JP2631817B2 - Rain detection device and house equipped with rain detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rainfall detecting device and a house provided with the rainfall detecting device which are particularly useful in a volcanic region where ash falls.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view of a conventional rainfall detecting device. Reference numeral 51 denotes an insulating substrate on which two conductive patterns 52 and 53 are formed at small intervals, and the patterns 52 and 53 are connected to control circuits (not shown) through lead wires 54 and 55, respectively. It is connected to the. Therefore, if the water droplet 56 adheres anywhere on the patterns 52 and 53, the patterns 52 and 53 are electrically short-circuited and detected as rainfall. This conventional rainfall detection device must be installed horizontally because the waterdrop does not stop and the waterdrop is difficult to detect when the substrate 51 is inclined.

[0003]

By the way, in a volcanic area such as Sakurajima, for example, there is a large amount of ash caused by the eruption of the volcano. Easy to pile on top. Therefore, even if it rains, the ash deposited on the upper surface is difficult to flow out, and even after the rain stops, the wet ash remains on the upper surface of the substrate 51 and malfunctions easily. Further, in the case of light rain, the ash on the substrate 51 was easily solidified with moisture, and even if the rain stopped, the short-circuit state was maintained and malfunction was liable to occur. Furthermore, since this type of rain detection device is installed exposed to the outdoors, birds stop and blow, and the patterns 52 and 53 are short-circuited due to the blow, and erroneously detected as rain even in fine weather. It was easy to do.

In recent years, agricultural products are often cultivated in greenhouses or other greenhouses. As this type of house, there is a house provided with an opening / closing unit for ventilation.
Conventionally, a rainfall detection device is installed in such a house, and when rainfall is detected, a drive unit such as a motor is driven to automatically close the opening / closing unit so that rain does not fall in the house. Things are known. As such a house rain detection device, a conventional rain detection device as shown in FIG. 4 is frequently used.
In particular, rainfall is likely to be erroneously detected in a region where ash falls a lot, so that the opening / closing section of the house tends to malfunction. Therefore, an object of the present invention is to provide a rain detection device useful in a volcanic region and a house provided with the rain detection device.

[0005]

For this purpose, the present invention provides a rain receiving plate 2 which is disposed obliquely, and coiled electrodes 12 and 13 which are wound around an insulating bar 11 alternately with a gap therebetween.
A rainfall detection device 1 is constituted by the raindrop detection unit 10 provided with the raindrop detection unit 10, and the raindrop detection unit 10 is hidden behind the lower end of the rain receiving plate 2. Further, the opening and closing of the opening and closing unit 31 of the house 30 is controlled by an output signal of the rainfall detecting device 1.

[0006]

According to the above construction, the raindrops 5 dropped on the rain receiving plate 2 flow down on the rain receiving plate 2, and the electrode of the rain drop detecting unit 10 disposed at the lower back of the lower end thereof. Rain is detected by dropping and attaching between the electrodes 12 and 13 and short-circuiting between the electrodes 12 and 13. Also, even if the ash deposited on the rain receiving plate 2 is washed away by rain and adheres to the electrodes 12, 13, the electrodes 12, 13 are wound in a coil shape and have a columnar shape. Rain falls off the electrodes 12 and 13 well, so there is no long-term short circuit with ash-containing raindrops after the rain has risen. Further, since the raindrop detector 10 is hidden behind the lower end of the rain receiving plate 2, there is no possibility that a bird droppings adheres and is erroneously detected as rainfall. In addition, the presence or absence of rain can be accurately and promptly detected by the rain detection device 1, and the opening and closing of the opening and closing unit 31 of the house 30 can be controlled.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of the rainfall detection device, and FIG. 2 is a front view thereof. The rainfall detecting device 1 is configured as follows. 2 is a rain tray. The rain receiving plate 2 is mounted on a support 9 erected in a greenhouse or the like for cultivating crops with a support plate 3, bolts 4, and the like.

The rain receiving plate 2 is disposed with a downward slope, and the lower end thereof is a curved portion 2a. Therefore, the raindrop 5 that has fallen on the rain receiving plate 2 flows down on the rain receiving plate 2 and drops from the lower end of the curved portion 2a. The rain receiving plate 2 has a large vertical size and a horizontal size so that a large amount of rain drops flow down to a rain drop detecting unit (described later), thereby increasing a rain drop collecting area.

A raindrop detector 10 is provided below the curved portion 2a. The raindrop detector 10 includes a coiled first electrode 12 and a second electrode 1 on a cylindrical insulating bar 11.
3 are alternately wound with a slight gap therebetween. Both ends of the insulating bar 11 are attached to lower ends of a support frame 15 via support bolts 14. Reference numeral 16 denotes a nut screwed to the support bolt 14.
The upper end of the support frame 15 is attached to the lower surface of the rain receiving plate 2. The raindrop detecting unit 10 is disposed in a horizontal posture as shown in FIG. 2, and as shown in FIG.
It is disposed at a depth D behind the distal end surface of the curved portion 2a with the distance D hidden. By forming the lower end portion of the rain receiving plate 2 into a curved portion 2a, the raindrop detecting unit 10 can be hidden behind the front end portion of the rain receiving plate 2 by a distance D, so that the bird dropping falls and adheres. In addition, the raindrop 5 can be reliably prevented from flowing down along the surface of the curved portion 2a, and can be surely dropped onto the raindrop detection unit 10. In FIG. 1, reference numeral 17 denotes a cord connected to the electrodes 12 and 13, which is connected to a control panel (not shown). The insulating bar 11 is desirably formed of a material having a large specific heat and a dark color that easily absorbs solar heat so that the raindrops quickly evaporate and dry with solar heat after the rain stops.

The rainfall detecting device 1 is configured as described above, and its operation will be described below. In FIG. 1, the raindrop 5 that has fallen on the rain receiving plate 2 flows down on the rain receiving plate 2, flows along the upper surface of the curved portion 2a, and then drops from the lower end of the curved portion 2a. It adheres to the first electrode 12 and the first electrode 13. As a result, the first electrode 12 and the second electrode 13 are short-circuited, and rainfall is detected.

As mentioned above, in the volcanic region,
Ash falls due to the eruption. The ash deposited on the rain receiving plate 2 mixes with the raindrops due to the rain, flows down the rain receiving plate 2, and adheres to the first electrode 12 and the second electrode 13 of the rain detection unit 10. The electrode 12 and the second electrode 13 are insulated bar 11
The first electrode 12
And the raindrops attached to the second electrode 13 drain off the first electrode 12 and the second electrode 13 with good drainage. Therefore, the first electrode 1 is kept for a long time even after the raindrops containing ash
The short-circuit state is quickly released when the rainfall stops without adhering to the second and second electrodes 13. In addition, raindrop detector 1
Since 0 is hidden behind the curved portion 2a of the rain receiving plate 2,
It is possible to eliminate erroneous detection of rainfall due to the attachment of bird droppings without bird droppings attaching. The rainfall detection device of the present invention,
It is particularly useful in the volcanic region, but it goes without saying that it may be used outside the volcanic region.

FIG. 3 shows a house 30 provided with the rainfall detecting device 1 described above. The house 30 is provided with an opening / closing unit 31 for ventilation. The opening / closing section 31 is automatically opened / closed by driving means (not shown) such as a motor. Further, the rainfall detection device 1 is installed on a column 9 erected on the side of the house 30. The rainfall detection device 1 is connected to a control panel 32 by a cord 17. Therefore, when the rainfall detecting device 1 detects rainfall, the output means activates the driving means to automatically close the opening / closing section 31,
When the rain stops, the opening and closing unit 31 is automatically opened. If the rainfall detection device 1 is attached to the house 30 as described above, it is possible to accurately and quickly detect the presence or absence of rainfall and control the opening and closing of the opening and closing unit 31.

[0013]

As described above, the rainfall detection device of the present invention can detect rainfall with a simple configuration and has high sensitivity, and is particularly useful as a rainfall detection device in a volcanic area where ash falls a lot. Further, by forming the lower end portion of the rain receiving plate 2 as a curved portion 2a, the raindrop detecting unit 10 can be hidden behind the lower portion of the rain receiving plate 2, thereby preventing the bird droppings from dropping and adhering. The raindrops 5 can be reliably prevented, and the raindrops 5 can flow down along the surface of the curved portion 2a, so that the raindrops 5 can be reliably dropped on the raindrop detector 10. In addition, it accurately and quickly detects the presence or absence of rainfall,
The opening / closing section 31 of the house 30 can be opened and closed accurately.

[Brief description of the drawings]

FIG. 1 is a side view of a rainfall detection device according to an embodiment of the present invention.

FIG. 2 is a front view of a rainfall detection device according to one embodiment of the present invention.

FIG. 3 is a side view of a house provided with a rainfall detection device according to one embodiment of the present invention.

FIG. 4 is a perspective view of a conventional rainfall detection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rain detection device 2 Rain receiving plate 2a Curved part 5 Raindrop 10 Raindrop detection part 11 Insulating bar 12 First electrode 13 Second electrode 30 House 31 Opening / closing part

Claims (3)

(57) [Claims] A raindrop detecting plate provided with coil-shaped electrodes wound around an insulating bar with a gap therebetween. A rainfall detecting device, wherein the raindrop detecting unit 10 is hidden behind a lower end portion of the rain receiving plate 2 and installed. 2. A curved portion 2a is formed at a lower end portion of the rain receiving plate 2, and the raindrop detecting portion 10 is installed hidden behind a lower portion of the curved portion 2a. Item 4. The rainfall detection device according to Item 1. 3. A rain receiving plate 2 having an inclined arrangement, and a raindrop detecting unit 10 having coiled electrodes 12 and 13 wound around an insulating bar 11 alternately with a gap therebetween. A rain detection device 1 having the raindrop detection unit 10 hidden behind a lower end of the rain receiving plate 2, and an opening / closing unit 31 of the house 30 based on an output signal of the rain detection device 1. A house provided with a rainfall detecting device, characterized by controlling opening and closing of a house.