JP2005273406A - Snow melting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snow melting device which enables a linear heating unit to be arranged easily and meanderingly on an upper surface of a roof while suppressing turning up of a sheet due to wind and is made compact when stored. <P>SOLUTION: The snow melting device is provided with the linear heating unit 1 and a heat transfer cover 2. The linear heating unit 1 is meanderingly arranged to melt snow on the upper surface of the roof. The heat transfer cover 2 covers respective longitudinal directions of a plurality of linear parts and is provided with a combining member 3 for combining adjacent heat transfer covers 2 not to be apart from each other beyond a specified interval. A plurality of the combining members 3 are arranged between the adjacent heat transfer covers 2 with intervals in the longitudinal direction of the heat transfer cover 2. The heat transfer cover 2 is configured to be rotatably connected with the combining member 3 around an axial line in the longitudinal direction of the heat transfer cover 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a snow melting device for melting snow on a roof.

  Conventionally, a snow melting device has a flexible linear heating element arranged on a roof surface in a meandering shape composed of a curved portion and a straight portion to melt snow on the roof, and between the meandering straight portion and the straight portion. A wide space on the roof can be heated with a predetermined interval. In the snow melting device described in Patent Document 1 below, the linear heating element 1 is covered with a heat transfer cover 2 as shown in FIG. 17 so as to enhance outdoor durability, and the heat transfer cover 2 is used for positioning. By fixing to the plate 70, a predetermined interval A is provided between the linear portion and the linear portion described above.

Further, in the snow melting device described in the following Patent Document 2, in order to be able to easily arrange the snow melting device on the upper surface of the roof as shown in FIG. 18, the flexible front and back sheets 71 (72) The linear heating element 1 is arranged in a meandering manner between the two sheets 71 (72), and the linear heating element 1 is sandwiched between the two sheets 71 (72) so that a predetermined interval is provided between the linear portion and the linear portion. B is given.
Utility Model Registration No. 3086327 JP-A-8-28094

  However, in the snow melting device described in Patent Document 1, the linear heating element 1 is fixed to the positioning plate 70 so as to keep the distance A between the linear portion and the linear portion. Cannot be set to. Therefore, it is difficult to attach the snow melting device, and the snow melting device is used while being arranged on the roof. Therefore, when the snow melting device is not used, it is affected by changes in sunlight or outside air temperature, and there is a problem that durability is deteriorated as compared with the case where it is stored indoors.

  Moreover, the snow melting apparatus described in Patent Document 2 keeps the interval B between the linear portion and the linear portion by sandwiching the linear heating element 1 inside the flexible sheet 71 (72). Not only can it be easily placed on the roof with B maintained, but it can also be stored compactly when removed from the roof. However, when such a snow melting device is arranged on the roof, the state where the sheet 71 (72) rolls up by receiving wind and then falls to the top surface of the roof is repeated, and the load on the linear heating element increases. As a result, there was a problem that the durability deteriorated.

  In view of the above problems, the present invention provides a snow melting device that allows a linear heating element to be arranged in a meandering manner on the roof top surface while suppressing the occurrence of wind-up due to wind and can be made compact when stored. This is the issue.

  The present invention has been made to solve the above problems, and includes a flexible linear heating element and a plurality of heat transfer covers formed of a hollow heat transfer material. A plurality of straight portions arranged in parallel at predetermined intervals and a curved portion curved so as to connect ends of the straight portions are arranged in a meandering shape so as to melt snow on the roof top surface. The heat transfer cover includes a coupling member that couples adjacent heat transfer covers so as not to be separated beyond a certain distance in a snow melting device that covers the longitudinal directions of the plurality of linear portions, and the coupling members are adjacent to each other. A plurality of heat transfer covers are provided at intervals in the longitudinal direction of the heat transfer cover, and the heat transfer cover is connected to the coupling member so as to be rotatable about the longitudinal axis of the heat transfer cover. .

  In the snow melting device having such a configuration, a flexible material is used to make the linear heating element meander. In addition, the heat transfer cover is formed of a hollow heat transfer material so as to cover the linear heating element and facilitate heat dissipation to melt snow. The coupling members are coupled so that adjacent heat transfer covers are not separated beyond a certain distance. When arrange | positioning a linear heating element on a roof upper surface, a predetermined space | interval is opened between adjacent heat-transfer covers by a coupling member. As a result, it is possible to melt snow on the roof top surface over a wide range. Moreover, when removing a linear heat generating body from a roof upper surface, a heat transfer cover rotates by making the longitudinal direction of a heat transfer cover into an axis line with a coupling member. As a result, the heat transfer cover rotates away from the roof top surface toward the adjacent heat transfer cover. Next, the adjacent heat transfer cover is moved away from the roof top surface and further rotated toward the adjacent heat transfer cover. By linearly rotating the arranged heat transfer covers, the linear heating elements meanderingly arranged on the upper surface of the roof can be bent between adjacent heat transfer covers. In addition, a coupling member is disposed between the heat transfer covers with an interval, and since a space is formed between the coupling member and the coupling member, a passage through which wind passes is formed. If a passage for the passage of wind is formed in this way, even if the linear heating element receives wind, most of it passes through this passage, so that the linear heating element receives less force from the wind, The occurrence of wind-up due to wind can be suppressed.

  The snow melting device according to the present invention includes a flexible linear heating element and a plurality of heat transfer covers formed of a hollow heat transfer material, and the linear heating element is spaced at a predetermined interval. A plurality of linear portions arranged side by side and a curved portion curved so as to connect the ends of the linear portions are arranged in a meandering shape so as to melt snow on the roof top surface, In the snow melting device that covers the longitudinal direction of each of the plurality of linear portions, the elastic member is provided between the adjacent heat transfer covers with an interval in the longitudinal direction of the heat transfer cover, and the elastic member is bent. Thus, the distance between the heat transfer covers is narrowed and the distance between the heat transfer covers is increased by extending the distance.

  In the snow melting device having such a configuration, the space between the heat transfer covers can be reduced while the expansion member is bent, and the space between the heat transfer covers can be widened in the extended state. Therefore, when the snow melting device is arranged on the roof, the stretchable member can be extended to provide a predetermined space between the meandering straight portion and the straight portion. Moreover, when storing the snow melting device, the space between the straight portion and the straight portion of the meandering shape can be narrowed and made compact by making the elastic member bent. Furthermore, an elastic member is disposed between the heat transfer covers at an interval, and a passage for the passage of wind is formed. When the wind passes through the passage, the force received by the snow melting device from the wind is reduced, and the occurrence of the winding of the snow melting device by the wind can be suppressed.

  Further, since the linear heating element includes the PTC element as a heat source, a constant temperature can be maintained without providing a control device or the like.

  Moreover, since the PTC element is provided only in the range of the linear portion of the linear heating element, the PTC element is not easily affected by the change in the bending angle of the curved portion of the linear heating element or the twist of the curved portion. .

  In addition, since the PTC element is provided in the range of the linear portion of the linear heating element and the range excluding the apex of the curved portion, the curved portion is also provided with a heating portion and the load on the curved portion is concentrated. Since the PTC element is not provided at the easy apex, it is more preferable.

  In the present invention, when the snow melting device is arranged on the roof, a gap can be provided between the heat transfer covers by the coupling member. Furthermore, when removing the snow melting device from the roof top surface, the linear heating elements meanderingly arranged on the roof top surface are bent between adjacent heat transfer covers by rotating the arranged heat transfer covers in order. be able to. When the linear heating elements between adjacent heat transfer covers are all bent, the length of the heat transfer cover in the short direction can be shortened as compared to the case where the heat transfer covers are meandered. Furthermore, since the coupling members between the heat transfer covers are arranged at an interval, a passage for the passage of wind is formed. When the wind passes through the passage, the force received by the snow melting device from the wind is reduced, and the occurrence of the winding of the snow melting device by the wind can be suppressed.

(First embodiment)
Hereinafter, a snow melting device according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing the overall configuration of the snow melting device. As shown in FIG. 1, the snow melting device combines a flexible linear heating element 1, a plurality of heat transfer covers 2 formed of a hollow heat transfer material, and the heat transfer covers 2 together with heat transfer. A ring member 3 is provided as a coupling member for setting the interval between the covers 2.

  As shown in FIGS. 2A and 2B, the linear heating element 1 is formed in a linear shape in which the cross-sectional shape in the short direction is an oval shape, and the terminal is sealed at a position to be the terminal. The terminal sealing 1a for this is provided. The terminal sealing 1a is covered with a synthetic resin cap and waterproofed. As shown in FIG. 2B, the linear heating element 1 has a plurality of recesses 1b. Further, as shown in FIG. 2C, the linear heating element 1 is connected to a connecting portion 8a, and a power cord 8 is connected to the connecting portion 8a so that electricity can be supplied from a power source. . In addition, as a flexible linear heating element, a heating element formed in a linear shape such as a string, a tape, a belt, and a belt can be arranged in a meandering shape, and when used as a snow melting device, the roof top surface Any softness can be used as long as it can be taken up when removed.

  As shown in FIG. 2 (D), which is a cross-sectional view taken along line AA of FIG. 2 (B), the linear heating element 1 has a tape shape, that is, a flat cross-sectional shape (substantially track-like cross-sectional shape). It is. As an example of the dimensions of the cross-sectional shape, the width (long side length) is 16 mm and the thickness (short side length) is 4.5 mm.

  As shown in FIG. 2D, the internal structure of the linear heating element 1 is such that a PTC element 5 (Positive Temperature Coefficient) serving as a heat source is disposed at the center of the linear heating element 1, and conductors 4 are provided on both sides of the PTC element 5. Is provided. A connection terminal 6 for connecting the conductor 4 and the PTC element 5 is provided between the PTC element 5 and the conductor 4. The linear heating element 1 is formed by covering the PTC element 5, the conductor 4, and the connection terminal 6 with an insulator 1c made of a synthetic resin having flexibility. Further, the internal structure of the linear heating element 1 will be described with reference to FIG. 2E. The conductors 4 are arranged on both sides of the linear heating element 1 so as to extend in the longitudinal direction of the linear heating element 1, respectively. Has been. The PTC element 5 is provided between the conductor 4 and the conductor 4. The PTC elements 5 are provided at intervals in the longitudinal direction of the linear heating element 1. Incidentally, as the PTC element 5, a resistor having excellent thermal conductivity, that is, a ceramic-based resistor using barium titanate or a polymer composition containing a particulate conductive agent such as carbon black. Polymers can be used. The PTC element 5 in the present embodiment is, for example, a substantially rectangular parallelepiped ceramic semiconductor mainly composed of the above-described barium titanate, and has a low resistance from room temperature to the Curie temperature (resistance sudden change temperature). If it exceeds, it is a thermal element having a characteristic that the resistance value suddenly increases. Due to this characteristic, when a voltage is applied to the PTC element 5 at a temperature lower than the Curie temperature, since the resistance value is small because the temperature is initially low, a large current flows and the temperature of the PTC element 5 rapidly increases. . When the temperature of the PTC element 5 exceeds the Curie temperature, the resistance value suddenly increases, so that the amount of current decreases, and as a result, the amount of heat generated by the PTC element 5 decreases. Therefore, the PTC element 5 does not rise above a predetermined temperature and stably maintains a thermal equilibrium state at a constant temperature. That is, the PTC element 5 has a self-temperature control function. Therefore, it is not necessary to separately provide a temperature control circuit for controlling the amount of heat generation, an overheat prevention circuit, or the like. Incidentally, the PTC element 5 is formed in a rectangular parallelepiped shape having a width of 6 mm, a length of 8.3 mm, and a thickness of 1.7 mm, for example.

  Here, a method of forming the linear heating element 1 will be described with reference to FIGS. As shown in FIG. 3A, the element connection portions 6b of the connection terminals 6 are pressure-bonded to the two opposite sides of the PTC element 5, respectively. Next, the PTC element 5 is heated in a state where the element connection portion 6b is pressure-bonded. The connection terminal 6 is plated with a solder alloy, and the plated solder alloy is melted by the heating, so that the PTC element 5 and the element connection portion 6b are firmly connected. Next, as shown in FIG. 3D, the conductor 4 is sandwiched and crimped by the conductor connecting portion 6a of the connection terminal 6. In this way, as shown in FIG. 3E, a plurality of PTC elements 5 are connected at intervals in the longitudinal direction of the linear heating element 1 (for example, intervals of about 35 mm to 100 mm). Next, the conductor 4 and the PTC element 5 are covered by extrusion molding of an insulator 1c (covering material) made of a synthetic resin having flexibility. As the covering material, for example, a soft vinyl chloride resin having a maximum point elongation of 280% is used.

  As shown in FIGS. 4A to 4C, the heat transfer cover 2 is formed in a cylindrical shape having a rectangular cross-sectional shape. The heat transfer cover 2 has a bottom surface portion 2a that is a bottom surface side and an upper surface portion 2b that is an upper surface side when the heat transfer cover 2 is disposed on the roof top surface. Furthermore, the heat transfer cover 2 has protrusions 7 that protrude from both sides in a direction orthogonal to the longitudinal direction. The protrusion 7 is provided at a position closer to the upper surface side 2 b than the bottom surface side 2 a of the heat transfer cover 2. Further, a bent portion 7a bent in the direction of the upper surface 2b is formed at the end of the protrusion 7 in the short direction. Further, the projection 7 is provided with a plurality of through holes 9 at a predetermined interval in the longitudinal direction of the heat transfer cover 2. The through hole 9 is provided in the vicinity of the end of the protrusion 7. As the heat transfer cover 2 formed of a hollow heat transfer material, it is sufficient that the linear heating element 1 can be accommodated in a substantially straight shape, and a shape in which a cut portion is partially formed may be used. May be. The heat transfer material may be any material that can transfer the heat of the linear heating element 1, and for example, aluminum (A6062), stainless steel, iron, and the like can be used. Furthermore, it is more preferable that the heat transfer cover 2 is subjected to a surface treatment such as painting or plating because the design and durability are improved.

  As shown in FIGS. 5A to 5C, the ring member 3 is formed in an annular shape. The ring member 3 includes a shaft portion 3b and a semicircular portion 3c provided to be rotatable about the shaft portion 3b. The semicircular portions 3c are formed so as to be coupled to each other, and the fitting portion has an S-shaped fitting portion 3a. In addition, as the ring member 3, what is necessary is just the thing which can couple | bond together so that the heat-transfer covers 2 may not be separated apart over a fixed space, For example, what was formed with metals, such as aluminum, stainless steel, and iron, is preferable. Furthermore, it is more preferable that the ring member 3 is subjected to a surface treatment such as painting or plating because the design and durability are improved.

  Returning to FIG. 1, the snow melting device covers a plurality of portions, which form the meandering linear portion 11 of the linear heating element 1, with the heat transfer cover 2. The heat transfer covers 2 are arranged so as to be substantially parallel to each other at intervals. Adjacent heat transfer covers 2 arranged in parallel are coupled with each other through the ring member 3 through the through holes 9 at opposite positions. Thereby, the adjacent heat transfer covers 2 are configured to rotate and move while sliding along the ring member 3 at the position of the through hole 9. Further, the PTC element 5 is not disposed at the vertex 10 a of the meandering curved portion 10, but is disposed throughout the linear heating element 1 excluding the vertex 10 a of the curved portion 10.

  As described above, in the first embodiment of the present invention, the adjacent heat transfer covers 2 can be rotated and moved by sliding at the positions of the through holes 9 along the ring member 3. The snow melting device can be taken up compactly as shown in FIG. 6 by moving the heat transfer covers 2 arranged in parallel in this way.

  In addition, a ring member 3 is disposed between the heat transfer covers 2 with a space therebetween. Since the space between the ring member 3 and the ring member 3 is a space, a passage through which wind passes is provided. It is formed. When the passage for the wind to pass is formed in this way, even if the linear heating element 1 receives the wind, most of the linear heating element 1 passes through this passage, so that the linear heating element 1 receives less force from the wind. Therefore, it is possible to suppress the occurrence of hoisting due to wind.

  In addition, the PTC element 5 is arranged at a position excluding the vertex 10a where the burden increases due to the shape change of the curved portion 10 when the snow melting device is attached and removed. As a result, the curved portion 10 can be heated and the durability of the linear heating element 1 can be enhanced.

(Second Embodiment)
Next, a snow melting device according to a second embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 7A to 7C, linear heat generation in which an S-shaped ring 30 as a coupling member for connecting the heat transfer covers 2 is arranged in a meandering shape as in the first embodiment. They are arranged between the straight portions 11 of the body 1 and at intervals in the longitudinal direction of the straight portions 11.

  As shown in FIG. 7C, the S-shaped ring 30 includes a pair of ring portions 31 and 31 that are adjacent to each other in an S-shape. A pair of adjacent ring portions 31, 31 of the S-shaped ring 30 are individually passed through the adjacent through holes 9 between the heat transfer covers 2 as shown in FIGS. The heat covers 2 are joined together. When removing the snow melting device, the heat transfer cover 2 is slid at the position of the through hole 9 along the pair of ring portions 31 and 31 as shown in FIG. As shown in FIG. 8, the snow melting device can be compactly wound up by rotating the heat transfer covers 2 arranged in parallel in this way. The S-shaped ring 30 may be any one that can be coupled so that the heat transfer covers 2 are not separated from each other beyond a certain distance. For example, a ring formed of a metal such as aluminum, stainless steel, or iron is preferable. Furthermore, it is more preferable that the S-shaped ring 30 is subjected to a surface treatment such as painting or plating because the design and durability are improved.

(Third embodiment)
Next, a snow melting device according to a third embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 9A to 9C, a linear heating element in which an oval ring 40 as a coupling member for connecting the heat transfer covers 2 is arranged in a meandering shape as in the first embodiment. The first linear portions 11 are arranged at intervals in the longitudinal direction of the linear portions 11.

  As shown in FIG. 9C, the oval ring 40 is formed in an oval shape. As shown in FIGS. 9A and 9B, the oval ring 40 is passed through the adjacent through holes 9 between the heat transfer covers 2 to couple the heat transfer covers 2 to each other. When removing the snow melting device, the heat transfer covers 2 are slid at the position of the through hole 9 along the oval ring 40 as shown in FIG. The snow melting device can be folded compactly as shown in FIG. 10 by moving the heat transfer covers 2 arranged in parallel in this way. The oval ring 40 only needs to be capable of being coupled so that the heat transfer covers 2 are not separated from each other beyond a certain distance. For example, a ring formed of a metal such as aluminum, stainless steel, or iron is preferable. Furthermore, it is more preferable that the oval ring 40 is subjected to a surface treatment such as painting or plating because the design and durability are improved.

(Fourth embodiment)
Next, a snow melting device according to a fourth embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 11 (a), 11 (b), and 12, the hinge portion 50 as an expansion / contraction member for connecting the heat transfer covers 2 to each other is arranged in a meandering shape as in the first embodiment. It arrange | positions at intervals in the longitudinal direction of the linear part 11 between the linear parts 11 of the heat generating body 1. FIG.

  As shown in FIGS. 11 (a), 11 (b), and 12, the hinge portion 50 is composed of left and right blade plates 52, 52 and a rotating shaft 51 to which the left and right blade plates 52, 52 are coupled. ing. The left and right blades 52, 52 rotate around the rotation shaft 51, respectively. The hinge portion 50 has a rectangular shape when the left and right blades 52, 52 are opened, and through holes 53 for fixing the projections 7 of the heat transfer cover 2 are provided at every four corners of the rectangle. Adjacent heat transfer covers 2 and the hinge portion 50 are fixed by inserting screws into the through holes 53 and the through holes 9 of the protrusions 7. In addition, as the hinge part 50, what can be couple | bonded so that the heat-transfer covers 2 may not be separated exceeding a fixed space | interval, for example, what was formed with metals, such as aluminum, stainless steel, and iron, is preferable. Furthermore, it is more preferable that the hinge portion 50 is subjected to a surface treatment such as painting or plating because the design and durability are improved.

  As described above, in the fourth embodiment of the present invention, the heat transfer covers 2 arranged in parallel have a predetermined distance from each other with the left and right blades 52, 52 of the hinge portion 50 extending. Thereby, when arrange | positioning a snow melting apparatus on a roof upper surface, a predetermined space | interval can be taken between the linear part 11 and the linear part 11 of the linear heating element 1. FIG. Further, since the heat transfer covers 2 arranged in parallel are respectively fixed to the through holes 53 of the left and right blades 52, 52, the heat transfer covers 2 can be rotated around the rotation shaft 51 of the hinge portion 50. Thereby, when removing the snow melting device from the roof top surface, as shown in FIG. 13, the heat transfer cover 2 is sequentially bent while rotating around the rotation shaft 51 of the hinge portion 50, and the lines arranged in a meandering shape. The snow melting device can be made compact by reducing the width of the heat generating element 1 in the short direction. Moreover, the space | interval between the adjacent heat-transfer covers 2 can also be narrowed by bending the hinge part 50 in the position of the rotating shaft 51. FIG. Thereby, when removing a snow melting apparatus from a roof upper surface, a snow melting apparatus can be made compact by narrowing the space | interval between the linear part 11 and the linear part 11 of the linear heating element 1 meanderedly arranged. In addition, the hinge part 50 is fixed at intervals in the longitudinal direction of the heat transfer cover 2, and the space formed by this interval becomes an air passage and allows air to pass therethrough. The force received from the wind is reduced, and the occurrence of wind-up due to the wind can be suppressed.

(Fifth embodiment)
Next, a snow melting device according to a fifth embodiment of the present invention will be described with reference to FIGS.

  As shown in FIGS. 14 (a) and 14 (b), a linear heating element 1 in which link members 60 as elastic members for connecting the heat transfer covers 2 to each other are arranged in a meandering shape as in the first embodiment. The linear portions 11 are arranged at intervals in the longitudinal direction of the linear portions 11.

  The link member 60 is formed by joining two linear links 64 as shown in FIGS. The linear link 64 is formed in a shape extending linearly. The linear link 64 includes a cover-side connection portion 67 connected to the heat transfer cover 2, a link-side connection portion 65 for connecting the linear links 64, and a built-up portion 62.

  The cover side connecting portion 67 has a link side through hole 61 and is coupled to the link side through hole 61 and the through hole 9 of the projection 7 of the heat transfer cover 2 through a holding member such as a rivet or a screw. As a result, the cover side connecting portion 67 is held rotatably about the holding member of the through hole 9 of the protrusion 7. Further, the link side connection portion 65 is provided for coupling the two link members 60 and has a coupling through hole 66. The two linear links 64 are coupled to the coupling through hole 66 through a holding member 63 such as a rivet or a screw. As a result, the two linear links 64 are held rotatably about the holding member 63. The build-up portion 62 is provided so that the two linear links 64 do not overlap after rotating around the holding member 63. The link member 60 may be any link member that can be coupled so that the heat transfer covers 2 are not separated from each other beyond a certain distance. For example, a link member 60 formed of a metal such as aluminum, stainless steel, or iron is preferable. Furthermore, it is more preferable that the link member 60 is subjected to a surface treatment such as painting or plating because the design and durability are improved.

  As described above, in the fifth embodiment of the present invention, the heat transfer covers 2 arranged in parallel have a predetermined distance from each other with the link member 60 extended. Thereby, when arrange | positioning a snow melting apparatus on a roof upper surface, a predetermined space | interval can be taken between the linear part 11 and the linear part 11 of the linear heating element 1. FIG. Moreover, the heat transfer cover 2 arrange | positioned in parallel can narrow the space | interval between adjacent heat transfer covers 2 because the link member 60 will be in the state bent around the holding member 63. FIG. Thus, when removing the snow melting device from the roof top surface, the space between the straight portions 11 and 11 of the linear heating elements 1 arranged in a meandering manner is narrowed by the link member 60, thereby making the snow melting device compact. can do. In addition, since the hinge portion 50 is fixed at an interval in the longitudinal direction of the heat transfer cover 2, a space formed by the interval becomes an air passage and allows air to pass therethrough. The force received from the wind is reduced, and the occurrence of wind-up due to the wind can be suppressed.

  In addition, the snow melting apparatus which concerns on this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention. For example, as shown in FIGS. 16A to 16C, a configuration may be used in which adjacent heat transfer covers 2 are coupled to each other using a hinge plate 80 as a coupling member. Specifically, the heat transfer cover 2 has a plurality of protrusions 7 provided on both sides thereof at intervals in the longitudinal direction of the heat transfer cover. The protrusions 7 have through holes 7 b that pass through in the longitudinal direction of the heat transfer cover 2. In addition, the hinge plate 80 has left and right through holes 81 formed so as to be parallel to the longitudinal direction of the heat transfer cover 2 in a state where the hinge plates 80 are coupled to each other. Between the heat transfer covers 2, a hinge plate 80 is disposed between the protrusion 7 and the protrusion 7, and the fixing bolt 82 is passed through the through hole 7 b of the protrusion 7 and the through hole 81 of the hinge plate 80. The nut 83 is fixed and coupled. The hinge plate 80 only needs to be capable of being coupled so that the heat transfer covers 2 are not separated from each other beyond a certain distance. For example, the hinge plate 80 is preferably formed of a metal such as aluminum, stainless steel, or iron. Furthermore, it is more preferable that the hinge plate 80 is subjected to a surface treatment such as painting or plating because the design and durability are improved. With this configuration, the heat transfer cover 2 can be rotated about the fixing bolt 82 as an axis, and the heat transfer cover 2 arranged in parallel can be rotated and moved in order to wind the snow melting device or to melt snow. The device can be folded.

  Moreover, you may use a carbon short fiber as a heat source of the linear heating element 1. FIG.

  Further, the PTC element 5 may be arranged only in the straight portion of the linear heating element 1 arranged in a meandering manner.

It is a top view which shows the whole structure of the snow melting apparatus which concerns on 1st Embodiment of this invention. FIG. 2 shows the linear heating element of FIG. 1, (A) is a front view of the end of the linear heating element, (B) is a plan view of the end of the linear heating element, and (C) is the linear heating element power supply side. (D) is a cross-sectional view taken along the line AA of (B), and (E) is a plan view of the intermediate portion of the linear heating element. 2 shows the PTC heater shown in FIG. 2 (e), (a) is a plan view showing a state before connecting a terminal to the PTC element, and (b) is a plan view showing a state after the terminal is connected in (b). , (C) is a side view of (b), (d) is a front view showing a state before connecting the PTC element to the electric wire, and (e) is a plane showing the state after connecting the PTC element of (d) to the electric wire. FIG. FIG. 2 shows the heat transfer cover of FIG. 1, (A) is a plan view of the heat transfer cover, (B) is a side view of (A), and (C) is a front view of (A). FIG. 2 shows the ring member for connecting the heat transfer cover of FIG. 1, (A) is a side view of the ring member, (B) is a front view of (A), and (C) is a side surface that is a target position of (A). FIG. It is sectional drawing in the transversal direction of the heat-transfer cover of the state which wound up the snow melting apparatus of FIG. The whole structure which shows the snow melting apparatus which concerns on 2nd Embodiment of this invention is shown, (a) is sectional drawing in the transversal direction of the heat-transfer cover of a snow melting apparatus, (b) is a front view of (a), ( (C) is a front view which shows the S-shaped ring as a connection member used for a snow melting apparatus. It is sectional drawing in the transversal direction of the heat-transfer cover which shows the state which wound up the snow melting apparatus shown in FIG. It is a whole block diagram which shows the snow melting apparatus which concerns on 3rd Embodiment of this invention, Comprising: (a) is sectional drawing in the transversal direction of the heat-transfer cover of a snow melting apparatus, (b) is a front view of (a), ( (C) is a front view which shows the ellipse ring as a connection member used for a snow melting apparatus. It is sectional drawing in the transversal direction of the heat-transfer cover which shows the state which made the snow melting apparatus shown in FIG. 9 compact. It is a whole block diagram which shows the snow melting apparatus which concerns on 4th Embodiment of this invention, Comprising: (a) is sectional drawing in the transversal direction of the heat-transfer cover of a snow melting apparatus, (b) is a front view of (a). . It is the A section enlarged view of FIG. It is sectional drawing in the transversal direction of the heat-transfer cover which shows the state which wound up the snow melting apparatus shown in FIG. It is a whole block diagram which shows the snow melting apparatus which concerns on 5th Embodiment of this invention, Comprising: (a) is sectional drawing in the transversal direction of the heat-transfer cover of a snow melting apparatus, (b) is a front view of (a). . FIG. 15 shows link members used in the snow melting device shown in FIG. 14, (A) is a plan view of the link member, (B) is a front view of (A), and (C) is a bending of the link member of (A). It is a top view which shows the state. The hinge board in the other form of this invention is shown, (A) is a top view of a hinge board, (B) is a front view of a hinge board, (C) is the outline which shows the state which has arrange | positioned the hinge board in the snow melting apparatus. It is a front view. It is a perspective view of the snow melting apparatus of a prior art. It is a front view of the snow melting apparatus of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Linear heating element, 1a ... Terminal sealing, 1b ... Recessed part, 1c ... Insulator, 2 ... Heat transfer cover, 2a ... Bottom surface part, 2b ... Upper surface part, 3 ... Ring member, 3a ... Fitting part, 3b ... Shaft part, 3c ... Semicircular part, 4 ... Conductor, 5 ... PTC element, 6 ... Connection terminal, 6a ... Conductor connection part, 6b ... Element connection part, 7 ... Projection, 7a ... Bending part, 7b ... Through hole, DESCRIPTION OF SYMBOLS 8 ... Power cord, 8a ... Connection part, 9 ... Through-hole, 10 ... Curved part, 10a ... Vertex, 11 ... Straight part, 30 ... S-shaped ring, 31 ... Ring part, 40 ... Ellipse ring, 50 ... Hinge 51: Rotating shaft 52 ... Blade plate 53 ... Through hole 60 ... Link member 61 ... Link side through hole 62 ... Overlaying part 63 ... Holding member 64 ... Linear link 65 ... Link side Connection part, 66 ... coupling through hole, 67 ... cover side connection part, 80 ... hinge plate, 81 ... through hole, 82 ... fixing bolt Doo, 83 ... nut

Claims (5)

A flexible linear heating element and a plurality of heat transfer covers formed of a hollow heat transfer material, and the linear heating element includes a plurality of linear portions arranged in parallel at a predetermined interval; It is arranged in a meandering shape with curved portions curved so as to connect the ends of the straight portions, and the snow cover on the roof top surface is melted, and the heat transfer cover has a longitudinal direction of each of the plurality of straight portions. In covering snow melting equipment,
Adjacent heat transfer covers are provided with a connecting member that is connected so that they are not separated beyond a certain distance, and a plurality of connecting members are provided between the adjacent heat transfer covers at intervals in the longitudinal direction of the heat transfer cover. The snow cover is characterized in that the heat cover is connected to the coupling member so as to be rotatable about the longitudinal axis of the heat transfer cover. A flexible linear heating element and a plurality of heat transfer covers formed of a hollow heat transfer material, and the linear heating element includes a plurality of linear portions arranged in parallel at a predetermined interval; It is arranged in a meandering shape with curved portions curved so as to connect the ends of the straight portions, and the snow cover on the roof top surface is melted, and the heat transfer cover has a longitudinal direction of each of the plurality of straight portions. In covering snow melting equipment,
An expansion / contraction member is provided between adjacent heat transfer covers with an interval in the longitudinal direction of the heat transfer cover, and the expansion / contraction member narrows the interval between the heat transfer covers by being bent. A snow melting device characterized in that the space between the heat transfer covers is widened by being extended together. The snow melting device according to claim 1, wherein the linear heating element includes a PTC element as a heat source. 4. The snow melting device according to claim 3, wherein the PTC element is provided only in a range of a linear portion of the linear heating element. 4. The snow melting device according to claim 3, wherein the PTC elements are provided in a range of the linear portion of the linear heating element and a range excluding the apex of the range of the curved portion.

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