Cooling equipment

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] Cooling devices capable of cooling at least the eyes of a wearer's face have been known for some time. For example, Patent Document 1 describes an eye mask in which a water-absorbing polymer is contained inside a bag-shaped eye mask body 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 by the water-absorbing polymer evaporates, the water vapor is released to the outside through the top sheet and heat is dissipated from the eye mask itself, thereby cooling the wearer's eyes and the area around the eyes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-028176 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-retaining capacity, they do not have an excellent ability to volatilize water. Therefore, the inventors have discovered that although the eye mask can cool the wearer's eyes and the area around the eyes for a long period of time, the cooling effect is low.

[0006] The present invention relates to a cooling device that can improve cooling of 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 that covers at least the eyes and / or the area around the eyes on 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 it comes into direct or indirect contact with the wearer's eyes and / or the area around the eyes when worn, and the cooling device comprises 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 breathable non-intervening sheet, 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 facing the water-retaining layer and volatilize the absorbed moisture from the surface facing the non-intervening sheet. [Effects of the Invention]

[0008] The cooling device of the present invention can improve the cooling effect on the wearer's eyes and / or the area around the eyes. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram showing a cooling device according to an embodiment of the present invention; [Figure 2] 1 is a schematic cross-sectional view of a cooling device according to an embodiment of the present invention. [Figure 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. 3. [Figure 5] FIG. 5(a) is a diagram showing the state when the ear hooks are pulled, and FIG. 5(b) is a diagram showing the state when the ear hooks are worn. [Figure 6] FIG. 2 is a diagram showing a state in which the cooling device according to the present embodiment is sealed in a package. DETAILED DESCRIPTION OF THE INVENTION

[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. Furthermore, 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 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 10, and ear hooks 30 provided on both widthwise ends of the main body 10. Note that Fig. 1 is a plan view of the main body 10 in an unfolded state with the surface (outer surface) away from the wearer's eyes facing upward.

[0012] The cooling device 1 according to this embodiment also includes 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 breathable non-intervening sheet 3. The water-retaining layer 22 is placed between the intervening sheet 2 and the non-intervening sheet 3.

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

[0014] In this specification, the "width direction" refers to the direction that corresponds to the arrangement direction of the first panel portion 10A and the second panel portion 10B, which will be described later, when the main body portion 10 is viewed from above (i.e., the state shown in FIG. 1). The "both widthwise ends of the main body portion 10" refer to the end of the first panel portion 10A on the ear hook portion 30 side and the end of the second panel portion 10B on the ear hook portion 30 side.

[0015] [Main body configuration] As shown in Figure 2, the main body 10 comprises 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 that is arranged opposite the inner sheet 11 across the cooling body 20, and is formed in a sheet shape as a whole.

[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 limiting, 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 this adhesive. A hot-melt adhesive is preferably used as the adhesive, but this is not limited thereto, and various known fixing means can be used. For example, adhesives other than hot-melt adhesives, sewing, heat fusion, etc. are possible, but are not limited thereto as long as they can be fixed.

[0019] It is also possible to adopt a configuration in which adhesive is applied to the inner sheet 11 instead of, or in addition to, the outer sheet 12. 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 element 20 can be inserted and removed.

[0020] [Breathability of the main body] Whether the inner sheet 11 functioning as the intervening sheet 2 is breathable or not is preferably determined in relation to the first sheet 23 described below of the cooling body 20. In this embodiment, since the first sheet 23 is breathable or non-breathable, the inner sheet 11 may be breathable, breathable or non-breathable.

[0021] The outer sheet 12, which functions as the non-intervening sheet 3, is breathable. From the viewpoint of promoting evaporative heat dissipation due to water evaporation, 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, still more preferably 200 sec / 100 mL or less, even more preferably 100 sec / 100 mL or less, still 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 of ​​the cooling body 20 facing the humidity adjusting material 21 via the second sheet 24 described below. 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 passes through a material at a constant pressure of 6.42 cm. 2The air permeability is defined as the time it takes for air to pass through an area of ​​10000 s / 100 mL. Therefore, a large air permeability value means that it takes longer for air to pass through, i.e., low breathability. Conversely, a small air permeability value means that air permeability is high. Thus, there is an inverse relationship between the air permeability value and the level of breathability. Air permeability can be measured using an Oken air permeability meter. In this specification, an air permeability of less than 30,000 s / 100 mL is defined as "breathable," an air permeability of 30,000 s / 100 mL or more but less than 80,000 s / 100 mL is defined as "hardly breathable," and an air permeability of 80,000 s / 100 mL or more is defined as "non-breathable."

[0024] [Breathability of the main body] Whether the inner sheet 11 is moisture permeable or not is preferably determined in relation to the first sheet 23. In this embodiment, since the first sheet 23 is either moisture-impermeable or moisture-non-permeable, the inner sheet 11 may be moisture-permeable, moisture-impermeable, or moisture-non-permeable.

[0025] The outer sheet 12 has moisture permeability. The moisture permeability of the outer sheet 12 is set to 2000 g / m2 from the viewpoint of promoting evaporation and heat dissipation due to water evaporation. 2 24 hours or more is preferable, 2500g / m 2 24 hours or more is more preferable, and 3000g / m 2 It is more preferable that the time is 24 hours or more.

[0026] It is sufficient that the outer sheet 12 has the above-mentioned moisture permeability in at least the area facing the humidity adjusting material 21 via the second sheet 24. In other words, the other areas may not have 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 expressed as a percentage of water vapor passing through a material. 2The moisture permeability is defined as the amount of moisture that permeates per 100g / m² in 24 hours. Therefore, a large moisture permeability value means high moisture permeability, and conversely, a small moisture permeability value means low moisture permeability. In this specification, 100g / m² is used. 2 Breathability is defined as moisture permeability for 24 hours or more, and is 100g / m 2 Less than 24 hours: 30g / m 2 Breathability of 24 hours or more is defined as "low breathability," and 30 g / 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 water penetration. Waterproofness can be evaluated by the water resistance, which can be measured by JIS L 1092 A method. This water resistance is the number of 1 cm that can withstand the penetration of water. 2 The water resistance rating is defined as the height (mm) of a water column per unit area. Therefore, a larger water resistance rating indicates higher waterproofness, and conversely, a smaller water resistance rating indicates lower waterproofness. In this specification, a water resistance rating of 300 mm or more is defined as "waterproof," and a water resistance rating 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 viewpoint of achieving a balanced increase in the sheet thickness and strength, and from the viewpoint of achieving a good fit to the wearer's eyes and / or the area around the eyes. From these viewpoints, the basis weight of the inner sheet 11 is 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 It is even more preferable that the content is 15 g / m or more. 2 It is even more preferable that the content 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 element 20, facilitating evaporation of water held in the humidity adjusting material 21 and water retaining layer 22 of the cooling element 20, which will be described later, and making it easier for the wearer to feel cool. From these viewpoints, the basis weight of the inner sheet 11 is preferably 80 g / m 2 Preferably, it is 60 g / m or less. 2 More preferably, it is 40 g / m or less. 2 More preferably, it is 30 g / m or less. 2 Even more preferably, the following:

[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, maintaining the shape of the main body 10 stably, stably holding the cooling body 20, and preventing the cooling body 20 from being visible through the sheet, which would impair 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 content 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 Preferably, it is 160 g / m or less. 2 More preferably, it is 120 g / m or less. 2More preferably, it is 80 g / m or less. 2 Even more preferably, the following:

[0034] [Main body material] The materials for the inner sheet 11 and the outer sheet 12 can be those conventionally used in the technical field of cooling devices that cover the wearer's eyes and / or the area around the eyes. Examples of materials that can be used include nonwoven fabrics, woven fabrics, fiber sheets such as paper, resin foam sheets, metal sheets, and combinations thereof. Among these, nonwoven fabrics are preferred from the standpoints of ease of processing and economic efficiency. The fiber material for the nonwoven fabric is preferably composed of one or more fibers selected from the group consisting of polyesters such as PET (polyethylene terephthalate); polyolefins such as PE (polyethylene), PP (polypropylene), and ethylene-propylene copolymers; rayon; and cotton. Nonwoven fabrics can be manufactured using one or more of the above-mentioned fibers by methods such as air-through, spunbonding, needle-punching, meltblown, carding, heat fusion, hydroentanglement, and solvent bonding, and may have a single-layer or multilayer structure. The nonwoven fabric may be chemically treated depending on the purpose.

[0035] Furthermore, 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 single-layer or multi-layer, or a multi-layer structure consisting of two or more overlapping sheet materials. Furthermore, the inner sheet 11 and the outer sheet 12 may 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 providing shape retention to the cooling device, 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 designed for a comfortable feel against the skin. Furthermore, the inner sheet 11 and the outer sheet 12 may be colored in any color or may have any pattern (design) printed on them. This configuration improves the texture and style, allowing the cooling device to be tailored to the user's preferences.

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

[0037] The vertical center line 100 is a line extending perpendicular to the width direction at the center of the width direction of the main body part 10 when the main body part 10 is unfolded so that the side 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 device 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 device 1 is worn. The first panel portion 10A and the second panel portion 10B are each formed in a substantially square shape, and the peripheral edges of both widthwise ends of the main body portion 10 are 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 bilaterally symmetrical shapes with respect to the vertical center line 100, and are integrally continuous at the vertical center line 100. In other words, the main body 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 bilaterally symmetrically. Note that instead of a configuration in which the first panel portion 10A and the second panel portion 10B are integrally formed 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.

[0040] The first panel portion 10A and the second panel portion 10B are not connected near an upper edge portion 13 (described later) or a lower edge portion 14 (described later) of the vertical center line 100, but are connected only at the vertical center line 100. As a result, when the first panel portion 10A and the second panel portion 10B are unfolded about the vertical center line 100, the main body portion 10 assumes a planar shape in which the first panel portion 10A and the second panel portion 10B are parallel to each other in the planar direction. That is, as shown in FIG. 2, the main body portion 10 is configured so 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 "connected" here 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 separately and then mechanically connected.

[0041] 1, the main body 10 has an upper edge 13 that is located on the forehead side of the wearer when the cooling device 1 is worn, a lower edge 14 that is 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, and a lower slit 16 formed from the lower edge 14 toward the upper edge 13. 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] Upper slit 15 is a generally triangular cutout that tapers from upper edge 13 toward lower edge 14. Upper slit 15 is configured to be positioned between the eyebrows of the wearer or in the vicinity thereof when cooling device 1 is worn.

[0043] The lower slit 16 is a generally inverted triangular cutout that tapers from the lower edge 14 toward the upper edge 13. The tip of the lower slit 16 is formed in an arc shape that curves toward the upper edge 13. The lower slit 16 is configured to be positioned on or near the bridge of the wearer's nose when the cooling device 1 is worn.

[0044] Since main body 10 has upper slits 15 and lower slits 16, the upper slits 15 and lower slits 16 increase the freedom of movement of main body 10, thereby improving the fit of cooling element 20 to the wearer's eyes and / or the area around the eyes. This has the advantage of making it easier to transfer heat held by the wearer's eyes and / or the area around the eyes to cooling element 20, improving the cooling performance for the wearer's eyes and / or the area around the eyes, and effectively generating evaporative heat dissipation associated with the evaporation of water held in humidity adjusting material 21 and water retaining layer 22 of cooling element 20.

[0045] The shapes of the upper edge 13, lower edge 14, upper slit 15, and lower slit 16 of the main body 10 are adjusted as appropriate to make it easier to fit around 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, a shape with a localized convex portion or curved portion, etc. For example, in the above-described 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] Before using the cooling device 1, the main body 10 having the above configuration can be made compact 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 state (see FIG. 6). On the other hand, when using the cooling device 1, the main body 10 is opened from the edge opposite the vertical center line 100, and is worn so that the inner side of the folded main body portion 10 faces the wearer (see FIG. 5).

[0047] Furthermore, the main body 10 is configured to cover the eyes and the area surrounding the eyes on the wearer's face when the cooling device 1 is worn. In this specification, "the area surrounding 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 surrounding 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 surrounding 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 device 1 is worn. Furthermore, 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 this is not limited thereto, and the main body 10 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. Furthermore, 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 device 1 is worn, and a second sheet 24 that is arranged to face the first sheet 23 via the water-retaining layer 22 and 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] The humidity adjusting material 21 is configured to absorb moisture from the surface on the water retention layer 22 side and volatilize the absorbed moisture from the surface on the non-interposed sheet 3 (outer sheet 12 and 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-retaining 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. 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 the percentage of how much water a material can retain. A high water retention rate indicates that the material has a high water absorption capacity, while a low water retention rate indicates that the material has a low water absorption capacity.

[0055] The water retention rate can be calculated, for example, according to the item "6.9.2 Water retention rate" of JIS L 1913:2010, using the following formula. m = (m2 - m1) / m1 × 100 Here, m is the water retention rate (%) of the humidity adjusting material 21, m1 is the mass (mg) of the test piece under standard conditions, and m2 is the mass (mg) of the test piece after wetting and dripping water onto it. If it is not possible to obtain 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 those dimensions is obtained.

[0056] [Water evaporation rate of humidity control material] The humidity adjusting material 21 preferably has a water evaporation rate, measured by the following steps (1) to (5), of 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 50mm x 50mm test piece 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 using 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 evaporation capacity," calculate the water evaporation rate using the following formula. Water volatilization rate = “Water volatilization amount” / “Water retention amount” x 100

[0057] Here, the water evaporation rate is a ratio that expresses the amount of water that a component evaporates. A large value of the water evaporation rate indicates that the component has a high ability to evaporate water, and a small value of the water evaporation rate indicates that the component has a low ability to evaporate water.

[0058] For samples that decompose in water, the measurement can be carried out, for example, as follows: A nylon woven bag (80 mm x 80 mm) with a 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. Water is added so that the mesh bag does not come into direct contact with the bag, and the sample is immersed for 15 minutes to allow it to swell sufficiently. After that, the sample is drained for 1 minute and weighed. The water evaporation rate is then calculated using a moisture meter in the same way.

[0059] The humidity adjusting material 21 having the above water retention rate and water evaporation rate preferably has a value of water retention rate [%] x water evaporation rate [%] / 100 of 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 water from the surface on the water retention layer 22 side and releasing a large amount of water from the surface on the non-interposed sheet 3 side.

[0060] [Breathability of humidity control material] The humidity adjusting material 21 is breathable. From the viewpoint of allowing water vapor released from the water retaining layer 22 to pass through and dissipating heat from the cooling body 20, the air permeability of the humidity adjusting material 21 is preferably 300 seconds / 100 mL or less, more preferably 100 seconds / 100 mL or less, even more preferably 80 seconds / 100 mL or less, and even more preferably 50 seconds / 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 not have air permeability.

[0062] The humidity adjusting material 21 has breathability, which allows water vapor released from the water retention layer 22 to pass through, which has the advantage of further facilitating the release of water vapor to the non-interposed sheet 3 (outer sheet 12 and second sheet 24) side. As a result, the dissipation of heat held by the cooling body 20 can be promoted, 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. From the viewpoint of allowing water vapor released from the water retaining layer 22 to pass through and dissipating heat from the cooling body 20, the moisture permeability of the humidity adjusting material 21 is set to 3000 g / m 2 24 hours or more is preferable, 3500g / m 2 24 hours or more is more preferable, and 4000g / m 2 It is more preferable that the time 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 not have moisture permeability.

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

[0066] [Rigidity of humidity adjusting 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 maintain the shape of the cooling body 20. As a result, productivity can be improved 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 even more 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 Method A (45° cantilever method) of JIS L 1096:2010, 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 beveled at 45° so that the short side of the test piece is aligned with the scale baseline. (2) Using an appropriate method, gently slide the test piece in the direction of the inclined surface, and when the center point of one end of the test piece comes into contact with the inclined surface, read the position of the other end of the test piece on the scale. (3) The bending resistance is expressed as the length (mm) of the test piece moved, and is measured only on the vertical surface of the five test pieces. (4) Calculate the average of the vertical values ​​and round it 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 adjusting material] Examples of materials for the humidity adjusting material 21 include crepe paper and kraft paper. Among these, it is preferable to use crepe paper from the viewpoint of absorbing a large amount of moisture from the water retaining layer 22 and improving the evaporation 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 are no particular restrictions on the type of water retention material as long as it is capable of retaining water. Examples of water retention materials include one or more types selected from carbon components, fibrous materials, and water-absorbent powders.

[0070] The carbon component has water-retaining ability, and for example, one or more selected from activated carbon, acetylene black, and graphite can be used. Furthermore, as the fiber material, hydrophilic fibers, especially cellulose fibers, are preferably used. As the cellulose fibers, chemical fibers (synthetic fibers) and natural fibers can be used. Furthermore, other water-absorbing powders include one or more selected from vermiculite, sawdust, silica gel, calcium silicate, zeolite, pulp powder, and water-absorbing polymers.

[0071] Examples of water-absorbent polymers include hydrophilic polymers having a crosslinked structure that can absorb and retain liquids 20 times or more their own weight. The shape of the water-absorbent polymer may be any of spherical, block, grape-bunch, and fibrous. The mass-average particle size of the water-absorbent 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-absorbent 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-absorbent polymer is measured by laser diffraction.

[0072] Specific examples of water-absorbent polymers include one or more selected from the group consisting of starch, crosslinked carboxymethylated cellulose, polymers or copolymers of acrylic acid or alkali metal acrylates, polyacrylic acid and its salts, and polyacrylate graft polymers. Among these, polymers or copolymers of acrylic acid or alkali metal acrylates, polyacrylic acid and its salts, and polyacrylate graft polymers are preferred because they make it easier to maintain the amount of water carried within a specific range.

[0073] Examples of the water-retaining 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 on the humidity adjusting material 21 and arranged in a single layer, or (c) a mode having a laminated 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, alkaline earth metal, etc.), and may also contain 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 retentive layer 22 according to this embodiment is configured to retain water. Specifically, the water retentive layer 22 is configured to retain water when the cooling element 20 is sealed in the packaging 200. However, the configuration of the water retentive layer 22 is not limited to this. For example, the water retentive layer 22 may be configured to be able to retain water. In other words, the water retentive layer 22 may not retain water when the cooling element 20 is sealed in the packaging 200, but may be configured so that the water retentive layer 22 retains water by being impregnated with water when the cooling device 1 is in use.

[0076] The initial content of water retained in the water retention layer 22 is preferably 1% by mass or more of the maximum water absorption of the water retention layer 22, from the viewpoint of increasing the cooling effect of the cooling device 1 when first worn and from the viewpoint of fully exerting the high cooling effect of the humidity adjusting material 21. Furthermore, 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 water content 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 the maximum water absorption of a water-retaining layer] The maximum water absorption capacity of the water-retaining layer 22 can be measured, for example, by the following method. First, a 250-mesh (61 μm) nylon woven bag (100 mm × 150 mm) and the sample are weighed, and the tare weight of the mesh bag and the sample are measured. Next, the sample is placed in the mesh bag, placed upright in a 300 mL beaker, and 300 mL of ion-exchanged water is added so that the mesh bag does not come into direct contact with the bag. The sample is then immersed for 30 minutes to allow it to fully swell. The sample is then hung for 10 minutes to drain, and weighed to two decimal places on an analytical balance. The maximum water absorption capacity is then calculated using the "total weight of the mesh bag," "tare weight of the mesh bag," and "weight of the sample" calculated above, using the following formula: "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 opening the packaging material such as the oxygen barrier bag) is 2 It is preferable that the volume is 0.04 mL or more per 1 cm 2 More preferably, it is 0.08 mL or more per cm 2 It is more preferable that the amount is 0.10 mL or more per 1 cm. 2 It is preferable that the volume is 0.40 mL or less per cm 2More preferably, it is 0.30 mL or less per cm 2 It is more preferable that the amount is 0.25 mL or less per unit volume.

[0079] [Definition of initial water content] The initial water content in the water retentive layer 22 of the cooling body 20 is defined by the following procedure. That is, first, the packaging is opened, cooling device 1 is removed from the packaging, and the portion of cooling device 1 containing water, i.e., cooling body 20, is removed, and then 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 packaging is opened, the moisture meter begins measuring cooling body 20. In the above method, the difference between the weight before drying and the weight after drying when heated and dried at 70°C for 10 hours using a moisture meter is defined as the initial water content.

[0080] [Configuration 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. However, the shape of the first sheet 23 and the second sheet 24 is not limited to this 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 edges 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. 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, which functions as the intervening sheet 2, may be breathable, breathably or non-breathable. However, it is preferable that the first sheet 23 be breathably or non-breathable from the viewpoint of defining the vapor 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 having poor or no air permeability has the advantage of increasing the degree of freedom in designing the inner sheet 11. In other words, when the first sheet 23 has poor or no air permeability, there is no need to consider the air 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 wearing the cooling device 1 and a function to improve the cooling performance of the cooling device 1.

[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 water evaporation, 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-mentioned 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 or no moisture permeability has the advantage of increasing the degree of freedom in designing the inner sheet 11. In other words, when the first sheet 23 has low 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 wearing the cooling device 1 and a function to improve the cooling performance of the cooling device 1.

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

[0090] It is sufficient that the second sheet 24 has the above-mentioned moisture permeability at least in the area facing the humidity adjusting material 21. In other words, the other areas may not have moisture permeability.

[0091] [Waterproofness 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. If 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 be waterproof.

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

[0095] In this embodiment, the cooling element 20 has been described as having the first sheet 23 and the second sheet 24, but this is not limited thereto and the cooling element 20 may have only one of the first sheet 23 and the second sheet 24. Alternatively, the cooling element 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, published by The Chemical Daily) or may be added to any desired location within the scope that does not impede the effects of the present invention. Specific examples include terpene hydrocarbons such as myrcene, farnesene, pinene, limonene, camphene, phellandrene, terpinene, terpinolene, p-cymene, cedrene, and caryophyllene; aldehydes such as hexyl cinnamic 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 component of cooling body] To provide an even more cooling sensation, cooling agent 20 can be blended or added to any desired location, provided that the effect of the invention is not impaired. Among the temperature-sensitive TRP channels present in the body, those containing an agonist that acts on TRPM8, a cold receptor, are preferred. Examples include menthols such as L-menthol and DL-menthol, menthonediol, cineole, menthyl glyceryl ether, menthone glycerin acetal, butylcyclohexanone, isopulegol, trimethylisopropylbutanamide, menthoxypropanediol, and camphor. Plant and essential oils containing TRPM8 agonists, such as peppermint oil, spearmint oil, and eucalyptus oil, may also be used. These may be used alone or in combination. Among these, from the viewpoints of comfort, efficacy, 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 element 20 is arranged in the main body 10 so 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 element 20 is arranged in the main body 10 so 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 portion of the cooling element 20 is described as coming into 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 portion of the cooling element 20 comes into direct or indirect contact with the area around the wearer's eyes. In other words, the cooling element 20 may have an opening in the area facing the wearer's eyes when the cooling device 1 is worn. Furthermore, at least a portion of the cooling element 20 may come into 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 unit 10A and the second panel unit 10B, respectively, so as to be symmetrical with respect to the vertical center line 100. In the illustrated example, two cooling bodies 20 are provided, one on each of the first panel unit 10A and the second panel unit 10B.

[0101] In the present embodiment, the first panel portion 10A and the second panel portion 10B are described as each having one cooling body 20, but this is not limited thereto, and for example, two cooling bodies 20 may be provided in each of the first panel portion 10A and the second panel portion 10B, or one cooling body 20 may be provided for the entire main body portion 10. Furthermore, when multiple cooling bodies 20 are provided, the cooling characteristics of the multiple 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 so that the main body 10 can be held against the wearer's face so that the main body 10 covers at least the eyes and / or the areas around the eyes (see FIG. 5). Specifically, the ear hooks 30 are configured so that the main body 10 can be held against the wearer's face so that the main body 10 covers at least the eyes and the areas 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 is covered by the main body portion 10. The ear hook portion 30 may also 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 hooking parts 30 are folded and stored inside the main body part 10 before use of the cooling tool 1. Furthermore, as shown in Figs. 1 and 5, the ear hooking parts 30 are deployed outward in the width direction of the main body part 10 when the cooling tool 1 is in use.

[0105] 1, the ear hooks 30 are inclined downward relative to the width direction of the main body 10 when worn. Each ear hook 30 is joined to the main body 10 by a joining portion 50 that is 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 30 are connected to each other by another material such as an adhesive (e.g., a hot melt adhesive), the other material such as the adhesive functions as the joint 50. (2) When the main body part 10 and the ear hook part 30 are joined to each other without any other components, such as when the main body part 10 and the ear hook part 30 are connected to each other by thermal fusion, the joining area of ​​the main body part 10 where the ear hook part 30 is joined and the joining area of ​​the ear hook part 30 where the main body part 10 is joined each function as joining part 50.

[0107] 1, each ear hook 30 has an ear hook main body 31 and an ear hook hole 32 through which the wearer's ear can be inserted. The ear hook main 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, substantially rectangular shape. Specifically, the upper side 31a and the lower side 31b taper from the joining edge 31d toward the open edge 31c and are curved where they connect 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 incision line formed from near the joining edge 31d of the ear hook main body 31 to near the open edge 31c of the ear hook main 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 linear incision line or an opening that can be inserted through the wearer's ear.

[0110] The ear hooks 30 may be made of the same material as the main body 10 or a different material. However, to ensure a good fit of the main body 10, a stretchable material is preferred, and a material that easily stretches in the width direction of the main body 10 is preferable. In this embodiment, the ear hooks 30 are preferably made of nonwoven fabric, and more preferably a stretchable nonwoven fabric. To further enhance stretchability, the ear hooks 30 may have a multilayer structure in which an elastomer film is laminated onto a nonwoven fabric. Furthermore, to ensure good bonding with the main body 10, the ear hooks 30 preferably contain a thermoplastic resin as a constituent fiber. Furthermore, to facilitate ease of processing, polypropylene is more preferable. The ear hooks 30 may further contain a thermoplastic resin other than polypropylene. 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 synthetic fibers made of urethane. This configuration allows the ear hooks 30 to efficiently exhibit flexibility and fit, while also providing sufficient strength during use of the cooling device 1.

[0111] The ear hooks 30 are not limited to the flat ear hooks described above, and any type of ear hook that is typically used to secure a cooling device can be used as long as it is capable of holding the main body 10 on the wearer's face. For example, various configurations are possible, such as elastic ear hooks or one or more bands spanning both widthwise ends of the first panel 10A and the second panel 10B. Furthermore, 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-described 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-impermeable or non-moisture-permeable, and the second sheet 24 and outer sheet 12 are configured to be breathable, it is possible to keep the 90-minute average temperature at or below 30°C in the areas of the cooling element 20 that come into direct or indirect contact with the wearer's eyes and / or the area around the eyes. It is also possible to maintain the 90-minute average relative humidity at or above 40% and below 85% in areas of the cooling element 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] The 90-minute average temperature and 90-minute average relative humidity can be measured using the following method. A hygro-temperature sensor is placed on the upper eyelid of a female human head model (151.24 mm wide, 206.82 mm deep, 233.01 mm high) created based on average female head data (latest data at the time of filing) manufactured by Digital Human Technology Co., Ltd., and secured with surgical tape. The cooling device 1 is then attached to the female human head model in a 30°C, 40% RH environment, and changes in temperature and humidity are measured every 10 seconds. The temperature and humidity sensor can be the SHT71 (manufactured by Sensirion).

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

[0117] When using the cooling device 1, the wearer first opens the packaging 200 and removes the cooling device 1 from the packaging 200. After removing the cooling device 1 from the packaging 200, the wearer opens the folded main body 10 from both widthwise ends and removes the pair of ear loops 30 from inside the main body 10. Then, as shown in FIG. 5( a), with the main body 10 placed over the wearer's eyes and the areas surrounding the eyes, the wearer pulls the ear loops 30 with their fingers and inserts their ears through the ear loop holes 32. By hooking the pair of ear loops 30 over the wearer's left and right ears in this way, the main body 10 can be held against the wearer's face so that the wearer's eyes and the areas surrounding the eyes are kept covered by the main body 10, as shown in FIG. 5( b).

[0118] In the cooling device 1 according to this embodiment, the water retaining layer 22 retains water when the cooling device 1 is sealed in the packaging 200, so there is no need to immerse the cooling device 1 in water after removing it from the packaging 200 to make the water retaining layer 22 retain water. This has the advantage that the cooling device 1 can be used simply by opening the packaging 200. Another advantage is that when only one cooling device 1 is sealed in the packaging 200, 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, thereby conducting heat 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] Furthermore, in the cooling device 1 according to this embodiment, the humidity adjusting material 21 absorbs moisture from the water retention layer 22, and therefore when the cooling element 20 is heated by the heat from the wearer's eyes and the area around 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-intervening sheet 3 (the second sheet 24 and the outer sheet 12) and is released to the outside of the cooling element 1. When the cooling element 20 is heated by the heat from the wearer's eyes and the area around the eyes, the water held in the water retention layer 22 also evaporates, and the water vapor released from the water retention layer 22 also passes through the humidity adjusting material 21 and the non-intervening sheet 3 and is released to the outside of the cooling element 1. Therefore, the heat conducted to the cooling element 20 from the wearer's eyes and the area around the eyes is dissipated from the cooling element 20.

[0121] Furthermore, because heat is conducted from the cooling element 20 to the outside air, the heat conducted from the wearer's eyes and the area around the eyes to the cooling element 20 is dissipated from the cooling element 20. Once heat is dissipated from the cooling element 20, heat is again conducted from the wearer's eyes and the area around the eyes to the cooling element 20, thereby further cooling the wearer's eyes and the area around the eyes. Due to this cooling mechanism, the cooling device 1 according to this embodiment can provide the wearer with a cooling sensation 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 a larger amount of water vapor passes through the non-interposed sheet 3 compared to when there is no humidity adjusting material 21. In other words, the amount of heat dissipation from the cooling body 20 can be increased, and a high cooling effect can be obtained.

[0123] [Advantages of the cooling device according to this embodiment] Thus, the cooling device 1 of this embodiment is a cooling device 1 comprising a main body 10 that covers at least the eyes and / or the area around the eyes on the wearer's face, and a cooling body 20 provided on the main body 10, wherein the cooling body 20 has a water-retaining layer 22 that holds or is capable of holding water, and the cooling body 20 is arranged on the main body 10 so that at least a portion of it comes into direct or indirect contact with the wearer's eyes and / or the area around the eyes when worn, and the cooling device 1 has an intervening sheet 2 that is arranged between the wearer's eyes and / or the area around the eyes and the water-retaining layer 22 when worn, and a breathable non-intervening sheet 3, wherein the water-retaining layer 22 is arranged between the intervening sheet 2 and the non-intervening sheet 3, and the cooling body 20 has a humidity adjusting material 21 that is arranged between the water-retaining layer 22 and the non-intervening sheet 3, and the humidity adjusting material 21 is configured to absorb moisture from the surface facing the water-retaining layer 22 and volatilize the absorbed moisture from the surface facing the non-intervening sheet 3.

[0124] In 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 toward the breathable non-interposed sheet 3, so that a greater amount of water vapor passes through the non-interposed sheet 3 compared to 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, thereby achieving a high cooling effect. In other words, the cooling effect on the wearer's eyes and / or the area around the eyes can be improved.

[0125] Furthermore, in the cooling device 1 according to this embodiment, the cooling element 20 has a first sheet 23 that faces the wearer's skin when worn, and a second sheet 24 that is arranged opposite the first sheet 23 via the water retention layer 22 and humidity adjusting material 21, the first sheet 23 being configured to function as the intervening sheet 2, and the second sheet 24 being configured to function as the non-intervening sheet 3. With a cooling device 1 configured in this way, the second sheet 24 functions as the breathable non-intervening sheet 3 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 the dissipation of heat conducted from the wearer's eyes and / or the area around the eyes to the cooling element 20 and improving the cooling effect on the wearer's eyes and / or the area around the eyes.

[0126] Furthermore, in the cooling device 1 according to this embodiment, the first sheet 23 is either hardly permeable to moisture or is non-permeable to moisture. A cooling device 1 having such a configuration has the advantage that the direction of vapor release from 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 opposite the inner sheet 11 across the cooling element 20, with the inner sheet 11 configured to function as the intervening sheet 2 and the outer sheet 12 configured to function as the non-intervening sheet 3. With a cooling device 1 configured in this way, 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 the dissipation of heat conducted from the wearer's eyes and / or the area around the eyes to the cooling element 20 and improving the cooling effect on the wearer's eyes and / or the area around the eyes.

[0128] Furthermore, in the cooling device 1 according to this embodiment, the main body 10 has a vertical centerline 100 that divides the main body 10 in half in the width direction, a first panel 10A that forms one side of the vertical centerline 100 in the width direction, and a second panel 10B that forms the other side of the vertical centerline 100 in the width direction, and the cooling element 20 is provided on each of the first panel 10A and the second panel 10B. A cooling device 1 having such a configuration can improve the fit of the cooling element 20 to the wearer's eyes and / or the area around the eyes. This promotes heat conduction from the wearer's eyes and / or the area around the eyes to the cooling element 20 and promotes evaporation of moisture absorbed by the humidity adjusting material 21, thereby advantageously improving the cooling effect on 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] Furthermore, 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 relative 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 clear from the claims that the above-mentioned modifications are included within the scope of the present invention.

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

[0134] <1> A cooling device comprising a main body 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, The cooling body has a water-retaining layer that retains or is capable of retaining water, the cooling body is disposed on the main body portion so 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 worn; The cooling tool is an intervening sheet that is placed between the wearer's eyes and / or the area around the eyes and the moisture retaining layer when worn; A breathable non-interposed sheet and 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 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 seconds / 100 mL or less at least in the region facing the water retaining layer. The aforementioned <1> The cooling device described in <3> The humidity adjusting material has a moisture permeability of at least 3000 g / m2 in the region facing the water retaining layer. 2 24 hours or more The aforementioned <1> or <2> The cooling device described in <4> The humidity adjusting material has a water evaporation rate of 50% or more. The aforementioned <1> ~ <3> The cooling device according to any one of the preceding claims.

[0136] <5> The moisture retention rate of the humidity adjusting material is 80% or more. The aforementioned <1> ~ <4> The cooling device according to any one of the preceding claims. <6> The humidity adjusting material has a value of 50 or more and 500 or less, calculated by multiplying the water retention rate [%] of the humidity adjusting material by the water evaporation rate [%] of the humidity adjusting material / 100. The aforementioned <1> ~ <5> The cooling device according to any one of the preceding claims. <7> The bending resistance of the humidity adjusting material is 30 mm or more and 150 mm or less. The aforementioned <1> ~ <6> The cooling device according to any one of the preceding claims. <8> The humidity adjusting material is crepe paper or kraft paper. The aforementioned <1> ~ <7> The cooling device according to any one of the preceding claims.

[0137] <9> The cooling body is a first sheet facing the wearer's skin when worn; a second sheet disposed so as to face the first sheet via the water retention layer and the humidity adjusting material; and the first sheet is configured to function as the interposing sheet; The second sheet is configured to function as the non-intervening sheet. The aforementioned <1> ~ <8> The cooling device according to any one of the preceding claims. <10> The second sheet has an air permeability of 300 sec / 100 mL or less at least in the region facing the humidity adjusting material. The aforementioned <9> The cooling device described in <11> The first sheet is poorly breathable or non-breathable. The aforementioned <9> or <10> The cooling device described in

[0138] <12> The second 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 aforementioned <9> ~ <11> The cooling device according to any one of the preceding claims. <13> The first sheet has low moisture permeability or moisture-impermeability. The aforementioned <9> ~ <12> The cooling device according to any one of the preceding claims. <14> The first sheet is waterproof. The aforementioned <9> ~ <13> The cooling device according to any one of the preceding claims. <15> The first sheet has a water resistance of 300 mm or more at least in the region between the wearer's eyes and the water retaining layer. The aforementioned <9> ~ <14> The cooling device according to any one of the preceding claims.

[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; and The inner sheet is configured to function as the interposing sheet, The outer sheet is configured to function as the non-intervening sheet. The aforementioned <1> ~ <15> The cooling device according to any one of the preceding claims. <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 aforementioned <16> The cooling device described in <18> The outer sheet has a moisture permeability of 2000 g / m at least in the area facing the humidity adjusting material. 2 24 hours or more The aforementioned <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 aforementioned <16> ~ <18> The cooling device according to any one of the preceding claims. <20> The inner sheet has a basis weight of 80 g / m 2 is The aforementioned <16> ~ <19> The cooling device according to any one of the preceding claims. <21> The outer sheet has a basis weight of 10 g / m 2 That's all The aforementioned <16> ~ <20> The cooling device according to any one of the preceding claims. <22> The outer sheet has a basis weight of 200 g / m 2 is The aforementioned <16> ~ <21> The cooling device according to any one of the preceding claims.

[0141] <23> The main body portion is a vertical centerline that divides the main body portion in half in the width direction; a first panel portion that constitutes one side in the width direction with the vertical center line as a boundary; a second panel portion that constitutes the other side in the width direction with the vertical center line as a boundary; It has The cooling body is provided on each of the first panel portion and the second panel portion. The aforementioned <1> ~ <22> The cooling device according to any one of the preceding claims. <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 assume a planar shape in which they are aligned in a planar direction. The aforementioned <23> The cooling device described in <25> The main body portion is An upper edge portion located on the forehead side of the wearer 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 half in the width direction. The aforementioned <1> ~ <24> The cooling device according to any one of the preceding claims.

[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 aforementioned <1> ~ <25> The cooling device according to any one of the preceding claims. <27> The water-retaining layer has an initial water content of 1 cm 2 per unit of blood is 0.04 mL or more and 0.40 mL or less. The aforementioned <1> ~ <26> The cooling device according to any one of the preceding claims. <28> The water retention layer has an initial water content of 1% by mass or more of the maximum water absorption of the water retention layer. The aforementioned <1> ~ <27> The cooling device according to any one of the preceding claims. <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. The aforementioned <1> ~ <28> The cooling device according to any one of the preceding claims.

[0143] <30> The mask further includes ear loops provided at both widthwise ends of the main body portion, and capable of holding the main body portion on the wearer's face so that the main body portion covers at least the eyes and / or the areas surrounding the eyes. The aforementioned <1> ~ <29> The cooling device according to any one of the preceding claims. <31> The ear hooks are inclined downward in the width direction of the main body when worn. The aforementioned <30> The cooling device described in <32> The average temperature for 90 minutes at the area that comes into direct or indirect contact with the wearer's eyes and / or the area around the eyes of the cooling device is 30°C or less. The aforementioned <1> ~ <31> The cooling device according to any one of the preceding claims. <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 aforementioned <1> ~ <32> The cooling device according to any one of the preceding claims. [Explanation of symbols]

[0144] 1: Cooling device 2: Intervening sheet 3: Non-interposed 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 edge 31c: Open edge 31d: Joint edge 32: Ear hook hole 50: Joint 100: Vertical center line 200: Packaging

Claims

1. A cooling device comprising a main body 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, the main body portion has an inner sheet that faces the wearer's skin when worn, and an outer sheet that is arranged to face the inner sheet across the cooling body, the cooling body is disposed between the inner sheet and the outer sheet and has a water retention layer that retains water, and a humidity adjusting material that is disposed between the water retention layer and the outer sheet, the cooling body is disposed in the main body portion so that at least a portion of the cooling body comes into contact with the wearer's eyes and / or the area around the eyes via the inner sheet when the wearer is wearing the mask; The outer sheet is breathable, the humidity adjusting material is configured to absorb moisture from a surface on the water retention layer side and volatilize the absorbed moisture from a surface on the outer sheet side, The inner sheet has a basis weight of 10 g / m 2 or more and 40 g / m 2 or less, The main body portion has an upper edge portion located on the forehead side of the wearer when worn, a lower edge portion located on the nose side of the wearer when worn, an upper slit formed from the upper edge portion toward the lower edge portion, and a lower slit formed from the lower edge portion toward the upper edge portion, The bending resistance of the humidity adjusting material is 50 mm or more and 100 mm or less, The humidity adjusting material has a value of water retention rate [%] x water evaporation rate [%] / 100 of 100 or more and 300 or less. Cooling equipment.

2. The humidity adjusting material has an air permeability of 300 seconds / 100 mL or less at least in the 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 disposed between the inner sheet and the water retaining layer; a second sheet disposed between the humidity adjusting material and the outer sheet; and The second sheet is breathable. The cooling device according to claim 1 or 2.

5. The second sheet has an air permeability of 300 seconds / 100 mL or less at least in the 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.

7. The humidity adjusting material has liquid permeability. The cooling device according to claim 1 or 2.

8. The main body portion is a vertical centerline that divides the main body portion in half in the width direction; a first panel portion that constitutes one side in the width direction with the vertical center line as a boundary; a second panel portion that constitutes the other side in the width direction with the vertical center line as a boundary; and It has The cooling body is provided on each of the first panel portion and the second panel portion. The cooling device according to claim 1 or 2.

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