JP2021122270A - Bait log - Google Patents

Abstract

To provide a bait log provided with a polarization substance to increase the contrast in polarization of emitted light between a bait log body and an underwater background so as to enable effective attraction of cephalopods.SOLUTION: A bait log 10 comprises: a body shaped similarly to a bait of cephalopods; an eye part 22 and fishhooks 23 disposed at front and rear ends of the body 20; and a polarization substance disposed in a surface or inside of the body 20 to polarize incident light in a constant direction. The contrast in polarization of emitted light between the bait log 10 and an underwater background is increased to increase the visibility of the bait log 10 to attract cephalopods.SELECTED DRAWING: Figure 1

Description

The present invention relates to bait trees, and more particularly to bait trees used as simulated bait in cephalopod fishing such as squid.

In general, lure fishing is fishing using a lure that is a pseudo bait, and there are various types of lures used for such lure fishing.

For example, for cephalopod fishing such as squid and octopus, a bait tree (bait tree lure), which is a kind of lure, is used.

A normal bait tree has a main body that imitates the shape of a shrimp or a small fish, a weight provided at the lower part on the front side of the main body, and a fishing line connecting ring (eye part) provided at the tip (front end) and the rear end of the main body. (Also referred to as) and a fishing hook are included, and a shape such as a shrimp is arranged on both of the main body as needed.

The bait tree configured in this way can be thrown into a point and wound with a reel with the fishing line attached to the fishing line connecting ring, and various forms of action can be given to the fishing rod. Heads and feet are invited by the movement of the bait tree and hug the bait tree. Then, the cephalopods hugged by the bait tree can be caught by the fishing hook provided at the rear end of the main body.

By the way, in cephalopod fishing using such a bait tree, the natural movement of the bait tree and the movement and fluid form of the bait so that the cephalopods hugging the bait tree do not immediately separate the bait tree. In order to apply or attract cephalopods, a method of surrounding the surface of the bait tree with a lighting device that irradiates light, a fluorescent substance, and a fabric having a specific color and pattern is applied.

For example, Patent Document 1 and Patent Document 2 below disclose the composition of a bait tree according to the prior art.

Patent Document 1 discloses a joint type lure in which a main body portion is divided into two in the longitudinal direction and the divided front portion and the rear portion are swingably connected to each other.

Patent Document 2 discloses an illumination type lure configuration in which an illumination unit is installed at the eye portion of the bait tree and the light emitted from the illumination unit is reflected inside the bait tree body.

In recent years, bait trees to which livestock light and hologram technology have been applied have also been developed.

Japanese Unexamined Patent Publication No. 2008-182996 Republic of Korea Utility Model Registration No. 20-0489106

NADAV SHASHAR AND THOMAS W. CRONIN,'POLARIZATION CONTRAS Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, MD21228, MD Temple, S.A. E. , Pignatelli, V.I. , Cook, T.I. , How, M. J. , Chiou, T.M. H. , Roberts, N.M. W. , Marshall, N.M. J. ,'High-resolution polarization vision in a cuttlefish', Curr. Biol. 22, R121-R122. 2012. SHASHAR, N.M. , HAGAN, R.M. , BOAL, J.M. G. & HANLON, R. T. 'Cuttlefish use polarization sensitivity in predation on silver fish', Vision Research 40, 71-75, 2000.

On the other hand, light is a type of electromagnetic wave in which an electric field and a magnetic field oscillate perpendicularly to each other.

At this time, the phenomenon in which the vibration direction of the electric field of light advances while aligning or rotating in a specific direction is called'polarization'. Such a phenomenon is indistinguishable by human eyesight, but some animals have eyesight that can distinguish polarized light.

In Non-Patent Document 1, the cephalopods such as squid and octopus analyze and react with polarized light by 90 ° polarization contrast in the object, thereby allowing light to pass through the center of the object and the background. The results of an experiment in which cephalopods are educated to distinguish and react to targets in new situations while changing the direction of electron vectors are described.

Further, Non-Patent Document 2 experimentally shows that the greater the contrast between the polarization direction of the background and the polarization direction emitted from the experimental body, the greater the intensity with which the squid recognizes and reacts to the experimental body (fish to be fed). Find out from. When the polarization difference between the background and the experimental body is 90 °, the polarization contrast is the largest, and at this time, the reaction of the squid is also the largest.

It can be said that the two polarized lights having a polarization difference of 90 ° have a complementary color relationship from the viewpoint of the color of light. Complementary colors are colors of light that are opposite to each other, and when two complementary colors of light are combined, they become white light. Since such a complementary color has a strong contrast between the two colors, when the two colors of light having a complementary color relationship are placed together, the two colors are expressed more clearly and clearly due to the influence of each other. This is called "complementary color contrast of light".

Non-Patent Document 3 experimentally shows that the frequency of squid attacks is high when the light emitted from the experimental body (fish used as bait) is polarized.

Since the background of the unpolarized water tank consists of a large number of sums of polarized light, it can be explained as white light that combines all colors of light from the viewpoint of light color, and the experimental body that reflects polarized light is 1. It can be described as one color. Therefore, the experimental body that reflects polarized light is recognized better than the experimental body that reflects unpolarized light.

As a result, there is a need to develop a bait tree that can effectively attract and fish cephalopods by using the characteristics of cephalopods that recognize polarized light.

An object of the present invention is to provide a bait tree capable of effectively attracting cephalopods by applying a polarizing substance to the bait tree to increase the contrast between the underwater background and the polarized light emitted from the bait tree body. Is.

In order to achieve the above object, the bait tree according to the present invention includes a main body portion that imitates the bait shape of cephalopods, eye portions and fishing hooks provided at the tip and rear ends of the main body portion, and the main body portion. The bait tree is provided on the surface or inside, and contains a polarizing substance that polarizes the incident light in a certain direction, and the contrast between the underwater background and the polarized light emitted from the bait tree is increased to enhance the visibility of the bait tree. It is characterized by attracting cephalopods.

According to the bait tree according to the present invention, a polarizing substance that polarizes light in a certain direction is applied to a bait tree that catches polarized heads and feet to increase the contrast between the underwater background and the polarized light emitted from the body of the bait tree. be able to.

Further, according to the present invention, a reflective substance is applied to re-reflect the light polarized by the polarizing substance to minimize the light absorbed by the main body of the bait tree, and the polarized light reflected from the bait tree. By increasing the amount, it is possible to increase the contrast between the underwater background and the polarized light reflected from the bait tree.

Further, according to the present invention, a light-harvesting substance, a fluorescent substance, and a lighting device can be provided in the bait tree, and the contrast between the underwater background and the polarized light reflected from the bait tree can be maximized by using the reflective sheet and the polarizing substance.

Thus, according to the present invention, the cephalopods are effectively attracted by increasing the contrast between the underwater background and the polarized light emitted from the bait tree body so that the cephalopods can clearly recognize the bait tree. can do.

It is a block diagram of the bait tree according to 1st Example of this invention. It is a block diagram of the polarizing layer applied to the surface of the bait tree in FIG. It is a figure explaining the process that the light incident on the bait tree in FIG. 2 is reflected and polarized. It is a figure which shows the polarizing layer partially provided in the bait tree. It is a block diagram of the bait tree according to 2nd Example of this invention. It is a block diagram of the bait tree according to the 3rd Example of this invention. It is a block diagram of the bait tree according to 4th Example of this invention. It is a block diagram of the bait tree according to 5th Example of this invention.

Hereinafter, the bait tree according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following, terms that indicate directions, such as'left side',' right side','forward','backward','upward', and'downward', refer to their respective directions based on the conditions shown in each drawing. Define to instruct.

Cephalopods are mollusks that have no spine, are soft, and have no segments, such as squid, octopus, octopus, nautilus, and vampire squid, with their legs (arms) hanging on their heads. To tell.

It has been known that such cephalopods are usually color blind to distinguish only light and darkness of black and white, and color classification is not possible. However, from the above-mentioned Non-Patent Documents 1 to 3 and the like, polarized light is used. It has been confirmed that the greater the contrast between the underwater background and the polarized light, the greater the intensity of recognizing and reacting to the object.

Thereby, the present invention applies a polarizing substance that transmits light only in a certain direction to a bait tree for catching cephalopods that recognizes polarized light, and increases the contrast between the underwater background and the polarized light emitted from the bait tree body. There is.

Thereby, the present invention effectively attracts cephalopods by increasing the contrast between the underwater background and the polarized light emitted from the bait tree body so that the cephalopods can clearly recognize the bait tree. Can be done.

In the following, the configuration of the bait tree according to the preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 8.

Example 1.
FIG. 1 is a configuration diagram of a bait tree according to a first embodiment of the present invention, FIG. 2 is a diagram illustrating a configuration of a polarizing layer applied to the surface of the bait tree in FIG. 1, and FIG. 3 is a diagram. It is a figure explaining the process that the light incident on the bait tree in FIG. 2 is reflected and polarized.

As shown in FIG. 1, the bait tree according to the first embodiment of the present invention has a main body portion 20 that imitates the bait shape of cephalopods such as shrimp and small fish, and the tip and rear ends of the main body portion 20. Both the main body 20 including the eye portion 22 and the fishing hook 23 to be provided are provided with wings 24 imitating fins, whiskers, etc., if necessary.

The bait tree 10 according to a preferred embodiment of the present invention includes a polarizing layer 30 in which a polarizing substance is applied to the surface of the main body 20.

The main body 20 can be manufactured to be transparent, translucent, or opaque using various materials such as synthetic resin and metal material.

A weight 21 for applying a load is provided at the lower part on the front side of the main body 20.

Here, the front end portion and the rear end portion of the main body portion 20, that is, the head side portion and the tail side portion are manufactured using a hard material so that the bait tree 10 has a natural movement in the sea, and the main body portion. The central portion of 20 is manufactured using a soft material that is relatively flexible compared to the front and rear ends.

For example, the front end portion and the rear end portion of the main body portion 20 are manufactured using a hard material such as polyethylene, polyurethane, polyethylene or a foam material of polyurethane, respectively, and the central portion of the main body portion 20 is made of elastomer, vinyl chloride, silicon, etc. Manufactured using soft materials such as rigid rubber.

A lighting device, a light storage or fluorescent substance, and a hologram can be applied to the main body 20.

The polarizing layer 30 is formed by dividing a polarizing substance, for example, a polarizing film into a horizontally and vertically long portion so as to have a length of several mm, and arranging a large number of these divided polarizing film pieces on the surface of the main body 20.

That is, as shown in FIG. 2, the polarizing layer 30 includes an adhesive layer 31 bonded to the surface of the main body 20, a large number of polarizing film pieces 32 arranged on the surface of the adhesive layer 31, and a polarizing film piece. Includes a protective layer 33 formed on top of 32.

The adhesive layer 31 is formed by applying an adhesive to the surface of the main body 20 or adhering an adhesive tape, and a large number of polarizing film pieces 32 are applied or sprayed on the adhesive layer 31. Arranged in a manner.

Here, it is desirable that the polarizing film pieces 32 are irregularly arranged in different directions in order to polarize the light incident at various angles in various directions and attract the cephalopods.

However, the present invention is not limited to this, and one polarizing film can be arranged between the adhesive layer and the protective layer without dividing the polarizing film into a large number of pieces.

The protective layer 33 is formed by applying a transparent material such as silicon or attaching a transparent tape to the upper part of a large number of polarizing film pieces 32 arranged on the adhesive layer 31.

Such a protective layer 33 prevents the polarizing film piece 32 arranged on the adhesive layer 31 from separating from the adhesive layer 31 due to seawater, and also prevents fish including cephalopods and seabed topography. Prevent damage due to contact.

Further, the polarizing layer 30 further includes a reflective layer 34 between the surface of the main body 20 and the adhesive layer 31.

The reflective layer 34 functions to reflect the light incident on the bait tree 10 to the cephalopod side again on the side where the cephalopod is located about the main body 20.

Such a reflective layer 34 can be provided as a reflective sheet coated with a reflective material so that light can be reflected on the surface of various materials such as synthetic resin, paper, and cloth as well as metal. ..

The polarizing layer 30 further includes an internal adhesive layer 35 that adheres the reflective layer 34 to the surface of the main body 20.

As shown in FIG. 3, the polarizing layer 30 configured in this way is formed by a large number of polarizing film pieces 32 when light is incident on one side of the bait tree 10 and from the right side when viewed from FIG. Depending on the arrangement angle, the incident light is first transmitted in a specific direction to generate polarized light.

Then, the reflective layer 34 reflects the polarized light again in the opposite direction, that is, to the right side, and in the large number of polarizing film pieces 32, the polarized light reflected by the reflective layer 34 is polarized in the same direction as the primary transmitted light. Since it is light, all of them are secondarily transmitted to the right side.

As described above, according to the present invention, the reflective layer can be applied to the polarizing layer to re-reflect the light polarized by the polarizing substance.

Thereby, the present invention minimizes the amount of light absorbed by the main body of the bait tree and increases the amount of polarized light reflected from the bait tree to contrast the underwater background with the polarized light reflected from the bait tree. Can be larger.

On the other hand, as shown in FIG. 1, the polarizing layer 30 may be provided entirely on the surface of the main body 20, or may be partially provided on the surface of the main body 20.

For example, FIG. 4 shows a polarizing layer partially provided on the bait tree.

That is, as shown in FIG. 4, one or more polarizing layers 30 are provided in a strip shape that is longer in the vertical direction than in the horizontal direction, and one or more are arranged along the vertical direction on the surface of the main body 20. ..

Further, one or more polarizing layers 30 are arranged on the surface of the main body 20 along the left-right direction.

Then, on the inside or outside of the polarizing layer 30, a fabric layer (not shown) having a specific color and pattern for attracting cephalopods is further provided.

On the other hand, the polarizing layer 30 is not limited to a band shape, but has various shapes such as a polygonal shape including a circular shape, an elliptical shape, a square shape, and a triangular shape. It can also be placed on a protruding portion, for example, an eye or fin portion.

As described above, in the present invention, by providing the polarizing layer on the surface of the bait tree, the light incident on the polarizing layer can be polarized, and the contrast between the underwater background and the polarized light emitted from the bait tree can be increased.

Thereby, the present invention can effectively attract the cephalopods by increasing the contrast between the underwater background and the polarized light emitted from the bait tree and allowing the cephalopods to clearly recognize the bait tree.

Example 2.
FIG. 5 is a block diagram of a bait tree according to a second embodiment of the present invention.

As shown in FIG. 5, the bait tree 10 according to the second embodiment of the present invention includes a polarizing member 40 manufactured by using a polarizing material instead of the polarizing layer.

The polarizing member 40 can be manufactured three-dimensionally so that the polarizing material has a film shape or a width, a vertical length, and a thickness.

For example, the polarizing member 40 can be formed into a substantially spherical or hemispherical shape, imitating the shape of an eye such as a shrimp or a small fish.

Alternatively, the polarizing member 40 can be formed by imitating the fins and whiskers of shrimp and small fish.

Such a polarizing member 40 can be formed by mixing a raw material or a polarizing film piece 32 used for manufacturing a polarizing film with a transparent material such as silicon.

Further, the polarizing member 40 can also be manufactured by adhering a polarizing film or a large number of divided polarizing film pieces 32 to a surface such as a fin or a whiskers manufactured by using a soft material such as silicon.

The polarizing member 40 manufactured three-dimensionally in this way is connected to the main body 20 by various methods such as a coupling method and an adhesive method.

As a result, the present invention provides a polarizing member on fins, whiskers, eyes, etc., which protrudes to the outside of the main body and has a relatively large flow as compared with the main body, to polarize the light incident on the polarizing member. Therefore, it is possible to effectively attract cephalopods.

Example 3.
FIG. 6 is a block diagram of a bait tree according to a third embodiment of the present invention.

As shown in FIG. 6, in the bait tree 10 according to the third embodiment of the present invention, the polarizing substance 50 is mixed with the material used at the time of manufacturing the main body 20, and the material mixed with the polarizing substance 50 is used as the main body. Mold into 20 shapes.

Here, the polarizing material 50 is provided as a raw material or a polarizing film used for manufacturing a polarizing film, or as a large number of divided polarizing film pieces 32, and is like silicon used for manufacturing a main body 20. It can be mixed with a transparent material and molded into the main body 20.

As described above, according to the present invention, when the main body is manufactured, the polarizing substances can be mixed and integrally molded.

Example 4.
FIG. 7 is a block diagram of a bait tree according to a fourth embodiment of the present invention.

In the fourth embodiment of the present invention, as shown in FIG. 7, the main body portion 20 of the bait tree 10 is formed in a state of being divided into an upper portion and a lower portion, and the upper portion and the lower portion are formed. Manufactured by combining with each other.

Therefore, the bait tree 10 according to the fourth embodiment of the present invention is manufactured in a state of being divided into both sides, and a polarizing film is inserted into the space provided in the main body 20 which is bonded to each other, or the polarizing substance 50 is used. Is injected to form the polarizing member 40 in various shapes such as a pipe or bar shape.

Further, according to the present invention, the main body 20 can be manufactured by arranging a polarizing film or a large number of divided polarizing film pieces 32 in the space provided in the main body 20.

Here, it is desirable that the main body 20 is manufactured by using a transparent synthetic resin material such as silicon so that the polarizing member 40 arranged inside can be seen from the outside.

Therefore, in the present invention, when manufacturing the main body, a polarizing substance is put into the main body to polarize the light incident on the transparent main body, and the contrast between the underwater background and the polarized light transmitted through the bait tree is increased. This allows the cephalopods to clearly recognize the bait tree.

On the other hand, in the above-described embodiment, a polarizing substance is applied to the bait tree to allow light incident on the bait tree to be transmitted in one side to increase the contrast between the underwater background and the polarized light transmitted through the bait tree. As described above, the present invention is not limited thereto.

Example 5.
FIG. 8 is a block diagram of a bait tree according to a fifth embodiment of the present invention.

As shown in FIG. 8, the bait tree 10 according to the fifth embodiment of the present invention contains a reflective sheet 60 and a light-harvesting substance 70.

That is, a reflective substance that reflects the incident light, for example, a reflective sheet 60 is provided inside or on the surface of the main body 20, and the incident light is internally stored and emitted on both sides of the reflective sheet 60, respectively. And a pair of light-storing substances 70 that emit light are provided.

The light-storing substance 70 can absorb and store the energy of natural light and artificial light used in daily life such as mercury lamps, fluorescent lamps, and incandescent lamps, including the sun, and emit fluorescent light in a dark place. ..

In the present invention, a fluorescent substance or a lighting device may be applied instead of the light-storing substance 70.

The light-storing substance 70 of the bait tree 10 configured in this way emits and emits light stored inside, and the reflective sheet 60 reflects the light emitted and emitted from the light-storing substance 70.

The polarizing substance 50 transmits light incident from the outside through a reflective sheet, transmits light emitted and reflected from the light-storing substance 70, and light reflected from the reflective sheet 60, and is polarized by transmitting light only in a certain direction. Let me.

As described above, in the present invention, a light-harvesting substance, a fluorescent substance, and a lighting device can be provided in the bait tree, and the contrast between the underwater background and the polarized light transmitted from the bait tree can be maximized by using the reflective sheet and the polarizing substance. ..

Through the process as described above, the present invention applies a polarizing substance that polarizes light in a certain direction to a bait tree that catches cephalopods that recognizes polarized light, and contrasts the polarized light reflected from the underwater background with the bait tree. By increasing the size, cephalopods can clearly recognize the bait tree and effectively attract it.

The invention made by the present inventor has been specifically described above with reference to the above-described examples, but the present invention is not limited to the above-mentioned examples, and it is possible to carry out various modifications within a range that does not deviate from the gist thereof. Needless to say.

The present invention applies a polarizing substance that polarizes light in a certain direction to a bait tree that catches cephalopods that recognizes polarized light, and increases the contrast between the underwater background and the polarized light transmitted from the bait tree. By making the cephalopods clearly recognize the bait tree, it is applied to the bait tree technique that effectively attracts the bait tree.

10: Bait tree 20: Main body 21: Weight 22: Eye 23: Fishing hook 24: Feather 30: Polarizing layer 31: Adhesive layer 32: Polarizing film piece 33: Protective layer 34: Reflective layer 35: Internal adhesive layer 40: Polarized light Member 50: Polarizing material 60: Reflective sheet 70: Light-storing material

Claims (7)

It is a bait tree that attracts cephalopods that recognize polarized light.
The main body that imitates the bait shape of the cephalopod and
Eyes and hooks provided at the front and rear ends of the main body,
It contains a polarizing substance provided on the surface or inside of the main body portion to polarize incident light in a certain direction.
A bait tree characterized by increasing the contrast between the underwater background and the polarized light emitted from the bait tree to enhance the visibility of the bait tree and attract cephalopods. Further, it contains a reflective substance that reflects light incident through the polarizing substance.
The bait tree according to claim 1, wherein the polarizing substance polarizes light incident from one side of the bait tree in a certain direction and transmits all the polarized light reflected by the reflective substance. In addition, it contains light-storing substances that store, emit and emit light.
The light-storing substance is provided on both sides of the reflective substance, respectively.
The polarizing substance polarizes light incident from the outside and transmits it through the reflective substance, and polarizes and transmits the light emitted and reflected from the light-storing substance and the light reflected from the reflective substance. The bait tree according to claim 2, wherein the bait tree is characterized by this. The polarizing substance is applied to the surface of the main body to form a polarizing layer.
The polarizing layer includes an adhesive layer, a polarizing film arranged on the surface of the adhesive layer, or a plurality of divided polarizing film pieces.
A protective layer formed by using a transparent material on the upper part of the polarizing film or a plurality of divided polarizing film pieces,
The bait tree according to claim 1, further comprising a reflective layer that reflects light incident on the polarizing film or a plurality of divided polarizing film pieces. The polarizing substance is provided as a polarizing member having a three-dimensional shape, and is provided.
The bait tree according to claim 1, wherein the bait tree is coupled to the outside of the main body portion. The bait tree according to claim 1, wherein the polarized substance is mixed with a raw material for producing the main body portion and integrally formed during the production of the main body portion. The main body is manufactured in a state of being divided into both sides so that it can be connected to each other.
The bait tree according to claim 1, wherein the polarizing substance is provided as a polarizing member inserted into a space provided in the main body when the main body is divided into both sides.

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