TWI848787B - Heat dissipation tatami - Google Patents

Abstract

A heat dissipation tatami includes a cool mat and a heat conduction unit. The cool mat is suitable for conducting heat generated by a user and includes a bottom surface. The heat conduction unit is stacked on the bottom surface of the cool mat and includes an active layer containing a graphene material and suitable for receiving the heat from the cool mat. When the user lies on the cool mat, based on the phenomenon that heat energy is transferred from high temperature to low temperature, the heat generated by the user can penetrate the cool mat and be transferred to the heat conduction unit. When the heat conduction unit is heated up by the heat, the heat can be directed to the part of the cool mat where the user is not lying, and the heat can penetrate the cool mat and dissipate to the outside environment through the heat convection phenomenon caused by the relatively low temperature air in the outside environment and the cool mat.

Description

Heat dissipation tatami

The present invention relates to a bedding, in particular to a heat dissipating tatami.

In recent years, people's requirements for sleep quality have gradually increased. Tatami can be laid out and lied on anywhere while users sleep, while providing a convenient and comfortable sleeping environment. Therefore, the market demand for tatami has increased year by year.

Referring to FIG. 1 , a conventional tatami 9 comprises a mat surface 91 woven from a plurality of bamboo pieces, and a cushion 92 filled with a plurality of straws and a plurality of sawdust and arranged below the mat surface 91. When the conventional tatami 9 is used, the cushion 92 is placed on the ground with the cushion 92 facing the ground, and the mat surface 91 is used for the user to lie down. Through the soft material properties of the straw and the sawdust filled with the cushion 92, the conventional tatami 9 can provide the user with a lying environment with a moderate hardness and softness, thereby achieving the effect of enhancing the lying comfort.

When the user lies on the mat surface 91, based on the thermodynamic principle that energy is transferred from high temperature to low temperature, the heat energy generated by the user can penetrate the mat surface 91 to the pad 92. However, since the straw and the sawdust of the pad 92 will produce pores when filled, and the pores will be filled with air to form a heat insulation effect, the remaining heat energy of the pad 92 is difficult to be transferred to the ground for heat exchange through heat conduction. In addition, since one side of the cushion 92 that contacts the ground is blocked by the ground, the air convection of the pores in the cushion 92 is poor, and the heat energy transferred to the cushion 92 is difficult to dissipate to the external environment through heat convection. The heat energy will continue to accumulate around the user, forming a humid and uncomfortable lying environment.

Therefore, the purpose of the present invention is to provide a heat dissipation tatami that can maintain a comfortable feeling when used.

Therefore, the heat dissipation tatami of the present invention includes a cool mat and a heat conducting unit.

The cool mat is suitable for conducting heat generated by a user and includes a mat surface and a bottom surface on the opposite side of the mat surface.

The heat conducting unit is stacked on the bottom surface of the cool mat and includes an active layer containing a graphene material and adapted to receive the heat from the cool mat and convert part of the heat into far infrared rays.

The effect of the present invention is that when the user lies on the cool mat, based on the thermodynamic principle that heat energy is transferred from high temperature to low temperature, the heat generated by the user can penetrate the cool mat to the heat conduction unit, and can pass through the excellent heat absorption and heat conduction properties of the graphene material, so that the heat conduction unit can quickly absorb the heat energy and quickly conduct it away from the user. Then, when the heat conduction unit heats up due to absorbing heat energy, the heat will be transferred to the part where the user is not lying, and the heat convection caused by the external air flow and the pores in the cool mat can smoothly dissipate the heat to the external environment, avoiding the continuous accumulation of the heat or re-transmission back to the user, so as to improve the comfort of use.

Before the present invention is described in detail, it should be noted that similar components are represented by the same reference numerals in the following description.

Referring to FIG. 2 , a first embodiment of the heat dissipation tatami of the present invention comprises a cool mat 1, a stack of heat conducting units 2 arranged on the cool mat 1, a stack of substrates 4 arranged on one side of the heat conducting units 2 away from the cool mat 1, and an outer frame 5 connecting the cool mat 1, the heat conducting units 2 and the periphery of the substrate 4. The first embodiment is suitable for being laid on the ground and for users to lie down on.

The cool mat 1 defines a plurality of pores and includes a mat surface 11 and a bottom surface 12 on the opposite side of the mat surface 11 and in contact with the heat conducting unit 2. The cool mat 1 is preferably made of reed grass, and the porous material property of the reed grass can contain moisture in the environment to achieve the effect of regulating humidity.

Referring to FIG. 3 and FIG. 2 , the heat conducting unit 2 is stacked on the bottom surface 12 of the cool mat 1 and includes an active layer 21 containing a graphene material and disposed adjacent to one side of the bottom surface 12. The active layer 21 is formed by mixing the graphene material into a masterbatch and kneading and pressing it into a cotton shape. Preferably, the material of the masterbatch is selected from cotton, linen or artificial fiber, and the masterbatch is fluffy and stacked, which increases the air permeability of the heat conducting unit 2. The graphene material of the active layer 21 is disposed on a side adjacent to the bottom surface 12 of the cool mat 1 and directly contacts the bottom surface 12, which helps to utilize the heat absorption and heat conduction properties of the graphene material and cooperate with the pores of the cool mat 1 to form a path for heat conduction.

Referring to FIG. 4 and FIG. 5 in conjunction with FIG. 2 , the substrate 4 is stacked on one side of the heat conducting unit 2 away from the cool mat 1. The substrate 4 includes a plurality of connectors 41 disposed on one side away from the heat conducting unit 2 and disposed around the substrate 4. Preferably, the substrate 4 is selected from a material such as a brushed cloth, and the connectors 41 are selected from Velcro. The connectors 41 can make the substrates 4 of different heat dissipating tatami mats stick to each other and splice each other through the adhesive properties of Velcro and brushed cloth.

The outer frame 5 is mounted on the periphery of the cool mat 1, the heat conducting unit 2 and the substrate 4. The outer frame 5 is fixed by weaving or sewing, so that the cool mat 1, the heat conducting unit 2 and the substrate 4 can be maintained in a stable overlapping state as shown in FIG. 2 . Specifically, during the manufacturing of the first embodiment, the masterbatch is put into a cotton yarn shape through a known cotton spinning process, and the graphene material in powder form is mixed therein, and the active layer 21 is made into a cotton shape through kneading and pressing. Then, the cool mat 1, the heat conductive unit 2 and the substrate 4 are stacked in sequence, and the graphene material is distributed on one side of the heat conductive unit 2 adjacent to the cool mat 1. Then, the outer frame 5 is sleeved on the cool mat 1, the heat conductive unit 2 and the substrate 4 to ensure that the cool mat 1, the heat conductive unit 2 and the substrate 4 are tightly stacked with each other, thereby completing the manufacturing process of the first embodiment.

Referring to FIG. 6 and FIG. 2 , when the first embodiment is used, the substrate 4 is facing the ground, the first embodiment is directly laid on the ground, and the user lies on the mat surface 11 of the cool mat 1. When the user lies on the cool mat 1, based on the thermodynamic principle that energy is transferred from high temperature to low temperature, the heat generated by the user can penetrate the pores of the cool mat 1 to the heat conduction unit 2. By configuring the active layer 21 containing the graphene material adjacent to one side of the cool mat 1, the heat conduction unit 2 can effectively receive the heat generated by the user and enhance the heat conduction effect of the heat conduction unit 2. Based on the excellent heat absorption and heat conduction properties of the graphene material configured in the heat conducting unit 2, when the heat penetrates the cool mat 1 to the heat conducting unit 2, the graphene material can quickly absorb the heat, so the heat conducting unit 2 can have an excellent heat conduction effect, thereby quickly conducting the heat away from the user.

When the heat is conducted away from the user through the heat conducting unit 2 and flows through the part of the heat conducting unit 2 where the user is not lying, the temperature rise caused by the heat conducting unit 2 absorbing the heat can cooperate with the heat convection phenomenon formed by the pores of the cool mat 1 and the relatively low temperature air of the external environment, so that the heat absorbed by the heat conducting unit 2 can exchange heat with the external environment, thereby dissipating the heat to the external environment. Therefore, the user's comfort can be improved without accumulating the heat around the user and not easily being conducted back to the user.

It is worth mentioning that, in order to further confirm that the first embodiment is sufficient to provide the user with a comfortable feeling when lying down, the test method of FTTS-FA-010 far infrared textile certification specification (2007 edition) was used to test and it was found that the graphene material contained in the heat conducting unit 2 can convert about 81% of the energy into a far infrared ray. Therefore, when the user lies on the cool mat 1 of the first embodiment, part of the heat can be converted into the far infrared ray through the graphene material of the active layer 21. When the user lies down, the physiological function of the user, such as blood circulation, can be improved, and the comfort of lying down can be increased.

Referring to FIG. 7 and FIG. 8 , a second embodiment of the heat dissipation tatami of the present invention is shown. The structure of the second embodiment is substantially the same as that of the first embodiment, but the difference is that the second embodiment includes a barrier unit 3 stacked on one side of the heat conducting unit 2 away from the cool mat 1. The heat conducting unit 2 as a whole contains the active layer 21 of the graphene material, and the heat conducting unit 2 is made by mixing the graphene material into the masterbatch and weaving it into a cloth sheet. The substrate 4 is stacked on one side of the barrier unit 3 away from the cool mat 1. The outer frame 5 is sleeved around the cool mat 1, the heat conducting unit 2, the insulating unit 3 and the substrate 4, so that the cool mat 1, the heat conducting unit 2, the insulating unit 3 and the substrate 4 are kept in a stable overlapping state.

The material of the barrier unit 3 is selected from ethylene-vinyl acetate (EVA) copolymer. The heat-insulating property of the ethylene-vinyl acetate can form a heat barrier between the heat-conducting unit 2 and the ground, ensuring the basic heat dissipation effect of the heat-conducting unit 2. In addition, the waterproof property of the ethylene-vinyl acetate copolymer can prevent the moisture on the ground from directly penetrating the barrier unit 3, preventing moisture from accumulating in the cool mat 1 woven from bamboo or rattan materials and causing mold, thereby ensuring a comfortable feeling when lying down. Furthermore, the insect-proof property of the ethylene-vinyl acetate copolymer can reduce the surface damage caused by insects such as mealybugs or aphids parasitizing on the substrate 4, penetrating the barrier unit 3 and directly gnawing at the mat surface 11 of the cool mat 1, so that it can be laid according to the placement requirements of the outdoor environment. Finally, the high mechanical strength of the ethylene-vinyl acetate copolymer can reduce the irreversible bending deformation of the barrier unit 3 caused by transportation collision, so as to improve the collision tolerance of the second embodiment during transportation and increase the service life.

When the second embodiment is used, the user lies on the mat surface 11 of the cool mat 1 and spreads it on the ground. Based on the thermodynamic principle of energy transfer from high temperature to low temperature, the heat will penetrate the pores of the cool mat 1 and flow to the heat conducting unit 2. And through the material properties of the blocking unit 3, in addition to effectively blocking the heat conducting unit 2 from exchanging heat with the ground, the second embodiment as a whole has waterproof and insect-proof properties, so that it can be laid out in response to the diverse conditions of the external environment. As described in the first embodiment, based on the heat absorption and heat conduction properties of the graphene material of the heat conductive unit 2, the heat conductive unit 2 can quickly receive the heat. When the heat flows through the part where the user is not lying down, based on the temperature rise caused by the heat conductive unit 2 absorbing the heat, combined with the relatively low temperature air of the external environment and the thermal convection effect of the pores of the cool mat 1, the heat can also quickly dissipate to the external environment, thereby achieving the expected heat dissipation effect.

It should be noted that, since the entire cloth-shaped heat-conducting unit 2 contains the graphene material and is closely attached to the bottom surface 12 of the cool mat 1 and stacked on top of each other, the distance between the graphene material of the heat-conducting unit 2 and the user is reduced, and the heat generated by the user can be transmitted to the heat-conducting unit 2 via a shorter path, thereby improving the efficiency of the heat-conducting unit 2 in receiving the heat from the user and further increasing the heat dissipation effect of the heat-conducting unit 2.

In summary, the heat dissipating tatami of the present invention is based on the thermodynamic principle of energy transfer from high temperature to low temperature. The heat generated by the user lying on the cool mat 1 can penetrate the cool mat 1 to the heat conducting unit 2, and through the heat absorption and heat conduction properties of the graphene material configured in the heat conducting unit 2, the heat is quickly absorbed and conducted away from the user. When the heat flows through the part where the user is not lying, the heat convection phenomenon caused by the relatively low temperature air in the outside environment and the pores of the cool mat 1 can dissipate to the outside environment without accumulating around the user, thereby achieving the effect of improving the user comfort, so the purpose of the present invention can be achieved.

However, the above is only an example of the implementation of the present invention, and it cannot be used to limit the scope of the implementation of the present invention. All simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still within the scope of the patent of the present invention.

1: Cooling mat 11: Mat surface 12: Bottom surface 2: Heat conduction unit 21: Active layer 3: Barrier unit 4: Base material 41: Joint 5: Frame

Other features and functions of the present invention will be clearly presented in the implementation method with reference to the drawings, in which: Figure 1 is a three-dimensional diagram illustrating an existing tatami; Figure 2 is a three-dimensional exploded diagram illustrating a first embodiment of the heat dissipation tatami of the present invention; Figure 3 is a partially enlarged cross-sectional view illustrating an active layer of a heat-conducting unit of the first embodiment; Figure 4 is a schematic diagram illustrating a plurality of connectors of a plurality of the first embodiments, and the connector functions of the connectors; Figure 5 is a schematic diagram, which is used in conjunction with Figure 4 to illustrate a plurality of the first embodiments, which are spliced together through the connectors; Figure 6 is a schematic diagram illustrating the transfer direction of a heat generated by the user guided by the first embodiment; FIG. 7 is a three-dimensional exploded view illustrating a second embodiment of the heat dissipating tatami of the present invention; and FIG. 8 is a schematic diagram similar to FIG. 6, illustrating the direction of transfer of the heat generated by the user guided by the second embodiment.

1: Sun mat

11: Mat surface

12: Bottom

2: Heat conduction unit

21: Action layer

4: Base material

41:Connectors

5: Outer frame

Claims (7)

A heat dissipation tatami includes: a cool mat, which is suitable for conducting heat generated by a user, and includes a mat surface, and a bottom surface on the opposite side of the mat surface; and a heat conduction unit, which is stacked on the bottom surface of the cool mat, and includes an active layer containing a graphene material and suitable for receiving the heat from the cool mat and converting part of the heat into a far infrared ray, wherein the active layer is the graphene material mixed with a masterbatch, and is kneaded and pressed to be in a cotton shape. The heat dissipating tatami as described in claim 1, wherein the graphene material of the active layer is disposed on one side of the bottom surface adjacent to the cool mat. The heat dissipating tatami as described in claim 1 or 2 further comprises a substrate stacked on a side of the heat conducting unit away from the cool mat, wherein the substrate comprises at least one connector disposed on a side away from the heat conducting unit, and the at least one connector is used to be detachably connected to the connector of another heat dissipating tatami. The heat dissipating tatami as described in claim 3 also includes a set of outer frames arranged around the cool mat, the heat conducting unit and the substrate. A heat dissipation tatami comprises: a cool mat, which is suitable for conducting heat generated by a user, and includes a mat surface and a bottom surface on the opposite side of the mat surface; a heat conduction unit, which is stacked on the bottom surface of the cool mat, and includes an action layer containing a graphene material and suitable for receiving the heat from the cool mat and converting part of the heat into a far infrared ray, wherein the action layer is a cloth sheet made by mixing the graphene material into a masterbatch and weaving; and a barrier unit stacked on one side of the heat conduction unit away from the cool mat, wherein the material of the barrier unit is selected from ethylene-vinyl acetate (EVA) copolymer. The heat dissipation tatami as described in claim 5 further comprises a substrate stacked on a side of the barrier unit away from the cool mat, wherein the substrate comprises at least one connector disposed on a side away from the heat conducting unit, and the at least one connector is used to be detachably connected to the connector of another heat dissipation tatami. The heat dissipating tatami as described in claim 6 also includes a set of outer frames arranged around the cool mat, the heat conducting unit, the insulating unit and the substrate.

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