JPH0372830A - Enjoying device of fish and shellfishes - Google Patents

Abstract

PURPOSE:To obtain the title device capable of limiting a swimming zone of fishes and shellfishes without using a net, etc., and simply controlling without damaging a sense of beauty by applying an electrical voltage between voltages opposingly set in a water tank to form an electrical field and moving both the electrodes in this state. CONSTITUTION:First, electrodes 3 are opposingly set in a water tank 2, an electrical voltage is applied between both the electrodes 3 to form an electrical field 5 to repel fishes and shellfishes. Further, a transferring means to move both the electrodes 3 in a formed state of the electrical field 5 so that a swimming zone of fishes and shellfishes is arbitrarily limited by movement of the electrodes 3 to constitute the objective device. The transferring means, for example, consists of a transfer material 8 which holds the electrodes 3 and is movable along a rail 7, a motor 12 and two wires 10 which are transferred by drive of the motor 12 and transports the transfer material 8.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a behavior control function that limits the swimming area of fish and shellfish in a water tank such as an aquarium by moving or changing an electric field formed in the water. Related to a seafood viewing device.

[Conventional technology]

In recent years, in aquariums and other systems for viewing fish and shellfish, there has been a demand for comprehensive adjustment by artificially placing fish and shellfish in certain areas of the tank.

Conventionally, therefore, a net has been installed in the aquarium to partition it.

[Problem to be solved by the invention]

Conventional methods of installing nets in aquariums are unsightly and
There is a problem in that the bait causes clogging, which impedes water circulation and has a negative impact on fish and shellfish, and requires a great deal of time and effort to manage to prevent clogging.

The present invention has been made with the above points in mind, and an object of the present invention is to provide a seafood viewing device that limits the swimming area of seafood without using a net or the like.

[Means to solve the problem]

In order to solve the above problems, the seafood viewing device of the present invention includes: electrodes disposed opposite to each other in an aquarium; an electric field formed by applying a voltage between the two electrodes to avoid fish and shellfish; and a moving means for moving both the electrodes while the electric field is formed.

In addition, a plurality of opposing electrodes arranged in parallel in the aquarium, an electric field formed by applying a voltage between each of the opposing electrodes and repelling fish and shellfish, and an electric field that is applied between each of the opposing electrodes by sequentially switching the voltage. The device is equipped with a switching means for switching.

The apparatus further includes electrodes disposed opposite to each other in the aquarium, and variable means for varying the voltage applied between the two electrodes to vary the fish and shellfish repellent zone.

[Effect]

In the seafood viewing device of the present invention configured as described above, a voltage is applied between the opposing electrodes to form an electric field that repels the seafood, and both electrodes are moved by the moving means.
The swimming area for seafood can be arbitrarily limited, and management becomes easy without spoiling the aesthetic appearance.

Further, since the voltage is sequentially switched and applied between the plurality of opposing electrodes arranged in parallel by the switching means, the seafood can be moved from one side to the other side and from the other side to one side.

Furthermore, since the voltage applied between the two electrodes is varied by the variable means, the swimming zone of the seafood can be changed only by the applied voltage.

〔Example〕

First, the principle of the present invention will be explained with reference to FIG.

Two electrodes (3) are arranged in parallel on both sides of an aquarium (2) into which water (1) is dripped, and an alternating current is applied to both electrodes (3) by a power source (4).

Apply direct current or pulse voltage to form an electric field (5),
Investigate the electric shock reaction of the fish (6) in the aquarium (2).

That is, fish and shellfish of various body lengths are placed in an aquarium (2), the applied voltage is varied, and the reaction of the fish and shellfish is investigated.

For example, in the case of red sea bream, 2.8V for body length 5a, 10a
1.4V at 20cm, 0.6V at 20cm, ``surprising''
showed a reaction.

In this way, larger fish exhibit a "surprise" or repellent response at lower applied voltages, while smaller fish exhibit no response at that level of voltage.

Therefore, as shown in FIG. 4, the electric fields (5) are formed on both sides of the water tank (2), and both electric fields (5)
When the fish (6) are brought close together, the swimming area of the fish (6) is limited to the center of the tank (2), as shown in Figure 5, and when the electric field (5) of only the book is moved, the swimming area is moved to the left side or Can be on the right side.

Next, FIG. 1 and FIG. 2, which show one embodiment of the means for moving the electric field (5), will be explained.

In the figure, (7) is a rail provided parallel to the front and rear sides, left and right sides, or upper and lower sides of the water tank (2), and (8) is a rail provided movably along the rail (7). The electrodes (3) are held opposite each other through an insulator (9), and a voltage repellent to fish and shellfish is applied between the electrodes (3) from a power source (4). .

tlo] are two loop-shaped wires whose both ends are connected to the movable body (8) through the Boo IJ (It)', and both wires (10) are moved by the drive of the motor (country), and both of the wires (10) are moved. The electrode (3) moves together with the body (8), and the electric field (5) formed between both electrodes (31) moves.

In addition to the flat electrode shown in FIG. 1, the electrode (3) may be a rough grid electrode shown in FIG. I5), and any shape can be selected.

Next, FIG. 8 showing another embodiment will be explained.

In this embodiment, a plurality of opposing electrodes (3) are arranged in parallel in an aquarium (2), and two rotary switches 06 are connected to each other.
) are connected to the corresponding electrodes (3), the movable contacts of both rotary switches 00 are connected to the power source (4), and the opposing electrodes (3) to which voltage is applied by both rotary switches (1G) are connected. 3) are sequentially switched to shift the electric field (5).

In this case, there is no moving object like the moving body (8).

Next, FIG. 9 and FIG. 10 showing still another embodiment will be described.

As shown in the upper part of Fig. 9, when the flat electrodes (3) are placed facing each other in water and the voltage Vp applied to both electrodes (3) is changed by the power supply (4), the graph shown in the lower part of the figure As shown in FIG. 2, the position where the electric field strength E is formed changes.

Now, if the distance from the electrode end of the electric field strength E at which the fish exhibits a "surprise" reaction is X, then the applied voltage Vp is 5 ■TeXI,
8VteXz, IOV"C'X3.15VteX4.2
0VteXs It changes as shown below.

That is, as the applied voltage Vp increases, the position of the startle reaction intensity moves away from the electrode end.

Therefore, as shown in FIG.
) By changing the applied voltage, it is possible to create a surprising electric field strength at any location.
The swimming area of the fish (6) can be limited to any area on the left, right or center.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

A voltage is applied between the opposing electrodes to form an electric field that repels fish and shellfish, and both electrodes are moved by a moving means to move the electric field, so the swimming zone of fish and shellfish can be arbitrarily limited.
Management can be simplified without sacrificing the experience.

In addition, since the voltage is sequentially switched and applied between the plurality of opposing electrodes arranged in parallel by the switching means, it is possible to move seafood from one side to the other side and from the other side to one side without using a mechanism. .

Furthermore, since the voltage applied between the two electrodes is varied by the variable means, the limit of the swimming zone of the fish and shellfish can be changed only by the magnitude of the applied voltage.

[Brief explanation of drawings]

The drawings show an embodiment of the seafood viewing device of the present invention, FIG. 1 is a plan view of a part of the first embodiment, FIG. 2 is a cutaway side view of a part of FIG. 1, and FIG. 3 shows the principle. Front view shown, Figures 4 and 5
The figure is a plan view showing the basics, FIGS. 6 and 7 are illustrations of electrodes, FIG. 8 is a plan view of a part of another embodiment, and FIGS. 9 and 10 are still another embodiment. These are a basic/characteristic diagram and a plan view. (2)... Water tank, (3)... Electrode, (4)... Power supply, (5)... Electric field, (I!... Rotary switch.

Claims (3)

[Claims] (1) Electrodes arranged facing each other in an aquarium, an electric field formed by applying a voltage between the two electrodes and repelling fish and shellfish, and movement of moving the two electrodes while the electric field is formed. A seafood viewing device comprising means. (2) A plurality of opposing electrodes arranged in parallel in an aquarium, an electric field formed by applying a voltage between each of the opposing electrodes and repelling fish and shellfish, and sequentially switching the voltage between each of the opposing electrodes. A seafood viewing device comprising a switching means for applying an electric voltage. (3) A seafood viewing device comprising electrodes disposed opposite to each other in an aquarium, and variable means for varying the voltage applied between the two electrodes to vary the fish and shellfish repellent zone.