JPH10255960A - Shield structure for surface heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shield structure for preventing generation of static electricity and cut off transmission of excessive electromagnetic waves to a surface heater in which a semiconductor pattern is resin-sealed. SOLUTION: In a surface heater 1 in which a semiconductor pattern 1d sealed in sheet material 1a of a synthetic resin gets continuous with a supply power source from the external, a shield material 2 to almost wholly cover the sheet material 1a is provided, and the shield member 2 is formed of material having static electricity generation restricting effect, thereby troubles by generation of static electricity and transmission of excessive electromagnetic waves can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planar heater used for, for example, floor heating or a floor mat heating mat.
In particular, the present invention relates to a shield structure for preventing generation of static electricity during a shipping / transporting process after manufacture of a planar heater and during use, and for suppressing emission of electromagnetic waves when energized.

[0002]

2. Description of the Related Art Conventionally, planar heaters have been widely used as heating equipment such as floor heating for general houses, heating mats for floor coverings, and other simple heating equipment. Since the sheet heater is flexible and lightweight, it can be used not only as a flat sheet but also as a cylinder, for example. ing.

As such a planar heater, for example, as described in Japanese Patent Publication No. 1-38359,
There is a configuration in which a paper substrate on which a semiconductor pattern is printed by a silk screen printing method or the like is resin-sealed with a thin resin sheet and an electrode for energizing the semiconductor pattern is included. That is, by applying the development of a pattern forming technique by etching of a lead frame in a recent semiconductor device or the like, a heater configuration capable of coping with a heat generation amount required by forming semiconductor patterns of various modes is provided. What is done is common.

[0004]

When such a planar heater is used for floor heating, for example, a heat insulating material is laid on a floor plate of a building, and a predetermined number of heat insulating materials are laid on the heat insulating material. Work is performed in which planar heaters are arranged and these are further covered with a flooring material. For this reason, in most cases, the sheet heater is carried to the site while the surface of the sheet heater is exposed, and is installed. The sheet heater is previously incorporated in the flooring material, or is housed in a heating mat. Even in this case, it is similarly assembled with its surface exposed.

[0005] Since the conventional planar heater is sealed with a thin-film synthetic resin, generation of static electricity on the surface is inevitable, especially when the humidity is low and dry. In particular, if a plurality of these sheet heaters are stacked and then shipped after manufacturing the sheet heater, the amount of static electricity generated between the overlapping sheet heaters becomes considerably large, and the synthetic resin film is The surface may be damaged.
Further, it is a matter of course that static electricity is generated not only under contact between planar heaters but also under other conditions.

To solve such a problem, if the entire surface of the sheet heater is covered with a cover made of an appropriate material, the contact between the synthetic resins can be avoided to reduce the surface of the sheet heater. Generation of static electricity can be suppressed.

On the other hand, when a semiconductor pattern of the planar heater is energized, an electromagnetic wave is emitted, and a part of the electromagnetic wave is recovered as heat energy, and a desired heating effect is obtained. However,
In the case of floor heating in which a large number of sheet heaters are laid, when all the sheet heaters are energized, the amount of electromagnetic waves emitted becomes excessive, which has a negative effect on the human body rather than the heating effect. In addition, disturbance is given to image reproduction of an indoor television or the like.

[0008] As described above, the planar heater has an obstacle to the surrounding environment due to the emission of an excessive electromagnetic wave in addition to the generation of static electricity on its surface, and a shield structure for eliminating these two sides is required. Is in the current situation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shield structure for preventing generation of static electricity and blocking transmission of excessive electromagnetic waves to a planar heater in which a semiconductor pattern is resin-sealed.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a planar heater capable of conducting a semiconductor pattern sealed in a thin sheet made of synthetic resin to an external power supply.
It is characterized in that a shielding material covering almost the entire sheet material is provided, and this shielding material is formed of a material having an effect of suppressing generation of static electricity.

In the present invention, the shielding material may be formed of a material capable of suppressing emission of electromagnetic waves from the semiconductor pattern to the outside. In this case, the size may be set to cover at least a portion including the region of the semiconductor pattern.

[0012]

FIG. 1 is an exploded perspective view showing a shield structure of the present invention, which is disassembled into a sheet heater and a shield material.

In the drawing, the planar heater 1 is not limited to the one described in, for example, Japanese Patent Publication No. 1-38359 described in the section of the prior art, and can be used as it is. That is, the electrode members 1b and 1c are respectively arranged in a thin film synthetic resin sheet member 1a, and the electrode members 1b and 1c are electrically connected by the semiconductor pattern 1d.
Cords 1g and 1h are connected to one end of 1c via connectors 1e and 1f, respectively.

FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 and schematically showing the positional relationship of the lamination of the sheet material 1a, the electrode materials 1b and 1c, and the semiconductor pattern 1d.

When the sheet heaters 1 are transported or stored in a stacked state, for example, the generation of static electricity due to the contact between the sheet heaters 1 is prevented, or when the semiconductor pattern 1d is energized. In addition, a shield material 2 for shielding electromagnetic waves emitted from this to some extent is provided separately from the planar heater 1.

The shielding material 2 is made of, for example, (SiO ₂
And a bag made of vinyl and a silicon sheet such as SiX). Powder can be blown into or melted into such a material to suppress the generation of static electricity, act as a filter for electromagnetic waves emitted from the semiconductor pattern 1d, and release electromagnetic waves to the outside. It can be converted into good electromagnetic waves.

The shield member 2 is a single sheet as shown in FIG. 1. By folding the shield member into two sheets, almost the entire sheet heater 1 is formed as shown in FIG.
As shown in (1), the connector has a shape large enough to cover everything from the top and bottom except for the connectors 1e and 1f. Then, the sealing line 2a indicated by a dashed line in FIG. 1 is heat-welded by a heat-welding method, as shown in FIG.
As a result, the entire sheet material 1a of the sheet heater 1 is covered, and generation of static electricity due to contact between the sheet materials 1a and friction from the outside is prevented. And
Semiconductor pattern 1d sealed in sheet material 1a
Similarly, since all of them are covered with the shielding material 2, excessive emission of the electromagnetic wave is prevented by the electromagnetic wave blocking effect of the shielding material 2.

Since the entire surface heater 1 is covered with the shield material 2 as described above, the generation of static electricity is suppressed, so that the surface of the sheet material 1a of the surface heater 1 is not damaged, and In such a case, adsorption by static electricity or the like is eliminated, and workability is improved. In addition, since excessive emission of electromagnetic waves can be suppressed, even in the case where a large number of planar heaters 1 are laid for floor heating of a house, the occurrence of obstacles to electric devices such as televisions and other electronic devices can be prevented. Disappears.

[0019]

According to the present invention, the shield material is formed of a material capable of suppressing the generation of static electricity. When transporting the heater, it is possible to prevent the generation of static electricity even when the heater is installed, and it is possible to perform a good installation without causing damage to the surface of the planar heater.

In addition, if a shielding material having a property of blocking electromagnetic waves in addition to the effect of suppressing the generation of static electricity is used, even in a heating facility having a large number of planar heaters, electric equipment and devices caused by excessive electromagnetic waves can be used. Failure to the electronic equipment is also prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a shield structure of the present invention, in which a planar heater and a shield material are exploded.

FIG. 2 is a schematic view showing a lamination of a sheet material, an electrode material, and a semiconductor pattern, which is taken along line AA of FIG.

FIG. 3 is a schematic vertical sectional view of a main part when a sheet material is covered with a shielding material.

FIG. 4 is a schematic perspective view when the sheet heater is covered with a shielding material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Planar heater 1a Sheet material 1b, 1c Electrode material 1d Semiconductor pattern 1e, 1f Connector 1g, 1h: Code 2 Shield material 2a Sealing wire

Claims (3)

[Claims] 1. A sheet heater in which a semiconductor pattern sealed in a thin sheet material made of a synthetic resin can be conducted to a power supply from the outside, and a shield material covering almost the entire sheet material is provided. A shield structure for a planar heater, wherein the shield material is formed of a material having an effect of suppressing static electricity generation. 2. The shield structure for a planar heater according to claim 1, wherein the shield material is formed of a material capable of blocking emission of electromagnetic waves from the semiconductor pattern to the outside. 3. A shield material made of a material capable of blocking and suppressing emission of an electromagnetic wave from a semiconductor pattern to the outside has a size that covers at least a portion including a region of the semiconductor pattern. Shield structure of sheet heater.