reach the core (59) of the candle.
Insert the end of. With this structure, the candle (58) becomes shorter as it burns. As the candle (58) becomes shorter, the candle fire (60) approaches the fireworks.
The shape memory material (51) rises in temperature due to radiant heat and changes its shape. The candle (58) continues to burn further, until the fire of the candle (60) ignites the squib (54),
Fireworks start to burn.

(G) The shape memory material (61) is subjected to shape memory processing in a shape as shown in FIG. 43 at room temperature. Further, shape memory processing is performed so that the shape changes to the shape shown in FIG. 44 when the temperature rises. As shown in FIG. (45), the shape memory material (6
Apply gunpowder (62) to a plurality of locations in 1). And
A cylinder (63) filled with gunpowder is attached to the end of the shape memory material (61). The ignition port (64) of the cylinder (63) filled with the explosive and the applied explosive (62) are connected by a squib (65). The fireworks thus constructed is installed at a position adjacent to the candle (66). By igniting the squib (65), a plurality of explosives (62) and a tube (6) filled with explosives
The fire turns into 3). The shape memory material (61) changes its shape due to the applied explosive (62) and the heat of combustion of the squib (65) to change its shape as shown in FIG. (46). Sparks are emitted from the igniter (64) of the tube (63) filled with explosives, and the candle core (67) is ignited.

A cylinder (6) filled with explosive powder of the shape memory material (61)
The portion to which 3) is attached may be provided with one having the same function as the attaching portion (5) described in the embodiment (b) and the like.

When the present invention is applied in this way, it can also be used for candle ignition.

As for the shape of the shape memory material and the method of shape memory processing, various things can be considered as in the above-described embodiments. In other words, it is not necessary to limit to those shown in FIG. 43 or FIG. A spiral shape may be used, and any shape memory processing may be performed.

The explosive (62) may not be used as long as the heat generated when the squib (65) burns is sufficient to cause a shape change.

For example, there is a method in which a tubular shape memory material is used and a squib is passed through the hollow portion inside. In this case,
7), (48), and (49), as long as the inner diameter of the end is thin enough to attach the gunpowder-filled cylinder (63), the shape of the shape memory material (68) will be used as a mounting portion. It also plays a role. The squib (65) is shown in Figure (4
As shown in 7), (48), and (49), holes (69), cuts (70), and grooves (71) may be provided and pulled out therefrom. The same applies to the ignition side of the squib (65). Note that the fuse (65) is not shown in FIG. (49) because the drawing becomes unclear.

In addition to this, as a method of giving sufficient heat, a method of sticking or winding a squib, a method of using a thick squib, a plurality of holes in the shape memory material (61), and a squib to sew the holes There are various things such as passing.

Further, if it is used for igniting a candle or the like, the same effect can be obtained with the ones shown in FIGS. 50 and 51. This is the explosive (6
The brazing (72) is used for the part 2) and the brazing (73) is used for the squib (65). Also, the string (73) in which the wax is dyed is made long by using the cylinder (63) filled with the explosive. With this structure, if the end of the string (73) dyed with wax is lit, the shape memory material (6
1) Wax (72) and wax-dyed string (73)
The shape changes as shown in Fig. (51) due to the shape change caused by the heat of combustion. Since the braided string (73) has a long end, the flame burns to the candle core (67).

In this case, the same effect can be obtained by attaching the brazing string (73) to the shape memory material (61) without using the brazing (72). A flammable substance may be used as a substitute for the wax.

When the present invention is used to ignite a candle such as a candle service which is often performed at a wedding reception,
The following are also possible.

The shape memory material (74) at room temperature, as shown in FIG.
As shown in (53), shape memory processing is performed so that when the temperature rises in a coil shape, as shown in FIG. The shape memory material (74) is attached to the end portion of the shape memory material (61) and the cylinder (63) filled with the explosive shown in FIG. After ignition, the shape memory material (74) changes to the shape shown in FIG. (53). Further, if the shape memory material (74) is attached to the shape memory material (61), it also serves as the attaching portion (5) described in the embodiment (B) and the like. Shape memory material (7
As for the shape of 4) and the method of the shape memory processing, various kinds can be considered as in the above-described embodiments.

There are other examples in which the shape memory material is used for decoration. For example, it is used as a candlestick. Not only can it be used as an igniter and can be used as a candle holder with an igniter, but there are also the following examples. An example is shown in FIGS. 55 and 56. The temperature of the shape memory material (75) rises and the shape of the shape memory material (75) changes due to the combustion of the wax (78). Of course, since the shape of the shape memory material (75) is an example, there are many other shapes and shape memory processing methods.

For example, a candle is surrounded by a shape memory material processed into the shape of a banana peel so that the skin is peeled off, or a shape memory material processed into a petal shape is surrounded and the petals are opened after ignition. And so on.

In addition to the candle holder, a lighting fixture umbrella,
It can also be used for the bones of umbrellas of lighting equipment, support members for lighting equipment, and the like.

In the case of utilizing radiant heat, if the shape memory material or the material in contact with the shape memory material is colored with a color that absorbs heat well, or the colored material is attached, the shape can be easily changed.

For whatever reason, when the color of the colored portion should not be lost, it is more effective to use the colored resin or the like than the coloring by the paint.

The several embodiments of the present invention have been described above.

The shape memory material used in the present invention is metal,
Any material having a shape memory effect, such as an alloy, a non-metal, or an organic material, may be used. The material may be properly used according to the purpose. For example, if it is desired to change the shape after ignition and return it to the original shape after combustion, a bidirectional shape memory material that reversibly changes its shape by a temperature change across a critical temperature may be used. Further, the shape memory effect of the organic material is generally a one-way one that memorizes the shape at high temperature. However, there is no problem when using such a material as a disposable material or when it is used regardless of the shape after the powder is burned. The critical temperature at which the shape starts to change varies depending on the material used.
Also, the critical temperature changes depending on the amount of additives. In this way, the material may be used properly according to the purpose.

Finally, an installation method for carrying out the present invention will be described.

The present invention utilizes the shape memory effect of the shape memory material. Therefore, it is not possible to obtain the effect that is expected when a force larger than that generated when the shape is changed is applied. Figure (2) used for explanation in Example (e)
9) When suspending the frame of the fireworks using the suspending metal fittings (39) or leaning against the wall, the weight of the entire fireworks should be taken into consideration when designing. However, when the fireworks described in the examples (a) and (b) are directly installed on the uneven ground, the fireworks are not caught and the shape does not change as expected.
Therefore, it is necessary to consider the installation location and method so that no extra load is applied when the shape changes. For example, setting the installation place flat, attaching a car to the frame of fireworks,
A method of supporting the frame of the fireworks with one point and floating it from the ground surface is possible.

Further, there is a place on the water as an installation place that has not been heard so far in the past. In this, as shown in FIG. 57, a float (81) is attached to the attachment part (13) and a gimmick fireworks is installed on the water. The float (81) does not have to be attached to all attachments (13). In addition, depending on the shape and configuration of the frame of the fireworks to be created, it may be better to float the shape memory material. The fireworks frame may be assembled on the ground, but the shape memory material (16) and the mounting part (1
If the connection of 3) can be easily made by using a magnet or the like, the work of leaning out from the ship and assembling the frame of the fireworks is not difficult. If the propellant powder (82) is attached and the squib (4) is connected, the skeleton of the fireworks will move or rotate on the water surface while changing its shape after ignition. The propellant explosive (82) may be provided on a plurality of attachment portions (13), or a plurality of propellant explosives (82) may be attached to one attachment portion (13).

In order to pull back the framework of the fireworks that has moved on the water surface, it is sufficient to attach a string to the framework of the fireworks in advance. In addition to this, as a method of moving the water surface, there is a method of wirelessly operating a mechanism similar to a model of a ship operated by radio on the frame of fireworks, and if the terrain is a cove, pulling it from the opposite bank with a string. is there.

Regarding the timing of ignition, the skeleton of the fireworks may be moved after ignition, but if it is possible to ignite with a timed ignition device or wirelessly, the skeleton of the fireworks may be moved before the ignition.

There are many other examples. There are various things such as expressing letters and shapes after winding flammable substances and burning.

As described above, there are various kinds of embodiments of the present invention, from large ones to small ones.

[0073]

As described above, the present invention uses the shape memory material to change the shape by temperature change. Therefore,
If it is desired to overcome the bulkiness during transportation, the frame of the fireworks of the present invention, which has a small shape at normal temperature and a large shape due to temperature rise, may be designed. If only the frame of the fireworks of the present invention is assembled and the work at the site is performed only by inserting it into the mounting portion of the cylinder filled with the explosive and attaching the squib, the time required for the assembly at the site can be shortened. Also, designing a framework of fireworks that changes into a small shape at room temperature makes it easier to clean up later. Since the framework of the fireworks of the present invention changes in shape, the situation after ignition cannot be predicted. Therefore, the interest of the audience is increased. Since the framework of the fireworks of the present invention changes in shape, it is possible to produce interesting fireworks in which the shape of the fireworks and the ejection angle of the sparks change after ignition. Thus, the drawbacks of the prior art are overcome.

Further, as described in the embodiments (C) and (D), the present invention can make the skeleton of fireworks into a component.
By making it into parts, a large storage space is not required, and it is possible to easily convert fireworks of other shapes into the framework.

It can be installed on the water and can be used for a large scale. It can also be moved over water using propellant gunpowder.

The fireworks described in the embodiment (g) are not only for seeing, but have the function of lighting a candle.

Although a structural example has been described in the embodiment, it may be used as a part of an imitation product such as an animal as an actual specific example. Swans and cranes, snakes, dragons, elephant flowers,
There are various things such as the tails of monkeys and dogs. If we explain the elephant's flower, we will use a tubular shape memory material, attach a cylinder filled with explosive powder, and attach a squib. Pass the squib through the hollow part inside the flower, and put the end of the squib out of the buttocks as a tail. In addition, if the shape memory processing is performed in a hanging shape at normal temperature and in a rising shape when the temperature rises, after ignition, the elephant lifts the flower and blows fire.
If the present invention is applied to a candle service performed at a wedding reception or the like by such a method, a great effect can be obtained.

The present invention can also be used as a decoration for candle holders and lighting equipment. In this case as well, a staging effect that is not available in the past can be obtained. It can also be used to protect the glass part of lamps and lanterns.

[Brief description of drawings]

FIG. 1 is a perspective view of an example and an embodiment (a) of the present invention before a shape change.

FIG. 2 is a perspective view of an example and an embodiment (a) of the present invention after a shape change.

FIG. 3 is a perspective view of an example and an example (b) of the present invention before a shape change.

FIG. 4 is a perspective view of an example and an example (b) of the present invention after a shape change.

FIG. 5 is a perspective view of an example of a conventional device fireworks.

FIG. 6 is a partial view of a shape memory material in which the number of waves before the shape change is increased.

FIG. 7 is a cross-sectional view of a mounting portion provided with a spring inside.

FIG. 8 is a cross-sectional view of a mounting portion having a tilt inside.

FIG. 9 is a cross-sectional view of a mounting portion provided with a bottom and a lid.

FIG. 10 is a sectional view of a mounting portion provided with a screw.

FIG. 11 is a perspective view of the shape memory material of Example (C) before the shape is changed.

FIG. 12 is a perspective view of the shape memory material of Example (C) after the shape is changed.

FIG. 13 is a perspective view of a part of the skeleton of the fireworks of Example (C).

FIG. 14 is a plan view of a frame of fireworks composed of a shape memory material and a mounting portion.

FIG. 15 is a plan view of an example of a mounting portion of the embodiment (C).

FIG. 16 is a partial view in which a coil-shaped shape memory material is used in Example (C).

FIG. 17 is a front view of an example of a shape memory material.

FIG. 18 is a partial front view of an example of fireworks in which a spark jet angle is changed.

FIG. 19 is a partial front view of an example of fireworks in which a spark jet angle is changed.

FIG. 20 is a perspective view of an example of a shape memory material before a shape change.

FIG. 21 is a perspective view of an example of a shape memory material after a shape change.

FIG. 22 is a front view of the mounting portion of the embodiment (d) (partially sectional view).

FIG. 23 is a plan view of the mounting portion of the embodiment (d).

FIG. 24 is a plan view of the application example of the embodiment (D) before the shape is changed.

FIG. 25 is a plan view of the application example of Example (D) after the shape is changed.

FIG. 26 is a perspective view of an example of a shape memory material for fixing a bearing before a shape change.

FIG. 27 is a perspective view of an example of a shape memory material for fixing a bearing after a shape change.

FIG. 28 is a partial view of an example of mounting a shape memory material for fixing a bearing before a shape change.

FIG. 29 is a plan view of the example (e).

FIG. 30 is a plan view of an example (e) using the member of the example (c).

FIG. 31 is a perspective view showing a method of raising the temperature of the shape memory material by explosives.

FIG. 32 is a perspective view showing a method of raising the temperature of the shape memory material by a heat transfer member.

FIG. 33 is a perspective view of an example of a heat transfer member.

FIG. 34 is a perspective view of an example of a heat transfer member having a wire mesh.

FIG. 35 is a front view of a heat transfer member utilization example.

FIG. 36 is a front view of an application example of utilizing a heat transfer member.

FIG. 37 is a front view of the shape memory material of Example (F) before the shape change.

FIG. 38 is a front view of the shape memory material of Example (F) after the shape change.

FIG. 39 is a front view of the example (F) before the shape change.

FIG. 40 is a side view of the example (F) before shape change.

FIG. 41 is a front view of the example (F) after the shape change.

FIG. 42 is a front view of the application example of the example (F) before the shape is changed.

FIG. 43 is a front view of the shape-memory material of Example (G) before the shape is changed.

FIG. 44 is a front view of the shape memory material of Example (G) after the shape change.

FIG. 45 is a front view of the example (G) before shape change.

FIG. 46 is a front view of the example (G) after the shape is changed.

FIG. 47 is a perspective view of a tubular shape memory material with holes.

FIG. 48 is a perspective view of a tubular shape memory material having a cut.

FIG. 49 is a perspective view (partially sectional view) of a tubular shape memory material provided with grooves.

FIG. 50 is a front view of the application example using the wax of Example (G) before the shape change.

FIG. 51 is a front view of the application example using the wax of the example (g) after the shape is changed.

FIG. 52 is a front view of an example of using a shape memory material for decoration before a shape change.

FIG. 53 is a front view of an example in which a shape memory material is used for decoration after a shape change.

FIG. 54 is a front view of an example in which a shape memory material is mounted for decoration before the shape is changed.

FIG. 55 is a front view of an example in which a shape memory material is used for a candle holder before the shape is changed.

FIG. 56 is a front view of the example in which the shape memory material is used for the candle holder after the shape is changed.

FIG. 57 is a front view of a portion of a water installation example of the present invention before a shape change.

[Explanation of symbols]

 (1) is a shape memory material (2) is a cylinder filled with gunpowder (3) is a firing port (4) is a squib (5) is a mounting part (6) is a wooden frame (7) is a split bamboo (8) is a spring (9) is a lid (10) is a screw (11) is a shape memory material (12) is a hole (13) is a mounting part (14) is a screw (15) is a connecting part (16) is a shape memory material (17) The connection part (18) is a shape memory material (19) is a wire (20) is a shape memory material (21) is a mounting cylinder (22) is a bearing (23) is a bearing (24) is a connection part (25) is a connection part ( 26) is a fixing screw (27) is a screw hole (28) is a hole (29) is a screw (30) is a mounting part (31) is a mounting part (32) is a connecting part (33) is a connecting member (34) is a shape Memory material (35) is hole (36) is screw (37) is attachment part (38) is attachment hole (39) is suspended The metal fitting (40) is a connecting member (41) is an explosive mounting part (42) is a wire (43) is an explosive (44) is a heat transfer member (45) is a heat transfer member (46) is a heat transfer member (47) is a wire mesh. (48) is a shape memory material (49) is a mounting part (50) is a heat transfer member (51) is a shape memory material (52) is a shape memory material (53) is explosive (54) is a squib (55) is a support member (56) is a screw (57) is a nut (58) is a candle (59) is a candle core (60) is a candle fire (61) is a shape memory material (62) is explosive (63) is explosive (64) is a crater (65) is a squib (66) is a candle (67) is a candle core (68) is a shape memory material (69) is a hole (70) is a break (71) is a groove (72) (73) is a string dyed with wax (74) is a shape memory material (75) Shape memory material (76) is pedestal (77) is wax container (78) is wax (79) is wick (80) is candle fire (81) is floating (82) is propellant powder

Claims (3)

[Claims] 1. A firework in which a cylinder filled with explosive or a gunpowder is attached to a material having a shape memory effect. 2. A frame of fireworks using a material having a shape memory effect in whole or in part. 3. A firework in which a cylinder filled with gunpowder or a gunpowder is attached to a frame of fireworks using a material having a shape memory effect wholly or partially