JP2023114975A - Cooling device - Google Patents

Abstract

To provide a cooling device that has high convenience and that can prevent stuffiness and wetness around the eyes of a user.SOLUTION: A cooling device includes: a body part that covers at least the eyes in a user's face and a coolant provided in the body part. In the cooling device, at least the coolant is conserved in a state sealed in a waterproof package. The coolant sealed in the package has a water retention layer for holding water and is arranged in the body part so that, with the device worn, at least a part comes into contact directly or indirectly with the eyes of the user. At least one of the body part and the coolant, with the device worn, is provided with an intercalary sheet that is arranged between the eyes of the user and the water retention layer. One or a plurality of the intercalary sheets that is arranged between the eyes of the user and the water retention layer is, formed of air-permeable sheets.SELECTED DRAWING: Figure 1

Description

The present invention relates to cooling devices.

Conventionally, an eye mask covering the wearer's eyes has been used in order to alleviate eye fatigue, eye swelling, and the like. For example, in Patent Document 1, by using a non-woven fabric type cooling agent in which a non-woven fabric is adhered to the surface of a nylon film, the non-woven fabric absorbs dew condensation generated during cooling and water vapor contained in the atmosphere around the cooling agent. discloses an icing eye mask configured to prevent moisture from oozing out onto the surface of a cooling agent.

In addition, in Patent Document 2, a water-absorbent polymer is housed in a fitting body in which a surface side sheet and a contact side sheet are formed in a bag shape, and when used, after the fitting body is immersed in cold water, A body wear is disclosed that removes excess water by squeezing.

Utility Model Registration No. 3156195 JP-A-2002-28176

However, in the icing eye mask of Patent Document 1, moisture is transferred to the wearer's eyes from the nonwoven fabric that absorbs dew condensation generated during cooling and water vapor contained in the air around the cooling agent, and the wearer's eyes become wet and stuffy. , which may cause discomfort to the wearer. In addition, since the cooling agent of Patent Document 1 is used after being cooled in a refrigerator, there are also problems in that it cannot be used immediately and that it takes time and effort to refrigerate.

The body attachment of Patent Literature 2 has a problem that it takes time and effort to soak the body of the attachment in water and then squeeze out excess water during use. In addition, when the attachment body is immersed in water, the surface side sheet and the contact side sheet get wet, and the unsqueezed water makes the wearer's eyes wet or stuffy, which makes the wearer feel uncomfortable. may give

TECHNICAL FIELD The present invention relates to a cooling device that is highly convenient and that can prevent the wearer's eyes from getting stuffy and wet.

A cooling device comprising: a main body covering at least the eyes of a wearer's face; , the cooling body includes a water retaining layer that retains water in a state enclosed in the package, and is attached to the main body so that at least a portion of the cooling body comes into direct or indirect contact with the wearer's eyes when worn. At least one of the body portion and the cooling body includes an intervening sheet that is arranged between the eyes of the wearer and the water retaining layer when the cooling body is worn. The one or a plurality of intervening sheets arranged between and relate to cooling devices each made of an air-permeable sheet.

The cooling device according to the present invention is highly convenient, and can prevent the wearer's eyes from getting stuffy and wet.

Fig. 3 shows a cooling device according to an embodiment of the invention; 1 is a schematic cross-sectional view of a cooler according to this embodiment; FIG. It is a figure which shows the cooling body which concerns on this embodiment. 4 is a schematic cross-sectional view taken along line II-II' of FIG. 3; FIG. FIG. 5(a) is a diagram showing a state in which the holding portion is pulled, and FIG. 5(b) is a diagram showing a state in which the holding portion is mounted. FIG. 4 is a diagram showing a state in which a cooling tool is enclosed in a package; It is a schematic diagram which shows the apparatus which measures the amount of water vapor generation.

Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. In addition, the following embodiments do not limit the invention according to each claim, and not all combinations of features described in the embodiments are essential for the solution of the invention. . In addition, the drawings are schematic diagrams in which emphasis, omissions, and ratios are appropriately adjusted in order to illustrate the present invention, and may differ from actual shapes, positional relationships, and ratios.

[Overall configuration of cooling device]
As shown in FIG. 1, the cooling device 1 according to the present embodiment includes a body portion 2 covering at least the eyes of the wearer's face, and a cooling body 20 provided in the body portion 2. At least the cooling body 20 is waterproof. The cooling tool 1 is stored in a state of being enclosed in a package 200 having properties. The cooling device 1 according to this embodiment further includes one or more holding portions 30 for holding the body portion 2 in front of the wearer's face. Further, in the present embodiment, the entire cooling tool 1 is enclosed in the package 200 .

In this specification, the upper edge when the main body 2 is viewed from the plane (that is, the state of FIG. 1) is referred to as the "upper edge 7", and the lower edge in the same state is referred to as the " referred to as the lower edge 8". Here, the "upper edge 7" is an edge positioned on the forehead side when the wearer's eyes are covered, and the "lower edge 8" is the edge positioned near the wearer's nose when the wearer's eyes are covered. is the edge located on the side.

Further, in this specification, the "width direction" refers to the direction in which the first panel portion 10A and the second panel portion 10B, which will be described later, are arranged when the main body portion 2 is viewed from the plane direction (that is, the state shown in FIG. 1). Matching direction. The "both ends in the width direction of the main body 2" mean the end of the first panel portion 10A on the holding portion 30 side and the end of the second panel portion 10B on the holding portion 30 side.

As shown in FIG. 1, the main body portion 2 includes a first panel portion 10A that covers one eye (for example, the right eye) of the wearer and a second panel portion 10B that covers the other eye (for example, the left eye) of the wearer. I have. 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 end portions of the main body portion 2 are formed in an arc shape projecting outward.

As shown in FIG. 1, the body portion 2 has a widthwise central portion in the state in which the body portion 2 is unfolded so that the non-eye side surface (outer surface) of the wearer faces upward. It has a longitudinal centerline 100 extending in a direction perpendicular to the direction. In the body portion 2 according to the present embodiment, one side in the width direction of the vertical center line 100 constitutes the first panel portion 10A, and the other side in the width direction constitutes the second panel portion 10B. In addition, FIG. 1 is a plan view of the body part 2 in a state in which the body part 2 is unfolded so that the non-eye side surface (outer surface) of the wearer faces upward, and FIG. It is a sectional view.

As shown in FIG. 1, the first panel portion 10A and the second panel portion 10B are integrally continuous at the longitudinal center line 100, and are arranged on the left and right sides of the longitudinal center line 100 of both panel portions 10A and 10B. It has a symmetrical shape. In other words, the body portion 2 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. Instead of forming the first panel portion 10A and the second panel portion 10B integrally from the beginning, for example, the first panel portion 10A and the second panel portion 10B formed separately are mechanically coupled. It may be a configuration.

The first panel portion 10A and the second panel portion 10B are not connected near the upper edge portion 7 and near the lower edge portion 8 of the vertical center line 100, respectively, and are connected only at the vertical center line 100. FIG. As a result, when the main body portion 2 unfolds the first panel portion 10A and the second panel portion 10B about the longitudinal center line 100, the first panel portion 10A and the second panel portion 10B are arranged side by side in the plane direction. It is configured to have a planar shape. That is, as shown in FIG. 2, the main body portion 2 is arranged so that the first panel portion 10A and the second panel portion 10B form an angle of 180 degrees with the longitudinal center line 100 as the center. It is configured such that the two-panel section 10B can be unfolded. It should be noted that the "connection" referred to here includes a structure in which the first panel portion 10A and the second panel portion 10B are integrally formed to be connected from the beginning, and a structure in which the first panel portion 10A is formed separately. and a configuration for mechanically connecting the second panel portion 10B.

As shown in FIGS. 1 and 2, the main body 2 has a sheet shape, and specifically, is formed from one sheet. One sheet forming the main body 2 may be of a single structure (single-layer structure), or may be of an integrated multi-layer structure in which a plurality of sheets are laminated. The sheet-shaped member forming the main body 2 preferably has a multi-layered structure, since it is possible to give various functions to the main body 2 by giving separate functions to a plurality of sheets. . When a plurality of sheets are used, the sheets may be in an embossed or laminated state, and may be bonded on the entire surface or may be spaced apart from each other. When the sheets are separated from each other, the sheets may be joined together by joining the edges of the sheets along the shape of the main body 2 or by joining only a part of the edges. In addition, it is possible to join by the method of joining about the joining method to be mentioned later.

At least one of the body portion 2 and the cooling body 20 described later includes an intervening sheet 12 that is arranged between the eyes of the wearer and the water retaining layer 24 described later when worn. In the present embodiment, both the body portion 2 and the cooling body 20 described later are provided with the intervening sheet 12 , and the inner sheet 14 described later and the first sheet 26 of the cooling body 20 described later function as the intervening sheet 12 . The one or more intervening sheets 12 placed between the wearer's eyes and the water retaining layer 24 are all made of breathable sheets.

In the following description of the present embodiment, it is assumed that the body portion 2 is formed of one sheet having a multilayer structure. In this embodiment, the main body 2 includes an inner sheet 14 and an outer sheet 16 arranged to face the inner sheet 14 with a cooling body 20 interposed therebetween, as shown in FIG. In this embodiment, the inner sheet 14 forms the inner surface when the cooling device 1 is worn, and the outer sheet 16 forms the outer surface when the cooling device 1 is worn. Therefore, the inner sheet 14 functions as an intervening sheet 12 placed between the wearer's eyes and the water retaining layer 24 when worn. The inner sheet 14 and the outer sheet 16 are formed to have the same shape and size, and the inner sheet 14 and the outer sheet 16 are laminated to form a single sheet with a multilayer structure.

A cooling body 20 is arranged between the inner sheet 14 and the outer sheet 16 in the main body 2 according to the present embodiment. That is, when both the inner sheet 14 and the outer sheet 16 are made of a single-layer or multi-layered nonwoven fabric as described later, the cooling body 20 is sandwiched between two or more nonwoven fabrics. However, it is not limited to this, and a pocket-shaped storage portion may be provided on the inner surface of the main body portion 2, and the cooling body 20 may be attached to and detached from the storage portion. It is good also as a structure which fixes the cooling body 20 to the inner surface of . Alternatively, the outer sheet 16 and the inner sheet 14 may be locally unbonded to form an opening and a storage space between the outer sheet 16 and the inner sheet 14 so that the cooling element 20 can be inserted and removed. good. Further, another member or the like may be interposed between the wearer's face and the cooling body 20 as long as heat cannot be conducted between the wearer's face and the cooling body 20 .

Here, a method for joining the inner sheet 14 and the outer sheet 16 will be described. In this embodiment, an adhesive (not shown) is applied to the outer sheet 16, and the cooling body 20 and the inner sheet 14 are adhered via the adhesive. As the adhesive, it is preferable to use a hot-melt adhesive, but it is not limited to this, and various known fixing means can be used. For example, adhesives other than hot-melt adhesives, sewing, heat-sealing, etc. are possible, but are not limited as long as they can be fixed. Instead of or in addition to the configuration in which the adhesive is applied to the outer sheet 16, it is also possible to employ a configuration in which the adhesive is applied to the inner sheet 14. FIG.

As the material of the inner sheet 14, those conventionally used in the technical field of cooling devices for covering the eyes can be used, and the type thereof is not particularly limited as long as it has air permeability. As such a sheet material, for example, a nonwoven fabric, a woven fabric, a fiber sheet such as paper, a resin foam sheet, a metal sheet, or a combination of these is used. Among them, it is preferable to use a nonwoven fabric from the viewpoint of ease of processing and economy. The fiber material of the nonwoven fabric includes, for example, one or two selected from polyester such as PET (polyethylene terephthalate); polyolefin such as PE (polyethylene), PP (polypropylene), ethylene-propylene copolymer; rayon; and cotton. The one composed of the above fibers is preferable. In addition, as the nonwoven fabric, using fibers of one or more of the above materials, air through method, spunbond method, needle punch method, meltblown method, card method, heat fusion method, hydroentanglement method, solvent bonding A single-layer or multi-layer structure may be used. In addition, the nonwoven fabric may be chemically treated depending on the purpose.

The material of the outer sheet 16 is not particularly limited, but non-woven fabrics, woven fabrics, fiber sheets such as paper, resin foam sheets, metal sheets, or combinations thereof are used, for example. Among them, it is preferable to use a nonwoven fabric from the viewpoint of ease of processing and economy. The fiber material of the non-woven fabric includes, for example, one or two selected from polyester such as PET (polyethylene terephthalate); polyolefin such as PE (polyethylene), PP (polypropylene), ethylene-propylene copolymer; rayon; and cotton. The one composed of the above fibers is preferable. In addition, as the nonwoven fabric, using fibers of one or more of the above materials, air through method, spunbond method, needle punch method, meltblown method, card method, heat fusion method, hydroentanglement method, solvent bonding A single-layer or multi-layer structure may be used. In addition, the nonwoven fabric may be chemically treated depending on the purpose.

In addition, the inner sheet 14 and the outer sheet 16 may have a single-layer structure consisting of only one sheet material, regardless of whether it is a single layer or multiple layers, or may have a multilayer structure in which two or more types of sheet materials are laminated. There may be. Furthermore, when the main body part 2 has a multi-layer structure, the constituent materials of the main body part 2 arranged on the non-eye side (outer surface) of the wearer when worn, and the eye side (inner surface) of the wearer when worn ) may be different from the constituent material of the main body portion 2 disposed in ). Specifically, the outer sheet 16, which is arranged on the outside when worn, may be made of a material suitable for giving shape retention to the cooling device. Suitable materials of construction may be selected. On the other hand, for the inner sheet 14, which is arranged on the inner side when the garment is worn, a constituent material may be selected for the purpose of improving contact with the skin. Moreover, the inner sheet 14 and the outer sheet 16 may be colored in an arbitrary color, and may be given an arbitrary pattern by printing or the like. According to such a configuration, the texture and taste are improved, and it becomes possible to make the cooling tool to the taste of the user.

In this embodiment, the inner sheet 14 functions as the intervening sheet 12 . The inner sheet 14 functioning as the intervening sheet 12 is made of a breathable sheet. Specifically, the air permeability of the inner sheet 14 at least in the region between the wearer's eyes and the water retaining layer 24 should be 300 seconds/100 mL or less from the viewpoint of promoting vaporization heat dissipation due to evaporation of water. is preferably 200 seconds/100 mL or less, more preferably 100 seconds/100 mL or less, even more preferably 5 seconds/100 mL or less, and 0 seconds/100 mL. Most preferred. As long as such air permeability is satisfied, the inner sheet 14 may be partially non-permeable.

Here, the air permeability is a value measured according to JIS P8117 (2009 revision), and is defined as the time required for 100 ml of air to pass through an area of 6.42 cm ² under constant pressure. Therefore, a large value of air permeability means that it takes time for air to pass through, that is, the air permeability is low. Conversely, a small value of air permeability means high air permeability. In this way, the magnitude of the numerical value of air permeability and the degree of air permeability show an inverse relationship. The air permeability can be measured with an Oken type air permeability meter. In this specification, an air permeability of less than 30000 seconds/100 ml is defined as "breathability", and an air permeability of 30000 seconds/100 ml or more and less than 80000 seconds/100 ml is defined as "difficult air permeability", and 80000 seconds /100 ml or more air permeability is defined as "non-aerated".

In addition, the inner sheet 14 functioning as the intervening sheet 12 is preferably a moisture-permeable waterproof sheet having both moisture permeability and waterproofness in addition to breathability. Specifically, the moisture permeability of the inner sheet 14 at least in the region between the wearer's eyes and the water retaining layer 24 is 12000 g/m ² ·24 hr or less from the viewpoint of suppressing stuffiness and wetting when worn. is preferably 11,000 g/m ² ·24 hr or less, and even more preferably 10,000 g/m ² ·24 hr or less. In addition, the moisture permeability is preferably 2000 g/m ² ·24 hr or more, more preferably 2500 g/m ² ·24 hr or more, and more preferably 3000 g /m ² ·24 hr or more is more preferable. As long as such moisture permeability is satisfied, the inner sheet 14 may be partially non-permeable. In addition, although the inner sheet 14 has been described as being a sheet having moisture permeability, it is not limited to this, and the moisture permeability may be adjusted within a range that does not affect the feeling of use. It may be a sheet.

Here, the term "moisture permeability" refers to the property of allowing water vapor to pass through. Moisture permeability is a value measured by the A-1 method of JIS L1099:2012, and is defined as a numerical value (g) of water permeating 1 m ² in 24 hours. Therefore, a large numerical value of moisture permeability means high moisture permeability, and conversely, a small numerical value of moisture permeability means low moisture permeability. In this specification, a moisture permeability of 100 g/m ² ·24 h or more is defined as “moisture permeability”, and a moisture permeability of less than 100 g/m ² ·24 hr or more than 30 g/m ² ·24 hr is defined as “impermeable moisture permeability”. defined as "no moisture permeability" of less than 30 g/m ² ·24 hr.

In addition, the water resistance of the inner sheet 14 at least in the region between the wearer's eyes and the water retaining layer 24 is preferably 300 mm or more, more preferably 400 mm or more, from the viewpoint of preventing the wearer's eyes from getting wet. is more preferable, and 500 mm or more is even more preferable. Furthermore, it is most preferably 1000 mm. As long as such water resistance is satisfied, the inner sheet 14 may be partially non-waterproof. Further, although the inner sheet 14 has been described as being a waterproof sheet, it is not limited to this, and may be a non-waterproof sheet (water-permeable sheet).

Here, waterproofness means the property of preventing permeation of water. Waterproofness can be evaluated by water resistance, and this water resistance can be measured by the JISL 1092 A method. The water resistance is defined as the height of the water column (mm) per ^cm2 that can withstand water penetration. Therefore, a large value of water resistance means high waterproofness, and conversely, a small value of water resistance means low waterproofness. In this specification, water resistance of 300 mm or more is defined as "waterproof", and water resistance of less than 300 mm is defined as "non-waterproof" or "permeable".

The basis weight of the inner sheet 14 is preferably 5 g/m ² or more, more preferably 10 g/m ² or more, from the viewpoint of increasing the thickness and sheet strength in a well-balanced manner and from the viewpoint of improving the fit around the eyes. More preferably, it is 15 g/m ² or more, and even more preferably 20 g/m ² or more. In addition, the basis weight of the inner sheet 14 increases the heat transfer efficiency from the wearer's face to the cooling body 20, facilitates the evaporation of water vapor generated from the cooling body 20, and makes it easier to feel cold. It is preferably 80 g/m ² or less, more preferably 60 g/m ² or less, still more preferably 40 g/m ² or less, and even more preferably 30 g/m ² or less.

In this embodiment, the air permeability of the outer sheet 16 is not particularly specified, and any material can be used according to the design of the product as long as it does not impair the performance of the product. Specifically, any of a breathable sheet, a non-breathable sheet and a non-breathable sheet may be used. Further, the outer sheet 16 may be stretchable or non-stretchable. Examples of the stretchable sheet include a sheet containing elastic fibers as constituent fibers, a sheet containing elastic filaments, and a sheet exhibiting stretchability due to a structure such as rubber knitting. When the sheet of the cooling body 20 facing the outer sheet 16 (second sheet 28 described later in this embodiment) is a breathable sheet, the outer sheet 16 is also preferably a breathable sheet.

In addition, the basis weight of the outer sheet 16 is determined from the viewpoint of providing a good fit around the eyes, stably maintaining the shape of the main body 2, stably holding the cooling body 20, and furthermore, the cooling body 20 is transparent, which impairs the appearance. It is determined from the viewpoint of preventing From this point of view, it is preferably 10 g/m ² or more, more preferably 15 g/m ² or more, even more preferably 20 g/m ² or more, and even more preferably 25 g/m ² or more. preferable. In addition, the basis weight of the outer sheet 16 is preferably 200 g/m ² or less, and 160 g/m ² or less, from the viewpoint of making it easy to transmit the cooling sensation of the cooling device to the skin and providing comfortable wearing comfort. is more preferably 120 g/m ² or less, and even more preferably 80 g/m ² or less.

As shown in FIG. 1, the body portion 2 is formed near the upper edge portion 7 of the vertical center line 100 when the body portion 2 is unfolded so that the non-eye side surface (outer surface) of the wearer faces upward. and a lower slit 9b formed on the lower edge portion 8 side of the longitudinal center line 100 .

The upper slit 9a is a notch or an incision line formed between the first panel portion 10A and the second panel portion 10B near the upper edge portion 7 of the longitudinal centerline 100. As shown in FIG. The lower slit 9b is a notch or an incision line formed between the first panel portion 10A and the second panel portion 10B in the vicinity of the lower edge portion 8 of the longitudinal center line 100. As shown in FIG. The upper slit 9a is configured to be positioned between the eyebrows of the wearer or in the vicinity thereof when the cooling device 1 is worn. Further, the lower slit 9b is configured to be positioned at or near the nose bridge of the wearer when the cooling device 1 is worn. The body part 2 has these upper slits 9a and lower slits 9b, thereby improving the fit of the first panel part 10A and the second panel part 10B to the wearer's face (especially nose, eyes and forehead). becomes possible.

In this embodiment, the length of the lower slit 9b is formed longer than the length of the upper slit 9a. The shapes of the upper edge portion 7, the lower edge portion 8, the upper slit 9a and the lower slit 9b of the body portion 2 are appropriately adjusted so as to easily fit the wearer's face (particularly the nose, eyes and forehead). , and it is possible to adopt various arbitrary shapes such as a straight line, an arc shape, and a shape having locally convex portions or curved portions.

Before use, the main body 2 having the above structure is folded flat by folding the first panel 10A and the second panel 10B along the longitudinal center line 100 . In this state, as will be described later, the holding portion 30 can be folded inside the main body portion 2 and stored (see FIG. 6), thereby making it compact. On the other hand, the main body part 2 is opened from the edge opposite to the longitudinal center line 100 in use, and worn so that the inner surface where the main body part 2 is folded faces the wearer's side. .

[Configuration of holding part]
The holding portions 30 are joined to both ends of the body portion 2 in the width direction, and hold the body portion 2 to the wearer's face. An example of the holding portion 30 will be described below.

In this embodiment, the holding portions 30 are ear hooks that can be attached to the wearer's ears, and are provided as a pair at the left and right end portions in the longitudinal direction (width direction) of the main body portion 2 . As shown in FIG. 1, the holding portion 30 includes an ear hook main body 31, an ear hook hole 32 through which the wearer's ear can be inserted, and a seal portion 39 (see FIG. 1) that joins the main body 2 and the ear hook main body 31 together. 2).

The ear hook main body 31 has an upper edge, a lower edge, an open edge on the open side of the holding part 30 that is not joined to the main body part 2 , and a joining edge that is joined to the main body part 2 . In this embodiment, the ear hook main body 31 is planar and has a substantially square shape with rounded corners. Specifically, the upper side and the lower side are curved at the portions connecting with the joint edge and the open edge.

In this embodiment, since the holding portions 30 are a pair, the length (mm) of one holding portion 30 parallel to the width direction of the main body portion 2 is bisected by the longitudinal center line 100. is smaller than the width (mm) of As a result, when the cooling device 1 is folded in half along the longitudinal center line 100, the holding portion 30 overlaps with the main body portion 2 and is unnaturally folded inside the main body portion 2, resulting in an increase in thickness and the holding portions 30 being separated from each other. It is possible to suppress the entanglement of the cooling device 1 and to make the cooling device 1 more compact. Moreover, when the holding part 30 is folded inside the main body part 2, the holding part 30 is less likely to be contaminated, and the sanitary aspect can be further improved.

The holding portion 30 may be made of the same material as that of the body portion 2 or may be made of a different material, but from the viewpoint of improving the fitting feeling of the body portion 2, it is preferably made of a material having elasticity. , the one that can be easily stretched in the width direction of the body portion 2 is preferable. In this embodiment, the holding part 30 is preferably made of nonwoven fabric, and more preferably made of stretchable nonwoven fabric. From the viewpoint of bonding with the main body portion 2, it is preferable that a thermoplastic resin is included as the constituent fibers. Furthermore, from the viewpoint of ease of processing, it is more preferable to contain polypropylene. The holding part 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 synthetic fibers made of urethane may be used. is more preferred. With such a configuration, the flexibility and fit of the holding part 30 can be efficiently exhibited, and sufficient strength can be exhibited when the cooling device 1 is used.

It should be noted that the holding part 30 is not limited to the planar ear hook described above as long as it can hold the main body part 2 in front of the wearer's eyes, and can be normally used to fix the cooling device. It is possible to arbitrarily use what is possible, for example, a rubber cord-like ear hook, or one or a plurality of Various configurations such as bands can be employed. Moreover, the holding portion 30 is not limited to the configuration of separate members that are joined to both ends in the width direction of the main body portion 2 , and may be configured to be integrally formed with the main body portion 2 .

[Configuration of cooling body]
As shown in FIG. 4, the cooling body 20 includes a water retaining layer 24 that retains water, and is arranged on the main body 2 so that at least a portion of the cooling body 20 is in direct or indirect contact with the wearer's eyes when worn. ing.

Specifically, the form of the cooling body 20 includes, for example, forms (i) and (ii) shown below.
(i) One form of the cooling body 20 is a form that is a sheet-like material having a water retention layer 24 . In this case, the water retaining layer 24 is obtained by coating one surface of the sheet with a paste obtained by mixing a powdery or fibrous water retaining material with water. The sheet may be any of the first sheet 26, the second sheet 28, and the base material layer 22, which will be described later.
(ii) Another form of the cooling body 20 is a form in which the water retaining material itself retains its shape and is the water retaining layer 24 . In this case, it is obtained by cutting the water retaining material into a desired size and adding water.
In this specification, the water-retaining material has a water-retaining capacity (water absorption or water removal), and the type is not particularly limited as long as it can retain water. It is preferable to be excellent in

In both modes (i) and (ii) above, the cooling body 20 includes a bag formed by joining the peripheral edges of the first sheet 26 and the second sheet 28 to each other, and the water retaining material is contained in the bag. It may have an enclosed configuration. In the cooling body 20, the first sheet 26 and the second sheet 28 form a bag body in this way, thereby preventing unintentional falling off of the constituent materials, further increasing manufacturing efficiency, and appropriately adjusting the amount of steam. .

As one form of the cooling body 20 , it is a rectangular flat body, and includes a base material layer 22 and a water retention layer 24 laminated on the base material layer 22 . The cooling body 20 further includes a first sheet 26 and a second sheet 28 arranged to face the first sheet 26 with the water retaining layer 24 interposed therebetween.

(water retention layer)
In the case of the form (i) above, the water-retaining layer 24 has a water-retaining material dispersed on the base material layer 22 and water retained in the water-retaining material. Examples of water-retaining materials include one or more selected from carbon components, fiber materials, water-absorbing powders, and the like.

In addition, in the case of the above form (ii) (where the water-retaining layer 24 also serves as a water-retaining material), the water-retaining layer 24 and the water-retaining material can be composed of, for example, various fiber materials. Alternatively, it can be configured by blending hydrophilic fibers and synthetic fibers. Examples of fiber materials include one or more selected from polyethylene, polypropylene, polyester, rayon, cotton, pulp, and the like.

The carbon component has water retention ability, and for example, one or more selected from activated carbon, acetylene black, and graphite can be used. As the fiber material, it is more preferable to use hydrophilic fibers, especially cellulose fibers. Chemical fibers (synthetic fibers) and natural fibers can be used as cellulose fibers. Furthermore, as the water-absorbing powder other than the above, one or more selected from vermiculite, sawdust, silica gel, calcium silicate, zeolite, pulp powder, and water-absorbing polymer can be used.

Examples of water-absorbing polymers include hydrophilic polymers having a cross-linked structure capable of absorbing and retaining liquid 20 times or more their own weight. The shape of the water-absorbing polymer may be spherical, massive, grape-like, or fibrous. 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. Also, the 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.

Specific examples of water-absorbing polymers include, for example, starch, crosslinked carboxymethylated cellulose, polymers or copolymers of acrylic acid or alkali metal acrylate salts, polyacrylic acid and its salts, and polyacrylate graft polymers. One or two or more selected from the group consisting of Among these, polymers or copolymers of acrylic acid or alkali metal acrylate salts, polyacrylic acid and its salts, and polyacrylic acid salts are preferred because the amount of water supported can be easily maintained within a specific range. Graft polymers are preferred.

Embodiments of the water-retaining layer when a water-absorbing polymer is used include, for example, (a) an embodiment having a single layer formed by sandwiching the water-absorbing polymer between two moisture-permeable sheets, and (b) a water-absorbing polymer. is directly laminated on the base material layer 22 and arranged in a single layer, or (c) a first water-absorbing polymer layer in which the water-absorbing polymer is arranged adjacently and a first water-absorbing polymer layer. Examples include a laminated structure in which a second water-absorbent polymer layer formed by sandwiching water-absorbent resin powder between two moisture-permeable sheets is arranged adjacent to the polymer layer.

The water retained in the water retaining material may be derived from an aqueous electrolyte solution (e.g., an aqueous solution of alkali metals, alkaline earth metals, etc.), and may be, for example, ethanol, methylparaben, ethylparaben, propylparaben, butylparaben, Preservatives such as phenoxyethanol, 1,3-butylene glycol, propylene glycol and dipropylene glycol, bacteriostatic agents, bactericides and antioxidants may be added.

The initial content of water retained in the water retention layer 24 enhances the cooling effect of the cooling device 1 at the initial stage of wearing, enhances the sustainability of steam emitted from the cooling body 20, and maintains the cooling effect of the cooling body 20 for a long time. From the viewpoint of maintaining the maximum water absorption of the water-retaining layer 24, it is preferably 1% by mass or more, more preferably 2% by mass or more, further preferably 3% by mass or more, and 4% by mass. The above is even more preferable. In addition, the initial water content is preferably 20 mass% or less of the maximum water absorption amount of the water retaining layer 24 from the viewpoint of reducing the weight of the cooling body 20 and preventing the cooling tool 1 from slipping off the face. It is more preferably 15% by mass or less, even more preferably 10% by mass or less, and even more preferably 7% by mass or less.

(Method for measuring maximum water absorption)
The maximum water absorption of the water retaining layer 24 can be measured, for example, by the following method. That is, first, a nylon woven bag (100 mm×150 mm) of 250 mesh (61 μm) and the sample are weighed, and the tare weight of the mesh bag and the weight of the sample are weighed. Next, put the sample in the mesh bag, place it upright in a 300 mL beaker, add 300 mL of ion-exchanged water so as not to hit the mesh bag directly, and immerse it for 30 minutes to sufficiently swell it. After that, it is suspended for 10 minutes to drain water, and weighed to two decimal places with an analytical balance. Then, using the "total mesh bag weight", the "mesh bag tare weight" and the "sample weight" obtained above, the maximum water absorption is calculated by the following formula.
"Maximum water absorption" = "Total weight of mesh bag" - "Tare weight of mesh bag" - "Weight of sample"

The initial content of water retained in the water retaining layer 24 (that is, the content of water immediately after the packaging material such as the oxygen-blocking bag is opened) is 0.04 ml or more per 1 cm ² from the above-described viewpoint. It is preferably 0.08 ml or more per 1 cm ² , still more preferably 0.10 ml or more per 1 cm ² , and preferably 0.40 ml or less per 1 cm ² , and 0.40 ml or less per 1 cm ² . It is more preferably 30 ml or less, and even more preferably 0.25 ml or less per 1 cm ² .

(Definition of initial content of water)
The initial water content in the water retaining layer 24 of the cooling body 20 is defined by the following procedure.
That is, first, the packaging material is opened, the cooling device 1 is taken out from the packaging material, and the cooling body 20 is taken out. to be installed. Then, 30 seconds after the start of opening the packaging material, measurement of the moisture content of the cooling body 20 is started.
In the above method, the initial content of water is defined as the difference between the weight before drying and the weight after drying after drying by heating at 70° C. for 10 hours with a moisture meter.

(Base material layer)
The base material layer 22 is provided so as to cover the surface of the water retaining layer 24 opposite to the first sheet 26 .
When the base material layer 22 is placed on the eye side when worn, the generation of steam to the non-eye side (outside of the main body 2) is promoted, and the accompanying heat of vaporization enhances the cooling effect inside the main body 2. becomes possible. In addition, by suppressing evaporation of water in the water retaining layer 24 to the face side, it is possible to suppress stuffiness in the eyes due to steam released from the cooling body 20 .
On the other hand, when the base material layer 22 is placed on the non-eye side when worn, it is possible to promote steam generation toward the eye side, and the accompanying heat of vaporization can enhance the cooling effect on the eye area. In addition, by suppressing the evaporation of water in the water retention layer 24 to the non-eye side, the sustainability of the steam emitted from the cooling body 20 can be enhanced, so the cooling effect of the cooling body 20 can be maintained for a long time. can be maintained.

Even when the substrate layer 22 is arranged on the eye side or the non-eye side as described above, the amount of steam generated to the non-eye side (outside of the main body portion 2) or the eye side is appropriately adjusted depending on the air permeability of the substrate layer 22. can change. For example, when it is desired to promote the generation of steam by the heat of vaporization associated with the base layer 22 and further enhance the cooling effect in the main body 2, the base layer 22 should have an air permeability of 50 sec/100 mL or less, preferably 10 A sheet of 1 sec/100 mL or less, more preferably 1 sec/100 mL or less can be used. In addition, when it is desired to increase the effect of sustaining the cooling time in the face or the body part 2, non-breathable (air permeability of 80000 seconds / 100 mL or more) or impermeable (air permeability of 30000 seconds / 100 mL or more) sheet can be used. The air permeability of the base material layer 22 is preferably 50000 seconds/100 mL or more, more preferably 80000 seconds/100 mL or more.
When the base material layer 22 is arranged on the non-eye side, laminating the water retention layer 24 on the base material layer 22 improves productivity when installing the cooling body 20 in the main body 2. .

As such a base material layer 22, for example, a synthetic resin film can be used, and examples thereof include a polyethylene film and a polyethylene terephthalate film. The synthetic resin film may be a single layer or a multi-layer laminate. Nonwoven fabrics, paper or films, or laminates of two or more of these can be used.

(First sheet 26 and second sheet 28)
Either one of the first sheet 26 and the second sheet 28 functions as the intervening sheet 12 during wearing. The other of the first sheet 26 and the second sheet 28 other than the intervening sheet 12 is made of a non-breathable sheet or a poorly breathable sheet. In this embodiment, the first sheet 26 functions as the intervening sheet 12, and the second sheet 28 is a non-breathable sheet or a poorly breathable sheet. In this embodiment, the first sheet 26 is arranged on the eye side of the wearer, and the second sheet 28 is arranged on the non-eye side of the wearer.

In this embodiment, the first sheet 26 functions as the intervening sheet 12 . The first sheet 26 functioning as the intervening sheet 12 is made of a breathable sheet. Specifically, the air permeability of the first sheet 26 at least in the region between the wearer's eyes and the water retaining layer 24 is 350 seconds from the viewpoint of gently releasing the generated steam and preventing excessive humidification. /100 mL or less is preferable, and 100 seconds/100 mL or less is more preferable. Since the first sheet 26 has such air permeability, it is possible to enhance the cooling effect on the face by the heat of vaporization accompanying the evaporation of moisture and the heat radiation. It should be noted that the first sheet 26 may have a structure in which a part thereof does not have air permeability as long as it satisfies such air permeability.

In addition, the first sheet 26 functioning as the intervening sheet 12 is preferably a moisture-permeable waterproof sheet having both moisture permeability and waterproofness in addition to breathability. Specifically, the first sheet 26 has a moisture permeability of 2000 g/m ² · at least in the region between the wearer's eyes and the water retaining layer 24, from the viewpoint of enhancing the cooling effect by vaporization heat dissipation accompanying the evaporation of water vapor. It is preferably 24 hr or more, more preferably 2500 g/m ² ·24 hr or more, and even more preferably 3000 g/m ² ·24 hr or more. In addition, from the viewpoint of suppressing stuffiness and wetting when worn, the weight is preferably 12,000 g/m ² ·24 hr or less, more preferably 11,000 g/m ² ·24 hr or less, and 10,000 g/m ² ·24 hr or less. is more preferable, and 8000 g/m ² ·24 hr or less is even more preferable. As long as such moisture permeability is satisfied, the first sheet 26 may have a configuration in which a portion thereof does not have moisture permeability. Also, although the first sheet 26 has been described as being a moisture-permeable sheet, it is not limited to this, and may be a low-moisture-permeability sheet or a non-moisture-permeability sheet.

In addition, the first sheet 26 preferably has a water resistance of 300 mm or more, and preferably 400 mm or more, from the viewpoint of suppressing stuffiness and wetting when worn, at least in the region between the wearer's eyes and the water retaining layer 24. is more preferable, and 500 mm or more is even more preferable. Furthermore, it is most preferably 1000 mm. As long as such water resistance is satisfied, the first sheet 26 may be partially non-waterproof. Also, although the first sheet 26 has been described as being a waterproof sheet, it is not limited to this, and may be a non-waterproof sheet (water-permeable sheet).

As such a moisture-permeable waterproof sheet, for example, a synthetic resin porous sheet is suitable. Specifically, stretched films containing polyethylene, polypropylene, or the like can be mentioned. When such a porous sheet is used, a non-woven fabric may be laminated on the outer surface of the porous sheet to enhance the texture of the moisture-permeable waterproof sheet. Examples of nonwoven fabrics include needle-punched nonwoven fabrics, air-through nonwoven fabrics, and spunbond nonwoven fabrics. Any sheet other than a porous sheet may be used as long as it is a sheet impermeable to water but permeable to oxygen and water vapor, and if leakage prevention is taken into consideration. For example, one or two selected from artificial fibers such as polyamide, vinylon, polyester, rayon, acetate, acrylic resin, polyethylene, polypropylene and polyvinyl chloride, and natural fibers such as pulp, cotton, hemp, silk and animal hair Woven fabrics, non-woven fabrics, papers, synthetic papers, etc. in which more than one kind are mixed can be used as moisture-permeable and waterproof sheets.

In this embodiment, the second sheet 28 is a non-breathable sheet and a non-breathable sheet. The air permeability of the second sheet 28 is preferably 50000 seconds/100 mL or more, more preferably 80000 seconds/100 mL or more. By using such a non-air-permeable or air-impermeable sheet for the second sheet 28, it is possible to control the amount of evaporation of water in the water retention layer 24, so that the amount of vapor emitted from the cooling body 20 is reduced. Sustainability is enhanced, and the cooling effect of the cooling body 20 can be maintained for a long period of time. Although the outer sheet 16 is described as being a non-breathable sheet and a non-breathable sheet, it is not limited to this, and any material can be used according to the design of the product. good too.

As such an air-impermeable or air-impermeable sheet, for example, it is possible to use a synthetic resin film alone or by laminating a plurality of films. In addition, the non-breathable or air-impermeable sheet may be laminated with a non-woven fabric or the like on its outer surface to enhance its texture depending on the application. The non-woven fabric can be selected from needle-punched non-woven fabric, air-through non-woven fabric, spun-bonded non-woven fabric, etc., and is preferably a laminate film composed of a polyethylene film and a pulp sheet. The non-breathable or air-impermeable sheet may be partially breathable as long as it is a sheet with low breathability as a whole.

(perfume ingredient)
For the cooling body 20, for example, fragrance ingredients described in "Synthetic Perfume Chemistry and Product Knowledge" (written by Genichi Indo, Kagaku Kogyo Nippo Co., Ltd.) may be blended or added to an arbitrary location within a range that does not interfere with the effects of the present invention. can. Specifically, terpene hydrocarbons such as myrcene, farnesene, pinene, limonene, camphene, phellandrene, terpinene, terpinolene, p-cymene, cedrene, and caryophyllene; hexylcinnamic aldehyde, 2-methyl-3-(4- Aldehydes such as tert-butylphenyl)-propanal, 4-(4-hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde, vanillin; benzyl alcohol, phenylethyl alcohol, pamplefleur (2-methyl -4-phenylpentanol), dimethylbenzylcarbinol, phenylhexanol (3-methyl-5-phenylpentanol); phenols such as anethole and eugenol; γ-nonalactone, γ-undecalactone and other lactones.

(Cool ingredient)
From the viewpoint of imparting a further cool sensation, the cooling body 20 may contain a cooling component or may be added to an arbitrary portion within a range that does not impair the effects of the invention. Of temperature-sensitive TRP channels present in the body, those containing an agonist that acts on TRPM8, which is a cold receptor, are preferred. Examples include menthol such as L-menthol and DL-menthol, menthanediol, cineol, menthyl glyceryl ether, menthone glycerin acetal, butylcyclohexanone, isopulegol, trimethylisopropylbutanamide, menthoxypropanediol, camphor, etc., and TRPM8 agonists. Plants such as peppermint oil, peppermint oil, spearmint oil, eucalyptus oil, and essential oils contained therein may also be used. These may be used individually by 1 type, and may be used in combination of 2 or more types. Among them, one or two selected from menthol, menthyl lactate, menthyl succinate, menthyl glutarate, trimethylisopropylbutanamide, menthoxypropanediol, and camphor, from the viewpoint of comfort, effectiveness, and safety during use. Seeds or more are preferred, and menthol is more preferred.

(Amount of water vapor generated by the cooling body)
The cooling body 20 having the above configuration preferably generates 2.5 mg/(cm ² ·hour) or more of water vapor to the wearer's eye side, and preferably 5.0 mg/(cm ² ·hour) or more. is more preferably 7.5 mg/(cm ² ·h) or more. By setting the amount of water vapor to be generated in such a manner, the skin can be efficiently cooled by utilizing the vaporization of water.

10. The water vapor generation amount of the cooling body 20 is preferably 20.0 mg/(cm ² ·hr) or less, more preferably 15.0 mg/(cm ² ·hr) or less. It is more preferably 0 mg/(cm ² ·h) or less. By setting it as such a water vapor generation amount, humidity can be suppressed and stuffiness can be suppressed.

The amount of water vapor generated toward the eyes of the wearer is a numerical value measured as follows using a measuring device 40 shown in FIG. In the following description, the object is the cooling body 20 enclosed in a waterproof packaging material or the like and in a sealed state, and the measurement shown in FIG. The time required for installation in the device 40, that is, the point of time five seconds after the opening is started, is defined as the "start point of water vapor generation". The measurement device 40 shown in FIG. 7 includes an aluminum measurement chamber (volume 4.2 L) 41 and an inflow path 42 for inflowing dehumidified air (humidity less than 2%, flow rate 2.1 L/min) to the bottom of the measurement chamber 41. , an outflow path 43 for outflowing air from the upper part of the measurement chamber 41, an inlet thermo-hygrometer 44 and an inlet flow meter 45 provided in the inflow path 42, an outlet thermo-hygrometer 46 provided in the outflow path 43, and an outlet A flow meter 47 and a thermometer (thermistor) 48 provided in the measurement chamber 41 are provided. As the thermometer 48, one having a temperature resolution of about 0.01°C is used. Note that the amount of steam generated in this specification refers to the total amount measured after one hour from the “point of time when the cooling body 20 starts generating steam” as a starting point.

The water vapor generation amount of the cooling body 20 is determined by the water retention performance specified by the type of water retention material used in the water retention layer 24 and the initial water content, etc., and the viscosity and boiling point of the water retained in the water retention layer 24. and the air permeability specified by the orientation, air permeability, etc. of the first sheet 26, can be realized by adjusting each other within the configuration and numerical range of each element described above. It is possible.

(Arrangement of cooling body)
As described above, the cooling body 20 having the above configuration is at least partially in direct or indirect contact with the wearer's eyes when the main body 2 covers the wearer's eyes (when worn). It is arranged in the main body part 2 as shown in FIG. In this embodiment, the cooling element 20 is arranged between the inner sheet 14 and the outer sheet 16 of the main body 2 , so that the cooling element 20 is applied to the wearer's face through the inner sheet 14 when worn. come into indirect contact with

As shown in FIG. 1, the cooling bodies 20 according to the present embodiment are arranged on both the first panel portion 10A and the second panel portion 10B so as to be bilaterally symmetric with respect to the vertical center line 100 . In the illustrated example, two cooling bodies 20 are installed, one for each of the left and right panels.

The planar shape of the cooling body 20 is not particularly limited, and may be circular, polygonal, or the like. From the viewpoints of production efficiency, ease of handling, and cooling effect, quadrilaterals such as rectangles and substantially squares are preferable, and substantially squares are more preferable from the viewpoint of ease of handling. In addition, it is preferable to install one or more cooling elements 20 in the cooling device 1, preferably one to two or more in each panel, and the cooling bodies 20 can be installed in both the left and right panels. Although it is more preferable, it is not limited to this. Furthermore, when a plurality of cooling bodies 20 are installed, the cooling characteristics of the plurality of cooling bodies 20 may be the same or different, but are preferably the same.

(1 hour average relative humidity and 1 hour average temperature)
According to the cooling tool 1 having the cooling body 20 having the above configuration and the ability to generate water vapor, it is possible to suppress the humidity for a long time and to cool the wearer's face for a long time. becomes.

Specifically, in the cooler 1 in which a breathable sheet is used as the inner sheet 14 and is oriented toward the eye side, and a non-breathable or air-impermeable sheet is used as the outer sheet 16 and oriented toward the non-eye side, It is possible to keep the hourly average relative humidity (that is, the hourly average relative humidity in the area not in direct or indirect contact with the cooling body 20) below 90%. In addition, it is possible to suppress the one-hour average temperature of the portion of the cooling body 20 that comes into direct or indirect contact with the eyes of the wearer to 29.5° C. or less.

More specifically, the one-hour average temperature of the cooling device 1 is more preferably 29.5° C. or lower, and even more preferably 29° C. or lower. Further, the one-hour average relative humidity of the cooler 1 is more preferably less than 95%, more preferably less than 90%.

(Method for measuring temperature and relative humidity)
Here, temperature and relative humidity can be measured by the following methods. That is, a female head model (width 151.24 mm, depth 206.82 mm, height 233.01 mm) modeled based on the female head average data (latest data at the time of filing) manufactured by Digital Human Technology Co., Ltd. ), place the humidity and temperature sensor near the eye and fix it with surgical tape so that it does not move. Then, in an environment of 30° C. and 40% RH, the cooling device 1 is attached to the female head model, and changes in temperature and humidity are measured every 10 seconds. As the temperature/humidity sensor, a temperature/humidity sensor SHT71 (manufactured by Sensirion Co., Ltd.) can be used.

[How to use cooling equipment]
Next, how to use the cooling tool 1 according to this embodiment will be described.
In this embodiment, as shown in FIG. 6, since the cooling body 20 is integrated with the main body 2, the whole cooling tool 1 is enclosed in a waterproof package 200 and stored. In this storage state, the body portion 2 is folded around the vertical center line 100 with the holding portion 30 folded inward. Moreover, in this storage state (the state enclosed in the package), the water retaining layer 24 already contains water.

First, the wearer opens the package 200 and takes out the cooling tool 1 from the package 200 when wearing it. After taking out the cooling tool 1 from the package 200 , the wearer opens the main body 2 folded in half from both widthwise end sides and takes out the pair of holding parts 30 from the inside of the main body 2 . Then, as shown in FIG. 5( a ), with the main body 2 in contact with the eye, the holder 30 is pulled with a finger to insert the ear through the ear hook hole 32 . By hooking the pair of holding portions 30 on the left and right ears of the wearer in this manner, the wearer's eyes are kept covered by the body portion 2 as shown in FIG. 5(b). The body portion 2 can be held on the wearer's face. In the cooling tool 1 according to the present embodiment, since water is already contained in the water retaining layer 24 in a state of being enclosed in the package, it is not necessary to moisten it by immersing it in water after taking it out of the package 200. do not have. Therefore, it can be used simply by unsealing, and can be used easily.
In addition, when only one cooling tool 1 is enclosed in the package 200, there is also an advantage that it is hygienic.

With the main body 2 covering the eyes, at least part of the cooling body 20 contacts the eyes of the wearer, so that heat is conducted from the eyes of the wearer to the cooling body 20. The person's eyes are cooled. In addition, the cooling body 20 is warmed by the heat of the wearer's eyes, and the water held in the cooling body 20 evaporates, and the heat of vaporization radiates heat from the cooling body 20, further cooling the wearer's eyes. . Furthermore, heat is radiated from the cooling body 20 by heat conduction from the cooling body 20 to the outside air. With such a cooling mechanism, the cooling tool 1 according to the present embodiment can provide a cool feeling to the wearer for a long period of time. In addition, since the cooling device 1 according to the present embodiment gives a cool feeling to the wearer by such a cooling mechanism, it is not necessary to cool it in a refrigerator or the like in advance. In addition, when the intervening sheet 12 (the inner sheet 14 and the first sheet 26) arranged between the eyes and the water retaining layer 24 has a moisture-permeable and waterproof property, the moisture in the water retaining layer 24 is reduced while suppressing stuffiness around the eyes. Since exudation can be prevented, it is possible to further suppress stuffiness and wetness around the eyes of the wearer, and to use it comfortably.

[Advantages of cooling device according to the present embodiment]
As described above, the cooling device 1 according to the present embodiment includes the body portion 2 covering at least the eyes of the wearer's face and the cooling body 20 provided in the body portion 2, and at least the cooling body 20 is waterproof. The cooling device 1 is stored in a state enclosed in a package 200 having a cooling device 1. The cooling device 20 includes a water retention layer 24 that retains water in a state enclosed in the package 200, and when worn, at least one At least one of the body portion 2 and the cooling body 20 is arranged in the body portion 2 so that the portion is in direct or indirect contact with the wearer's eyes, and at least one of the body portion 2 and the cooling body 20 is in contact with the wearer's eyes and the water retention layer 24 when worn. With an intervening sheet 12 disposed therebetween, the one or more intervening sheets 12 disposed between the wearer's eyes and the water retaining layer 24 are all made of breathable sheets.

According to the cooling device 1 having such a configuration, since the cooling body 20 has water in advance, it is not necessary to submerge the cooling device 1 in water before use. You can start using it immediately after it is dry. In addition, since the cooling mechanism via the breathable sheet gives the wearer a feeling of coolness, it is not necessary to cool it in a refrigerator or the like before use. Therefore, the cooling tool 1 according to the present embodiment is highly convenient, and can prevent the wearer's eyes from getting stuffy or wet due to water vapor.

Further, in the cooling device 1 according to the present embodiment, the air-permeable sheet has a moisture permeability of 12000 g/m ² ·24 hr or less and a waterproofness of 300 mm or more. With such a configuration, it is possible to enhance the cooling effect on the face by heat of vaporization and heat dissipation, and to prevent stuffiness around the wearer's eyes due to water penetration.

In addition, in the cooling device 1 according to the present embodiment, the body portion 2 includes an inner sheet 14 and an outer sheet 16 arranged to face the inner sheet 14 with the cooling body 20 interposed therebetween. It functions as an intervening sheet 12 when worn. In the case of having such a configuration, it is possible to promote the generation of steam and enhance the cooling effect on the face by the accompanying heat of vaporization and heat dissipation, and prevent the wearer's eyes from becoming stuffy due to steam. It becomes possible.

Further, when the outer sheet 16 is made of an air-impermeable sheet or air-impermeable sheet, it is possible to enhance the effect of sustaining the cooling time around the eyes.

Further, when the initial water content in the water retention layer 24 of the cooling body 20 is 0.40 ml or less per 1 cm ² , the cooling effect of the cooling device 1 at the initial stage of wearing is enhanced, and the steam emitted from the cooling body 20 is increased. , the cooling effect of the cooling body 20 can be maintained for a long time, and the weight of the cooling body 20 can be suppressed to prevent the cooling tool 1 from slipping off the face. Become. In particular, when the water-retaining layer 24 contains a water-absorbing polymer, the steam released from the cooling body 20 has a remarkable ability to sustain.

In addition, under the measurement environmental conditions of 30 ° C. 40% RH, if the 1-hour average temperature at the part that directly or indirectly contacts the eyes of the cooling body is 29.5 ° C. or less, wearing It is possible to cool the eyes of the person for a long time.

[Modification]
Although the preferred embodiments of the present invention have been illustrated and described above, the technical scope of the present invention is not limited to the scope described in the above-described embodiments. Various changes or improvements can be added to the above embodiments.

In the above-described embodiment, the entire cooling tool 1 is enclosed in the packaging body 200, but the invention is not limited to this. ), the main body 2 and the cooling body 20 may be individually packaged, or only the cooling body 20 may be packaged.

It is clear from the description of the scope of claims that modifications such as those described above are included in the scope of the present invention.

This invention discloses the following cooling tools further regarding embodiment mentioned above.

<1>
A cooling device comprising: a main body covering at least the eyes of a wearer's face; ,
The cooling body includes a water retention layer that retains water in a state enclosed in the package, and is arranged in the main body so that at least a portion of the cooling body comes into direct or indirect contact with the wearer's eyes when the cooling body is worn. has been
At least one of the body portion and the cooling body includes an intervening sheet that is arranged between the wearer's eyes and the water retention layer when worn,
The one or more intervening sheets arranged between the eyes of the wearer and the water retaining layer are all made of a breathable sheet. Cooling device.

<2>
The cooling body further comprises a first sheet and a second sheet arranged to face the first sheet via the water retention layer,
The cooling device according to <1>, wherein one of the first sheet and the second sheet functions as the intermediate sheet when worn.

<3>
The cooling device according to <2> above, wherein the other of the first sheet and the second sheet other than the intervening sheet is made of a non-breathable sheet or a poorly air-permeable sheet.

<4>
The main body includes an inner sheet and an outer sheet arranged to face the inner sheet through the cooling body,
The cooling device according to any one of <1> to <3>, wherein the inner sheet functions as the intervening sheet when worn.

<5>
The cooling device according to <4>, wherein the outer sheet is made of an air-impermeable sheet or a air-impermeable sheet.

<6>
The inner sheet preferably has an air permeability of 300 seconds/100 mL or less, more preferably 200 seconds/100 mL or less, at least in the region between the wearer's eyes and the water-retaining layer. /100 mL or less, more preferably 5 seconds/100 mL or less, and most preferably 0 seconds/100 mL. The cooler according to <4> or <5>.

<7>
The inner sheet preferably has a moisture permeability of 12,000 g/m ² ·24 hr or less, more preferably 11,000 g/m ² ·24 hr or less, at least in the region between the eyes of the wearer and the water-retaining layer. , more preferably 10000 g/m ² ·24 hr or less. The cooling tool according to any one of the above <4> to <6>.
<8>
The inner sheet preferably has a moisture permeability of 2000 g/m ² ·24 hr or more, more preferably 2500 g/m ² ·24 hr or more, at least in the region between the wearer's eyes and the water retaining layer. , more preferably 3000 g/m ² ·24 hr or more. The cooling tool according to any one of the above <4> to <7>.

<9>
The inner sheet preferably has a water resistance of 300 mm or more, more preferably 400 mm or more, and even more preferably 500 mm or more, at least in the region between the wearer's eyes and the water-retaining layer. The cooler according to any one of <4> to <8>, which is most preferably 1000 mm.

<10>
The basis weight of the inner sheet is preferably 5 g/m ² or more, more preferably 10 g/m ² or more, still more preferably 15 g/m ² or more, and 20 g/m ² or more. The cooling tool according to any one of <4> to <9> is even more preferable.
<11>
The basis weight of the inner sheet is preferably 80 g/m ² or less, more preferably 60 g/m ² or less, even more preferably 40 g/m ² or less, and 30 g/m ² or less. More preferably, the cooling tool according to any one of <4> to <10>.

<12>
The basis weight of the outer sheet is preferably 10 g/m ² or more, more preferably 15 g/m ² or more, still more preferably 20 g/m ² or more, and 25 g/m ² or more. The cooling tool according to any one of <4> to <11> is even more preferable.
<13>
The basis weight of the outer sheet is preferably 200 g/m ² or less, more preferably 160 g/m ² or less, still more preferably 120 g/m ² or less, and 80 g/m ² or less. More preferably, the cooling tool according to any one of <4> to <12>.

<14>
According to any one of <1> to <13>, the main body portion includes a first panel portion that covers one eye of the wearer and a second panel portion that covers the other eye of the wearer. Cooling equipment as described.
<15>
The main body portion extends in a direction perpendicular to the width direction at the center portion in the width direction of the main body portion when the main body portion is unfolded so that the non-eye side surface (outer surface) of the wearer faces upward. It has a longitudinal center line, one side in the width direction bordering on the longitudinal center line constitutes the first panel portion, and the other side in the width direction constitutes the second panel portion. <14> Cooling device as described in .

<16>
The main body includes an upper slit formed in the vicinity of an upper edge of the vertical center line and the vertical The cooling device according to <15> above, further comprising a lower slit formed on the lower edge side of the center line.

<17>
The upper slit is a notch or an incision line formed between the first panel portion and the second panel portion near the upper edge portion of the longitudinal center line, and when the cooling device is attached, The cooling device according to <16> above, configured to be positioned between the eyebrows of the wearer or in the vicinity thereof.
<18>
The lower slit is a notch or an incision line formed between the first panel portion and the second panel portion in the vicinity of the lower edge portion of the longitudinal center line, and when the cooling device is attached , The cooling device according to <16> or <17>, which is configured to be positioned on or near the nose bridge of the wearer.

<19>
The body portion has a planar shape in which the first panel portion and the second panel portion are parallel in a planar direction when the first panel portion and the second panel portion are unfolded about the longitudinal center line. The cooler according to any one of <15> to <18>.
<20>
The first panel portion and the second panel portion are not connected near the upper edge portion and near the lower edge portion of the longitudinal center line, respectively, and are connected only at the longitudinal center line <15> ~ The cooling tool according to any one of <19>.

<21>
The initial content of water retained in the water-retaining layer (i.e., the water content immediately after opening the packaging material such as the oxygen-blocking bag) is 1% by mass or more of the maximum water absorption of the water-retaining layer. Preferably, it is more preferably 2% by mass or more, further preferably 3% by mass or more, and even more preferably 4% by mass or more. Any one of <1> to <20> cooler.
<22>
The initial content of water retained in the water-retaining layer (i.e., the water content immediately after opening the packaging material such as the oxygen-blocking bag) is 20% by mass or less of the maximum water absorption of the water-retaining layer. Preferably, it is 15% by mass or less, more preferably 10% by mass or less, and even more preferably 7% by mass or less. Any one of <1> to <21> cooler.

<23>
The initial content of water retained in the water-retaining layer is preferably 0.04 ml or more per 1 cm ² , more preferably 0.08 ml or more per 1 cm ² , and 0.10 ml or more per 1 cm ² . The cooling tool according to any one of <1> to <22> above is more preferable.
<24>
The initial content of water retained in the water-retaining layer is preferably 0.40 ml or less per 1 cm ² , more preferably 0.30 ml or less per 1 cm ² , and 0.25 ml or less per 1 cm ² . The cooling tool according to any one of <1> to <23> above is more preferable.

<25>
The cooling device according to <2> or <3>, wherein the cooling body further includes a base layer provided to cover a surface of the water retaining layer opposite to the first sheet.
<26>
The cooling tool according to <25> above, wherein the base material layer has an air permeability of 50 seconds/100 mL or less, preferably 10 seconds/100 mL or less, more preferably 1 second/100 mL or less.
<27>
The cooling device according to <25> above, wherein the base layer preferably has an air permeability of 50000 seconds/100 mL or more, more preferably 80000 seconds/100 mL or more.

<28>
Either one of the first sheet and the second sheet that functions as the intervening sheet has an air permeability of 350 seconds/100 mL or less at least in the region between the eyes of the wearer and the water retaining layer. The cooling device according to any one of <2>, <3> and <25> to <27> above, preferably 100 seconds/100 mL or less.

<29>
Either one of the first sheet and the second sheet that functions as the intervening sheet has a moisture permeability of 2000 g/m ² ·24 hr or more in at least the region between the eyes of the wearer and the water retaining layer. preferably 2,500 g/m ² ·24 hr or more, and still more preferably 3,000 g/m ² ·24 hr or more Any of the above <2>, <3>, and <25> to <28> or the cooling device according to item 1.
<30>
Either one of the first sheet and the second sheet that functions as the intervening sheet has a moisture permeability of 12000 g/m ² ·24 hr or less at least in the region between the eyes of the wearer and the water retaining layer. preferably 11,000 g/m ² ·24 hr or less, still more preferably 10,000 g/m ² ·24 hr or less, even more preferably 8,000 g/m ² ·24 hr or less <2 >, <3> and <25> to <29>.

<31>
Either one of the first sheet and the second sheet that functions as the intervening sheet preferably has a water resistance of 300 mm or more in at least the region between the eyes of the wearer and the water retaining layer, The cooling device according to any one of <2>, <3>, and <25> to <30> above is more preferably 400 mm or more, and further preferably 500 mm or more.

<32>
The cooling body preferably generates 2.5 mg/(cm ² ·h) or more, more preferably 5.0 mg/(cm ² ·h) or more, to the eye side of the wearer. The cooling tool according to any one of <1> to <31>, preferably 7.5 mg/(cm ² ·h) or more, more preferably 7.5 mg/(cm 2 ·h) or more.
<33>
The cooling body preferably generates 20.0 mg/(cm ² ·hour) or less of water vapor to the eye side of the wearer, more preferably 15.0 mg/(cm ² ·hour) or less. The cooling tool according to any one of <1> to <32>, preferably 10.0 mg/(cm ² ·h) or less, more preferably 10.0 mg/(cm 2 ·h) or less.

<34>
The cooling device according to any one of <1> to <33>, wherein the water retaining layer includes a water absorbing polymer.

<35>
Under the measurement environment conditions of 30° C. and 40% RH, it is more preferable that the one-hour average temperature of the portion of the cooling body that is in direct or indirect contact with the eyes of the wearer is 29.5° C. or less. ° C. or lower. The cooling tool according to any one of <1> to <34>.
<36>
More preferably, the one-hour average relative humidity in a region of the cooling body that is not in direct or indirect contact with the wearer's eyes is less than 95% under the measurement environmental conditions of 30°C and 40% RH, The cooling tool according to any one of <1> to <35>, which is more preferably less than 90%.

Reference Signs List 1: cooling device 2: main body portion 7: upper edge portion 8: lower edge portion 9a: upper slit 9b: lower slit 10A: first panel portion 10B: second panel portion 12: intervening sheet 14: inner sheet 16: outer surface Sheet 20 : Cooling body 22 : Base material layer 24 : Water retaining layer 26 : First sheet 28 : Second sheet 30 : Holding part 31 : Ear hook main body 32 : Ear hook hole 39 : Seal part 100 : Vertical center line 200 : package

Claims (5)

A cooling device comprising: a main body covering at least the eyes of a wearer's face; ,
The cooling body includes a water retention layer that retains water in a state enclosed in the package, and is arranged in the main body so that at least a portion of the cooling body comes into direct or indirect contact with the wearer's eyes when the cooling body is worn. has been
At least one of the body portion and the cooling body includes an intervening sheet that is arranged between the wearer's eyes and the water retention layer when worn,
The one or more intervening sheets arranged between the eyes of the wearer and the water retaining layer are all made of a breathable sheet. Cooling device. The cooling body further comprises a first sheet and a second sheet arranged to face the first sheet via the water retention layer,
The cooling device according to claim 1, wherein one of the first sheet and the second sheet functions as the intermediate sheet when worn. 3. The cooler according to claim 2, wherein the other of the first sheet and the second sheet other than the intervening sheet is made of a non-breathable sheet or a poorly breathable sheet. The main body includes an inner sheet and an outer sheet arranged to face the inner sheet through the cooling body,
The cooling device according to any one of claims 1 to 3, wherein the inner sheet functions as the intervening sheet when worn. 5. The cooler according to claim 4, wherein the outer sheet is made of an air-impermeable sheet or an air-impermeable sheet.

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