JPS6031477Y2 - Fish cage for aquaculture - Google Patents

Description

[Detailed description of the invention] This invention relates to a fish cage for cultivating fish by effectively attracting plankton.

Fish cages are usually used to cultivate fish that have been caught, but conventional fish cages are box-shaped tanks with a net around them, and they float on the ocean, allowing seawater to freely flow through them. At that time, they feed on small fish that sneak through the mesh and feed on plankton.

However, the conventional method described above has the disadvantage that plankton does not gather at night or depending on the state of the seawater, making it impossible to obtain the small fish that seek it.

This invention was developed in view of the above-mentioned circumstances, and is an aquaculture product that actively attracts plankton during the daytime as well as at night, and can secure sufficient small fish as food for the fish in the cage. The purpose is to provide fish preserves.

In the present invention, a storage battery is connected to a solar cell plate to which a solar cell is attached, and a light bulb that is lit inside the cage is connected to the storage battery.

The embodiments shown in the drawings will be described below.

Reference numeral 1 denotes a fish cage, and the fish tank itself is no different from the conventional one, and has a structure in which a net 12 is stretched over a frame 11 and the top is open.

A support post 21 is attached to the side of the fish tank 1, and a solar cell plate 2 on which a large number of solar cells 22 are attached is attached to the upper end of the post 21.
It is equipped with

It is desirable that the angle of attachment of the solar cell plate 2 to the pillar can be changed so that the angle of incidence θ of sunlight can be varied and the solar cell plate 2 can always operate with high efficiency.

It is also preferable to make it removable for convenience in storage and maintenance.

A storage battery 3 is attached to the pillar 21, and the storage battery 3 and the solar cell plate 2 are connected so that the electrical energy converted from the energy of sunlight in the solar battery plate 2 is stored in the storage battery 3. It is connected.

Although there are no particular limitations on the mounting position and method of mounting the storage battery 3, it is desirable that the mounting position and method be determined in consideration of mounting strength and protection from environmental conditions that have adverse effects such as rain or salt wind.

On the other hand, an electric light 4 is connected to the output terminal of the storage battery 3 by wiring.
is connected, and the electric light 4 is arranged so as to turn on and illuminate the inside of the fish tank.

Of course, as with the storage battery 3, the electric light 4 also needs to be wired in consideration of environmental conditions such as seawater.

Further, it is convenient to include voltage adjustment means, such as a slider, so that the brightness of the electric lamp 4 can be adjusted appropriately.

Furthermore, in order to effectively use the stored electrical energy, the electric light 4 is preferably provided with a switch 41 that is activated to turn on the light only when necessary.

For example, a switch that automatically opens and closes by detecting the surrounding brightness so that the light turns on only at night, or a switch that opens and closes at a set time, such as a timer, is connected between the electric light 4 and the storage battery 3.

Next, the operation of the present invention having the above structure will be explained.

Plankton always seek brightness, and during the daytime, the inside of the fish tank 1 is as bright as the outside, so plankton also enter the fish tank 1 along with the seawater flowing into the fish tank 1.

Then, schools of small fish seeking plankton also pass through the mesh of the fish cage 1 and enter the fish cage 1, which becomes food for the cultured fish.

During this time, the switch 41 is open due to the brightness of the outside air and the electric light 4 is off, so that the energy of the sunlight irradiating the solar cell plate 2 is exclusively stored in the storage battery 3 as electrical energy.

Next, at night, the switch is operated to close, current flows from the storage battery 3 to the lamp 4, and the lamp 4 is turned on.

Then, in pursuit of the light emitted by the electric lamp 4, plankton gather in the fish tank 1, and schools of small fish also pass through the mesh and flock into the fish cage 1 following the plankton.

In this way, even at night, a sufficient amount of small fish to feed on can be secured.

Even during the daytime, if you set the brightness of the switch to an appropriate level, the switch will automatically operate and the light will turn on when the weather is sunny, attracting plankton and securing a school of small fish to feed on.

Then, in the morning, the switch 41 is opened upon detecting the brightness, and the storage battery 3 starts storing electricity.

When the switch is opened and closed by a timer, it operates in exactly the same manner as described above, and the light turns on and off at a certain time.

Using a timer is effective when the weather is relatively stable.

Note that the switch 41 does not necessarily operate depending on the brightness.
Alternatively, it may be opened and closed manually at any time without using a timer.

As described above, the present invention stores the energy of the sun during the day as electrical energy in a storage battery, and discharges it at night to turn on the electric light inside the fish tank, so that even at night, plankton and the schools of small fish that follow it are protected. It can be secured in sufficient quantity, does not require electrical energy, is simple and easy to move as equipment, and can greatly save labor and energy.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a schematic diagram thereof. 1... Fish tank, 2... Solar battery board, 22
...Solar battery, 3...Storage battery, 4...
...Light, 41...Switch.

Claims (3)

[Scope of utility model registration request] (1) A fish cage for aquaculture in which a storage battery is connected to a solar cell plate to which a solar cell is attached, and an electric light that is lit inside the cage is connected to the storage battery. (2) The aquaculture according to claim (1) of the utility model registration, characterized in that the electric light is equipped with a switch that turns on and off the electric light by operating at a predetermined ambient brightness. Water tank. (3) The fish cage for aquaculture according to claim 1, wherein the electric light is equipped with a switch that turns on and off the electric light at a predetermined time.