JP7070859B2 - Snowmelt mat - Google Patents

Description

This disclosure relates to a snowmelt mat.

Patent Document 1 has a flow path inside the tube, and a medium having a temperature higher than that of snow flows through the flow path to warm the snowmelt surface on the outside of the tube, thereby melting the snow adhering to the snowmelt surface. Matt is listed. In the snowmelt mat, the contact area is increased in a concave-convex shape in order to promote the melting caused by the melting of the snow that comes into contact with the snowmelt surface, so that the snowmelt water is drained from the top of the snowmelt mat to the bottom of the snowmelt mat. A drainage hole is provided between the tubes.

Japanese Unexamined Patent Publication No. 2002-88730

In the snowmelt mat described in Patent Document 1, the snowmelt water on the snowmelt mat is drained under the snowmelt mat through a drain hole provided between the tubes.
By widening the drainage hole between the flow path through which the hot water passes, a large amount of snowmelt water can flow under the snowmelt mat, and the drainage property is improved.

However, this structure is intended for melting snow in railway tracks, not for general pedestrians or parking lots. In this structure, the drain hole between the tubes is widened and the shape is uneven according to the shape of the flow path in order to enhance the snow melting capacity. Therefore, when placed on the floor or ground where pedestrians pass, pedestrians can The ease of walking on a snow-melting mat and the walking ability including safety against falls due to stumbling are reduced.

One aspect of the present disclosure is to provide a snowmelt mat that has both drainage and walkability.

One aspect of the present disclosure is a snowmelt mat, which includes a plurality of mediating members, a holding member, and an inflow / discharge section. The medium-transmitting member is formed in a band shape, at least one surface is formed in a planar shape, and at least one medium-transmitting tube through which a fluid-like medium flows is formed inside. The holding member holds the distance between the plurality of medium-carrying members arranged side by side in a plate shape to 0.1 mm or more and 5.0 mm or less. The inflow / discharge section is connected to the medium passage tube so that the medium can flow in or out.

According to such a configuration, the interval is less than the interval that hinders the pedestrian from walking, and more than the interval that allows water to flow from the upper side to the lower side through the arranged medium-transmitting members. Set. It is possible to achieve both the walkability of a pedestrian walking on the snowmelt mat and the drainage property of draining the melted water of the snow existing on the snowmelt mat.

It is the whole view of the snowmelt mat seen from the surface side. It is the whole view of the snowmelt mat seen from the back side. It is the figure which showed the inflow collecting pipe. FIG. 3 is a sectional view taken along line IV-IV of FIG. 3 of the inflow collecting pipe. FIG. 3 is a sectional view taken along line VV of the medium-carrying member of FIG. FIG. 3 is a sectional view taken along line VI-VI showing a connection portion between the inflow collecting pipe and the medium-carrying member of FIG. It is the figure which showed the flow of the medium passing through the snowmelt mat. It is a figure showing a snowmelt mat including a colored medium-caring member. It is a figure showing the cross section of the snowmelt mat in the modification. It is sectional drawing of the inflow collecting pipe and the mediation member in the modification. It is sectional drawing of the inflow collecting pipe and the mediation member in the modification. It is sectional drawing of the inflow collecting pipe in the modification.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.
[1. Constitution]
The overall configuration of the snowmelt mat 1 will be described with reference to FIGS. 1 and 2.

When the snowmelt mat 1 is placed on the floor or the ground for use, FIG. 1 is a diagram showing a configuration in which the snowmelt mat 1 is viewed from above (hereinafter, also referred to as a surface side), and FIG. 2 is a diagram showing a configuration of the snowmelt mat 1 as viewed from above. It is a figure which showed the structure which 1 was seen from the lower side (hereinafter also referred to as a back surface side).

As shown in FIGS. 1 and 2, the snowmelt mat 1 includes an inflow collecting pipe 11, a discharge collecting pipe 12, a plurality of mediating members 13, and a plurality of holding members 14.
The inflow collecting pipe 11 is used to flow the liquid used for melting snow into the snowmelt mat 1 as a medium. As the medium referred to here, a liquid such as water or ethylene glycol is used. The water used as a medium also includes well water obtained from a well. In addition, the water used as a medium may include water obtained from rivers, gutters, drains, and industrial water. The pressure related to the medium flowing into the inflow collecting pipe 11 (for example, water pressure in the case of water) is not particularly set, but may be configured so that the pressure change is variable, for example. In other words, as a supply device such as a pump for supplying the medium to the snowmelt mat 1, a device capable of changing the pressure for discharging the medium may be used. When the medium is water, it is preferable that the water pressure is 0.4 MPa or less and the flow velocity is 0.1 m / s or more.

As shown in FIG. 3, the inflow collecting pipe 11 has an inflow portion 111 and a plurality of branch ports 112a to 112d.
The inflow portion 111 has an outer shape formed in a square columnar shape, and an inner shape formed in a bottomed cylindrical shape extending along the longitudinal direction of the square columnar shape. The space formed inside the inflow portion 111 is open at the end in the longitudinal direction of the inflow portion 111.

Each branch port 112a to 112d is an opening provided in a square columnar side surface portion of the inflow portion 111, and communicates with a space provided inside the inflow portion 111. The side surface of the inflow portion 111 on which the branch openings 112a to 112d are formed is a surface on which the medium passing member 13 is provided. The branch ports 112a to 112d are openings formed side by side at predetermined intervals in the longitudinal direction of the inflow portion 111. Further, the branch ports 112a to 112d are formed at the center in the vertical direction on the side surface when the snowmelt mat 1 is arranged. The shape of the opening may be circular. When the branch ports 112a to 112d are not particularly distinguished, they are also simply referred to as branch ports 112.

Specifically, the shape of the IV-IV plane, which is perpendicular to the bottomed cylindrical central axis which is the inner shape of the inflow collecting pipe 11 and is a cross section including the branch port 112a, is as shown in FIG. expressed.
That is, in FIG. 4, the branch port 112a is formed so as to extend from the space provided inside the inflow portion 111 toward the side surface of the square columnar of the inflow portion 111. The branch openings 112b to 112d are also formed in the same manner as the branch openings 112a.

The discharge collecting pipe 12 has the same basic configuration as the inflow collecting pipe 11. Further, in the following, the configurations of the inflow portion 111 of the inflow collecting pipe 11, the plurality of branch ports 112, and the discharge collecting pipe 12 corresponding to 112a to 112d are referred to as an outflow portion 121, a plurality of branch ports 122, 122a to 122d, respectively. .. Here, the shapes of the discharge collecting pipe 12, the outflow portion 121, and the plurality of branch ports 122, 122a to 122d are illustrated in FIG. 7, and the description thereof will be omitted.

Further, the inflow collecting pipe 11 and the discharge collecting pipe 12 are arranged so as to sandwich the mediating member 13 in between. The branch ports 112a to 112d of the inflow collecting pipe 11 and the branch ports 122a to 122d of the discharge collecting pipe 12 are provided on the side surfaces of the inflow portion 111 and the outflow portion 121 facing each other.

Further, the inflow collecting pipe 11 and the discharge collecting pipe 12 correspond to the inflow / discharge part in the claims.
As shown in FIG. 1, each of the plurality of mediating members 13 has a band-shaped outer shape. In the present embodiment, an example in which the direction from the inflow collecting pipe 11 to the discharge collecting pipe 12 is formed in a plate shape in the longitudinal direction, in other words, a rectangular parallelepiped shape will be described. The plurality of mediating members 13 are arranged side by side in a plate shape between the inflow collecting pipe 11 and the discharge collecting pipe 12. That is, the plurality of mediating members 13 are arranged side by side on the same plane. A plurality of mediator members 13 arranged side by side form a surface that may be stepped on by a pedestrian. Further, the medium passing member 13 has a medium passing tube 131 in which the medium flows. The mediating member 13 is formed of a material capable of transferring heat. For example, it is formed by using a material that can transfer the heat of the medium flowing through the internal flow path to the outside of the medium member 13.

Further, the upper surface of the mediator member 13, that is, the upper surface when the snowmelt mat 1 is arranged, is a surface on the walking side that may be stepped on by a pedestrian.
The mediating member 13 is formed of a material whose base material is an elastic body containing a compounding agent. The elastic body referred to here is formed of a material having high elasticity such as EPDM (ethylene propylene diene) rubber, SBR (styrene butadiene rubber) rubber, and TPE (thermoplastic elastomer). Specifically, the material forming the medium-transmitting member 13 preferably has an elastic modulus that allows the diameter of the medium-transmitting tube 131 to change due to a change in the pressure of the medium. Further, as the material of the medium passing member 13, a material having desired hardness, elongation, strength, weather resistance, water resistance, liquid resistance, cold resistance and wear resistance is selected.

It is preferable that the diameter of the medium-passing member 13 can be changed by 120% or more due to a pressure change when the medium is passed through the inside of the medium-passing tube 131, as compared with the case where the medium is not passed.
Further, it is preferable that the shore hardness (HS) of the medium-passing member 13 is 50 or more and 90 or less, the elongation is 250% or more, and the tensile strength is 8 MPa or more.

Further, the compounding agent is fine particles having higher thermal conductivity and hardness than the base material. As the compounding agent, for example, fine particles such as carbon fiber, carbon nanotube or metal are used. The amount of the compounding agent to be blended with respect to the substrate is not limited to 10 wt%, and may be larger than 10 wt% as long as it can improve thermal conductivity and hardness. It may be less.

As the compounding agent, for example, a thermally conductive filler such as silica (silicon dioxide), aluminum oxide, or magnesium oxide may be used.
Further, the blending amount of the blending material with respect to the base material is preferably 0.1 wt% or more and 10 wt or less. When the blending amount is 0.1 wt% or more, thermal conductivity and hardness can be improved. Further, when the compounding amount is 10 wt% or less, the weight can be reduced. Further, the flexibility of the snowmelt mat 1 as a whole can be improved, and it becomes easy to roll the snowmelt mat 1 when it is rolled in the longitudinal direction. From the above, when the compounding amount is 10 wt% or less, the weight reduction and the flexibility are improved, and as a result, the transportability can be improved.

The shape of the VV line cross section, which is a cross section perpendicular to the longitudinal direction of the band of the medium passing member 13, will be described with reference to FIG.
As shown in FIG. 5, the medium-transmitting member 13 has a plurality of medium-transmitting tubes 131 inside. The medium-transmitting tube 131 is a tube that penetrates the inside of the medium-transmitting member 13 along the longitudinal direction of the band shape of the medium-transmitting member 13 and opens at both ends of the medium-transmitting member 13. The cross-sectional shape of the transmission tube 131 is formed into a circular shape. Further, the cross-sectional shape of the transmission tube 131 is not limited to the circular shape, and may be formed into various polygonal shapes or elliptical shapes. Further, the number of the passing tubes 131 included in the passing member 13 may be one, or may be provided in a plurality.

The medium passing member 13 is connected so that the medium can be distributed between the medium passing tube 131 and the branch ports 112a to 112d and between the medium passing tube 131 and the branch ports 122a to 122d. With the strip-shaped flat portion facing up and down, the end face of the medium-transmitting member 13 facing the inflow collecting pipe 11 allows the medium to flow between the medium-transmitting pipe 131 and the branch ports 112a to 112d. The end face facing the discharge collecting pipe 12 has a shape so that the medium can flow between the medium passing pipe 131 and the branch ports 122a to 122d.

It will be described with reference to FIG. 6 showing a VI-VI plane which is a cross section of the medium-transmitting member 13 of the connection portion along the strip-shaped longitudinal direction. Although the cross section in which the transmission tube 131 and the branch port 112a are connected is illustrated, the portion where the other transmission tube 131 and the other branch ports 112b to 112d are connected is also formed in the same cross section.

As shown in FIG. 6, the mediating member 13 is connected to the inflow collecting pipe 11 by inserting the mediating member 13 into the inflow collecting pipe 11. The portion of the communication pipe 131 in the vicinity of both ends and connected to the branch port 112a is also referred to as the communication pipe 132. Further, the connection between the mediator member 13 and the inflow collecting pipe 11 is not limited to the one in which the mediator pipe 131 is inserted into the branch port 112a, and the medium flowing into the inflow collecting pipe 11 is each through. Any shape may be used as long as it is distributed in the medium tube 131. Although the connection between the inflow collecting pipe 11 and the mediating member 13 has been described here, the same connection may be made between the discharging collecting pipe 12 and the mediating member 13.

The side surface of the medium-transmitting member 13 facing the adjacent medium-transmitting member 13 is a surface substantially orthogonal to the surface on the upper side when the snowmelt mat 1 is arranged on the floor. The facing side surfaces are also surfaces along the longitudinal direction and the thickness direction of the band shape of the mediator member 13. In other words, the side surface of the medium-transmitting member 13 facing the adjacent medium-transmitting member 13 has a shape in which a space is formed between the adjacent medium-transmitting members 13 so that the snowmelt water is drained under the snowmelt mat 1. are doing. Further, the adjacent medium-transmitting members 13 are arranged so as to form the above-mentioned spacing. In the present embodiment, the facing medium members 13 will be described by applying to an example in which they are arranged so as to form the above-mentioned spacing. In other words, it will be described by applying it to an example in which the distance between adjacent medium-passing members 13 does not narrow or widen along the thickness direction and does not substantially change.

The spacing between the passing members 13 in the adjacent direction, in other words, the spacing between the passing members 13 in the strip-shaped direction in the lateral direction is set so as to be within the set spacing range which is a predetermined range. Here, the set interval range is set to be equal to or greater than the drainage threshold value and less than or equal to the walking threshold value. The drainage threshold value is the size of the gap through which water existing on each medium passage member 13 can flow, and the drainage threshold value is set to, for example, 0.1 mm. The walking threshold is the size of the gap that does not hinder the walking when the pedestrian walks on the snowmelt mat 1. The walking threshold is set to, for example, 5 mm.

In this embodiment, it will be described by applying it to an example in which the distance between the mediating members 13 adjacent to each other is about 0.1 mm or more and 5 mm or less.
Returning to FIG. 2, the holding member 14 is arranged on the back surface of the snowmelt mat 1. The holding member 14 holds the relative positions of the medium-transmitting members 13 arranged side by side, and holds the distance between the adjacent medium-transmitting members 13. The holding member 14 is a film-shaped member formed in a rectangular shape. The holding member 14 is arranged so that its longitudinal direction intersects the longitudinal direction of the mediator member 13. Further, the plurality of holding members 14 are arranged side by side at intervals in the longitudinal direction of the medium passing member 13. A sticking member to be stuck to the medium passing member 13 is provided on the back surface portion of the holding member 14. As the holding member 14, a material having strength for holding the relative positions of the mediating members 13 can be used. For example, a canvas or a cloth woven using synthetic fibers can be used.

As the holding member 14, a rubber sheet, an adhesive tape, a rubberized cloth, or the like may be specifically used.
[2. Action]
<Media flow>
Next, the flow of the medium passing through the snowmelt mat 1 will be described with reference to FIG. 7.

As shown by the arrows in FIG. 7, the medium flows into the snowmelt mat 1 from the inflow portion 111 of the inflow collecting pipe 11.
Then, the medium flowing in from the inflow portion 111 branches to each branch port 112a to 112d.

The medium branched at the branch ports 112a to 112d passes through the inside of the plurality of medium-passing pipes 131 provided inside the plurality of medium-transmitting members 13 connected to the branch ports 112a to 112d.
Then, it flows into each branch port 122a to 122d of the discharge collecting pipe 12 connected to each medium passing member 13. The medium that has flowed into the discharge collecting pipe 12 is discharged from the outflow portion 121 of the discharge collecting pipe 12.

The medium discharged from the outflow portion 121 of the discharge collecting pipe 12 may be discarded as it is. Here, when groundwater such as well water is used as a medium, the geothermal heat is transmitted to the groundwater, and the heat transferred to the groundwater can be used for snowmelt. Since heat based on geothermal heat can be used for snowmelt, no heating device such as a heater or boiler is required. As a result, it is possible to reduce the initial cost for providing the heating device and the energy cost for electric power and fuel for using the heating device. That is, the cost related to the heating device can be reduced.

<Heat exchange with medium>
Next, heat exchange between the inside and the outside of the medium passing member 13 will be described. The medium passes through the medium passing tube 131 provided inside the medium passing member 13. At this time, the heat of the medium passing through the transmission tube 131 is transferred to the transmission member 13. Then, the heat is transferred to the upper surface of the mediator member 13, so that the heat is transferred to the snow existing near the upper surface and melts the snow. Here, since the medium-transmitting member 13 contains a compounding agent having a high heat transfer property, the heat of the medium can be efficiently transferred to the upper surface of the medium-carrying member 13 as compared with the case where the compounding agent is not contained. ..

<Drainage of snowmelt water>
The heat from the medium transfers heat to the upper surface of the medium-transmitting member 13, so that the snow existing near the upper surface of the medium-transmitting member 13 melts. The band-shaped spacing between the passing members 13 in the lateral direction is arranged so that the passing members 13 are within a set spacing range from each other. Here, the set interval range is equal to or larger than the drainage threshold value, which is the size of the gap through which the water existing on each medium passing member 13 can flow.

Therefore, the snowmelt water generated by melting the snow is drained from between the mediating members 13 to the lower portion of the mediating member 13.
[3. effect]
(1) According to the snowmelt mat 1 described in the above embodiment, the distance between the mediator members 13 is set to be within the set interval range, and the set interval range is maintained by the holding member 14. The set interval range is the size of the gap that does not hinder the walking when the pedestrian walks on the snowmelt mat 1, and the gap through which the water on each of the mediator members 13 can flow. The size is set to 0.1 mm or more and 5.0 mm or less.

Therefore, the snowmelt mat 1 can achieve both walkability and drainage.
(2) In the snowmelt mat 1 described in the above embodiment, the mediator member 13 included in the snowmelt mat 1 includes an elastic body and a composition having a higher thermal conductivity than the elastic body. Therefore, the temperature of the medium flowing through the medium-transmitting tube 131 inside the medium-transmitting member 13 can be transmitted to the outside such as the upper part of the medium-transmitting member 13 due to the thermal conductivity of the compounding agent blended in the elastic body.

In addition, the strength of the medium-transmitting member 13 can be improved by the compounding agent. By improving the strength of the mediating member 13, the mediating member 13 can be made thinner.
Further, since the medium-transmitting member 13 is formed by blending fine particles having high heat-conducting properties with an elastic body, the weight is reduced as compared with the case where the entire medium-transmitting member 13 is made of a material having high heat-transmitting properties such as metal. can do.

(3) According to the above embodiment, the transmission tube 131 has an elastic modulus that enables the diameter of the transmission tube 131 to change due to a change in the pressure of the medium. Therefore, the size of the inner diameter of the transmission tube 131 can be expanded and contracted by the pressure change of the medium flowing in the transmission tube 131. By doing so, when an object that blocks the transmission tube 131 is generated inside the transmission tube 131, or when deposits are generated on the inner circumference of the transmission tube 131 and the flow path area is reduced, the passage is performed. By temporarily increasing the pressure inside the medium tube 131, the inner diameter of the medium tube 131 swells, and the pressure of the medium can push away objects and deposits. That is, it is possible to suppress the blockage of the transmission tube 131 due to an object or freezing, and the decrease in the flow rate of the transmission tube 131.

Specifically, when the inside of the transmission tube 131 is blocked by deposits or when the flow path area is reduced, the pressure of the medium can be temporarily increased. As a result, the inner diameter of the transmission tube 131 is increased. By enlarging the inner diameter of the transmission tube 131, the deposits are separated from the inner diameter of the transmission tube 131. The exfoliated deposits are washed away by the medium.

Further, even if the deposits adhere, they can be washed away as described above, so that even a medium such as water containing impurities such as well water that may generate deposits can pass through the snowmelt mat 1. Can be used as.

(4) Further, in the medium-transmitting member 13, the diameter of the medium-transmitting tube 131 swells and changes by 120% or more as compared with the case where the pressure is not applied due to the change in the pressure of the medium passing through the inside of the medium-transmitting tube 131. Is possible. According to such a medium-transmitting member 13, the deposits can be peeled off more efficiently.

(5) According to the above embodiment, the mediatoring member 13 has a shore hardness of 50 or more and 90 or less, an elongation at break when pulled, 250% or more, and a tensile strength of 8 MPa as compared with the case where no tensile stress is applied. That is all. Therefore, even if a pedestrian walks on the medium-transmitting member 13, breakage or wear of the medium-transmitting member 13 can be suppressed.

(6) According to the above embodiment, the holding member 14 has a sticking member to be stuck by the surface of a plurality of medium passing members 13. Therefore, the sticking member maintains the distance between the mediating members 13, and it is easy to maintain a state in which both drainage and walking are compatible.

(7) According to the above embodiment, since the plurality of holding members 14 are provided, the distance between the mediating members 13 is maintained by the plurality of holding members 14, and it is easy to maintain a state in which both drainage and walking properties are compatible. ..

(8) According to the above embodiment, since the change in the width of the plurality of medium-transmitting members 13 in the thickness direction is formed so as not to block the space between the medium-transmitting members 13, it is easy to secure the drainage property. For example, the snowmelt water generated by the melting of snow on the upper surface of the mediator member 13 does not interfere with the drainage to the lower part of the mediator member 13, and can be efficiently drained.

(9) According to the above embodiment, the plurality of medium passing members 13 are connected to the inflow collecting pipe 11 and the discharge collecting pipe 12, supply the medium to the inflow collecting pipe 11 and discharge the medium from the discharge collecting pipe 12. The medium passes through the inside of the duct member 13. Therefore, for example, it is not necessary to connect a hose for supplying and discharging the medium to each of the medium passing members 13, and the configuration of the snowmelt mat 1 can be simplified.

(10) According to the above embodiment, since the inner surface shape of the inflow portion 111 and the branch port 112 constituting the inflow collecting pipe 11 is a circular shape, for example, walking, as compared with the case where the inner surface shape is not a circular shape. It is easy to suppress the deformation of the inflow collecting pipe 11 due to the pressure applied to the inflow collecting pipe 11.

[3. Other embodiments]
(1) The surface of each medium passing member 13 may be colored. For example, as shown in FIG. 8, a colored medium-transmitting member 15, which is a colored medium-transmitting member, may be arranged. The color to be colored by the coloring medium member 15 may be, for example, a color such as yellow or red. When colored in yellow or red, it can attract the attention of pedestrians and prevent falls in terms of safety. In addition, the design is also improved.

(2) Further, the coloring may be applied directly to the medium passing member 13, and may be made to appear to be colored by, for example, attaching a colored holding member 14. In that case, in the above embodiment, the holding member 14 is arranged on the back surface side of the medium passing member 13 as shown in FIG. 5, but on the contrary, as shown in FIG. 9, the holding member 14 is noticeable to pedestrians. It may be arranged on the surface side.

(3) Further, characters and marks may be added to the surface of the holding member 14 by coloring such as printing. By adding characters and marks to the surface of the holding member 14, it is possible to provide information according to the added characters and marks through the visual sense of a pedestrian.

Examples of characters and marks may represent, for example, alerting pedestrians and the like. This makes it possible to improve the safety of walking by pedestrians and the like. Further, as the characters and marks, the direction such as the destination may be displayed. Further, it may have an advertising effect such as a company logo. That is, the holding member 14 may be used as an advertising medium or the like for transmitting information.

(4) Further, the portion of the holding member 14 to which the character or mark is added may have an uneven shape that matches the shape of the character or mark. Further, the shape of the holding member 14 itself may be formed in the shape of a character or a mark.

(5) The mediating member 13 may be integrally formed with the inflow collecting pipe 11 and the discharging collecting pipe 12, and the mediating member 13 is formed in the inflow collecting pipe 11 and the discharging collecting pipe 12. On the other hand, it may be formed so as to be detachably connected.

Further, when the mediating member 13 is formed so as to be detachably connected to the inflow collecting pipe 11 and the discharging collecting pipe 12, for example, when the mediating member 13 is worn, the mediating member 13 is replaced. , It is not necessary to replace the entire snowmelt mat 1. Therefore, the cost can be suppressed as compared with the case where the entire snowmelt mat 1 is replaced.

Further, when a marking such as a character or a mark is added to the holding member 14, the marking content can be changed by exchanging the holding member 14. Therefore, the marking content can be changed without replacing the medium-carrying member 13 itself. Therefore, it is possible to easily save the trouble of changing the marking content.

Further, when the visibility of the markings such as characters and marks is deteriorated due to dirt or wear, the visibility of the marking contents can be improved by replacing the holding member 14 to which the same markings are added. .. Therefore, in order to improve the visibility of the marking content, the visibility of the marking can be easily improved without replacing the medium-carrying member 13 itself.

(6) The holding member 14 may have a plurality of layers. The plurality of layers may include a marking layer to which characters and marks are added, and a protective layer which is a layer for protecting the surface of the marking layer. As a result, it is possible to prevent the characters and marks written on the marking layer from fading due to wear caused by the pedestrian walking on the holding member 14.

(7) In the above embodiment, the shape of the cross section inside the inflow portion 111 is formed to be a substantially circular shape, but the shape is not limited to the substantially circular shape. The shape of the inner cross section is not a substantially circular shape, but may be formed into a semicircular shape having a curved top surface, a pair of planar side surfaces, and a planar bottom surface, as shown in FIG. good. Since the top surface is curved according to such a cross-sectional shape, the force for deforming the top surface of the inflow collecting pipe 11 due to the external pressure applied to the top surface of the inflow collecting pipe 11 can be dispersed to suppress the deformation. can. Further, since the side surface and the bottom surface are flat, the flow rate of the medium passing through the inside of the inflow collecting pipe 11 can be improved.

(8) In the above embodiment, the cross-sectional shape of the transmission tube 131 is a substantially circular shape, but the cross-sectional shape is not limited to the substantially circular shape of the transmission tube 131. For example, it may have a semicircular shape similar to that of the inflow portion 111 in FIG. According to such a cross-sectional shape, since the top surface is curved as in the case where the cross-sectional shape inside the inflow portion 111 is the semicircular shape, the external pressure applied to the top surface of the transmission tube 131. As a result, the force that deforms the top surface of the transmission tube 131 can be dispersed and the deformation can be suppressed. Further, since the side surface and the bottom surface are flat, the flow rate of the medium passing through the inside of the transmission tube 131 can be improved.

(9) Further, the cross-sectional shape of the transmission tube 131 may be a shape having irregularities. According to the transmission tube 131 having an uneven shape in cross section, the surface area of the inner surface of the transmission tube 131 can be increased, so that the contact area between the transmission tube 131 and the medium passing through the inside of the transmission tube 131. Can be increased. As a result, the heat transfer efficiency to the transmission tube 131 with respect to the flow rate of the medium can be increased, so that the snowmelting ability can be improved even when the flow rate of the medium is small. Even if the inner surface of the transmission tube 131 has an uneven shape, the surface of the transmission member 13 may be formed flat. By forming the surface of the medium-transmitting member 13 flat, it is possible to improve the walkability of a pedestrian walking on the surface of the medium-transmitting member 13 as compared with the case where the surface of the medium-transmitting member 13 has an uneven shape. ..

(10) In the above embodiment, the snowmelt mat 1 includes a plurality of holding members 14, but the number of the holding members 14 provided in the snowmelt mat 1 is not limited to a plurality and may be one. .. Further, as shown in FIG. 2, the number of the holding members 14 included in the snowmelt mat 1 does not have to be four. That is, the number of the holding members 14 included in the snowmelt mat 1 may be 1 to 3, or 5 or more.

(11) In the above embodiment, the medium discharged from the outflow section 121 may be discarded, but the medium discharged from the outflow section 121 is configured to flow in again from the inflow section 111 of the inflow collecting pipe 11. It may be.

(12) Further, in the above embodiment, a heating device such as a heater or a boiler is not required, but a heating device may be provided. That is, for example, the medium discharged from the outflow section 121 may be warmed and then flowed in again from the inflow section 111. In other words, a medium capable of heating the medium flowing through the flow path for supplying the discharged medium to the snowmelt mat 1 again may be used.

Further, even if another snowmelt mat 1 similar to the snowmelt mat 1 is separately provided and the medium is supplied from the discharge collecting pipe 12 of the snowmelt mat 1 to the inflow collecting pipe 11 of the other snowmelt mat 1. good.

(13) In the above embodiment, the branch port 112, which is the opening of the inflow collecting pipe 11, is formed near the center in the vertical direction when the snowmelt mat 1 is arranged, in other words, in the thickness direction of the inflow collecting pipe 11. And said. However, the position where the branch port 112 is opened is not limited to such a position, and the position of the communication pipe 132 connected to the branch port 112 may also be set according to the position of the branch port 112. .. For example, as shown in FIG. 11, the branch port 113 corresponding to the branch port 112 may be formed on the side closer to the top surface than the center in the thickness direction, that is, on the upper half of the cross section of the inflow portion 111. By arranging the branch port 113 close to the top surface, the heat of the medium passing through the branch port 113 is easily transferred to the snow existing outside the communication pipe 132, and the snow melting ability can be improved. Similarly, the positions of the branch port 122 and the communication pipe 132 communicating with the branch port 122 of the discharge collecting pipe 12 do not have to be near the center in the thickness direction.

(14) The material of the inflow collecting pipe 11 and the discharging collecting pipe 12 may be the same material as that of the mediating member 13. Further, even if the material of the inflow collecting pipe 11 and the discharging collecting pipe 12 is different from that of the medium-carrying member 13, for example, desired hardness, strength, weather resistance, water resistance, liquid resistance, cold resistance, and heat conduction It may be a material having performance. The material of the inflow collecting pipe 11, the discharge collecting pipe 12, and the medium passing member 13 may be, for example, a metal or a resin having desired characteristics.

(15) In the above embodiment, as shown in FIG. 3, the inflow collecting pipe 11 is configured to have a square columnar shape opened in a bottomed cylindrical shape so that a medium such as water can pass through the inside. The shape of the inflow collecting pipe 11 is not limited to a square columnar shape opened in a bottomed cylindrical shape. For example, it may be formed in a cylindrical shape having both sides open, that is, having no bottom, as in the inflow collecting pipe 16 shown in FIG. In this case, when using the snowmelt mat 1, one of the inflow port 161a and the inflow port 161b at both ends of the cylinder may be closed.

1 ... Snowmelt mat, 11, 16 ... Inflow collecting pipe, 12 ... Discharge collecting pipe, 13 ... Communication member, 14 ... Holding member, 15 ... Colored communication member, 111 ... Inflow part, 112, 112a to 112d, 113, 122, 122a to 122d ... Branch port, 121 ... Outflow section, 131 ... Traffic pipe, 132 ... Communication pipe, 161a, 161b ... Inflow port.

Claims (13)

A plurality of medium-carrying members formed in a band shape, at least one surface in a flat shape, and at least one medium-carrying tube through which a fluid-like medium flows.
A holding member that holds the distance between the plurality of medium-carrying members arranged side by side in a plate shape to 0.1 mm or more and 5.0 mm or less.
An inflow / discharge section connected to the medium through the medium so that the medium can flow in or out.
Equipped with
A snowmelt mat containing an elastic body and a compounding agent having a higher thermal conductivity than the elastic body as a material for forming the medium-carrying member. The snowmelt mat according to claim 1 .
The mediating member is a snowmelt mat having elasticity that enables the diameter of the mediating tube to swell and change by 120% or more as compared with the case where the pressure is not applied due to a change in the pressure of the medium. The snowmelt mat according to claim 1 or 2 .
The medium-transmitting member is a snowmelt mat having a shore hardness of 50 or more and 90 or less, an elongation at break when pulled, 250% or more, and a tensile strength of 8 MPa or more as compared with the case where no tensile stress is applied. A plurality of medium-carrying members formed in a band shape, at least one surface in a flat shape, and at least one medium-carrying tube through which a fluid-like medium flows.
A holding member that holds the distance between the plurality of medium-carrying members arranged side by side in a plate shape to 0.1 mm or more and 5.0 mm or less.
An inflow / discharge section connected to the medium through the medium so that the medium can flow in or out.
Equipped with
The mediating member is a snowmelt mat having elasticity that enables the diameter of the mediating tube to swell and change by 120% or more as compared with the case where the pressure is not applied due to a change in the pressure of the medium. A plurality of medium-carrying members formed in a band shape, at least one surface in a flat shape, and at least one medium-carrying tube through which a fluid-like medium flows.
A holding member that holds the distance between the plurality of medium-carrying members arranged side by side in a plate shape to 0.1 mm or more and 5.0 mm or less.
An inflow / discharge section connected to the medium through the medium so that the medium can flow in or out.
Equipped with
The medium-transmitting member is a snowmelt mat having a shore hardness of 50 or more and 90 or less, an elongation at break when pulled, 250% or more, and a tensile strength of 8 MPa or more as compared with the case where no tensile stress is applied. The snowmelt mat according to any one of claims 1 to 5 .
The holding member is a snowmelt mat having a sticking member to be stuck to the surface of the plurality of mediating members. The snowmelt mat according to any one of claims 1 to 6 , wherein the snowmelt mat includes a plurality of the holding members. The snowmelt mat according to any one of claims 1 to 7 .
A snowmelt mat on which at least one of a character and a mark is marked on the surface of the holding member. The snowmelt mat according to claim 8 .
A snowmelt mat in which the shape of the marked portion, which is a portion where at least one of the characters and the mark is marked, is formed in a shape corresponding to the shape of the characters and the mark. The snowmelt mat according to any one of claims 1 to 9 .
The inflow / discharge section is a snowmelt mat having a collecting pipe capable of circulating the medium to and from each of the through pipes. The snowmelt mat according to claim 10 .
The inner surface of the collecting pipe is a circular snowmelt mat. The snowmelt mat according to claim 10 .
The inner surface shape of the collecting pipe is a snowmelt mat having a curved top surface, a pair of planar side surfaces, and a planar bottom surface. The snowmelt mat according to any one of claims 9 to 12 .
The communication pipe, which is a pipe in the vicinity region communicating with the collecting pipe in the communication pipe, is a snowmelt mat arranged in a region above the center in the thickness direction of the communication member.

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