JP4579016B2 - Electric ignition for fireworks - Google Patents

Description

  The present invention relates to a pyrotechnic for transferring fire to a blown smoke or the like, or an electric igniter for electrically igniting a explosive explosive from a remote location (in the present invention, an electric igniter is also referred to as an electric igniter). )

  Conventional ignition methods, such as uplifting fires and in-house fireworks at places where smoke fires are consumed, have a conventional method in which a person has a direct fire to drop fire into the launching cylinder 13, or in the case of early firing, A common method was to drop the fireworks attached to it. In recent years, with the aim of ensuring safety at the time of ignition and improving the viewing effect by launching in synchronism with music, etc. There has been an increasing number of cases where remote ignition is performed by electric ignition such as directly igniting explosives such as lead wires and explosives such as small black powder.

  In such an electric ignition method, the ignition ball is fixed to the pyrotechnic for fire transfer connected to the smoke fireball 15 at the place where the smoke is consumed, or the ignition ball is fixed to the explosive explosive 12 previously measured in a small bag. Then, after inserting into the launching cylinder 13, the connection work and the preparation for launching are carried out by a procedure such as inserting the smoke fireball 15. Further, the fixing method of the ignition ball to the fast-fired paper tube 9 is such that, in order to prevent an ignition mistake due to the ignition ball being pulled out, a notch is made at the end or in the middle of the paper tube 9 so that the. Generally, a method is adopted in which the adhesive is fixed with an adhesive tape after being inserted in the depth of about 05 m to 0.1 m.

  In the work of fixing the ignition ball, particularly the quick-fire wire 16 of the pyrotechnic for fire transfer has several core powders 10 in which black powder is impregnated with cotton yarn or the like in a single or double paper tube 9. When the ignition ball is inserted, there is a risk that the black powder in the paper tube 9 and the high-sensitivity ignition ball will come into direct contact with each other to cause friction and fire. Even when the ignition ball is inserted into and fixed to the sachet that is weighed, the explosive 12 such as the black small powder explosive and the igniting agent are in direct contact with each other, and the explosive 12 with the ignition ball after the fixation is placed in the launch tube 13. There is a risk that the frictional force between the black powder and the igniting powder will increase due to the load load of the ball when it is inserted into the upper part or the shock when it is accidentally dropped, or that the fire may be ignited by the load or shock. Rise.

The risk of frictional ignition when attaching an ignition ball to a fast flame has been pointed out so far, and a cylindrical fixture with both ends opened to the fast flame 16 in advance and impregnated with black powder when the ignition ball is installed. There is known an igniter that reduces friction with the fast-fired core medicine 10 and improves work efficiency (see, for example, Patent Document 1).
However, in this known igniter, it is difficult to completely prevent friction between the ignition ball from which the igniting agent is exposed and the fast-fired core powder 10 only by mounting a cylindrical body having both ends opened. No effect can be shown when the ignition ball is inserted and fixed in a small sized pouch 12.
On the other hand, there is also known an igniter in which a distal end side is sealed using a cylindrical fixture (see, for example, Patent Document 2).

According to these, the ignition ball exposed with the igniting agent and the fast-fired wire core agent 10 are not in direct contact with each other and friction does not occur. However, for the purpose of transferring heat to the surroundings with thin paraffin paper or the like and extinguishing the burning of the paper tube It is difficult to attach a fixture so that it does not come out to the end of the quick-fired paper tube 9 that has been made, and since it becomes a mounting part to the outer diameter part of the ignition ball, the outer diameter is further increased, and there is a concern about dropping off. It is difficult to insert the paper tube deeper into the paper tube. Even if the paper tube can be inserted, it is close to the mouth of the quick-fired paper tube 9, so that it may not be firmly fixed and may be dropped. Furthermore, since the diffusion of the flame is suppressed simply by sealing with the bottom plate, it is not possible to provide stable ignition with a loss of stable ignitability.
Japanese Patent No. 3001026 Japanese Utility Model Publication No. 6-30697

  The present invention ignites a pyrotechnic for fire transfer or a explosive in a safe and reliable manner when electrically igniting a struck fire or a work-in-hand fire in a place where smoke is consumed from a remote location. An object is to provide an electric igniter.

As a result of intensive studies to solve the above problems, the present inventor has found that the above object can be achieved by having a structure in which the vicinity of the bottom plate portion 6 of the igniter holding cylinder 1 is ruptured stably with an ignition power. The present invention has been made.
That is, the present invention is as follows.
1. And igniter holding cylinder body made of a resin material or rubber material, and ignition state powder or granules, and occluded embolic with the bridge conductive wire penetrates for transmitting ignition energy of said ignition agent holding cylindrical body In an electric igniter intended to ignite by fixing to a pyrotechnic or a direct explosive gunpowder to a smoke fire, the igniter holding cylinder is provided so that the bridge and the igniter are in close contact with each other. An electric igniter for smoke fires , which is fixed to the plug with electric bridge, and has a structure in which the ignition powder holding cylinder body has a bottom and the bottom plate portion and / or the peripheral side wall portion ruptures with an ignition power.
2. 1. The top corner or bottom plate of the ignition powder holding cylinder has an oblique inclination or a tapered shape. The electrical igniter for smoke fires described.
3. 1. There is a difference in thickness between the bottom plate portion and the peripheral side wall portion of the ignition powder holding cylinder. Or 2. An electric igniter for fireworks described in 1.
4). 1. The thickness of the peripheral side wall portion of the igniter holding cylinder becomes thinner as it goes toward the bottomed bottom plate portion. To 3. An electric igniter for smoke fires according to any one of the above.

5 . The ratio (L / D) of the length (L) of the igniter holding cylinder to the outer diameter (D) is in the range of 0.7 to 6.0, and is a vertically long cylinder. To 4 . An electric igniter for smoke fires according to any one of the above.

6 . 1 outer shape cylindrical, elliptic cylindrical, or the maximum outer diameter prismatic and feature is less than 0.005 m. To 5 . An electric igniter for smoke fires according to any one of the above.

  The electric igniter according to the present invention is used for fixing a fireworks or a direct explosive in order to electrically ignite sparks and in-situ fires at a place where smoke fires are consumed. In addition, since the igniting agent holding cylinder is bottomed, the igniting agent is not in direct contact with these explosive compositions, thereby improving safety and fixing the igniting agent holding cylinder to the plugged bridge. By having a structure and having a structure in which the vicinity of the bottom plate portion or the peripheral side wall portion is ruptured by the ignition power, there is an effect that the flame can be sufficiently diffused and ignited with high reliability.

The present invention will be specifically described below, particularly focusing on preferred forms thereof.
FIG. 1 is a schematic diagram in which a part of an electric igniter 11 such as an electric igniter for smoke or an electric lead wire of the present invention is cut out.
The electric igniter 11 includes an embedment plug 4 with an electric bridge in which an igniter holding cylinder 1, an igniter 2, a pair of parallel coated conductors 3 are penetrated, and an electric bridge 17 is welded to the tip, and is interlocked with an igniter or a computer. An electric energy is supplied from an ignition system (not shown), the electric bridge is heated through the conductor 3 and the surrounding ignition agent 2 around the electric bridge 17 is ignited. The igniting agent 2 emits a high-temperature flame and heat accompanied by hot particles, and ignites the explosives 12 such as a fast-fired wire 16 and a lead wire (not shown), a black pyrotechnic powder, etc. The smoke fireball 15 and the like are fired by the method shown in FIG. 11 and FIG.

  The plug 4 with the electric bridge is made of a thermoplastic resin such as polyethylene, polypropylene, polyvinyl chloride, nylon, and the parallel conductor 3 that transmits the ignition energy through the plug 4 with the electric bridge is made of Teflon (registered trademark), polyethylene, vinyl chloride. It is preferable that the core wire diameter be in the range of 0.0004 to 0.0007 m for this application. An electric bridge 17 made of a wire material such as platinum or nichrome embedded in resistance welding, friction bonding such as ultrasonic waves, or hook pinch is bridged at the tip of the parallel conducting wire 3 to supply energy of the igniter or ignition system. The resistance value suitable for is maintained.

  The igniting agent 2 that is ignited by the heat generated by the bridge uses lead thiocyanate-potassium chlorate, diazodinitrophenol, lead trinitroresorcin, and the like. Rodan lead is preferred. Furthermore, in order to improve the ignitability of pyrotechnics such as black explosives and explosive explosives, metallic powders such as zirconium, silicon, ferrosilicon, titanium, boron, aluminum, and magnesium are used as heat particle generating materials. It is preferable to add 0 to 10% by weight.

FIGS. 1-8 is sectional drawing which shows the Example of the ignition powder holding | maintenance cylinder 1. As shown in FIG.
By making the igniting powder holding cylinder 1 bottomed, the highly sensitive igniting powder 2 is directly applied to the explosive powder 12 such as the core powder of the pyrotechnics such as the quick-fire wire 16 and the lead wire, or the black small-powder powder. By not touching, it becomes possible to improve the safety of friction ignition and the like, and if it is completely sealed, the effect of preventing moisture intrusion can be obtained and long-term performance can be maintained. The bottomed portion 6 is more preferably made of the same material integrally molded with the igniter holding cylinder 1, but a different resin material, rubber material, or paper-like material is bonded and pasted in advance in a separate assembly process. It is also possible to keep it.

  The igniting agent holding cylinder 1 has a bottom so that a favorable effect of protecting the igniting agent can be obtained. It will be. Therefore, as shown below, a soft material is used, or a shape that easily concentrates stress on the local area, or a portion that is prone to actively and stably ruptures at the same location, such as by providing a difference in thickness, etc. It is necessary to give the structure.

  The igniting agent holding cylinder 1 is preferably formed by injection molding, and the material thereof is an ethylene vinyl acetate copolymer, an ethylene ionomer, a styrene, a polyester, among soft thermoplastic resin materials or rubber materials. Alternatively, either a polyolefin-based elastomer is preferable, and an ethylene-vinyl acetate copolymer or a styrene-based elastomer is more preferable because it is a particularly soft material. When the evaluation scale of the physical properties is slightly different depending on the resin material or rubber material, the characteristics may change depending on the temperature. For example, in the temperature range of room temperature, the tensile strength is preferably in the range of 1 to 30 MPa, and the durometer type In A hardness, the range of 1-100 is preferable. In particular, an ethylene vinyl acetate copolymer becomes a soft and well-ruptured material as the vinyl acetate content increases, preferably 1 to 50% by weight, more preferably 10 to 40% by weight.

  Further, in the known igniter, there is a case where the tip of the fixing member of the cylindrical body is slightly tapered so that the igniter can be easily inserted into the fast-fired paper tube 9. It is preferable to provide a part that is easily and stably ruptured at the same place as the shape that is easy to do. As shown in FIG. 2 or 3, it is preferable that the bottom plate portion 6 of the igniter holding cylinder 1 has an oblique inclination or a tapered shape, or the bottom plate portion 6 on the tapered top portion as shown in FIG. It is also possible to provide a slanted slope, a flat surface, or a rounded portion. In this way, a stress is easily concentrated on the local area near the top, that is, when the shape of the bottom plate portion 6 is inclined, the bending stress is applied to the top plate at the acute angle side, and when tapered, around the top of the center. Since this concentrates, the effect of making it easy to burst positively with ignition power is obtained. When the bottom plate 6 is inclined obliquely, the bottom plate top on the acute angle side is preferably angled in the range of 40 degrees to 80 degrees, more preferably in the range of 60 degrees to 70 degrees. When tapering, the central top is preferably angled in the range of 20 to 80 degrees, but more preferably in the range of 30 to 60 degrees so that the length of the tapered portion does not become too long.

  FIG. 3 is a sectional view showing an embodiment in which the igniter holding cylinder 1 is in accordance with claims 2 and 3. By making the bottom plate portion 6 of the igniter holding cylinder 1 thinner and thickening the peripheral side wall portion 5 so as to have a difference in thickness, stress is applied to the bottom plate top portion around the bottom plate portion 6 on the particularly acute angle side as described above. Can be concentrated, and the effect of making it easier to burst is obtained. When the peripheral side wall portion 5 has a thickness of, for example, 0.0005 to 0.0015 m, the thickness of the bottom plate portion 6 is preferably at least 0.0005 m or less as a thickness that can be easily ruptured and injection-molded. More preferably, it is 0.0003 m or less. When the bottom plate portion 6 is molded into a thin wall, pinholes and the like may be formed due to immature molding, peeling from the mold, welding due to poor gas escape, etc., depending on the characteristics of the selected material and molding conditions such as the mold structure. Careful selection of conditions and thickness are important.

FIG. 4 is a cross-sectional view of another embodiment in which the igniter holding cylinder 1 shows an embodiment according to claims 2 and 3, in which the apex angle portion is inclined obliquely and the bottom plate portion 6 is thinned so that the thickness difference It is also possible to make it easy to rupture the bottom plate portion 6 by providing.
FIG. 5 is a cross-sectional view showing an embodiment of the igniter holding cylinder 1 according to claims 2 to 4, and in addition to the above, in addition to the bottom plate part 6 of the igniter holding cylinder 1, the peripheral side wall part in contact with the bottom plate By making the wall thickness as thin as 7, it is possible to easily rupture the acute-angle side bottom plate corner portion concentrated in the above-described shape or the peripheral side wall portion 7 in contact with the bottom plate. The wall thickness difference between the thin wall portion and the thick wall portion is preferably within the above range, but the thickness of the bottom plate portion 6 and the peripheral side wall portion 7 in contact with the bottom plate may or may not be the same.

FIG. 6 is a sectional view of another embodiment in which the igniting powder holding cylinder 1 shows an embodiment according to claims 2 to 4, wherein a bottom plate portion 6 is provided at a tapered top portion, and the bottom plate portion 6 is made thinner and has a peripheral edge. In order to make the side wall 5 thicker and have a difference in thickness, and to make the vicinity of the bottom plate more easily ruptured, the peripheral edge in contact with the bottom plate, for example, by making a difference in inclination angle inside and outside toward the bottom plate 6 This is an example of a shape in which the side wall portion 7 and the peripheral side wall portion 5 have a thickness difference so that they become thinner toward the tip.
FIG. 8 is a schematic cutaway view showing an embodiment according to claim 8 of the electric igniter 11 of the present invention.

  As another method of making the ignition powder holding cylinder 1 molded by the injection molding method thinner to make it easy to explode with the power of ignition, it is a kind of molding method of thermoplastic resin, There is a vacuum molding method in which the material is heated and softened and the air between the sheet and the mold is taken out to form a vacuum state, and the thermoplastic resin by this molding method is amorphous or crystalline polyethylene Any one of terephthalate, polystyrene, polypropylene, and polyacrylonitrile is preferable, and more preferably, polystyrene is more thin and can be molded. The original thickness of the sheet is preferably 0.001 m or less, more preferably 0.0007 m or less, and even more preferably 0.0004 m or less, so that the thickness after being stretched by vacuum forming is greater than that obtained by injection molding. Furthermore, it can be made thin, and the effect of being easily ruptured is obtained.

However, in this molding method, the thinned portion is not limited to the bottom plate portion 6 of the igniter holding cylinder 1 and all the portions are thinned. However, the electric igniter 11 of the present invention is at least the quick-fired paper tube 9. It can be easily ruptured because it is very thin if it is pushed into the gunpowder 12 that has been weighed into the pouch to the extent that at least the portion of the igniter holding cylinder 1 is hidden. It can diffuse well and has good ignition performance.
On the other hand, the vicinity of the bottom plate portion 6 of the injection-molded or vacuum-molded ignition powder holding cylinder 1 or its peripheral portion is more easily ruptured, and in order to improve the ignitability, It is desirable to make the cylindrical body 1 difficult to scatter, and it is preferable to have a structure in which the igniter holding cylindrical body 1 is fixed to the plug 4 with the electric bridge.

  As a method for adhering the ignition powder holding cylinder 1 to the electric bridge-equipped plug 4, the fitting portion is bonded with an adhesive, or is friction-welded by ultrasonic waves, or the electric detonator is closed. A method of fixing with a material that is easily plastically deformed, a method of preventing the ignition powder holding cylinder 1 from being scattered using a fixing tool to the fast heating wire 16 such as a known ignition tool, and holding the ignition powder Although there is a method of increasing the fitting strength between the inner diameter of the fitting portion of the peripheral side wall portion 5 of the cylindrical body 5 and the outer peripheral edge of the fitting portion of the plug 4 with electric bridge, no additional components or joining facilities are required and the additional As a more preferable and reliable method that does not increase the maximum outer diameter with the constituent members, a concave or convex portion is formed on the inner side of the peripheral side wall portion 5 of the ignition powder holding cylinder 1 and a convex portion is protruded on the outer peripheral edge of the fitting portion of the plug 4 with the electric bridge. Alternatively, at least one recess is provided so that each position corresponds to the entire circumference. By forming a concave and convex molding processing part 8 called undercut molding, or by providing a structure that is fixed by applying a rough or embossed pattern on one side or both of the wall surfaces over the entire circumference. Assembling becomes easy and scattering of the ignition powder holding cylinder 1 can be more reliably prevented without adding a drying equipment, a welding equipment, or other parts.

In addition, a conventional ignition ball (not shown) is coated by applying a wet or mud igniter with an organic solvent or the like around the electric bridge bridged around the end of the parallel lead wire penetrating the embolus and dried. Since it is produced, it is difficult to adjust the coating amount, and facilities such as a drying facility and an exhaust device are required. On the other hand, in the electric igniter 11 of the present invention, the igniting agent 2 produced in the form of powder or granules in advance is used as the igniting agent. A fixed amount is filled into the holding cylinder 1 with a weighing machine and combined with the electric bridge-equipped plug 4 so that the number of processes is small and production is easy.
FIG. 9 is a schematic diagram for explaining a state in which the electric igniter 11 of the present invention is attached to the fast heating wire 16.

  As described above, the quick-fire wire, which is a pyrotechnic for heat transfer, is made of single or double thin paraffin paper or the like, and there are a number of core powders 10 in which black powder is impregnated with cotton thread in a paper tube 9. The inner diameter of the paper tube 9 is about 0.01 m, and the circumference is about 0.02 m. Therefore, when converted into a cylinder, the diameter is 0.0065 m. Since several core medicines 10 penetrate as described above, when the electric igniter 11 is cylindrical, the maximum outer diameter portion including the ignition powder holding cylinder 1 and the electric bridge-equipped plug 4 is 0.005 m or less. More preferably, it is 0.0045 m or less, and further preferably 0.004 m, so that the insertion into the fast heating wire 16 can be performed smoothly, and the friction with the core 10 can be reduced and made safe. It becomes possible. The outer shape of the electric igniter 11 is preferably a cylindrical shape in which restrictions on the direction of mass production are relatively reduced, but may be an elliptical cylinder shape or a prismatic shape (not shown). In this case, it is necessary to regulate both in all three directions when the plug 4 with the electric bridge and the ignition powder holding cylinder 1 are fitted.

  The ratio (L / D) between the length L of the igniter holding cylinder 1 shown in FIG. 2 and the maximum outer diameter portion D is within the range of 0.7 to 6.0 within the outer diameter range. It is preferable that When the length L is tapered as shown in FIG. 2, the length from the top to the end is referred to, and when the slant is inclined as shown in FIG. Length. For example, in the case of a minimum of 0.7, a case where the maximum diameter is the minimum dosage is conceivable, and the length L when the maximum outer diameter D is 0.005 m is 0.0035 m. Here, as described above, in order to easily rupture the vicinity of the bottom plate portion 6 of the igniting agent holding cylinder 1 or its peripheral portion and to improve the ignitability, the cylinder 1 is caused by the power during ignition. It is desirable to make it difficult to scatter, and the fitting strength between the inner diameter of the fitting portion of the peripheral side wall portion 5 of the cylindrical body 1 and the outer peripheral edge of the fitting portion of the plug 4 with electric bridge is increased or fixed by applying an undercut molding portion 8 In order to do so, the length of the fitting margin is required, and it is preferably 0.003 m or more.

  0.0035m, which is an example in the case of the L / D ratio of 0.7, considers the length of the fitting margin, and the ignition powder 2 is enclosed in the remaining length of 0.0005m. Therefore, the vertically long cylindrical shape is preferable. On the other hand, an example of the case of maximum 6.0 is considered to be the case of the minimum diameter and maximum dosage, and the length L is 0.024 m when the outer diameter D is 0.004 m. In this case as well, the length of the fitting margin is taken into consideration as described above, and the length of the fitting margin is preferably 0.5 times to 1.5 times the length of the chamber in which the ignition powder 2 is enclosed. Therefore, the length L of the ignition charge holding cylinder 1 is preferably 1.5 to 2.5 times the chamber length, which is the sum of the chamber length and the fitting margin. In this example, when the chamber length is 1.5 times the chamber length, the chamber length is 0.016 m, and the fitting margin length is 0.008 m. In other words, the length of the fitting margin for applying the undercut molding portion 8 and the like to make the ignition powder holding cylinder 1 difficult to scatter is preferably at least 0.003 m or more and 0.5 to 1 times the chamber length. The ratio (L / D) of the length L of the igniter holding cylinder 1 taking into consideration 5 times in advance and the maximum outer diameter portion D (L / D) may be a vertically long cylinder within a range of 0.7 to 6.0. preferable.

The present invention will be described based on examples.
[Example 1]
A cylindrical shape having an outer diameter of 0.004 mφ, the top plate 6 has a top angle of 70 degrees and an oblique inclination, the peripheral side wall 5 has a thickness of 0.0006 m, and the peripheral side wall 7 in contact with the bottom has a thickness of 0. 5. The igniter holding cylinder 1 injection-molded with ethylene-vinyl acetate copolymer resin having the shape shown in FIG. 5 having a thickness difference of 0.0002 m and a thickness of the bottom plate 6 is 0.0003 m. 30 mg of igniting agent 2 blended with 58% by weight of lead thiocyanate, 40% by weight of potassium chlorate, and 2% by weight of zirconium was measured and made of a polyethylene resin through which a parallel conductor 3 covered with a vinyl chloride resin penetrated. Assembled by connecting the end of a cylindrical embolus with an outer diameter of 0.004mφ to a plug with a bridge bridge 4 by cross-linking the platinum wire bridge 17 by ultrasonic bonding at the part that has been previously undercut. Electric igniter As shown in FIG. 9, 30 insertion strengths were evaluated when inserting 11 to the depth of 0.1 m from the end of a 0.3 m long quick-firing paper tube 9, and then fixed with a paper adhesive tape to ignite the test. Carried out.

Further, while 3 g of black small powder was measured in a paper bag, the end of the bag was pushed in to the extent that the plug 4 with the electric bridge of the electric igniter 11 was hidden, and 30 ignition tests were carried out.
Further, the diffusion direction of the flame of the electric igniter 11 was photographed with a video camera and observed.
Furthermore, imitating the friction when inserting and fixing the fast firing wire 16 or the explosive gunpowder 12 into the weighed sachet, and the load impact when the smoke fireball 15 is accidentally dropped after being inserted into the launch tube 13, Then, the ignition rate when the ignition part was dropped downward from a drop height of 1 m was confirmed.

The results of Example 1 are shown in Table 1.
As shown in Table 1, in Example 1, which is an example of the electric igniter 11 of the present invention, the maximum outer diameter was as small as 0.004 mφ, so that the quick hot wire insertion property was very good. In addition, the ignitability of the explosive powder 12 measured in the fast flame and the small pouch can be ignited completely without any problem, and the diffusion of the flame observed with a video camera is the bottom plate portion of the ignition powder holding cylinder 1 It was confirmed that 6 was surely ruptured and diffused radially in the forward direction. In the drop test on the concrete, there is no ignition at all, and the friction and impact on the igniter 2 are mitigated by the igniter holding cylinder 1 using a soft resin to be safe.

[Comparative Example 1]
Ignition produced by applying 10 mg of lead thiocyanate-potassium chlorate igniter with a maximum outer diameter of 0.005 mφ and a ball shape around a platinum wire bridge cross-linked to the tip of a parallel wire penetrating the embolus. The ball was carefully inserted into the fast firing line and fixed, and an ignition test was conducted.
The results of Comparative Example 1 are shown in Table 1. The insertability into the fast squib was not evaluated due to the risk of frictional ignition. Similarly, as a result of conducting an ignition test on black small explosives and observing the direction of flame diffusion, all of the ignition balls with almost exposed igniting powder can ignite all the fast firing lines and black small explosives, and the diffusion of flame The direction was also radiating radially forward.
Next, as a result of confirming the ignition rate when the igniter portion was dropped downward from a drop height of 1 m on concrete, it was confirmed that most of them ignited as shown in Table 1.

  The electric igniter of the present invention is highly safe and highly ignited when mounted and fixed to a pyrotechnic for fire transfer or direct gunpowder for remote electric ignition to a struck fire or a work-on-smoke fire. Since it has reliability, it can be suitably used for remote electric ignition of smoke fires.

The schematic diagram which notched some electric igniters 11 of this invention. The schematic diagram which the ignition powder holding cylinder 1 of the electric igniter 11 of this invention cut out a part of another form. Sectional drawing which shows one Example which the ignition powder holding cylinder 1 concerns on Claim 2, 3. FIG. Sectional drawing of another form which shows one Example which the ignition powder holding | maintenance cylinder 1 concerns on Claims 2 and 3. FIG. Sectional drawing which shows one Example which the ignition powder holding cylinder 1 concerns on Claims 2-4. Sectional drawing of another form which shows one Example which the ignition powder holding cylinder 1 concerns on Claims 2-4. The schematic diagram which notched one part which shows one Example which concerns on Claim 7 of the electric ignition tool 11 of this invention. The schematic diagram which notched a part which shows one Example which concerns on Claim 8 of the electric ignition tool 11 of this invention. The schematic diagram explaining the state which attached the electric ignition tool 11 of this invention to the quick-fire wire. The schematic diagram explaining the state which attached the electric ignition tool 11 of this invention to the explosive gunpowder 12. FIG. Sectional drawing explaining the state which attached the electric ignition tool 11 of this invention to the quick-fire wire, and was set to the launching cylinder 13. FIG. Sectional drawing explaining the state which attached the electric ignition tool 11 of this invention to the explosive gunpowder 12, and set to the launch cylinder 13. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ignition agent holding cylinder 2 Ignition agent 3 Conductor 4 Plug with electrical bridge 5 Peripheral side wall part 6 of ignition powder holding cylinder Bottom plate part 7 of ignition powder holding cylinder Peripheral side wall part 8 which contacts the bottom plate of ignition powder holding cylinder Uneven projection undercut molding part of gunpowder holding cylinder and plug with plug 9 Fast-fired paper tube 10 Fast-fired wire core 11 Electric igniter 12 Launching gun 13 Launching cylinder 14 Cylinder lid 15 Smoke-ball 16 Fast-fired wire 17 Electric bridge

Claims (6)

And igniter holding cylinder body made of a resin material or rubber material, and ignition state powder or granules, and occluded embolic with the bridge conductive wire penetrates for transmitting ignition energy of said ignition agent holding cylindrical body In an electric igniter intended to ignite by fixing to a pyrotechnic or a direct explosive gunpowder to a smoke fire, the igniter holding cylinder is provided so that the bridge and the igniter are in close contact with each other. An electric igniter for smoke fires , which is fixed to the plug with electric bridge, and has a structure in which the ignition powder holding cylinder body has a bottom and the bottom plate portion and / or the peripheral side wall portion ruptures with an ignition power. 2. The electric igniter for smoke fires according to claim 1, wherein the top corner portion or the bottom plate portion of the ignition powder holding cylinder has an oblique inclination or a tapered shape.   The electric igniter for fireworks according to claim 1 or 2, wherein there is a difference in thickness between a bottom plate portion and a peripheral side wall portion of the ignition powder holding cylinder.   The electric igniter for smoke fires according to any one of claims 1 to 3, wherein the wall thickness of the peripheral side wall portion of the ignition powder holding cylinder becomes thinner toward the bottomed bottom plate portion. The ratio (L / D) between the length (L) and the outer diameter (D) of the ignition powder holding cylinder is a vertically long cylinder within a range of 0.7 to 6.0. The electric igniter for fireworks according to any one of claims 4 to 4 . Outer shape cylindrical, elliptic cylindrical, or fireworks electric igniter according to any one of claims 1 to 5 maximum outer diameter prismatic shape and feature is less than 0.005 m.

Images