JP2019169451A - Fishing light - Google Patents

Abstract

To provide a fishing light capable of emitting lights according to the environment of the sea.SOLUTION: A fishing light includes: a first LED element group capable of emitting a first light having a peak wavelength in the range of 600nm or more and 660nm or less; a second LED element group capable of emitting a second light having a peak wavelength in the rage of 580nm or more and 660nm or less, and a wavelength shorter than that of the first LED element group; and a power supply part formed to be capable of individually energizing the first LED element group and the second LED element group.SELECTED DRAWING: Figure 3A

Description

  The present invention relates to a fish lamp having a light emitting diode (LED) element.

  Conventionally, in order to efficiently catch saury, squid, etc., fish collection lamps have been widely used to attract these target fish species. In the past, incandescent bulbs and metal halide lamps have been mainly used for such fish lamps. However, in recent years, in order to achieve a long-life fish lamp with lower power consumption, Development is progressing (see, for example, Patent Document 1 below).

JP 2017-050283 A

  By the way, it is empirically known that the wavelength band of light preferable for fishing varies depending on the fish species of the target fish. It is also known that there are fish that move forward in the direction of light, fish that move in the reverse direction, and fish that move in the middle.

  Saury is known as an example of a fish species that moves forward toward the light. With reference to FIG. 1A-FIG. 1C, an example of saury fishing using a fish collecting lamp will be described. This method is known as a rod catch fishing method. The fishing rod fishing method is performed at night.

  A search light (not shown) of white light provided on the fishing boat 61 is turned on to search for the target fish (here, saury 55) and guide it to the vicinity of the fishing boat 61. Next, as shown in FIG. 1A, the search light is turned off, the fish lamp 70 provided on one of the ridges (here, the right ridge) is turned on, and white light 71 is irradiated from the sea toward the sea 51. . A net 62 is set in the sea 51 on the opposite side (here, left side) side. In FIG. 1A, the sea surface is indicated by reference numeral 50.

  As shown in FIG. 1A, the fish collection lamp 70 is provided so as to project laterally from the hull of the fishing boat 61 by a rod-like member. A plurality of the rod-shaped members are installed in the depth direction of the sheet of FIG. 1A, and a fish collecting lamp 70 is provided on each rod-shaped member. 1A to 1C, assuming that the bow side of the fishing boat 61 is illustrated, a plurality of rod-like members are provided from the bow side toward the stern side, and a fish collecting lamp 70 is provided on each rod-like member. ing.

  Similar to the fish collection lamp 70, the fish collection lamp 80 is attached to a plurality of rod-like members on the opposite side (here, the port side).

  Next, the fish collection lamps 70 are sequentially turned off from the stern side, and conversely, the fish collection lamps 80 are sequentially turned on from the bow side. At this time, the saury 55 moves from the starboard side to the port side via the bow side in response to the movement of light (see FIG. 1B). At this time, white light 81 is lit from the fish collection lamp 80.

  After the saury 55 is guided to the port side, that is, the net 62 side, the irradiation light from the fish lamp 80 is changed from white light 81 to red light 82 (see FIG. 1C). The fish collection lamp 80 includes an element (bulb) that emits white light and an element (bulb) that emits red light, and changes the illumination light to red light by switching the element to emit light.

  With this color change, the saury 55 starts to rise toward the sea surface 50 side. In accordance with this, the net 62 is pulled up in the direction of the arrow d1. As a result, the saury 55 is captured in the net 62.

  In this way, the fish lamp 80 irradiates light from the sea toward the sea surface 50. For this reason, due to a change in the external environment such as generation of sea mist above the sea surface 50, light may not reach the sea surface 50 or the sea 51 near the sea surface 50. Further, such fishing is performed at night, and in the situation of FIG. 1C, the white light is turned off, and only the red light 82 from the fish collection lamp 80 is lit on the net 62 side. When this occurs, there is a problem that it becomes difficult for the fisherman to visually recognize the sea surface 50 and it is difficult to check whether the saury 55 is rising from the sea 51 to the sea surface 50 side.

  In view of the above-described problems, an object of the present invention is to provide a fish lamp capable of irradiating light according to the marine environment.

The fish collection lamp of the present invention is
A first LED element group capable of emitting the first light having a peak wavelength in the range of 600 nm or more and 660 nm or less;
A second LED element group having a peak wavelength within a range of 580 nm or more and 660 nm or less and capable of emitting second light having a shorter wavelength than the first LED element group;
The first LED element group and the second LED element group are each provided with a power supply unit configured to be energized separately.

  The second light preferably has a peak wavelength of 580 nm or more and 620 nm or less.

  According to the above configuration, even when sea fog occurs, the effect of raising the target fish such as saury to the sea surface side can be enhanced. Details will be described later in the section “Description of Embodiments”.

  Both said 1st LED element group and said 2nd LED element group are good also as what is comprised by the monochrome LED element which does not contain fluorescent substance.

  The maximum light intensity at the peak wavelength of the first light emitted from the first LED element group may be higher than the maximum light intensity at the peak wavelength of the second light emitted from the second LED element group. I do not care.

  The first light having a short wavelength has lower transmittance in water than the second light having a long wavelength. For this reason, as will be described later in the section “Mode for Carrying Out the Invention”, when irradiating light toward the sea, if the intensity of the second light is extremely high, the target fish is The effect of raising the side may not be fully demonstrated. Therefore, by increasing the intensity of the first light (more specifically, the maximum light intensity at the peak wavelength) above the intensity of the second light (more specifically, the maximum light intensity at the peak wavelength), Can also increase the effect of raising the fish relative to the sea level.

  In the above configuration, the number of LED elements included in the first LED element group may be greater than the number of LED elements included in the second LED element group.

  The fish collection lamp may include a third LED element group that can emit white light.

  According to the fish collection lamp of the present invention, it is possible to irradiate light according to the marine environment.

It is a conceptual diagram for demonstrating a rod catch net fishing method. It is a conceptual diagram for demonstrating a rod catch net fishing method. It is a conceptual diagram for demonstrating a rod catch net fishing method. It is a front view which shows typically an example of the fish collection lamp of this invention. It is a top view which shows typically an example of the fish collection lamp of this invention. It is drawing which expands and schematically shows a part of FIG. 2B. It is typical sectional drawing when cut | disconnecting by the BB line of FIG. 3A. It is a figure which shows an example of the emission spectrum of a 1st LED element. It is a figure which shows an example of the emission spectrum of a 2nd LED element. It is a figure which shows an example of the light emission spectrum at the time of making all the LED elements mounted in the light emission part light simultaneously. It is a figure which shows the transmittance | permeability spectrum of water. It is a figure which shows the standard relative luminous sensitivity curve at the time of a dark place. It is a figure which shows typically another example of the fish collection lamp of this invention. It is a figure for demonstrating the light distribution of the light radiate | emitted from a fish-collecting lamp. It is a figure for demonstrating the light distribution of the light radiate | emitted from a fish-collecting lamp.

  The fishlight according to the present invention will be described with reference to the drawings. Note that the following drawings are schematically shown, and the actual dimensional ratio does not necessarily match the dimensional ratio on the drawing.

  As described above with reference to FIGS. 1A to 1C, the fish collection lamp of the present invention is used by being attached to the hull 61, and more specifically, for example, instead of a part or all of the fish collection lamp 80. It is used. That is, it is attached to the rod-shaped member and provided so as to protrude from the hull of the fishing boat 61 to the side on one side. In addition, it is also possible to use the fishlight of the present invention by attaching it to both sides. In the following, the same elements as those in FIGS. 1A to 1C will be described with reference to the same reference numerals.

  2A and 2B are drawings schematically showing an example of the fish collecting lamp of the present invention, FIG. 2A is a front view, and FIG. 2B is a plan view when viewed from the light emitting surface side. As illustrated in FIGS. 2A and 2B, the fish collection lamp 1 includes a light source unit 3 in which a plurality of LED elements (10, 20) are arranged. The light source unit 3 is accommodated in the housing 4. The housing 4 is provided with a light emitting surface made of a translucent member. As described above, FIG. 2B shows the light source unit 3 viewed from the light emitting surface side provided in the housing 4. It corresponds to a schematic plan view. The light source unit 3 is provided with a heat sink 6 composed of a plurality of fins.

  In FIG. 2B, the coordinate axis is represented on the light exit surface with the longitudinal direction as the Y direction, the short direction as the X direction, and the direction orthogonal to the XY plane as the Z direction.

  FIG. 3A is an enlarged view schematically showing a region A in FIG. 2B. 3B is a schematic cross-sectional view when the region A in FIG. 2B is cut along the line BB in FIG. 3A. As illustrated in FIGS. 3A and 3B, the light source unit 3 includes a plurality of LED elements (10, 20) mounted on the substrate 7.

  The LED element 10 and the LED element 20 have different emission wavelengths. The LED element 10 is an element that can emit the first light L1 having a peak wavelength in the range of 600 nm or more and 660 nm or less. The first light L1 emitted from the LED element 10 preferably has a peak wavelength of 620 nm or more and 660 nm or less. The LED element 20 is an element having a peak wavelength in the range of 580 nm or more and 660 nm or less and capable of emitting the second light L2 having a shorter wavelength than the LED element 10. The second light L2 emitted from the LED element 20 preferably has a peak wavelength of 580 nm or more and 620 nm or less. Hereinafter, the LED element 10 is referred to as “first LED element 10”, and the LED element 20 is referred to as “second LED element 20”.

  In the present embodiment, the first LED element 10 is a monochromatic LED element having a peak wavelength of 625 nm and a half width of 16 nm, and does not include a phosphor. The half width of the first LED element 10 is preferably 30 nm or less, and more preferably 20 nm or less. The lower limit of the half width of the first LED element 10 is arbitrary, but is, for example, 15 nm or more. An example of the emission spectrum of the first LED element 10 is shown in FIG. 4A.

  In the present embodiment, the second LED element 20 is a monochromatic LED element having a peak wavelength of 590 nm and a half width of 16 nm, and does not include a phosphor. The half width of the second LED element 20 is preferably 30 nm or less, and more preferably 20 nm or less. The lower limit of the half width of the second LED element 20 is arbitrary, but is, for example, 15 nm or more. An example of the emission spectrum of the second LED element 20 is shown in FIG. 4B. In FIG. 4A and FIGS. 4B and 4C below, the horizontal axis is the wavelength [nm], and the vertical axis is the relative value [a.u.] of the light intensity.

  As shown in FIG. 3A, the light source unit 3 (fishlight 1) includes a plurality of first LED elements 10 (first LED element group) and a plurality of second LED elements 20 (second LED element group). I have. Each LED element (10, 20) is energized and controlled from the power supply unit 30. More specifically, the power supply unit 30 is configured to be energized separately for each of the first LED element group 10 and the second LED element group 20, that is, for each wavelength. That is, the light source unit 3 (fish collection lamp 1) can light only the first LED element group 10 and can also light only the second LED element group 20. The first LED element group 10 It is also possible to light both the LED element group 20 and the second LED element group 20. The power supply unit 30 is mounted on the substrate 7 on which the LED elements (10, 20) are mounted, or is mounted on a substrate different from the substrate 7.

  In the present embodiment, regarding the LED elements (10, 20) mounted on the light source unit 3, the number of mounted first LED elements 10 is larger than the number of mounted second LED elements 20. Thereby, when both are turned on, the maximum light intensity of the peak wavelength of the first light L1 emitted from the first LED element group 10 is the peak of the second light L2 emitted from the second LED element group 20. It becomes higher than the maximum light intensity of the wavelength.

  FIG. 4C is an example of an emission spectrum when all the LED elements (10, 20) are turned on. In FIG. 4C, for convenience, the spectrum of the first light L1 emitted from the first LED element group 10 and the spectrum of the second light L2 emitted from the second LED element group 20 are displayed separately. However, when all the LED elements (10, 20) are turned on, actually, the light source 3 (fish collection lamp 1) emits light in which both spectra are superimposed.

  The fish collection lamp 1 according to the present invention is, for example, from the hull of a fishing boat 61, like the fish collection lamp 80 in FIG. It is provided to project to the side.

  According to the fish collection lamp 1 having such a configuration, the effect of raising the target fish to the sea surface side by irradiating with appropriate light in accordance with the marine environment will be described below. In the following description, it is assumed that a plurality of the fish collecting lights 1 are provided instead of the fish collecting lights 80 shown in FIGS. 1A to 1C.

(When sea fog does not occur)
In the same manner as described above with reference to FIGS. 1A and 1B, the saury 55 is guided to the side where the net 62 is provided (here, the port side). The fish collection lamp 1 of the present invention may be provided with a third LED element (not shown) that emits white light in part, and another fish collection lamp capable of emitting white light is provided in the hull 61. It does not matter if it is

  Next, the white light is turned off and only the first LED element group 10 is turned on. As described above, the first LED element group 10 is an element that emits the first light L1 having a peak wavelength in the range of 600 nm or more and 660 nm or less, and this light is red light. When such light is irradiated toward the sea surface 50 from the sea, the saury 55 starts to rise toward the sea surface 50 as described above.

  The fish such as saury 55 is in a dark adaptation state at the start of nighttime fishing, that is, in a state before illuminating with white light. However, in a state where white light is irradiated from the sea toward the sea 51 as shown in FIGS. 1A to 1B, the illuminance of the sea 51 increases, and the degree of adaptation to brightness gradually increases. Under this condition, when the white light is suddenly turned off and the light from the first LED element group 10 of the red system is irradiated, the saury 55 recognizes that the surrounding area suddenly becomes dark and starts to move for light.

  FIG. 5 is a graph showing a water transmittance spectrum. As shown in FIG. 5, the transmittance sharply decreases in the region where the wavelength is longer than the vicinity of 600 nm, and the transmittance is extremely low in the region of 620 nm or more. In addition, while FIG. 5 is a transmittance spectrum in pure water, it is seawater that is actually irradiated with light, but considering that it is scattered by impurities contained in seawater when irradiated with light, The transmittance spectrum of FIG. 5 tends to decrease as a whole. That is, it can be said that the transmittance spectrum of seawater shows almost the same tendency as in FIG.

  That is, when the first light L1 in the range of 600 nm or more and 660 nm or less is irradiated from the sea toward the sea surface 50, the light does not reach the deep position from the sea surface 50 because the light is absorbed by seawater. That is, only the vicinity of the sea surface 50 is bright, and the inside of the sea 51 slightly away from the sea surface 50 remains dark. Therefore, the saury 55 is estimated to rise toward the bright sea surface 50.

  If so-called blue light having a wavelength of about 500 nm is irradiated from the sea toward the sea 51, the light in this wavelength band is more water-resistant than the wavelength band of the first light L1, as shown in FIG. High transmittance. For this reason, since such blue light reaches a certain depth deep from the sea surface 50, there is a large difference between the brightness of the position of the saury 55 induced in the sea 51 at the time of FIG. 1B and the brightness of the sea surface 50. Does not exist. For this reason, when the blue light is irradiated, it is considered that the saury 55 does not show a tendency to rise toward the sea surface 50 as compared with the case where the first light L1 is irradiated.

  FIG. 6 is a graph showing a standard relative luminous sensitivity curve in a dark place. In FIG. 6, the horizontal axis represents wavelength, and the vertical axis represents specific luminous efficiency. The vertical axis represents the degree to which the human eye feels at the wavelength at which the human eye has maximum sensitivity in a dark place as 1, and the degree of feeling the brightness at other wavelengths as a relative value. In a dark place, the maximum visibility is supposed to be 507 nm.

  As shown in FIG. 6, in a range where the wavelength exceeds 507 nm, the relative visibility is drastically lowered as the wavelength of light becomes longer. As described above, since fishing of saury 55 is performed at night, at the time when the saury 55 is raised toward the sea surface 50 side by irradiating the first light L1 from the fish collecting lamp 1, the fisherman The existence of saury 55 is confirmed by relying on the single light L1. That is, when the wavelength of the first light L1 is too long, the visibility is low, and the presence of the saury 55 becomes difficult to see. For this reason, it is preferable that the wavelength of the 1st light L1 is 660 nm or less, and it is more preferable that it is 635 nm or less.

(When sea fog occurs)
In the same manner as described above with reference to FIGS. 1A and 1B, the saury 55 is guided to the side where the net 62 is provided (here, the port side). Note that the fish collection lamp 1 of the present invention may be partially provided with LED elements (not shown) that emit white light, or another fish collection lamp capable of emitting white light is provided on the hull 61. It does not matter as long as it is.

  Next, the white light is turned off, and both the first LED element group 10 and the second LED element group 20 are turned on. The emission spectrum at this time is in the state as described above with reference to FIG. 4C, for example. As described above, the first LED element 10 is an element that emits the first light L1 having a peak wavelength in the range of 600 nm or more and 660 nm or less, and this light is red light. On the other hand, the second LED element 20 is an element that has a peak wavelength of 580 nm or more and emits second light L2 having a shorter wavelength than the first light L1 emitted from the first LED element 10. Specifically, the second light L2 has a peak wavelength of 580 nm or more and 620 nm or less, and this light is light of an orange color system or an amber color system. The notation of the color system name is merely an example because the way it feels varies depending on the person viewing it.

  When sea fog occurs, a part of the first light L1 emitted from the first LED 10 is absorbed and scattered by fog particles present at a position above the sea surface 50. As a result, the amount of light reaching the sea surface 50 is lower than when no sea mist is generated. For this reason, if only the first LED element 10 is lit, the illuminance of the sea surface 50 is reduced, so that the illuminance of the sea surface 50 is not different from the illuminance of the sea 51 where the saury 55 exists, It is difficult for the saury 55 to show a tendency to rise toward the sea level 50.

  On the other hand, the second light L2 having a slightly shorter wavelength than the first light L1 is less likely to be scattered / absorbed by fog particles than the first light L1. Table 1 below shows the extinction coefficient of light with respect to water. It can be seen that the longer the wavelength, the larger the value. The extinction coefficient is a value indicating the rate of attenuation of intensity with respect to the traveling distance of light.

  That is, since the second light L2 is less likely to be absorbed and scattered by sea fog than the first light L1, it reaches the sea surface 50, and as a result, the illuminance of the sea surface 50 is ensured to some extent.

  On the other hand, when the wavelength of the second light L2 is made too short, the transmittance for water becomes too high as described above with reference to FIG. 5, and therefore the saury 55 induced at the time of FIG. 1B. There is no significant difference between the brightness in the sea 51 where the seawater exists and the brightness of the sea surface 50, and the effect of guiding the saury 55 to the sea surface 50 side is not realized. From this viewpoint, the wavelength of the second light L2 is set to 580 nm or more.

  Furthermore, since the second light L2 has a shorter wavelength than the first light L1, the relative luminous sensitivity is high as shown in FIG. At night, when sea fog occurs, the fisherman is in a state where it is very difficult to visually recognize the sea surface 50. However, the fisherman is exposed to the sea surface 50 by the second light L2 having a higher specific sensitivity than the first light L1. There is also an effect that the sea surface 50 is easily visible.

  The fish collection lamp 1 may include a switching operation unit 31 that transmits a control signal to the power supply unit 30 as shown in FIG. In this case, the fisherman (operator) operates the switching operation unit 31 so that the power supply unit 30 energizes only the first LED element group 10 or the first LED element group 10 and the second LED element group 20. Switch between energizing both. In addition, the fish collection lamp 1 of this invention does not exclude the case where it is comprised so that only the 2nd LED element 20 group can be lighted.

The light distribution angle of the light emitted from the light source unit 3 is arbitrary, but preferably, the light distribution angle θ _{x in} the X direction is 90 ° to 120 °, and the light distribution angle θ _{y in the} Y direction is 50. It is (degree)-70 degree (refer FIG. 8A and FIG. 8B). Note that the coordinate axes shown in FIGS. 8A and 8B are the same as those shown in FIG. 2B.

[Another embodiment]
Hereinafter, another embodiment will be described.

  <1> The fishlight 1 may include a color adjustment instruction unit that can adjust the ratio between the light emission intensity of the first LED element group 10 and the light emission intensity of the second LED element group 20. The color adjustment instruction unit transmits a control signal to the power supply unit 30, and the power supply unit 30 supplies both the first LED element group 10 and the second LED element group 20 based on the control signal. Adjust the amount of current that is generated. Thereby, the spectrum of the light emitted from the fish collection lamp 1 is adjusted.

  According to this aspect, it is possible to irradiate the sea surface 50 from the fishlight 1 with light of an appropriate color that matches the geographical environment of the fishing ground and the properties of the target fish.

  <2> In the above embodiment, the first LED element 10 and the second LED element 20 have been described as being monochromatic LED elements that do not include a phosphor. However, this invention does not exclude the case where the 1st LED element 10 and the 2nd LED element 20 are comprised as an element containing fluorescent substance.

  However, when the 1st LED element 10 and the 2nd LED element 20 are comprised as an element containing fluorescent substance, the half value width of an emission spectrum becomes longer than the example illustrated by FIG. 4A and 4B. As a result, light in a wavelength region where the transmittance for water (underwater 51) is too high, and conversely, light in a wavelength region where the transmittance for water (underwater 51) is too low is included. For this reason, it is preferable that the first LED element 10 and the second LED element 20 are composed of single-color LED elements from the viewpoint of increasing the light utilization efficiency.

  <3> The number and arrangement of the LED elements (10, 20) shown in FIGS. 2B and 3A are merely examples. Each LED element (10, 20) with which the fishlight lamp 1 of the present invention is provided is not limited to the arrangement number and arrangement mode shown in these figures.

  However, as shown in the figure, the number of the first LED elements 10 and the number of the second LED elements 20 are arranged to increase the number of the first LED elements 10 when the both are turned on when sea mist is generated. The effect of raising toward is further enhanced. Instead of changing the number of each LED element (10, 20), the intensity of the first light L1 from the first LED element is changed by changing the energization amount to each LED element (10, 20). Even when the intensity of the second light L2 from the second LED element 20 is increased, the same effect can be obtained. Here, “the intensity of the first light L1” and “the intensity of the second light L2” are respectively the maximum light intensity of the peak wavelength of the first light L1 and the maximum light intensity of the peak wavelength of the second light L2. can do.

1: Fish-collecting lamp 3: Light source unit 4: Case 6: Heat sink 7: Substrate 10: First LED element (group)
20: Second LED element (group)
30: Power supply unit 31: Switching operation unit 50: Sea surface 51: Underwater 61: Fishing boat 62: Net 70: Fish collecting light 71: White light 80: Fish collecting light

Claims (5)

A first LED element group capable of emitting the first light having a peak wavelength in the range of 600 nm or more and 660 nm or less;
A second LED element group having a peak wavelength within a range of 580 nm or more and 660 nm or less and capable of emitting second light having a shorter wavelength than the first LED element group;
A fish collecting lamp, comprising: a power supply unit configured to be individually energized with respect to the first LED element group and the second LED element group.   The said 1st LED element group and said 2nd LED element group are comprised with the monochromatic LED element which does not contain fluorescent substance, The fish collection lamp of Claim 1 characterized by the above-mentioned.   The maximum light intensity at the peak wavelength of the first light emitted from the first LED element group is higher than the maximum light intensity at the peak wavelength of the second light emitted from the second LED element group. The fish collection lamp according to claim 1 or 2.   The fish collecting lamp according to claim 3, wherein the number of LED elements included in the first LED element group is larger than the number of LED elements included in the second LED element group.   The fish collection lamp according to any one of claims 1 to 4, further comprising a third LED element group capable of emitting white light.

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