KR20070088444A - Fishing lamp device and fishing method using it - Google Patents

Abstract

A fishing lamp device capable of collecting fish such as cuttlefish over a wise range and catching fish efficiently, and a fishing method using it. The light source (10) of a fishing lamp device (100) is composed of three LED light sources (10a, 10b, 10c) respectively producing blue short wavelength light, green intermediate wavelength light and red long wavelength light. The LED light sources (10a, 10b, 10c) are set at respectively specified angles when fishing cuttlefish so that continuous irradiation regions are formed in the order of wavelengths--a short-light-emission-wavelength LED light source (10a) lighting a sea surface region far from a fishing boat, an intermediate-light-emission-wavelength LED light source (10b) lighting a sea surface region contiguous to the first region, a long-light-emission-wavelength LED light source (10c) lighting a sea surface region close to the fishing boat. Accordingly, an effective irradiation range that provides a specified illuminance under sea forms incident regions that are deep in the intermediate region, and shallow in regions close to and far from the fishing boat as shown in curves A, B, c in Fig. 1.

Description

Fishing lamp device and fishing method using it}

The present invention can be installed in a fishing boat such as a water squid fishing boat, the catching light device for collecting fish, such as squid, saury, canary, and whitefish with the light from the ship, and to efficiently pick up, and a fishing method using the same It is about.

A fishing lamp is a light irradiation apparatus that can be used to collect fish. At present, many light sources (white light source, metal halide, etc.) are installed side by side in the upper part of a ship body, and the sea surface is irradiated from a ship. Conventionally, when a fishing lamp installed on a fishing boat, such as a squid fishing boat, is lit at night, water squid, fish, etc. are captured by using the habit of collecting fish close to the hull by illuminating the water on both sides of the hull.

In recent years, in order to reduce the fuel economy (fuel consumption rate) of a fishing boat and to reduce the light attenuation in water, the picking-up of the blue light emitting diode of wavelength range 400 to 500 as a light source is proposed (for example, patent document 1). Reference).

9 is a view showing an example of a pick-up lamp that uses a blue light emitting diode as a light source. In this case, the collecting lamp 500 uses a blue light emitting diode emitting blue light of 500 from the wavelength region 400 as a light source. Blue light emitting diodes are arranged in matrix form on several substrates to form LED plate light sources, and the LED plate light sources are installed at the position where the sea surface can be irradiated from above the deck of the ship (see FIG. 9).

As a result, the catch effect is high or the power consumption for obtaining the same catch is significantly reduced. This picking lamp is different from the conventional tube picking lamp, and since the light irradiation area is directed only to the surface of the sea, it is possible to efficiently enter the radiation into the water surface, and useless light radiation in the upper and horizontal directions I can eliminate it.

Moreover, the light emitting device which emits light of the optimal wavelength is proposed according to an aquatic animal (for example, refer patent document 2).

In this case, light emitting devices having different light emission wavelengths are arranged in the light emitting device, and the red or blue light is emitted by the fishes that are captured.

Patent Document 1: Japanese Patent Application Laid-Open No. 2003-134967

Patent Document 2: Japanese Patent Application Laid-Open No. 2002-84925

However, in the case of a light source using a conventional incandescent lamp or a discharge lamp, the transmittance of light into water is poor. In addition, a large amount of power is consumed to turn on the light source, and a large amount of expenses are required for facilities and fuel values for power generation in a ship.

In addition, in the case of the pick-up of patent document 1 mentioned above, as shown in FIG. 9, although it can irradiate to the depth below the sea surface (for example, the range of curve D), the outer side of a irradiation area (a position far from a fishing boat) There was a drawback that the squid in the squid stopped outside the irradiation range and did not come near the fishing boat, and that the amount of squid gathered was small. In addition, since the water is irradiated from the narrow part to the depth below the sea level, the water squid near the fishing boat does not rise to the sea level, and there is a drawback that the fishing efficiency is lowered.

In addition, in the light emitting device of Patent Document 2 described above, although light having an optimal wavelength can be emitted depending on aquatic animals, the irradiation range is narrow and has the same drawback as that of Patent Document 1.

Accordingly, an object of the present invention is to provide a fishing lamp device and a fishing method using the same that can collect water squid and the like in a wide range and can be efficiently caught.

A fishing lamp device according to the present invention is a fishing boat device installed on a fishing boat and collecting water squid, fish, etc. by light from a ship, wherein a plurality of light sources having different light emission wavelength regions are arranged and a light source having a long emission wavelength. It is to irradiate a sea level area and a sea level area close to the fishing vessel with a light source having a short light emission wavelength.

For example, the plurality of light sources are arranged in the order of wavelength, and the light sources with long emission wavelengths irradiate the surface area close to the fishing boat, and the light sources with the short emission wavelengths are arranged to irradiate the surface area far from the fishing boat. do.

Further, for example, three light sources emitting light of the short wavelength region, the medium wavelength region, and the long wavelength region, respectively, are arranged in the wavelength order, and the light source emitting the light of the long wavelength region is a first surface region close to the fishing boat. The light source emitting light of the medium wavelength irradiates a second surface area adjacent to a first surface area, and the light source emitting light of the short wavelength light irradiates a third surface area adjacent to a second surface area Thus, a predetermined depth of incidence is formed in the irradiation zone corresponding to each sea level zone in the seawater.

The light source is a plate light source which is formed by arranging a plurality of blue light, green light and red light emitting diodes in a matrix form on a substrate, and further includes angle adjusting means for adjusting the irradiation angle of the light source.

The apparatus further includes light emitting amount adjusting means for adjusting the light emitting amounts of the plurality of light sources, and the light emitting amount adjusting means adjusts the light emitting amounts of the plurality of light sources, thereby controlling the depth of incidence of each irradiation zone.

In addition, in the fishing method using a fishing lamp device according to the present invention, a fishing lamp device composed of a plurality of light sources having different light emission wavelength areas is installed on a fishing boat, and a light source having a long emission wavelength irradiates a sea surface area close to the fishing boat, The short light source is characterized in that to form a continuous irradiation zone in order of wavelength to pick up the sea level zone far from the fishing boat.

In the present invention, a plurality of light sources having different light emission wavelengths are used, the depth of incidence in the irradiated region near the fishing boat is relatively shallow, the depth of incidence in the middle irradiated region is relatively deep, and the depth of incidence in the far irradiated region is Since it becomes relatively shallow, that is, the effective irradiation range which can obtain predetermined illuminance in seawater, it becomes possible to form a continuous irradiation zone where the center part is deep. Further, for example, green light and blue light are deeper and can be irradiated farther because they have less light attenuation in water.

As a result, it is possible to collect fish such as water squid at a position close to the fishing boat, and at the same time, fish such as water squid at a position away from the fishing vessel can be efficiently collected. Further, even in the depth direction, fish such as squid can be gathered near the fishing boat.

In addition, by adopting a plurality of light emitting diodes arranged in a matrix form on the substrate as a light source, the required amount of light can be easily secured, and the total power consumption is also lower than that of conventional metal halide light sources or halogen pickers. It is possible to achieve low cost. In addition, by providing the angle adjusting means, it is possible to freely adjust the irradiation angle of the light source.

According to the present invention, it is possible to collect fish such as water squid at a position close to the fishing boat, and at the same time, fish such as water squid at a position away from the fishing vessel can be efficiently collected, and also fish such as water squid in the depth direction. Can be collected near fishing boats. That is, fish, such as a water squid, can be collected in a wide range, and it can catch efficiently.

In addition, by using the light emitting diode light source, the total power consumption can be reduced and low cost can be achieved.

1 is a diagram showing a first embodiment of the present invention.

2 is a front view showing a configuration example of the catching device 100.

3 is a side view showing a configuration example of the catching device 100.

4 is a diagram showing the transmittance of light in seawater.

5 is a view showing the absorbance of the eyes of the water cuttlefish.

6 is a view showing a second embodiment of the present invention.

7 shows a third embodiment of the present invention.

8 shows a fourth embodiment of the present invention.

9 is a view showing an example of a pick-up lamp using a conventional blue light-emitting diode as a light source.

* Description of the symbols for the main parts of the drawings *

1: fishing boat 2: fishing

3: fishing line 4: fishing needle

5: squid 5a: fish

10, 10A, 10B: light source 10a: LED light source (blue)

10al, 10a2: First and second blue LED light sources

10b: LED light source (green) 10c: LED light source (red)

10d: LED light source (white) 11, 21: axis

20: Attachment 20a: Pole

30: angle adjusting means 40: fixing means

41: Mounting screw hole

100, 200, 300, 400: Pick up light device 500: Pick up light

EMBODIMENT OF THE INVENTION Hereinafter, the catching lamp apparatus of the Example of this invention, and the catching method using the same are demonstrated, referring drawings. Here, the case of water squid fishing is demonstrated as an example.

1 is a diagram showing a first embodiment of the present invention. In FIG. 1, the installation and the irradiation state of the catching light device 100 are shown. 2 is a front view showing the configuration of the catching device 100. 3 is a side view showing the configuration of the catching light device 100.

In the installation state shown in FIG. 1, a plurality of catching light devices 100 are arranged on both sides of the fishing boat. The catching light device 100 is arranged above the position where the fishing machine 2 is provided, for example. When performing squid fishing, the fishing line 3 provided with the fishing needle 4 is continued by the fishing machine 2 to the sea.

As shown in FIG. 1, FIG. 2 and FIG. 3, the catching lamp device 100 is composed of a light source 10, an attachment portion 20, an angle adjusting means 30, and a fixing means 40.

In this example, the light source 10 uses light of three different colors: short wavelength light, medium wavelength light, and long wavelength light. Blue light is used as the short wavelength light, the wavelength range is 420 to 500 (around peak 470), green light is used as the medium wavelength light, and the wavelength range is 500 to 580 (around peak 530), and red light is used as the long wavelength light. The wavelength range is 580 to 780 (around peak 640). In the embodiment, it is preferable to use about 470 blue light as short wavelength light, about 530 green light as medium wavelength light, and about 640 red light as long wavelength light.

The light source 10 consists of three LED light sources 10a, 10b, and 10c of blue short wavelength light, green medium wavelength light, and red long wavelength light. The LED light sources 10a, 10b, and 10c are plate light sources formed by arranging a plurality of blue, green, and red light emitting diode LEDs in a matrix form on a substrate, respectively. In this example, a rectangular plate light source is used.

These LED light sources 10a, 10b, 10c are provided in the attachment portion 20 at a predetermined mounting angle via the shaft 11. In addition, it is possible to adjust the installation angles of the LED light sources 10a, 10b, and 10c in a predetermined range by using the angle adjusting means 30.

The attachment portion 20 is connected to one end of the fixing means 40 via the shaft 21.

The attachment portion 20 is capable of adjusting the angle with respect to the fixing means 40 in a predetermined range. Moreover, the other end of this fixing means 40 is formed in L-shape, and the installation screw hole 41 for fixing to the fishing boat 1 is provided. The catching device 100 irradiates a sea surface area where a light source having a short emission wavelength (LED light source 10a) is far from the fishing boat 1, and a sea area area where a light source having a long emission wavelength (LED light source 10c) is close to the fishing boat 1. Is installed to investigate.

As the angle adjusting means 30, for example, a knob screw can be employed. When the catching lamp device 100 is installed, the LED light sources 10a, 10b, and 10c are rotated and tightly fixed by the angle adjusting means 30 to a predetermined position. When the angle is adjusted, the angle adjusting means 30 is delayed, the LED light sources 10a, 10b, and 10c are rotated to predetermined positions, respectively, and the LED light source 10a is firmly tightened and fixed by the angle adjusting means 30. , 10b, 10c) is adjusted.

In addition, the angle adjusting means 30 is not limited to the method of using the above-described knob screw. For example, you may use the drive mechanism provided with a drive motor and a control means, and may automatically adjust the irradiation angle of LED light source 10a, 10b, 10c.

Hereinafter, the technical principle of the present invention will be described.

4 is a diagram illustrating the transmittance of light in seawater. As shown in Fig. 4, in the propagation of light in seawater, the long-wavelength light is markedly decayed. For example, the red light of 660 has a propagation distance of 20m and the light intensity is reduced to about 1% of the original value. do. On the other hand, the medium wavelength light has little decline, for example, the green light near the wavelength 500 also has a small decline in the seawater, and has a light intensity of about 50% even at the propagation distance 500. In addition, the blue light having a wavelength of 470 has a minimum decay rate in seawater, and has a light intensity of 50% or more even at a propagation distance of 50m. Short wavelength light has less decline than green light, and has a longer propagation distance.

In addition, as shown in Fig. 4, in the case of light having a shorter wavelength than blue light, it was found that the decline in seawater was remarkable and the propagation distance was short.

Therefore, when the water squid 5 swims to a depth of about 100 m, blue light and green light are more likely to reach.

5 is a view showing the absorbance of the eyes of the water cuttlefish. In Fig. 5, the vertical axis is taken as the absorbance (relative value) of the eyes of the water squid, and the horizontal axis is taken as the wavelength. As shown in Fig. 5, the absorbance of the eye of the water squid becomes a peak with respect to blue light having a wavelength of 470. That is, it can be seen that the eyes of the water squid have the maximum sensitivity to the blue light. Moreover, it turns out that it has comparatively high sensitivity also about the green light of wavelength 500 vicinity.

Therefore, it is more effective to catch with blue light and green light having a relatively high sensitivity to the eyes of water squid.

Based on the measurement results in FIGS. 4 and 5, a plurality of light sources having different light emission wavelength regions are arranged in the order of wavelength, and the light source with the longest light emission wavelength irradiates the surface area close to the fishing boat, and has the shortest light emission wavelength. By arranging the light source to irradiate the sea level area far from the fishing boat, it is possible to collect fish such as squid more efficiently.

For example, as shown in FIG. 1, when carrying out water squid operation using the fishing lamp apparatus 100, LED light source with a short emission wavelength is provided by providing LED light source 10a, 10b, 10c at predetermined irradiation angle. 10a irradiates the sea level area far from the fishing boat 1, the LED light source 10b of the medium wavelength light irradiates the adjacent area, and the LED light source 10c with the long emission wavelength is the sea level area close to the fishing boat 1 A continuous irradiation zone is formed in order of wavelength to irradiate. As a result, the incidence area in the sea is relatively shallow and has a gentle contour with a deep central area, near the fishing boat 1, and a region far from the fishing boat 1, such as curves A, B, and C of FIG. Can be formed.

In this case, by installing the LED light source 10a having a short emission wavelength to irradiate the sea level area far from the fishing boat 1, it is possible to make the light reach farther and deeper in the seawater. However, due to the incident angle of the light of the LED light source 10a, a region with a large amount of reflected light at the sea surface and a relatively shallow incidence depth is formed at a portion near the outer edge of the irradiation range. In addition, by providing the LED light source 10c with a long emission wavelength so as to irradiate the sea level area close to the fishing boat 1, light can irradiate only the water area near the sea level.

Therefore, the water squid 5 at the position away from the fishing boat 1 first gathers around the irradiation area of the LED light source 10a, then moves to the vicinity of the irradiation area of the LED light source 10b, and then the LED The light source 10c may be gathered around the irradiation area, that is, the area where the fishing line 3 is disposed. Further, in the depth direction, the water squid 5 first moves to the periphery of the irradiation area of the LED light source 10a and the LED light source 10b, and then the periphery of the irradiation area of the LED light source 10c, that is, the fishing line ( 3) can be gathered into the area where it is placed. Therefore, the picking effect can be obtained in a wider range.

As described above, in the present embodiment, the light source 10 of the collecting lamp device 100 is composed of three LED light sources 10a, 10b, and 10c of blue short wavelength light, green medium wavelength light, and red long wavelength light. The LED light sources 10a, 10b, and 10c are plate light sources formed by arranging a plurality of white, blue, and red light emitting diodes in a matrix form on a substrate, respectively. In this example, a rectangular plate light source is used. When performing the water squid operation using the catcher device 100, the LED light source 10a having a short emission wavelength is provided at a sea level area far from the fishing boat 1 by providing the LED light sources 10a, 10b and 10c at a predetermined irradiation angle. And the LED light source 10c having a long emission wavelength forms a continuous irradiation zone in wavelength order by irradiating a sea level zone close to the fishing boat 1.

As a result, the depth of incidence in the irradiated area near the fishing vessel 1 in the seawater is relatively shallow, the depth of incidence in the medium irradiated area is relatively deep, and the incidence in the remote irradiated area is relatively shallow, that is, in the seawater The effective irradiation range in which a predetermined illuminance can be obtained is a continuous irradiation zone (the range of curves A, B, and C of FIG. 1) having a deep and gentle contour at the center portion.

Therefore, the water squid 5 near the fishing boat 1 can be collected, and the water squid 5 at the position away from the fishing boat 1 can also be collected efficiently near the fishing boat. Moreover, even in the depth direction, the water squid 5 can be collected near the fishing boat 1. That is, by guiding the water squid 5 near the fishing boat 1, fish, such as a water squid, can be gathered in a wide range, and it can catch efficiently.

In addition, by using a plurality of light emitting diodes arranged in a matrix form on a substrate as a light source, it is possible to easily secure the required amount of light, and the total power consumption is also reduced compared to conventional metal halide light sources, such as picking up using halogens and the like. The cost can be low.

6 is a view showing a second embodiment of the present invention. In FIG. 6, the installation of the catching light device 200 and the irradiation state are shown.

As shown in Fig. 6, the light source 10A of the catcher device 200 is composed of two LED light sources 10a and 10c, blue short wavelength light and red long wavelength light. Other components of the catcher device 200 are the same as the catcher device 100.

When carrying out the water squid operation using the catching lamp device 200, LED light source 10a of short emission wavelength is installed by providing the LED light source 10a, 10c at a predetermined irradiation angle, and the sea surface area | region far from the fishing boat 1 is carried out. The LED light source 10c having a long emission wavelength is irradiated to form a continuous irradiation zone in wavelength order by irradiating a sea level zone close to the fishing boat 1.

In this case, although the irradiation range is smaller than in the case of using the three LED light sources 10a, 10b, 10c described above, the depth of incidence in the irradiation area close to the fishing boat 1 in the seawater is relatively shallow, The depth of incidence of and the depth of incidence in the remote irradiation zone are relatively shallow, that is, the effective irradiation range that can obtain a predetermined illuminance in the seawater is continuous continuous irradiation zone having a deep and gentle contour in the center (Fig. 1). Curves A and C).

To this end, the water squid 5 at a position close to the fishing boat 1 can be collected. At the same time, the water squid 5 at a position away from the fishing boat 1 can also be efficiently collected. Moreover, even in the depth direction, the water squid 5 can be collected near the fishing boat 1. Fish, such as a cuttlefish, can be gathered in a wide range rather than the conventional pick-up etc., and it can pick up efficiently.

7 shows a third embodiment of the present invention. In FIG. 7, the installation and the irradiation state of the catching lamp device 300 are shown.

As shown in FIG. 7, the light source 10B of the catcher device 300 includes a first blue LED light source 10al, a second blue LED light source 10a2, and a white LED light source 10d. . Here, the wavelength of the first blue LED light source 10al is shorter than the second blue LED light source 10a2. Another component of the catching device 300 is the same as the catching device 100.

When carrying out the water squid operation using the catching lamp apparatus 300, the LED light source 10al, 10a2, 10d is installed in a predetermined irradiation angle, and the 1st blue LED light source 10al is a sea level area | region far from the fishing boat 1 The second blue LED light source 10a2 irradiates the adjacent area, and the white LED light source 10d forms the continuous irradiation area in wavelength order to irradiate the sea level area close to the fishing boat 1. As a result, the incidence zone in which the irradiation range in the sea is deep in the central region as shown by curves A, B, and C of FIG. 7, and the region close to the fishing vessel 1 and the region far from the fishing vessel 1 have a relatively shallow and gentle contour. Can be formed.

In this case, the depth of incidence in the irradiation zone close to the fishing boat 1 in the seawater, as in the case of employing the three LED light sources 10a, 10b, 10c described above, is relatively shallow, and the depth of incidence in the intermediate distance irradiation zone. Is relatively deep, and the depth of incidence in the remote irradiation zone is relatively shallow, that is, the effective irradiation range in which the predetermined illuminance can be obtained in the seawater is continuous continuous irradiation zone (deep curve A in FIG. , B, C ranges).

Therefore, the water squid 5 near the fishing boat 1 can be collected, and the water squid 5 in the position away from the fishing boat 1 can also be collected efficiently near the fishing boat. Moreover, even in the depth direction, the water squid 5 can be collected near the fishing boat 1. Fish such as squid can be collected in a wider range than conventional picks, and can be picked up efficiently.

8 shows a fourth embodiment of the present invention. In FIG. 8, the installation and the irradiation state of the catching light device 400 are shown. This example catches fish 5a floating on the surface of the sea with light such as saury, canary, and whitefish. In this case, the catcher device 400 has light emission amount adjusting means (not shown) which can adjust the light emission amounts of the LED light sources 10a, 10b, 10c, respectively. In addition, LED light sources 10a, 10b, and 10c are provided in the pole 20a. Also in this case, it becomes possible to adjust the irradiation angle of LED light source 10a, 10b, 10c. The configuration of the LED light sources 10a, 10b, and 10c is the same as that of the above-described catcher device 100. Further, the light emission amount adjusting means is provided in the power supply control section on the fishing boat.

When catching using the catcher device 400, the amount of light emitted from the LED light sources 10a, 10b, 10c can be adjusted using the light emission amount adjusting means, and the incident depth can be controlled.

For example, the effective irradiation range for obtaining a predetermined illuminance in seawater can be made relatively uniform. That is, the irradiation ranges of the curves A, B, and C of FIG. 8 can be obtained. The saury can be collected near the surface of the sea, and it is suitable for picking up fish that float on the surface with light.

In the above embodiment, the LED light sources 10a, 10b, and 10c made of red, green, and blue three-color light emitting diodes are used, and the LED light sources 10a, which consist of two red and blue color light emitting diodes. Although 10c) was demonstrated, it is not limited to this. For example, four or more light emitting wavelength regions may use different light sources. In addition, the light source is not limited to an LED light source.

Incidentally, in the above embodiment, a description has been given of arranging a plurality of light sources having different light emission wavelength regions in the order of wavelength, but the present invention is not limited thereto. For example, the light emission wavelength region among the plurality of light sources may be arranged in reverse order of the arrangement of two light sources adjacent to each other.

Further, in the above embodiment, an LED light source made of a white light emitting diode may be used instead of the LED light source 10c made of a red light emitting diode. In this case, when white light is irradiated near the fishing boat 1, there is an advantage that it is easy to see the nearby sea surface and is easy to work.

In addition, although the case where the three LED light sources 10a, 10b, and 10c were irradiated by fixing at the predetermined angle was demonstrated in the said Example, it is not limited to this. For example, you may adjust the irradiation angle of a light source, irradiating.

Industrial Applicability The present invention is applied to a fishing boat using a property of fish collected in response to light such as a squid, saury, and the like, and a fishing system using a fishing boat using the fishing boat, and the like. It can be used for the purpose of efficiently carrying out squid fishing in a fishing boat.

Claims (6)

In the fishing boat apparatus which is installed in a fishing boat and collects a cuttlefish, a fish, etc. by light from a ship, And a plurality of light sources having different light emission wavelength regions and irradiating a sea level area far from the fishing vessel with a light source having a long emission wavelength and a light source having a short emission wavelength. The method of claim 1, The plurality of light sources are arranged in order of wavelength, and the light source having a long emission wavelength radiates a sea level area close to the fishing vessel, and the light source having a short emission wavelength is disposed to irradiate a sea level area far from the fishing vessel. Picking up device. The method of claim 2, Three light sources emitting light in the short wavelength region, the middle wavelength region, and the long wavelength region, respectively, are arranged in the wavelength order, The light source emitting light of the long wavelength region irradiates a first surface area close to the fishing boat, and the light source emitting light of the medium wavelength irradiates a second surface area adjacent to the first surface area, and the light having the short wavelength The light source for emitting light is irradiated to the third sea level zone adjacent to the second sea level zone, the fishing lamp device characterized in that to form a predetermined incident depth in the irradiation zone corresponding to each sea zone in the sea water. The method of claim 3, The light source is a plate-shaped light source which is formed by arranging a plurality of blue, green, and red light emitting diodes in a matrix form on a substrate, Picking up device further comprises an angle adjusting means for adjusting the irradiation angle of the light source. The method according to any one of claims 1 to 4, A light emission amount adjusting means for adjusting the light emission amounts of the plurality of light sources, respectively, The light emitting device according to claim 1, wherein the light emitting amount adjusting means adjusts the light emitting amounts of the plurality of light sources, and controls the incident depth of each irradiation zone. A fishing lamp device composed of a plurality of light sources having different light emission wavelength regions is provided on a fishing boat, and a light source having a long light emission wavelength irradiates a surface area close to the fishing boat, and a light source having a short emission wavelength irradiates a surface area far from the fishing boat. Catching method using a catching light device, characterized in that to form a continuous irradiation zone in order to pick up.

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