JPH1183057A - Indoor face heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a far infrared face heater which is low in maintenance and running cost and is desirable for human body and a living body. SOLUTION: In a heater which has built a heater 3 for heating within a wall face constituting an indoor face or within a floor face, a radiator 1 consisting of plate-shaped serpentine of heat-resistant stone material excellent in heat retaining property, heat accumulating property, and far infrared ray radiation property is attached along the indoor face, and a heater 3 for heating the radiator is set to the inside or rear side of the radiator 1. A recessed storage for heater insertion is made on the rear side of the radiator 1, and the heater 3 is inserted and fixed within the storage. There is such a case that the radiator 1 is stored in the recess of a straw matting 16, or that it is set to the body of a pet house as the floor material for the pet house.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor surface heating apparatus applied to a building, a pet house and the like.

[0002]

2. Description of the Related Art As a conventional indoor surface heating device, pipes are provided in the wall and floor of a room to circulate steam or hot water, or a heater is provided in a plane in these surfaces. For example, a method of attaching to a vehicle is known.

However, when steam uses hot water, piping costs and equipment operation and maintenance costs are high.
In addition, a heater provided with a planar heater is also heated only when the heater is energized, and has a shortcoming that the remaining heat time is short, so that operating costs such as electricity costs are high.

[0004]

According to the present invention, there is provided a heating apparatus in which a heater 3 for heating is built in a wall surface or a floor surface constituting an indoor surface. In the above, a plate-shaped radiator 1 made of a heat-resistant stone material excellent in heat retention, heat storage and far-infrared radiation is attached along the indoor surface, and the radiator is heated inside or on the back side of the radiator 1. It is characterized in that the heater 3 is mounted.

Second, the radiator 1 is made of serpentine.

A third feature is that a concave housing portion 2 for inserting a heater is formed on the back surface side of the radiator 1, and a heater 3 is inserted and fixed in the housing portion 2.

Fourth, the radiator 1 is accommodated in the cross section of the tatami mat 16, and the tatami mat 16 is laid in a room.

Fifth, the radiator 1 is characterized in that the radiator 1 is assembled to the pet house 21 as a floor material for the pet house.

Sixth, the heater 3 is a rod-shaped heater,
A housing 2 for housing the rod-shaped heater 3 is formed in the cross section of the radiator, and the heater 3 is inserted and fixed in the housing 2.

Seventh, the ventilation window 2 is provided on the peripheral wall of the pet house 21.
9, and a heat insulating sheet 32 which rises and lowers along the peripheral wall and closes and opens the ventilation window 29 is provided.

Eighthly, a groove-shaped housing portion is formed in the cross section of the radiator 1, and a cooling material is housed in the housing portion.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail. First, a radiator that radiates far-infrared rays with a heating medium used in the present invention and a combination with a heater that heats the radiator are described in advance. explain.

As the radiator, natural or artificial stone or ceramic (hereinafter referred to as "stone") is used, and a material excellent in heat radiation, heat storage (heat insulation) and far-infrared radiation characteristics is desirable. In this example, a serpentine stone quarried from serpentine is used, and in particular, a noble serpentine is used. As shown in FIG. 8, this noble serpentine has a far-infrared emissivity at 40.9 ° C. of 95% or more on average, and has a wavelength of 2 to 14π, which is almost the same as the wavelength of the human body. The effect on the living body of pets is also very favorable.

Table 1 shows the identification results of the compounds contained in the noble serpentine used in this example by X-ray diffraction. Incidentally, in this diffraction, heavy elements such as Zr have high sensitivity, but light elements such as Na have low sensitivity, and the lower detection limit differs depending on the element. If the emissivity of far-infrared rays and cost conditions are met, other artificial or natural stone or ceramic materials can be used as the radiator.

[0015]

[Table 1]

The radiator using the above-mentioned stone material is formed in a plate shape as described later, and a plate-like or linear heater is fixed inside the radiator by burying or inserting, and heated by the heater. In this way, far infrared rays are emitted from the radiator.

FIGS. 1 and 2 show the structure of a radiator 1 used in the apparatus of the present invention. Formed as a plate.

At a substantially central portion of the radiator 1, a concave portion 2 for inserting a heater having a predetermined size and depth is formed from the rear side, and a heater 3 which generates heat by energization is inserted into the concave portion 2. In addition, a heat-resistant cover 4 made of a heat-resistant member conforming to the shape of the concave portion 2 is provided on the bottom side of the heater 3.
The heater 3 is detachably attached by a screw or an adhesive or the like, and the heater 3 is held in the recess 2 by a radiator 1 and a heat-resistant cover 4 in a sandwich-like manner so as to be exchangeable.

On the back side of the radiator 1, a wiring 7 which is a heat-resistant current-carrying circuit is provided along the back surface or along a linear groove 6 formed in the back surface. The base end of each heater 3 is connected to a controller 8 (see FIGS. 4 to 6) provided at an appropriate place according to the application of the present apparatus. Necessary operations such as turning on / off the power to the heater 3 and setting a heating (heating) temperature and a timer are performed by operating parts (not shown) such as knobs provided on the controller 8.
Done by The wiring to the groove 6 is performed by inserting the wiring 7 in the groove 6 in advance, and then filling and fixing a heat-resistant silicon material or the like as a putty 13 in the remaining sectional space.

As shown in FIGS. 4 to 6, a plug 9 is connected to the controller 8 via a power cord 11.
Power is connected to the controller 8 by inserting the plug 9 into an outlet 12 attached to a wall or the like of a room.

FIG. 3 shows an indoor heating device in which the radiator 1 is used as a tile for the wall surface and the floor surface. The radiator 1a is formed on the surface of a wall base 14 made of concrete or the like by a usual tiling method. The sheet heater 3 is mounted and fixed on the entire surface, the sheet heater 3 is buried in each radiator 1a by the above-described method, and the current supply wiring 7 is connected and connected.

Similarly, a large tile-shaped radiator 1 is also provided on the floor side.
b is laid and fixed on the entire surface, and the wiring 7 is provided. These energizations are performed by the aforementioned code or controller (not shown).

It is desirable to provide connectors (not shown) at the adjacent ends of the wirings 7 of the radiators 1a and 1b, which are connected to each other while the tiles are arranged and fixed at appropriate positions.

In the radiator 1 configured as described above, it is possible to use a heater having a capacity of 100 at a voltage of, for example, 100 to 220 V. After energization and heating, the temperature of the radiator 1 itself is captured by a thermo and transmitted to the controller 8. However, the preferred temperature is maintained while being repeatedly turned ON and OFF at a rate of once per hour, so that the heat can always be obtained economically. In order to store the heat retention energy in the case of continuous use without ON and OFF, the time required for heating at the start is 85 ° C. when heating is about 15 to 20 minutes, and is 40 ° C. after turning off the switch. It takes 3 hours to lower the temperature,
During this time, it is possible to achieve extremely energy-saving heat retention in which heat can be received without any power consumption.

Structurally, a heating electric heater (plane heater 3) is disposed and incorporated in each radiator 1 or the radiator 1 at an appropriate interval, and wiring is connected to each heater 3. Safety is ensured by providing a temperature fuse circuit, an over-temperature detection circuit, a surface sensor detection circuit, a (thermo) circuit for detecting a heat-sensitive wire, a fuse circuit (all not shown), and the like. In this example, a wiring circuit for each radiator 1 is provided.
The adjustment of N, OFF, and temperature is left to automatic control after the start of the thermo function or timer function of the detection function.

Therefore, the instruction from the controller 8 is transmitted to the electric heater (heater 3) of the radiator 1, and the temperature of the radiator 1 is controlled. The wiring 7 formed by the heat-resistant wires is divided into electric heaters to form a circuit, and current is supplied to the planar heaters 3 at various places to gradually heat the radiator 1 to the above-mentioned peak temperature of 85 ° C. With
The temperature is automatically adjusted so that it can be used continuously for a long time. The accessory code 11 is supplied with power from the controller 8 on the power supply side by plugging it into the outlet 12 on the power supply side with a cord with a plug 9.

The heat stored in the radiator 1 has a structure in which the temperature reaches 85 ° C. in 15 to 20 minutes after the switch is turned on. When the temperature is reached, the thermostat is turned off and the switch is turned off. The temperature will gradually decrease over time. It is an energy-saving bed that can be heated and treated with minimal power consumption because it has an excellent heat-retaining property and the time required for the temperature to drop to 50 ° C. is 100 minutes, which is 7 times longer than the heat storage time. In addition, the heating type has a large energy effect, and assuming that the radiator 1 is heated to, for example, 100 ° C., unlike other ores, it is naturally made of cotton fabric, unlike other ores due to the characteristics of precious serpentine, as well as safety immediately thereafter. Even if you cover directly,
The dough has properties such as not burning or burning, and there is no particular problem even if a rug of all kinds of bedding is laid on the heated radiator 1, and the safety result that can be used safely can be seen, and even if touched directly with bare hands There is almost no worry about burns. However, it cannot be touched for a long time. Therefore, when touching in a heated state, it is a safety condition that the hand must be touched with a dry cloth. By the way, in the case of other metal objects, ores such as limestone and granite, there is a problem in safety because they are burned or blistered at the moment of direct contact.

As described above, in the above-described embodiment, the radiator 1 of a processed (plate-like) piece of precious serpentine or other effective ore is used as a nucleus, the planar heating heater 3 is used as the radiator 1, and the planar heating heater 3 is used. Is embedded in the radiator 1, and each radiator 1 is stretched on the floor or wall surface of the building and heated by a switch ON to warm the floor wall. Functional energy is radiated from every corner of the heated floor wall to every corner of the room, one third of the calorie consumes enough heat for heating, and healthier far-infrared energy It is a hotbed and wall for healthcare and recuperation that uses heat from the indoor floor and wall to dissipate energy to heat and heat the building, and use energy to dissipate and heat the indoor floor and walls of the building.

FIGS. 4 and 5 show a floor heating apparatus in which the radiator 1 is applied to a tatami mat 16.
Are interpolated and arranged in the cross section. Also in this case, each tatami 1
It is desirable to provide a connector (not shown) at the adjacent end of the wiring 7 for connecting the circuit of the wiring 7 to each other while the tatami mat 16 is properly laid. Reference numeral 17 denotes an adapter with a power input socket 18 attached to a corner of the tatami mat 16 to which power is connected.

That is, in this example, a rated output of 100 V and 100 W is embedded in a rectangular thermal radiator 1 made of a processed piece of precious serpentine or other effective ore by a heating surface heater 3 and spread between two tatami mats. Two radiators 1 are built in and connected by a heat-resistant wire (wiring 7). The size of the built-in radiator 1 is, for example, a thermal radiator having a total length of 250 mm, a width of 80 mm, and a thickness of about 30 mm. The amount of radiation is large tatami 1
It is worthy of a material suitable for warming the sheets.

The controller 8 is set in accordance with an on / off switch and a high / low temperature setting memory. After the elapse of 20 minutes with the switch on, the temperature of the radiator 1 becomes 80
Once again, the thermo switch turns off. At that time, the surface temperature of the tatami reaches 30 to 35 ° C. After a while, the surface temperature increases by about 5 ° C., and the temperature of the radiator 1 gradually decreases. It takes 2 hours to turn off from the maximum set temperature of 80 ° C. and decrease to the minimum temperature of 50 ° C., and no electric power is used for the two hours.

When the temperature of the radiator 1 drops to 50 ° C., the switch is automatically turned on, heat storage is started again, the amount of heat dissipation of the tatami mat is also increased, and the switch is turned off again, and only keeping the temperature for 2 hours. Of heat. When the radiator 1 is heated for the second time on the day, the maximum set temperature of 80 ° C. is reached in 5 minutes of heating, so that the purpose is repeatedly achieved. Due to the nature of precious stones, a safety switch works to raise the dangerous temperature caused by the occurrence of a thermo or timer trouble, and the heat quality of the ore dissipates the fire.

As for the durability, the heat generating heater 3 having the function of switching on 100,000 times is used. In view of the service life, if the number of ONs is five times a day and the number of times is 1825 times a year, or 100,000 times a year, the product has excellent durability that can be used continuously for 54 years. On the other hand, radiator 1
Is a serpentine stone that has endured nature for tens of thousands of years.
It is semi-permanent regardless of any burden when heated to 00-200 ° C. The problem is related to the operating devices, and there is no other problem in the code position from the controller 8, and the code 11 is easily replaced and replaced each time.

The tatami mats are required to have a heat-promoting energy-saving tatami which is particularly useful for keeping warm in winter, preventing mold in summer, antibacterial properties throughout the season, preventing harmful electromagnetic waves, and promoting health by heating. It is characterized by.

FIGS. 6 and 7 show a pet house 21 for dogs to which the apparatus of the present invention is applied, and a bedding (mat) for pets used in the pet house 21. The house 21 is made of the above-mentioned stone radiation. The body 1 is used as a floor material, the left and right peripheral walls 22 and the front and rear peripheral walls 23 are assembled in a box shape, and a roof 24 is attached to the upper part. An entrance 26 is formed in the front wall 23 and the left and right walls 2 are formed.
Numeral 2 is a double wall composed of an outer wall 22a and an inner wall 22b via a space 27 having a predetermined gap therein, and the inside and the outside have a heat insulating structure.

A ventilation window 29 having a net (wire mesh) 28 is formed on each of the inner and outer walls 22a and 22b, and is wound on a winding shaft 31 with a handle at the upper end of the space 27 in a roll shape. In addition, a heat insulating sheet 32 for closing and closing the ventilation window 29 is pivotally supported in the front-rear direction so as to be able to be extended, and the sheet 32 is moved up and down and opened and closed by operating a handle of the reel 31 protruding forward. With this mechanism, the seat 32 is lowered during the cooling and heating of the house 21 to maintain the room temperature inside.

In the cross section of the radiator 1 used as a floor plate, a suitable number of pipe-shaped heaters (seeds heaters) 3 are inserted and removed in the left-right direction (or in the front-rear direction) so that they can be inserted and removed, and radiated. The body 1 is electrically heated to heat the floor of the house 21.

The housing 2 of the radiator 1 for housing the heater 3 may be formed by forming a hole in a cross section along a plane direction, or a U-shaped groove from the bottom side as shown in the figure. May be formed. When the grooves are formed, after the heater 3 is inserted, a fixing member 4 'made of a putty such as a heat-resistant silicon material or a plate-like cover is housed and fixedly held.

The mat 3 shown in FIG.
3 (details will be described later).
It is also possible to insert a cold insulator stored in a tube into a groove formed separately from the housing section 2 in a hot season such as summer, as described later, to perform floor cooling.

The structural functions of the pet house 21 and the mat 33 will be described in more detail. The noble serpentine is used as the thermal radiator 1 in winter, and the heating heater 3 is also built in the radiator 1 and the radiator 1 is built in the center of the floor of the pet house 21. The intermittent operation is repeatedly performed so that the floor is warmed by the auto switch ON and turned off when the temperature becomes constant. The house 21 can be used as a house for large dogs, small dogs, cats and other pets. For the bedding composed of the mat 33, the size of the thermal radiator 1 'and the capacity thereof are determined based on the premise of a size suitable for pets. Also set.

The body material of the mat 33 is made of polyethylene 34 mixed with fine particles of ore (precious serpentine) and foamed, molded into each shape with a constant thickness and size, and heat-resistant cotton 36 is provided at the center. The heating radiator 1 wrapped with thick cotton cloth is filled, a needle felt (not shown) made of aura cotton is laid as a soft material on the upper surface of the polyethylene foam 34, and the bedding is further laid with the thick cotton cloth 37. The body is completed by wearing the surface of.

The heat radiator 1 'is built in the main body of the mat 33, and a thermostat for adjusting the temperature of the heat radiator 1' is incorporated to sense the temperature and transmit the signal to the auto switch while repeating ON and OFF. It has a structure to expand the activity of the controller's strength setting scale range. The radiator 1 'is formed of the above-mentioned stone material made of a noble serpentine or the like.

The heating ring type pipe heater 3 built in the radiator 1 'is rated at a voltage of 100V and a capacity of 100V.
W, insulation resistance 50Meg · Ω or more, withstand voltage 1000V
/ Min or more, water / atmosphere is 5 kg / cm2 or more, timer rating is 10A, 300V, AC, applicable wire is 6
A 00 V vinyl insulated wire (1 V) or a 600 V insulated vinyl sheath cable (VVF) for 1.6 mm diameter or 2 mm diameter, dedicated to single Cu (copper) wire. Operate by assembling within the capacity range with the above ratings. Controller 8
20 minutes, 40 minutes, 60 minutes, 80 to the right from the continuous scale
It can be used by setting the desired time to minutes, 100 minutes, and 120 minutes.

Even in continuous setting, ON / OFF and temperature adjustment are automatic, and if set to a temperature suitable for the animal, it automatically reciprocates within the temperature setting range with ONN and OFF, enabling long-time and short-time automatic operation. It is.

The heating time is short, and only one tenth of the power consumption of the heat dissipation time is required. In particular, the odor of pets, which is anxious, has a large antibacterial, deodorant and antifungal effect of the components contained in the precious serpentine, and the inside can be kept clean.

Incidentally, the conventional pet house has no antibacterial, deodorant or antifungal properties, is merely a container, and is hardly considered as a bed.

The heat house 21 is a pet house having the above-described functions such as antibacterial and deodorant heat keeping functions and the like, and is a pet house whose structure is mostly made of a single-layer panel.
The above-mentioned house 21 requires air permeability in various parts of the inner and outer panels, and a sanitary panel-like side wall 22 covered with a wire mesh and a roof 24.
It is a house located on all sides except the floor and the entrance.
The ventilation structure fits in the summer, but is inadequate in the winter. Therefore, in the space 27 between the outer panel and the inner panel, a wind-up / rewind type for adjusting the room temperature, which is useful throughout the four seasons to block winter winds and other measures, such as winter measures. The sheet 32 is incorporated, and in the summer season, it is completely wound up to obtain air permeability, and in the winter season, the cold wind is lowered to completely shut off and warms up. The pet house 21 is a house suitable for the four seasons in order to make the summer cool and the winter warm and easy to spend in the summer with three layers of inside and outside.

A precious serpentine radiator 1 that emits a large amount of far-infrared rays is assembled on the floor material of the house 21 to maintain the health of pets, and the radiator 1 is processed to incorporate a heat source heater 3. .

In the summer, a plurality of mounting grooves for floor material are provided, and a cylindrical ore radiator (not shown) containing a vinyl tube (not shown) containing a coolant is fitted on the floor and used. In this case, the floor temperature in the house 21 is lowered to avoid an intense heat. To describe the cooling function experiment for cooling, the temperature is measured from one point outside the cooling radiator assuming a test at a temperature of 24 ° C. of the outside air.

First, the cooled radiator 1 which has been frozen in the freezer after refrigeration is taken out. Measurement temperature -9.0 ° C immediately after taking out,
Measurement temperature 5.8 ° C after 60 minutes, 12.1 ° C after 120 minutes, 17.7 after 180 minutes
° C, measurement temperature after 240 minutes 20 ° C, measurement temperature after 300 minutes 23 ° C, measurement temperature after 360 minutes 23.1
The temperature of 23.4 ° C after 420 minutes has passed, the temperature of 23.4 ° C, the temperature of the outside air has been kept at 24 ° C for 7 hours. Just put on the floor, the pet house can be expected to have a sufficiently cooled environment. However, the use of a tube containing a cooling agent to be inserted into a cylindrical radiator is limited to summer only. In winter, only the cylindrical tube containing a cooling agent is extracted from the radiator and only the cylindrical radiator is used. The feature is that it is multi-application and uses at room temperature without warming in spring and autumn, cools in summer and warms the heat radiator in winter. A healthy pet house suitable for the four seasons can be obtained.

In addition, the temperature 3 of the radiator 1 on the house floor in winter
It is set so that it can be controlled in the range of 5 to 50 ° C,
The maximum temperature is set to 50 ° C. and the minimum temperature is set to 35 ° C., and the controller repeatedly sets the operating range for each pet type by turning ON and OFF at a temperature in this temperature range, and also enables temperature adjustment according to each pet. An artificial pet house having a hygienic environment with energy saving durability, safety, antibacterial deodorization and antifungal properties, which is applied to the same heat retaining property as described above.

By the way, an example in which an experiment was conducted on a favorite bed of small animals such as dogs and cats and hamsters will be described. A conventional futon is stored in one closet, and a futon containing cotton containing kneaded serpentine powder is stored in the other closet. When both sliding doors are slightly opened, dogs and cats always enter the closet of the knitted futon-knitted futon and rest on the futon again.

Dogs and cats usually do not want to go out without being disturbed even if they are forced into the futon storage space anyway. The same is true for dozens of repetitions. I strongly felt that she wanted to go into the storage of the quilt with knitted serpentine, and she seemed to fall asleep as soon as she came in. This tendency was particularly strong for sick dogs and cats, and I felt a difference from ordinary futons.

According to the results of another test, a futon mixed with a serpentine quilt and a normal futon were laid one by one between Japan, and when the dog and cat were released to observe the operation, the pet was once set to the normal futon. Then, without resting, he sits on the mixed futon with the smell and lays down and sleeps.

[0055] Separately, hamsters are kept as appreciation animals in mini-houses. A small nest box is prepared in the mini-house, and a precious serpentine mixed cotton is placed in the house. If you prepare a variety of cotton such as feathers, synthetic fibers, wool, cotton, etc. little by little, be sure to select and carry only the serpentine-mixed cotton into the nest box and sink into the cotton.

In fact, many of the owners have reported the above facts.

According to the present invention, an environmentally sanitary pet having a heat retaining property, a deodorant property, an antibacterial property and an antifungal property incorporating an ore radiator for large and small animals whose temperature can be adjusted for each of the pet's favorite temperatures. You can get a suitable house.

In this specification, the same reference numerals are used for the parts having the same structure and function in each part of the technical structure, and the structure and function are repeatedly described through the description of FIGS. , And the same reference numerals denote the same components and functions throughout the drawings.

[0059]

According to the present invention constructed as described above, a maintenance pipe and a running cost can be obtained at a low cost without the need for a heating pipe or the like. In addition, there is an advantage of obtaining a heating device that is soft and has excellent effects in terms of health, hygiene, thermal treatment, and the like.

In the case where a cooling material is accommodated in the cross section of the radiator used as the floor material of the pet house, the cooling in the house can be obtained simply and at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view of a radiator used in the present invention.

FIG. 2 is a sectional view of a radiator used in the present invention.

FIG. 3 is a perspective view of a wall and floor heating device using a radiator.

FIG. 4 is a perspective view of a tatami mat when the present invention is applied to the tatami mat.

FIG. 5 is a perspective view of a tatami mat being laid.

FIG. 6 is a partial sectional perspective view of a pet house.

FIG. 7 is a partial sectional perspective view of a mat for a pet house.

FIG. 8 is a far-infrared emissivity table of noble serpentine at 40.9 ° C.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Radiator 2 Housing part 3 Heater 16 Tatami 21 Pet house 29 Ventilation window 32 Insulation sheet

Claims (8)

[Claims] 1. A heating device in which a heating heater (3) is built in a wall surface or a floor surface constituting an indoor surface, wherein the heat resistance is excellent along the indoor surface with excellent heat retention, heat storage and far-infrared radiation. An indoor surface heating device comprising: a plate-shaped radiator (1) made of a natural stone material; and a heater (3) for heating the radiator, inside or behind the radiator (1). 2. The radiator (1) comprising serpentine.
Indoor surface heating system. 3. The radiator (1) has a concave receiving portion (2) for inserting a heater on the back side thereof, and the heater (3) is inserted and fixed in the receiving portion (2). 2. Indoor surface heating device. 4. The indoor surface heating device according to claim 1, wherein the radiator (1) is accommodated in a cross section of the tatami (16), and the tatami (16) is laid in a room. 5. The radiator (1) is assembled on a pet house (21) body as a floor material for the pet house.
Or 2 or 3 indoor surface heating devices. 6. The heater (3) is a rod-shaped heater,
6. The indoor surface according to claim 5, wherein a housing portion (2) for housing the rod-shaped heater (3) is formed in a cross section of the radiator, and the heater (3) is inserted and fixed in the housing portion (2). Heating system. 7. A heat insulating sheet (3) for forming a ventilation window (29) on the peripheral wall of the pet house (21) and moving up and down along the peripheral wall to block and open the ventilation window (29).
7. The indoor surface heating device according to claim 5, wherein 2) is provided. 8. The indoor surface heating device according to claim 5, wherein a groove-shaped accommodation portion is formed in a cross section of the radiator (1), and a cooling material is accommodated in the accommodation portion.