JPS61124333A - Ocean fishery production field apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention actively introduces sunlight into water to increase the number of aquatic organisms. ! The present invention relates to an apparatus for creating an aquaculture farm, and particularly relates to an apparatus for an ocean aquaculture farm suitable for use in expanding fishing grounds to relatively deep waters.

"Prior Art" The habitat of fish and shellfish (for example, sea urchins, abalone, etc.) in the ocean, lakes, and marshes is greatly influenced by the amount of algae that serves as food for these fish and shellfish. Therefore, in order for fish and shellfish to reproduce, it is necessary to have a sufficient amount of algae living there, but the water area suitable for algae to live, that is, the water area where sunlight can reach near the bottom, depends on the water depth and water quality. For this reason, it is limited to a certain area of water.

BACKGROUND ART Conventionally, as a means for breeding aquatic organisms such as algae, fish, and shellfish outside the above-mentioned limited water area, an aquaculture farm apparatus as shown in FIG. 6, for example, has been considered. In this device, an antibody 31 such as a PC pile is driven into the underwater ground G of a deep body of water, and the antibody 31 is made to protrude near the water surface. Underwater farm W132 made of concrete plates etc.
is supported almost horizontally to prevent algae P from breeding on this underwater farm shelf 32.

[Problems to be Solved by the Invention] However, with the device shown in the example in Figure 6, depending on the depth of the water area where it is installed or the condition of the water bottom IG, the cost of creating the device and the profit obtained from the growth of algae may not be profitable. There is a drawback that it becomes impossible to do so. In other words, if the water depth is 10 m or more, or if the underwater ground G is hard or soft, piling work and reinforcement work to make the pile body 31 self-supporting will be required, which will significantly increase the construction cost. Moreover, the construction itself is extremely difficult.

On the other hand, as an aquaculture farm device that is relatively inexpensive to construct, a woven shelf made of rope or the like can be placed at the bottom of the water. While keeping the W
It is known that an attempt was made to germinate algae on a trellis.
However, as the algae on this shelf grow, it becomes heavier and sinks to the bottom of the water, so there is a risk that the algae that have been grown will wither and die in waters with a depth of 10,111 cm or more.

Furthermore, since both of the above devices grow algae near the water surface, when used in the ocean, the seeds are placed on the underwater a-shelf 32 to prevent the algae seeds (spores) from being washed away by the 111 current.
Complicated preparation work is required, such as embedding the paper in the knitting machine shelf (binding it first).

[Means for Solving the Problems] The present invention was made to solve the various problems of the conventional device described above. It is characterized by the use of multiple daylighting devices, each of which is equipped with a floating body and an optical transmission line that transmits the light collected by the daylight plate to the bottom of the water, and these are moored to a submerged body on the bottom of the water via a mooring buoy that floats on the surface of the water. It is said that

"Function" In the marine aquaculture farm device of the present invention, when sunlight enters the lighting plate, the internal phosphor is excited and emits light, and the light from this phosphor propagates aquatic organisms through the optical transmission path. irradiates the bottom of the body of water. In addition, it can be easily installed by simply connecting the daylight to the mooring buoy that is moored to the submerged structure.
By uncoupling the mooring buoy from the daylight, you can easily move or change the water area where it is installed.

"Embodiment" An embodiment of the present invention will be described below based on FIGS. 1 to 5. As shown in FIG. 2, a plurality of submerged bodies 1 are fixed to the bottom of the water at intervals, As shown in FIG. 1, mooring buoys 3 are arranged in a matrix on the water, and these mooring buoys 3 are arranged in pairs. A band-shaped set of daylight groups 4 is provided between the pair of mooring buoys 3. This daylighting group 4 is composed of a plurality of daylighting units 5 arranged between the mooring buoys 3 in each row, and each daylighting unit 5i,
It is connected to mooring buoys 3 at its four corners via connecting culms 6 so as to be swingable only in the vertical direction (direction orthogonal to the plane of the paper in Figure 1).Furthermore, each daylight unit 5 has a long plate shape. ?
! Two daylighting device assemblies 7 are connected in the width direction C row direction (X-X direction in FIG. Vessel assembly 7
In this case, a diffused daylight 8 having a rectangular planar shape is arranged in the row direction (
State where the structure is fixed in two rows in the X-X direction (X-X direction in Fig. 1). It consists of a sinker 9 and an anchor 11 connected to the sinker 9 via a chain 10 to prevent the sinker 9 from sliding.

As shown in FIG. 4, the daylighting device 8 has a plurality of transparent daylighting plates 13 housed inside a floating body 12 in a stacked state, and the water taken in by the daylighting plates 13 is attached to both ends of the stacked daylighting plates 13. A light transmission line 14 is connected to the light transmission line 14 that guides light (for example, sunlight) to the bottom of the water.

To explain this daylighting device 8 in more detail, the floating body 12 includes a rectangular saucer-shaped protective container 15 formed of a corrosion-resistant material, for example, synthetic resin, etc., and a top layer of the daylighting plate that covers the top of this protective container 15. A transparent lid 17 that faces the protective chamber 13 and forms a honeymoon-like protective chamber 16 inside the protective container 15 is installed integrally with the protective container 15 to provide a barrier between the inside and outside of the maintenance room 16. Cooling means for promoting heat exchange, for example, a large number of heat absorption fins 18 protruding into the protection chamber 16 from the inner surface of the protective container 15, and one large number of heat radiating fins protruding into the water from the outer surface of the bottom plate of the protective container 15. The protective container 15 is provided with a reflective surface 20 made of a metal foil or the like pasted on its inner surface, and three of its four outer circumferential surfaces are provided with a pond as shown in FIGS. 3 and 4. A connecting 7 flange 21 for attaching the daylighting device 8 is provided, and a bearing 22 for connecting the connecting culm 6 with a pin as required is provided on the remaining surface as shown in FIG. However, in the case of a protective device for a part of a corner, the connecting flanges 21 need only be provided on two adjacent surfaces of the four outer peripheral surfaces. The lid 17 is made of, for example, tempered glass or reinforced plastic and has a plate shape that is bent or curved upward in a convex manner. At the same time, it acts as a lens and focuses the light onto the lighting plate 13.

Further, the lighting plate 13 is made of thermoplastic resin (for example, acrylic resin, polycarbonate, etc.) and fluorescent substance (for example, carbon dioxide).
a, Ba, M(], oxides such as Zn, Cd, sulfide 1,
The main components are silicic acid groups, tungsten, etc., and Mn.
, AU, Cu, Sb, Pb, etc. are added as activators and fired) are uniformly dispersed and formed into a plate shape, and the bottom surface of the bottom layer lighting plate 13 and both sides of all the lighting plates 13. A reflective layer 23 made of a metal plate, metal foil, or the like is provided on the surface.

Furthermore, the optical transmission line 14 includes a Fresnel lens 24 attached to both end surfaces of the lighting plate 13, which has a plurality of V4 layers.
and a plurality of optical fibers 25 disposed with their ends facing the focal positions of these Fresnel lenses 24. These optical fibers 25 are bundled together in a protection cable 16 to form an optical fiber cable 26.
It penetrates the bottom plate of the protective container 15 and is pulled down to near the bottom of the water.

In addition, the reference numeral 27 in the figure is a waterproof gasket that seals the joint between the protective case @ 15 and the lid 17 and the penetration part of the optical fiber cable 26, and the reference numeral 28 is a bolt and nut that connects the seven connecting langes 21. It shows.

The marine aquaculture farm device configured in this way is such that algae seeds are scattered in advance in a water area where aquatic organisms are desired to breed, and a moored buoy is attached to the water area where the seeds are sown, for example, in the direction of waves crashing in the water area. 3.It is installed with the 1st direction parallel. In other words, the daylight assembly 7 is connected to the connected culm 6.
Since they are connected to each other so as to be able to swing up and down, the daylight unit 5, and by extension, the - set of daylight groups 4, can swing freely as shown in Fig. 2 in accordance with the undulations of the waves.
without colliding with each other, and each lighting device assembly 7 is
Each lighting device 8? Due to the buoyant force of the treadle 12, the toe surface, that is, the tread 17 is kept exposed from the water surface. Therefore, direct light such as the sun and sky light enter the daylighting plate 13 of each daylighting device 8 through the lid (*17) from all directions as shown by the arrow in FIG.
The incident light in the visible region that enters the inside is absorbed by the phosphor in the lighting plate 13 and activates (excites) it, so the phosphor has a spectral component that is shifted to the infrared region compared to the incident light. Light is emitted in a radial direction centered on the phosphor. Next, the emitted light from the phosphors is absorbed by other phosphors to generate new emitted light, or
While repeating reflection to the socket on the upper and lower waterfront surfaces, it finally reaches both ends of the lighting plate 13, and is converged by the Fresnel lens 24 as shown by the arrow (A) in FIG. The edges are irradiated. The irradiated synchrotron radiation is transmitted through the optical fiber cable 26 to near the water bottom f=J, illuminates the water bottom as indicated by the arrow in FIG. 2, and causes algae P on the water bottom to propagate. In addition, lighting board 1 of all C
Incident light that has passed through the reflective layer 23 and reached the reflective layer 23
One light beam is reflected by the reflective layer 23, as shown by the arrow (b) in FIG. 5, and excites the phosphor again.

On the other hand, such marine aquaculture farm equipment consists of a submerged body 1
When installed in the ocean, it can be moved horizontally within a certain radius by natural forces such as the ebb and flow of the tide, changes in tidal currents, and the strength and weakness of waves. Therefore, −
The daylight group 4 illuminates the bottom of the water, which is larger than the area it occupies. If algae grows in the water area where this Koyo Fisheries Farm device is installed and fish and shellfish begin to inhabit, the mooring buoy 3 is connected to the lighting device unit 5 as one unit.
It can be detached from the vessel, towed to another water body, and connected to a mooring buoy 3 installed in another body of water.

By shifting in this way, it is possible to expand the aquaculture farm by using small-scale equipment in a wide range of water areas.

In the above embodiment, the lighting plate 13 may be used as a single piece, and the optical transmission line 14 may be connected to a position other than both ends of the lighting plate 13, for example, on both sides or on the bottom surface. It's okay. However, in the case of connecting to the lower surface, the lighting plate 13 is provided with a reflective surface that changes the direction of the light inside it downward, and the end of the optical transmission path 14 is placed opposite to the bottom of this reflective surface. It is something to do. Furthermore, if a braided body with algae seeds bound is provided on the water bottom between the two submerged bodies, the work of sowing the seeds can be saved.

Furthermore, the lighting device assembly 7 itself may be joined together by a connecting culm 6, depending on the height and wavelength of the waves. In addition, the placement position of the daylight group 4 J5 and the daylight unit 5 can be freely determined in accordance with the sea conditions of the installation area or in consideration of workability, and the placement method of this embodiment It is not specific.

"Effects of the Invention" As explained above, according to the present invention, the following excellent effects can be obtained.

(1) A daylight captures both direct sunlight and skylight, and efficiently transmits the captured light to the bottom of the water, turning the bottom of the water where sunlight could not previously reach into a seaweed bed. This allows aquatic organisms to grow and live in the water area.

In other words, it is possible to expand seaweed beds and fishing grounds to waters where there are few fishing grounds, making it possible to greatly contribute to the development of the fisheries industry in waters where seaweed beds and fishing grounds are scarce.

+b+ Since it is possible to expand the water area to a water area that is deeper than the conventional device, the expansion scale can be several times larger than that of the conventional device.

(C) Installation can be completed by simply sinking the submersible body connected to the mooring buoy to the bottom of the water and connecting the daylight to the mooring buoy.
Regardless of the water depth of the installation water area or the condition of the water bottom,
Construction is easy and construction costs are low.

+d+ The installation water area can be easily moved or changed simply by untying the connection between the mooring buoy and the daylight.

That is, since a small-scale facility can be used in a wide range of water areas, the cost of constructing the device is extremely low based on the benefits obtained by the device.

(e) Since algae can be grown on the bottom of the water where there is little influence from tidal currents, it is possible to prevent algae seeds from being lost due to drifting, and there is no need for premature ejaculation work to prevent loss, which saves labor in installation work.

[Brief explanation of the drawing]

Figures 1 to 5 show one embodiment of the present invention.
The figure is a plan view of the marine aquaculture farm equipment, and Figure 2 is the same as Figure 1.
3 is an enlarged view of the part indicated by the symbol ■ in fig. FIG. 6 is a vertical sectional view schematically showing a conventional aquaculture farm device. 1... Submerged body, 3... Mooring buoy, 5.
...Daylight unit, 6...Connection rod, 8
...Lighting device, 12...Floating body, 13...
...Lighting plate, 14...Optical transmission line, 21...
...Connection flange, 22...Bearing, 24
... Fresnel lens, 25 ... optical fiber, 26 ... optical fiber cable.

Claims (1)

[Claims] A plurality of daylights are moored to a submerged body fixed to the bottom of the water via mooring buoys floating on the water. 1. A marine aquaculture farm device comprising: an optical transmission path for transmitting light to the bottom of the water; and a floating body that holds a lighting plate above the water; the lighting plate has fluorescent material dispersed therein.