JP5570009B2 - Cold insulation panel and chair using the same - Google Patents

Description

  The present invention relates to a cold insulation panel and a chair using the same, and more particularly to a cold insulation panel and a chair using the cold insulation panel that are used, for example, in a portion that is in close contact with the body to give a cool feeling to the user.

  An example of a conventional chair having a cooling function is disclosed in Patent Document 1. In the technique of Patent Document 1, a cooling unit having a refrigerant circuit including a compressor, a condenser, and an evaporator and a chair are integrally configured, and air exchanged with the evaporator is supplied to the seating space by a blower. I am trying to air-condition.

On the other hand, as a countermeasure against the heat island phenomenon, which increases the temperature in urban areas in summer, the surface temperature is increased by providing water retention to road pavement materials and building outer wall materials and evaporating the water retained in the interior. A technique for suppressing the increase in the amount of light is known. For example, in Patent Document 2, after a lightweight aggregate having fine continuous voids is immersed in an aqueous solution rich in carbon dioxide gas, this lightweight aggregate, cement and water are kneaded and solidified to form a fine continuous. A water-retaining concrete solidified body in which voids are communicated with the surface portion is described.
JP-A-2005-348783 [A47C 7/74] JP 2001-158676 A [C04B 38/08]

  In the technique of Patent Document 1, since an electric device such as a compressor is used, it is difficult to downsize the entire apparatus, and the introduction cost increases. Moreover, since electricity is used at the time of air_conditioning | cooling, an operating cost will also start.

  On the other hand, the technique of Patent Document 2 is used as a road paving material or the like, but considers a case where such a technique is applied to a seat portion of a chair (that is, a portion used in close contact with a body). In the technique of Patent Document 2, since the surface temperature is lowered by evaporating moisture from the surface, the moisture can be evaporated when the opening of the surface is blocked by the user sitting on the seat. Therefore, the surface temperature cannot be lowered appropriately. Therefore, if the seat surface is cooled in advance before use by the user, a cool feeling (cool feeling) can be given at the moment of sitting, but after a while the seat surface is warmed by the user's body temperature. Therefore, it is impossible to give a cool feeling continuously. In addition, if the moisture is excessively evaporated from the seat surface, the humidity near the seat surface increases, which may cause discomfort to the user.

  Therefore, a main object of the present invention is to provide a novel cold insulation panel and a chair using the same.

  Another object of the present invention is to provide a cold insulation panel and a chair using the same that can reduce the cost.

  Still another object of the present invention is to provide a cold insulation panel and a chair using the same that can give a user a cool feeling for a long time.

  The present invention employs the following configuration in order to solve the above problems. Note that reference numerals in parentheses and supplementary explanations indicate correspondence with embodiments described later in order to help understanding of the present invention, and do not limit the present invention.

A first invention is a cold insulation panel used for a portion whose surface is in close contact with a body, and is formed into a plate shape by a cement gel obtained by hardening cement , and has a panel body having at least a continuous gap communicating with the back surface , and a panel A cold insulation panel comprising a metal cover that covers the surface of the main body and evaporating the water retained in the continuous gap from the back surface of the panel main body to cool the surface of the cold insulation panel.

In the first invention, the cold insulation panel (12) includes a panel body (14) and a metal cover (28) covering the surface of the panel body , and the surface (16) is in close contact with the user's body, for example, Used for the seat and backrest of the chair (10). The panel body is formed into a plate shape by cement gel (50) and has continuous voids (52, 54, 56) communicating with at least the back surface (14a). The cold insulation panel cools the panel main body by evaporating the water retained in the continuous gap of the panel main body from the back surface, and maintains the surface temperature of the cold insulation panel at a predetermined temperature that gives the user a cool feeling.

According to the first aspect of the invention, since the water is retained by evaporating the water held inside, it is not necessary to use an electric device for cooling such as a compressor. Therefore, introduction cost and operation cost can be reduced. Moreover, since water | moisture content is evaporated from a back surface, even if a body adheres to the surface, surface temperature can be maintained at predetermined temperature, and a cool feeling can be continuously given to a user. Furthermore, by providing a metal cover, heat can be easily dispersed in areas other than the close contact portion between the user's body and the surface of the cold insulation panel, so that the surface of the cold insulation panel can be efficiently cooled.

  2nd invention is dependent on 1st invention, A continuous space | gap contains the 1st capillary part which hold | maintains water in pF range of pF2.7-4.2.

  In 2nd invention, the continuous space | gap (52,54,56) of a panel main body (14) contains the 1st capillary part which hold | maintains water in the pF area of pF2.7-4.2. Since the water held in the capillary in the pF range of pF 2.7 to 4.2 is held with an appropriate force, the water easily spreads on the back surface (14a) of the panel body, and is quickly supplied to the back surface.

  According to the second aspect of the invention, since the first capillary portion that holds water in the pF region of pF 2.7 to 4.2 is provided, the water held inside can be appropriately supplied to the back surface, and an excellent cooling effect is exhibited. it can.

  A third invention is dependent on the first or second invention, and is provided with a water propagation layer that is provided in close contact with at least one of the front surface and the back surface of the panel body and propagates water to the panel body using a capillary phenomenon. Further prepare.

  In the third invention, the cold insulation panel (12) includes a water propagation layer (32) provided in close contact with at least one of the front surface and the back surface (14a) of the panel body (14). The water propagation layer is formed of a material excellent in water absorption, such as a nonwoven fabric and a chamois, and propagates water stored in a water storage section such as a water tank or a water supply receiving frame (34) by capillary action and supplies it to the panel body. .

  According to the third aspect of the invention, water can be automatically supplied from the water storage section to the panel body without using power such as a pump.

  A fourth invention is dependent on any one of the first to third inventions, and further includes a water supply receiving frame provided on a side portion of the panel body.

In the fourth invention, the cold insulation panel (12) further includes a water supply receiving frame ( 34 ). The water supply receiving frame is formed using, for example, an aluminum L metal fitting, and is provided so as to extend along the side surface of the panel main body (14). The water supply receiving frame receives water flowing in from a water supply source (50) or the like and temporarily stores it, and reinforces the strength of the cold insulation panel.

A fifth invention is dependent on any one of the first to fourth inventions, and further includes a reinforcing portion that partially covers the back surface of the panel body.

In the fifth invention, the cold insulation panel (12) includes the reinforcing portion (28). For example, the reinforcing portion is formed in a thin plate shape with a hole (30), or is provided so as to cover only a part of the back surface (14a) of the panel body (14). Cover.

According to 5th invention, the intensity | strength of a cold insulation panel can be reinforced, without inhibiting the water | moisture content evaporation from the back surface of a panel main body.

A sixth invention is a resting device comprising a cold insulation panel according to any one of the first to fifth inventions , and a support portion that supports the cold insulation panel in a state where the back surface of the panel main body of the cold insulation panel communicates with the outside. is there.

In the sixth invention, the resting device (10) is, for example, a resting device that a user sits on, rests on a user while standing, and a resting device that is used while lying down. ) And support portions (20, 22, 60, 64). The support portion supports the cold insulation panel in a state where the back surface of the panel main body (14) of the cold insulation panel communicates with the outside, that is, forms a space (26) communicating with the outside air on the rear surface side of the cold insulation panel.

According to the sixth aspect , similarly to the first aspect, the introduction cost and the operation cost can be reduced, and a cool feeling can be continuously given to the user.

7th invention is a chair provided with a seat part and a backrest part, and the backrest part is formed in the shape of a plate by cement gel which hardened cement, and has the panel body which has a continuous space at least connected to the back, and the surface of the panel body Including a metal cover to cover, and a support portion that supports the panel body in a state where the back surface of the panel body communicates with the outside, and evaporates the water held in the continuous gap of the panel body from the back surface of the panel body, The chair is characterized in that the surface of the backrest is cooled.

In the seventh invention, the chair (10) includes a seat portion and a backrest portion, and the backrest portion includes a panel body (14) , a cover (28), and a support portion (64). The panel body is formed into a plate shape by cement gel (50) and has continuous voids (52, 54, 56) communicating with at least the back surface (14a). The cover is made of metal and covers the surface of the panel body. The support portion supports the panel body in a state where the back surface of the panel body communicates with the outside, that is, forms a space (26) communicating with the outside air on the back surface side of the panel body. The back portion of the chair maintains the temperature of the surface (16) at a predetermined temperature that gives the user a cool feeling by evaporating the water retained in the continuous gap of the panel body from the back surface.

According to the seventh aspect , similarly to the first aspect, the introduction cost and the operation cost can be reduced, and a cool feeling can be continuously given to the user.

According to an eighth aspect of the present invention, there is provided a chair including a seat portion and a leg portion, wherein the seat portion is formed into a plate shape by cement gel obtained by hardening cement, and has a first panel body having a continuous space communicating with at least the back surface ; A metal cover that covers the surface of the one-panel body, and the legs support the first-panel body in a state where the back surface of the first-panel body communicates with the outside, The chair is characterized in that the surface of the seat is cooled by evaporating the retained water from the back surface of the first panel body.

In the eighth invention, the chair (10) includes a seat and legs (20, 22). The seat includes a first panel main body (14) and a cover (28) . The first panel main body is formed in a plate shape by cement gel (50) and communicates with at least the back surface (14a). 54, 56). The cover is made of metal and covers the surface of the first panel body. The leg portion forms a space (26) communicating with the outside air on the back side of the first panel body. The seat of this chair maintains the temperature of the surface (16) at a predetermined temperature that gives the user a cool feeling by evaporating the water retained in the continuous gap of the first panel body from the back surface.

According to the eighth invention, similarly to the first invention, the introduction cost and the operation cost can be reduced, and a cool feeling can be continuously given to the user.

A ninth invention is according to the eighth invention, further comprising a backrest portion, the backrest portion being formed in a plate shape by cement gel hardened cement, and having a continuous gap communicating with at least the back surface A main body, a metal cover that covers the surface of the second panel main body, and a support portion that supports the second panel main body in a state where the back surface of the second panel main body communicates with the outside. The surface of the backrest is cooled by evaporating the water held in the back from the back surface of the second panel body.

In the ninth invention, the chair (10) further includes a backrest portion, and the backrest portion includes a second panel body (14) , a cover (28), and a support portion (64). The second panel body is formed in a plate shape by cement gel (50) and has continuous voids (52, 54, 56) communicating with at least the back surface (14a). The cover is made of metal and covers the surface of the second panel body. The support portion forms a space (26) communicating with the outside air on the back side of the second panel body. The backrest part of this chair maintains the temperature of the surface (16) at a predetermined temperature that gives the user a cool feeling by evaporating the water retained in the continuous gap of the second panel body from the back surface.

According to the ninth aspect , since the surfaces of both the seat portion and the backrest portion of the chair are kept cold, a cool feeling can be given to the user more effectively.

A tenth aspect of the invention is dependent on any of the seventh to ninth aspects of the invention, and further includes a sunshade that covers the upper portion of the seat and blocks the solar radiation.

In the tenth invention, the chair (10) further includes a sunshade (68). The sunshade is formed of a parasol or the like and covers the upper part of the seat to block sunlight.

According to the tenth invention, a more comfortable space can be provided to the user even outdoors.

  According to the present invention, since the cold is maintained by evaporating the water held inside, there is no need to use a cooling electric device such as a compressor. Therefore, introduction cost and operation cost can be reduced.

  Moreover, since water | moisture content is evaporated from a back surface, even if a body adheres to the surface, surface temperature can be maintained at predetermined temperature, and a cool feeling can be continuously given to a user.

  The above object, other objects, features, and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

It is an illustration figure which shows schematically the external appearance of the chair of one Example of this invention. It is a top view which shows the external appearance of the surface of the cold insulation panel with which the chair of FIG. 1 is provided. It is a bottom view which shows the external appearance of the back surface of the cold insulation panel with which the chair of FIG. 1 is provided. It is sectional drawing which shows the cross section of the cold insulation panel in the IV-IV line of FIG. It is an illustration figure which shows typically the cross-section of the back surface part of a panel main body. It is a graph which shows the pF-moisture curve of a panel main body. It is sectional drawing which shows another example of a cold insulation panel, (A) is an example of the cold insulation panel which does not provide a cover, (B) is an example of the cold insulation panel which provided the cover on the back surface of the panel main body, (C) is water propagation An example of the cold insulation panel which provided the layer in the surface of the panel main body is shown. It is an illustration figure which shows schematically the external appearance of the chair of the other Example of this invention. It is an illustration figure which shows schematically the external appearance of the chair of the further another Example of this invention. It is an illustration figure which shows schematically the external appearance of the chair of the further another Example of this invention. It is an illustration figure which shows schematically the external appearance of the outdoor desk of other Example of this invention. It is a graph which shows the result of the cold insulation effect verification experiment of the cold insulation panel of one Example of this invention. It is a graph which shows the result of the cold insulation effect verification experiment of the chair of one Example of this invention.

  Referring to FIG. 1, a chair 10 according to an embodiment of the present invention includes a cold insulation panel 12 provided in a seat portion, and is installed fixedly or movable mainly outdoors. Then, water absorbed and held in the inside of the cold insulation panel 12 (specifically, a panel body 14 to be described later) is evaporated from the back surface 14a, whereby the temperature of the seat surface (the surface of the cold insulation panel 12) 16 is set to a predetermined temperature. Keep cool to give the user a cool feeling.

  The chair 10 includes a quadrangular frame 20. The frame 20 supports the peripheral part of the back surface (lower surface) of the cold insulation panel 12 used as a seat part. The cold insulation panel 12 may be simply placed on the frame body 20, but it is preferable to prevent a lateral shift or the like by providing an appropriate fixing tool. In addition, four leg portions 22 are provided on the lower surface of the frame body 20, and these four leg portions 22 are appropriately reinforced by cross bars 24. Such a leg portion 22 (including the frame body 20) is connected to the outside (outside air) on the back surface 14a side of the cold insulation panel 12 so as not to prevent evaporation of water from the back surface 14a of the cold insulation panel 12 (panel body 14). A communication space 26 is formed. In addition, the material of the frame 20, the leg part 22, and the crosspiece 24 is not specifically limited, Appropriate materials, such as a synthetic resin, a timber, a metal, and concrete, are employable.

  Then, with reference to FIGS. 2-4, the structure of the cold insulation panel 12 is demonstrated. As shown in FIG. 2-4, the cold insulation panel 12 includes a panel main body 14 having a cold insulation function by moisture evaporation. As will be described in detail later, the panel body 14 is formed in a predetermined shape and size by mixing and hardening cement, a porous body 26 and water, and the inside thereof is opened to communicate with the back surface 14a. Have continuous voids. In this embodiment, the panel main body 14 is a rectangular plate-like body, and the size thereof is 300 mm in length, 300 mm in width, and 30 mm in thickness.

  On the surface (upper surface) of the panel main body 14, a thin plate-like cover 28 formed of a metal having high thermal conductivity such as aluminum and stainless steel is provided. A plurality of holes 30 are formed in the cover 28 in a dispersed manner, and a part of the surface of the panel body 14 is exposed to the outside. In this embodiment, an aluminum punching produced by punching an aluminum plate with a mold is used as the cover 28. For example, the thickness of the cover 28 is 0.5 mm, and the diameter of the hole 30 is 2 mm. Such a cover 28 quickly homogenizes the temperature of the entire seat surface 16 of the chair 10. Further, if the cover 28 is formed of a material having a high light reflectance such as aluminum, the temperature rise itself of the surface 16 due to solar radiation can be suppressed.

  Further, the back surface (lower surface) 14a of the panel body 14 is provided with a water propagation layer 32 that extends from one end of the panel body 14 to the other end opposite to the panel body 14 and is in close contact with the back surface 14a to cover a part of the back surface 14a. The water propagation layer 32 is formed of a material excellent in water absorption, such as a nonwoven fabric (paper), a pile fabric, a chamois, and a sponge, and propagates water stored in a water supply receiving frame (fixing tool 34) described later to transmit the panel main body 14. To supply. In this embodiment, three water propagation layers 32 are provided in parallel at a predetermined interval. The width of the water propagation layer 32 is, for example, 50 mm, and the interval provided between the water propagation layers 32, that is, the width at which the back surface 14a of the panel body 14 is exposed to the outside is, for example, 35-40 mm.

  Both end portions of the water propagation layer 32 are fixed by a fixture 34 having an L-shaped cross section extending over the entire length of one end and the other end of the panel body 14. Further, the stopper 36 is mounted so as to cover the fixing member 34. In this embodiment, an aluminum L metal fitting having a thickness of 1 mm is used as the fixture 34 and the stopper 36. Such a fixture 34 and a stopper 36 also have a function of reinforcing the strength of the panel body 14, and the lower surface of the fixture 34 abuts on the upper surface of the frame body 20, thereby preventing the panel body 14 from being damaged. . Further, in order to prevent the central portion of the water propagation layer 32 from sagging and to bring the water propagation layer 32 and the panel body 14 into close contact with each other, the central portion of the water propagation layer 32 is appropriately attached to the panel body 14 with bolts, screws 38 or the like. Fixed.

  When the fixture 34 is attached to the panel body 14, a gap 40 of about 5-10 mm is formed between the vertical wall of the fixture 34 and one end (side surface) of the panel body 14, and water is supplied to the gap 40. One end of the tube 42 is connected. Further, water stop coking 46 is applied between both ends of the gap 40 and between the lateral wall of the fixture 34 and the back surface 14 a of the panel body 14, and the fixture 34 (gap 40) flows from the water supply tube 42. It functions as a water supply receiving frame that receives and temporarily stores water. When attaching the stopper 36 to the panel main body 14, a gap of about 1-2 mm is formed between the lateral wall of the stopper 36 and the upper surface of the cover 28 by inserting a spacer.

  As the water supply tube 42, a commercially available irrigation tube formed of a synthetic resin or the like can be used. The other end of the water supply tube 42 is connected to a water supply source 48 (see FIG. 1) such as a water pipe or a water tank, and water from the water supply source 48 is supplied to the gap 40 via the water supply tube 42. When the water supply source 48 is a water pipe, it is better to supply water using the water supply pressure from the water pipe. When the water supply source 48 is a water tank, a water pump is used or a difference in height is used. Water may be supplied using a natural flow method.

  Next, the configuration of the panel body 14 will be described in detail with reference to FIG. As shown in FIG. 5, the panel body 14 has a structure in which a porous body 26 is dispersedly arranged in the cement gel 50 in which cement is hardened and on the back surface 14 a, and the back surface 14 a is disposed inside the panel body 14. An infinite number of capillaries (continuous voids) that open to communicate with each other are formed. The innumerable capillaries include voids formed inside the porous body 26, between the adjacent porous bodies 26, between the porous body 26 and the cement gel 50, and inside the cement gel 50, or the like. It is a space | gap formed continuously mutually, and contains the 1st capillary part which hold | maintains a water | moisture content in the pF range of pF2.7-4.2.

  FIG. 5 is a schematic diagram for easily showing the cross-sectional structure in the vicinity of the back surface 14a of the panel body 14, and does not strictly indicate the number, size, shape, arrangement, and the like of the porous body 26 and the capillaries. . The pF value is a value obtained by expressing the strength (moisture potential) of the capillary that adsorbs and holds water as water column pressure (water column height), and the absolute value thereof as a common logarithm. The pF value is known as an index value representing the moisture state of the soil. In this embodiment, the pF value indicates whether or not the water retained in the panel body 14 is effectively utilized for evaporation from the back surface 14a. It is used as an index value.

  Various cements can be used as the cement used for the panel main body 14, and an inorganic cement or an organic cement such as a synthetic resin may be used. As the inorganic cement, for example, ordinary Portland cement or alumina cement can be suitably used. Ordinary Portland cement is widely available and easy to obtain and inexpensive, so it is economical, and the panel body 14 formed using this is white or light in color, so the surface reflectance of light is high, It is difficult for surface temperature to increase due to solar radiation. Further, if the panel body 14 is formed using alumina cement, a dense composition can be made, so that it is easy to form a thin capillary, and excellent in corrosion resistance, cold resistance, heat resistance, and the like. Moreover, since the cement gel 50 which hardened the inorganic cement has hydrophilicity, the adhesive force of water is large. For this reason, since the water easily moves in the capillary and the water easily spreads on the back surface 14 a of the panel body 14, the inorganic cement is suitable for forming the panel body 14.

  In addition, a single cement can also be used for the panel main body 14, and several cement can also be mixed and used. Moreover, an additive can also be mix | blended with cement, for example, an aggregate can be mix | blended with an inorganic cement and it can also be set as concrete or mortar. Furthermore, the inorganic cement can be fired or the like to form a ceramic.

  The porous body 26 is a granular body having a large number of fine voids (first voids 52) therein. The particle size of the porous body 26 is not particularly limited, but is preferably 0.5 mm to 2.0 mm, and in particular, those having a particle size of about 1.0 mm are preferable. It is because the intensity | strength of the panel main body 14 will fall when a particle size is too large. Further, if the particle diameters are not uniform, the porous bodies 26 with small particle diameters may fill the gaps between the adjacent porous bodies 26, or the bias of the arrangement of the porous bodies 26 may increase. This is because the second gap 54 described later may not be properly formed.

  Moreover, it is preferable that the magnitude | size (cross-sectional area) of the 1st space | gap 52 of the porous body 26 is a magnitude | size comparable as the diameter of the 2nd space | gap 54, and the 1st space | gap 52 is pF2.7 ~ A capillary that retains moisture in the 4.2 pF range is preferred.

  Specifically, as the porous body 26, calcium silicate heat insulating material, rock wool heat insulating material, diatomaceous earth fired particles, zeolite, peat, charcoal, vermiculite, bentonite, perlite, activated carbon, and the like can be used. Further, organic or inorganic fibers rounded into a substantially spherical shape can be used.

  Among them, in particular, the calcium silicate heat insulating material can be suitably used as the porous body 26. Calcium silicate heat insulating material is a heat insulating material used in piping facilities of thermal power plants, and a large amount of waste material is generated during periodic inspection of piping facilities. Conventionally, the waste material of the calcium silicate heat insulating material is disposed as landfill as industrial waste. However, if it is effectively used as the porous body 26 of the panel body 14 as described above, problems associated with landfill disposal (for example, disposal cost and disposal) To secure a place). Moreover, the calcium silicate heat insulating material has many voids for retaining water in the pF region of pF 2.7 to 4.2. In particular, the pF region of pF 3.0 to 4.0 has a volume water content. It can hold about 50% water at a rate.

  The mixing ratio of the cement and the porous body 26 is appropriately determined based on the types of the cement and the porous body 26, the required performance of the panel body 14, and the like, but with the volume ratio (cement: porous body 26), It is desirable to be within the range of 2: 8 to 6: 4. This is because if the proportion of the cement is too small, the panel body 14 cannot be manufactured because it does not have a certain shape, and if the proportion of the cement is too large, high water retention, which is one of the characteristics of the panel body 14, cannot be exhibited appropriately. Because there are cases.

  In the panel main body 14 of this example, ordinary Portland cement (manufactured by Aso Lafarge Cement Co., Ltd.) was used as the cement. Moreover, the porous body 26 used the granular material which grind | pulverized the waste material of the calcium-silicate heat insulating material to the particle size of about 1.0 mm using the cutting machine (Hitachi Koki Co., Ltd. cross-cut saw, C7RSH). The cement: porous body ratio was 35:65 by volume.

  Further, as will be described in detail later, water added at the time of manufacturing the panel body 14 is used for hardening the cement and is once held in the porous body 26 (first gap 52) to be second gap 54. And used for forming the third gap 56. Therefore, the amount of water added at the time of manufacture is larger than the amount of water added at the time of producing normal concrete, mortar, etc., and the water / cement ratio when manufacturing the panel main body 14 becomes high.

  Below, an example of the manufacturing method of the panel main body 14 is demonstrated. In addition, the upper surface side at the time of this manufacture becomes the back surface 14a of the panel main body 14.

  First, a predetermined amount of porous body 26 and cement are kneaded and mixed in a dry state, and then water is added and kneaded. Next, the kneaded mixture is put into a mold and the upper surface is smoothed, and then vibration is applied to remove air mixed during the kneading to remove bubbles floating on the upper surface. Subsequently, the panel main body 14 is obtained by removing the mold after moist curing for 24 hours in a room kept at high humidity and further curing in the air for 28 days.

  In manufacturing the panel body 14, a part of the water added to the mixture of the cement and the porous body 26 is used for hardening the cement, and the other part is the first void 52 of the porous body 26. Absorbed and retained. During curing, that is, when the cement hardens to form a cured product, water in the first gap 52 of the porous body 26 flows out and travels around the porous body 26 or the cement gel 50. It is discharged from the upper surface of the cured product to the outside through the inside. By discharging water through the periphery of the porous body 26, a second void 54 is formed between the porous body 26 and the cement gel 50 or between adjacent porous bodies 50. The second gap 54 appropriately joins the first gap 52 and other second gaps 54 of the adjacent porous body 26 and communicates with the upper surface. On the other hand, by discharging water through the interior of the cement gel 50, innumerable third voids 56 extending from the porous body 26 toward the upper surface are formed in the cement gel 50. The third gap 56 also merges with the other gaps 52, 54, 56 as appropriate, and communicates with the upper surface. Note that the second void 54 is formed along the periphery of the porous body 26 and easily merges with the other second voids 26, and thus has a wide cross section. For this reason, the size (cross-sectional area) of the second gap 26 is larger than the diameter of the third gap 56.

  The first gap 52, the second gap 54, and the third gap 56 form innumerable capillaries that allow the inside of the panel body 14 to communicate with the upper surface. Among these, the capillary formed by the first gap 52 and the second gap 54 is mainly the first capillary section that retains water in the pF range of pF2.7 to 4.2. Specifically, a capillary in which the first void 52 or the second void 54 communicates (opens) directly with the upper surface when a part of the porous body 26 is exposed on the upper surface, and other first voids 52 or A capillary or the like in which the second gap 54 is continuously formed becomes the first capillary portion. In addition, the capillary communicating with the upper surface via the third gap 56 is mainly a second capillary part having a smaller diameter than the first capillary part. Specifically, a capillary or the like in which the first gap 52 and the second gap 54 are continuously formed in the third gap 56 communicating with the upper surface is the second capillary section.

  However, among the first gap 52 and the second gap 54, a gap having a small diameter, for example, a gap in which the cement gel 50 enters the first gap 52 and its cross-sectional area is reduced forms a second capillary portion. There is also a case. In addition, among the third gaps 56, a gap having a large diameter, for example, a gap in which the third gaps 56 merge to increase the cross-sectional area may form the first capillary portion.

  Each of the air gaps 52, 54, and 56 (continuous air gap) opens to communicate with the lower surface (the surface of the panel body 14) and the side surface, but has a smaller numerical aperture than the upper surface. For this reason, the evaporation of water from the panel body 14 described later is performed mainly from the upper surface (back surface 14a).

  In such a panel main body 14, the effect which suppresses a temperature rise is exhibited by evaporating the water hold | maintained at the continuous space | gap. At this time, it is preferable that the continuous gap includes more first capillary portions communicating with the back surface 14a. This is because, even if the diameter of the continuous gap is too large or too small, the area of water that spreads out from the opening of one capillary to the back surface 14a is narrowed, so a water layer that spreads in a thin film shape on the entire back surface 14a This is because when the water evaporates on the back surface 14a, water cannot be replenished quickly to the back surface 14a. In other words, the pF region holding water must not be too high or too low.

  In that respect, the first capillary section that holds water in the pF range of pF 2.7 to 4.2 holds water with an appropriate force. When the water becomes wider and the water evaporates from the back surface 14a, the water is quickly supplied to the back surface 14a. That is, the water held inside can be appropriately supplied to the back surface 14a. Thereby, in the panel main body 14, since the state where water spreads in a thin film shape is maintained on the entire back surface 14a, the evaporation amount of water from the back surface 14a increases, and the evaporation rate of water increases. Therefore, if many 1st capillary parts are formed in the panel main body 14, the panel main body 14 comes to be able to exhibit the outstanding temperature rise inhibitory effect. Moreover, since the 1st capillary part hold | maintains water with moderate force, it can absorb the supplied water quickly and the panel main body 14 comes to be excellent in water absorption.

  As described above, the first capillary section that retains water in the pF range of pF 2.7 to 4.2 adds more water than is necessary for cement hardening when the panel body 14 is manufactured. It can be formed by forming voids by the action of water held in the porous body 26. In addition, by selecting and using the porous body 26 having innumerable voids that retain moisture in the pF range of pF 2.7 to 4.2, more first capillary portions can be formed in the panel body 14. it can.

  FIG. 6 shows a pF-water curve of the panel body 14 of this example. The volumetric water content at each pF value was measured by referring to “Soil Standard Analysis / Measurement Method (edited by Soil Standard Analysis Method / Measurement Committee, supervised by Japanese Society of Soil Fertilizer, 1986 edition)”. Specifically, pF0 is a vacuum saturation method, pF1.5 is a sand column method, pF1.8 to 3.0 is a pressure plate method, pF3.8 to 4.2 is a centrifugal method, and pF7 is a heat loss. Each was measured by the method. In addition, when measuring the volume moisture content of each pF value, it arrange | positioned in the analyzer so that the back surface 14a may become a lower side. This is because the panel main body 14 mainly evaporates water from the back surface 14a, so it is necessary to know how water is discharged from the back surface 14a.

  As shown in FIG. 6, the volumetric water content at pF1.8 of the panel body 14 of this example is about 70%. In general, water in a pF region lower than pF1.8 naturally flows down from the panel body as gravity water, and water in a pF region of pF1.8 or more is known to be retained in the panel body as capillary water. Therefore, it can be said that the panel main body 14 of this embodiment has very excellent water retention. Moreover, it turns out that 17.8% of water is hold | maintained by the volume moisture content in the pF area | region of pF2.7-4.2.

  In the above-described manufacturing method, the upper surface used as the back surface 14a is leveled before curing, and then the cured product manufactured with the upper surface as it is is used as the panel body 14. However, a large number of fine irregularities over the entire back surface 14a can be formed on the panel body 14 by cutting the upper surface (back surface 14a) of the cured product. The unevenness may be formed in a groove shape or a waveform that extends linearly in one direction and a flat surface inclined in the orthogonal direction is repeated, and the depth and pitch of the unevenness may be set to, for example, 1 to 2 mm. By forming such irregularities on the back surface 14a, the area of the back surface 14a increases, the apparent contact angle of water droplets on the back surface 14a decreases, and water easily spreads wide and thinly on the back surface 14a.

  Moreover, when manufacturing the panel main body 10, you may make it apply a pressure with respect to an upper surface (back surface 14a). Since this pressure is more effective as the pressure is applied to the surface, the second and third gaps 54 and 56 closer to the back surface 14a are compressed, and the second and second air gaps 54 and 56 are compressed from the front surface of the panel body 14 toward the back surface 14a. The diameters (thicknesses) of the three gaps 54 and 56 are gradually reduced. Since the force that sucks up the water held in the capillary by capillary action increases as the capillary becomes thinner, the water held in the capillary moves toward the narrower side of the capillary. That is, if the thickness of the capillary is gradually reduced from the front surface of the panel body 14 toward the back surface 14a, moisture in the capillary can easily move toward the back surface 14a of the panel body 14, Moisture evaporation is promoted.

  If pressure is applied when manufacturing the panel body 14, the cement with high fluidity moves upward, and the proportion of the cement gel 50 in the vicinity of the upper surface of the cured product increases. If the vicinity of the upper surface is cut, a large number of capillary openings can be reliably formed on the back surface 14a of the panel body 14. Moreover, the diameter and number of capillaries can be controlled by appropriately adjusting the pressure applied to the mixture and controlling the flow direction and flow rate of the water that moves during compression dehydration.

  In the above manufacturing method, when the panel body 14 is manufactured, water is added after kneading the cement and the porous body 26, but the porous body 26 absorbs water in advance, You may make it knead | mix the porous body 26 containing, cement, and water.

  Then, returning to FIGS. 1-4, the effect of the chair 10 of the above structures is demonstrated. In the chair 10, when water is supplied from the water supply source 48, the water flows into the gap 40 on the fixture 34 through the water supply tube 42 and is temporarily stored there. The temporarily stored water is mainly absorbed by the water propagation layer 32 by the capillary phenomenon and propagated to the back surface 14a of the panel body 14, and from the opening formed in the back surface 14a, the continuous voids (gap 52) in the panel body 14 by the capillary phenomenon. , 54, 56). A part of the temporarily stored water overflows from a gap formed between the stopper 36 and the cover 28, flows over the upper surface of the cover 28, and is temporarily stored in the gap 40 at the opposite position. The water in the gap 40 at the opposite position is also absorbed by the water propagation layer 32, propagated to the back surface 14a of the panel body 14, and absorbed from the back surface 14a. A part of the water flowing on the upper surface of the cover 28 is transmitted from the hole 30 of the cover 28 to the surface of the panel main body 14 and is absorbed by the continuous gap in the panel main body 14 from the opening of the surface. The water absorbed in the continuous gaps in the panel body 14 from the openings formed in the back surface 14a and the front surface sequentially moves in the continuous gaps, permeates the entire panel body 14, and is held in the continuous gaps.

  And the water hold | maintained in the continuous space | gap of the panel main body 14 evaporates suitably from mainly the back surface 14a of the panel main body 14 according to the surrounding environmental condition. In particular, when the ambient air temperature rises or the panel body 14 is warmed, the water existing in a thin film form on the back surface 14a is actively evaporated. At this time, when the water in the vicinity of each opening of the continuous gap evaporates, the water held in the continuous gap in the vicinity of the evaporated water exits from each opening to the back surface 14a due to intermolecular force or capillary phenomenon, and forms a thin film. To spread. Further, as the water held in the vicinity of the back surface 14a moves to the back surface 14a, the water held further inside the panel body 14 sequentially moves by capillary action and exits from each opening to the back surface 14a. That is, as the water in the back surface 14a evaporates, the water in the panel body 14 is sequentially supplied to the back surface 14a through the continuous gap, and is sequentially evaporated from the back surface 14a. In addition, although water evaporates also from the surface of the panel main body 14, the amount is small compared with the evaporation amount from the back surface 14a.

  When water evaporates from the back surface 14a of the panel body 14, the heat of the panel body 14 is taken away by the evaporation heat (heat of vaporization), and the panel body 14 is cooled from the back surface 14a side. Since the panel body 14 is formed in a plate shape and its thickness is small, this cooling effect acts on the entire panel body 14 and the surface of the panel body 14 is also cooled (cold). When the surface of the panel body 14 is cooled, the cooling effect is transmitted to the cover 28 and homogenized quickly as a whole, and the temperature of the upper surface of the cover 28, that is, the seat surface 16 of the chair 10 is cooled. At this time, the amount of evaporation from the back surface 14a increases as the ambient temperature increases, and the amount of evaporation decreases as the ambient temperature decreases, so the temperature of the seat surface 16 is maintained at a predetermined temperature. That is, the chair 10 cannot strictly control the surface temperature of the seat, but can maintain a temperature that gives the user a moderate cool feeling even if the ambient temperature changes. Specifically, in order to give the user a cool feeling, the temperature of the seat surface 16 is maintained at least lower than the body temperature, and preferably 25 to 35 ° C., which is a temperature that gives a moderate cool feeling without being excessively cooled. Preferably, the temperature of the seat surface 16 is maintained at 28-33 ° C.

  Even if the user sits on the seat of the chair 10 and the opening on the surface of the panel body 14 is blocked, the evaporation of water from the back surface 14a of the panel body 14 is maintained without being inhibited. Therefore, even if the seat surface 16 is warmed by the user's body temperature, the seat surface 16 is immediately cooled by the evaporation of water from the back surface 14a of the panel body 14, and the seat surface 16 is kept at a predetermined temperature. Furthermore, by providing a cover 28 with high thermal conductivity on the upper surface of the panel body 14, heat can be easily dispersed in areas other than the close contact portion between the body such as the buttocks and thighs and the seat surface 16 (the surface of the cold insulation panel 12). Thus, since the entire panel body 14 can be cooled, the seat surface 16 is easily cooled.

  In addition, although the continuous space | gap in the panel main body 14 is opened also on the surface, since the diameter is small and a water absorption power (water retention) is stronger than a user's clothes, it is clothes by the water hold | maintained in the continuous space | gap. And your skin won't get wet. Further, since water is not rapidly evaporated as in boiling, clothes and skin are not wetted by water vapor from the front surface or the back surface 14a.

  According to this embodiment, since the seat surface 16 is kept cold by evaporating the water held inside, it is not necessary to use a cooling electric device such as a compressor. Therefore, it can be manufactured at low cost and does not incur operating costs. The panel body 14 is cooled from the back surface 14a side. However, since the panel body 14 is formed in a plate shape and has a small thickness, the cooling effect acts on the entire panel, and the seat surface 16 is also appropriately formed. It is cooled (cold).

  Further, since water is evaporated from the back surface of the seat portion (specifically, the back surface 14a of the panel body), even if the user's body is in close contact with the seat surface 16, water can be continuously evaporated. Therefore, the temperature of the seat surface 16 can be kept at a predetermined temperature, and a cool feeling can be continuously given to the user.

  Furthermore, if the cold air is blown directly on the human body as in the technique of Patent Document 1 described above, the body may become too cold or adversely affect people with asthma. Such problems are also resolved.

  In the above-described embodiment, the metal cover 28 is provided on the surface of the panel body 14. However, as shown in FIG. 7A, the cold insulation panel 12 may not be provided with the cover 28. In the above-described embodiment, aluminum punching is used as the cover 28, but the size and shape of the hole 30 are not particularly limited. For example, a wire net (metal knitted through a square or rhombus) is used. It can also be used. Further, it is possible to completely cover the upper surface of the panel body 14 with the cover 28 using the cover 28 in which the holes 30 are not formed.

  Further, as shown in FIG. 7B, the cover 28 can be provided on the back surface 14 a of the panel body 14. For example, the cover 28 may be provided so that the water propagation layer 32 is sandwiched between the panel body 14 and the cover 28, whereby the water propagation layer 32 can be properly adhered to the back surface 14 a of the panel body 14. However, when the cover 28 is provided on the back surface 14a of the panel body 14, a hole 30 is formed in the cover 28 or the cover 28 is provided only on a part of the back surface 14a so as not to prevent moisture evaporation from the back surface 14a. It is necessary to do. Thus, by providing the cover 28 on the back surface 14a of the panel body 14, the strength of the cold insulation panel 12 can be increased. That is, the cover 28 functions as a reinforcing portion that partially covers the back surface 14 a of the panel body 14.

  In the above-described embodiment, the water propagation layer 32 is provided on the back surface 14a of the panel body 14. However, the water propagation layer 32 can be provided on the surface of the panel body 14 as shown in FIG. It can also be provided on both the back surface 14a and the front surface. However, when the water propagation layer 32 is provided on the surface of the panel body 14, the cover 28 without the holes 30 is essential so that the user does not get wet when the user sits down. Further, since it is not necessary to consider the inhibition of moisture evaporation as in the case where the water propagation layer 32 is provided on the back surface 14a, the water propagation layer 32 may be provided so as to cover the entire surface of the panel body 14.

  Further, in the above-described embodiment, water is supplied from the water supply source 48 to the gap 40 on the fixture 34 through the water supply tube 42 and then supplied to the panel body 14 through the water propagation layer 32. However, the method of supplying water to the panel body 14 is not limited to this. For example, a water supply port may be provided in the upper portion of the stopper 36, and water may be manually supplied from the water supply port to the gap 40 on the fixture 34. Further, the cold insulation panel 12 is provided so as to be detachable from the chair 10 (frame body 20), and when supplying water to the panel body 14, the cold insulation panel 12 may be removed and directly immersed in a water tank or the like. Good. Furthermore, when the cold insulation panel 12 is not detachable, the cold insulation panel 12 can be directly immersed in the water tank by tilting the entire chair 10 or the like. Further, when the cover 28 is not provided on the panel body 14 or when the cover 28 having the holes 30 is provided, water may be supplied to the panel body 14 by watering the front surface or the back surface 14a of the panel body 14. Good.

  In addition, for example, a water tank is installed under the seat portion of the chair 10, and one end of the water propagation layer 32 is provided to extend to the water tank, and water is directly supplied from the water tank to the panel body 14 using the water propagation layer 32. You can also In this case, the water stored in the water tank propagates through the water propagation layer 32 by capillary action and is sequentially supplied to the panel body 14. That is, water can be continuously and automatically supplied to the panel body 14 by the amount of water evaporated from the panel body 14 without using power such as a pump. In addition, these inventors used 30 cm of the panel main body 14 using the nonwoven fabric (the kitchen towel WRG22 by Oji Napier Co., Ltd.), the artificial chame (the synthetic chame F18 by Cretom Co., Ltd.), and the main skin chame. When a water supply experiment was performed from the water tank installed below to the panel main body 14, it was confirmed that the water supply to the panel main body 14 was satisfactorily performed in any water propagation layer 32. In addition, the effect of cooling the surface of the panel body 14 can be maintained for about 15 hours in a state where the panel body 14 is sufficiently retained by water, although it depends on the surrounding environmental conditions. On the other hand, it has been confirmed that if the panel body 14 is continuously supplied with water from the water tank through the water propagation layer 32, the cooling effect can be maintained almost indefinitely.

  In addition, when it is not necessary to keep the seat surface 16 of the chair 10 cold, such as in winter, if the water supply to the panel body 14 is not performed, the cold keeping function due to moisture evaporation is stopped. The chair 10 can be used in the same manner as a conventional concrete chair.

  In the above-described embodiment, the surface of the cold insulation panel 12 is kept cold by evaporating the water held inside the panel body 14, that is, the cement is used as a portion (water holding layer) that holds and evaporates water. Although the panel body 14 formed by curing is used, the present invention is not limited to this, and a material having excellent water absorption such as nonwoven fabric (paper), pile fabric, chamois, and sponge is used for the portion that holds and evaporates water. It can also be used. That is, the cold insulation panel 12 can also be comprised by a plate-shaped body and water retention layers, such as a nonwoven fabric provided in the back surface of a plate-shaped body, without using the panel main body 14. FIG. In this case, the plate-like body may be formed into a thin plate shape with a metal having high thermal conductivity such as aluminum and stainless steel. Even with such a cold insulation panel 12, the surface 16 of the cold insulation panel 12 (plate-like body) can be cooled by moisture evaporation from the back surface of the water retention layer. However, when the panel main body 14 is not used, the cold insulation effect is small and the variation in the surface temperature is large. Therefore, it is preferable to use the panel main body 14 for the cold insulation panel 12.

  Furthermore, in the above-described embodiment, the chair 10 having no backrest or armrest is given as an example. However, the chair 10 may have a backrest or an armrest, and the cold insulation panel 12 may be provided on the backrest or the armrest. Can also be provided.

  For example, a chair 10 according to another embodiment of the present invention shown in FIG. 8 is provided with a cold insulation panel 12 in a backrest portion in addition to a seat portion. As the cold insulation panel 12 used as the backrest portion, the same one as the cold insulation panel 12 used as the seat portion can be used, or one having a different structure such as a different water supply means to the panel body 14 is used. You can also

  The chair 10 shown in FIG. 8 is provided with a backrest portion in addition to the chair 10 shown in FIG. 1, and supports the second leg portion 60 that extends obliquely on both sides of the leg portion 22 and the second leg portion 60. A support portion 62 is provided. A support part 64 formed in the shape of a rectangular frame is provided on the upper part of the second leg part 60, and the cold insulation panel 12 is provided on the support part 64. The support portion 64 supports the peripheral edge portion of the cold insulation panel 12 and forms a space 26 communicating with the outside on the back surface 14a side of the cold insulation panel 12 (specifically, the panel body 14). Similarly to the cold insulation panel 12 provided in the seat portion, the cold insulation panel 12 provided in the backrest portion also evaporates the water retained in the continuous gap of the panel main body 14 from the back surface 14a of the panel main body 14, thereby Since the surface 16, that is, the surface 16 of the backrest portion is kept cold, even if the user's body is in close contact with the surface 16 of the backrest portion, water can be evaporated continuously. Therefore, the temperature of the surface 16 of the backrest portion can be kept at a predetermined temperature, and a cool feeling can be continuously given to the user.

  Moreover, the chair 10 can also be formed in the shape of a chaise longue (bench) instead of a chair for one person. In this case, for example, a seat portion or a backrest portion may be formed by one panel main body 14 (cold insulation panel 12) of 30 cm in length × 100 cm in width, or as shown in FIG. It may be arranged side by side. Of course, the planar view shape of the panel body 14 (the cold insulation panel 12) is not limited to a square or a rectangle, and can be formed in an appropriate shape such as a circle, an ellipse, or a triangle. In the embodiment shown in FIG. 9, the adjacent cold insulation panels 12 are connected by a water supply tube 42 so that water from the water supply source 50 is supplied to each panel body 14.

  Moreover, as shown in FIG. 10, the chair 10 may further include a awning portion 68 that covers the upper portion of the seat portion and blocks sunlight. Since it is more comfortable to stay in the shaded state than a state where the user is exposed to direct sunlight, if a sunshade portion 68 that blocks the sunlight is provided, a more comfortable space can be provided to the user even outdoors.

  Furthermore, as shown in FIG. 11, if a chair 10, a parasol 70 and a desk 72 are combined and used as an outdoor table set 74, a more comfortable space can be provided to the user.

  In addition, the cold insulation panel 12 is not limited to a resting device that is used while sitting down, that is, the chair 10, for example, a resting device that is used while standing by a user or a resting device that is used while lying down. It can also be applied.

  Furthermore, the user includes animals other than humans, and the cold insulation panel 12 and the resting device using the same may be used by animals such as cats and dogs. For example, if the cold insulation panel 12 is provided in a floor board portion such as a doghouse, a cooling effect can be continuously given to an animal lying on the floor board over a long period of time. However, it is necessary to provide a space communicating with the outside on the back surface side of the floor board so that moisture can be efficiently evaporated from the back surface.

  In addition, the cold insulation panel 12 and a resting device using the same are preferably installed outdoors because they evaporate moisture, but can also be installed indoors. When installing indoors, it is preferable to take measures against moisture such as ventilation as appropriate.

  Hereinafter, the result of having conducted the verification experiment of the cold insulation effect with respect to the cold insulation panel 12 and the chair 10 is shown.

  FIG. 12 shows the results of examining the change over time in the surface temperature (cold insulation effect) when the cold insulation panel 12 is installed alone outdoors in the summer and is exposed to solar radiation. For the cold insulation panel 12, the panel 1 having only the panel body 14 was used as the specimen 1, and the panel 2 was covered with an aluminum cover 28 having holes 30 on the surface of the panel body 14. Prior to the experiment, the panel main body 14 was sufficiently kept with water, and when installing the cold insulation panel 12, a 15 mm gap (a space communicating with the outside air) was opened on the back surface 14a side. The water evaporation from 14a was not inhibited. A temperature logger manufactured by Hioki Electric Co., Ltd. was used for measuring the surface temperature. In addition, as a comparative example, assuming a wooden chair often seen outdoors, the time change of the surface temperature when the plywood board is installed in the same manner as the specimens 1 and 2 is also shown.

  As shown in FIG. 12, the surface temperature of the plywood board of the comparative example greatly fluctuates according to changes in air temperature and solar radiation intensity, becomes a temperature higher than the air temperature, and often sees a time zone in which it exceeds 36 ° C. (body temperature). It was. On the other hand, the surface temperature of the specimens 1 and 2 (the cold insulation panel 12) is affected by the solar radiation intensity, but is maintained at a temperature of approximately 28 to 33 ° C. while maintaining a temperature substantially equal to or lower than the air temperature. I was drunk. The fluctuation range of the surface temperature was also smaller than that of the comparative example. From this experimental result, it can be seen that the cold insulation panel 12 can maintain the surface temperature between 28 and 33 ° C., which is a temperature that gives a moderate cool feeling without excessively cooling the body.

  FIG. 13 also shows the surface temperatures of the seat and back when the chair 10 is installed outdoors in the summer and a plurality of subjects (a total of 24 people regardless of age or sex) sit on the seat (back surface). Temperature and back surface temperature) are shown with time. In this experiment, a chair 10 in which a cold insulation panel 12 is provided on a seat portion and a backrest portion is used, and for this cold insulation panel 12, a panel body 14 whose surface is covered with an aluminum cover 28 (without a hole 30) is used. It was. In addition, the water supply to the panel main body 14 was performed in the evening of the day before the experiment day, and the panel main body 14 was sufficiently kept with water.

  As shown in FIG. 13, the seat surface temperature was an average of 2.1 ° C. lower than the air temperature, and the back surface temperature was an average of 2.7 ° C. lower than the air temperature. Moreover, although the air temperature exceeded 30 ° C., the seat surface temperature and the back surface temperature of the chair 10 both remained around 30 ° C. without exceeding the air temperature. In addition, although illustration is abbreviate | omitted, the humidity in the experiment time zone has changed about 50%.

  From this experimental result, the chair 10 (cold insulation panel 12) can change the seat surface temperature and the back surface temperature between 28 to 33 ° C., which is a temperature that gives a moderate cool feeling without excessively cooling the body by one water supply. It can be seen that it can be maintained for more than 5 hours.

  In addition, when the users were asked to give their thoughts when they were actually sitting, most of them expressed the opinion that “the seat and the back were both cool and comfortable, and they could stay for hours”. This is because the surface 16 of the cold insulation panel 12 is not warmed by the user's body temperature, or is cooled immediately even when warmed, so that a moderate temperature can be maintained. In addition, the user's impression was divided into the user who feels cooler on the seat surface and the user who feels cooler on the back surface, but cold spot density (density of sensory points feeling cold) and cold sensitivity. The back is higher than the buttocks. For this reason, it is thought that the direction which provided the cold insulating panel 12 in the backrest part can give a user a cool feeling more effectively.

DESCRIPTION OF SYMBOLS 10 ... Chair 12 ... Cold insulation panel 14 ... Panel main body 14a ... The back surface of a panel main body 16 ... Seat surface (surface of a cold insulation panel)
26 ... porous body 28 ... cover (reinforcement part)
32 ... Water propagation layer 34 ... Fixing fixture (water supply frame)
50 ... Cement gel 52, 54, 56 ... Panel body gap 68 ... Sunshade

Claims (10)

It is a cold insulation panel used for the part whose surface is in close contact with the body,
A panel body formed into a plate shape by cement gel obtained by hardening cement , and having a continuous gap communicating with at least the back surface ; and
A metal cover that covers the surface of the panel body,
The cold insulation panel characterized in that the surface of the cold insulation panel is kept cold by evaporating the water held in the continuous gap from the back surface of the panel body .   The said continuous space | gap is a cold insulation panel of Claim 1 containing the 1st capillary part which hold | maintains water in pF range of pF2.7-4.2.   The cold insulation panel according to claim 1, further comprising a water propagation layer that is provided in close contact with at least one of the front surface and the back surface of the panel main body and propagates water to the panel main body using a capillary phenomenon.   The cold insulation panel in any one of Claims 1 thru | or 3 further provided with the water supply receiving frame provided in the side part of the said panel main body. The cold insulation panel in any one of Claims 1 thru | or 4 further equipped with the reinforcement part which partially covers the back surface of the said panel main body. A resting device comprising: the cold insulation panel according to any one of claims 1 to 5 ; and a support portion that supports the cold insulation panel in a state where a back surface of a panel body of the cold insulation panel is in communication with the outside. In a chair having a seat and a backrest,
The backrest part is
A panel body formed into a plate shape by cement gel obtained by hardening cement, and having a continuous gap communicating with at least the back surface;
A metal cover that covers the surface of the panel body, and a support portion that supports the panel body in a state where the back surface of the panel body communicates with the outside,
The chair is characterized in that the surface of the backrest portion is kept cool by evaporating water held in the continuous gap of the panel body from the back surface of the panel body. In a chair with a seat and legs,
The seat includes a first panel body formed in a plate shape by cement gel obtained by curing cement, and having a continuous gap communicating with at least the back surface, and a metal cover that covers the surface of the first panel body. ,
The leg portion supports the first panel body in a state where the back surface of the first panel body communicates with the outside.
The chair is characterized in that the surface of the seat is kept cool by evaporating water held in the continuous gap of the first panel body from the back surface of the first panel body. It also has a backrest,
The backrest portion is formed in a plate shape by cement gel obtained by hardening cement, and has a second panel body having a continuous gap communicating with at least the back surface;
A metal cover that covers the surface of the second panel body; and a support portion that supports the second panel body in a state where the back surface of the second panel body is in communication with the outside.
The chair according to claim 8 , wherein the surface of the backrest portion is kept cold by evaporating water held in the continuous gap of the second panel body from the back surface of the second panel body. The chair according to any one of claims 7 to 9 , further comprising a sunshade that covers the upper part of the seat and blocks sunlight.

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