bird repelling small fireworks

Abstract

The bird repelling small firework provided by the application comprises a lower body cover, an upper body cover and an effect cylinder, the lower body cover is provided with an opening at the upper end, the effect cylinder is arranged inside the lower body cover, and the upper body cover covers the upper end of the lower body cover; the top of the effect cylinder is provided with a timing lead, and the inside of the upper body cover is provided with an ignition chip; the ignition chip comprises a circular substrate which is pressed from wood paper and degradable resin, a closed loop circuit is arranged on the lower surface of the circular substrate, a primer is arranged on the surface of the closed loop circuit, and a gap is arranged between the primer and the timing lead; the circular substrate of the bird repelling small firework is pressed from wood paper and degradable resin, and the volume of the residual fragments after explosion is small; since the wood paper and the degradable resin are both degradable materials, the bird repelling small firework does not cause long-term influence on the environment of the airport.

Description

Technical Field

[0001] This invention relates to the field of bird deterrence devices, specifically bird deterrence fireworks. Background Technology

[0002] Currently, various bird-repelling devices are used in military and civilian airports, as well as over sea areas. The use of firecrackers and titanium bombs are two of the most common and effective methods, primarily aimed at dispersing nearby birds through the sound and light generated by aerial explosions. However, existing bird-repelling munitions also present several practical problems. First, physical bird-repelling munitions require an open flame or electronic ignition head to ignite the propellant, necessitating specialized equipment for installation and ignition. This process requires professional personnel, is cumbersome, has low automation, and poor timeliness. Second, existing bird-repelling munitions must use black powder as propellant, which produces smoke upon combustion. Large-scale use of black powder can interfere with flight takeoffs and landings and is environmentally unfriendly. Third, existing magnetic ignition bird-repelling munitions rely on traditional electronic ignition head structures, using a heating resistance wire to ignite the propellant. However, the sensitivity of the propellant and the instability of the resistance wire lead to problems. The ignition success rate of this type of structure is not high, and the ignition propellant may even come into direct contact with other components. During the manufacturing process, there is a risk of accidental detonation due to friction and compression of the ignition propellant. Fourth, traditional bird deterrent munitions tend to produce large debris after exploding, affecting the airport's environmental conditions. Fifth, the materials used in the manufacture of traditional bird deterrent munitions contain non-degradable components such as plastics, which can pollute the airport environment when they explode and fall into the air. Finally, the circular substrate of the ignition chip in traditional bird deterrent munitions has a ring structure, so the ignition propellant attached to the circular substrate is susceptible to moisture, which affects the success rate of the bird deterrent munition's explosion. Summary of the Invention

[0003] In view of the above-mentioned problems in the prior art, the bird-repelling firework provided by the present invention is used to overcome the above-mentioned defects in the prior art.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is as follows:

[0005] Bird-repelling fireworks include a lower protective cover, an upper protective cover, and an effect tube. The lower protective cover has an opening at its upper end, the effect tube is located inside the lower protective cover, and the upper protective cover covers the upper end of the lower protective cover.

[0006] The top of the effect tube is provided with a timing lead, and the interior of the upper protective cover is provided with an ignition chip. The ignition chip includes a circular substrate made of wood paper and biodegradable resin. A closed-loop circuit is provided on the lower surface of the circular substrate. A gunpowder is provided on the surface of the closed-loop circuit, and a gap is provided between the gunpowder and the timing lead. When the upper protective cover moves along its axial direction and passes through a magnetic field, an induced electromotive force is generated in the closed-loop circuit, and an induced current closed-loop path is formed through the closed-loop circuit, which in turn heats up and ignites the gunpowder and the timing lead.

[0007] In one embodiment, a portion of the closed-loop circuit is narrower than the width of the other portions, and the gunpowder is located on the surface of the narrower portion of the closed-loop circuit.

[0008] In one embodiment, the center point of the closed-loop circuit is offset from the center point of the circular substrate.

[0009] In one embodiment, an annular fixing plate is further provided inside the upper protective cover. The upper surface of the fixing plate abuts against the lower surface of the circular substrate, the outer edge of the fixing plate abuts against the inner wall of the upper protective cover, the center point of the fixing plate coincides with the center point of the circular substrate, and the gunpowder is located at the center of the fixing plate.

[0010] In one embodiment, the outer surface of the gunpowder is coated with waterproof paint.

[0011] In one embodiment, the lower protective cover, the upper protective cover, and the effect cylinder are all cylindrical bodies, and the lower protective cover and the upper protective cover are made of wood-paper material.

[0012] In one embodiment, the axis of the circular substrate is arranged along the axial direction of the upper protective cover, and the closed-loop circuit is perpendicular to the axial direction of the upper protective cover.

[0013] In one embodiment, a rectangular or circular pressure relief hole is provided on the outer circumferential surface of the upper protective cover, and the pressure relief hole is located between the ignition chip and the effect tube.

[0014] In one embodiment, a sealing plate is provided at the lower end of the lower protective cover and the upper end of the upper protective cover, respectively. The lower end face of the sealing plate on the lower protective cover is located above or flush with the lower end face of the lower protective cover, and the upper end face of the sealing plate on the upper protective cover is located below or flush with the upper end face of the upper protective cover.

[0015] Compared with the prior art, the bird-repelling fireworks provided by the present invention have the following advantages:

[0016] First, the circular substrate of the ignition chip for the bird-repelling firework provided by the present invention is made of wood paper and biodegradable resin, and its finished product has a large hardness. Therefore, the volume of the fragments remaining after the explosion of the circular substrate is small. At the same time, since both wood paper and biodegradable resin are biodegradable materials, they will not have a long-term impact on the airport environment.

[0017] Secondly, the circular substrate of the ignition chip of the bird-repelling firework provided by the present invention is made of wood paper and biodegradable resin, which has a high hardness. Therefore, the circular substrate is not easily deformed during the production process, and the ignition powder attached to its surface will not easily fall off due to the deformation of the circular substrate, effectively improving and ensuring the success rate of the bird-repelling firework explosion.

[0018] Third, the circular substrate of the ignition chip of the bird-repelling firework provided by the present invention has a closed-loop circuit printed on it. At the same time, due to the material itself, it also has good waterproof and heat insulation effects. In addition, the outer surface of the ignition powder is also sprayed with waterproof paint, thus fully ensuring the environmental conditions of the ignition powder and avoiding the phenomenon of overheating leading to accidental ignition of the ignition powder or excessive moisture leading to failure of the ignition powder.

[0019] Finally, the ignition chip of the bird-repelling firework provided by the present invention is fixed by a fixing plate. At the same time, the center point of the fixing plate coincides with the center point of the circular substrate of the ignition chip, and the ignition powder is located at the center of the fixing plate. Therefore, the fixing plate not only fixes the ignition chip, but also does not cause inconvenience to the operation of attaching the ignition powder to the circular substrate.

[0020] The bird-repelling firework provided by this invention has no external ignition fuse and uses pneumatic launching, abandoning the traditional black powder launching method and employing non-contact electromagnetic pulse ignition. The entire product is made of environmentally friendly materials, and the debris produced after the explosion is almost completely burned and broken up, meeting airport FOD prevention requirements. The entire projectile is completely insulated and sealed, and will not be ignited by general vibration, compression, friction, or dropping. Even short-term open flame burning will not cause ignition, ensuring the safety of the bird-repelling firework during storage, transportation, and use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the ignition chip in this invention. Detailed Implementation

[0024] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0029] like Figure 1-3 As shown, for ease of description, the orientation references of "up", "down", "left", "right", "front" and "back" in this invention are attached. Figure 1 The directions shown are accurate;

[0030] Bird-repelling fireworks include a lower protective cover 1, an upper protective cover 2, and an effect tube 3. The lower protective cover 1 has an opening at the top, the effect tube 3 is located inside the lower protective cover 1, and the upper protective cover 2 covers the upper part of the lower protective cover 1.

[0031] The top of the effect tube 3 is provided with a timing lead 4, and the interior of the upper protective cover 2 is provided with an ignition chip 5. The ignition chip 5 includes a circular substrate 51 made of wood paper and biodegradable resin. A closed-loop circuit 52 is provided on the lower surface of the circular substrate 51. A gunpowder 6 is provided on the surface of the closed-loop circuit 52, and a gap is provided between the gunpowder 6 and the timing lead 4. When the upper protective cover 2 moves along its axis and passes through a magnetic field, an induced electromotive force is generated in the closed-loop circuit 52, and an induced current closed-loop path is formed through the closed-loop circuit 52, which in turn heats up and ignites the gunpowder 6 and the timing lead 4. After a certain period of time, the effect tube 3 is ignited to achieve the effect of an explosion.

[0032] For example, when using the bird-repelling cannon provided by patent number 202121237438.3 to fire the bird-repelling fireworks provided by this invention, the ignition chip 5 will move with the bird-repelling fireworks, and the direction of movement is the axial direction of the upper protective cover 2. When the bird-repelling fireworks pass through the magnetic field generated by the relevant device on the bird-repelling cannon, the closed-loop circuit 52 of the ignition chip 5 will generate an induced electromotive force under the action of the magnetic field. The generated induced electromotive force will form an induced current closed-loop path through the closed-loop circuit 52. After the closed-loop path is formed, the narrower part of the closed-loop circuit 52 can quickly heat up to ignite the gunpowder 6. The gunpowder 6 burns to produce flames, which then ignite the timing fuse 4, and then ignite the effect tube 3. This realizes the operation of igniting the effect tube 3 inside the bird-repelling fireworks while they are moving. The timing fuse 4 will continue to burn during the movement of the bird-repelling fireworks. After a certain period of time, it will ignite the explosive in the effect tube 3, thus realizing the control of the detonation time of the bird-repelling fireworks.

[0033] For example, the bird-repelling cannon provided by patent number CN202110619635.X includes a launching tube with a projectile movement channel inside, which is connected to the outside through the outlet end of the launching tube; it also includes a launching device that can drive the bird-repelling fireworks located in the projectile movement channel to move along the axial direction of the launching tube so as to be launched to the outside through the outlet end; it also includes an energy storage unit that can be connected to an external power source to store energy; and it also includes a magnetic field generating unit that is located outside the launching tube and connected to the energy storage unit. The energy storage unit provides the stored energy to the magnetic field generating unit so that the magnetic field generating unit generates an ignition magnetic field in the projectile movement channel, and the electromagnetic induction fuse of the bird-repelling fireworks can be instantly ignited by the ignition magnetic field.

[0034] The bird-repelling fireworks provided by this invention can be pneumatically propelled to high altitudes. Before the fireworks leave the launch tube, a non-contact ignition of the timing fuse 4 can be achieved through an external magnetic field. When the fireworks reach a certain altitude, the timing fuse 4 inside the fireworks will contact the explosive material in the explosive chamber and cause an explosion. The bird-repelling fireworks provided by this invention use a pneumatic driving method, which can more precisely control the ascent height of the fireworks and can be flexibly changed according to different usage scenarios and needs. For example, the ascent height of the fireworks can be controlled by precisely controlling the pressure of the driving gas.

[0035] In this embodiment, the gunpowder 6 and the effect tube 3 on the ignition chip 5 are not in contact, but are respectively bonded to the inside of the upper protective cover 2 and the lower protective cover 1. An ignition chamber is formed in the gap between the ignition chip 5 and the effect tube 3 inside the projectile. The ignition chip 5 and the effect tube 3 are manufactured and installed separately. The gunpowder 6 is protected in the upper protective cover 2 throughout the entire production and assembly process and is not subject to friction or impact from external forces.

[0036] In this embodiment, in order to ensure that the gunpowder 6 can be ignited quickly, the width of one part of the closed-loop circuit 52 is designed to be smaller than the width of the other parts. The gunpowder 6 is designed to be located on the surface of the narrower part of the closed-loop circuit 52. Therefore, when an induced current appears in the narrower part of the closed-loop circuit 52, that part will heat up quickly and ignite the gunpowder 6.

[0037] In this embodiment, the center point of the closed-loop circuit 52 is offset from the center point of the circular substrate 51;

[0038] Furthermore, an annular fixing piece 8 is provided inside the upper protective cover 2. The upper surface of the fixing piece 8 abuts against the lower surface of the circular substrate 51, and the outer edge of the fixing piece 8 abuts against the inner wall of the upper protective cover 2 to fix the circular substrate 51. The center point of the fixing piece 8 coincides with the center point of the circular substrate 51. The gunpowder 6 is located at the center of the fixing piece 8. Because of the presence of the fixing piece 8, the fixing piece 8 will inevitably block part of the area of ​​the lower surface of the circular substrate 51. Therefore, the closed-loop circuit 5 adopts an eccentric design scheme, which can ensure that the gunpowder 6 is located at the center of the circular substrate 51 and the fixing piece 8, which facilitates the subsequent operation of attaching the gunpowder 6 to the circular substrate 51.

[0039] Utilizing the principle of electromagnetic induction, the closed-loop circuit 52 of the ignition chip 5 instantly generates an induced current when passing through a magnetic field, thereby rapidly raising the temperature of the narrower part of the closed-loop circuit 52 to the ignition point of the gunpowder 6, which in turn ignites the timing fuse 4. The closed-loop circuit 52 of the ignition chip 5 enables the bird-repelling fireworks to be rapidly ignited when passing through a magnetic field during launch, achieving efficient ignition. This allows the bird-repelling fireworks to be launched first and then ignited, providing more possibilities for the application scenarios of bird-repelling fireworks.

[0040] In this embodiment, in order to further improve the moisture-proof effect of the gunpowder 6, a waterproof paint is sprayed on the outer surface of the gunpowder 6.

[0041] In this embodiment, the lower protective cover 1, the upper protective cover 2, and the effect cylinder 3 are all circular cylindrical bodies. The lower protective cover 1 and the upper protective cover 2 are made of wood-paper material. Furthermore, the axis of the circular substrate 51 is set along the axial direction of the upper protective cover 2, and the closed-loop circuit 52 is perpendicular to the axial direction of the upper protective cover 2. The circular plate-shaped closed-loop circuit 52 is the shape most sensitive to electromagnetic induction phenomena and also the shape that makes the closed-loop circuit 52 heat up the fastest. The closed-loop circuit 52 can be a copper circular plate-shaped structure, or other conductor materials can be selected. More importantly, the circular plate-shaped structure, while ensuring the closed-loop circuit, can ensure both the largest electromagnetic induction end face area and the smallest ignitable volume. The smaller the ignitable volume, the faster the heating and the higher the maximum temperature reached. In addition, the circular plate-shaped structure is small in size and is basically completely shattered after the bird-repelling fireworks explode, leaving no large solid residue.

[0042] In this embodiment, two rectangular pressure relief holes 9 are provided on the outer circumferential surface of the upper protective cover 2. The two pressure relief holes 9 are symmetrically arranged with respect to the central axis of the upper protective cover 2, and the two pressure relief holes 9 are located between the ignition chip 5 and the effect tube 3. By providing pressure relief holes 9 on the side wall of the upper protective cover 2, the smoke and heat generated when the gunpowder 6 and the timing fuse 4 are burning can be discharged in time, avoiding the phenomenon that the upper protective cover 2 will fall off due to the smoke and heat generated when the gunpowder 6 and the timing fuse 4 are burning before the effect tube 3 explodes. At the same time, the gap between the ignition chip 5 and the effect tube 3 forms an ignition chamber. The two pressure relief holes 9 are located between the ignition chip 5 and the effect tube 3. The two pressure relief holes 9 are actually set on the side wall of the ignition chamber to balance the pressure inside and outside the product after the gunpowder 6 is ignited.

[0043] In this embodiment, a sealing plate 10 is provided at the lower end of the lower protective cover 1 and the upper end of the upper protective cover 2. The lower end face of the sealing plate 10 on the lower protective cover 1 is above the lower end face of the lower protective cover 1, and the upper end face of the sealing plate 10 on the upper protective cover 2 is below the upper end face of the upper protective cover 2. By setting the lower protective cover 1, the upper protective cover 2 and the sealing plate 10, the ignition chip 5 and the effect tube 3 can be well protected inside, which can prevent accidental ignition by open flame or squeezing and friction from causing the bird-repelling fireworks to explode accidentally, greatly improving the safety of the entire bird-repelling fireworks production and use.

[0044] First, the circular substrate 51 of the ignition chip 5 for the bird-repelling firework provided by the present invention is made of wood paper and biodegradable resin. The finished product has high hardness and thinness. Therefore, the circular substrate 51 is easy to break during the explosion, and the remaining fragments after breaking are small in volume. At the same time, since both wood paper and biodegradable resin are biodegradable materials, and the lower protective cover 1 and the upper protective cover 2 are made of wood paper, the debris remaining after the explosion will not have a long-term impact on the airport environment even if it is not cleaned up.

[0045] Secondly, the circular substrate 51 of the ignition chip 5 of the bird-repelling firework provided by the present invention is made of wood paper and biodegradable resin. Its finished product has a large hardness. Therefore, the circular substrate 51 is not easy to deform during the production process. As a result, the gunpowder 6 attached to its surface will not fall off easily due to the deformation of the circular substrate 51, which effectively improves and ensures the success rate of the bird-repelling firework explosion.

[0046] Third, the circular substrate 51 of the ignition chip 5 for the bird-repelling firework provided by the present invention does not have through holes. At the same time, due to the material itself, it has good waterproof and heat insulation effects. In addition, the outer surface of the gunpowder 6 is also coated with waterproof paint. Therefore, the environmental conditions of the gunpowder 6 are fully guaranteed, avoiding the phenomenon that the gunpowder 6 will be accidentally ignited due to overheating or that the gunpowder 6 will not be able to be ignited due to excessive moisture. This ensures the success rate of the bird-repelling firework.

[0047] Finally, the ignition chip 5 of the bird-repelling firework provided by the present invention is fixed by the fixing piece 8. At the same time, the center point of the closed-loop circuit 52 on the circular substrate 51 of the ignition chip 5 is offset from the center point of the circular substrate 51. The center point of the fixing piece 8 coincides with the center point of the circular substrate 51. The gunpowder 6 is located at the center of the fixing piece 8. Therefore, the fixing piece 8 not only fixes the ignition chip 5, but also does not block the position of the gunpowder 6, thus facilitating the attachment of the gunpowder 6 to the circular substrate 51.

[0048] The bird-repelling fireworks provided by this invention pass through a specific magnetic field at high speed without contact. The ignition chip 5, under the thermal effect of eddy currents, ignites the charging powder 6 on the ignition chip 5, further igniting the effect tube 3 and causing an explosion in the air. This ensures that the charging powder 6 and the effect tube 3 are only ignited when in motion and passing through a specific magnetic field, greatly improving the safety of the product's ignition. The bird-repelling fireworks provided by this invention utilize gas emission, eliminating the need for black powder as a propellant. They employ electromagnetic induction ignition, and the charging powder 6 and effect tube 3 are spaced apart, making the production, transportation, and storage of these fireworks safer. After ignition, all components are completely shattered, and all components are made of environmentally friendly and biodegradable materials.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. Bird-repelling firework, characterized in that, It includes a lower protective cover, an upper protective cover, and an effect tube. The lower protective cover has an opening at its upper end, the effect tube is disposed inside the lower protective cover, and the upper protective cover covers the upper end of the lower protective cover. The top of the effect tube is provided with a timing lead, and the interior of the upper protective cover is provided with an ignition chip. The ignition chip includes a circular substrate made of wood paper and biodegradable resin. A closed-loop circuit is provided on the lower surface of the circular substrate. A gunpowder is provided on the surface of the closed-loop circuit, and a gap is provided between the gunpowder and the timing lead. When the upper protective cover moves along its axial direction and passes through a magnetic field, an induced electromotive force is generated in the closed-loop circuit, and an induced current closed-loop path is formed through the closed-loop circuit, which in turn heats up and ignites the gunpowder and the timing lead. The upper protective cover is further provided with an annular fixing plate inside. The upper surface of the fixing plate abuts against the lower surface of the circular base plate, the outer edge of the fixing plate abuts against the inner wall of the upper protective cover, the center point of the fixing plate coincides with the center point of the circular base plate, and the gunpowder is located at the center of the fixing plate.

2. The bird-repelling firework according to claim 1, characterized in that, One portion of the closed-loop circuit is narrower than the other portions, and the gunpowder is located on the surface of the narrower portion of the closed-loop circuit.

3. The bird-repelling firework according to claim 2, characterized in that, The center point of the closed-loop circuit is offset from the center point of the circular substrate.

4. The bird-repelling firework according to claim 1, characterized in that, The outer surface of the gunpowder is coated with waterproof paint.

5. The bird-repelling firework according to claim 1, characterized in that, The lower protective cover, upper protective cover, and effect cylinder are all cylindrical bodies, and the lower protective cover and upper protective cover are made of wood-paper material.

6. The bird-repelling firework according to claim 5, characterized in that, The axis of the circular substrate is arranged along the axial direction of the upper protective cover, and the closed-loop circuit is perpendicular to the axial direction of the upper protective cover.

7. The bird-repelling firework according to claim 1, characterized in that, The outer circumferential surface of the upper protective cover is provided with a rectangular or circular pressure relief hole, and the pressure relief hole is located between the ignition chip and the effect tube.

8. The bird-repelling firework according to claim 1, characterized in that, The lower end of the lower protective cover and the upper end of the upper protective cover are respectively provided with sealing plates. The lower end face of the sealing plate on the lower protective cover is above the lower end face of the lower protective cover or flush with the lower end face of the lower protective cover. The upper end face of the sealing plate on the upper protective cover is below the upper end face of the upper protective cover or flush with the upper end face of the upper protective cover.

Images