Cooling tool

Abstract

To provide a cooling tool capable of improving coldness of eyes and / or a part around the eyes of a wearer.SOLUTION: A cooling tool includes a body part covering at least the eyes and / or a part around the eyes of a wearer's face and a cooling body provided for the body part. The cooling body has a water retention layer retaining or capable of retaining water. The cooling body is arranged in the body part so that at least a part of it directly or indirectly touches the eyes and / or a part around the eyes of the wearer when worn. The cooling tool has an intervention sheet disposed between the eyes and / or the part around the eyes of the wearer and the water retention layer when worn, and an air permeable non-intervention sheet. The water retention layer is disposed between the intervention sheet and the non-intervention sheet. The cooling body has a humidity adjusting material disposed between the water retention layer and the non-intervention sheet. The humidity adjusting material is configured to absorb moisture from a surface on the water retention layer side and to volatilize the absorbed moisture from a surface of the non-intervention sheet side.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a cooling device. [Background technology]

[0002] Conventionally, cooling devices capable of cooling at least the eyes of a wearer's face have been known. For example, Patent Document 1 describes an eye mask in which a water-absorbing polymer is stored inside a bag-shaped eye mask body that is made up of a contact side sheet that contacts the wearer's eyes and the area around the eyes and a top side sheet that faces the contact side sheet.

[0003] In the eye mask described in Patent Document 1, the top sheet is made of a breathable material, so when the water absorbed in the water-absorbing polymer evaporates, the water vapor is released to the outside through the top sheet and heat is dissipated from the main body of the eye mask, thereby cooling the wearer's eyes and the area around the eyes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2002-028176 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, the eye mask described in Patent Document 1 cools the wearer's eyes and the area around the eyes by utilizing the evaporation of water absorbed in a water-absorbent polymer. However, while water-absorbent polymers have a high moisture retention capacity, they do not have an excellent ability to volatilize water. Therefore, although the eye mask can cool the wearer's eyes and the area around the eyes for a long period of time, the inventors have found that there is a problem in that the cooling effect is low.

[0006] The present invention relates to a cooling device capable of improving cooling to the wearer's eyes and / or the area around the eyes. [Means for solving the problem]

[0007] The cooling device of the present invention is a cooling device comprising a main body portion covering at least the eyes and / or the area around the eyes of the wearer's face, and a cooling body provided on the main body portion, wherein the cooling body has a water-retaining layer that holds or is capable of holding water, and the cooling body is arranged on the main body portion so that at least a portion of the cooling body is in direct or indirect contact with the wearer's eyes and / or the area around the eyes when worn, and the cooling device has an intervening sheet that is arranged between the wearer's eyes and / or the area around the eyes and the water-retaining layer when worn, and a non-intervening sheet having breathability, the water-retaining layer is arranged between the intervening sheet and the non-intervening sheet, and the cooling body has a humidity adjusting material that is arranged between the water-retaining layer and the non-intervening sheet, and the humidity adjusting material is configured to absorb moisture from the surface on the water-retaining layer side and volatilize the absorbed moisture from the surface on the non-intervening sheet side. Effect of the Invention

[0008] According to the cooling device of the present invention, it is possible to improve the cooling effect on the wearer's eyes and / or the area around the eyes. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a diagram showing a cooling device according to the present embodiment. [Diagram 2] FIG. 1 is a schematic cross-sectional view of a cooling device according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a diagram showing a cooling body according to the embodiment; [Figure 4] FIG. 4 is a schematic cross-sectional view taken along line II-II' in FIG. [Diagram 5] FIG. 5(a) is a diagram showing the ear hooks in a pulled state, and FIG. 5(b) is a diagram showing the ear hooks in a worn state. [Figure 6] FIG. 2 is a diagram showing a state in which the cooling device according to the embodiment is enclosed in a package. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. Note that the following embodiments do not limit the inventions according to the claims, and not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention. In addition, in the present embodiments, the scale and dimensions of each component may be exaggerated, and some components may be omitted.

[0011] [Overall configuration of cooling equipment] 1 and 2, the cooling device 1 according to this embodiment comprises a main body section 10 that covers at least the eyes and / or the area around the eyes of the wearer's face, a cooling body 20 provided on the main body section 10, and ear hook sections 30 provided on both ends in the width direction of the main body section 10. Note that Fig. 1 is a plan view of the main body section 10 in an unfolded state with the surface (outer surface) not near the wearer's eyes facing upward.

[0012] The cooling device 1 according to this embodiment also has an intervening sheet 2 that is placed between the wearer's eyes and / or the area around the eyes and a water-retaining layer 22 (described later) of the cooling body 20 when the cooling device 1 is worn, and a non-intervening sheet 3 that has breathability. This water-retaining layer 22 is placed between the intervening sheet 2 and the non-intervening sheet 3.

[0013] In this embodiment, the cooling tool 1 is stored in a state sealed in a waterproof packaging body 200 (see FIG. 6). It is not necessary that the entire cooling tool 1 is sealed in the packaging body 200. For example, when the cooling body 20 is not integrated with the main body 10 (when it can be added later), it is preferable that at least the cooling body 20 is stored in a state sealed in the packaging body 200. That is, the main body 10 and the cooling body 20 may be packaged separately, or only the cooling body 20 may be packaged. Furthermore, when water is added to the cooling body 20 for use, the cooling tool 1 to the cooling body 20 do not have to be sealed in the waterproof packaging body 200.

[0014] In this specification, the "width direction" refers to the direction that coincides with the arrangement direction of a first panel portion 10A and a second panel portion 10B, which will be described later, when the main body portion 10 is viewed in a planar direction (i.e., the state shown in FIG. 1). "Both widthwise ends of the main body portion 10" refers to the end of the first panel portion 10A on the earhook portion 30 side and the end of the second panel portion 10B on the earhook portion 30 side.

[0015] [Main body configuration] As shown in Figure 2, the main body 10 is provided with an inner sheet 11 that faces the wearer's skin (upper side in Figure 2) when the cooling device 1 is worn, and an outer sheet 12 arranged opposite the inner sheet 11 via the cooling body 20, and is formed in a sheet-like shape overall.

[0016] In this embodiment, the inner sheet 11 is configured to function as the intervening sheet 2 , and the outer sheet 12 is configured to function as the non-intervening sheet 3 .

[0017] The inner sheet 11 and the outer sheet 12 are formed to have the same shape and size, and are joined to each other with the cooling body 20 disposed between the inner sheet 11 and the outer sheet 12. Note that, in this embodiment, the inner sheet 11 and the outer sheet 12 are described as being formed to have the same shape and size, but this is not limited thereto, and the inner sheet 11 and the outer sheet 12 may have different shapes or sizes.

[0018] Here, a method for joining the inner sheet 11 and the outer sheet 12 will be described. In this embodiment, an adhesive (not shown) is applied to the outer sheet 12, and the cooling body 20 and the inner sheet 11 are bonded via the adhesive. As the adhesive, it is preferable to use a hot melt adhesive, but this is not limited, and various known fixing means can be used. For example, adhesives other than hot melt type, sewing, heat fusion, etc. are possible, but are not limited as long as they can be fixed.

[0019] Note that instead of or in addition to applying an adhesive to the outer sheet 12, it is also possible to adopt a configuration in which an adhesive is applied to the inner sheet 11. Also, the inner sheet 11 and the outer sheet 12 may be locally non-adhered to each other, thereby forming an opening and a storage space between the inner sheet 11 and the outer sheet 12 through which the cooling body 20 can be inserted and removed.

[0020] [Breathability of the main body] Whether or not the inner sheet 11 functioning as the intervening sheet 2 has air permeability is preferably determined in relation to a first sheet 23 (described later) of the cooling body 20. In this embodiment, since the first sheet 23 has poor air permeability or is air-impermeable, the inner sheet 11 may have any of air permeability, poor air permeability, and air-impermeability.

[0021] The outer sheet 12 functioning as the non-intervening sheet 3 has breathability. From the viewpoint of promoting vaporization heat dissipation due to evaporation of water, the air permeability of the outer sheet 12 is preferably 30,000 sec / 100 mL or less, more preferably 3,000 sec / 100 mL or less, even more preferably 300 sec / 100 mL or less, even more preferably 200 sec / 100 mL or less, even more preferably 100 sec / 100 mL or less, even more preferably 5 sec / 100 mL or less, and most preferably 0 sec / 100 mL.

[0022] It is sufficient that the outer sheet 12 has the above-mentioned air permeability at least in the area facing the humidity adjusting material 21 of the cooling body 20 via the second sheet 24 described later. In other words, the other areas may be configured to have no air permeability.

[0023] Here, air permeability is a value measured according to JIS P8117 (revised in 2009), and is the value at which 100 mL of air flows through a material at a constant pressure of 6.42 cm. 2It is defined as the time it takes for air to pass through an area of ​​1000 mm. Therefore, a large air permeability value means that it takes a long time for air to pass through, i.e., the air permeability is low. Conversely, a small air permeability value means that the air permeability is high. Thus, the air permeability value and the air permeability show an inverse relationship. Air permeability can be measured with an Oken air permeability meter. In this specification, an air permeability of less than 30,000 sec / 100 mL is defined as "air permeable", an air permeability of 30,000 sec / 100 mL or more and less than 80,000 sec / 100 mL is defined as "poorly air permeable", and an air permeability of 80,000 sec / 100 mL or more is defined as "non-air permeable".

[0024] [Breathability of the main body] Whether the inner sheet 11 has moisture permeability is preferably determined in relation to the first sheet 23. In this embodiment, since the first sheet 23 has low moisture permeability or no moisture permeability, the inner sheet 11 may have any of moisture permeability, low moisture permeability, and no moisture permeability.

[0025] The outer sheet 12 has moisture permeability. The moisture permeability of the outer sheet 12 is set to 2000 g / m from the viewpoint of promoting vaporization and heat dissipation due to evaporation of water. 2 24hr or more is preferable, 2500g / m 2 More preferably, 24hr or more, 3000g / m 2 It is even more preferable that the period is 24 hours or more.

[0026] It is sufficient that the outer sheet 12 has the above-mentioned moisture permeability at least in the area facing the humidity adjusting material 21 via the second sheet 24. In other words, the other areas may have no moisture permeability.

[0027] Here, moisture permeability refers to the property of passing water vapor. The moisture permeability is a value measured by the A-1 method of JIS L1099:2012, and is the permeability at 1 m 2The moisture permeability is defined as the moisture permeability per unit area per 100g / m2 in 24 hours. Therefore, a large value of the moisture permeability indicates high moisture permeability, and conversely, a small value of the moisture permeability indicates low moisture permeability. In this specification, the moisture permeability is defined as 100g / m2. 2 "Breathability" is defined as moisture permeability for 24 hours or more, and is 100g / m 2 Less than 24hr 30g / m 2 Moisture permeability of 24 hours or more is defined as "low moisture permeability" and 30g / m 2 Moisture permeability of less than 24 hours is defined as "non-breathable."

[0028] When the sheet members such as the inner sheet 11 and the outer sheet 12 have air permeability, they also have moisture permeability.

[0029] [Waterproofing of the main body] Whether the inner sheet 11 is waterproof or not is preferably determined in relation to the first sheet 23. In this embodiment, since the first sheet 23 is waterproof, the inner sheet 11 may be either waterproof or non-waterproof.

[0030] The outer sheet 12 may be either waterproof or non-waterproof.

[0031] Here, waterproofness refers to the property of preventing the penetration of water. Waterproofness can be evaluated by the degree of water resistance, which can be measured by JIS L 1092 A method. This degree of water resistance is the degree of resistance to the penetration of water through a 1 cm 2 It is defined as the height of a water column (mm) per unit area. Therefore, a larger water resistance value means a higher waterproofness, and conversely, a smaller water resistance value means a lower waterproofness. In this specification, a water resistance of 300 mm or more is defined as "waterproof," and a water resistance of less than 300 mm is defined as "non-waterproof" or "water permeable."

[0032] [Basis weight of main body] The basis weight of the inner sheet 11 is preferably determined from the viewpoints of improving the sheet thickness and strength in a well-balanced manner, and of improving the fit to the wearer's eyes and / or the area around the eyes. From this viewpoint, the basis weight of the inner sheet 11 is preferably set to 1 g / m 2 It is preferable that the content is 3 g / m or more. 2 More preferably, it is 5 g / m or more. 2 More preferably, it is 10 g / m or more. 2 More preferably, it is 15 g / m or more. 2 More preferably, it is 20 g / m or more. 2 It is even more preferable that the basis weight of the inner sheet 11 is 80 g / m or more. The basis weight of the inner sheet 11 is preferably determined from the viewpoints of increasing the efficiency of heat transfer from the wearer's eyes and / or the area around the eyes to the cooling body 20, facilitating evaporation of water held in the humidity adjusting material 21 and water retaining layer 22 of the cooling body 20, which will be described later, and making it easier for the wearer to feel coolness. From these viewpoints, the basis weight of the inner sheet 11 is preferably 80 g / m 2 It is preferable that the thickness is less than 60 g / m 2 More preferably, it is 40 g / m or less. 2 More preferably, it is 30 g / m or less. 2 Even more preferably, it is:

[0033] The basis weight of the outer sheet 12 is determined from the viewpoints of improving the fit to the wearer's eyes and / or the area around the eyes, of stably maintaining the shape of the main body 10, of stably holding the cooling body 20, and of preventing the cooling body 20 from being visible through the sheet and impairing the appearance. From these viewpoints, the basis weight of the outer sheet 12 is set to 10 g / m 2 It is preferable that the weight is 15 g / m or more. 2 More preferably, it is 20 g / m or more. 2 More preferably, it is 25 g / m or more. 2 It is even more preferable that the basis weight of the outer sheet 12 is 200 g / m or more from the viewpoint of providing a comfortable fit. 2 It is preferable that the thickness is less than 160 g / m 2 More preferably, it is 120 g / m or less. 2More preferably, it is 80 g / m or less. 2 Even more preferably, it is:

[0034] [Main body material] The material of the inner sheet 11 and the outer sheet 12 can be a material that has been conventionally used in the technical field of cooling devices that cover the wearer's eyes and / or the area around the eyes. For example, nonwoven fabric, woven fabric, fiber sheet such as paper, resin foam sheet, metal sheet, or a combination of these, etc. can be used. Among them, nonwoven fabric is preferably used from the viewpoint of ease of processing and economic efficiency. As the fiber material of the nonwoven fabric, for example, one or more types of fibers selected from polyester such as PET (polyethylene terephthalate); polyolefin such as PE (polyethylene), PP (polypropylene), and ethylene propylene copolymer; rayon; cotton, etc. can be preferably used. In addition, the nonwoven fabric can be manufactured by the air-through method, spunbond method, needle punch method, melt blown method, card method, heat fusion method, hydroentanglement method, solvent adhesion method, etc. using fibers of one or more materials described above, and may be a single layer or a multilayer structure. The nonwoven fabric may be chemically treated depending on the purpose.

[0035] In addition, the inner sheet 11 and the outer sheet 12 may each have a single-layer structure consisting of only one sheet material, regardless of whether it is a single layer or a multi-layer, or may have a multi-layer structure in which two or more types of sheet materials are layered. Furthermore, the inner sheet 11 and the outer sheet 12 may be configured to be made of different materials. Specifically, the outer sheet 12, which is placed on the outside when worn, may be made of a material suitable for giving the cooling tool shape retention, or a material suitable for improving the texture and appearance of the outer surface. On the other hand, the inner sheet 11, which is placed on the inside when worn, may be made of a material that is intended to be comfortable against the skin. In addition, the inner sheet 11 and the outer sheet 12 may be colored in any color, or may have any pattern (design) applied thereto by printing or the like. With such a configuration, the texture and style are improved, making it possible to make the cooling tool to the user's preference.

[0036] [Shape of main body, etc.] As shown in Figures 1 and 2, the main body portion 10 has a vertical centerline 100 that divides the main body portion 10 in the width direction, a first panel portion 10A that constitutes one side in the width direction of the vertical centerline 100, and a second panel portion 10B that constitutes the other side in the width direction of the vertical centerline 100.

[0037] The vertical center line 100 is a line extending perpendicular to the width direction at the center of the width of the main body part 10 when the main body part 10 is unfolded so that the surface facing away from the wearer's eyes (outer surface) faces upward (as shown in Figure 1).

[0038] The first panel portion 10A is configured to cover one eye (e.g., the right eye) of the wearer when the cooling tool 1 is worn. The second panel portion 10B is configured to cover the other eye (e.g., the left eye) of the wearer when the cooling tool 1 is worn. The first panel portion 10A and the second panel portion 10B are each formed in a substantially square shape, and the periphery of both ends in the width direction of the main body portion 10 is formed in an arc shape that protrudes outward. The first panel portion 10A and the second panel portion 10B may be formed in a square shape, a rectangular shape, or another shape.

[0039] The first panel portion 10A and the second panel portion 10B have a symmetrical shape with respect to the vertical center line 100, and are integrally continuous at the vertical center line 100. In other words, the main body portion 10 is made of a sheet-like member in which the first panel portion 10A and the second panel portion 10B of the same shape and size are arranged symmetrically. Note that instead of a configuration in which the first panel portion 10A and the second panel portion 10B are formed integrally from the beginning, for example, the first panel portion 10A and the second panel portion 10B may be formed as separate bodies and then mechanically connected to each other.

[0040] The first panel portion 10A and the second panel portion 10B are not connected to each other near an upper edge portion 13 and a lower edge portion 14 of the vertical center line 100, which will be described later, but are connected only at the vertical center line 100. As a result, the main body portion 10 is configured such that when the first panel portion 10A and the second panel portion 10B are unfolded about the vertical center line 100, the first panel portion 10A and the second panel portion 10B are in a planar shape arranged in parallel in the planar direction. That is, as shown in FIG. 2, the main body portion 10 is configured such that the first panel portion 10A and the second panel portion 10B can be unfolded about the vertical center line 100 so that the angle between the first panel portion 10A and the second panel portion 10B is 180 degrees. Note that the term "connection" as used herein includes both a configuration in which the first panel portion 10A and the second panel portion 10B are integrally formed and thus connected from the beginning, and a configuration in which the first panel portion 10A and the second panel portion 10B are formed as separate bodies and are mechanically connected.

[0041] 1, the main body 10 has an upper edge 13 located on the forehead side of the wearer when the cooling device 1 is worn, a lower edge 14 located on the nose side of the wearer when the cooling device 1 is worn, an upper slit 15 formed from the upper edge 13 toward the lower edge 14 side, and a lower slit 16 formed from the lower edge 14 toward the upper edge 13 side. The upper slit 15 and the lower slit 16 are formed on a vertical center line 100 that divides the main body 10 in half in the width direction.

[0042] The upper slit 15 is a generally triangular cutout that is tapered from the upper edge 13 toward the lower edge 14. Furthermore, the upper slit 15 is configured to be positioned between the eyebrows of the wearer or in the vicinity thereof when the cooling device 1 is worn.

[0043] The lower slit 16 is a cutout having a generally inverted triangle shape that is tapered from the lower edge 14 toward the upper edge 13. The tip of the lower slit 16 is formed into an arc shape that curves toward the upper edge 13. The lower slit 16 is configured to be located at or near the bridge of the wearer's nose when the cooling tool 1 is worn.

[0044] Since the main body 10 has the upper slits 15 and the lower slits 16, the upper slits 15 and the lower slits 16 increase the freedom of movement of the main body 10, thereby improving the fit of the cooling body 20 to the wearer's eyes and / or the area around the eyes. Therefore, there is an advantage that heat held by the wearer's eyes and / or the area around the eyes can be easily transferred to the cooling body 20, improving the cooling performance of the wearer's eyes and / or the area around the eyes, and that evaporation heat dissipation accompanying evaporation of water held by the humidity adjusting material 21 and the water retaining layer 22 of the cooling body 20 can be effectively generated.

[0045] The shapes of the upper edge 13, the lower edge 14, the upper slit 15, and the lower slit 16 of the main body 10 are appropriately adjusted so as to easily fit the wearer's eyes and / or the area around the eyes, and various arbitrary shapes can be adopted, such as a straight line, an arc shape, a shape having a locally convex portion or a curved portion, etc. For example, in the above embodiment, the upper slit 15 and the lower slit 16 are described as being cutouts, but this is not limited thereto, and the upper slit 15 and the lower slit 16 may be incision lines.

[0046] The main body 10 having the above configuration can be made compact before the cooling device 1 is used because the first panel portion 10A and the second panel portion 10B are folded in half along the vertical center line 100 into a flat shape (see FIG. 6). On the other hand, when the cooling device 1 is used, the main body 10 is opened from the edge opposite the vertical center line 100, and is worn so that the inner surface of the folded main body 10 faces the wearer (see FIG. 5).

[0047] Moreover, the main body 10 is configured to cover the eyes and the area around the eyes on the wearer's face when the cooling tool 1 is worn. In this specification, the "area around the eyes" refers to, for example, the forehead, eyebrows, cheeks, temples, and nose. In this embodiment, the main body 10 is described as being configured to cover the eyes and the area around the eyes on the wearer's face, but this is not limited thereto, and it is sufficient that the main body 10 is configured to cover at least the area around the eyes on the wearer's face. In other words, the main body 10 may have an opening in the area facing the wearer's eyes when the cooling tool 1 is worn. Moreover, the main body 10 may be configured to cover the entire face of the wearer.

[0048] In this embodiment, the main body 10 has been described as having the inner sheet 11 and the outer sheet 12, but the present invention is not limited thereto, and may have only one of the inner sheet 11 and the outer sheet 12, or may have neither the inner sheet 11 nor the outer sheet 12. Also, another sheet may be present between the inner sheet 11 and the cooling body 20, or another sheet may be present between the outer sheet 12 and the cooling body 20. In this case, the other sheet present between the inner sheet 11 and the cooling body 20 functions as the intervening sheet 2, and the other sheet present between the outer sheet 12 and the cooling body 20 functions as the non-intervening sheet 3.

[0049] [Cooling body configuration] As shown in Figures 1 to 4, the cooling body 20 has a water-retaining layer 22 arranged between the intervening sheet 2 and the non-intervening sheet 3, and a humidity adjusting material 21 arranged between the water-retaining layer 22 and the non-intervening sheet 3.

[0050] Furthermore, the cooling body 20 has a first sheet 23 that faces the wearer's skin when the cooling tool 1 is worn, and a second sheet 24 that is arranged to face the first sheet 23 via the water retention layer 22 and the humidity adjusting material 21. That is, in this embodiment, the first sheet 23 is configured to function as the intervening sheet 2, and the second sheet 24 is configured to function as the non-intervening sheet 3.

[0051] [Composition of humidity adjusting material] The humidity adjusting material 21 has a square shape and is formed in a sheet shape. However, the shape of the humidity adjusting material 21 is not limited to this, and may be, for example, a rectangular shape, a circular shape, a polygonal shape, or the like.

[0052] This humidity adjusting material 21 is configured to absorb moisture from the surface on the water retention layer 22 side and to volatilize the absorbed moisture from the surface on the non-interposed sheet 3 (the outer sheet 12 and the second sheet 24) side. In other words, the humidity adjusting material 21 is configured to absorb moisture from the water retention layer 22 and release water vapor to the non-interposed sheet 3 side.

[0053] [Moisture retention rate of humidity adjusting material] From the viewpoint of absorbing a large amount of moisture from the moisture retention layer 22, the moisture retention rate of the humidity adjusting material 21 is preferably 80% or more, more preferably 90% or more, and even more preferably 100% or more. In addition, the moisture retention rate of the humidity adjusting material 21 is preferably 500% or less, more preferably 400% or less, and even more preferably 300% or less.

[0054] Here, the water retention rate is a ratio of how much water a material can retain. A high water retention rate value indicates that the material has a high water absorption capacity, and a low water retention rate value indicates that the material has a low water absorption capacity.

[0055] The water retention can be calculated, for example, according to the following formula in accordance with "6.9.2 Water retention" of JIS L 1913:2010. m = (m2-m1) / m1 x 100 Here, m is the water retention rate (%) of the humidity adjusting material 21, m1 is the mass (mg) of the test piece in the standard state, and m2 is the mass (mg) of the test piece after wetting and dripping water. If it is not possible to take a test piece with the dimensions (100 mm x 100 mm) specified in "6.9.2 Water retention rate" of JIS L 1913:2010, a test piece with dimensions as close as possible to the said dimensions is taken.

[0056] [Water evaporation rate of humidity control material] The humidity adjusting material 21 has a water evaporation rate, measured by the following steps (1) to (5), of preferably 50% or more, more preferably 60% or more, and even more preferably 80% or more, from the viewpoint of promoting the release of water vapor toward the non-interposed sheet 3 (outer sheet 12 and second sheet 24) side. (1) Take a test piece measuring 50 mm x 50 mm from the sample and measure its weight. If it is not possible to take a test piece of that size, take a test piece of the same size as possible. (2) Fill a container of appropriate size with water and immerse the test piece for 15 minutes, then remove the test piece from the water with tweezers, drain the water for 1 minute, and measure its weight. If the test piece does not sink, place a weight on it. (3) Using the “weight before immersion” and “weight after immersion” of the test piece, calculate the water retention capacity according to the following formula. Water retention amount = "Weight after soaking" - "Weight before soaking" (4) The test piece is placed in a moisture meter (Kett Moisture Meter FD-240, manufactured by Kett Electric Laboratory Co., Ltd.), heated at 40°C for 20 minutes, and the amount of moisture evaporated (water evaporation amount) is calculated. (5) Using the “water retention capacity” and “water volatilization capacity”, calculate the water volatilization rate according to the following formula. Water volatilization rate = “Water volatilization amount” / “Water retention amount” x 100

[0057] Here, the water volatilization rate is a ratio of how much water a component volatilizes. A large water volatilization rate value indicates that the component has a high water volatilization ability, and a small water volatilization rate value indicates that the component has a low water volatilization ability.

[0058] For samples that decompose in water, for example, the following measurement can be used. That is, a nylon woven bag (80 mm x 80 mm) with mesh (149 μm) and the sample are weighed. Next, the sample is placed in the mesh bag, which is then placed upright in an appropriate beaker, and water is added so that the mesh bag does not come into direct contact with the water. The sample is then immersed for 15 minutes to allow it to swell sufficiently. The water is then drained for 1 minute, and the sample is weighed. The water volatilization rate is then calculated using a moisture meter in the same manner.

[0059] The humidity adjusting material 21 having the above water retention rate and water evaporation rate has a value of water retention rate [%] × water evaporation rate [%] / 100, preferably 50 or more and 500 or less, more preferably 80 or more and 400 or less, and even more preferably 100 or more and 300 or less, from the viewpoint of absorbing a large amount of moisture from the surface facing the water retention layer 22 and releasing a large amount of moisture from the surface facing the non-interposed sheet 3.

[0060] [Breathability of humidity control material] The humidity adjusting material 21 has air permeability. From the viewpoint of passing water vapor released from the water retaining layer 22 and dissipating heat from the cooling body 20, the air permeability of the humidity adjusting material 21 is preferably 300 sec / 100 mL or less, more preferably 100 sec / 100 mL or less, even more preferably 80 sec / 100 mL or less, and even more preferably 50 sec / 100 mL or less.

[0061] It is sufficient that the humidity adjusting material 21 has the above air permeability at least in the area facing the water retaining layer 22. In other words, the other areas may have no air permeability.

[0062] Since the humidity adjusting material 21 has breathability, it can pass water vapor released from the water retention layer 22, which has the advantage of further promoting the release of water vapor to the non-interposed sheet 3 (outer sheet 12 and second sheet 24) side. As a result, it is possible to promote the dissipation of heat held by the cooling body 20, and the cooling performance of the cooling device 1 can be improved.

[0063] [Moisture permeability of humidity adjusting material] The humidity adjusting material 21 has moisture permeability. The moisture permeability of the humidity adjusting material 21 is set to 3000 g / m from the viewpoint of allowing water vapor released from the water retaining layer 22 to pass therethrough and dissipating heat from the cooling body 20. 2 24hr or more is preferable, 3500g / m 2 More preferably, 24hr or more, 4000g / m 2 It is even more preferable that the period is 24 hours or more.

[0064] It is sufficient that the humidity adjusting material 21 has the above moisture permeability at least in the area facing the water retaining layer 22. In other words, the other areas may have no moisture permeability.

[0065] Since the humidity adjusting material 21 has moisture permeability, it not only volatilizes the moisture absorbed from the water retaining layer 22, but also allows water vapor released from the water retaining layer 22 to pass through, which has the advantage of further promoting the release of water vapor to the non-interposed sheet 3 (outer sheet 12 and second sheet 24) side. As a result, it is possible to promote the dissipation of heat held by the cooling body 20, and the cooling performance of the cooling device 1 can be improved.

[0066] [Rigidity of humidity control material] The humidity adjusting material 21 has rigidity. The rigidity of the humidity adjusting material 21 has the advantage that it can stably hold the water retaining layer 22 and can maintain the shape of the cooling body 20. As a result, it is possible to improve the productivity when installing the cooling body 20 in the main body 10. From the above viewpoint, the bending resistance of the humidity adjusting material 21 is preferably 30 mm or more and 150 mm or less, more preferably 40 mm or more and 120 mm or less, and further preferably 50 mm or more and 100 mm or less.

[0067] Here, the bending resistance is a value measured and calculated by the following method, which conforms to JIS L 1096:2010 Method A (45° cantilever method) with some modifications to the following methods (3) and (4). (1) Take five test pieces measuring 20 mm x approximately 150 mm, and place them on a smooth, horizontal table with one end sloped at 45°, with the short side of the test pieces aligning with the scale baseline. (2) Gently slide the test specimen in the direction of the inclined surface by an appropriate method, and when the center point of one end of the test specimen touches the inclined surface, read the position of the other end of the test specimen on the scale. (3) The bending resistance is indicated by the length (mm) traveled by the test specimen, and is measured only on the vertical surface of five test specimens. (4) Calculate the average of the vertical values ​​and round it down to the nearest integer. A small bending resistance value means that the sheet used for measurement is soft (has low rigidity), and a large bending resistance value means that the sheet used for measurement is hard (has high rigidity).

[0068] [Humidity control materials] Examples of materials for the humidity adjusting material 21 include crepe paper and kraft paper. Among them, it is preferable to use crepe paper from the viewpoint of absorbing a large amount of moisture from the water retaining layer 22 and from the viewpoint of improving the volatilization rate of the moisture absorbed from the water retaining layer 22.

[0069] [Water retention layer composition] The water retention layer 22 is laminated on the humidity adjusting material 21. In this embodiment, the water retention layer 22 has a water retention material provided on the humidity adjusting material 21 and water retained in the water retention material. In this specification, the water retention material has a water retention ability (water absorption or water removal function), and there is no particular limitation on the type as long as it is capable of retaining water. Examples of the water retention material include one or more types selected from carbon components, fiber materials, water-absorbent powders, and the like.

[0070] The carbon component has water retention capability, and may be, for example, one or more selected from activated carbon, acetylene black, and graphite. As the fiber material, it is more preferable to use hydrophilic fibers, and in particular, cellulose fibers. As the cellulose fibers, chemical fibers (synthetic fibers) and natural fibers may be used. Furthermore, as water-absorbing powders other than those mentioned above, one or more selected from vermiculite, sawdust, silica gel, calcium silicate, zeolite, pulp powder, and water-absorbing polymers may be used.

[0071] The water-absorbing polymer may be a hydrophilic polymer having a cross-linked structure capable of absorbing and retaining 20 times or more of its own weight in liquid. The shape of the water-absorbing polymer may be any of a sphere, a block, a bunch of grapes, and a fiber. The mass-average particle size of the water-absorbing polymer is preferably 1 μm or more, more preferably 10 μm or more, and even more preferably 100 μm or more. The mass-average particle size of the water-absorbing polymer is preferably 1000 μm or less, more preferably 700 μm or less, and even more preferably 500 μm or less. The particle size of the water-absorbing polymer is measured by a laser diffraction method.

[0072] Specific examples of water-absorbent polymers include one or more selected from the group consisting of starch, crosslinked carboxylmethylated cellulose, polymers or copolymers of acrylic acid or alkali metal salts of acrylic acid, polyacrylic acid and its salts, and polyacrylate graft polymers. Among these, polymers or copolymers of acrylic acid or alkali metal salts of acrylic acid, polyacrylic acid and its salts, and polyacrylate graft polymers are preferred because the amount of water supported is easily maintained within a specific range.

[0073] Examples of the water retention layer 22 when a water-absorbent polymer is used include (a) a mode having a single layer formed by sandwiching the water-absorbent polymer between two moisture-permeable sheets, (b) a mode in which the water-absorbent polymer is directly laminated to the humidity adjusting material 21 and arranged in a single layer, or (c) a mode having a laminate structure in which a first water-absorbent polymer layer in which water-absorbent polymers are arranged in adjacent layers and a second water-absorbent polymer layer adjacent to the first water-absorbent polymer layer and formed by sandwiching water-absorbent resin powder between two moisture-permeable sheets are arranged.

[0074] The water retained in the water-retaining material may be derived from an aqueous electrolyte solution (e.g., an aqueous solution of an alkali metal, an alkaline earth metal, etc.), and may also contain added preservatives, bacteriostatic agents, disinfectants, or antioxidants, such as ethanol, methylparaben, ethylparaben, propylparaben, butylparaben, phenoxyethanol, 1,3-butylene glycol, propylene glycol, and dipropylene glycol.

[0075] As described above, the water retaining layer 22 according to this embodiment is configured to retain water. Specifically, the water retaining layer 22 is configured to retain water when the cooling body 20 is sealed in the packaging body 200. The configuration of the water retaining layer 22 is not limited thereto. For example, the water retaining layer 22 may be configured to be capable of retaining water. That is, the water retaining layer 22 may not retain water when the cooling body 20 is sealed in the packaging body 200, and may be configured to retain water by impregnating the water retaining layer 22 with water when the cooling device 1 is used.

[0076] The initial content of water held in the water retention layer 22 is preferably 1% by mass or more of the maximum water absorption of the water retention layer 22, more preferably 2% by mass or more, even more preferably 3% by mass or more, and even more preferably 4% by mass or more, from the viewpoint of increasing the cooling effect at the beginning of wearing the cooling device 1 and from the viewpoint of fully exerting the high cooling effect of the humidity adjusting material 21. Moreover, from the viewpoint of reducing the weight of the cooling body 20 and preventing the cooling device 1 from slipping off the face, the initial content of water is preferably 20% by mass or less of the maximum water absorption of the water retention layer 22, more preferably 15% by mass or less, even more preferably 10% by mass or less, and even more preferably 7% by mass or less.

[0077] [Method for measuring maximum water absorption of water-retaining layer] The maximum water absorption of the water retention layer 22 can be measured, for example, by the following method. That is, first, a 250 mesh (61 μm) nylon woven bag (100 mm × 150 mm) and a sample are weighed, and the tare weight of the mesh bag and the weight of the sample are measured. Next, the sample is placed in the mesh bag, and the mesh bag is placed upright in a 300 mL beaker, and 300 mL of ion-exchanged water is added so that the mesh bag does not directly touch the water, and the sample is soaked for 30 minutes to allow it to swell sufficiently. After that, the sample is hung for 10 minutes to drain the water, and the sample is weighed to two decimal places on an analytical balance. Then, the maximum water absorption is calculated by the following formula using the "total weight of the mesh bag," "tare weight of the mesh bag," and "weight of the sample" obtained above. "Maximum water absorption" = "Total weight of mesh bag" - "Tare weight of mesh bag" - "Weight of sample"

[0078] From the above viewpoint, the initial content of water held in the water retaining layer 22 (i.e., the water content immediately after the packaging material such as the oxygen barrier bag is opened) is set to 1 cm 2 It is preferable that the volume is 0.04 mL or more per cm 2 More preferably, it is 0.08 mL or more per cm 2 More preferably, the volume is 0.10 mL or more per cm 2 Preferably, the volume is 0.40 mL or less per cm 2More preferably, it is 0.30 mL or less per cm 2 It is even more preferable that the amount is 0.25 mL or less per unit time.

[0079] [Definition of initial water content] The initial water content in the water retaining layer 22 of the cooling body 20 is defined by the following procedure. That is, first, the packaging is opened, the cooling device 1 is removed from the packaging, and the portion of the cooling device 1 that contains water, i.e., the cooling body 20, is removed, and then the cooling body 20 is placed in a moisture meter (Kett Moisture Meter FD-240, manufactured by Kett Electric Laboratory Co., Ltd.). Then, 30 seconds after the start of opening the packaging, the moisture meter starts measuring the cooling body 20. In the above method, when the sample is heated and dried at 70° C. for 10 hours using a moisture meter, the difference between the weight before and the weight after drying is defined as the initial water content.

[0080] [Structure of the first and second sheets] The first sheet 23 and the second sheet 24 have a square shape and are formed in a sheet shape. Note that the shape of the first sheet 23 and the second sheet 24 is not limited thereto, and may be, for example, a rectangular shape, a circular shape, a polygonal shape, or the like.

[0081] The first sheet 23 and the second sheet 24 are formed to have the same shape and size, and the peripheral portions of the first sheet 23 and the second sheet 24 are joined to each other with the humidity adjusting material 21 and the water retaining layer 22 disposed between the first sheet 23 and the second sheet 24. Note that in the present embodiment, the first sheet 23 and the second sheet 24 are described as being formed to have the same shape and size, but this is not limited thereto, and for example, the first sheet 23 and the second sheet 24 may have different shapes or sizes. The joining method of the first sheet 23 and the second sheet 24 may be the same as or different from the joining method of the inner sheet 11 and the outer sheet 12.

[0082] The materials of the first sheet 23 and the second sheet 24 may be the same as those of the inner sheet 11 and the outer sheet 12, or may be different.

[0083] [Breathability of the first and second sheets] The first sheet 23 functioning as the intervening sheet 2 may be breathable, poorly breathable, or non-breathable. However, it is preferable that the first sheet 23 be breathably or non-breathable from the viewpoint of defining the steam release direction of the water retaining layer 22 toward the non-intervening sheet 3 (the outer sheet 12 and the second sheet 24) side and from the viewpoint of preventing the wearer's skin from becoming stuffy or wet. In this embodiment, the first sheet 23 is breathably or non-breathable.

[0084] The first sheet 23 being poorly or non-breathable has the advantage of increasing the freedom of design of the inner sheet 11. In other words, when the first sheet 23 is poorly or non-breathable, there is no need to consider the breathability of the inner sheet 11, and so other functions can be imparted to the inner sheet 11. Examples of other functions include a function to improve the comfort of the cooling device 1 when worn, a function to improve the cooling properties of the cooling device 1, etc.

[0085] The second sheet 24, which functions as the non-intervening sheet 3, is breathable. From the viewpoint of promoting evaporation heat dissipation due to evaporation of water, the air permeability of the second sheet 24 is preferably 300 sec / 100 mL or less, more preferably 200 sec / 100 mL or less, and even more preferably 100 sec / 100 mL or less.

[0086] It is sufficient that the second sheet 24 has the above air permeability at least in the area facing the humidity adjusting material 21. In other words, the other areas may be configured to have no air permeability.

[0087] [Moisture permeability of the first and second sheets] The first sheet 23 may be moisture permeable, moisture-impermeable, or moisture-impermeable. However, it is preferable that the first sheet 23 be moisture-impermeable or moisture-impermeable from the viewpoint of defining the direction of vapor release from the water retaining layer 22 toward the non-interposed sheet 3 (the outer sheet 12 and the second sheet 24) side and from the viewpoint of preventing the wearer's skin from becoming stuffy or wet. In this embodiment, the first sheet 23 is moisture-impermeable or moisture-impermeable.

[0088] The first sheet 23 having low moisture permeability or no moisture permeability has the advantage of improving the degree of freedom in designing the inner sheet 11. In other words, when the first sheet 23 has low moisture permeability or no moisture permeability, there is no need to consider the moisture permeability of the inner sheet 11, and therefore other functions can be imparted to the inner sheet 11. Examples of other functions include a function to improve the comfort of the cooling device 1 when worn, a function to improve the cooling properties of the cooling device 1, etc.

[0089] The second sheet 24 has moisture permeability. The moisture permeability of the second sheet 24 is set to 2000 g / m from the viewpoint of promoting evaporation and heat dissipation due to evaporation of water. 2 24hr or more is preferable, 2500g / m 2 More preferably, 24hr or more, 3000g / m 2 It is even more preferable that the period is 24 hours or more.

[0090] It is sufficient that the second sheet 24 has the above moisture permeability at least in the area facing the humidity adjusting material 21. In other words, the other areas may have no moisture permeability.

[0091] [Waterproofing of the first and second sheets] The first sheet 23 may be either waterproof or non-waterproof. In this embodiment, the first sheet 23 is waterproof. When the first sheet 23 is waterproof, there is no need to consider the waterproofness of the inner sheet 11, and therefore other functions can be imparted to the inner sheet 11. Examples of other functions include a function to improve the comfort of wearing the cooling device 1 and a function to improve the cooling performance of the cooling device 1.

[0092] The water resistance of the first sheet 23 is preferably 300 mm or more, more preferably 500 mm or more, and even more preferably 1000 mm or more, from the viewpoint of preventing the wearer's skin from getting wet.

[0093] It is sufficient that the first sheet 23 has the above-mentioned water resistance at least in the area between the wearer's eyes and the water retaining layer 22. In other words, the other areas may not have waterproof properties.

[0094] The second sheet 24 may be either waterproof or non-waterproof.

[0095] In this embodiment, the cooling body 20 has been described as having the first sheet 23 and the second sheet 24, but the present invention is not limited to this and may have only one of the first sheet 23 and the second sheet 24. Alternatively, the cooling body 20 may not have the first sheet 23 and the second sheet 24, and the humidity adjusting material 21 and the water retaining layer 22 may be fixed to the inner sheet 11 or the outer sheet 12, or the humidity adjusting material 21 and the water retaining layer 22 may be enclosed between the inner sheet 11 and the outer sheet 12.

[0096] [Fragrance ingredients in cooling body] The cooling body 20 may contain, for example, fragrance ingredients described in "Synthetic Fragrance Chemistry and Product Knowledge" (by Genichi Indo, Chemical Daily Press) or may be added to any desired location within a range that does not impair the effects of the present invention. Specific examples of the aromatic hydrocarbons include terpene hydrocarbons such as myrcene, farnesene, pinene, limonene, camphene, phellandrene, terpinene, terpinolene, p-cymene, cedrene, and caryophyllene; aldehydes such as hexylcinnamic aldehyde, 2-methyl-3-(4-tert-butylphenyl)-propanal, 4-(4-hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde, and vanillin; aromatic alcohols such as benzyl alcohol, phenylethyl alcohol, pamplefleur (2-methyl-4-phenylpentanol), dimethylbenzyl carbinol, and phenylhexanol (3-methyl-5-phenylpentanol); phenols such as anethole and eugenol; and lactones such as γ-nonalactone and γ-undecalactone.

[0097] [Cooling ingredients in cooling bodies] From the viewpoint of providing an even more cooling sensation, the cooling body 20 may be blended with or added to any part of the cooling body 20 as long as the effect of the invention is not hindered. Among the temperature-sensitive TRP channels present in the body, those containing an agonist acting on TRPM8, which is a cold receptor, are preferable. For example, menthol such as L-menthol and DL-menthol, menthanediol, cineol, menthyl glyceryl ether, menthone glycerin acetal, butylcyclohexanone, isopulegol, trimethylisopropylbutanamide, menthoxypropanediol, camphor, etc. may be mentioned, and plants and essential oils such as peppermint oil, peppermint oil, spearmint oil, and eucalyptus oil containing TRPM8 agonists may be used. These may be used alone or in combination of two or more. Among these, from the viewpoints of comfort, effectiveness, and safety during use, one or more selected from menthol, menthyl lactate, menthyl succinate, menthyl glutarate, trimethylisopropylbutanamide, menthoxypropanediol, and camphor are preferred, and menthol is more preferred.

[0098] [Cooling body placement] The cooling body 20 is disposed in the main body 10 such that at least a portion thereof comes into direct or indirect contact with the wearer's eyes and / or the area around the eyes when the cooling device 1 is worn. Specifically, the cooling body 20 is disposed in the main body 10 such that at least a portion thereof comes into contact with the wearer's eyes and the area around the eyes via the inner sheet 11 when the cooling device 1 is worn.

[0099] In this embodiment, at least a part of the cooling body 20 is described as being in contact with the wearer's eyes and the area around the eyes via the inner sheet 11, but this is not limited thereto, and it is sufficient that at least a part of the cooling body 20 is in direct or indirect contact with the area around the wearer's eyes. That is, the cooling body 20 may have an opening in the area facing the wearer's eyes when the cooling tool 1 is worn. Furthermore, at least a part of the cooling body 20 may be in direct or indirect contact with the entire area of ​​the wearer's face.

[0100] 1, the cooling bodies 20 according to this embodiment are provided on the first panel portion 10A and the second panel portion 10B, respectively, so as to be symmetrical with respect to the vertical center line 100. In the illustrated example, a total of two cooling bodies 20 are provided, one each on the first panel portion 10A and the second panel portion 10B.

[0101] In the present embodiment, the cooling body 20 is provided on each of the first panel portion 10A and the second panel portion 10B, but the present invention is not limited thereto, and for example, two cooling bodies 20 may be provided on each of the first panel portion 10A and the second panel portion 10B, or one cooling body 20 may be provided on the entire main body portion 10. Furthermore, when a plurality of cooling bodies 20 are provided, the cooling characteristics of the plurality of cooling bodies 20 may be the same or different, but it is more preferable that they are the same.

[0102] [Ear hook configuration] The ear hooks 30 are provided at both widthwise ends of the main body 10 and are configured to be able to hold the main body 10 on the wearer's face so that the main body 10 covers at least the eyes and / or the area around the eyes (see FIG. 5). Specifically, the ear hooks 30 are configured to be able to hold the main body 10 on the wearer's face so that the main body 10 covers at least the eyes and the area around the eyes.

[0103] The ear hook portion 30 may be configured so that the main body portion 10 can be held on the wearer's face so that at least the area around the eyes of the wearer's face is covered by the main body portion 10. The ear hook portion 30 may be configured so that the main body portion 10 can be held on the wearer's face so that the entire face is covered by the main body portion 10.

[0104] 2 and 6, the ear hook parts 30 are folded and stored inside the main body part 10 before the cooling tool 1 is used. Also, as shown in Figs. 1 and 5, the ear hook parts 30 are deployed outward in the width direction of the main body part 10 when the cooling tool 1 is used.

[0105] 1, the ear hooks 30 are inclined toward the lower side of the main body 10 when worn relative to the width direction of the main body 10. Also, the ear hooks 30 are joined to the main body 10 by joints 50 that are inclined relative to the up-down direction of the main body 10 when worn.

[0106] Examples of the configuration of the joint 50 according to this embodiment include the following configurations (1) and (2). (1) When the main body 10 and the ear hook portion 30 are connected to each other by another material such as an adhesive (for example, a hot melt adhesive), the other material such as the adhesive functions as the joint 50. (2) When the main body portion 10 and the ear hook portion 30 are joined to each other without the use of any other components, such as when the main body portion 10 and the ear hook portion 30 are connected to each other by thermal fusion, the joining area of ​​the main body portion 10 where the ear hook portion 30 is joined and the joining area of ​​the ear hook portion 30 where the main body portion 10 is joined each function as joint 50.

[0107] 1, each ear hook 30 has an ear hook body 31 and an ear hook hole 32 through which the wearer's ear can be inserted. The ear hook body 31 has an upper side 31a, a lower side 31b, an open edge 31c on the open side of the ear hook 30 that is not joined to the main body 10, and a joining edge 31d that is joined to the main body 10.

[0108] In this embodiment, the ear hook body 31 has a planar shape and is substantially rectangular. Specifically, the upper side 31a and the lower side 31b are tapered from the joining edge 31d side toward the open edge 31c, and are curved at the portion where they are connected to the open edge 31c. The joining edge 31d has a shape that follows the periphery of the first panel portion 10A or the second panel portion 10B.

[0109] The ear hole 32 is an arc-shaped cut line formed from the vicinity of the joining edge 31d of the ear hook body 31 to the vicinity of the open edge 31c of the ear hook body 31. The ear hole 32 is configured so that the wearer's ear can be inserted through it. The shape of the ear hole 32 is not limited in any way, and it may be a straight cut line or an opening through which the wearer's ear can be inserted.

[0110] The ear hook portion 30 may be made of the same material as the main body portion 10 or may be made of a different material. From the viewpoint of improving the fit of the main body portion 10, it is preferable that the material is elastic and easily stretches in the width direction of the main body portion 10. In this embodiment, the ear hook portion 30 is preferably made of a nonwoven fabric, and more preferably an elastic nonwoven fabric. In addition, the ear hook portion 30 may have a multi-layer structure in which an elastomer film is laminated on a nonwoven fabric from the viewpoint of further increasing the elasticity. In addition, the ear hook portion 30 preferably contains a thermoplastic resin as a constituent fiber from the viewpoint of binding with the main body portion 10. Furthermore, it is more preferable that the ear hook portion 30 contains polypropylene from the viewpoint of ease of processing. In addition, the ear hook portion 30 may further contain a thermoplastic resin other than polypropylene, and for example, it is preferable to further contain one or more selected from the group consisting of urethane, polyethylene, and polyethylene terephthalate, and it is more preferable to use a synthetic fiber made of urethane. With such a configuration, the flexibility and fit of the ear hook portion 30 can be efficiently expressed, and sufficient strength can be expressed when the cooling device 1 is used.

[0111] The ear hooks 30 are not limited to the flat ear hooks described above, and may be any type that can be used to hold a cooling device, as long as they are capable of holding the main body 10 on the wearer's face. For example, various configurations such as rubber-like ear hooks and one or more bands that are stretched across both widthwise ends of the first panel 10A and the second panel 10B may be used. The ear hooks 30 are not limited to being separate members joined to both widthwise ends of the main body 10, and may be integrally formed with the main body 10.

[0112] [90-minute average temperature and 90-minute average relative humidity of cooling device] The cooling device 1 having the above-mentioned configuration can provide a high cooling effect for a long period of time, and can also maintain humidity in and / or around the wearer's eyes for a long period of time.

[0113] Specifically, in a cooling device 1 in which the first sheet 23 is configured to be moisture-resistant or moisture-non-permeable and the second sheet 24 and the outer sheet 12 are configured to be breathable, it is possible to keep the 90-minute average temperature at the portion of the cooling body 20 that comes into direct or indirect contact with the wearer's eyes and / or the area around the eyes to 30° C. or less. It is also possible to maintain the 90-minute average relative humidity at 40% or more and 85% or less in areas of the cooling body 20 that are not in direct or indirect contact with the wearer's eyes and / or the area around the eyes.

[0114] More specifically, the 90-minute average temperature of the cooling device 1 is more preferably 30° C. or less, and even more preferably 28° C. or less. In addition, the 90-minute average relative humidity of the cooling device 1 is more preferably 50% or more and 85% or less, and even more preferably 60% or more and 80% or less.

[0115] Here, the 90-minute average temperature and 90-minute average relative humidity can be measured by the following method. That is, a humidity sensor is placed on the upper eyelid of a female human head model (width 151.24 mm, depth 206.82 mm, height 233.01 mm) modeled based on the female average human head data (latest data at the time of filing) manufactured by Digital Human Technology Co., Ltd., and fixed with surgical tape to prevent movement. Then, in a 30°C, 40% RH environment, the cooling tool 1 is attached to the female human head model, and the temperature and humidity changes are measured every 10 seconds. The temperature and humidity sensor can be the SHT71 temperature and humidity sensor (manufactured by Sensirion Co., Ltd.).

[0116] [How to use cooling devices] Next, a method of using the cooling tool 1 according to this embodiment will be described. In this embodiment, since the cooling body 20 is integrated with the main body 10, the entire cooling tool 1 is stored in a state in which it is enclosed in a waterproof packaging body 200 (see FIG. 6). In this storage state, the main body 10 is folded around the vertical center line 100. Furthermore, the water retention layer 22 of the cooling body 20 retains water when the cooling tool 1 is enclosed in the packaging body 200.

[0117] When using the cooling tool 1, first, the wearer opens the package 200 and removes the cooling tool 1 from the package 200. After removing the cooling tool 1 from the package 200, the wearer opens the folded main body 10 from both ends in the width direction and removes the pair of ear hooks 30 from the inside of the main body 10. Then, as shown in FIG. 5(a), the wearer pulls the ear hooks 30 with his / her fingers while placing the main body 10 against the wearer's eyes and the areas around the eyes, and inserts the ears through the ear hook holes 32. By hooking the pair of ear hooks 30 on the left and right ears of the wearer in this way, the main body 10 can be held on the wearer's face so that the wearer's eyes and the areas around the eyes are kept covered by the main body 10, as shown in FIG. 5(b).

[0118] In the cooling tool 1 according to this embodiment, the water retaining layer 22 retains water when the cooling tool 1 is sealed in the packaging body 200, so there is no need to make the water retaining layer 22 retain water by, for example, immersing the cooling tool 1 in water after removing it from the packaging body 200. This has the advantage that the cooling tool 1 can be used simply by opening the packaging body 200. In addition, when only one cooling tool 1 is sealed in the packaging body 200, there is also the advantage that it is hygienic.

[0119] When the wearer's eyes and the area around the eyes are covered by the main body 10 in this manner, at least a portion of the cooling body 20 comes into contact with the wearer's eyes and the area around the eyes via the inner sheet 11, so that heat is conducted from the wearer's eyes and the area around the eyes to the cooling body 20, thereby cooling the wearer's eyes and the area around the eyes.

[0120] In addition, in the cooling device 1 according to this embodiment, since the humidity adjusting material 21 absorbs moisture from the water retention layer 22, when the cooling body 20 is warmed by the heat of the wearer's eyes and the surroundings of the eyes, the moisture transferred from the water retention layer 22 to the humidity adjusting material 21 evaporates, and the water vapor passes through the non-interposed sheet 3 (the second sheet 24 and the outer sheet 12) and is released to the outside of the cooling device 1. When the cooling body 20 is warmed by the heat of the wearer's eyes and the surroundings of the eyes, the water held by the water retention layer 22 also evaporates, so the water vapor released from the water retention layer 22 also passes through the humidity adjusting material 21 and the non-interposed sheet 3 and is released to the outside of the cooling device 1. Therefore, the heat conducted from the wearer's eyes and the surroundings of the eyes to the cooling body 20 is dissipated from the cooling body 20.

[0121] Furthermore, because heat is conducted from the cooling body 20 to the outside air, the heat conducted from the wearer's eyes and the area around the eyes to the cooling body 20 is dissipated from the cooling body 20. When heat is dissipated from the cooling body 20, heat is again conducted from the wearer's eyes and the area around the eyes to the cooling body 20, so that the wearer's eyes and the area around the eyes can be further cooled. Due to this cooling mechanism, the cooling device 1 according to this embodiment can provide the wearer with a feeling of coolness for a long period of time.

[0122] In particular, in the cooling device 1 according to this embodiment, as described above, the humidity adjusting material 21 absorbs moisture from the surface on the water retention layer 22 side and volatilizes the absorbed moisture from the surface on the non-interposed sheet 3 side, so that the amount of water vapor passing through the non-interposed sheet 3 is greater than in the case where there is no humidity adjusting material 21. In other words, the amount of heat dissipation of the cooling body 20 can be increased, and therefore a high cooling effect can be obtained.

[0123] [Advantages of the cooling device according to this embodiment] Thus, the cooling device 1 according to this embodiment is a cooling device 1 comprising a main body 10 covering at least the eyes and / or the area around the eyes of the wearer's face, and a cooling body 20 provided on the main body 10, the cooling body 20 having a water-retaining layer 22 that retains or can retain water, and the cooling body 20 being arranged on the main body 10 such that at least a portion of the cooling body 20 is in direct or indirect contact with the wearer's eyes and / or the area around the eyes when worn, the cooling device 1 having an intervening sheet 2 arranged between the wearer's eyes and / or the area around the eyes and the water-retaining layer 22 when worn, and a non-intervening sheet 3 having breathability, the water-retaining layer 22 being arranged between the intervening sheet 2 and the non-intervening sheet 3, the cooling body 20 having a humidity adjusting material 21 arranged between the water-retaining layer 22 and the non-intervening sheet 3, and the humidity adjusting material 21 being configured to absorb moisture from the surface on the water-retaining layer 22 side and volatilize the absorbed moisture from the surface on the non-intervening sheet 3 side.

[0124] According to the cooling device 1 having such a configuration, the humidity adjusting material 21 absorbs moisture from the water retention layer 22 and releases the absorbed moisture to the breathable non-interposed sheet 3 side, so that the amount of water vapor passing through the non-interposed sheet 3 is greater than when there is no humidity adjusting material 21. As a result, there is an advantage that the amount of heat dissipated by the cooling body 20 can be increased, and therefore a high cooling effect can be obtained. In other words, the cooling effect to the wearer's eyes and / or the area around the eyes can be improved.

[0125] Moreover, in the cooling device 1 according to this embodiment, the cooling body 20 has a first sheet 23 facing the wearer's skin when worn, and a second sheet 24 arranged to face the first sheet 23 via the water retention layer 22 and humidity adjusting material 21, the first sheet 23 is configured to function as the intervening sheet 2, and the second sheet 24 is configured to function as the non-intervening sheet 3. According to the cooling device 1 having such a configuration, the second sheet 24 functions as the non-intervening sheet 3 having breathability and allows water vapor released from the water retention layer 22 and humidity adjusting material 21 to pass through, which has the advantage of promoting dissipation of heat conducted from the wearer's eyes and / or the surroundings of the eyes to the cooling body 20 and improving the cooling properties for the wearer's eyes and / or the surroundings of the eyes.

[0126] Furthermore, in the cooling device 1 according to this embodiment, the first sheet 23 has low moisture permeability or moisture impermeability. The cooling device 1 having such a configuration has the advantage that the steam release direction of the water retaining layer 22 can be regulated to the non-interposed sheet 3 side, and the wearer's skin can be prevented from becoming stuffy or wet.

[0127] Furthermore, in the cooling device 1 according to this embodiment, the main body 10 has an inner sheet 11 that faces the wearer's skin when worn, and an outer sheet 12 that is arranged to face the inner sheet 11 via the cooling body 20, the inner sheet 11 being configured to function as the intervening sheet 2, and the outer sheet 12 being configured to function as the non-intervening sheet 3. According to the cooling device 1 having such a configuration, the outer sheet 12 functions as the breathable non-intervening sheet 3 and allows water vapor released from the humidity adjusting material 21 to pass through, which has the advantage of promoting dissipation of heat conducted from the wearer's eyes and / or the area around the eyes to the cooling body 20 and improving the cooling effect on the wearer's eyes and / or the area around the eyes.

[0128] Furthermore, in the cooling tool 1 according to this embodiment, the main body 10 has a vertical center line 100 that divides the main body 10 in the width direction, a first panel portion 10A that constitutes one side in the width direction with the vertical center line 100 as a boundary, and a second panel portion 10B that constitutes the other side in the width direction with the vertical center line 100 as a boundary, and the cooling body 20 is provided on each of the first panel portion 10A and the second panel portion 10B. According to the cooling tool 1 having such a configuration, it is possible to improve the fit of the cooling body 20 to the wearer's eyes and / or the area around the eyes. Therefore, it is possible to promote heat conduction from the wearer's eyes and / or the area around the eyes to the cooling body 20 and promote evaporation of moisture absorbed by the humidity adjusting material 21, which has the advantage of improving the cooling performance to the wearer's eyes and / or the area around the eyes.

[0129] [Variations] The cooling device according to the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the technical concept of the present invention.

[0130] For example, in the above-described embodiment, the main body 10 is described as having an upper slit 15 and a lower slit 16, but this is not limited to this, and the main body 10 may be configured not to have an upper slit 15 or a lower slit 16.

[0131] In addition, in the above-described embodiment, the ear hook portion 30 is described as being inclined toward the lower side of the main body portion 10 when worn in relation to the width direction of the main body portion 10, but this is not limited to this, and for example, the ear hook portion 30 may be arranged along the width direction of the main body portion 10.

[0132] It is apparent from the claims that the above-mentioned modifications are included within the scope of the present invention.

[0133] In relation to the above-mentioned embodiment, the present invention further discloses the following cooling device.

[0134] <1> A cooling device comprising a main body portion that covers at least the eyes and / or the area around the eyes of a wearer's face, and a cooling body provided on the main body portion, The cooling body has a water-retaining layer that retains or can retain water, The cooling body is disposed on the main body portion so that at least a portion of the cooling body is in direct or indirect contact with the wearer's eyes and / or the area around the eyes when the cooling body is worn; The cooling device is an intervening sheet disposed between the wearer's eyes and / or the area around the eyes and the moisture retaining layer when worn; A non-interposed sheet having breathability having the water retaining layer is disposed between the intervening sheet and the non-intervening sheet, The cooling body has a humidity adjusting material disposed between the water retaining layer and the non-interposed sheet, The humidity adjusting material is configured to absorb moisture from the surface on the water retaining layer side and to volatilize the absorbed moisture from the surface on the non-interposed sheet side. Cooling equipment.

[0135] <2> The humidity adjusting material has an air permeability of 300 sec / 100 mL or less at least in a region facing the water retaining layer. The above <1> The cooling device described in <3> The humidity adjusting material has a moisture permeability of at least 3000 g / m 2 - 24 hours or more The above <1> or <2> The cooling device described in <4> The humidity adjusting material has a water evaporation rate of 50% or more. The above <1> ~ <3> 13. The cooling device according to claim 12 .

[0136] <5> The moisture retention rate of the humidity adjusting material is 80% or more. The above <1> ~ <4> 13. The cooling device according to claim 12 . <6> The humidity adjusting material has a value of water retention rate [%] of the humidity adjusting material × water evaporation rate [%] of the humidity adjusting material / 100 of 50 to 500. The above <1> ~ <5> 13. The cooling device according to claim 12 . <7> The humidity adjusting material has a bending resistance of 30 mm or more and 150 mm or less. The above <1> ~ <6> 13. The cooling device according to claim 12 . <8> The humidity adjusting material is crepe paper or kraft paper. The above <1> ~ <7> 13. The cooling device according to claim 12 .

[0137] <9> The cooling body is A first sheet that faces the wearer's skin when worn; a second sheet disposed opposite to the first sheet via the water retaining layer and the humidity adjusting material; having The first sheet is configured to function as the intermediate sheet, The second sheet is configured to function as the non-interleaving sheet. The above <1> ~ <8> 13. The cooling device according to claim 12 . <10> The second sheet has an air permeability of 300 sec / 100 mL or less at least in a region facing the humidity adjusting material. The above <9> The cooling device described in <11> The first sheet is poorly air-permeable or non-air-permeable. The above <9> or <10> The cooling device described in

[0138] <12> The second sheet has a moisture permeability of 2000 g / m at least in an area facing the humidity adjusting material. 2 - 24 hours or more The above <9> ~ <11> 13. The cooling device according to claim 12 . <13> The first sheet has low moisture permeability or moisture impermeability. The above <9> ~ <12> 13. The cooling device according to claim 12 . <14> The first sheet is waterproof. The above <9> ~ <13> 13. The cooling device according to claim 12 . <15> The first sheet has a water resistance of 300 mm or more at least in the area between the wearer's eyes and the water retaining layer. The above <9> ~ <14> 13. The cooling device according to claim 12 .

[0139] <16> The main body portion is An inner sheet that faces the wearer's skin when worn; an outer sheet disposed opposite the inner sheet via the cooling body; having The inner sheet is configured to function as the interposing sheet, The outer sheet is configured to function as the non-intervening sheet. The above <1> ~ <15> 13. The cooling device according to claim 12 . <17> The outer sheet has an air permeability of 30,000 sec / 100 mL or less at least in the region facing the humidity adjusting material. The above <16> The cooling device described in <18> The outer sheet has a moisture permeability of 2000 g / m at least in the region facing the humidity adjusting material. 2 - 24 hours or more The above <16> or <17> The cooling device described in

[0140] <19> The inner sheet has a basis weight of 1 g / m 2 That's all. The above <16> ~ <18> 13. The cooling device according to claim 12 . <20> The inner sheet has a basis weight of 80 g / m 2 is less than or equal to The above <16> ~ <19> 13. The cooling device according to claim 12 . <21> The outer sheet has a basis weight of 10 g / m 2 That's all. The above <16> ~ <20> 13. The cooling device according to claim 12 . <22> The outer sheet has a basis weight of 200 g / m 2 is less than or equal to The above <16> ~ <21> 13. The cooling device according to claim 12 .

[0141] <23> The main body portion is A vertical center line that divides the main body in a width direction; A first panel portion that constitutes one side in the width direction with respect to the vertical center line; a second panel portion constituting the other side in the width direction with respect to the vertical center line; It has The cooling body is provided on each of the first panel portion and the second panel portion. The above <1> ~ <22> 13. The cooling device according to claim 12 . <24> The main body is configured such that, when the first panel portion and the second panel portion are unfolded about the vertical center line, the first panel portion and the second panel portion are arranged in parallel in a planar shape. The above <23> The cooling device described in <25> The main body portion is An upper edge portion located on the wearer's forehead side when worn; A lower edge portion located on the wearer's nose side when worn; An upper slit formed from the upper edge portion toward the lower edge portion; A lower slit formed from the lower edge toward the upper edge; It has The upper slit and the lower slit are formed on a vertical center line that divides the main body in the width direction. The above <1> ~ <24> 13. The cooling device according to claim 12 .

[0142] <26> The water retention layer has a water retention material provided on the humidity adjusting material and water retained in the water retention material, The water-retaining material is one or more selected from carbon components, fiber materials, water-absorbent powders, etc. The above <1> ~ <25> 13. The cooling device according to claim 12 . <27> The water-retaining layer has an initial water content of 1 cm 2 0.04mL to 0.40mL per The above <1> ~ <26> 13. The cooling device according to claim 12 . <28> The water retention layer has an initial water content of 1% by mass or more of the maximum water absorption amount of the water retention layer. The above <1> ~ <27> 13. The cooling device according to claim 12 . <29> The cooling device is stored in a sealed state in a waterproof package, The water-retaining layer retains water when the cooling device is sealed in the packaging body. The above <1> ~ <28> 13. The cooling device according to claim 12 .

[0143] <30> The mask further includes ear hooks provided at both ends of the main body in the width direction, and capable of holding the main body on the wearer's face so that the main body covers at least the eyes and / or the areas around the eyes of the wearer's face. The above <1> ~ <29> 13. The cooling device according to claim 12 . <31> The ear hook portion is provided at an incline toward the lower side of the main body portion when the ear hook portion is worn with respect to the width direction of the main body portion. The above <30> The cooling device described in <32> The 90-minute average temperature at the part of the cooling device that comes into direct or indirect contact with the wearer's eyes and / or the area around the eyes is 30°C or less. The above <1> ~ <31> 13. The cooling device according to claim 12 . <33> The 90-minute average relative humidity in the area where the cooling body is not in direct or indirect contact with the wearer's eyes and / or the area around the eyes is 40% or more and 85% or less. The above <1> ~ <32> 13. The cooling device according to claim 12 . [Explanation of symbols]

[0144] 1: Cooling equipment 2: Intervening sheet 3: Non-intervening sheet 10: Main body 10A: First panel section 10B: Second panel section 11: Inner sheet 12: Outer sheet 13: Upper edge 14: Lower edge 15: Upper slit 16: Lower slit 20: Cooling body 21: Humidity adjustment material 22: Water retention layer 23: First sheet 24: Second sheet 30: Ear hook 31: Ear hook body 31a: Top 31b: Bottom 31c: Open edge 31d: Joint edge 32: Ear holes 50: Joint 100: Vertical center line 200: Packaging

Claims

1. A cooling device comprising a main body portion that covers at least the eyes and / or the area around the eyes of a wearer's face, and a cooling body provided on the main body portion, The cooling body has a water-retaining layer that retains or can retain water, The cooling body is disposed on the main body portion so that at least a portion of the cooling body is in direct or indirect contact with the wearer's eyes and / or the vicinity of the eyes when the cooling body is worn; The cooling device is an intervening sheet disposed between the wearer's eyes and / or the area around the eyes and the moisture retaining layer when worn; A non-interposed sheet having breathability having the water retaining layer is disposed between the intervening sheet and the non-intervening sheet, The cooling body has a humidity adjusting material disposed between the water retaining layer and the non-interposed sheet, The humidity adjusting material is configured to absorb moisture from the surface on the water retaining layer side and to volatilize the absorbed moisture from the surface on the non-interposed sheet side. Cooling equipment.

2. The humidity adjusting material has an air permeability of 300 sec / 100 mL or less at least in a region facing the water retaining layer. The cooling device according to claim 1 .

3. The humidity adjusting material has a water evaporation rate of 50% or more. The cooling device according to claim 1 or 2.

4. The cooling body is A first sheet that faces the wearer's skin when worn; a second sheet disposed opposite to the first sheet via the water retaining layer and the humidity adjusting material; having The first sheet is configured to function as the intermediate sheet, The second sheet is configured to function as the non-interleaving sheet. The cooling device according to any one of claims 1 to 3.

5. The second sheet has an air permeability of 300 sec / 100 mL or less at least in a region facing the humidity adjusting material. The cooling device according to claim 4.

6. The first sheet has low moisture permeability or moisture impermeability. The cooling device according to claim 4 or 5.

7. The main body portion is An inner sheet that faces the wearer's skin when worn; an outer sheet disposed opposite the inner sheet via the cooling body; having The inner sheet is configured to function as the interposing sheet, The outer sheet is configured to function as the non-intervening sheet. The cooling device according to any one of claims 1 to 6.

8. The main body portion is A vertical center line that divides the main body in half in a width direction; A first panel portion that constitutes one side in a width direction with respect to the vertical center line; a second panel portion constituting the other side in the width direction with respect to the vertical center line; It has The cooling body is provided on each of the first panel portion and the second panel portion. The cooling device according to any one of claims 1 to 7.

9. The water-retaining layer has an initial water content of 1 cm ２ 0.04mL or more and 0.40mL or less per The cooling device according to any one of claims 1 to 8.

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