Cooling structure utilizing underground heat

Abstract

To simplify a cooling object cooling structure while cooling a cooling object.SOLUTION: A cooling structure utilizing underground heat comprises a seating face 54T of a chair 10 provided on the ground, and a heat conduction member 20 which has an underground part 22 buried in the ground and which cools the seating face 54T by transferring the underground heat to the seating face 54T of the chair 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] 2. Description of the Related Art A heated bench having an electric heating panel on the seat surface is known (see, for example, Patent Document 1).

[0003] Also known is a heat storage type heated carpet that includes a heater and a heat storage material that is heated by the heater (see, for example, Patent Document 2).

[0004] Furthermore, a cooling and heating system that utilizes geothermal heat is known (see, for example, Patent Document 3). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2001-336774 A [Patent Document 2] JP 2000-184935 A [Patent Document 3] JP 2010-019502 A Summary of the Invention [Problem to be solved by the invention]

[0006] Incidentally, as a measure against the heat, for example, it is conceivable to cool objects to be cooled, such as the seat of a bench installed outdoors, by using groundwater or a Peltier element (thermoelectric element).

[0007] In this case, however, a mechanism for supplying groundwater to the object to be cooled and a mechanism for supplying electricity to the Peltier element are required, which may complicate the cooling structure.

[0008] In consideration of the above, an object of the present invention is to simplify the cooling structure of an object to be cooled while still cooling the object to be cooled. [Means for solving the problem]

[0009] The geothermal heat utilization cooling structure described in claim 1 comprises an object to be cooled provided on the ground, and a thermal conductive member having a subterranean portion buried in the ground, which conducts geothermal heat to the object to be cooled and cools the object to be cooled.

[0010] According to the geothermal heat utilization cooling structure of claim 1, the object to be cooled is provided on the ground. The heat conductive member has an underground portion buried in the ground. The heat conductive member conducts geothermal heat to the object to be cooled, thereby cooling the object to be cooled.

[0011] In this way, the present invention cools an object by conducting geothermal heat (cold heat) to the object through a thermal conductive member. Therefore, the present invention can simplify the cooling structure of the object compared to a cooling structure that cools the object using groundwater or a Peltier element, for example.

[0012] The geothermal energy utilization cooling structure described in claim 2 is the geothermal energy utilization cooling structure described in claim 1, in which the object to be cooled is movable between a heat transfer position where heat can be transferred to the heat conduction member and an insulating position where it is insulated from the heat conduction member.

[0013] According to the geothermal heat utilization cooling structure of claim 2, the object to be cooled is movable between a heat transfer position where heat can be transferred to the heat conductive member and a heat insulating position where the object is insulated from the heat conductive member.

[0014] Here, for example, in summer, when an object to be cooled is cooled by the heat conductive member, there is a possibility that condensation will occur on the object to be cooled.

[0015] In contrast, in the present invention, as described above, the object to be cooled is movable between the heat transfer position and the heat insulation position. When the object to be cooled moves from the heat transfer position to the heat insulation position, the object to be cooled is insulated from the heat conductive member, and cooling of the object to be cooled by the heat conductive member is stopped. Therefore, in the present invention, by moving the object to be cooled from the heat transfer position to the heat insulation position in summer, etc., condensation on the object to be cooled can be suppressed.

[0016] The geothermal heat utilization cooling structure described in claim 3 is the geothermal heat utilization cooling structure described in claim 2, further comprising a latent heat storage material provided in the heat conduction member for storing geothermal heat, and the heat conduction member cools the object to be cooled via the latent heat storage material.

[0017] According to the geothermal heat utilization cooling structure of claim 3, the heat conductive member is provided with a latent heat storage material. The latent heat storage material stores geothermal heat (cold heat) conducted from the heat conductive member. Then, the heat conductive member cools the object to be cooled via the latent heat storage material.

[0018] By storing geothermal heat (cold heat) in the latent heat storage material in this manner, the object to be cooled can be cooled efficiently.

[0019] As described above, when the object to be cooled moves from the heat transfer position to the heat insulation position, the object to be cooled is insulated from the heat conductive member, so that the geothermal heat (cold heat) stored in the latent heat storage material is prevented from dissipating through the object to be cooled.

[0020] Therefore, in the present invention, by moving the object to be cooled from the heat transfer position to the heat insulation position, the geothermal heat (cold heat) transferred from the heat transfer member can be efficiently stored in the latent heat storage material.

[0021] The geothermal heat utilization cooling structure described in claim 4 is the geothermal heat utilization cooling structure described in claim 1, which is provided with an insulating material covering the heat conduction member, the heat conduction member has an above-ground portion that is placed on the ground, and the insulating material covers at least the above-ground portion of the heat conduction member.

[0022] According to the geothermal heat utilization cooling structure of claim 4, the heat conductive member has an above-ground part that is placed on the ground. The heat insulating material covers at least the above-ground part of the heat conductive member. This prevents geothermal heat (cold heat) from dissipating from the above-ground part of the heat conductive member to the ground (outside air). Therefore, the object to be cooled can be cooled efficiently.

[0023] A geothermal heat utilization cooling structure according to claim 5 is the geothermal heat utilization cooling structure according to any one of claims 1 to 4, wherein the object to be cooled includes a seat of a chair.

[0024] According to the geothermal heat utilization cooling structure of claim 5, for example, in summer or the like, the seat of the chair can be cooled by the heat conductive member, thereby improving the comfort of the chair. Effect of the Invention

[0025] As described above, according to the present invention, it is possible to cool an object to be cooled while simplifying the cooling structure of the object to be cooled. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1(A) is a plan view showing a chair to which a geothermal cooling structure according to one embodiment is applied, and FIG. 1(B) is a cross-sectional view taken along line 1B-1B in FIG. 1(A). [Diagram 2] FIG. 2 is a partially enlarged cross-sectional view of FIG. 1(B) showing the waiting state of the chair cushion. [Diagram 3] FIG. 2 is an enlarged cross-sectional view of a portion of FIG. 1(B) showing the seated state of the chair cushion. [Figure 4] FIG. 13 is a perspective view showing an analytical model of a heat conduction member used in a simulation. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, a geothermal energy cooling structure according to one embodiment will be described with reference to the drawings.

[0028] (chair) 1(A) and 1(B) show a chair 10 to which the geothermal cooling structure according to this embodiment is applied. As an example, the chair 10 is installed outdoors, such as in a park. In addition, as an example, the chair 10 is a stool without a backrest. This chair 10 includes a heat conductive member 20, a latent heat storage material 40, a heat insulating material 30, and a cushion 50.

[0029] The chair 10 may be placed under a solar radiation shielding material, etc. The cushion 50 is an example of an object to be cooled.

[0030] (Heat conductive material) 1(B) by an arrow F, the heat conductive member 20 is a member that conducts geothermal heat (cold heat) of the ground G to the cushion 50. The heat conductive member 20 of this embodiment also functions as a support member (chair body) that supports the cushion 50.

[0031] The heat conductive member 20 is formed of, for example, a material having high thermal conductivity. More specifically, the heat conductive member 20 is formed of a highly thermally conductive metal such as iron or aluminum, or a highly thermally conductive resin such as polycarbonate resin, polybutylene terephthalate resin, polyacetal resin, or nylon resin.

[0032] As an example, the heat conducting member 20 is formed in a cylindrical shape and is disposed with its longitudinal direction in the up-down direction (depth direction). The heat conducting member 20 is buried in the ground G with its upper end protruding from the ground G1. The heat conducting member 20 has an underground portion 22 buried in the ground (in the ground G) and an aboveground portion 24 disposed above ground.

[0033] The shape of the heat conducting member 20 is not limited to a cylindrical shape, but may be, for example, a rectangular column shape or a wall shape.

[0034] The lower end side of the underground portion 22 is a heat receiving portion 22L (region L2) that receives geothermal heat (cold heat). This heat receiving portion 22L reaches a depth underground where the underground temperature (soil temperature) in summer or the like is equal to or lower than a predetermined temperature. In this embodiment, as an example, the lower end (L1+L2) of the heat receiving portion 22L of the underground portion 22 reaches a depth of 2.0 m underground where the underground temperature in summer or the like is equal to or lower than about 20°C.

[0035] In addition, the ground temperature in summer decreases as the depth increases underground, and reaches the annual average temperature (about 17°C in Tokyo) at a depth of about 10 m underground. Therefore, the depth of the heat receiving part 22L buried in the ground G is set to, for example, within a range of 1 to 10 m.

[0036] (Thermal insulation) The outer peripheral surface 20S of the heat conductive member 20 is covered with a heat insulating material 30. The heat insulating material 30 is a material that insulates the heat conductive member 20 from the ground G or the ground (outside air) and suppresses diffusion of geothermal heat (cold heat) from the outer peripheral surface 20S of the heat conductive member 20 to the ground G or the ground.

[0037] The heat insulating material 30 covers the outer peripheral surface 20S of the heat conducting member 20 (the above-ground portion 24 and the underground portion 22) other than the heat receiving portion 22L (region L1). The heat insulating material 30 also covers the outer peripheral surface 40S of the latent heat storage material 40 described below. The heat insulating material 30 is, for example, urethane or glass wool, and is sprayed onto the outer peripheral surface 20S of the heat conducting member 20 or attached to the outer peripheral surface 20S of the heat conducting member 20 with an adhesive or the like.

[0038] The outer peripheral surface of the heat insulating material 30 is covered with a waterproof material 32. The waterproof material (water-proof material) 32 is formed in a film shape from polyvinyl chloride resin, rubber, or the like. The waterproof material 32 waterproofs the heat conductive member 20 against groundwater, rainwater, and the like. The waterproof material 32 may be provided as necessary, and may be omitted as appropriate.

[0039] (Latent heat storage material) 2, a phase change material 40 is provided on the upper end of the above-ground portion 24 of the heat conductive member 20. The phase change material (PCM) 40 is a heat storage material that stores underground heat (cold heat) conducted from the heat conductive member 20. The heat storage performance of the phase change material 40 is appropriately adjusted by the size (volume) of the phase change material 40 and the solidification temperature of the phase change material 40.

[0040] The latent heat storage material 40 is formed in a disk shape, for example, and placed (connected) on the upper end surface of the above-ground part 24 of the heat conduction member 20 so as to be heat transferable (heat exchangeable). The outer peripheral surface 40S of the latent heat storage material 40 is covered with the above-mentioned heat insulating material 30. This heat insulating material 30 suppresses dissipation of stored heat (cold heat) from the outer peripheral surface 40S of the latent heat storage material 40 to the ground (outside air). The latent heat storage material 40 is appropriately fixed to the upper end surface of the above-ground part 24 of the heat conduction member 20 by an adhesive or the like.

[0041] (cushion) The cushion 50 is the seat of the chair 10 on which the user sits. The cushion 50 is formed in a flat bag shape and is filled with air. The cushion 50 has a fixed heat transfer part 52, a movable heat transfer part 54, and an elastic support part 56.

[0042] The fixed heat transfer part 52 and the movable heat transfer part 54 are formed of, for example, a material having high thermal conductivity, similar to the heat conduction member 20. More specifically, the heat conduction member 20 is formed of a highly thermally conductive metal such as iron or aluminum, or a highly thermally conductive resin such as polycarbonate resin, polybutylene terephthalate resin, polyacetal resin, or nylon resin.

[0043] The fixed heat transfer part 52 and the movable heat transfer part 54 are formed in a disk shape and are arranged facing each other in the up-down direction. The fixed heat transfer part 52 constitutes the lower surface side of the cushion 50, and is placed (connected) on the latent heat storage material 40 so as to be capable of heat transfer (heat exchange). The movable heat transfer part 54 is arranged above the fixed heat transfer part 52.

[0044] The fixed heat transfer portion 52 is appropriately fixed by an adhesive or the like to the upper end surface of the latent heat storage material 40. The shapes of the fixed heat transfer portion 52 and the movable heat transfer portion 54 are not limited to a disk shape, and may be rectangular.

[0045] The movable heat transfer part 54 constitutes the upper surface side of the cushion 50. The upper surface of the movable heat transfer part 54 is a seat surface 54T on which a user sits. The movable heat transfer part 54 is supported (elastically supported) by an elastic support part 56 so as to be movable in the vertical direction. This allows the movable heat transfer part 54 to move between a heat transfer position where heat can be transferred to the fixed heat transfer part 52 and a heat insulating position where heat is insulated from the heat conducting member 20.

[0046] The elastic support portion 56 constitutes the outer periphery of the cushion 50. The elastic support portion 56 is formed of an elastic body such as rubber having elasticity and heat insulation properties. The elastic support portion 56 is formed in a ring shape in a plan view. The elastic support portion 56 has a cross-sectional shape that is U-shaped with the center side of the cushion 50 open.

[0047] The elastic support portion 56 has a lower wall portion 56L and an upper wall portion 56U which face each other in the vertical direction, and a side wall portion 56S which connects the outer peripheries of the lower wall portion 56L and the upper wall portion 56U. The inner periphery of the lower wall portion 56L is joined to the outer periphery of the fixed heat transfer portion 52. Meanwhile, the inner periphery of the upper wall portion 56U is joined to the outer periphery of the movable heat transfer portion 54. The elastic support portion 56 connects and insulates the fixed heat transfer portion 52 and the movable heat transfer portion 54.

[0048] 2, the elastic support portion 56 supports the movable heat transfer portion 54 so as to be located at an insulating position above the fixed heat transfer portion 52 in a state (natural state, standby state) before the user sits on the seat surface 54T of the cushion 50. As a result, the movable heat transfer portion 54 and the fixed heat transfer portion 52 are insulated from each other by air (insulating layer) present between them.

[0049] On the other hand, when the user is seated on the seat surface 54T of the cushion 50 (elastically deformed state, seated state), the elastic support portion 56 elastically deforms until the movable heat transfer portion 54 comes into contact with the fixed heat transfer portion 52, i.e., until the movable heat transfer portion 54 is located at the heat transfer position. This enables the movable heat transfer portion 54 to transfer heat to the fixed heat transfer portion 52. At this time, the air between the movable heat transfer portion 54 and the fixed heat transfer portion 52 is pushed out to the outer periphery of the cushion 50, and the elastic support portion 56 expands (elastically deforms) toward the outer periphery of the cushion 50.

[0050] (action) Next, the operation of this embodiment will be described. Note that the operation of the chair 10 in summer will be described below.

[0051] As shown in Fig. 1(B), the chair 10 includes a heat conductive member 20. The heat conductive member 20 has an underground portion 22 that is buried in the ground. The lower end side of the underground portion 22 is a heat receiving portion 22L that receives geothermal heat (cold heat). The lower end of the heat receiving portion 22L reaches a depth of 2.0 m underground where the underground temperature (soil temperature) in summer is about 20°C or less.

[0052] Meanwhile, a latent heat storage material 40 is provided on an upper end of the above-ground part 24 of the heat conduction member 20. As a result, underground heat (cold heat) of about 20°C or less is conducted from the heat receiving part 22L through the underground part 22 and the above-ground part 24 to the latent heat storage material 40 as shown by arrow F, and is stored in the latent heat storage material 40. In addition, a fixed heat transfer part 52 of a cushion 50 is connected to the latent heat storage material 40 in a manner capable of thermal transfer.

[0053] 2 shows the cushion 50 in a standby state, i.e., the cushion 50 with the elastic support portion 56 in a natural state. In this standby state, the movable heat transfer portion 54 of the cushion 50 is located at an insulating position, and the movable heat transfer portion 54 and the fixed heat transfer portion 52 are insulated from each other. This prevents the cold stored in the latent heat storage material 40 from being dissipated into the outside air via the fixed heat transfer portion 52 and the movable heat transfer portion 54.

[0054] 3, when a user sits on the seat surface 54T of the cushion 50 from this standby state of the cushion 50, the elastic support portion 56 of the cushion 50 elastically deforms, and the movable heat transfer portion 54 of the cushion 50 moves to a heat transfer position where it contacts the fixed heat transfer portion 52. In this state, the user is supported by the latent heat storage material 40 and the heat conductive member 20 via the cushion 50.

[0055] As a result, as indicated by an arrow F, the geothermal heat (cold heat) stored in the latent heat storage material 40 is transferred to the movable heat transfer part 54 via the fixed heat transfer part 52. Therefore, the seat surface 54T of the cushion 50 is cooled.

[0056] In this manner, in this embodiment, the seat 54T of the chair 10 is cooled by conducting geothermal heat (cold heat) to the seat 54T by the thermal conductive member 20. Therefore, in this embodiment, the cooling structure of the seat 54T of the chair 10 can be simplified compared to a cooling structure in which the seat 54T of the chair 10 is cooled by groundwater or a Peltier element, for example.

[0057] In this embodiment, the heat conductive member 20 is provided with a latent heat storage material 40. The latent heat storage material 40 stores geothermal heat (cold heat) conducted from the heat conductive member 20, and cools the movable heat transfer part 54 (seat surface 54T of the chair 10) via the fixed heat transfer part 52 when the cushion 50 is in a seated state.

[0058] By storing geothermal heat (cold heat) in the latent heat storage material 40 in this manner, the seat surface 54T of the chair 10 can be cooled efficiently.

[0059] Furthermore, in this embodiment, as described above, the movable heat transfer part 54 forming the seat surface 54T of the chair 10 is movable between the heat transfer position and the heat insulating position. When the movable heat transfer part 54 moves from the heat transfer position to the heat insulating position while the cushion 50 is in the standby state, the movable heat transfer part 54 is insulated from the fixed heat transfer part 52, and therefore, cooling of the seat surface 54T of the chair 10 by the latent heat storage material 40 is stopped.

[0060] Therefore, in this embodiment, it is possible to suppress condensation on the seat surface 54T of the chair 10. As a result, the clothes of the user are prevented from getting wet due to condensation, improving convenience.

[0061] As described above, when the movable heat transfer section 54 moves from the heat transfer position to the heat insulation position, the seat surface 54T of the chair 10 is insulated from the heat conductive member 20. Therefore, the geothermal heat (cold heat) stored in the latent heat storage material 40 is suppressed from dissipating through the movable heat transfer section 54.

[0062] Therefore, in this embodiment, the geothermal heat (cold heat) transferred from the heat conductive member 20 can be efficiently stored in the latent heat storage material 40 when the cushion 50 is in a standby state.

[0063] In this embodiment, the outer peripheral surface 20S of the heat conductive member 20, except for the outer peripheral surface 20S of the heat receiving portion 22L, is covered with the heat insulating material 30. This prevents geothermal heat (cold heat) from being dissipated into the ground from the underground portion 22 of the heat conductive member 20, and also prevents geothermal heat (cold heat) from being dissipated to the ground (outside air) from the above-ground portion 24 of the heat conductive member 20.

[0064] Furthermore, in this embodiment, the outer peripheral surface 40S of the latent heat storage material 40 is also covered with the heat insulating material 30. This prevents geothermal heat (cold heat) from dissipating to the ground (outside air) from the outer peripheral surface 40S of the latent heat storage material 40. Therefore, in this embodiment, the seat surface 54T of the chair 10 can be efficiently cooled.

[0065] (Modification) Next, a modification of the above embodiment will be described.

[0066] In the above embodiment, the outer peripheral surface 20S of the heat conductive member 20 is covered with the heat insulating material 30. However, it is preferable that the heat insulating material 30 covers at least the outer peripheral surface 20S of the above-ground part 24 of the heat conductive member 20. This is because the above-ground part 24 of the heat conductive member 20 is more likely to be heated by outside air than the underground part 22. Furthermore, it is more preferable that the heat insulating material 30 covers not only the above-ground part 24 of the heat conductive member 20, but also the outer peripheral surface 20S of the upper part of the underground part 22. This is because the ground temperature is higher in shallow areas of the ground G than in deep areas of the ground G.

[0067] The heat insulating material 30 covering the outer peripheral surface 20S of the heat conductive member 20 may be provided as necessary and may be omitted as appropriate. Similarly, the heat insulating material 30 covering the outer peripheral surface 40S of the latent heat storage material 40 may be provided as necessary and may be omitted as appropriate.

[0068] In the above embodiment, the latent heat storage material 40 is provided at the upper end of the heat conduction member 20. However, the latent heat storage material 40 is not limited to being provided at the upper end of the heat conduction member 20, and may be provided, for example, inside the cushion 50. In this case, the fixed heat transfer part 52 is placed (connected) on the upper end of the heat conduction member 20 so as to be capable of heat transfer. In addition, the movable heat transfer part 54 is movable between a heat transfer position where heat can be transferred from the latent heat storage material 40 and a heat insulating position where heat is insulated from the latent heat storage material 40.

[0069] Furthermore, the latent heat storage material 40 may be provided as necessary and may be omitted as appropriate. When the latent heat storage material 40 is omitted, for example, the fixed heat transfer part 52 of the cushion 50 is placed (connected) on the upper end part of the heat conduction member 20 so as to be capable of transferring heat.

[0070] In the above embodiment, the cushion 50 is provided with the fixed heat transfer portion 52 and the movable heat transfer portion 54. However, it is sufficient that the cushion 50 has at least a seat surface 54T to which geothermal heat is conducted from the heat conducting member 20, and the fixed heat transfer portion 52 and the movable heat transfer portion 54 can be omitted as appropriate. When the fixed heat transfer portion 52 and the movable heat transfer portion 54 are omitted, for example, the seat surface of the chair is connected to the heat conducting member 20 or the latent heat storage material 40 in a manner capable of conducting heat.

[0071] In the above embodiment, the chair 10 is a stool for one person. However, the chair may be a stool for multiple people or a bench. The shape and size of the heat conductive member 20 can be changed as appropriate according to the shape and size of the seat surface 54T of the chair 10 as the object to be cooled.

[0072] In the above embodiment, the heat conductive member 20 also functions as a support member that supports the seat surface 54T of the chair 10. However, the chair 10 may be provided with legs as a support member that supports the seat surface 54T, in addition to the heat conductive member 20. In this case, the heat conductive member 20 only needs to be connected to the seat surface 54T in a manner that allows thermal conduction, and may or may not support the seat surface 54T.

[0073] In the above embodiment, the object to be cooled is the seat 54T of the chair 10. However, the object to be cooled is not limited to the seat 54T of the chair 10, and may be, for example, the backrest or armrest of the chair. The object to be cooled is not limited to a chair or a bench, and may be, for example, a handrail or a louver installed outdoors. For example, by cooling the louver with the heat conductive member 20, the wind passing through the louver is cooled, and thus cold wind can be generated. The object to be cooled is not limited to being installed outdoors, and may be installed indoors.

[0074] In the above embodiment, in the summer or the like, the seat 54T of the chair 10 is cooled by conducting geothermal heat (cold heat) to the seat 54T via the heat conductive member 20. However, for example, in the winter or the like, the seat 54T can be heated by conducting geothermal heat (hot heat) to the seat 54T of the chair 10 via the heat conductive member 20.

[0075] (Temperature simulation of thermal conductive materials) Next, a temperature simulation of the heat conducting member 20 in the above embodiment will be described.

[0076] (overview) In this temperature simulation, the temperature of upper surface 24U of above-ground portion 24 of heat conductive member 20 was analyzed using analytical model M of heat conductive member 20 shown in FIG.

[0077] (Analysis conditions) Analysis software: STAR-CCM+ (registered trademark, SIEMENS) Temperature: 30℃ (303.15k) Thermal conductivity: 20W / mK Thermal insulation coefficient: 1.0W / m 2 K underground temperature Shallow (depth 0.0 to 1.5 m): 25.0°C (298.15K) Deep (1.5-2.0m underground): 20.0℃ (293.15K)

[0078] (Analysis results) In the analysis model M, it was confirmed that the temperature of the upper surface 24U of the above-ground part 24 of the heat conductive member 20 was air temperature (30°C) - 6°C (= 24°C), and the upper surface 24U of the above-ground part 24 was cooled by geothermal heat.

[0079] Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modified examples may be used in appropriate combination, and it is of course possible to implement the present invention in various forms without departing from the gist of the present invention. [Explanation of symbols]

[0080] 20. Thermal Conductive Materials 22 Underground 24 Aboveground part 30 Insulation 40 Latent heat storage material 54T Seat (cooling object)

Claims

1. An object to be cooled provided on the ground; A heat conductive member having a subterranean portion buried in the ground, conducting geothermal heat to the object to be cooled and cooling the object to be cooled; A geothermal cooling structure equipped with a geothermal energy source.

2. The object to be cooled is movable between a heat transfer position where heat can be transferred to the heat conduction member and a heat insulation position where the object to be cooled is insulated from the heat conduction member. The geothermal cooling structure according to claim 1 .

3. A latent heat storage material is provided in the heat conductive member and stores geothermal heat, The heat conductive member cools the object to be cooled via the latent heat storage material. The geothermal cooling structure according to claim 2.

4. a heat insulating material covering the heat conductive member; The heat conducting member has an above-ground portion that is placed on the ground, The heat insulating material covers at least the above-ground part of the heat conductive member. The geothermal cooling structure according to claim 1 .

5. The object to be cooled includes a seat of a chair. The geothermal heat utilization cooling structure according to any one of claims 1 to 4.

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