JP2007032256A - Snow melting pavement block and snow melting pavement structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snow melting pavement structure enabling the easy installation of a heat medium pipe, a reduction in installation time, and easy partial repair of a road surface when the heat medium pipe is damaged in a technique for snow-melting or preventing the road surface from being frozen by running a heated heat medium in a pipe buried in a pavement layer on the road surface and supplying hot water by transmitting heat on the road surface to cold water flowing in the pipe. <P>SOLUTION: A pavement block for paving the road surface is divided into a foundation block 1 and an upper cove block 2. A pipe receiving part 6 specifying the position of the heat medium pipe is installed on the foundation block 1, and the heat medium pipe 4 disposed in the fitted state to the pipe receiving part is fixedly pressed by the upper cover block 2 from the upper side. The upper cover block 2 comprises a heat transfer material layer at a portion where the heat medium pipe 4 is pressed or the heat transfer member 3 dispersing heat in a planar direction is buried and exposed to the portion where the heat medium pipe 4 is pressed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention warms the road surface by flowing a heated heat medium through a pipe embedded in the pavement layer of the road surface to prevent snow melting or freezing of the road surface, and further, the solar water is applied to the water flowing through the pipe. The present invention relates to a technology that makes it possible to supply hot water by transmitting heat of a heated road surface.

  When a metal pipe or resin pipe is buried in the concrete or asphalt layer of the road surface paved with concrete or asphalt, and the temperature on the ground becomes low, there is a risk of snow accumulation or freezing on the road surface. A technique for heating a pavement surface from the inside by flowing hot water or other heat medium through the resin pipe and preventing the snow melting and freezing of the road surface with the heat is known.

In this conventional snow melting pavement structure, a flat foundation surface is formed, on which heat medium pipes made of metal pipes and resin pipes are arranged in a zigzag shape, and an underlying concrete layer is constructed so as to be embedded, Surface pavement is applied to the top. When there is a risk of snow accumulation or freezing on the road surface, water or other heat medium heated by a boiler or the like is passed through the heat medium pipe to warm the road surface from the inside, and the heat is used to prevent snow melting and freezing on the road surface.
JP 2003-239215 A

  The conventional snowmelt pavement structure as described above must be troublesome and time-consuming to position and fix the pipe when placing the heat medium pipe on the base, and after the ground concrete layer embedded with the heat medium pipe has hardened. In other words, there is a problem that the construction is troublesome and takes time because the rolling of the road surface cannot be performed. In addition, when the heat medium pipe is damaged due to uneven settlement of the ground or uneven elevation, there is a problem that it is very difficult to partially repair it.

  The present invention has been made to solve the above-described problems, and it is easy to install the heat medium pipe, shorten the construction time, and easily repair the road surface when the heat medium pipe is damaged. The goal is to obtain a snowmelt pavement structure that is possible.

  In the present invention, a paving block for paving a road surface by laying on a base is covered with a base block 1 (1a-1c, 1x, 1y) and an upper lid block 2 (2a-2c, 2x, 2y) covered thereon. The base block 1 is provided with pipe receiving portions 6 (6a, 6b) for defining the position of the heat medium pipe arranged below the road surface, and is arranged in a state of being fitted into the pipe receiving portions. The present invention provides a snow melting pavement block having a structure in which the heat medium pipe 4 is pressed and fixed from above by an upper cover block 2 which is covered on the basic block 1.

  The heat medium pipe 4 is positioned on the foundation block 1 by a pipe receiving portion 6 provided on the peripheral edge of the upper surface of the foundation block 1. The tube receiving portion 6 can be formed by a recess 6 a formed on the peripheral edge of the foundation block 1, or a pin or metal fitting 6 b planted or fixed on the peripheral edge of the foundation block 1. A heat transfer groove 10 is formed in the upper lid block 2 so as to be in surface contact with the peripheral surface of the heat medium pipe 4 positioned by the pipe receiving portion 6.

  The upper lid block 2 is provided with a structure that promotes heat transfer between the heat medium tubes 4. Moreover, the structure which improves heat insulation is provided to the foundation block 1 side. Thereby, the heat of the heat medium flowing through the heat medium pipe 4 is efficiently transmitted to the road surface, and the heat of the road surface by sunlight is efficiently transmitted to the heat medium flowing through the heat medium pipe.

  As a structure for imparting heat insulation to the basic block 1, for example, fine bubbles and heat insulating material are mixed in the concrete of the block, or the heat insulating material layer 26 and the air layer 5 are provided between the heat medium pipe 4. Further, by providing the heat insulating material layer and the shallow recess 27 on the bottom surface of the foundation block 1, the heat insulation between the foundation and the foundation block 1 can be enhanced. As a structure for improving the heat transfer property of the upper cover block 2, for example, a structure in which the upper cover block 2 is molded with concrete mixed with a good heat conductor such as metal powder, a bitumen or tar on the peripheral surface of the heat transfer groove 10 for holding the heat medium pipe 4 The structure which provides the heat-transfer material layer 30 provided with the plasticity etc. is employable. Furthermore, the efficiency between the heat medium pipe 4 and the road surface can be obtained by embedding and molding the heat transfer plate 3 of a good heat conductor provided with the arc bent portion 11 exposed on the groove surface of the heat transfer groove 10 that holds the heat medium pipe 4. Good heat transfer.

  The basic block 1 and the upper lid block 2 do not necessarily have the same planar shape, but by arranging one or a plurality of types of planar shapes together, the adjacent basic blocks and the adjacent upper lid blocks as well as the basics are arranged. The shape is defined such that the positional relationship between the block 1 and the upper lid block 2 covered thereon is defined. Moreover, let the top cover block 2 be a planar shape which can be laid out without gap except a joint by the combination of 1 type or multiple types of shape.

  Adjacent base blocks and upper lid blocks are positioned by abutment or fitting of their outer peripheries. The base block 1 (1a to 1c, 1x, 1y) and the upper lid block 2 (2a to 2c, 2x, 2y) covered thereon are the contact surfaces thereof, that is, the upper surface of the base block and the lower surface of the upper lid block. Are positioned in the horizontal direction by fitting the projections and depressions 5 and 9 provided on the top or the heat medium pipe 4 fixed in position between both blocks.

  The snowmelt pavement block according to the invention of claim 1 of the present application includes a base block 1 (1a to 1c, 1x, 1y) laid on a plane and an upper lid block 2 (2a to 2c, 2x) covered with the base block. 2y), the basic block 1 is provided with pipe receiving portions 6 (6a, 6b) for defining the piping position of the heat medium pipe 4 arranged between the upper cover block 2 and the upper cover block 2 It is a snowmelt pavement block provided with the heat-transfer groove | channel 10 which contacts the surrounding surface of the heat-medium pipe | tube 4 positioned by the part.

  The snow melting pavement block according to the invention of claim 2 of the present application includes a foundation block 1 (1a to 1c, 1x, 1y) having a planar shape capable of arranging a plurality of pieces on a plane without gaps, and covers the foundation block. The top cover block 2 (2a to 2c, 2x, 2y) having the same shape is formed. The base block 1 is provided with pipe receiving portions 6 (6a, 6b) at two peripheral edges thereof. The snowmelt pavement block is provided with a heat transfer groove 10 having both ends connected to the tube receiving portion, and a plastic heat transfer material layer 30 on the groove surface of the heat transfer groove.

  Moreover, the snow-melting pavement block according to the invention of claim 3 of the present application includes a foundation block 1 (1a to 1c, 1x, 1y) having a planar shape in which a large number can be arranged on a plane without gaps, and the foundation block. The upper cover block 2 (2a to 2c, 2x, 2y) having the same planar shape to be covered is provided. The basic block 1 is provided with pipe receiving portions 6 (6a, 6b) at two peripheral edges thereof. The tube receiving portion is provided with a heat transfer groove 10 which is connected at both ends, and the arc bent portion 11 of the heat transfer plate 3 (3a, 3c) embedded in the upper cover block is exposed on the groove surface of the heat transfer groove. It is a snowmelt pavement block.

  The snow-melting road surface structure according to the invention of claim 6 of the present application includes a large number of laid foundation blocks 1 (1a to 1c, 1x, 1y) and an upper lid block 2 (2a to 2c, 2x) covered with the foundation blocks. 2y) and a heat medium pipe 4 disposed on the plurality of base blocks in a state of being sandwiched between the base block 1 and the upper cover block 2, the upper cover block being a peripheral surface of the heat medium pipe It is a snowmelt road surface structure provided with the heat-transfer groove | channel 10 which contacts.

  The snow melting road surface structure according to claim 7 of the present application is the snow melting road surface structure having the structure according to claim 6, wherein the snow melting road surface structure is embedded in the upper cover block and exposed to the groove surface of the heat transfer groove. The snow melting road surface structure is characterized by including a heat transfer plate 3 (3a, 3c) in contact with the peripheral surface of the medium tube.

  In the snow melting pavement structure of the present invention, the foundation block 1 is laid out on the base surface finished in a plane, and the heat medium pipe 4 is fitted and arranged in a plurality of pipe receiving portions 6 formed thereby, and the upper cover is placed thereon. It is constructed by covering the block 2 and filling the joint 7 with mortar or the like. By using a flexible resin tube as the heat medium tube 4, the heat medium tube 4 can be arranged and positioned on the laid foundation block 1 very quickly and easily.

  The heat medium pipe 4 disposed on the base block 1 is fixed in a state where the outer peripheral upper surface thereof is in surface contact with the peripheral surface of the heat transfer groove 10 of the upper lid block 2. By providing the plastic heat transfer material layer 30 on the peripheral surface of the heat transfer groove 10, good adhesion between the upper lid block 2 and the heat medium pipe 4 can be obtained. In addition, the exposed portion 11 of the heat transfer member 3 embedded in the upper lid block 2 is pressed and fixed from above. Since the outer peripheral upper surface of the heat transfer medium tube 4 and the heat transfer member 3 are in direct contact, the heat of the medium that has flowed through the heat transfer medium tube 4 is transferred to the heat transfer member 3 and diffused planarly to the upper lid block 2. .

  The snow melting pavement block according to the invention of claim 4 of the present application includes a base block 1c laid on a flat surface and an upper cover block 2c covered by the base block. The base block 1c has a photoelectric converter 15 on the upper surface. The housing 5 is provided with a tube recess 6 for defining the piping position of the heat transfer medium tube 4 and a wiring groove 18 for inserting the cable of the photoelectric converter, and the upper lid block 2c is positioned. The heat transfer member 3c contacting the peripheral surface of the heat transfer medium tube and the transparent body window 20 facing the recess are provided.

  The snow melting pavement block according to claim 5 of the present application is the snow melting pavement block provided with the means according to claim 3, wherein the transparent body of the transparent body window 20 refracts or totally reflects light passing therethrough. The light is condensed on the photoelectric converter 15. The transparent body that refracts light is, for example, a rod lens, and the transparent body that totally reflects light is, for example, a prism.

  The pavement structure constructed using the block with the above structure prevents snow melting or freezing by flowing hot water heated by a boiler or the like to the heat medium pipe 4 during cold weather and transferring the heat to the road surface. Heat can be transferred to cold water flowing through the heat medium pipe 4 to be used as a heat source for hot water supply, and solar power generation can be performed by the photoelectric converter (solar panel) 15 in fine weather.

  According to the pavement structure using the snow melting pavement block of the present invention, it is possible to warm the road surface by flowing a heating medium through the heat medium pipe 4 in a cold region, thereby preventing snow accumulation and freezing. In summer, the heat of the road heated by solar heat can be absorbed by water flowing through the heat medium pipe 4 and other heat medium and used as a heat source for hot water supply, etc., and the temperature rise of the road surface can be suppressed to suppress the heat island phenomenon. can do.

  In the road pavement structure according to the present invention, the heat medium pipe 4 is positioned by fitting into the base block 1 pipe receiving portion 6 laid on the base, so that the installation work of the heat medium pipe 4 is extremely quick and easy. It is possible to lay the upper cover block 2 immediately after the heat medium pipe 4 is installed, and it is not necessary to wait for the concrete layer in which the heat medium pipe is embedded as in the prior art. Can be greatly shortened.

  Further, when the heat medium pipe 4 is damaged, a part of the upper cover block 2 on the road surface is removed, and if necessary, a part of the foundation block 1 is removed, and if necessary, the foundation surface is repaired. The work of laying the basic block 1 and reconnecting the cut and removed heat medium pipe 4 and laying the new upper cover block 2 has the effect of partially repairing the road surface.

  Moreover, by providing the plastic heat transfer material layer 30 in the heat transfer groove 10 provided in the upper cover block 2, the upper cover block 2 and the heat medium pipe 4 are brought into close contact with each other, and good heat transfer between them is obtained. Further, by adopting a structure in which the upper surface of the heat medium pipe 4 is pressed and fixed by the heat transfer member 3 made of a good heat conductor embedded in the upper cover block 2, the road surface and the heat medium flowing through the heat medium pipe 4 are arranged. The heat transfer efficiency can be improved to improve the heat efficiency.

  Moreover, if the transparent body window 20 is provided in the upper cover block 2c and the photoelectric converter 15 arranged in the recess 5 of the basic block 1c is irradiated with sunlight, power is generated by sunlight falling on the road surface in fine weather. Therefore, by constructing such a pavement structure on a road surface that occupies a large area, there is an effect that a considerable amount of power can be supplied.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial perspective view showing a part of the snow melting pavement structure of the first embodiment, wherein 1a and 1x are foundation blocks, 2a and 2x are upper cover blocks, both of which are molded in a concrete molding factory. A secondary concrete product. 2 is a perspective view of the basic block 1a, FIG. 3 is a sectional view of the upper lid block 2a, and FIG. 4 is a perspective view of the heat transfer plate 3a embedded in the upper lid block 2a.

  The base blocks 1a, 1x and the upper cover blocks 2a, 2x are squares having the same shape in plan view. A square recess 5 slightly deeper than the diameter of the heat medium pipe 4 is formed on the upper surfaces of the base blocks 1a and 1x. A U-shaped tube receiving portion 6a is formed at the center of the two opposing sides of the edge portion of the base block 1a so that the lowest portion has the same depth as the bottom surface of the recess 5. The pipe receiving portions 6a of the foundation block 1x arranged on both sides of the pavement structure are provided on two adjacent sides, and the heat medium pipe 4 is bent 90 degrees in the recess 5 of these foundation blocks 1x. .

  The heat medium pipe 4 is disposed in a zigzag manner between the foundation blocks 1a and 1x of the pavement structure and the upper cover blocks 2a and 2x in a state where the heat receiving medium pipe 4 is positioned in the middle by the pipe receiving portions 6a of the foundation blocks 1a and 1x. ing. It is preferable to embed a semi-annular heat insulator such as foamed concrete at the bottom of the tube receiving portion 6a in contact with the heat medium tube 4.

  A protruding portion 8 corresponding to the width of the joint 7 when the block is laid is formed on the outer side surface of the portion where the pipe receiving portions 6a of the basic blocks 1a and 1x are provided.

  The upper lid blocks 2a and 2x are provided with protrusions 9 having a height substantially equal to the radius of the heat medium pipe 4 and fitted in the recess 5 of the basic block. The upper lid blocks 2a and 2x are positioned and placed on the base blocks 1a and 1x by the fitting of the protrusion 9 and the recess 5. The protrusions 9 of the upper lid blocks 2a and 2x are formed in a direction along the extending direction of the heat medium pipe 4 in the opposite recess 5, that is, in the linear shape in the upper lid block 2a, and in the upper lid block 2x, a 90 degree circle. An arcuate inverted U-shaped heat transfer groove 10 is formed. The depth of the heat transfer groove 10 is such that when the upper cover blocks 2a and 2x are covered with the basic blocks 1a and 1x, the heat transfer medium tube 4 is sandwiched between the tube receiving portion 6a and the bottom surface of the recess 5 It is the depth to do.

  The protrusion 9 of the upper lid block may not have a height that reaches the bottom surface of the recess 5. A space formed between the bottom surface of the recess 5 and the lower surface of the protrusion 9 becomes a heat insulating space.

  The heat transfer groove 10 is formed with a depth that covers at least the upper half of the outer periphery of the heat transfer medium tube 4, and the circular arc bent portion 11 of the heat transfer plate 3a shown in FIG. That is, the heat transfer plate 3a is provided such that the arc bent portion 11 is exposed on the bottom surface of the heat transfer groove 10 and heat transfer blades 12 extending on both sides thereof are embedded in the upper lid block 2a. .

  The heat transfer plate 3a is made of an iron plate that also serves as a reinforcement for the upper lid block 2, and an arc-shaped bent portion 11 that is in surface contact with the upper surface of the heat transfer tube 4 is formed at the center. It embeds in 2a so that the heat | fever of the circular arc bending part 11 may be transmitted to the whole upper cover block 2a. The heat transfer blade 12 is provided with a number of upwardly raised cuts 13 to increase the heat transfer area to the upper surface side of the block.

  In the pavement structure shown in FIG. 1, the foundation blocks 1a and 1x are laid on a base that has been pressed into a flat surface with the bottom face fixed with mortar, and the heat medium pipe 4 is fitted on the pipe receiving portion 6a thereon. The base block 1x on the side of the structure is bent 90 degrees at a time and U-turned, arranged in a zigzag, and the upper lid blocks 2a and 2x are joined with mortar to cover the gap between the blocks. Built by filling joint mortar. The end of the heat medium pipe 4 is connected to piping to a hot water boiler or the like using a connection block similar to the conventional structure.

  FIG. 5 is a partial perspective view showing the snow-melting pavement structure of the second embodiment in a partially broken view, wherein 1b and 1y are basic blocks, and 2b and 2y are upper lid blocks. 6 is a perspective view of the upper lid block 2b as viewed from below, and FIG. 7 is a partial cross-sectional view of a portion where the heat medium pipe 4 is disposed.

  The base blocks 1b and 1y and the upper cover blocks 2b and 2y in the second embodiment are rectangular in shape in plan view, and a recess 25 is provided at the center of the short side of the base blocks 1b and 1y as a handle for lifting the block. Is formed. The upper surface of the foundation blocks 1b and 1y is a flat plane provided with a heat insulating material layer 26, and a shallow recess 27 in the longitudinal direction of the block to be a heat insulating air layer is formed on the lower surface. The heat insulating material layer 26 is, for example, a ceramic coating layer containing fine bubbles, a foamed resin coating layer, a resin sheet, or the like. The heat insulating material layer 26 and the recess 27 are provided to reduce heat loss caused by heat transmitted from the heat medium pipe 4 to the base blocks 1b, 1x and the road base.

  The tube receiving portion 6b for positioning the heat transfer tube 4 on the foundation blocks 1a and 1x is formed by a pair of pins inserted into a pair of pin holes 28 formed on the peripheral edges of the foundation blocks 1a and 1x.

  On the lower surface of the upper lid block 2a, 2x, a direction along the extending direction of the heat medium pipe 4 positioned on the basic block 1a, 1x by the tube receiving portion 6b, that is, two parallel straight lines in the upper lid block 2a. Thus, the upper lid block 2x at the end of the pavement structure is formed with two arc-shaped heat transfer grooves 10 which are U-shaped or bent 90 degrees in directions opposite to each other.

  As shown in FIG. 7, the heat transfer groove 10 of the second embodiment has a trapezoidal cross section and a depth deeper than the radius of the heat medium pipe 4. In the portions facing the tube receiving portions 6 b at both ends of the heat transfer groove 10, recessed portions 31 having a shape in which the groove width is widened are provided. A heat transfer material layer 30 coated with plastic bitumen or pitch is provided on the inner surface of the heat transfer groove 10, and the heat transfer material layer 30 is filled between the heat transfer groove 10 and the heat medium pipe 4. The air layer formed between the two prevents the heat transfer efficiency from decreasing.

  The heat medium pipe 4 is arranged on the foundation blocks 1b and 1y on the foundation, and then the upper lid blocks 2b and 2y are covered with mortar and the like. When the upper cover blocks 2b and 2y are covered with the base blocks 1b and 1y, the heat transfer grooves 10 are fitted into the heat transfer tubes 4 positioned by the pipe receiving portions 6b of the corresponding base blocks, thereby positioning the upper cover blocks 2b and 2y. Is done. By making the heat transfer groove 10 have a trapezoidal cross section, the upper lid blocks 2b and 2y can be accurately positioned.

  FIG. 8 is a partial perspective view showing the pavement structure of the third embodiment partially broken. This third embodiment incorporates a photoelectric converter 15 for disposing the heat medium pipe 4 below the road surface and performing solar thermal power generation. 9 and 10 are a perspective view and a sectional view of the upper lid block 2c of the third embodiment, FIG. 11 is a perspective view of the base block 1c, and FIG. 12 is a perspective view of the heat transfer plate 3c embedded in the upper lid block. .

  The foundation block 1c is provided with a recess 5 similar to that of the first embodiment, and on the opposite two sides (two neighboring sides in the foundation block arranged on the side of the pavement structure), the heat medium pipe 4 is provided. Two groove portions of the tube receiving portion 6a and the wiring groove 18 are provided. As in the first embodiment, the heat medium tube 4 is disposed in the tube receiving portion 6 a, and the wiring groove 18 serves as a passage for the electric cable 19 connected to the photoelectric converter 15. A photoelectric converter (solar panel) 15 is fixed to the bottom surface of the recess 5, and a cable 19 connected to the solar panel 15 is wired through a wiring groove 18.

  Similar to the first embodiment, the upper lid block 2c includes a protrusion 9 that fits into the recess 5 of the basic block on the lower surface, and positions the opposite ends of the pipe block receiving portion 6a of the basic block at both ends. A heat transfer groove 10 is provided. The upper lid block 2c includes a transparent window 20 in which a transparent resin such as polycarbonate or a transparent body made of tempered glass is fitted on both sides of the heat transfer groove 10. As shown in FIG. 12, the heat transfer plate 3c embedded in the upper lid block 2c has a shape in which a cutout window 21 is provided in the transparent body window 20 portion.

  The snow melting pavement structure constructed with the blocks of the third embodiment flows a heat medium through the heat medium pipe 4 during cold to prevent snow melting and freezing on the road surface, and heats the road surface through the heat medium pipe 4 in summer. In addition to transferring heat to the refrigerant body as a heat source for a hot water supply facility or the like, the electricity generated by the photoelectric converter 15 can be stored in a battery and used in fine weather.

The partial perspective view which destroys a part and shows the snowmelt pavement structure of 1st Embodiment The perspective view of the basic block of 1st Embodiment Cross-sectional view of the same lid block A perspective view of the heat transfer plate embedded in the same lid block The partial perspective view which destroys a part and shows the snowmelt pavement structure of 2nd Embodiment The perspective view which looked at the upper cover block of 2nd Embodiment from the downward direction Partial sectional view of the heat medium pipe arrangement part of the second embodiment The partial perspective view which destroys and shows the pavement structure of 3rd Embodiment partially The perspective view of the upper cover block of 3rd Embodiment Cross section The perspective view of the basic block of 3rd Embodiment The perspective view of the heat exchanger plate currently embed | buried under the upper cover block of 3rd Embodiment.

Explanation of symbols

1a ~ 1c, 1x, 1y basic block
2a ~ 2c, 2x, 2y Top cover block
3a, 3c Heat transfer plate 4 Heat transfer tube 5 Recess
6a, 6b Tube receiving part 9 Projection
10 Heat transfer groove
11 Arc bend
15 Photoelectric converter
18 Wiring groove
20 Transparent window
26 Insulation layer
27 recess
30 Heat transfer material layer

Claims (7)

  A heat transfer medium pipe comprising a foundation block (1) laid on a flat surface and an upper lid block (2) covered by the foundation block, the foundation block (1) being arranged between the upper lid block (2) (4) is provided with a pipe receiving part (6) that defines the piping position, and the upper lid block (2) is provided with a heat transfer groove (10) that contacts the peripheral surface of the heat transfer medium pipe positioned by the pipe receiving part. Snow melting pavement block.   It consists of a basic block (1) with a planar shape that can arrange a large number of pieces without gaps on the plane, and an upper lid block (2) with the same shape as the plane that is covered by this basic block. A pipe receiving part (6) is provided at two peripheral edges, and the upper cover block (2) is provided with a heat transfer groove (10) with both ends connected to the two pipe receiving parts, and the groove surface of the heat transfer groove is plastic. Snow melting pavement block with heat transfer material layer (30).   It consists of a basic block (1) with a planar shape that can arrange a large number of pieces without gaps on the plane, and an upper lid block (2) with the same shape as the plane that is covered by this basic block. A pipe receiving part (6) is provided at two peripheral edges, and the upper cover block (2) is provided with a heat transfer groove (10) having both ends connected to the two pipe receiving parts, and an upper cover is provided on the groove surface of the heat transfer groove. A snowmelt pavement block in which the arc bent part (11) of the heat transfer plate (3) embedded in the block is exposed.   A base block (1c) laid on a flat surface and an upper cover block (2c) covered by the base block, the base block (1c) has a recess (5) containing a photoelectric converter on the upper surface. And a pipe receiving part (6) for defining the piping position of the heat medium pipe (4) and a wiring groove (18) for inserting the cable of the photoelectric converter at the periphery of the lever, and the upper cover block (2c) A snow-melting pavement block comprising a heat transfer groove (10) that contacts the peripheral surface of the heat medium pipe and a transparent window (20) that faces the recess.   The snow melting pavement block according to claim 4, wherein the transparent body of the transparent body window (20) refracts or totally reflects light passing therethrough and condenses it on the photoelectric converter (15).   Numerous foundation blocks (1), the upper lid block (2) covered by the foundation block, and the foundation blocks (1) and the upper lid block (2). A snow melting road surface structure including a heat medium pipe (4) disposed on the upper cover block, and wherein the upper cover block includes a heat transfer groove (10) in contact with a peripheral surface of the heat medium pipe.   The snow melting road surface structure according to claim 6, further comprising a heat transfer plate (3) embedded in the upper lid block and exposed to the groove surface of the heat transfer groove to be in contact with the peripheral surface of the heat transfer medium tube.

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