WO2021090935A1

WO2021090935A1 - Pest trapping device and building

Info

Publication number: WO2021090935A1
Application number: PCT/JP2020/041604
Authority: WO
Inventors: 太輔五百崎; 真吾寳角; 則之安池; 浩史久保田
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2019-11-08
Filing date: 2020-11-06
Publication date: 2021-05-14
Also published as: JP7182118B2; JPWO2021090935A1

Abstract

A pest trapping device (100) is provided with: a housing (21); an intake unit (34) which brings external air into the housing (21); and a container unit (32) which is disposed inside the housing (21) and which has accommodated therein an attractant for attracting pests. The housing (21) has a first opening (25) which is formed in a top surface of the housing (21) and through which the air brought in by the intake unit (34) and containing the attractant that has turned into gas is released.

Description

Pest capture device and building

The present invention relates to a pest catching device and a building in which the pest catching device is installed.

Conventionally, for pests such as mosquitoes and flies, it is difficult to directly capture these pests, so a method of filling the space with an insecticide or the like has been generally performed. Further, Patent Document 1 discloses a blower device that emits light exhibiting an attracting effect to pests and captures the pests attracted by the light with an adhesive insect trapping sheet.

International Publication No. 2017/208491

However, there were cases where pests could not be effectively captured by the above-mentioned conventional methods. Therefore, the present disclosure provides a pest catching device or the like capable of catching pests more efficiently.

The pest catching device according to one aspect of the present disclosure includes a housing, a suction unit that sucks air outside the housing, and an attractant that is arranged inside the housing to attract pests. The housing is provided with a container portion to be accommodated, and the housing is provided on the upper surface of the housing, and air sucked in the suction portion and containing the attractant which has changed into a gas is released. Has a first opening.

Further, the building according to one aspect of the present disclosure is provided with a wall on which the pest catching device described above is installed so that the first opening is at a position higher than half of the ceiling height.

According to the pest catching device and the like disclosed in the present disclosure, pests can be caught more effectively.

FIG. 1 is an overview view showing a building in which the pest trapping device according to the embodiment is installed. FIG. 2 is a diagram for explaining the behavioral characteristics of a mosquito based on the relative distance between the mosquito and the person to be bitten. FIG. 3A is an external view of the pest trapping device according to the embodiment. FIG. 3B is a cross-sectional view of the pest catching device cut along the line BB shown in FIG. 3A. FIG. 3C is an external view of the pest trapping device according to another example of the embodiment.

(Background to this disclosure and outline of this disclosure)
Conventionally, the active ingredient of an insecticide is sprayed into the space by a method such as incomplete combustion or electric heating by electric heat conversion to capture pests in a building such as a house. Insecticides that are filled with active ingredients are used. Such an insecticide has a high effect of catching pests because the active ingredient is distributed in the space. On the other hand, there is a problem that an organism such as a human being breathes in a space filled with an active ingredient, which adversely affects the health of the organism.

As an alternative technique for capturing pests, for example, a technique using ultraviolet light as shown in Patent Document 1 has been proposed. Such techniques of using ultraviolet light to attract pests do not use pesticides, thus reducing the potential for adverse health effects on the organisms mentioned above. However, the visual sense of pests and the like is often underdeveloped, and it is necessary for the pests to recognize the emitted ultraviolet light with the undeveloped visual sense. For example, the eyesight of mosquitoes is said to be extremely poor (less than 0.003). Therefore, in the case of a pest trapping device that attracts and captures pests using ultraviolet light, the pests that are attracted by the ultraviolet light are limited to the immediate vicinity of the device. That is, there is a problem that it is difficult to attract and capture pests that exist at a position relatively far from such a pest capture device.

Therefore, the pest catching device in the present disclosure enables safe and effective pest catching by spreading the pest catching effect widely in the space while reducing the possibility of adversely affecting health. is there.

In the present disclosure, the pest capture device releases an attractant that can attract pests into the space, and distributes the attractant into the space with a predetermined concentration gradient. Specifically, the pest capture device in the present disclosure states that the air for forming such a concentration gradient of the attractant in the space is in a gas state with respect to the suction unit that sucks the air from the space and the sucked air. It comprises a housing having an opening for containing and discharging the altered attractant. Such an opening is provided on the upper surface of the housing, and air containing an attractant, which contains a vertical component, is discharged in a direction intersecting a horizontal plane. With such an arrangement of openings, the air containing the attractant causes the attractant in the space to form a predetermined concentration gradient while avoiding obstacles existing in the space, such as furniture in a living space.

As the attractant adopted in the present disclosure, pheromones emitted by various pests and analog chemical substances thereof may be used, and in the case of pests such as biting mosquitoes and flies, they are emitted from the living body to be bitten. Chemical substances to be used may be used. For example, for mosquitoes, it is effective to use _{carbon dioxide (or sometimes referred to as CO 2) and lactic acid emitted from the human body as attractants.} The attractant may be a volatile or sublimable chemical substance that can be placed in an air stream and distributed at a predetermined concentration gradient, and may be appropriately selected and used according to various pests to be captured. It is possible to do.

Further, even if it is a chemical substance that does not have volatile or sublimable properties, it is possible to realize a similar pest trapping device as an aerosol or the like by making the liquid surface ruffle with ultrasonic waves or the like. However, since such an aerosol is heavier than air, it is difficult to form a predetermined concentration gradient in the space unless a relatively strong air flow is used and a sufficient flight distance can be achieved.

Hereinafter, the embodiment will be specifically described with reference to the drawings. It should be noted that all of the embodiments described below show comprehensive or specific examples. Numerical values, shapes, materials, components, arrangement positions and connection forms of components, steps, order of steps, etc. shown in the following embodiments are examples, and are not intended to limit the present disclosure. Further, among the components in the following embodiments, the components not described in the independent claims will be described as arbitrary components.

Note that each figure is a schematic diagram and is not necessarily exactly illustrated. Further, in each figure, substantially the same configuration may be designated by the same reference numerals, and duplicate description may be omitted or simplified.

(Embodiment)
[Device configuration, etc.]
FIG. 1 is an overview view showing a building in which the pest trapping device according to the embodiment is installed. As shown in FIG. 1, the pest trapping device 100 according to the present embodiment is installed in an indoor space separated by building materials such as walls 201 and fittings constituting the building 200. In the embodiments described below, mosquitoes are exemplified as pests and lactic acid is exemplified as an attractant. However, as described above, the pest capture device 100 of the present disclosure is configured for any combination of pests and attractants. can do.

Examples of other pests of mosquitoes include small flying insects such as flies and small bees and pests such as flies, moths, bees and cockroaches. Since the pest capture device 100 captures the pest to be captured by inhalation, the pest is particularly preferably a flying insect. Among such pests, mosquitoes are said to be the most deadly creatures that transmit various infectious diseases such as malaria, Japanese encephalitis, West Nile fever, Zika fever, dengue fever, and chikungunya fever. It is a pest that is affected.

Here, the behavioral characteristics of mosquitoes will be described with reference to FIG. FIG. 2 is a diagram for explaining the behavioral characteristics of a mosquito based on the relative distance between the mosquito and the person to be bitten. FIG. 2 shows a mechanism in which the mosquito 11 recognizes the person 13 to be bitten and approaches the person 13 by an action based on the recognition. As described above, since the mosquito 11 has extremely poor eyesight, at a position where the relative distance from the person 13 is long, the mosquito 11 detects the attractant substance emitted by the person 13 and moves toward a direction in which the concentration of the attractant substance is high. _{The attractants include CO 2} contained in the exhaled breath, lactic acid contained in sweated sweat, and odorous substances secreted by the indigenous bacteria propagated in an environment suitable for the propagation of indigenous bacteria such as the sole of the foot. Secretions are mentioned.

The mosquito 11 detects such an attractant by a highly sensitive antennae and moves along the concentration gradient toward the one having a higher concentration of the attractant. By this behavior, the mosquito 11 moves toward the person 13 having the highest concentration of the attractant (that is, the source of the attractant). For example, when the mosquito 11 approaches a relative distance that allows the person 13 to be visually recognized, as shown by a broken line in the figure, the mosquito 11 moves around the person 13 while, for example, the skin is exposed. Search for a suitable location for biting.

At this time, the mosquito 11 reacts to ultraviolet light and visible light, especially light and dark, and moves toward a place with low lightness (that is, dark). At this time, the mosquito 11 detects the temperature and moves toward the source of the body temperature radiated by the person 13. In this way, the mosquito 11 moves according to the concentration gradient of the attractant while the relative distance to the person 13 is long, and when the relative distance to the person 13 is close, the mosquito 11 moves according to the visual sense or the like and bites the person 13.

Returning to FIG. 1, the pest catching device 100 in the present embodiment is a device that attracts the pest by utilizing the behavioral characteristic that the pest moves according to the attractant substance, and sucks and catches the pest by an air flow. In particular, as described above, for example, the mosquito 11 accurately detects the concentration gradient of the attractant and moves to the higher concentration gradient. That is, an attractant for attracting pests or a chemical substance imitating the attractant is prepared as an attractant, and the space is artificially filled with the attractant. At this time, when the attractant is filled with the attractant so as to form a predetermined concentration gradient toward the pest catching device 100, the pest catches the pest catching device due to the behavioral characteristics as illustrated in the above mosquito 11. It naturally moves toward 100.

Here, the pest catching device 100 is installed so as to be embedded in the wall 201 as shown in the figure. Specifically, air containing an attractant is discharged to at least one of the walls 201 of the building 200, which is higher than half of the ceiling height H1, for example, at the position indicated by the height H2 in the drawing. The pest catching device 100 is buried so that the opening is located.

By embedding the pest catching device 100 of the present disclosure in the wall 201 in this way, the space required for installing the pest catching device 100 can be made compact. Moreover, since it is not necessary to place the pest catching device 100 on the floor, the floor can be effectively used. Further, the opening through which the air containing the attractant of the pest trap 100 is released can be arranged at a higher position so that the attractant can be effectively sprayed to every corner of the space. Generally, the ceiling height of a living room in a residential building is about 250 to 280 cm. The height of the bed, which can be an obstacle when spraying the attractant, is about 50 cm. Similarly, the height of the work surface of the desk, which can be an obstacle, is about 80 cm. When a person sits on a chair or the like, the height above the head is about 120 cm. Therefore, if there is an opening through which air containing the attractant is released at a position higher than about 125 to 140 cm, which is half the ceiling height, the attractant can be effectively indoors without being disturbed by the above obstacles. Can be sprayed in space.

Next, the specific configuration of the pest capture device 100 will be described with reference to FIGS. 3A, 3B, and 3C. FIG. 3A is an external view of the pest trapping device according to the embodiment. Further, FIG. 3B is a cross-sectional view when the pest catching device is cut along the line BB shown in FIG. 3A. Further, FIG. 3C is an external view of the pest catching device according to another example of the embodiment. As shown in FIG. 3A, the pest capture device 100 according to the present embodiment includes a rectangular parallelepiped housing 21 in which approximately half of the pest capture device 100 is embedded in the wall 201 of the building 200. The housing 21 is formed of a hard material such as resin or metal that can maintain a three-dimensional shape. The pest catching device 100 is not limited to such a shape, and can be realized by any shape such as a prism or a sphere.

Here, the pest trapping device 100 has an opening on the front surface (outer surface of the housing 21 on the front side of the paper surface) parallel to the surface of the wall 201 for sucking the air outside the housing 21 into the inside of the housing 21. .. This opening is different from the opening through which air containing the attractant lactic acid is released. In the following description, of the two openings, the opening involved in the intake of air will be referred to as the third opening 23, and the opening involved in the release of air will be referred to as the first opening 25.

A fan 30 is provided inside the housing 21 of the third opening 23 as shown in FIG. 3B. Here, the propeller fan is illustrated as the fan 30, but as the fan 30, a fan having an arbitrary structure such as a sirocco fan, a turbo fan, a plate fan, and a cross flow fan can be used. The fan 30 sends air from one side of the rotating surface intersecting the rotating shaft of the fan 30 to the other side by rotational driving by a power source such as a motor, thereby applying a negative pressure to one side and a positive pressure to the other side. It is a blower to generate each. Further, even if a cylindrical wind tunnel is provided along the outer shape of the fan 30 as viewed from the direction of the rotation axis so that the negative pressure generated by the fan 30 is not lost inside the housing 21 with the third opening 23. Good. In the present embodiment, the wind tunnel is integrated with the housing 21 in a shape extending from the third opening 23 to the inside of the housing 21, and will be described as a part of the housing 21. In this way, the fan 30 forms the airflow shown by the white arrow in FIG. 3B.

The airflow flows from one side of the fan 30 (that is, the front side of the housing 21) toward the other side. At this time, when the mosquito 11 is mixed in the air sucked from the third opening 23, the mosquito 11 is sucked into the inside of the housing 21 along the direction in which the air flow flows.

Here, an insect net 29 is provided so as to intersect the direction of the air flow in the wind tunnel slightly inside from the third opening 23. The insect net 29 is a net having a mesh sufficiently fine for the body length of the mosquito 11, and is formed by knitting resin fibers or the like. Due to the presence of the insect net 29, the mosquito 11 mixed in the inhaled air is separated by the insect net 29 and stays outside the insect net 29, so that only the air is sucked into the housing 21.

Further, in such an insect net 29, a drug showing toxicity to mosquitoes is infiltrated into the gaps between the fibers, and the mosquito 11 that has been in contact with the insect net 29 for a certain period of time is killed by the effect of the drug. As the drug, for example, a pyrethroid-based chemical substance is used. Further, by forming the outer surface of the housing 21 with a light color such as white and forming the insect net 29 with a dark color such as black, the mosquito 11 is moved (guided) toward the darker insect net 29. Can be done.

Instead of the insect net 29, two electrode nets having a mesh smaller than the body length of the mosquito 11 and arranged at a distance shorter than the body length of the mosquito 11 may be used. When a DC voltage is applied between the two electrode nets, a short circuit occurs through the mosquito 11 when the mosquito 11 comes into contact with the two electrode nets, and the mosquito 11 is killed by electric killing.

The third opening 23, the fan 30, and the insect net 29 are examples of the suction unit 34 that sucks the air outside the housing 21 into the inside. The suction unit 34 is provided corresponding to the position of the third opening 23 on the front surface of the housing 21 described above. That is, the suction portion 34 is provided on the side surface of the rectangular parallelepiped housing 21. Since the suction unit 34 sucks the air outside the housing 21 into the inside of the housing 21, it is preferable that the suction unit 34 is provided on the side in order to avoid sucking dust. Further, even if the suction portion 34 is provided on the lower surface of the housing 21, the same effect can be obtained.

The carcass of the mosquito 11 killed by the agent of the insect net 29 falls in the direction of gravity as shown by the broken line arrow in FIG. 3B. A part of the wind tunnel has disappeared from the place where the mosquito 11 falls, and the mosquito 11 is housed in a storage portion 31 provided below the wind tunnel. In this way, a certain number of mosquitoes 11 separated and killed in the insect net 29 are housed in the storage section 31. Therefore, the user only needs to discard the contents of the storage unit 31 without the mosquitoes 11 killed by the pest catching device 100 being scattered around the pest catching device 100. In this way, the carcass of the mosquito 11 captured and killed by the pest capture device 100 can be easily removed. The accommodating portion 31 has, for example, a drawer shape that can be taken out from the front surface of the housing 21.

In order to inhale the mosquito 11 together with the air, the air flow generated by the fan 30 needs to exceed the flight ability of the mosquito 11. In other words, the mosquito 11 cannot be captured in the air flow in which the mosquito 11 can fly against the air flow. Therefore, the airflow generated by the fan 30 may have a wind speed of 2.0 m / s. Further, in order to further enhance the effect of catching the mosquito 11, the air flow generated by the fan 30 may have a wind speed of 2.5 to 3.5 m / s. In order to increase the wind speed of the airflow in this way, the passage cross-sectional area of the airflow at the third opening 23 may be reduced.

For example, the housing 21 may be designed so that the opening area of the third opening 23 is small, and the third opening 23 is covered with another member provided with an opening smaller than the third opening 23. The area may be reduced. It is also possible to increase the wind speed of the air flow by increasing the rotation speed or the size of the fan 30. In this case, since the maximum diameter of the fan 30 is restricted by the heat generated by the power source that rotates the fan 30 and the volume of the housing 21, the airflow required based on the pests to be captured and the capture efficiency can be formed. The configuration needs to be designed accordingly.

The air sucked from the outside of the housing 21 by the fan 30 is discharged from the first opening 25 while being turbulent due to the structure inside the housing 21. Such a first opening 25 is formed on the upper surface of the housing 21, and the air sucked in is discharged in a direction containing at least a vertical component. The upper surface on which the first opening 25 is formed may be the uppermost surface of the housing 21, or may be a bottom surface recessed due to the step structure. As the first opening 25 is formed at a higher position of the housing 21, air containing an attractant can be discharged from a higher position. Therefore, it is preferable that the first opening 25 is formed at the uppermost position of the upper surface of the housing 21 that can be designed.

Further, by forming the first opening 25 on the upper surface of the housing 21 in this way, an opening penetrating the housing 21 is substantially formed in a direction intersecting the upper surface. That is, the air discharged from the first opening 25 is discharged in the direction intersecting the upper surface. Assuming that the pest capture device 100 is installed in a substantially correct posture, the upper surface is substantially parallel to the horizontal plane. Therefore, the air discharged in the direction intersecting the upper surface reaches a higher position in the indoor space in the direction containing at least the vertically upward component. Most of the chemical substances used as attractants containing lactic acid used in the present embodiment have a higher specific gravity than air, and glide horizontally from a higher position in the indoor space while lowering the altitude to form the indoor space. More widely sprayed.

By providing the first opening 25 on the upper surface of the housing 21 in this way, it is possible to spray the attractant while lowering the altitude from a higher position. Therefore, the pest capture device 100 passes over furniture such as dining tables, desks, and beds arranged in the indoor space, and objects that may be obstacles such as home appliances, and sprays the attractant more widely. it can. That is, according to the pest capture device 100, it is possible to avoid a situation in which the attractant does not sufficiently spread in the indoor space due to the presence of an object, and the sufficiently widespread attractant more effectively attracts pests such as mosquitoes 11. It becomes possible to capture.

At this time, assuming that the floor area of the indoor space is 6.0 to 40 tatami mats (about 9.9 to 66 m ² ), if the wind speed of the released air is 1.0 to 4.0 m / s, it will be in the space. A sufficient concentration of lactic acid can be sprayed. As for such wind speed conditions, essential wind speeds and optimum wind speeds are appropriately set based on various conditions such as the type of chemical substance used as an attractant and the shape of the indoor space.

Further, as described above, the first opening 25 and the third opening 23 are provided at different positions such as the upper surface and the front surface of the housing 21. This is set to reduce the interference between the airflow of the released air and the airflow of the inhaled air and to disperse the required concentration of lactic acid into the indoor space. However, when a laminar flow can be formed by the internal configuration of the fan 30 and the housing 21, or when a circulation system is formed in which a part of the released air is sucked together with the sucked air, the air can be formed from the same surface. Inhalation and release may be preferred.

The attractant lactic acid used in the present embodiment contains D-form and L-form enantiomers, and any lactic acid used has an attractive effect on mosquitoes 11. However, more preferably, a higher attractive effect can be realized by using L-lactic acid (L-lactic acid). Hereinafter, when simply referred to as "lactic acid", lactic acid is a concept including any of L-form lactic acid, D-form lactic acid, or (racemic) lactic acid in which L-form and D-form are mixed. It is explained as.

Lactic acid has a high boiling point of about 120 ° C., and in the environment where the pest catching device 100 is used, most of it is liquid or solid, and some of it changes its state to gas slightly. Such a slight concentration of lactic acid whose state has changed to a gas is difficult to detect by the sense of smell of the person 13, and even when used as an attractant, the discomfort felt by the odor of lactic acid is reduced. In addition, since it is a component originally present in the living body, it can be said that a slight concentration of lactic acid whose state has changed to a gas is harmless to the human body. In other words, lactic acid has the advantage of not causing the adverse health effects seen in the case of spraying pesticides. On the other hand, the slight concentration of lactic acid whose state has changed to gas is sufficient to be detected by the antennae of the mosquito 11. For this reason, when mosquitoes 11 are captured as pests, lactic acid as an attractant is suitable.

As shown in FIGS. 3A and 3B, the first opening 25 is further provided with an adjusting function unit 27 that adjusts the direction in which air is discharged in a predetermined direction. Specifically, the adjusting function unit 27 is a plate-shaped member having a plate surface intersecting the opening surface of the first opening 25. A plurality of such plate-shaped members are arranged so that the plate surfaces are parallel to each other. The direction in which the airflow passing through the first opening 25 is adjusted to a predetermined direction by the plurality of plate-shaped members arranged in this way.

Note that some of the plurality of plate-shaped members do not have to be parallel to the other plate-shaped members. As a result, a part of the airflow passing through the first opening 25 is adjusted in the discharge direction to a predetermined first direction, and the other airflow passing through the first opening 25 is discharged in a predetermined direction. Adjusted in two directions. That is, the predetermined direction does not have to be one direction, and may include a plurality of directions.

Further, the adjustment function unit 27 may be provided with a wind speed adjustment mechanism (not shown) such as a diaphragm. By adjusting the direction in which the air is released and the wind speed by the adjusting function unit 27 in this way, the pest trapping device 100 becomes the shape and obstacle of the indoor space regardless of the arrangement in the indoor space. The attractant can be sprayed to suit the placement of the object to be obtained.

The attractant for the gas contained in the air and released from the first opening 25 is stored in a liquid state in the container portion 32 arranged inside the housing 21. The container portion 32 is a container having an open top, which is made of a material having resistance to an attractant to be contained. By using such a container, a liquid attractant can be contained. As an attractant, an attractant pressed into a cylinder or the like at a liquefying pressure may be used. Further, in this case, by arranging the cylinder outside the housing 21 and introducing the attractant in the cylinder into the housing 21 using a flow path such as a tube, the attractant whose state has changed to gas is continuously introduced. It may be a configuration to supply.

In this embodiment, since liquid lactic acid is used as an attractant, the container portion 32 as shown in FIG. 3B is used. Further, the container portion 32 is arranged vertically below the suction portion 34. As a result, the air corresponding to the attractant contained in the container portion 32 wraps vertically downward except for the air flow that is taken in from the suction portion 34 and heads to the first opening 25 on the upper surface in a relatively short distance. Later, it becomes the air of the airflow heading to the first opening 25 for a relatively long distance. The wind speed of the air flowing over such a long distance is suppressed.

When liquid lactic acid is used as an attractant, there are two methods of vaporizing lactic acid, natural vaporization and forced vaporization, both of which are effective for obtaining gaseous lactic acid. Natural vaporization is natural evaporation in response to the vapor pressure curve of lactic acid. In addition, forced vaporization refers to a method of vaporizing lactic acid into an aerosol. That is, gaseous lactic acid is a concept that includes both lactic acid whose state has changed to gas and lactic acid which is refined and contained in air as an aerosol. In the present disclosure, any of the gaseous lactic acids will be effective as long as they are contained in the inhaled air and released. Therefore, according to the present disclosure, a pest catching device having the same effect can be realized if a gaseous attractant can be generated in the air by using techniques such as natural vaporization and forced vaporization.

When exposed to air with a high wind speed, the aerosol described above is generated due to forced vaporization due to rippling. Aerosols generally have a large particle size, and even if they are contained in air, they fall over a short distance. In order to disperse lactic acid farther, it is necessary to release air containing lactic acid whose state has changed to gas, so air with a reduced wind speed is applied to release air containing a large amount of gas components. That is valid.

Although not shown, an opening is provided on the back surface (the innermost surface embedded in the wall 201) facing the front surface of the housing 21 in which the third opening 23 is formed, and the opening is provided through the wall 201. By exhausting air to the outside of the building 200, the wind speed of the air corresponding to lactic acid may be suppressed. In this way, the housing 21 may be provided with a predetermined opening to arbitrarily control the wind speed.

Further, as another example, as shown in FIG. 3C, the pest capture device 100 may include a second opening 37 different from the first opening 25. The second opening 37 is provided at a position different from that of the first opening 25, and is an opening through which air containing lactic acid is released. In FIG. 3C, the second opening 37 is provided on the side surface of the housing 21. The second opening 37 may be provided on the other side surface and the lower surface of the housing 21. That is, the number of the second openings 37 may be plural. Further, the second opening 37 is provided with an adjusting function unit 39 as in the case of the first opening 25. Since the adjustment function unit 39 is the same as the adjustment function unit 27, the description thereof will be omitted.

By providing the second opening 37 in this way, the wind speed of the air inside the housing 21 can be adjusted, and the sucked air can be circulated in the indoor space without being discharged to the outside of the building 200. .. As a result, air containing lactic acid is not lost to the outside of the building 200, so that the utilization efficiency of lactic acid is improved.

Returning to FIG. 3B, the sponge-like volatilization promoting member 36 for expanding the surface area of lactic acid while suppressing the generation of aerosol (that is, suppressing the rippling of liquid lactic acid) is immersed in the lactic acid of the container portion 32. Has been done. Further, in order to further promote the volatilization of lactic acid, a heater 38 that heats the container portion 32 and heats the liquid lactic acid may be provided. The heater 38 generates heat at a temperature corresponding to the electric power supplied from the power source 40, and heats lactic acid by transferring heat through the container portion 32. Therefore, the container portion 32 is preferably formed of a material having high thermal conductivity, for example, a synthetic material such as carbon nanotube or silicon resin having extremely high thermal conductivity as compared with a heat insulating material such as air, diamond or the like. It is formed using a mineral material or a metal material such as copper.

Heating of lactic acid through the container portion 32 may be performed only in a high humidity environment in which the state change of lactic acid into a gas is suppressed, for example. Therefore, as shown in FIG. 3A, the pest catching device 100 may be provided with a humidity measuring unit 33 such as a humidity sensor on the outer surface of the housing 21. For example, when the humidity of the indoor space measured by the humidity measuring unit 33 is equal to or higher than a predetermined humidity, the heater 38 may heat the lactic acid. By configuring the periphery of the container portion 32 in this way, the lactic acid contained in the container portion 32 changes to a gas state, and the lactic acid gas 41b is generated in the housing 21.

Further, the pest catching device 100 is used to suppress the bite of the person 13 by the mosquito 11. That is, the operation of the pest catching device 100 may be stopped when the person 13 does not exist in the indoor space. In this case, for example, in the pest capture device 100, a motion sensor 35 may be installed on the outer surface of the housing 21 as shown in FIG. 3A. The pest catching device 100 may operate only when the human sensor 35 receives the detection information indicating that the person 13 is present in the detection area within a predetermined distance range from the pest catching device 100. Further, the pest catching device 100 may be stopped in operation while such detection information is not received.

[motion]
When the operation of the pest catching device 100 in the present embodiment is started, the fan 30 starts rotating and an air flow is generated. Due to the generated airflow, the air outside the housing 21 is sucked into the inside of the housing 21 through the third opening 23 provided on the front surface of the housing 21. Further, the sucked air goes to the first opening 25 provided on the upper surface of the housing 21 while containing the lactic acid gas 41b whose state has changed to a gas inside the housing 21. When air containing lactic acid is discharged from the first opening 25, the wind speed and direction of the air are adjusted by the adjusting function unit 27. In this way, the air containing lactic acid spreads throughout the indoor space. The lactic acid gas 41b mixes with the air originally existing in the indoor space, and forms a concentration gradient in which the concentration becomes thinner as the relative distance from the pest catching device 100 increases.

The mosquito 11 existing in the indoor space moves toward a higher concentration of lactic acid gas 41b according to the concentration gradient formed as described above. That is, the mosquito 11 moves toward the pest catching device 100. Further, when the relative distance between the mosquito 11 and the pest catching device 100 becomes close, the mosquito 11 moves toward the insect net 29 having a relatively dark color.

When the relative distance between the mosquito 11 and the pest catching device 100 is sufficiently close, the mosquito 11 is caught in the air suction airflow and is sucked into the housing 21 together with the air from the third opening 23. The air passes through the insect net 29 and is released again from the first opening 25. On the other hand, the mosquito 11 is separated by the insect net 29 and killed by the agent of the insect net 29. The killed mosquito 11 falls into the containment section 31 according to the direction of gravity. By repeating such an operation, most of the mosquitoes 11 in the indoor space are captured.

As an example, pests so that the height of the upper surface where the first opening 25 is formed on the wall 201 of the indoor space having a ceiling height of 2.5 m and ^{a floor area of 6 tatami mats (about 9.9 m 2) is 1.5 m.} The capture device 100 was installed, and the experiment was conducted under predetermined conditions. A single bed was placed in the indoor space as an object that could be an obstacle.

Under the above-mentioned predetermined conditions, the wind speed of the air flow of the sucked air was 2.5 m / s, and the wind speed of the air blown out from the first opening 25 was 2.2 m / s. Further, the direction of air discharge from the first opening 25 is designed to be the vertical direction.

It should be noted that the air is released in a wider range of the lactic acid gas 41b by avoiding obstacles arranged in the indoor space as long as the air is discharged upward including at least the components in the vertical direction even if it is not in the vertical direction. The effect of spraying on is obtained. For example, when the pest trap 100 is installed at a height of half the ceiling height, air is released in the vertical direction and the height is about two-thirds of the ceiling height (for example, the ceiling height is 2.5 m). When it is installed at a height of 1.7 m from the floor surface at the time of the above, air may be discharged in a direction forming an angle of 30 to 60 degrees with the horizontal plane.

As a model of

mosquito

11, 100 Aedes aegypti, which transmit dengue fever, etc., were released into the above indoor space, the operation of the pest capture device 100 was started, and the number of Aedes aegypti captured after 3 hours was counted. As a result, more than 80 Aedes aegypti were captured and the capture rate was as high as 80% or more. At this time, the concentration of lactic acid gas 41b in the indoor space was about 300 ppb, and the olfactory sensation of the person 13 could not detect the odor of lactic acid. As described above, the pest catching device 100 of the present embodiment can efficiently catch the mosquito 11 with a high catching rate without giving a sense of discomfort to the person 13 even in an indoor space where an object that can be an obstacle exists. Shown.

[Effects, etc.]
As described above, the pest trapping device 100 according to the embodiment of the present disclosure is arranged inside the housing 21, the suction unit 34 that sucks the air outside the housing 21, and the housing 21. A container portion 32 for accommodating an attractant for attracting pests is provided, and the housing 21 is provided on the upper surface of the housing 21 and is the air sucked by the suction unit 34, which changes into a gaseous state. It has a first opening 25 through which air containing the attractant has been released.

Such a pest catching device 100 releases the air sucked by the suction unit 34 from the upper surface of the housing 21 in a state of containing an attractant. The air containing the attractant released from the upper surface spreads horizontally in the space while lowering the altitude from a high position. At this time, the attractant can be avoided by passing over an object that can be an obstacle such as a height, so that the attractant is sprayed more widely. Therefore, a sufficient amount of the attractant is sprayed in the space, and the pests can be attracted and captured more effectively.

Further, for example, the container portion 32 may be arranged vertically below the suction portion 34.

According to this, when using a liquid attractant, unnecessary waviness can be suppressed and aerosol generation can be suppressed. Therefore, since the air containing a large amount of the attractant whose state has changed to gas can be released, the attractant can be sprayed more effectively and the pests can be effectively captured.

Further, for example, the suction portion 34 may be provided on a side surface portion located on the side of the outer surface of the housing 21.

According to this, it is possible to prevent dust and the like from being mixed in the air sucked from the suction unit 34. Since it is possible to stably operate a place where a problem may occur due to the mixing of dust such as a fan 30, the maintenance frequency of the pest catching device 100 can be reduced. Therefore, the ease of use of the pest catching device 100 is improved.

Further, for example, the housing 21 may have a second opening 37 which is provided at a position different from the first opening 25 and where air containing an attractant is discharged.

According to this, the wind speed of the air inside the housing 21 can be adjusted without losing the air containing the attractant. The regulated wind speed can form air containing an attractant that is applied more efficiently. Therefore, more efficient pest capture by spraying the attractant is realized.

Further, for example, the suction unit 34 may suck air from the third opening 23, which is different from the first opening 25.

According to this, it is not necessary to perform alternating operation of inhalation and release by sharing one opening. That is, inhalation and release can be continuously operated. Therefore, since there is no timing when the inhalation is not performed and the timing when the release is not performed, the attractant can be efficiently released and the pests can be captured.

Further, for example, an insect net 29 for separating pests mixed in the air sucked by the suction unit 34 may be provided.

According to this, since it is possible to stably operate the parts where problems may occur due to the mixing of pests such as the fan 30, the maintenance frequency of the pest catching device 100 can be reduced. Therefore, the ease of use of the pest catching device 100 is improved.

Further, for example, the insect net 29 may contain a material infiltrated with a drug that is toxic to pests.

According to this, the captured pests can be killed at the same time, the trouble of separately killing the insects is omitted, and the user of the pest catching device 100 only needs to perform the operation of starting the operation of the device. Therefore, the ease of use of the pest catching device 100 is improved.

Further, for example, a storage unit 31 for accommodating the pests separated in the insect net 29 may be further provided.

According to this, since the captured pests are stored in the storage unit 31, the user of the pest capture device 100 only needs to perform the operation of discarding the contents of the storage unit 31. Therefore, the ease of use of the pest catching device 100 is improved.

Further, for example, an adjustment function unit 27 that adjusts the direction in which the air containing the attractant is released may be provided in a predetermined direction.

According to this, even if the pest catching device 100 is installed at any place in the indoor space, air containing an attractant can be discharged from the place in a predetermined direction. That is, the restrictions on the location where the pest catching device 100 is installed are reduced. Therefore, the ease of use of the pest catching device 100 is improved.

Also, for example, the attractant may be lactic acid.

According to this, the mosquito 11 can be captured as a pest by using the pest capture device 100.

Further, the building 200 in the present disclosure includes a wall 201 in which the pest catching device 100 described in any of the above is installed so that the first opening 25 is located at a position higher than half of the ceiling height.

According to this, air containing an attractant can be released from a position higher than many objects that can be obstacles in spraying the attractant, such as furniture and home appliances. Therefore, the attractant can be sprayed over a wider area, and pests can be captured more effectively.

(Other embodiments)
Although the embodiments have been described above, the present disclosure is not limited to the above embodiments.

In addition, it is realized by applying various modifications to each embodiment that can be conceived by those skilled in the art, or by arbitrarily combining the components and functions of each embodiment without departing from the spirit of the present disclosure. Also included in this disclosure.

For example, in the embodiment, the pest catching device is installed with half of the housing embedded in the wall, but the front surface may be substantially flush with the wall surface. In this case, the shape may be such that a part of the wall is recessed so that a part of the upper surface of the housing in which the first opening is formed is exposed to the indoor space. Further, a duct may be formed in which a part of the upper surface of the housing in which the first opening is formed and the indoor space are communicated with each other. By making them substantially flush with each other in this way, the design can be improved, the portion of the housing that occupies the indoor space can be minimized, and the indoor space can be effectively utilized.

Further, for example, the adjusting function unit and the insect net described in the above embodiment are not essential, and an opening for releasing air containing an attractant may be formed on the upper surface. Therefore, the arrangement of the container portion is not limited to the position described in the above embodiment, and may be arranged immediately before the first opening, for example.

Further, for example, the third opening may be integrated with the first opening, and one opening formed on the upper surface of the housing may be shared to perform an alternate operation in which air is taken in and out alternately.

Further, the general or specific aspects of the present disclosure may be realized by a recording medium such as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable CD-ROM. Further, it may be realized by any combination of a system, an apparatus, a method, an integrated circuit, a computer program and a recording medium.

21 Housing 23 3rd opening 25

1st opening

27, 39 Adjustment function part 29 Insect net 31 Storage part 32 Container part 34 Inhalation part 37 2nd opening 100 Pest catching device 200 Building 201 Wall

Claims

With the housing
A suction unit that sucks in air from the outside of the housing and
A container portion that is arranged inside the housing and contains an attractant for attracting pests is provided.
The housing is a pest catching device provided on the upper surface of the housing and having a first opening at which air sucked in the suction portion and containing the gas-changed attractant is released.
The pest catching device according to claim 1, wherein the container portion is arranged vertically below the suction portion.
The pest catching device according to claim 1 or 2, wherein the suction portion is provided on a side surface portion located on the side of the outer surface of the housing.
The pest catching device according to any one of claims 1 to 3, wherein the housing is provided at a position different from the first opening and has a second opening from which air containing the attractant is released.
The pest catching device according to claim 4, wherein the suction unit sucks the air from the first opening and a third opening different from the second opening.
The pest catching device according to any one of claims 1 to 5, further comprising a catching net for separating the pests mixed in the air sucked in the suction unit.
The pest catching device according to claim 6, wherein the pest net contains a material infiltrated with a drug toxic to the pest.
The pest catching device according to claim 6 or 7, further comprising a storage portion for accommodating the pests separated in the pest net.
The pest catching device according to any one of claims 1 to 8, further comprising an adjusting function unit that adjusts the direction in which air containing the attractant is released in a predetermined direction.
The pest catching device according to any one of claims 1 to 9, wherein the attractant is lactic acid.
A building provided with a wall on which the pest catching device according to any one of claims 1 to 10 is installed so that the first opening is located at a position higher than half the ceiling height.