JP2016209783A - Static electric field screen generating device, food material storing device and container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a static electric field screen generating device which has a small size, can be driven by a low-voltage application and does not require an earth structure, and to provide a food material storing device/container using the static electric field screen generating device.SOLUTION: A static electric field screen generating device includes: a dielectric coated body which is a dielectric coated body made by coating the surface of at least a part of a negative-electrode conductor which is connected to a negative-electrode terminal and is formed, with an insulator, and has a planar shape provided with a plurality of pores; conductors which are two sheets of conductors facing each other while maintaining a predetermined interval with respect to both surfaces of the dielectric coated body, are affected by an electric field from a dielectric polarization body and are charged and have a planar shape provided with a plurality of pores; and a negative voltage applying means which applies a negative voltage to the negative-electrode terminal. Therein, a continuous electric field is formed by a potential difference between the conductor of positive potential and the dielectric coated body of negative potential which face each other. Electrons pumped-out from the conductor are imparted to the dielectric coated body via a connection line of an earth-less structure and electron transfer via earth is made unnecessary.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electrostatic field screen generator for generating an electrostatic field to form an electrostatic field screen (electrostatic field curtain). The present invention also relates to a food storage device and a container for charging or capturing or repelling pests, mold spores, fungi, and the like using the electrostatic field screen.

There is a need to avoid flying insects such as flying insect pests, floating mold spores, and fungus bodies in facilities as a growing environment for facility cultivation and in living rooms as living environments. If these flying organisms enter the facilities or living rooms, there is a possibility that diseases and insect damage will spread to the plants, and insects may be infested and diseases may occur.
Conventionally, measures have been generally taken to apply and spray chemicals such as insecticides, insecticides, fungicides, and fungicides.

  However, in recent years, due to the heightened safety awareness, the use of pesticides on agricultural crops and pesticide-free cultivation have become popular, and there is a demand for measures against diseases and pests that are effective without using pesticides or with small amounts. . In addition, regarding the dwelling, both insecticide sprays that fill the room and insecticide sprays that are applied to the human body are becoming increasingly repelled due to the risk of chemical damage and the like because the drugs can be absorbed by the human body.

Therefore, in recent years, flying organism removal devices using electrostatic screens and plant protection devices using electrostatic screens have attracted attention as repelling means for pests, mold spores and fungus bodies that do not use drugs. .
An electrostatic field screen is a device that applies a DC high voltage to a metal conductor, generates static electricity on the surface of the insulator covering the electrodes, and traps charged insects, dust, etc. with the insulator by means of static electricity. . FIG. 14 is a diagram for briefly explaining the structure of the electrostatic field screen generating device 00. As shown in FIG. 14, the electrostatic field screen generator 00 applies a positive potential to an electrode group 01 in which a dielectric coating covered with a dielectric made of an insulating resin is arranged in parallel at intervals of several mm to several cm. It comprises a positive potential applying device 02, a negative potential applying device 03 for applying a negative potential, and a ground electrode 04. Here, the electrode group 01 is referred to as an “electrostatic catcher”.
The ground electrode 04 plays a role of preventing contact of the human body with the electrostatic catcher 01, protecting the electrode, and restricting (repelling action) pest adhesion, and an electrostatic field is generated between the dielectric coverings of the electrostatic catcher 01. To do. Insects, dust, and the like that have entered the electrostatic catcher 01 are charged, and are attracted and captured by the electrostatic catcher 01 by a strong Coulomb force.

The inventor of the present application has proposed an invention relating to the following patent document regarding the electrostatic field screen generator 00.
The invention according to Patent Document 1 captures and removes spores of plant pathogenic bacteria that cause plant disease or insect damage by applying force by an electrostatic field to flying organisms such as fungus bodies and small pests, or the removal thereof It is intended to provide a flying organism removing device and a plant protection device for preventing the occurrence of plant disease and insect damage by killing the flying organisms by discharging them even if they are escaped. .

  The invention according to Patent Document 2 can protect both the ground exposed part and the ground non-exposed part of a plant with a single device, and can be handled safely and easily. A device is provided.

  The invention according to Patent Document 3 is an apparatus that can maintain a charged state and obtain a high capture power that does not depend on humidity, such as spores or fungus bodies of phytopathogenic fungi that cause plant pest damage, plant pests, etc. Generation of electrostatic field screens that can capture or repel flying creatures, prevent clogging, enable long-term operation, improve air permeability, and are thin and secure. An apparatus and a flying organism removal method using the same are provided. The invention according to Patent Document 4 is capable of efficiently removing conidia and fungi of phytopathogenic bacteria from the air, and that there is no ozone generation due to electric discharge, etc. A method that can be prevented is provided.

Thus, although this inventor has proposed the above invention about an electrostatic field screen generator, it can classify | categorize roughly into two.
The first is when the electrostatic catcher is monopolar. In the case of a single electrode, an electrostatic catcher and a ground electrode are indispensable in the prior art, and there is a configuration example in which an electrostatic catcher and one ground electrode, or an electrostatic catcher and two ground electrodes are arranged on both sides thereof. there were.
The second is the case where the electrostatic catcher is bipolar. In the case of two poles, the positive electrode and the negative electrode are alternately arranged. In this case, the ground electrode is not particularly required for the electric field configuration. However, in order to ensure safety, it is desirable to arrange the ground electrode on one side or two sides (on both sides) for further controlling the attachment of insects or the like to the electrostatic catcher portion.

  One of the specific uses of electrostatic field screen generators is to install electrostatic field screen generators on the walls and entrances of greenhouses and greenhouses, etc., and to repel pests, mold spores, and fungus bodies in the agricultural field. It is grant of. The inventor of the present application has continued development to apply electrostatic field screen generating devices to walls and entrances of greenhouses and greenhouses, but when applying these electrostatic field screen generating devices, thousands of electrodes are still applied to the electrode group 01. Since it is necessary to apply a high voltage of volts, the arrangement of the ground electrode 04 is an indispensable measure in order to ensure the safety against electric shock of the operator.

Japanese Patent No. 4771310 Patent No. 5216225 Japanese Patent No. 5252449 JP 2006-255690 A

  Here, it has been found that there is a need in the home for the electrostatic field screen generation device, not the large-scale device for the greenhouse or greenhouse described above. If it is a measure against pollen, it will be used like a screen door, but it may be an effective device as a measure against mites. There are many types of ticks, but most of the ticks in the house are dust mites or leopard mites, and even dead ticks and dead bodies can cause allergies. The body length is as small as 0.2 to 0.5 mm, and it is milky white, so it can hardly be seen with the naked eye. It is said that 70 to 80% of people with allergic asthma and atopic symptoms are caused by mite house dust, and these mite allergy countermeasures are very important. Although the basic measure is to remove mites and their allergens, there is no effective measure to remove mites because they can hardly be seen with the naked eye.

  However, if the electrostatic field screen generator is diverted to such a household application, it cannot be applied with a high voltage like a large apparatus attached to a greenhouse or a greenhouse, and in a window frame of a household, etc. It is not always possible to ground the earth via the ground electrode 04. Grounding a device for applying a high voltage to the ground requires a large-scale work such as embedding a member in the ground, and such a large-scale work is not always possible in a general household. Further, the structure of the electrostatic field screen generator itself does not include a large number of electrode groups, but a simpler and lighter device is required.

  In view of the above problems, an object of the present invention is to provide an electrostatic field screen generator that can be driven by applying a small voltage at a low voltage, and that does not require a ground structure, and a food storage device / container using the electrostatic field screen generator. And

  In order to achieve the above object, an electrostatic field screen generator according to the present invention is a dielectric covering in which at least a part of the surface of a negative electrode conductor formed by connecting to a negative electrode terminal is covered with an insulating material. A plate-shaped dielectric coating provided with holes, and two conductors facing each other while maintaining a predetermined interval with respect to both surfaces of the dielectric coating, and charged by receiving an electric field from the dielectric polarization body And a negative voltage applying means for applying a negative potential to the negative electrode terminal, and a continuous electric field due to a potential difference between the opposing positive potential conductor and the negative potential dielectric coating. It is characterized by forming. The size of the hole of the dielectric cover is larger than the size of the hole of the conductor, and is arranged so that all or some of the plurality of holes of the conductor overlap with one hole of the dielectric cover in the ventilation direction. It is preferable. It is more preferable that the holes of 2 to 8 conductors overlap with one hole of the dielectric cover. The holes of the dielectric cover and the holes of the conductor are preferably formed by punching a metal plate by a punching die or laser processing. Furthermore, when the conductor is formed of a conductive sheet obtained by printing conductive ink or conductive paste on paper or a resin material, the weight can be reduced and the cost can be reduced.

  Further, a predetermined interval may be maintained by disposing an insulating spacer in both or one of the gaps between the dielectric polarization body and the two conductors.

  Furthermore, it is convenient for home use to have an earthless structure provided with a connection line for connecting the low potential side terminal and the high potential side terminal of the negative voltage application means from two conductors. This is because the electrons pumped out of the two conductors by applying a negative voltage to the dielectric coating of the negative voltage applying means are moved to the negative voltage applying means side through the connection line of the earthless structure, and the electrons are moved. The structure is such that a negative voltage is applied to the dielectric coating applied with a negative voltage by the negative voltage applying means, and electron movement through the ground is unnecessary. The negative voltage application means includes a switching element provided in a power supply path connected to the battery of the main power supply, a drive circuit that is operable by receiving a voltage supply from the battery, and drives the switching element, An on-prevention circuit that keeps the switching element in the off state when the drive circuit is in the off state, and a power saving that alternately switches the driving state and the stop state of the switching element by intermittently supplying the voltage from the battery to the driving circuit. If the circuit is provided, it is possible to suppress battery consumption. It is preferable that the time distribution of the switching element in the driving state and the stop state is the same, and the alternate switching is performed approximately four times per second.

  Further, when the electrostatic field screen generator of the present invention is used as a food storage device, the box structure is provided with a desired space in which food can be stored, and the electrostatic field screen generator is arranged on a part of the wall surface. It is preferable to have a structure in which ventilation is ensured only through the electrostatic field screen generator and the internal space is shielded from the outside. Furthermore, when applying the electrostatic field screen generator of the present invention as a container, it is a box structure provided with a desired space, and has a structure in which the electrostatic field screen generator is disposed on a part of its wall surface, It is preferable to have a structure that ensures ventilation with the outside world only through the electrostatic field screen generator and shields the internal space from the outside world.

  According to the electrostatic field screen generator of the present invention, an electrostatic field screen can be easily formed by punching a single dielectric coating to form a plurality of holes and disposing a conductor having a plurality of holes on both sides. can do. In addition, if an earth-less structure is realized, a ground electrode that is conventionally required can be eliminated. As the structure of charge transfer, the electrons pumped out of the dielectric coating by applying a negative voltage from the negative voltage applying means are passed through two conductors to the negative voltage applying means side through the connection line of the earthless structure. The structure is such that the electron is moved and given to the dielectric coating body to which the negative voltage is applied by the negative voltage applying means, and the electron movement through the ground is unnecessary. By adopting this earthless structure, when installing the electrostatic field screen generating device and the food storage device, the conventional technology eliminates the need for ground electrode work that involves the laborious work of embedding members in the ground, making the device configuration simple. Thus, it is possible to provide an electrostatic field screen generator, a food storage device, and a container for households and individuals.

It is a front view which shows simply the external appearance structure of the electrostatic field screen generator 100 of this invention. It is sectional drawing of the right side of the electrostatic field screen generator 100 of this invention. It is a figure which shows the dielectric coating (a) which is a component of the electrostatic field screen generator 100 of this invention, and the conductor (b) (c) arrange | positioned in parallel on both surfaces. It is an AA and BB enlarged view of FIG. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is EE sectional drawing of FIG. It is sectional drawing of the right side surface of the electrostatic field screen generator 200 of this invention. It is a figure which shows simply the basic composition including the electric circuit of the electrostatic field screen generator 300 of this invention. It is a figure which shows the structural example of the foodstuff storage apparatus 400 concerning Example 4. FIG. It is a figure which shows the structural example of the container 500 concerning Example 5. FIG. It is a figure explaining simply formation of an electrostatic field and a static electric field of an electrostatic field screen generator by a publicly known technique. It is a figure which illustrates simply the structure (an electric circuit is included) of the electrostatic field screen generator by a well-known technique. It is a figure which illustrates simply another structure (an electric circuit is included) of the electrostatic field screen generator by a well-known technique.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same number is attached | subjected to the same part, and the overlapping description is abbreviate | omitted. It should also be noted that the drawings may be exaggerated to understand the present invention and are not necessarily shown to scale. It should be noted that the technical scope of the present invention is not limited to the specific applications, shapes and dimensions shown in the following embodiments. Hereinafter, embodiments of the electrostatic field screen generator of the present invention will be described with reference to the drawings.

  The present invention is an invention in which the structure of an electrostatic field screen generator, which has been previously developed by the inventor of the present application, particularly called an SD-screen (single-applying / bipolar electrostatic field screen), is further improved. Before describing the embodiment, the basic configuration and principle of the SD-screen 0 shown in the known art (Japanese Patent No. 5252449) will be described with reference to FIGS. Referring to FIG. 12, in the center portion of the SD-screen 0, there is a covering body group 1 arranged in parallel at a desired interval (preferably an interval of 5 mm). The covering body group 1 is produced by passing the iron bar 1a through the soft vinyl chloride 1b. On one side of the covering group 1, there is a stainless steel ground net (ground electrode) 2. The interval between the cover group 1 and the earth net 2 (earth electrode) is 3 mm, and the layers are arranged so that the surface of each layer is parallel. First, when a voltage is applied to the covering body group 1, an electrostatic field is formed around each covering body. The earth net 2 (earth electrode) is inserted into this electrostatic field. Then, for example, when a negative voltage is applied to the covering group 1, the side of the earth net 2 (earth electrode) facing the covering group is positively polarized. That is, by inserting the earth net 2 (earth electrode) into the electrostatic field, a pair of positive and negative electrodes is created in the electrostatic field space, and an electric field (hereinafter referred to as “static electric field”) is formed inside the electrostatic field. is there. In this static electric field, a force that always pushes the movable charge from the negative electrode (covering body group 1) to the positive electrode (earth network 2) works, and when an insect or the like enters, the electric charge of the insect or the like is pushed out and pushed out. The electric charge is absorbed by the earth net 2 (earth electrode). Then, the principle is that insects that have been deprived of charge are positively charged and are attracted and trapped strongly by the negative pole (covering body group 1). Please refer to FIG. The dielectric covering group 1 and the earth net 2 are juxtaposed at positions separated by a space gap 4, and the dielectric covering body 1 and the earth net 2 are held in close proximity using a holding frame 5. The DC high-voltage power supply 6 is electrically connected to the dielectric coating group 1, can apply a DC high voltage to the dielectric coating 1, and the conductor 2 is grounded (grounded). It will be understood that the electrostatic field screen generator 100 of the present invention has been proposed for the purpose of reducing the weight and cost by utilizing the above-described configuration and principle.

  FIG. 1 is a front view simply showing an external configuration of an electrostatic field screen generator 100 of the present invention. FIG. 2 is a cross-sectional view of the right side surface of the electrostatic field screen generator 100 of the present invention. First, referring to FIG. 2, the electrostatic field screen generator 100 includes an electrostatic catcher 10 and a frame 20. The electrostatic catcher 10 is composed of a dielectric cover 11 and two conductors 12 and 13, and the two conductors 12 and 13 have predetermined spatial gaps 32 and 33 with respect to both surfaces of the dielectric cover 11, respectively. It will be understood that the frame body 20 holds the dielectric covering body 11 and the conductors 12 and 13 close to each other in parallel with each other at positions separated from each other. Here, the electrostatic catcher is defined in the present application as being composed of the dielectric covering 11 and the two conductors 12 and 13. In the first embodiment, the distance between the dielectric cover 11 and the conductors 12 and 13 is set to 1 mm. By reducing the separation distance, the electric field strength of the static electric field increases, and a structural current can be generated in a low voltage range.

FIG. 3 is a view showing a dielectric covering 11 which is a component of the electrostatic field screen generating apparatus 100 of the present invention and conductors 12 and 13 arranged in parallel on both sides thereof. Referring to FIG. 3 (a), the dielectric cover 11 has a plurality of holes 111 formed in the base 110 at desired positions and sizes. The substrate 110 may be coated with iron, copper, aluminum, or stainless steel with an insulator such as polyethylene, vinyl chloride, acrylic, nylon, or polystyrene. The insulator preferably has a surface resistance value of 1.0 × 10 9 to 11 Ω / mm 2, but an antistatic agent applied to or in the insulator is added to obtain a desired surface resistance value. The amount should be controlled. As the antistatic agent, a surfactant is mainly used. For example, a nonionic surfactant ether type polyoxyethylene alkyl ether or polyoxyethylene alkylphenyl ether can be used. A plasticizer may be used instead of the antistatic agent. A plasticizer is a compound synthesized from an acid and an alcohol, which is generally used for the purpose of giving flexibility to an insulator mainly made of vinyl chloride. Since the surface resistance value of the plasticizer is lower than the surface resistance value of vinyl chloride alone, the surface resistance value as soft vinyl chloride can be lowered by adding a plasticizer to vinyl chloride. In other words, the plasticizer has an antistatic effect in addition to its original purpose of providing flexibility, so the surface resistance value of the insulator can be set to a desired value by controlling the amount of plasticizer added. Can do it. When the insulator is vinyl chloride, for example, phthalate bisphthalate or diisononyl phthalate can be used as the plasticizer.
The plurality of holes 111 may be formed in a substantially circular shape, a substantially oval shape, a substantially rectangular shape, or the like, but preferably have a diameter of about 6 to 8 mm. Alternatively, a punching metal formed by punching a metal plate with a punching die may be used. In addition, you may form the hole by the design punching of a character or a pattern.

  Refer to FIGS. 3B and 3C. The conductors 12 and 13 are arranged by drilling a plurality of holes 121 and 131 in the bases 120 and 130 at desired positions and sizes. The bases 120 and 130 are substantially the same, and may be literally conductors such as iron, copper, aluminum, or stainless steel, but aluminum is preferable in view of weight reduction. The plurality of holes 121 and 131 may be formed in a substantially circular shape, a substantially elliptical shape, a substantially rectangular shape, or the like, but preferably have a diameter of about 2 to 4 mm. Alternatively, a punching metal formed by punching a metal plate with a punching die may be used. In addition, you may form the hole by the design punching of a character or a pattern. Furthermore, when a conductive sheet obtained by printing a conductive ink or conductive paste on paper or a resin material is used for the conductors 12 and 13, weight reduction can be realized.

  FIG. 4 is an enlarged view of AA and BB in FIG. The state which hold | maintained to the overlapping frame body 20 in the state which placed the dielectric coating | covering body 11 shown in FIG. 3 and the conductors 12 and / or 13 close is shown. That is, the size of the hole 111 of the dielectric covering 11 is larger than the size of the holes 121 and 131 of the conductor 12 or 13, and the appearance as shown in FIG. it can. As will be described later, due to such a structure, in some holes, the holes 121 and 131 of the conductors 12 and 13 are located at the same position as the hole 111 of the dielectric cover 11, and the ventilation is good. In another hole, even if it passes through the said hole, it has the structure where the place which does not ventilate the board | substrate 110 of the dielectric coating 11 may be possible. That is, the structure is such that insects, dust, and the like can be attracted and captured by the electrostatic field formed by the dielectric cover 11 and the static electric field formed by the dielectric cover 11 and the conductors 12 and 13. .

5, 6 and 7 are a CC sectional view, a DD sectional view and an EE sectional view, respectively, of FIG. With reference to FIGS. 5, 6, and 7, a mechanism capable of attracting and capturing insects, dust, and the like even when the electrostatic field screen generating apparatus 100 of the present invention passes wind will be described. First, referring to FIG. FIG. 5 shows a state in which the holes 121 and 131 of the conductors 12 and 13 and the hole 111 of the dielectric cover 11 penetrate in the horizontal direction. When the dielectric covering 11 is energized, an electrostatic field (shown by a dotted line) is formed around it. When the conductors 12 and 13 are disposed in the electrostatic field, a static electric field (shown by dotted diagonal lines) is formed between the dielectric covering 11 and the conductors 12 and 13. In FIG. 5, air can be passed from the hole 121 of the conductor 12 to the hole 131 of the conductor 13 through the hole 111 of the dielectric covering 11, and insects, dust, etc. are not energized unless the electrostatic field screen generator 1 is energized. It can pass through this through-passage, but once energized, it is attracted and captured by an electrostatic or static electric field. In FIG. 5, two electrostatic fields are formed on the top and bottom of the figure, and a non-electrostatic through-passage in which the two electrostatic fields do not overlap is shown. Attracted by an electrostatic or static electric field and captured by the conductors 12, 13 or the dielectric coating 11. In addition, since the strength of the electrostatic field is proportional to the applied voltage, it is possible to narrow the elimination of the non-electrostatic through-passage by adjusting the size of the hole 111 and the applied voltage while considering the ventilation state. is there. Further, the strength of the static electric field is inversely proportional to the distance between the dielectric cover 11 and the conductors 12 and 13. In Example 1, it is the maximum opening state of ventilation by the overlap of the holes 111, 121, 131 shown in FIG.
Reference is now made to FIG. FIG. 6 shows a state in which the holes 121 and 131 of the conductors 12 and 13 and the hole 111 of the dielectric cover 11 penetrate in two directions in the horizontal direction. Similarly to FIG. 5, when the dielectric covering 11 is energized, an electrostatic field (shown by a dotted line) is formed around it. When the conductors 12 and 13 are disposed in the electrostatic field, a static electric field (shown by dotted diagonal lines) is formed between the dielectric covering 11 and the conductors 12 and 13. In FIG. 6, two electrostatic fields are formed up and down toward the figure, and the two electrostatic fields overlap each other, so in the case of a flying insect, the wings of the insects are attracted to the electrostatic or static electric field, Captured by the conductors 12, 13 or the dielectric coating 11. In the case of FIG. 6, the ventilation passage is narrow, and insects and the like that have entered from the hole 121 of the conductor 12 are highly likely to be captured by a static electric field formed between the conductor 12 and the dielectric coating 11.
Please refer to FIG. FIG. 7 shows a state where the holes 121 and 131 of the conductors 12 and 13 and the hole 111 of the dielectric cover 11 do not penetrate in the horizontal direction. When the dielectric covering 11 is energized in the same manner as in FIGS. 5 and 6, an electrostatic field (shown by a dotted line) is formed around it. In FIG. 7, two static electric fields are formed between the conductors 12, 13 and the dielectric covering 11 above and below the holes 121, 131, respectively. Attracted by electric and static electric fields and trapped by conductors 12, 13 or dielectric covering 11 and conductors.
With such a hole structure, when a tick that is not a flying insect invades the hole, it senses danger and leads to repelling behavior, or is captured by a static electric field or an electrostatic field around the hole. .

  FIG. 8 is a cross-sectional view of the right side surface of the electrostatic field screen generator 200 according to the second embodiment of the present invention. Referring to FIG. 8, the electrostatic field screen generator 200 includes a spacer 42 made of an insulator between the dielectric coating 11 and the conductors 12 and 13 of the electrostatic field screen generator 100 shown in FIG. It will be understood that it has a so-called five-layer structure with 43 (indicated by dots). A four-layer structure including either one of the spacers 42 and 43 may be used. The spacers 42 and 43 are inserted in order to separate the distances between the dielectric cover 11 and the conductors 12 and 13 at equal intervals. A static electric field can be uniformly generated by keeping the gap between the dielectric covering 11 and the conductors 12 and 13 at equal intervals. In Example 2, a polypropylene mesh having a thickness of 1 mm is used, but any desired number of holes or nets that can be ventilated with an insulating material may be used. The thicknesses of the spacers 42 and 43 are substantially the same as the space gap 4 shown in the first embodiment.

  Example 3 relates to an electrostatic field screen generator 300 having an earthless structure. FIG. 9 is a diagram simply showing a basic configuration including an electric circuit of the electrostatic field screen generator 300 of the present invention. In FIG. 9, only members necessary for understanding the present invention are shown to facilitate understanding of the internal structure, and some other members may not be shown.

Referring to FIG. 9, the electrostatic field screen generator 300 includes a negative dielectric coating 11, a negative voltage applying unit 50, conductors 12 and 13, and an earthless structure 60.
Here, the dielectric coating 11 is a negative dielectric coating as a negative electrode, but a configuration in which the polarity is reversed and a positive induction coating is also possible. Since the principle is the same except that the polarity is changed, the description of the configuration having the opposite polarity is omitted.
In this example, the output terminal of the DC booster 53 is a negative voltage, and a negative voltage is applied to the dielectric coating 11 to charge the dielectric coating 11 to a negative potential.
The conductors 12 and 13 are conductors that pump up electric charges, and are a kind of earth-equivalent member. By using the conductors 12 and 13, electrons are supplied to the negative voltage application device 50 side through the earthless structure 60. The negative voltage applying device 50 can perform a charge discharging action. In other words, the electrostatic catcher itself is a single electrode having only a negative electrode, but the entire device has a balanced charge.

  Electrons pumped from the conductors 12 and 13 are moved to the negative voltage application device 50 side via the connection line 61 of the earthless structure 60. That is, the electrons pumped from the conductors 12 and 13 without passing through the ground are moved and applied to the dielectric coating body 11 side through the negative voltage application device 50 side as they are, so that electrons through the ground electrode are provided. No need to move.

  The negative voltage application means includes a switching element provided in a power supply path connected to the battery of the main power supply, a drive circuit that is operable by receiving a voltage supply from the battery, and drives the switching element, An on-prevention circuit that keeps the switching element in the off state when the drive circuit is in the off state, and a power saving that alternately switches the driving state and the stop state of the switching element by intermittently supplying the voltage from the battery to the driving circuit. If the circuit is provided, it is possible to suppress battery consumption. It is preferable that the time distribution between the driving state and the stop state of the switching element is the same, and the alternate switching is approximately four times per second.

The fourth embodiment is an example of a food storage device 400 in which the electrostatic field screen generators 100, 200, and 300 shown in the first, second, and third embodiments are applied to a part of a wall surface.
As described above, in general houses, there is a great demand for controlling ticks that enter foods stored at room temperature. An example in which the electrostatic field screen generator of the present invention is also applied to a food storage device will be described.

FIG. 10 is a diagram illustrating a configuration example of the food storage device 400 according to the fourth embodiment.
A food storage device 400 shown in FIG. 10 has a cubic box structure, includes a wall surface 410, and an electrostatic field screen generator 300 having a groundless structure provided on a part of the wall surface 410. Includes a lid 420 to which a handle 421 can be attached at a desired position. The food material may be stored in the internal space by opening and closing the lid 420. Here, as an example, the electrostatic field screen generator 300 shown in the third embodiment is incorporated, but the electrostatic field screen generators 100 and 200 shown in the first or second embodiment are also applicable. .

  The food storage device 400 is shielded from the outside by a wall surface 410 and holds an internal space. In order to prevent the entry of minute ticks or the like, a structure having a firm structure so that no gap is generated in all directions is preferable. In addition, the food storage device 400 can be sized according to the size of the food containing the space for containing the food.

  Here, the food storage device 400 of the present invention has a structure in which the electrostatic field screen generator 300 is disposed on a part of the wall surface 410. Only through this electrostatic field screen generator 300, ventilation with the outside world is ensured, and the internal space is shielded from the outside world.

  The configuration shown in FIG. 10 has a structure in which an electrostatic field screen generating device 300 is disposed on two opposing wall surfaces. The electrostatic field screen generating device 300 captures pests such as ticks, dust, and the like while capturing air. Since the electrostatic field screen generator 300 is disposed on the two wall surfaces so as to face each other, it passes through the inside of the food storage device 400 from one outside and goes out to the other outside. And good ventilation is possible.

The fifth embodiment is an example of a container 500 in which the electrostatic field screen generators 100, 200, and 300 shown in the first, second, and third embodiments are applied to a part of a wall surface.
Even in shipping containers, there is a great demand for ventilation and pest control for transported goods stored at room temperature. The same applies to the case where such a container is modified into a living space. Therefore, an example in which the electrostatic field screen generator of the present invention is applied to a container will be described.

FIG. 11 is a diagram illustrating a configuration example of a container 500 according to the fifth embodiment.
A container 500 shown in FIG. 11 has a rectangular parallelepiped box structure, includes a wall surface 510, and an electrostatic field screen generator 300 having an earthless structure is provided on a part of the wall surface 510. The container can enter the internal space by opening and closing the door 521. Here, as an example, the electrostatic field screen generator 300 shown in the third embodiment is incorporated, but the electrostatic field screen generators 100 and 200 shown in the first or second embodiment are also applicable. .

  A container 500 according to the present invention has a structure in which an electrostatic field screen generator 300 is disposed on a part of a wall surface 510 and can be opened and closed by a door 521, but once the door 521 is closed, the electrostatic field screen generator is provided. The ventilation with the outside world is ensured only through 300, and the internal space is shielded from the outside world.

  In the configuration shown in FIG. 11, the electrostatic field screen generator 300 is disposed on two opposing wall surfaces 510. The electrostatic field screen generator 300 captures insects, dust, and the like while ventilating air. Therefore, if the electrostatic field screen generator 300 is arranged so as to face the two wall surfaces, it can pass from one outside world to the inside of the container 500 and to the other outside world, Excellent ventilation is possible.

As mentioned above, according to the electrostatic field screen generator of this invention, it can be set as the simple structure which does not require the ground electrode conventionally required. By adopting this earthless structure, when installing the electrostatic field screen generating device, food storage device / container, the conventional technology eliminates the need for ground electrode work that involves the laborious work of embedding members in the ground, and the device configuration is reduced. It becomes simple and can provide an electrostatic field screen generator and a food storage device / container for households and individuals.
In addition, according to the food storage device of the present invention, it is possible to repel pests such as mites, mold spores and fungal bodies around the kitchen of a general household, etc., and a sufficient ventilation is ensured. It is possible to provide an excellent food storage environment.
Furthermore, according to the container of the present invention, it is possible to provide an excellent container that can repel pests during container transportation and that ensures sufficient ventilation.

  As mentioned above, although the electrostatic field screen generator of the present invention and the food storage device / container using the same have been described, it is understood that various modifications can be made without departing from the technical scope of the present invention. Will be done.

  INDUSTRIAL APPLICABILITY The present invention can be widely applied as an electrostatic field screen generator capable of avoiding and capturing flying creatures with a simple and small configuration. In addition, the present invention can be widely applied as a food storage device for vegetables and flour that can be stored at room temperature with a simple and small configuration. Further, it can be widely used as a container for transportation that requires ventilation or a living space using the container.

11 Dielectric coating
12 13 conductor
32 33 Spatial gap
42 43 Spacer
20 frame 100 200 300 electrostatic field screen generator
60 Earthless structure
400 Food storage device
500 containers

Claims (11)

A dielectric covering in which at least a part of the surface of the negative electrode conductor formed by connecting to the negative electrode terminal is coated with an insulator, and a flat plate-shaped dielectric covering having a plurality of holes;
Two conductors facing each other while maintaining a predetermined interval with respect to both surfaces of the dielectric cover, and are a plate-shaped conductor having a plurality of holes that are charged by receiving an electric field from the dielectric cover When,
Negative voltage application means for applying a negative potential to the negative terminal,
The size of the hole of the dielectric cover is larger than the size of the hole of the conductor, and all or a plurality of the holes of the conductor in the hole of the dielectric cover with respect to the ventilation direction. An electrostatic field screen generator that forms a continuous electric field between a positive potential conductor and a negative potential dielectric covering, which are arranged so as to partially overlap each other, by a potential difference.   2. The electrostatic field screen generator according to claim 1, wherein the hole of the dielectric coating and the hole of the conductor are formed by punching a metal plate with a punching die.   The electrostatic field screen generator according to claim 1, wherein the conductor is formed of a conductive sheet obtained by printing a conductive ink or conductive paste on paper or a resin material.   4. The electrostatic field screen generator according to claim 1, wherein the predetermined distance is maintained by disposing an insulating spacer in a gap between the dielectric covering and the conductor. . 5. The electrostatic field screen generator according to claim 1, further comprising an earthless structure provided with a connection line connecting the two conductors and a high potential side terminal of the negative voltage applying means.   Electrons pumped from the two conductors by applying a negative voltage to the dielectric coating of the negative voltage applying means are moved to the negative voltage applying means side through the connection line of the earthless structure, and 6. The electrostatic field according to claim 1, wherein electrons are supplied to the dielectric coating body to which negative voltage is applied by the negative voltage applying means, and electron movement through ground is unnecessary. Screen generator. The negative voltage applying means is
A switching element provided in the power supply path connected to the battery of the main power supply,
A drive circuit that is operable by receiving a voltage supply from the battery and that drives the switching element;
An on-prevention circuit for holding the switching element in an off state when the drive circuit is in an off state;
7. The power saving circuit according to claim 1, further comprising a power saving circuit that intermittently supplies voltage from the battery to the driving circuit and alternately switches between a driving state and a stopped state of the switching element. Electrostatic screen generator.   The electrostatic field screen generator according to claim 7, wherein time distribution of the driving state and the stop state of the switching element is the same.   The electrostatic field screen generator according to claim 7 or 8, wherein the switching of the switching element between the driving state and the stop state is approximately four times per second.   A box structure having a desired space capable of containing foodstuffs, wherein the electrostatic field screen generator according to any one of claims 1 to 9 is disposed on a part of a wall surface of the box structure, A food storage device that ensures ventilation with the outside world only through an electrostatic field screen generator and shields the internal space from the outside world.   A box structure having a desired space, wherein the electrostatic field screen generating device according to any one of claims 1 to 9 is provided on a part of a wall surface of the box structure. A container that ensures ventilation with the outside world only through the device and shields the internal space from the outside world.

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