JP2002216254A - Position indicating marker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a position indicating marker capable of indicating a position on a water surface over a long period. SOLUTION: This position indicating marker is provided with a first water surface coloring means which immediately colors the water surface after landing on the water, and a second water surface coloring means which continuously colors the water surface over a long period after landing onto the water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marker for displaying a position, and more particularly, to an ocean or river from an aircraft or a ship.
The present invention also relates to a position display marker which is preferably used for displaying a specific position on the water surface by dropping it on a water surface such as a lake. The present invention particularly displays the specific position on the water surface for a long time by coloring the water surface so as to be visible from the sky, not only immediately after the water landing but also for a long time after the water landing. The present invention relates to a position display marker that can be used.

[0002]

2. Description of the Related Art When a distress accident or the like occurs on the sea, a search is mainly performed from the sky using an aircraft.

[0003] However, since there are no objects or the like on the sea surface that can normally be landmarks, even if a victim can be found, the position where the victim is located is specified, and a rescue squad is provided.
It is extremely difficult to transmit the position instantly and accurately.

[0004] As a method of specifying a position where a victim is present and displaying the position, a method of specifying the position by latitude and longitude can be considered.

[0005] However, since only the approximate position of the victim can be specified depending on the latitude and longitude, the rescue team needs to visually confirm the position of the victim at last, but finds the victim visually. It is not easy.

[0006] Therefore, even in this case, it is inevitable to spend a considerable amount of time searching for the victim, and rescue may be too late. Further, even if the victim can be found once, the victim may be lost while turning over the sky.

[0007] Therefore, if an object emitted from an aircraft or a ship can be marked at a specific position on the sea surface with a mark that can be clearly and easily recognized even from above or from a high place, rescue operation or the like is performed. Above is very convenient.

The present invention has been made for the above reasons. An object of the present invention is to provide a position display marker that is preferably used in an application in which a specific position on a water surface is displayed by being dropped from an aircraft or a ship onto a water surface such as the sea surface.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and comprises a first colorant.
A colorant container having a colorant release port for releasing the first colorant, a lid for covering the colorant release port, and, at the time of landing on water, the first colorant from the inside of the colorant container. A first water surface coloring means having a colorant releasing means for releasing to the outside of the colorant container, and a second colorant formed in a lump are accommodated, and are coupled or connected to the colorant container at the time of landing. And a second water surface coloring means having a water permeable container that is held in water in a state where the marker is placed.

[0010] In a preferred embodiment of the position display marker, for example, a water-permeable container in the second water surface coloring means is formed so as to surround the colorant container. A marker for position indication, further comprising a buoyancy imparting means for holding the first water surface coloring means in a state of floating on the water surface or in a state of standing still in water, and wherein the buoyancy imparting means comprises a colorant release means in the colorant container. A position display marker, which is a buoyancy member formed around a portion near the exit,
A position display marker, which is a buoyancy member formed so as to lose buoyancy at the time when the elution of the second coloring agent from the water surface coloring means is completed, and water which collapses when the buoyancy member comes in contact with water for a certain time. The position indicating marker according to claim 6, wherein the marker is a disposable buoyancy member, and the water disintegrable buoyancy member is formed from pulp hardened with a water-soluble glue.

A marker for displaying a position, wherein the colorant releasing means includes colorant biasing means for biasing the first colorant in a direction toward the colorant discharging port; In the vicinity of the bottom of the colorant container, a piston slidably provided inside the colorant container, a release agent contained between the bottom of the colorant container and the piston, and when wet with water A position display marker comprising ignition means for igniting the discharged medicine, and a seawater battery which generates an electromotive force when the ignition means comes into contact with fresh water or seawater, and between the piston and the bottom of the colorant container. And a position display marker that is electrically connected to the seawater battery and includes an ignition unit that induces combustion of the discharged medicine by a current from the seawater battery.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Specific Example Hereinafter, an example of the position display marker according to the present invention,
A ball marker having a ball shape will be described with reference to the drawings.

FIG. 1 shows a half cutaway view of the configuration of the ball marker.

As shown in FIG. 1, the ball marker 1 includes a float 2 having a hemispherical shape and a water-permeable container 3 having a hemispherical shape.

The float 2 is a float formed from pulp hardened with a water-soluble paste, and is formed so as to dissolve in water and lose buoyancy when the solid colorant C2 described below is completely eluted into water. Have been. On the other hand, the permeable container 3
Is formed from a wire mesh.

The float 2 and the water-permeable container 3 are
As shown in FIG. 1, they are joined together in a cut plane to form a sphere. A disk-shaped partition plate 5 is disposed between the float 2 and the water-permeable container 3. Partition plate 5
Is fixed to the cut surface of the float 2 by a wood screw 15.

The center of the float 2 and the water-permeable container 3 has a cylindrical shape with both ends opened along the diameter of a sphere formed by the float 2 and the water-permeable container 3. The agent storage cylinder 4 penetrates.

In the space formed by the water-permeable container 3, the colorant-containing cylinder 4 and the partition plate 5, a solid colorant formed by solidifying a powdery colorant containing soluble fluorescein as a main component with a binder and molding into a lump. C2 is accommodated. The surface of the solid colorant C2 is covered with a water-soluble synthetic resin film.

As shown in FIG. 1, a disc-shaped shelf plate 7 is fitted to an end of the colorant accommodating cylinder 4 on the side of the water-permeable container 3.

The shelf 7 in the colorant storage cylinder 4
The end opening on the side opposite to the side on which is fitted is a colorant discharge port 42 from which a colorant powder C1 described later is discharged, and is covered with a lid 6 formed of a plastic film. The lid 6 is adhered to the periphery of the colorant discharge port 42.

A piston 8 that slides inside the colorant storage cylinder 4 is provided between the shelf plate 7 and the lid 6 inside the colorant storage cylinder 4.

The solid colorant C is provided between the piston 8 and the lid 6 inside the colorant storage cylinder 4.
Colorant powder C similar to the powdery colorant described in 2 above
1 is accommodated, and between the piston 8 and the shelf plate 7, an explosive E made of a generally used explosive, for example, a black explosive is accommodated.

Between the piston 8 and the shelf plate 7, there is further provided an igniter 1 which, when energized, induces the combustion of the release agent E.
1 is housed. The igniter 11 is provided with the discharged medicine E
Is surrounded by The igniter 11 includes an electric bridge formed of a platinum wire and an ignition charge surrounding the electric bridge.

A seawater battery 9 is mounted on the surface of the shelf 7 opposite to the side facing the piston 8. The seawater battery 9 operates when it comes into contact with fresh water or seawater to generate an electromotive force. The seawater battery 9 is electrically connected to a bridge in the ignition unit 11 by a pair of electric wires 10.

Further, an annular bottom plate 13 is fitted on the colorant accommodating cylinder 4 at a position facing the shelf plate 7 with the seawater battery 9 interposed therebetween. An annular packing 14 is fitted into the opening of the bottom plate 13.

The bottom plate 1 in the colorant storage cylinder 4
A pair of slits 41 are formed nearer to the end than in a plane perpendicular to the axis of the colorant storage cylinder 4. The closing plate 12 that covers the opening of the bottom plate 13 from the outside in an airtight manner is inserted into the slit 41. The closing plate 12 comes into contact with the packing 14 while being inserted into the slit 41. This bottom plate 1
3 is hermetically closed by the closing plate 12 via the packing 14, so that the space formed by the shelf plate 7, the inner wall of the colorant accommodating cylinder 4 and the bottom plate 13, ie, the seawater battery. Space (seawater battery housing space) becomes airtight, and even if this position display marker is stored for a long period of time, external moisture does not enter the seawater battery housing space. Therefore, malfunction due to moisture in the seawater battery is prevented.

FIG. 2 shows a plan view of the closing plate 12.
As shown in FIG. 2, the closing plate 12 is a plate-like member having a substantially rectangular shape. A pull 121 having a D-shape is provided on one of the pair of short sides of the closing plate 12. The short side of the closing plate 12 opposite to the short side where the pull 121 is provided is curved outward in a semicircular shape.

In the ball marker 1, the float 2
Corresponds to the buoyancy imparting means in the aspect having the buoyancy imparting means among the position display markers of the present invention. The water permeable container 3 corresponds to a water permeable container provided in the second water surface coloring means in the position display marker of the present invention. The chamber formed by the colorant accommodating cylinder 4, the shelf plate 7, and the lid 6 corresponds to a colorant container included in the first water surface coloring means in the position display marker of the present invention, and the shelf plate 7 is a colorant. Corresponds to the bottom of the container. The colorant discharge port 42 corresponds to a colorant discharge port in the colorant container. The lid 6 corresponds to a lid in the first water surface coloring means. The piston 8, the seawater battery 9, the electric wire 10, the ignition unit 11, and the release agent E correspond to a colorant release unit in the first water surface coloring unit.
The seawater battery 9, the electric wire 10, and the ignition unit 11 correspond to ignition means in the present invention. The colorant powder C1 corresponds to the first colorant in the position display marker of the present invention, and the solid colorant C2 corresponds to the second colorant in the position display marker of the present invention.
Of the colorant.

The operation of the ball marker 1 will be described below.

When the ball marker 1 is dropped on the water surface from an aircraft or a ship, first, the closing plate 12 is pulled out from the slit 41 and dropped on the water surface.

When the ball marker 1 lands on the water, it floats on the water surface with the float 2 positioned above and the water permeable container 3 positioned below. Therefore, the colorant discharge port 42 in the colorant storage cylinder 4 faces upward. At this time, the water permeable container 3 is in a state of submerging below the water surface.

Accordingly, water enters the seawater battery housing space inside the colorant housing cylinder 4 from the circular opening in the bottom plate 13, and the water comes into contact with the seawater battery 9. As a result, an electromotive force is generated in the seawater battery 9, and the ignition unit 1 is connected to the seawater battery 9 through the conducting wire 10.
1 flows, and the ignition part 11 ignites.

When the igniter 11 is ignited, the discharge agent E burns and a large amount of combustion gas is rapidly generated, and the combustion gas pushes the piston 8 toward the colorant discharge port 42 vigorously. Blow off the outside of the agent storage cylinder 4. As a result, the colorant powder C <b> 1 stored in the colorant storage cylinder 4 is also discharged from the colorant discharge port 42 upward in a vigorous manner. Since the lid 6 is formed of a plastic film as described above, the colorant powder C1 is broken by the force released from the colorant discharge port 42.

As described above, the colorant powder C1 is discharged from the colorant storage cylinder 4 immediately upon the landing of the ball marker 1, so that the location where the ball marker 1 has landed and the surrounding water surface are Due to the soluble fluorescein contained in the colorant powder C1, it is strongly colored red-yellow with yellow-green fluorescence.

On the other hand, as described above, since the water-permeable container 3 is immersed in water, water penetrates through the wire mesh of the water-permeable container 3 and comes into contact with the solid colorant C2. Since the water-soluble synthetic resin film is formed on the surface of the solid colorant C2 as described above, water penetrates into the solid colorant C2 while gradually dissolving the water-soluble synthetic resin film. The binder which solidifies the powdery colorant and the powdery colorant are dissolved. Therefore, since the powdered colorant is gradually eluted from the water-permeable container 3, the water surface of the ball marker 1 at the place where the ball marker 1 has landed and its surroundings has been released from the colorant storage cylinder 4. Even after the colorant powder C1 flows out, it is strongly colored red-yellow with yellow-green fluorescence by soluble fluorescein contained in the powdery colorant for a long time, for example, 30 minutes.

Here, as described above, the float 2 is formed so as to be dissolved in water when the powdered colorant is almost completely eluted from the water-permeable container 3. Therefore, the ball marker 1 loses buoyancy at the time and sinks to the bottom of the water.

The ball marker 1 is attached to the permeable container 3
It has a feature that the elution efficiency of the solid colorant C2 contained in the garment is high.

In the ball marker 1, the colorant powder C1 is released from the colorant accommodating cylinder 4 by the rapid expansion gas pressure of the combustion gas generated by the combustion of the release agent E. C1 is released to a wide area around the landing surface. Therefore, since the periphery of the landing surface is colored over a wide range, the position of the landing surface can be easily confirmed even from the sky.

Further, as described above, the float 2 dissolves in water when the powdered colorant has been eluted from the water-permeable container 3, so that the ball marker 1 does not float on the water surface forever. Therefore, it has features that it does not become an obstacle to fishing or the like, and does not pollute the environment as a floating product on the water.

In addition, since the ball marker 1 has a spherical shape as a whole as described above, it has a feature that it is extremely easy to throw, that is, a good operability. 2. General Description The water surface on which the position display marker of the present invention can be dropped is not particularly limited, and examples thereof include a sea surface, a river surface, a lake surface, a marsh water surface, and a pond water surface.

As described above, the position display marker of the present invention includes the first water surface coloring means and the second water surface coloring means.

The first water surface coloring means has a function of discharging a colorant to the water landing spot and the water surface near the water landing spot immediately after the position display marker of the present invention lands.

The first water surface coloring means contains a first colorant and has a colorant discharge port for releasing the first colorant, and a lid for covering the colorant discharge port. A colorant releasing means for releasing the first colorant from the inside of the colorant container to the outside of the colorant container at the time of landing on the body;

As the first colorant contained in the colorant container, any dye or pigment can be used as long as it can color the water surface so that it can be easily visually recognized from the sky. Hereinafter, the dye and the pigment may be collectively referred to as a colorant. Among the coloring agents, a fluorescent dye is particularly preferable because of high visibility from the air.

The fluorescent dye is preferably a water-soluble fluorescent dye.

Examples of the water-soluble fluorescent dye include soluble fluorescein (uranin, uranine K), CI
Acid Yellow 7, CI Basic Red 1, and the like.

The form of the first colorant is not limited as long as it can be released from the colorant container. Examples of the form of the first colorant include a powder and a solution of the colorant. Examples of the colorant solution include an aqueous solution and an alcohol solution.

The colorant container has a function of accommodating the first colorant therein, and is provided with a colorant discharge port from which the first colorant is released upon landing on water.

The shape of the colorant container is not particularly limited as long as it has a colorant discharge port.

Examples of the colorant container include a cylindrical container having a bottom.

As the colorant container, an open cone-shaped container having an opening at one end and expanding toward the opening end, an opening at one end and a bottom at the other end are provided. A truncated cone and a truncated pyramid shaped container having a shape that expands toward the opening end can be used.

The colorant container has a bottomed cylindrical shape, an open cone shape,
When the container has any of a truncated cone shape and a truncated pyramid shape, the colorant discharge port may include an opening of the container.

When the colorant solution is used as the first colorant, it is preferable to use a liquid-tight container as the colorant container.

The lid has a function as a lid for covering the colorant discharge port.

As the cover, for example, a cover sheet which is a sheet-like member which covers the colorant discharge port and is adhered to a peripheral portion of the colorant discharge port can be cited.
As an example of the cover sheet, the cover 6 in the ball marker 1 and the like can be mentioned.

Examples of the cover sheet include a cover sheet formed of waterproof paper, a cover sheet formed of a plastic film, and the like.

The colorant container has a bottomed cylindrical shape, an open cone shape,
In the case of a container having any of a truncated cone shape and a truncated pyramid shape, the lid may be in contact with a peripheral portion of a colorant discharge port in the colorant container in addition to the cover sheet. Examples of the cover member include a cover plate that is in contact with the cover, a cover member that covers the end of the colorant container on the side where the colorant discharge port is formed, and a plug-like member that is fitted into the colorant discharge port. When the colorant solution is used as the first colorant, an O-ring is provided between the lid and the colorant container, and the first colorant is added to the colorant before landing. It is preferable not to leak to the outside of the container.

The cover may further include one or two or more plates attached to the periphery of the colorant discharge port of the colorant container so that the colorant discharge port can be opened and closed by appropriate means such as a hinge or a hinge. A rotating cover plate or the like, which is a member in the shape of a circle, can be used.

The colorant releasing means has a function of releasing the first colorant from the inside of the colorant container to the outside of the colorant container at the time of landing.

As the colorant releasing means, for example, a colorant releasing device having a colorant urging means for urging the first colorant in the colorant container in a direction toward the colorant discharge port is exemplified. be able to.

As the colorant urging means, for example, a piston slidably provided inside the colorant container near the bottom of the colorant container, and a piston near the bottom of the colorant container near the piston. And a igniter for igniting the discharged medicine when it gets wet with water.

Examples of the release agent include a commonly used explosive such as a black explosive.

The igniting means includes: an igniting unit disposed inside the space and inducing combustion of the discharged medicine; and seawater provided outside the colorant container and electrically connected to the igniting unit. And an ignition device having a battery. Here, the seawater battery operates as a battery when it comes into contact with fresh water or seawater, and has a function of generating electromotive force.

When the position display marker includes any one of the lid plate, the lid-like member, the plug-like member, and the rotating lid plate as a lid, the colorant discharging means includes the piston. Instead of the colorant discharge device having the discharge agent and the ignition device, a colorant discharge device having the lid urging means and the lid regulating means can be used.

In the colorant discharging device having the lid urging means and the lid regulating means, the lid urging means has a function of urging the lid in a direction away from the colorant container. In the position display marker having the rotating lid plate as the lid, the function of "biasing in a direction away from the colorant container" in the lid biasing means is to set the rotating lid plate to In other words, it can be described as a function of rotating the colorant discharge port in the opening direction.

As the lid urging means, for example, a compression coil spring housed inside the colorant container can be used.

In the position display marker provided with a rotating lid plate as the lid, the lid urging means may open the coloring agent discharge port by opening the rotating lid plate in addition to the compression coil spring. A rotation spring that rotates in the direction can be given. The pivot spring is provided at a pivot portion of the pivot lid plate, one end is fixed near the pivot portion of the pivot lid plate, and the other end is the pivot portion of the colorant container. , A tension coil spring, a torsion coil spring, a leaf spring, and the like.

The lid regulating means keeps the lid in a state of covering the colorant discharge port against the urging force from the lid urging means until the marker for position indication of the present invention lands. Has the function of regulating. The lid restricting means is further configured to release the restriction on the lid when wet with water. Here, “regulating the lid so as to cover the colorant discharge port” can be paraphrased as “holding the lid so as to cover the colorant discharge port”.

As the lid regulating means, for example, a connecting rod having one end fixed to the lid and the other end protruding outside the colorant container from a through hole provided at the bottom of the colorant container, A connecting rod that has a function of holding the connecting rod so that the projecting portion of the connecting rod does not fall out of the through hole against the urging force from the urging member, and loses the function when wet with water. And a lid regulating device including a holding member.

As the connecting rod, a connecting rod having an engaging portion with which the connecting rod holding member is engaged is formed at the other end.

Examples of the connecting rod holding member include a water-soluble washer having an annular shape and a water-soluble pin having a rod shape. As the material of the connecting rod holding member, for example, a water softening material such as pulp that is softened by water, and a water soluble material such as a water soluble resin such as polyvinyl alcohol can be exemplified.

As the lid regulating device, specifically,
As an engaging part, a lid regulating device or the like having a connecting rod having a projecting part projecting in the radial direction formed thereon, and a water-soluble washer sandwiched between the projecting part of the connecting rod and the bottom of the colorant container. Can be mentioned.

Other examples of the lid regulating device include a lid regulating device including a connecting rod having a pin insertion hole formed as an engaging portion, and a water-soluble pin inserted into the pin insertion hole. Can be.

In the lid regulating device, the first colorant contained in the colorant container is supplied to the outside of the colorant container from a gap between the through hole and the connecting rod at the bottom of the colorant container. It is preferable to provide a cylinder extending from the through hole toward the lid so as not to leak to the lid. or,
Instead of providing the cylinder, a packing may be provided between the through hole and the connecting rod.

In the lid regulating device, when the landing rod is contacted with water, the connecting rod holding member is wetted with water and softens or melts. Therefore, the urging force from the lid urging means causes the connecting rod to penetrate the penetrating rod. Get out of the hole. Thereby, the regulation in the lid is released, and the colorant discharge port is opened.

In the colorant discharging device having the lid urging means and the lid regulating means, the colorant urging means includes a spring for urging the colorant by utilizing the repulsive force of the modified spring. A mold colorant biasing device can be used.

As the spring-type colorant urging device, for example, a push plate that is disposed near the bottom of the colorant container and that can slide inside the colorant container, A spring-type colorant urging device including a pressing plate urging spring interposed between the moving plate and the urging plate toward the colorant discharge port.

When the position display marker includes a compression coil spring housed in the colorant container as the lid urging means, the colorant urging means includes the spring type colorant. Instead of the urging device, for example, a plate-shaped colorant urging member fixed to an end of the compression coil spring on the side facing the bottom of the colorant container can be used.

Next, the second water surface coloring means in the position display marker of the present invention will be described.

The second water surface coloring means gradually releases the coloring agent when the position display marker of the present invention lands, and causes the water landing spot and the water surface in the vicinity thereof to stay for a long time, for example, 30 minutes or more. It has the function of coloring over the above time.

The second water surface coloring means contains a second colorant formed in a lump, and is permeable to water held in water in a state of being coupled or connected to the colorant container at the time of landing. It has a container. Here, the “connected or connected state” refers to a state in which the water-permeable container and the colorant container are connected so as not to be separated from each other, and a state in which the water-permeable container and the colorant container are separated from each other. , And both of the states connected to each other by appropriate connecting means.

Examples of the water-permeable container include a net container formed by a net such as a wire net or a plastic net.

Examples of the water permeable container connected to the colorant container include a water permeable container formed so as to surround the colorant container. Here, “formed so as to surround the colorant container” can be paraphrased as “located around the colorant container”. Examples of the water permeable container include a hemispherical water permeable container such as the water permeable container 3 in the ball marker 1.

The water-permeable container connected to the colorant container includes, for example, a water-permeable container connected to the colorant container by connecting means such as a string and a wire.

The second colorant contained in the water-permeable container contains a colorant and a water-soluble binder, and is formed in a lump.

As the second colorant, for example, a colorant in which powder or particles of the colorant are bound by the water-soluble binder, such as the solid colorant C2 in the ball marker 1, and the water-soluble binder A coloring agent in which the coloring agent is uniformly dispersed can be exemplified.

Examples of the shape of the second colorant include various shapes such as irregular lumps, pellets, pills, and tablets.

Examples of the colorant in the second colorant include the same dyes and pigments as the colorant contained in the first colorant. The colorant may be the same as or different from the colorant in the first colorant.

The water-soluble binder has a function as a binder for solidifying the colorant in a lump, and a function of gradually dissolving in water to diffuse the colorant into water.

Examples of the water-soluble binder include starch syrup, honey, and water-soluble resins such as polyvinyl alcohol, polyvinyl pyrrolidone, sodium polyacrylate, and polyethylene glycol.

The position display marker of the present invention may further include a buoyancy imparting means having a function of holding the first water surface coloring means in a state of floating on the water surface or in a state of standing still in water. .

As the buoyancy imparting means, for example, a buoyancy member formed around a portion near the colorant discharge port in the colorant container can be mentioned.

The buoyancy imparting means may further include a buoyancy member connected to the colorant container by a string or a wire.

As the buoyancy member, a buoyancy member formed so as to lose buoyancy when the elution of the coloring agent from the second water surface coloring means is substantially completed, such as the float 2 in the ball marker 1. Can be mentioned.

As such a buoyancy member, for example, a water-disintegratable buoyancy member which collapses when it comes into contact with water for a certain period of time can be exemplified.

As the water-disintegrating buoyancy member, a buoyancy member formed from pulp solidified with a water-soluble glue, a buoyancy member formed from a foamed molded article formed by foaming a water-soluble resin such as polyvinyl alcohol, and the like. And a buoyancy member formed from a material obtained by solidifying particles such as styrene foam with a water-soluble paste.

Other examples of the buoyancy member include a foamed resin molded article formed of hard foamed polystyrene or the like, and an airtight and flexible sheet such as a soft vinyl chloride resin sheet, a rubber sheet, and a rubberized cloth. And a floating bag body the inside of which is filled with a gas such as air.

[0098]

According to the present invention, there is provided a position display marker which is preferably used for displaying a specific position on the water surface by dropping the water surface from an aircraft or a ship.

[0099] The position display marker provided by the present invention can be used to immediately mark the landing spot and the surrounding water surface after landing.
The first water surface coloring means is strongly colored by the first colorant released from the colorant release port. Furthermore, even after the colorant has flowed off, the second colorant contained in the water-permeable container in the second water-surface coloring means gradually elutes into water, so that the water surface is maintained for a long time, for example, 30 minutes. Intense coloration over minutes. Therefore, by dropping the position display marker on the water surface, there is a feature that a mark that can be easily visually recognized from the air can be provided on the water surface.

[Brief description of the drawings]

FIG. 1 is a half cutaway view showing a configuration of a ball marker which is an example of a position display marker according to the present invention.

FIG. 2 is a schematic diagram showing the shape and configuration of the closing plate 12.

[Explanation of symbols]

1. Ball marker, 2. Float, 3. Permeable container, 4.
... colorant storage cylinder, 41 ... slit, 42 ... colorant discharge port, 5 ... partition plate, 6 ... lid, 7 ... shelf plate, 8 ... piston, 9
... seawater battery, 10 ... lead wire, 11 ... ignition part, 12 ... closing plate, 121 ... puller, 13 ... bottom plate, 14 ... packing, 1
5 wood screw, C1 colorant powder, C2 solid colorant, E
... released drugs.

Claims (10)

[Claims] 1. A colorant container containing a first colorant and provided with a colorant discharge port for releasing the first colorant, a lid for covering the colorant discharge port, and ,
A first colorant releasing means for releasing the first colorant from the inside of the colorant container to the outside of the colorant container;
A second colorant having a second colorant formed in a lump, and having a water-permeable container held in water in a state of being coupled or connected to the colorant container at the time of landing. A position display marker comprising: a water surface coloring means. 2. The water-permeable container according to claim 1,
2. The position display marker according to claim 1, wherein the marker is formed so as to surround the colorant container according to claim 1. 3. The method according to claim 1, further comprising a buoyancy imparting means for holding the first water surface coloring means in the first aspect in a state of floating on the water surface or in a state of standing still in water at the time of landing. Marker for position display described 4. The position display according to claim 3, wherein the buoyancy imparting means in the third aspect is a buoyancy member formed around a portion near a colorant discharge port in the colorant container in the first aspect. Marker. 5. The buoyancy imparting means according to claim 3, wherein the buoyancy member is formed so as to lose buoyancy when the elution of the second coloring agent from the second water surface coloring means is completed. Item 5. The position display marker according to item 3 or 4. 6. The position display marker according to claim 5, wherein the buoyancy member according to claim 5 is a water-collapsible buoyancy member that collapses when it comes into contact with water for a predetermined time. 7. The position indicating marker according to claim 6, wherein the water-disintegrable buoyancy member according to claim 6 is formed from pulp hardened with a water-soluble paste. 8. The colorant releasing means according to claim 1, wherein the first colorant according to claim 1 is used as the first colorant.
The position display marker according to any one of claims 1 to 7, further comprising a colorant urging means for urging in a direction toward the colorant discharge port. 9. The colorant urging means according to claim 8, wherein the piston is provided near the bottom of the colorant container according to claim 1 so as to be slidable inside the colorant container.
9. The position display marker according to claim 8, further comprising: a discharged medicine stored between the bottom of the colorant container and the piston; and an ignition unit that ignites the discharged medicine when wet with water. 10. The ignition means according to claim 9, wherein the ignition means is disposed between a seawater battery that generates an electromotive force when it comes into contact with fresh water or seawater, and the piston according to claim 9 and the bottom of the colorant container according to claim 1. And electrically connected to the seawater battery, and by the current from the seawater battery,
The position display marker according to claim 9, further comprising: an ignition unit that induces combustion of the discharged medicine according to claim 9.