Mosquito breeding suppression device

Abstract

To provide a mosquito breeding suppression device that can control mosquito reproduction. [Solution] The mosquito breeding suppression device of the present invention comprises a support part 2 that is provided to rise from a point where a puddle is assumed to be present, a container part 4 attached to the support part and capable of storing oil inside, a bottle 6 in which oil is stored inside, and a bottle support part 8 that supports the bottle when the bottle is inverted, such that the mouth of the bottle is located below the upper edge of the container part.

Description

Technical Field

[0001] The present invention relates to a mosquito breeding suppression device.

Background Art

[0002] Preventing the spread of infectious diseases transmitted by mosquitoes, such as malaria and dengue fever, is a very important issue. To reduce infectious diseases transmitted by mosquitoes, a method called Larval Source Management (hereinafter referred to as "LSM") has been proposed. LSM is a method of reducing the number of mosquito larvae by spraying pesticides or the like on water areas that are breeding grounds for mosquito larvae. LSM may be implemented as a national project in African countries as a measure against infectious diseases. For example, as shown in Patent Document 1, it is known to control mosquitoes by spreading pesticides in puddles.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, LSM has a problem that its spread has not advanced for the following reasons. The first problem is that it requires labor and time because workers search for puddles on foot from the ground. After rain falls on a vast area, a large number of puddles are formed simultaneously. Also, eggs exist on the dry ground surface, and they turn into larvae from the eggs within 2 to 3 days after the puddles are formed, and become adults through the pupal state called a wriggler within several days to one week. After rain forms puddles, it is necessary to quickly spray pesticides or the like. However, since workers search for puddles on foot, there is a problem that there is a shortage of workers and the work cannot be completed in time.

[0005] The second problem is that, traditionally, when performing LSM (Landing Street Management), workers spray insecticides on all puddles. Spraying insecticides on puddles over a wide area requires a large number of workers. Furthermore, spraying insecticides on all puddles results in a large amount of insecticide being used, increasing the cost of purchasing insecticides, and raising concerns about the environmental burden due to the large amount of insecticide used. In addition, spraying large amounts of insecticides results in the components remaining in the environment for a long period of time, affecting not only mosquito larvae but also surrounding organisms, and considering the living environment in a malaria-prone area, it could be a factor in causing health problems for humans.

[0006] This invention was made to solve these problems and aims to provide a mosquito breeding suppression device that can suppress mosquito reproduction. [Means for solving the problem]

[0007] To achieve the above objective, according to one embodiment of the present invention, a mosquito breeding suppression device for suppressing mosquito breeding comprises: a support part provided to rise from a point where a puddle is assumed to be present; a container part attached to the support part and capable of storing oil inside; a bottle containing oil inside; and a bottle support part that supports the bottle when the bottle is inverted, such that the mouth of the bottle is located below the upper edge of the container part. According to one embodiment of this technology configured as described above, when it rains, the oil inside the container flows into the puddle, forming an oil film on the surface of the puddle. This inhibits the growth of mosquito larvae that have formed in the puddle or suffocates them, thereby reducing the number of larvae. Thus, mosquito reproduction can be suppressed. Furthermore, for example, if the mosquito reproduction suppression device is installed at a point where a puddle is expected to form and can be activated when it rains, the possibility that disinfectant will not be sprayed onto the puddle in time before the mosquitoes become adults can be reduced, making it easier to reduce the number of larvae. Also, for example, after the oil flows out of the container during rainfall, when the water evaporates from the container due to sunlight, oil is refilled into the container from the bottle. As a result, when it rains again, the oil inside the container flows into the puddle, forming an oil film on the surface of the puddle, and suppressing mosquito reproduction. [Effects of the Invention]

[0008] The mosquito breeding suppression device of the present invention can suppress the reproduction of mosquitoes. [Brief explanation of the drawing]

[0009] [Figure 1] This figure shows how a mosquito breeding suppression device according to one embodiment of the present invention is placed on a point where puddles are assumed to be present. [Figure 2] This figure shows how a puddle of water has formed below the mosquito breeding suppression device according to one embodiment of the present invention. [Figure 3] This figure shows the state in which the preparation steps for a mosquito breeding suppression device according to one embodiment of the present invention are being carried out. [Figure 4] This figure shows the state in which the oil supply step of a mosquito breeding suppression device according to one embodiment of the present invention is being performed. [Figure 5] This figure shows how water evaporates during the refill step of a mosquito breeding suppression device according to one embodiment of the present invention. [Figure 6] This figure shows the state after oil has been resupplied to the container during the refill step of a mosquito breeding suppression device according to one embodiment of the present invention. [Figure 7] This is a flowchart showing the operation method of a mosquito breeding suppression device according to one embodiment of the present invention. [Figure 8] This figure shows a state in which an oil film has formed in the water puddle below the mosquito breeding suppression device according to one embodiment of the present invention. [Modes for carrying out the invention]

[0010] Hereinafter, a mosquito breeding suppression device according to one embodiment of the present invention will be described with reference to the attached drawings. The embodiments described herein are illustrative and will be apparent to those skilled in the art that many modifications, changes, and substitutions are possible within the spirit and scope of the present invention. Accordingly, the present invention is not limited to the embodiments disclosed, and various modifications, changes, etc., are possible in its form and details without departing from the claims. Furthermore, the components disclosed in the specification can be freely combined.

[0011] One embodiment of the present invention provides a mosquito breeding suppression device 1 that inhibits the growth of mosquito larvae that develop in puddles, reduces or kills mosquito larvae, and suppresses mosquito breeding.

[0012] As shown in Figures 1 and 2, the mosquito breeding suppression device 1 according to one embodiment of the present invention is installed at a point where a puddle C (see Figure 1) is expected to form, where there is a high probability that mosquitoes will breed (be present) and live. The mosquito breeding suppression device 1 allows oil from the container described below to flow into the puddle during rainfall, forming an oil film M (see Figure 8) on the surface of the puddle. This inhibits the growth of mosquito larvae that have formed in the puddle or suffocates them, thereby reducing the number of larvae. Thus, mosquito breeding can be suppressed. Furthermore, after the oil flows out of the container during rainfall, when the water evaporates from the container due to sunlight, oil is refilled into the container from the bottle. This allows the oil from the container to flow into the puddle again during rainfall, forming an oil film on the surface of the puddle. In this way, oil is automatically refilled into the container and an oil film is formed on the surface of the puddle without human intervention.

[0013] Figure 2 shows an example of a puddle C in which mosquito eggs E and larvae D that hatch from eggs E are present in the water. The water surface Ca of puddle C is indicated by a dashed line. Puddle C is formed when rainwater collects in depressions in the ground G. As shown in Figure 1, at puddle prediction points B where puddle C is expected to form, Anopheles mosquitoes lay their eggs on grass, sand, stones, etc., and the eggs remain alive even if dry conditions persist for nearly nine months. When it rains and puddles form, these eggs E hatch, and mosquito larvae D swim out into the puddles and grow. Mosquito larvae D are born from eggs E in puddle C. Larvae D are what are commonly known as wrigglers. Larvae D develop from eggs E in about 2-3 days after it rains and puddle C is formed, for example. Anopheles mosquito eggs E can withstand 9 months of drought and, even after a long dry season, are known to hatch after rainfall creates puddles, developing from mosquito larvae into adults. The larvae D grow in puddles C for about a few days to about a week, becoming adult mosquitoes F. The mosquito is, for example, an Anopheles mosquito. Mosquitoes feed on human blood, and Anopheles mosquitoes, for example, transmit malaria. Other types of mosquitoes, depending on the species, transmit infectious diseases such as dengue fever, Japanese encephalitis, West Nile fever, and Zika virus infection. In this embodiment, Anopheles mosquitoes are used as an example, but this technology can be applied to other types of mosquitoes as long as they develop as larvae in puddles C. The mosquito breeding suppression device 1 can suppress mosquito breeding, and therefore is also a mosquito-borne infectious disease suppression device.

[0014] Puddle C is, for example, a puddle that forms on the ground G after rain. It is formed when water accumulates in uneven or sloping areas of the ground G. The size of puddle C is not limited. Puddle C may be a puddle after rain, a puddle formed when water accumulates in a depression in an object, a puddle formed when water seeps out, a pond, a swamp, a reservoir, a rice paddy, water in a depression, water in an irrigation ditch, a lake, etc. Puddle C may include, for example, a puddle of 30 cm x 30 cm or a puddle of 200 cm x 200 cm. Puddle C includes not only those that form for a short period after rain, but also those that exist for a long period due to the influence of weather and climate. Depending on the target species of mosquito, puddle C may not include places with constant water flow, or lakes or relatively large ponds (for example, ponds of the size of 100 m x 100 m) where larvae D, which are predators of mosquito larvae, are less likely to grow. Anopheles mosquitoes prefer to breed in relatively small puddles C, so puddles C may be defined as relatively small puddles smaller than 500cm x 500cm. Depending on the topography of the ground G, puddles will form in the predicted puddle area B after rainfall over a vast area. For example, over a vast area, a large number of puddles C may form after a single rainfall, for example, about 1,000 to 10,000. Such relatively small puddles C are numerous, and even if workers try to spray insecticide, they may not be able to do so in time before the mosquito larvae develop into adults.

[0015] As shown in Figure 2, the mosquito breeding suppression device 1 comprises a support part 2, a container part 4, a bottle 6, and a bottle support part 8.

[0016] The support portion 2 is provided so as to rise from the assumed water pooling point B. The assumed water pooling point B is assumed as a place where water pooling is assumed to occur on the ground G after rain. For example, it is a place in a depression or recess formed on the ground. Alternatively, any depression or the like where water pooling is likely to occur may be used as the assumed water pooling point. The support portion 2 is formed so as to rise upward from the ground G. The support portion 2 is formed by, for example, a rod-shaped support column. The support portion 2 may form a pile with a pointed lower end facing downward. The support portion 2 is formed by, for example, a wooden rod having a square cross section. The support portion 2 extends to a height within the range of 10 cm to 50 cm from the ground. The support portion 2 is connected to the bottom of the container portion 4. The support portion 2 supports the container portion 4 above the assumed water pooling area.

[0017] As shown in Figure 2, the container portion 4 is attached to the support portion 2 and is formed to hold oil inside. The container portion 4 is formed, for example, as a circular dish. The container portion 4 is formed so that the portion inside the outer edge portion 4a is recessed downwards. The bottom surface 4b of the container portion 4 is formed to be relatively flat. The bottom surface 4b of the container portion 4 is located below the outer edge portion 4a of the container portion 4. The outer edge portion 4a of the container portion 4 is formed to be at approximately the same height around its entire circumference. The container portion 4 is formed, for example, as a dish with a flat bottom surface 4b. The container portion 4 may be formed in any shape. For example, the container portion 4 may be formed as a hemispherical bowl portion. The diameter of the container portion 4 is, for example, in the range of 5 cm to 20 cm. The depth from the outer edge portion 4a to the bottom surface 4b of the container portion 4 is, for example, in the range of 1 cm to 5 cm. The container portion 4 is formed from, for example, resin. The container part 4 is fixed to the support part 2 at its bottom part 4d. The container part 4 is supported in a substantially horizontal position. In its initial state, the container part 4 is filled with oil 12 from the inner bottom surface 4b to the outer edge 4a. The oil 12 is composed of, for example, vegetable oil. The oil is composed of, for example, edible oil, such as corn oil. If the oil 12 is vegetable oil, the oil film M will decompose in a few weeks and will have little impact on nature. The oil may be composed of any oil. For example, the oil may be composed of mineral oil. The bottom surface 4b of the container part 4 is formed black. This makes it easier for sunlight to be absorbed by the inner surface of the container part 4. Therefore, after rainfall, when rainwater is stored inside the container part 4, sunlight is absorbed by the inner surface of the container part 4, making it easier for the rainwater inside the container part 4 to evaporate.

[0018] The container portion 4 is provided with a hanging portion 4c that hangs downward from the outer part of the outer edge portion 4a of the container portion 4. The hanging portion 4c forms a projection that slightly protrudes outward and downward from the outer side surface of the container portion 4. With this configuration, a small amount of oil 12 can drip directly from the hanging portion 4c into the water puddle below, and if the oil 12 were to flow from the outer edge portion 4a to the outer surface of the container portion 4 and down along the support portion, it would be prevented from reaching the water puddle.

[0019] As a modification, the container portion 4 may include a first bottom surface provided below the bottle 6 and a second bottom surface provided outside and below the bottle 6 and at a position higher than the first bottom surface. For example, the container portion 4 can be formed into something like a dish or a bowl portion with a deeper center. By forming the bottom surface of the container portion 4 at the lower part of the bottle 6 to be slightly deeper, the allowable degree of displacement when the arrangement position of the mouth portion 6a of the bottle 6 is displaced can be increased, and compared with the case where the entire bottom surface is the first bottom surface, the liquid above the second bottom surface can be reduced, and the overall oil usage cost can be suppressed.

[0020] The bottle 6 is formed so that oil is stored inside. The bottle 6 forms a cylindrical container. In the normal posture with the mouth portion 6a facing upward, the bottle 6 forms a storage container with a circular opening at the upper mouth portion. The bottle 6 is formed by, for example, a medicine bottle. The bottle 6 is formed circular in top view. The diameter of the bottle 6 is, for example, a value within the range of 1 cm to 10 cm. The bottle 6 has, for example, a value within the range of 5 mL to 1000 mL, also, for example, a value within the range of 10 mL to 600 mL, and also, for example, a value within the range of 10 mL to 200 mL. The bottle 6 is formed by, for example, glass. Note that the bottle 6 may be formed of any material. For example, the bottle 6 may be formed of resin. The bottle 6 is held by the bottle support portion 8 in an upside-down state with the mouth portion 6a facing downward. The central axis X1 of the bottle 6 extends substantially in the vertical direction. The mouth portion of the bottle 6 is located above the bottom surface 4b of the container portion 4 and below the surface of the oil in the container portion 4. The mouth portion of the bottle 6 is arranged in a state of being submerged in the liquid oil in the container portion 4. Also, the mouth portion 6a of the bottle 6 is located below the outer edge portion 4a of the container portion 4. The mouth portion 6a of the bottle 6 is provided at a depth within the range of 5 mm to 20 mm from the outer edge portion 4a of the container portion 4. The mouth portion 6a of the bottle 6 is located inside the outer edge portion 4a of the container portion 4. The bottle 6 is in a state where oil fills from the bottle bottom 6b to the mouth portion 6a in the initial state. The bottle 6 is in an upside-down state in the initial state, but the oil 12 is in a state of being substantially filled. The oil 12 in the bottle 6 is the same oil as the oil 12 in the container portion 4. The oil 12 is composed of, for example, plant-derived oil or the like as described above.

[0021] The bottle support section 8 supports the bottle 6 so that, when the bottle 6 is inverted, the mouth of the bottle 6 is positioned below the upper edge 4a of the container section 4. The bottle support section 8 comprises a column 8a extending upward from inside the container section 4, and a mounting section 8b for attaching the bottle 6 to the column 8a when the bottle 6 is inverted. This configuration allows for relatively simple adjustment of the vertical position of the bottle 6. The columnar portion 8a of the bottle support portion 8 extends upward from the container portion 4. The columnar portion 8a extends vertically upward. The columnar portion 8a is formed, for example, from a cylindrical rod-shaped member. The base of the columnar portion 8a is fixed to the container portion 4. The mounting portion 8b is provided on the upper part of the column portion 8a. The mounting portion 8b extends laterally from the column portion 8a and is formed so that the bottle 6 can be attached. The mounting portion 8b is formed, for example, from a string-like member. The mounting portion 8b is formed so that the column portion 8a and the bottle 6 can be fastened together. The bottle support portion 8 may be configured to support the bottle 6 in any other form. As a variation, the bottle support portion 8 may include a base portion that is placed inside the container portion 4. For example, the base portion may have a circular opening with a diameter slightly smaller than the diameter of the bottle 6. The base portion also functions as a holder and can hold the bottle 6 upside down at a predetermined height from the bottom surface of the container portion 4. By placing the bottle 6 on the base portion, the bottle can be positioned in a predetermined position upside down, and the placement of the bottle to the predetermined position can be done relatively easily.

[0022] Next, as shown in Figure 7, a series of operations of the mosquito breeding suppression method related to the mosquito breeding suppression device 1 will be described. The mosquito breeding suppression method, for example, uses the mosquito breeding suppression device 1 to suppress mosquito breeding after rainfall. As shown in Figure 7, at the start, a mosquito breeding suppression method is initiated to control mosquito reproduction. In Figure 1, preparation step S1 is performed, in which a support part 2 is installed in a hypothetical puddle point B where the ground G is depressed, and a container part 4 and a bottle 6 are prepared on the support part 2. The lower part of the support part 2 is inserted into the ground below the hypothetical puddle point B, and the support part 2 is fixed to the ground. The support part 2 is formed to extend vertically from the ground. The container part 4 is provided almost horizontally on the upper part of the support part 2. The bottle support part 8 extends upward from the bottom surface 4b of the container part 4 (see Figure 2). The bottle 6 is fixed upside down by a mounting part 8b at the upper part of the bottle support part 8. The bottle 6 is almost full of oil 12. The container part 4 is filled with oil from the inner bottom surface 4b to the outer edge 4a. The bottle 6 is fixed to the bottle support part 8 such that the mouth part 6a of the bottle 6 is submerged in the oil liquid inside the container part 4. The inside of the bottle 6 and the inside of the container 4 are connected, allowing the oil 12 to move back and forth between them. The oil 12 does not flow out from the outer edge 4a of the container 4, but is stored inside the container 4 and the bottle 6. Once the preparation step S1 is completed, the process proceeds to the oil supply step S2.

[0023] In step S2, as shown in Figure 4, an oil supply step S2 is performed in which rainfall causes oil to overflow and supply oil from the puddle. Rainwater is illustrated in Figure 4, for example, by arrow W. When rainwater W flows into the container 4 due to rainfall, the oil 12 overflows beyond the outer edge 4a as shown by arrow F1 because oil 12 has a lower specific gravity than water. The oil 12 can drip into the puddle from, for example, the hanging part 4c. The oil 12 that overflows from the container 4 falls towards the assumed puddle point B below. At the assumed puddle point B, the rainwater W causes the recess to fill up from an empty state to the top of the recess, creating a puddle. The oil 12 that overflows from the container 4 flows into the puddle and forms a relatively wide oil film M on the surface of the puddle C. For example, one spoonful of oil spreads as an oil film over an area of ​​about 1 square meter. The oil 12 is diffused in puddle C, forming an oil film on the surface of the water in puddle C. For example, if an oil film M is formed on all or most of the surface of puddle C, even if mosquito eggs E hatch into larvae D in puddle C, the larvae D hatched in the water will suffer from oxygen deprivation, increasing the probability that they will suffocate and die. Also, for example, if an oil film M is formed on at least a portion of the surface of puddle C, the mosquito larvae D hatched in the water will suffer from oxygen deprivation in the area where the oil film M is formed, increasing the probability that they will die. Furthermore, for example, if an oil film is formed on about half of the surface of puddle C, the mosquito larvae hatched in the water will suffer from oxygen deprivation in the area where the oil film M is formed, increasing the probability that they will die. In this way, the possibility of inhibiting the growth of mosquito larvae D in puddle C or eliminating mosquito larvae D increases. This technology can reduce the number of mosquito larvae and suppress the emergence of adult mosquitoes. Furthermore, for example, in a vast area of ​​land that is normally dry, hundreds, thousands, or even tens of thousands of puddles may form after rainfall. In such cases, conventional methods of manually spraying pesticides onto puddles present a problem: the pesticide application to the puddles cannot keep up with the mosquito growth cycle (e.g., within a few days). However, with this technology, when it rains and puddles C are formed, by placing the mosquito breeding suppression device 1 at the expected puddle point B, which would otherwise be bare ground in dry weather, the likelihood of inhibiting or eliminating mosquito larvae D in puddles C increases. Thus, by pre-positioning the mosquito breeding suppression device 1 at the expected puddle location before rainfall, the device 1 can activate simultaneously with the rainfall, forming an oil film on the puddles. Once the oil supply step S2 is completed, the process proceeds to S3.

[0024] In step S3, a refill step S3 is performed in which oil is refilled as the water in the container 4 evaporates. As shown in Figure 5, when the rainfall ends, the container 4 is filled with water W and oil 12. Subsequently, when the weather improves and sunlight L hits the container 4, the container 4 is heated, and as shown by arrow F2, the water in the container 4 evaporates. At this time, the oil 12 in the container 4 does not evaporate. As the water in the container 4 evaporates and decreases, the oil in the bottle 6 flows out to the container 4. As shown in Figure 6, the container 4 is once again filled with oil 12 from the bottom to the outer edge 4a, and the outflow of oil from the bottle 6 to the container 4 stops. As a result, the container 4 is filled with oil from the inner bottom surface 4b to the outer edge 4a, just as it was before the rainfall. At this time, the amount of oil in the bottle 6 has decreased by the amount of oil supplied to the container 4. The lowered oil level of oil 12 in the bottle 6 is illustrated by the dashed line G in Figure 6. The oil supply step S2 and refill step S3 can be performed again during the next rainfall. Once the refill step S3 is completed, the movement of oil 12 stops, the process moves to the end, and the mosquito breeding suppression method is completed.

[0025] An example of one embodiment of the present invention may be provided in the following embodiments.

[0026] (1) A mosquito breeding suppression device for suppressing the reproduction of mosquitoes, comprising: a support part provided to rise from a point where a puddle is assumed to be present; a container part attached to the support part and having an oil reservoir inside; a bottle containing oil inside; and a bottle support part that supports the bottle when the bottle is inverted, such that the mouth of the bottle is located below the upper edge of the container part.

[0027] (2) The mosquito breeding suppression device according to (1), wherein the inner surface of the container is formed to be black.

[0028] (3) The mosquito breeding suppression device according to (1), wherein the bottle support portion 8 comprises a column portion extending upward from inside the container portion and a mounting portion for attaching the bottle to the column portion in an inverted state.

[0029] (4) The mosquito breeding suppression device according to (1), wherein the bottle support portion comprises a base portion placed inside the container portion.

[0030] (5) The mosquito breeding suppression device according to (1), wherein the capacity of the bottle is greater than the amount stored up to the outer edge of the container.

[0031] (6) The mosquito breeding suppression device according to (1), wherein the container portion is provided with a hanging portion that hangs downward from the outer part of the outer edge of the container portion.

[0032] (7) The mosquito breeding suppression device according to (1), wherein the container portion comprises a first bottom surface provided below the bottle and a second bottom surface provided on the outside and below the bottle and at a higher position than the first bottom surface.

[0033] The embodiments for carrying out the present invention are not limited to those described above, and further variations can be applied. Various alternative embodiments and examples will be apparent to those skilled in the art based on the disclosed technology.

[0034] As a variation, the support part 2 can be changed to another structure capable of supporting the container part 4. For example, the support part 2 may be composed of a four-legged base. Alternatively, for example, the support part 2 can be made of resin. Furthermore, for example, the support part 2, the container part 4, and the bottle support part 8 of the mosquito breeding suppression device 1 may be constructed as a single molded product made of resin. The support part 2, the container part 4, and the bottle support part 8 may also be constructed as a kit. With this configuration, the support part 2, the container part 4, the bottle 6, and the bottle support part 8 can be prepared in advance at the factory and sold as a set, and the user can prepare the mosquito breeding suppression device 1 relatively easily by adding oil. [Explanation of Symbols]

[0035] 1: Mosquito breeding control device 2: Support part 4: Vessel 4a: Outer edge 4b: Bottom 4c: Drooping part 6: Bottle 8:Bottle support part 8a: Pillar part 8b: Mounting part 12: Oil

Claims

1. A mosquito breeding suppression device that inhibits the reproduction of mosquitoes, A support section is installed to rise from the point where puddles are expected to form, A container portion attached to the support portion and having an oil reservoir inside, A bottle in which oil is stored inside, A mosquito breeding suppression device comprising: a bottle support part that supports the bottle when the bottle is inverted, such that the mouth of the bottle is located below the upper edge of the container part.

2. The mosquito breeding suppression device according to claim 1, wherein the inner surface of the container part is formed black.

3. The mosquito breeding suppression device according to claim 1, wherein the bottle support portion comprises a column portion extending upward from within the container portion and a mounting portion for attaching the bottle to the column portion in an inverted state.

4. The mosquito breeding suppression device according to claim 1, wherein the bottle support portion comprises a base portion placed inside the container portion.

5. The mosquito breeding suppression device according to claim 1, wherein the capacity of the bottle is greater than the amount stored up to the outer edge of the container.

6. The mosquito breeding suppression device according to claim 1, wherein the container portion is provided with a hanging portion that hangs downward from the outer part of the outer edge of the container portion.

7. The mosquito breeding suppression device according to claim 1, wherein the container portion comprises a first bottom surface provided below the bottle and a second bottom surface provided outside and below the bottle and at a higher position than the first bottom surface.

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