JP2001171595A - Shark preventing implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shark prevent implement with a simple structure and a high practical use capable of preventing a person landed on the water or a drifting person from an attack of the shark. SOLUTION: The shark prevent implement comprises a bag body comprising an electric insulation material such as a resin, a rubber, etc., and having a volume in which one or more person can be accommodated. In this tool, a buoyancy part capable of sealingly filling an air in an opening of the bag body is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective device suitable for concealing a person who has landed or drifted on the sea from a shark attack.

[0002]

2. Description of the Related Art Every year, shark attacks in the ocean cause many precious lives to be lost. This accident has occurred during work such as various exploration and collection in the sea and on the sea floor, when drifting away from a sinking ship, and when landing and drifting due to an accidental landing of an aircraft on the sea surface. In the past, measures to prevent shark attacks have typically included hanging heavy cages under the sea or placing them on the bottom of the water, but such measures may be reasonable in cases where the attack can be dealt with in advance. Although effective, there is a problem that it cannot be applied to sudden cases such as landing and drifting as described above.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to protect a person landing or drifting in the sea from a shark attack. An object of the present invention is to provide a highly practical shark protector with a simple structure that can be used.

[0004]

In order to achieve the above object, the present invention comprises a bag made of an electrically insulating material such as resin or rubber and having a volume in which one or more humans can enter. It is characterized in that a buoyancy part capable of filling air is provided in the opening. Preferably, the bag is opaquely colored so that the shark will not be visually perceived when migrating nearby.

[0005]

[Effect] Conventionally, shark foraging functions include visual, auditory,
It was believed to be taste and tactile, and it was believed that sharks found food predominantly due to their excellent sight and smell. However, as a practical matter, the transmission distance of light in water is 500 m or less because the most efficient light around 525 nm is attenuated to 0.005 lux or less at around 80 m under the highest transparency condition. It cannot be seen from a distance of 1000m.
Even if the smell is developed, the odor does not flow on the tide of the ocean current, and even if it flows under the tide, it becomes 50 cm per second when the water flow is 1 knot, and it takes 60 cm to reach the distance of 1 knot.
It takes more than a minute, and it is unlikely that sharks as far as 1 km will collect in a few minutes after landing. Also, it is clear that even with improved hearing, no castaway can be found quiet underwater.

Accordingly, the present invention focuses on the other of the five senses described above for the shark's foraging function, that is, the Lorenzini organ which senses biogenerated electricity generated by animals, so that it is not perceived by this. Things. According to the present invention, the biologically generated electricity generated when moving, swimming, or changing postures in water is prevented from leaking to the outside by humans entering a bag made of an electrically insulating material such as resin rubber. It is prevented from being perceived by the shark's Lorenzini organ and can be free from shark attacks. And since the buoyancy part which can be air-filled is provided in the opening part of the bag body, even if the person in the inside is bleeding, the spread of the blood can be prevented and the approach by the smell of the shark can be prevented.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 and 2 show one embodiment of a shark protective gear according to the present invention. 1 is a bottom wall 10 and a side wall 1
1 and has a diameter and depth that allow at least one person H to enter and move the body freely to some extent. The bag is made of an electrically insulating sheet typified by rubber and synthetic resin, and has a sufficient thickness to prevent the bio-generated electricity generated by the movement of the human H entering the body from leaking to the outside. Since the shark 1 is not visually perceived when the shark moves nearby, the bottom wall 1
0 and the side wall 11 are opaquely colored.

Further, at the opening of the bag 1, a buoyancy portion 12 which can be filled with air by forming an electrically insulating sheet into a double structure or the like is provided over the entire circumference. At least a part is provided with an air blowing unit 13. A check valve 14 is provided inside the air blowing section 13. If necessary, a grip string or the like made of an electrically insulating material may be attached to the side wall portion 11 of the bag body 1.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The shark protective equipment according to the present invention is equipped on a ship or an aircraft as an emergency evacuation tool together with a life jacket and the like. ) Can be folded compactly. In case of emergency, for example, when a ship is distressed, accidentally dropped from the ship to the sea surface, or when an aircraft is accidentally landed, immediately spread the bag 1 after landing,
It suffices if the body is put inside, the air is blown in from the air blowing unit 13 and sealed, and the bag is floated on the water surface inside the bag 1 and waits for rescue.

In this case, since the buoyancy portion 12 expands due to the enclosing of air from the air blowing portion 13, the bag body 1 stably floats on the sea while storing the seawater w, and the human H who has landed has bleed. Even in this case, the blood stays in the seawater inside the bag 1 and does not diffuse into the seawater W outside the bag 1, so that the attack of the shark by the sense of smell can be prevented. Further, since the bag 1 is colored in an opaque color, it is not visually sensed when the shark moves around.
And the human H moves or swims inside the bag 1,
Even when the posture is changed, bio-generated electricity is generated, and since the bag 1 is an electrically insulating material, the bio-generated electricity is prevented from being radiated and propagated into the outside sea, and electrically connected to the outside. It is kept off. For this reason, since it is sensed by the organ of Mr. Lorenzini of the shark, the shark is securely hidden, and it is possible to prevent the attack of the shark.

[0011]

According to the present invention described above, the bag 1 is made of an electrically insulating material such as resin or rubber and has a volume that allows at least one person to enter therein. The provision of the buoyant portion 12 capable of being enclosed makes it possible to reliably protect the shark from being attacked by Lorenzini's organ, which senses biogenerated electricity generated by the animal. Since it stays in the seawater inside the bag 1 and does not diffuse to the outside of the bag 1, it is possible to prevent a shark attack by the sense of smell.
Moreover, an excellent effect is obtained in that the structure is simple and the storage can be made compact when not required. According to the second aspect, since the bag body is further colored opaquely, an excellent effect is obtained in that it is possible to prevent visual perception when the shark moves around.

[Brief description of the drawings]

FIG. 1 (a) is a plan view showing an example of a shark protective tool according to the present invention in a retracted state, and FIG. 1 (b) is a partially cutaway perspective view showing a state in use.

FIG. 2 is a cross-sectional view showing a condition during use of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag body 12 Buoyancy part 13 Air blowing part

Claims (2)

[Claims] 1. A bag body made of an electrically insulating material such as resin or rubber and having a volume in which one or more humans can enter.
A shark protection tool, wherein a buoyancy part capable of filling air is provided in an opening of the bag. 2. The shark protective equipment according to claim 1, wherein the bag is opaquely colored.