JPS6034368Y2 - A small fountain device powered by solar cells - Google Patents

Description

[Detailed Description of the Invention] An object of the present invention is to provide a small fountain device for interior decoration that uses solar cells as a power source and operates the fountain only when sunlight is shining.

Hereinafter, the configuration of the present invention will be explained with reference to drawings of embodiments.

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.

A box-shaped lower container 1 made of opaque hard plastic and a dome-shaped upper container 2 made of transparent hard plastic are integrally bonded together to form a container.

The shape of the lower container 1 is a dome-shaped shelf part 3 with a gentle slope below, and a liquid storage tank 4 is integrally formed on the downstream side of the shelf part 3.

The bottom surface of the lower container 1 is sealed with a substrate 5, and a non-slip rubber or felt 6 is affixed to the bottom surface.

The space below the shelf 3 is a pump room 7 in which a water pump and its motor are installed.

An inverted U-shaped water supply channel 8 is provided on the boundary wall between the liquid storage tank 4 and the pump chamber 7, and a pumping channel 9 is formed from the pump chamber 7 through the shelf 3, and a fountain discharge port 10 communicates with the upper end of the pump channel 9. are doing.

A sloped surface 11 is formed above the liquid storage tank 4 to receive sunlight approximately vertically, and a solar cell 12 is mounted on the surface of the sloped surface 11.
are arranged side by side.

In addition, the output of this solar cell 12 is connected to a motor in the pump chamber 7 without a battery through a normally closed contact 13 that opens when it falls over, and the pump sucks water from the water supply channel 8 and has a fountain outlet. Make it squirt from 10.

Note that air holes 14 are provided in the outer wall of the lower container 1 to prevent pressure changes due to temperature changes within the container, and can also be used for draining water.

Water, colored water, and other liquids can be used as the fountain liquid.

When sunlight hits the solar cell 12, the pump operates and the discharge port 1
Water gushes out from the tank 0, and this water is collected in the liquid storage tank 4 and used for circulation.

When the sunlight stops, the fountain also stops.

Since the water supply channel 8 is formed in an inverted U shape, water does not flow into the pump chamber 7 from the liquid storage tank 4 when the pump is stopped.

In addition, in general, solar cells have a maximum output Pm as shown in FIG.
As is clear from the temperature characteristic diagram of the open circuit voltage Voc1 and the short circuit current Isc, as the element temperature increases, the conversion efficiency decreases.

However, since the back surface of the solar cell 12 according to the present invention is constantly cooled by the stored liquid, a high conversion efficiency can be maintained.

According to the present invention, water is ejected only during sunlight, so it can be placed near a window, in a sunroom, in a car, etc. for decorative purposes.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and FIG. 2 is a temperature characteristic diagram of a solar cell. 1.2...container, 3...shelf, 4...
...Liquid storage tank, 5...Substrate, 7...
Pump room, 8... Water supply channel, 9... Pumping channel, 10... Fountain outlet, 12... Solar cell.

Claims (1)

[Scope of utility model registration request] an airtight container at least whose upper half is made of a transparent body; a fountain outlet projecting from below at the center of the container; and a liquid storage tank formed at a portion of the bottom of the container to collect the fountain;
A lift pump disposed below the fountain outlet; a water channel that supplies liquid from the liquid storage tank to the lift pump and guides the liquid discharged from the lift pump to the fountain outlet; A sloped surface having a slope that receives light approximately vertically and whose back surface is cooled by storage liquid, solar cells arranged in parallel on the sloped surface, and an output of the solar cells. A small fountain device that uses a solar cell as a power source, and is configured to have a DC motor that is directly driven to drive the water pump, and is configured to emit water only when the solar cell receives light.