JP2021111517A - Heating structure - Google Patents

Abstract

To provide a heating structure capable of utilizing the heat of a heating element at a high energy efficiency.SOLUTION: A heating structure is configured by sandwiching a heat generating sheet 1A, etc. generating heat when energized, between an upper surface body 5 constituting a front surface member, and a lower surface plate 8, an aluminum sheet 6 and a heat insulation sheet 7, the aluminum sheet and the heat insulating sheet constituting a back surface member. In the heating structure, the aluminum sheet 6 and the heat insulation sheet 7, which are materials to dissipate heat radiated from the heat generating sheet 1A, etc. only to the upper surface body 5, are used as the back surface member.SELECTED DRAWING: Figure 3

Description

The present invention relates to a heat generating structure including a planar heat generating body that generates heat when energized and gives heat to an object.

In cold seasons and cold regions, ice and snow may adhere to the roofs of buildings, traffic lights installed outdoors, and signs. In response to such a situation, as a safety measure, by installing a planar heating element that generates heat when energized on the roofs of these buildings, traffic lights, signs, etc. installed outdoors, it is possible to prevent the adhesion of ice and snow. The technology to melt snow is known. For example, Patent Document 1 is a heating element installed on the back side of a signal, and this heating element uses an insulating film as a base material, and a plurality of strip-shaped heat generating functional materials in the width direction on the insulating film at regular intervals. Is attached, electrodes are connected to both ends of these heat generating functional materials, and an insulating film similar to the base material is laminated on these heat generating functional materials and electrodes to form a sheet. When the heating element is energized, heat is radiated from the front surface and the back surface, and the radiated heat is transferred to the traffic light from the back side to prevent ice and snow from adhering to the light emitting part of the traffic light. By arranging such a heating element under the floor material of a house, it can be diverted to floor heating or the like.

Japanese Unexamined Patent Publication No. 2005-11217 (Page 4, Fig. 3)

In Patent Document 1, the heating element is installed on the back side of the signal, but the heating element itself radiates heat from the front surface and the back surface when energized, and either the front surface or the back surface facing the back side of the signal device. There is a problem that only the heat radiated from the signal is transferred to the signal, and the heat radiated from the other side of the front surface and the back surface cannot be used to heat the signal, resulting in inferior energy efficiency.

The present invention has been made focusing on such a problem, and an object of the present invention is to provide a heating structure capable of utilizing the heat of a heating element with high energy efficiency.

In order to solve the above problems, the heat generating structure of the present invention is used.
It is configured by sandwiching a planar heating element that generates heat when energized between a plate-shaped front surface member and a back surface member.
The back surface member is characterized by using a material that radiates heat radiated from the heating element only to the front surface member side.
According to this feature, the heat radiated from the front surface and the back surface of the heating element is radiated only to the surface member side, so that the heat of the heating element can be utilized with high energy efficiency.

The front surface member and the back surface member are characterized in that their outer edge portions are hermetically sealed over the entire circumference.
According to this feature, by sealing the outer edges of the front surface member and the back surface member over the entire circumference, the heating structure is configured as a heating panel, and water and dust can enter the space containing the heating element. To prevent this, the heat generating panel can be directly installed and used even outdoors.

The wiring for supplying power to the heating element is inserted into a hole formed in the back surface member or the side surface portion.
According to this feature, the wiring is drawn out to the back surface member side or the side surface side of the material that radiates the heat radiated from the heating element only to the front surface member side, so that the wiring is not easily affected by the heat of the heating element and is damaged. Can be prevented.

The back surface member is characterized in that it is composed of at least a planar body made of synthetic resin, metal or paper, and a heat shield sheet arranged between the planar body and the heating element. There is.
According to this feature, the heat radiated from the back surface side of the heating element by the heat shield sheet is reflected to the front surface side and collected on the surface member side together with the heat radiated to the front surface side of the heating element, resulting in high energy efficiency. The heat of the heating element can be utilized in.

The back surface member is characterized in that it is composed of the planar body, the heat shield sheet, and a heat insulating material.
According to this feature, the heat insulating material can insulate the outside air temperature from the back surface side, and the high energy efficiency of the heating element can be maintained.

A plurality of the heating elements are arranged side by side between the pair of the front surface members and the back surface members.
According to this feature, heat radiated from a plurality of heating elements can be dispersed in a space between a pair of front surface members and a back surface member, and heat can be uniformly radiated from the surface of the front surface member.

It is characterized by including a detection unit interposed between the front surface member and the back surface member to detect the temperature of the heating element, and wiring extending from the detection unit to the outside of the heating element. It is supposed to be.
According to this feature, since the heating structure can derive the temperature information of the heating element inside the structure to the outside, it is possible to perform control based on the temperature of the heating element.

It is an overall view which shows the mode in which the heat generating structure in Example 1 of this invention is installed on a canopy roof. It is a perspective view which shows the aspect which arranged the heat generating structure in Example 1. FIG. It is an exploded perspective view of the heat generating structure in Example 1. FIG. It is a schematic diagram which shows the wiring mode in the heat generation structure in Example 1. FIG. It is a schematic diagram which shows the wiring mode of the control panel in Example 1. FIG. It is a timing chart which shows energization and de-energization to a power generation sheet. It is an exploded perspective view of the heat generating structure in Example 2. FIG. It is an exploded perspective view of the heat generating structure in a modification.

A mode for carrying out the heat generating structure according to the present invention will be described below based on examples.

The heat generating structure according to the first embodiment will be described with reference to FIGS. 1 to 6. In this embodiment, the left back side and the right front side of the paper surface in FIG. 3 will be described as the left-right direction, the left front side and the right back side of the paper surface will be described as the front-rear direction, and the paper surface vertical direction will be described as the vertical direction.

As shown in FIG. 1, the roof of a gas station or the like is often constructed with a structure called a canopy roof in which a top plate is arranged substantially horizontally. In such a canopy roof A, a load is applied to the upper surface of the canopy roof A due to heavy snowfall in a heavy snowfall area, and in an extreme case, the support column T that cannot support the load may be bent, or the canopy roof A itself may be damaged or collapsed. There is. Therefore, the bases 3, ... Are fixedly arranged on the upper surface of the canopy roof A at equal intervals, the rails 2 are laid on the upper surface of the bases 3, ..., And a plurality of snowmelt panels 4 as a heat generating structure are arranged side by side. However, by generating heat on the upper surface of the snowmelt panel 4, it is possible to melt snow without complicated manual work such as snowfall work on the upper surface of the canopy roof A.

As shown in FIG. 2, the snowmelt panel 4 is a plate-shaped panel formed into a substantially rectangular shape in a top view, and a plurality of the snowmelt panels 4 are arranged vertically and horizontally in an orderly manner. Further, the snowmelt panel 4 is supported by the rail 2 at a position where the rear side of the back surface is slightly higher than the front side, and is installed so as to be inclined in the same direction and at the same angle with respect to the upper surface of the horizontally formed canopy roof A. Has been done. For this reason, the water melting generated on the upper surface of the snow melting panel 4 due to the snow melting can be smoothly moved downward. The snowmelt panel 4 can be arranged by using a base and rails used when installing a solar panel.

Next, the structure of the snowmelt panel 4 will be described. As shown in FIG. 3, the snow melting panel 4 is formed from a metal material such as aluminum or stainless steel in order from the upper part to the lower part in the top view, and the lower surface is open. A member), a plurality of heat generating sheets 1A to 1D (4 sheets in this embodiment) to which a tape-shaped heating element, which will be described later, is attached, and a heat insulating sheet formed into a sheet shape containing aluminum as a main component. 6 and a heat insulating sheet 7 (heat insulating material) obtained by molding a foam material such as glass wool or styrofoam into a sheet, and a metal such as stainless steel or aluminum that can be fitted flush with the lower surface of the above-mentioned upper surface body 5. It is mainly composed of a bottom plate 8 (plane body) formed from a material. Further, the heat shield sheet 6, the heat insulating sheet 7, and the lower surface plate 8 constitute the back surface member of the present invention. The upper surface body 5 is not necessarily limited to the one formed in a box shape as in the present embodiment, but may be formed in a plate shape. Further, the bottom plate 8 is not necessarily limited to the one molded from a metal material as in this embodiment, and may be molded from a synthetic resin such as polycarbonate or epoxy, or a paper such as a waterproof sheet. Further, although not particularly shown, the upper and lower heat generating sheets 1A to 1D are sandwiched between a pair of waterproof sheets made of, for example, silicon, and the peripheral edges of these sheets are heat-welded over the entire circumference. The heat-generating sheets 1A to 1D can be made completely waterproof by doing so. The four heat generating sheets 1A to 1D are arranged vertically and horizontally so as not to overlap each other in a plan view. In this embodiment, four heat generating sheets 1A to 1D are arranged vertically and horizontally inside the snowmelt panel 4, but the present invention is not limited to this, and for example, only one or a plurality of heat generating sheets are arranged side by side in appropriate directions. May be done.

Since the plurality of heat generating sheets 1A to 1D have the same structure, only the heat generating sheet 1A will be described below, and other description will be omitted. As shown in FIG. 4, the heating sheet 1A is formed into a tape by kneading and rolling a plurality of semiconductor substances and an oxidizing compound on a polyimide film 1b formed in a sheet shape and processing it with Teflon (registered trademark). A plurality of molded heating elements 1a are attached in substantially parallel with each other by providing separation regions S at regular intervals in the width direction. Each heating element 1a is formed in a tape shape (strip shape) having a constant width and extending in the longitudinal direction. Not limited to this embodiment, the heating element 1a may be formed in a tape shape (strip shape) extending in the lateral direction with a predetermined width, or may be formed in a narrow strip shape, that is, in a substantially linear shape. May be good. Further, by coating the polyimide film 1d having the same shape as the polyimide film 1b from above, the heating elements 1a, ... Are sandwiched, and the heating elements 1a, ... Are formed in a substantially planar shape by vacuum sealing or press sealing. Not limited to this embodiment, the heating sheet 1A may be formed in a tape shape (strip shape) along the heating element 1a, or may be formed in a narrow strip shape, that is, in a substantially linear shape. Further, electrodes made of silver wax are connected to both ends of each heating element 1a, and AC power is supplied via a cord 1c connected to these electrodes and extending from one end of the heating sheet 1A. The temperature of each heating element 1a rises, causing the heating sheet 1A to generate heat. Further, although not particularly shown, a detection unit including a thermistor or a thermoelectric body for detecting the heat generation temperature of the heating element 1a is provided at an appropriate position on the heating element 1a or the heating sheet 1A, and is electrically connected to the detection unit. The wiring penetrates the polyimide films 1b and 1d and extends to the outside of the snow melting panel 4. By doing so, the temperature information of the heating element 1a inside the snowmelt panel 4 can be derived to the outside, so that control based on the heating temperature of the heating element 1a can be performed.

The heating elements 1a, ... Of the heating sheets 1A to 1D are heated by converting electric energy into heat energy by energization, and heat is dissipated from both the upper and lower surfaces of the heating sheets 1A to 1D. As shown in FIG. 3, since the heat shield sheet 6 is arranged on the lower side of the heat generating sheets 1A to 1D, the heat radiated to the lower side of the heat generating sheets 1A to 1D is generated by the heat shield sheet 6. Heat is transferred over the entire surface, and a part of the heat energy is reflected upward by the surface portion 6a of the heat shield sheet 6. The reflected heat is dissipated toward the upper upper surface body 5 side through the separation region S formed between the heating elements 1a, ... Of the heating sheets 1A to 1D.

Further, the heat conducted to the back surface portion 6b of the heat shield sheet 6 is effectively insulated by the heat insulating sheet 7 arranged below the heat shield sheet 6. A slight gap may be formed between the heat generating sheets 1A to 1D and the heat shield sheet 6 by interposing a short spacer (not shown). By doing so, the heat generating sheets 1A to 1A to Most of the heat conducted from the lower surface of 1D through the voids is reflected by the surface portion 6a of the heat shield sheet 6, and is upward through the separation region S between the heating elements 1a, ... Of the heating sheets 1A to 1D. Since heat is dissipated toward the upper surface body 5 side, the thermal efficiency for heating the upper surface body 5 can be further improved. Here, the width dimension of the separation region S between the heating elements 1a is preferably smaller than the width dimension of the heating element 1a itself, and by doing so, the heat generation efficiency from the heating element 1a itself is not hindered. By using the separation region S narrower than the heating element 1a, heat from below can be dissipated toward the upper surface body 5. Not limited to the above-described embodiment, the width dimension of the separation area S between the heating elements 1a may be larger than the width dimension of the heating element 1a itself. Energy saving can be achieved by minimizing the installation area.

When molding the snowmelt panel 4, the heat-generating sheets 1A to 1D, the heat-shielding sheet 6, and the heat-insulating sheet 7 are arranged in the internal space of the upper surface body 5 so as to be overlapped with each other in the vertical direction. The bottom plate 8 and the bottom plate 8 are sealed on all four sides via an endless packing (not shown), and fixed by pressing with a strong adhesive or using screws, screws, or the like. Further, the cords 1c, ... Extending from the heat generating sheets 1A to 1D are extended to the outside of the snowmelt panel 4 from the through holes 8a formed at the end of the lower surface plate 8, and are extended via the control panel 9. The AC current is supplied from the power supply P. It should be noted that the upper surface body 5 is not necessarily limited to the one in which the through hole 8a is formed in the lower surface plate 8 as in the present embodiment, and for example, the upper surface body 5 in which the through hole for extending the cords 1c, ... Is formed in a box shape. It may be formed on the side surface portion of the. Furthermore, the lower surface plate is provided in a box shape to form a side surface portion, or the upper surface body and the peripheral edge of the lower surface plate are provided with a frame-shaped side surface member to form a through hole in the side surface portion of the lower surface plate or the side surface member. You may.

FIG. 5 is a schematic view showing the internal structure of the control panel 9, which mainly includes a control system terminal block 9a connected to a plurality of cords 1c extending from the heat generating sheet 1 and a breaker. The power supply system terminal block 9b connected to 9d, the control system terminal block 9a, the power supply system terminal block 9b, and the sequencer 9c connected to the breaker 9d are arranged inside the housing to control. The panel 9 is supplied with an alternating current from the outside by the power supply P of the industrial power supply AC200V.

When electricity is supplied from the power supply P to the control panel 9, the sequencer 9c controls energization of the heat generating sheets 1A to 1D connected to the control system terminal block 9a. In the control mode, it is mainly composed of an initial operation and a main operation. The mode of operation controlled by the sequencer 9c will be described below.

As shown in FIG. 6, first, immediately after the power is supplied, the initial operation is selected by the sequencer 9c, the initial operation time M (for example, 10 minutes) preset by the operator, and the heat generating sheets 1A to 1D. All are continuously energized and constantly generate heat during this initial operation time. For example, a setting unit such as a button capable of setting an initial operation time of 10 minutes, 20 minutes, or 30 minutes may be provided on the front surface or inside of the control panel 9.

Next, after the heat generating sheets 1A to 1D are energized during the above-mentioned initial operation time, the main operation is selected by the sequencer 9c. This operation is an operation in which the heating sheets 1A to 1D are sequentially repeated in the energized state and the non-energized state. In this embodiment, the heating sheets 1A, 1B, 1C and 1D are energized in this order for 0.5 seconds as the energizing time. It is a thing. That is, each heat generating sheet is set to repeat the next energized state and further the non-energized state after a 1.5 second non-energized time in which the other heat generating sheet is energized after the energized state for 0.5 seconds. ing. From this, when the main operation is started, each heat generating sheet is energized only for 0.5 seconds out of 2 seconds, so that the snowmelt panel 4 is operated with less power consumption than in the initial operation. Can be done.

Further, since the sequencer 9c is connected to the power supply system terminal block 9b and the breaker 9d, ..., When an electric leakage or excessive heat generation is detected, or an abnormality such as an earthquake or a fire is detected, the breaker 9d, ... Is activated. , It is possible to stop the supply of electricity.

The energization time and non-energization time of the main operation described above are examples, and the energization time and non-energization time can be freely changed by the operator operating the sequencer 9c. Further, although it has been described that the heat generating sheets 1A to 1D arranged in one snowmelt panel 4 are energized and deenergized, the present invention is not limited to this, and for example, a canopy in which a plurality of snowmelt panels 4 are arranged in parallel. In the ceiling A, the left row side and the right row side may be grouped in the control panel 9 and the energization and de-energization may be repeated for each of the main operations.

As described above, according to the snow melting panel 4 of the present embodiment, heat is generated by energization between the upper surface body 5 constituting the front surface member and the heat shield sheet 6 and the lower surface plate 8 constituting the back surface member. Since the heat shield sheet 6 which is formed by sandwiching the heat generating sheet 1A or the like and is a material that radiates the heat radiated from the heat generating sheet 1A or the like only to the upper surface body 5 is used as the back surface member, the surface of the heat generating sheet 1A or the like is used. Since the heat radiated from the upper surface body 5 side is dissipated only to the upper surface body 5, the heat of the heat generating sheet 1A or the like can be utilized with high energy efficiency.

Further, since the back surface member is composed of the heat shield sheet 6, the lower surface plate 8, and the heat insulating sheet 6, the heat shield sheet 6 can insulate the outside air temperature from the lower surface plate 8 side, and the heating element 1a High energy efficiency can be maintained.

Further, by sealing the outer edges of the upper surface body 5 and the lower surface plate 8 over the entire circumference via packing, a heat generating sheet 1A or the like is formed inside the snowmelt panel 4, and a space in which the heat generating sheet 1A or the like is contained. The snowmelt panel 4 can be directly installed and used outdoors by preventing water and dust from entering the space.

Further, since the cord 1c for supplying power to the heat generating sheet 1A or the like is inserted through the through hole 8a formed in the lower surface plate 8, the heat radiated from the heat generating sheet 1A or the like is radiated only to the upper surface body 5. Since the wiring is pulled out to the lower surface plate 8 side of the material, the cord 1c is less likely to be affected by the heat of the heat generating sheet 1A and the like, and damage can be prevented.

Further, since a plurality of heating sheets 1A to 1D are arranged side by side as heating elements between the upper surface body 5 as a pair of front surface members and the lower surface plate 8 as a back surface member, the pair of upper surface bodies 5 The heat radiated from the plurality of heat generating sheets 1A to 1D can be dispersed in the space between the lower surface plate 8 and the heat can be uniformly radiated from the surface of the upper surface body 5.

Next, Example 2 of the heat generating structure according to the present invention will be described with reference to FIG. 7. The same components as those shown in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

FIG. 7 is an exploded perspective view of the floor heating panel 14 constituting the floor heating device as the heat generating structure in the second embodiment, and mainly, wood is formed into a thick substantially rectangular shape as a surface member. It is composed of a decorative plate 15, heat-generating sheets 11A and 11B, a heat-shielding sheet 6 as a back surface member, and a urethane sheet 17 obtained by molding a foam-based material such as urethane into a thick rectangular shape.

The floor heating device is mainly used for a living room or a bedroom in a general house, or a floor surface in an educational facility, a commercial facility, or the like, and a plurality of floor heating panels 14 are arranged according to the size of the target floor surface. It consists of setting. When the heat generating sheets 11A and 11B generate heat by energization, heat is conducted to the lower surface 15b of the decorative plate 15 arranged above, and the upper surface 15a of the decorative plate 15 is warmed to a temperature suitable for the floor surface. It has become.

A cord 11c extends from the heat generating sheets 11A and 11B, and is connected to a control panel (not shown) by inserting a through hole 17a formed in the urethane sheet 17. Similar to the snowmelt panel 4 of the first embodiment described above, the floor warming panel 14 can also be set to be in the main operation after the initial operation, and the detailed temperature can be set.

The heat generating sheets constituting the floor warming panel 14 have been described as two sheets of 11A and 11B, but the present invention is not limited to this, and four sheets may be used as in the first embodiment, or one sheet formed in a large format may be used as a makeup sheet. It may be sandwiched between the plate 15, the heat shield sheet 6 and the urethane sheet 17.

As described above, according to the floor warming panel 14 of the present embodiment, heat is generated by energization between the decorative plate 15 constituting the front surface member and the heat shield sheet 6 and the urethane sheet 17 constituting the back surface member. Since the heat-shielding sheet 6 and the urethane sheet 17, which are formed by sandwiching the heat-generating sheet 11A and the like and are materials that radiate the heat radiated from the heat-generating sheet 11A and the like only to the decorative plate 15, are used as the back surface member. Since the heat radiated from the front surface and the back surface of the sheet 11A or the like is radiated only to the decorative plate 15 side, the heat of the heat generating sheet 11A or the like can be utilized with high energy efficiency.

Further, since the cord 11c for supplying power to the heat generating sheet 11A or the like is inserted into the through hole 17a formed in the urethane sheet 17, the heat radiated from the heat generating sheet 11A or the like is radiated only to the decorative plate 15 side. Since the wiring is pulled out to the urethane sheet 17 side of the material, the cord 11c is not easily affected by the heat of the heat generating sheet 11A, and damage can be prevented.

Further, since a plurality of heat generating sheets 11A and 11B are arranged side by side as heating elements between the decorative plate 15 as the pair of front surface members and the urethane sheet 17 as the back surface member, the pair of decorative plates 15 and the decorative plate 15 are arranged side by side. The heat radiated from the plurality of heat generating sheets 11A and 11B can be dispersed in the space between the urethane sheet 17 and the heat can be uniformly radiated from the surface of the decorative plate 15.

(Modification example)
Next, a modified example of the heat generating structure according to the present invention will be described with reference to FIG. The same components as those shown in Examples 1 and 2 are designated by the same reference numerals, and duplicate description will be omitted.

FIG. 8 is an exploded perspective view of the heat generating panel 24 as the heat generating structure in the modified example, and mainly includes a resin plate 25A in which resin is formed into a thick substantially rectangular shape as a surface member, and a heat generating sheet 11A. , 11B, as a back surface member, a heat insulating sheet 7 obtained by molding a foam material into a sheet shape, and a resin plate 25B having the same shape as the resin plate 25A. The heat-generating resin plate 24 is formed by sandwiching the heat-generating sheets 11A and 11B and the heat-insulating sheet 7 by the resin plates 25A and 25B, and heat-welding the outer edge portions Y of the resin plates 25A and 25B to each other. The resin plate 25B is formed with through holes 25a through which the cords 11c and 11c can be inserted, and the cords 11c and 11c extend from the through holes 25a to the outside of the heat generating resin plate 24 and are not shown. Electricity is supplied from the power supply via the panel. The heat generating panel 24 can be applied as a panel for snow melting or floor warming described above, and like the snow melting panel 4 and the floor warming panel 14 of the embodiment, the heat generating panel 24 can be set to the main operation after the initial operation, and details. It is possible to set various temperatures.

The resin plates 25A and 25B are made of highly heat-resistant polyphenylene sulfide, Teflon (registered trademark), or the like. Further, the heat resistance may be improved by mixing glass fiber at the time of molding.

Since both sides of the heat generating panel 24 are welded and sealed by resin plates 25A and 25B, packing or the like is not required and the heat generating panel 24 is resistant to humidity, and the resin plates 25A and 25B soften the impact from the outside. , It can be used as a heating device by interposing it in the wall material.

As described above, according to the heat generating panel 24 of this modified example, heat is generated by energization between the resin plate 25A constituting the front surface member and the heat insulating sheet 7 and the resin plate 25B constituting the back surface member. Since the heat insulating sheet 7 and the resin plate 25B, which are formed by sandwiching the sheet 11A and the like and are materials that dissipate the heat radiated from the heat generating sheet 11A and the like only to the resin plate 25A, are used as the back surface member. Since the heat radiated from the front surface and the back surface is radiated only to the resin plate 25A side, the heat of the heat generating sheet 11A or the like can be utilized with high energy efficiency.

Further, by heat-welding and sealing the outer edges of the resin plate 25A and the resin plate 25B, the heat-generating sheet 11A and the like are formed inside the heat-generating panel 24, and water and dust in the space containing the heat-generating sheet 11A and the like are formed. The heat generating panel 24 can be directly installed and used even outdoors by preventing the intrusion of the heat generating panel 24.

Further, since the cord 11c for supplying power to the heat generating sheet 11A or the like is inserted into the through hole 25a formed in the resin plate 25B, the heat radiated from the heat generating sheet 11A or the like is radiated only to the resin plate 25A side. Since the wiring is pulled out to the heat insulating sheet 7 and the resin plate 25B side of the material, the cord 11c is not easily affected by the heat of the heat generating sheet 11A and the like, and damage can be prevented.

The back surface member is composed of a resin plate 25B as a plate material made of synthetic resin, and a heat insulating sheet 7 as a heat shield sheet arranged between the resin plate 25B and the heat generating sheets 11A and 11B as a heating element. Therefore, the heat radiated from the back surface side of the heat generating sheets 11A and 11B by the heat insulating sheet 7 is reflected to the front surface side, and together with the heat radiated to the front surface side of the heat generating sheets 11A and 11B, the resin plate 25A side as the surface member The heat of the heat generating sheets 11A and 11B can be utilized with high energy efficiency.

Further, since a plurality of heating sheets 1A to 1D are arranged side by side as heating elements between the upper surface body 5 as a pair of front surface members and the lower surface plate 8 as a back surface member, the pair of upper surface bodies 5 The heat radiated from the plurality of heat generating sheets 1A to 1D can be dispersed in the space between the lower surface plate 8 and the heat can be uniformly radiated from the surface of the upper surface body 5.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these Examples 1 and 2 and the modified examples, and there are changes and additions within a range that does not deviate from the gist of the present invention. Even included in the present invention.

For example, in the above embodiment, the control panel 9 is supplied with electricity from the power source P of the industrial power supply AC200V from the outside, but the present invention is not limited to this, and AC100V may be used, and the snowmelt panel and the solar panel may be used. It is also possible to use the stored electricity.

1A ~ 1D Heating sheet 1a Heating element 2 Rail 3 Base 4 Snow melting panel (heating structure)
5 Upper surface body (surface member)
6 Heat shield sheet (back surface member)
7 Insulation sheet (back surface member, insulation material)
8 Bottom plate (back surface member, planar body)
8a Through hole 9 Control panel 9c Sequencer 11A, 11B Heat generation sheet 14 Floor warming panel (heat generation structure)
15 Decorative board (surface member)
17 Urethane sheet (back surface member)
24 Heat generation panel (heat generation structure)
25A resin plate (surface member)
25B resin plate (back surface member)

Claims (7)

It is configured by sandwiching a planar heating element that generates heat when energized between a plate-shaped front surface member and a back surface member.
A heat generating structure characterized in that a material is used for the back surface member to dissipate heat radiated from the heating element only to the front surface member side. The heat-generating structure according to claim 1, wherein the front surface member and the back surface member are hermetically sealed with their outer edge portions all around the circumference. The heating structure according to claim 1 or 2, wherein the wiring for supplying power to the heating element is inserted into a hole formed in the back surface member or the side surface portion. The back surface member is characterized in that it is composed of at least a planar body made of synthetic resin, metal or paper, and a heat shield sheet arranged between the planar body and the heating element. The heating element according to any one of claims 1 to 3. The heat generating structure according to claim 4, wherein the back surface member is composed of the planar body, the heat shield sheet, and a heat insulating material. The heat generating structure according to any one of claims 1 to 5, wherein a plurality of the heating elements are arranged side by side between the pair of the front surface members and the back surface member. It is characterized by including a detection unit interposed between the front surface member and the back surface member to detect the temperature of the heating element, and wiring extending from the detection unit to the outside of the heating structure. The heating element according to any one of claims 1 to 6.

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