JPH058896U - Surface heating tool - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent harmful magnetic field lines or electromagnetic radiation in the air when using a medical instrument or various measurements using a precision measuring instrument when using a surface heating device. A surface heating tool that can be used. A planar heating tool having no magnetic field line obstruction, in which the heating element 2 is covered with a magnetic material 7 around the outer circumference or the upper surface of the heating line 5 to prevent radiation of unnecessary magnetic lines of force in the air.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention includes an electric duvet, an electric blanket, an electric bed, an electric carpet, an electric floor heater, The present invention relates to a surface heating tool such as an electric floor heater.

[0002]

[Prior art]

  As shown in FIG. 4, as a conventional general surface heating device, heat is generated around the insulating core 4. The wire 5 is wound in a spiral shape, and the heating element covered with the insulating outer cover 6 is placed between the outer material and the lining material. They are arranged in a meandering shape, and electric futon (for example Baikai Sho 63-52292), electric blankets, electric sheets, electric carpets, etc. For example, there is JP-A-63-203198).

[0003]   When the heating element is energized to collect heat, magnetic field lines and electromagnetic waves are emitted from the heating line 5 into the air. Is shot. Since the current flowing through the surface heating tool is very small, the generated magnetic field lines are Although it has little effect on general equipment, it uses signals and minute amounts of current and voltage used at close range as signals. There was a problem such as magnetic field line obstruction in measuring instruments and medical instruments handled as

[0004]   Also, the electromagnetic waves generated have little effect on general equipment, but they may come into contact with Not compatible with measuring instruments that handle minute currents and voltages used as signals as signals, televisions, radios, etc. It sometimes had a sound effect. For this reason, the control unit has been protected from noise A built-in stop circuit prevents unnecessary noise from leaking out, but it is completely It was difficult to stop.

[0005]   In particular, a heating element arranged in a meandering shape is used as an antenna to deal with electromagnetic waves radiated in the air. Then there was no satisfactory way.

[0006]

[Problems to be solved by the device]

  In recent years, the measurement technology has become more sophisticated and it is used as useful information even for very small electric signals. There are more and more of these problems, which has never been a problem in the past. Even a slight magnetic field line disturbance or electromagnetic wave can deteriorate the measurement environment. There is a growing interest in field line obstruction and noise reduction, and in terms of electrical circuits and structures, Various ideas have been made.

[0007]   The same applies to surface heating devices such as electric blankets, electric blankets, and electric carpets. Do not use equipment near the surface heating device, or measure with the surface heating device used. It is used in various ways, such as when setting the Even in lines of force, magnetic field line obstruction is becoming more of a problem, and TV Watching radio, radio, etc. near the surface heating tool, or using the surface heating tool While being used in various ways, such as when measuring with a Even noise is becoming a problem.

[0008]

[Means for Solving the Problems]

  The present invention has been made to solve the above-mentioned problems, and prevents magnetic field line obstruction. Is a structure in which the heating element is coated with a magnetic material on the outer circumference or upper surface of the heating wire. It shall be possible to prevent unwanted magnetic field lines from being emitted in the air, and there is no unnecessary magnetic field line obstruction. It provides an environment and also guides the heating element to the outside perimeter or top of the heating wire for noise. It is possible to prevent unnecessary electromagnetic waves from being emitted in the air due to the structure covered with an electric body. However, if the conductor is grounded to the ground, it provides an environment free of unnecessary noise. It is something to offer.

[0009]

[Action]

  Due to the above-mentioned configuration, a sheet-shaped warming tool is used for those coated with a magnetic material. With a medical instrument, etc., in close proximity to the surface heating device, Prevents the magnetic lines of force generated from the heating lines from being emitted to the outside when the measurement is performed. , Which has the function of maintaining a good measurement environment and is coated with a conductor is a TV or radio. When viewing such as near a surface heating tool, or when measuring with a precision measuring instrument It absorbs the electromagnetic waves generated from the heating wires, etc., and reduces the emission of the electromagnetic waves to the outside. , Grounding allows electromagnetic waves to escape to the ground and prevent them from radiating to the outside. , Acts to maintain a good measurement environment.

[0010]

【Example】

  An embodiment of the present invention will be described below with reference to the drawings.

[0011]   Fig. 1 is a simplified external view of a surface heating tool, and Fig. 2 is a contractor for magnetic line disturbance. FIG. 4 is an enlarged structural view of a heating element of the planar heating tool shown in claim 1, and FIG. It is sectional drawing of the planar heating tool shown in Claim 2 which provided.

[0012]   As shown in FIG. 1, the basic structure of the surface heating tool is that the heating element 2 The main body 1 stored and the amount of electricity to the heating element 2 are controlled by thyristor control or the like. The control unit 3 controls the temperature of the body 1.

[0013]   In the main body 1, the heating element 2 is arranged in a meandering shape between the front and back sides made of fiber cloth. , The end portions of the heating element 2 are electrically connected together to the control unit 3 via the connection unit 8. A plug 9 for power supply is connected to the control unit 3.

[0014]   In FIG. 2, the heating element 2 is a heating wire around an insulating core 4 made of polyester fiber or the like. 5 is wound in a spiral shape, the heating wire 5 is covered with an insulating jacket 6, and further the insulating jacket 6 is covered. It is configured to be covered with the magnetic body 7.

[0015]   In FIG. 3, the upper surface of the heating element 2 is covered with a sheet- or plate-shaped magnetic body 7, and the heat insulating material 10 The lining is made of and the surface material 11 is sandwiched.

[0016]   Although not shown, the magnetic body 7 is made of an insulating material for the purpose of protecting the magnetic body 7. The thermistor characteristics are set in parallel with the heating element 2 for the purpose of covering the structure and performing precise temperature control. It is also possible to integrally configure the temperature sensitive material and the signal line.

[0017]   Next, the operation of the sheet heating device having the above structure will be described.

[0018]   The plug 9 is connected to a power outlet, and the heating element 2 is connected via the control unit 3 and the connection unit 8. When you start feeding power to the floor, the heating wire 5 heats up and you can collect heat through the outer material, and comfortable floor heating You can get the environment.

[0019]   By connecting the power source, the magnetic lines of force generated from the heating line 5 when power is turned on can be emptied. Although it is radiated inside, a magnetic material is provided around or on the upper surface of the heating wire 5 of the heating element 2. The magnetic field lines are not radiated to the outside because they are shielded by 7.

[0020]   The sheet-shaped warming tool incorporating the heating element 2 emits magnetic field lines to the outside as described above. By reducing the number, even if you make precise measurements, you will not be affected by magnetic field lines. Can be made.

[0021]   FIG. 4 is an enlarged structural diagram of the heating element according to claim 3, which corresponds to noise caused by electromagnetic waves. FIG. 5 is a sectional view of a sheet heating device according to a fourth embodiment of the present invention, which is also another embodiment.   In FIG. 4, the heating element 2 is a heating wire around an insulating core 4 made of polyester fiber or the like. 5 is wound in a spiral shape, the heating wire 5 is covered with an insulating jacket 6, and further the insulating jacket 6 is covered. The conductor 17 is covered with the conductor 17 through the plug 9 with a ground terminal. It is constructed so that it can be grounded.

[0022]   In FIG. 5, the upper surface of the heating element 2 is covered with a sheet or plate-shaped conductor 17, and the heat insulating material 10 And the surface material 11 sandwiched between them, and the conductor 17 is also grounded. It is configured so that the ground connection wiring can be made via the plug 9 with a child.

[0023]   Although not shown, the conductor 17 is further made of an insulator for the purpose of protecting the conductor 17. The thermistor characteristics are set in parallel with the heating element 2 for the purpose of covering the structure and performing precise temperature control. It is also possible to integrally configure the temperature sensitive material and the signal line.

[0024]   Next, the operation of the sheet heating device having the above structure will be described.

[0025]   Connect the plug 9 with the ground terminal to the power outlet and connect the control unit 3 and the connecting unit 8 to each other. When power supply to the heating element 2 is started via the , You can get a comfortable floor heating environment.

[0026]   By connecting the power supply, noise generated from the power supply, and further, noise generated in the air Electromagnetic noise that enters the heating element 2 as an antenna, or conversely radiates into the air. Noise is also generated from the control unit 3 of the surface heating tool, but heat is generated. The conductor 2 is shielded around or on the upper surface of the heating wire 5 of the body 2. Therefore, noise generated as electromagnetic waves is not radiated to the outside.

[0027]   In addition, the current flowing through the conductor 17 is connected to the ground connection wiring through the plug 9 with a ground terminal. Even if more electromagnetic waves are generated by flowing them through the ground through The influence of can be reduced.

[0028]   The sheet-shaped warming tool incorporating the heating element 2 is an electromagnetic wave that causes noise as described above. TV and radio viewing while collecting heat by reducing the radiation to the outside Even if you make a measurement or make a precise measurement, you will not be affected by noise. Wear. Moreover, in terms of handling, the plug 9 with a ground terminal can be used. Just by doing so, it can be used in the same way as ordinary surface heating equipment, It is intended to be easy to use.

[0029]

[Effect of device]

  As described above, according to the present invention, the heating wire covered with the magnetic material is equivalent to the normal use. While using it as a surface heating tool by the method, medical equipment to be used simultaneously at a close range, Prevents harmful magnetic field line interference to measuring instruments that perform various measurements using weaker signals Or stop the heating because it can significantly reduce unnecessary magnetic field lines. There is an effect that it can be provided as a very effective means, such as enabling measurement without using it.

[0030]   In addition, if the heating wire is covered with a conductor, it can be used for surface heating by the same method as normal use. While using it as a tool, at the same time using weak electromagnetic waves etc. as signals Available for TV, radio, etc., and measuring instruments that perform various measurements using weaker signals As it can prevent harmful noise and reduce unnecessary electromagnetic waves significantly, For example, watching TV and radio while collecting heat may be disturbed by harmful electromagnetic waves. It is possible to enjoy without any trouble, and when performing precise measurements at hospitals, etc. However, it can be provided as a very effective means such as enabling measurement without stopping the collection of heat. There is an effect.

[0031]   It should be noted that grounding allows electromagnetic waves to escape to the ground and radiates them to the outside. Even if more electromagnetic waves are generated, it is possible to reduce the amount of electricity to the surrounding area with a simple configuration. This has the effect of reducing the influence of magnetic waves.

[Brief description of drawings]

FIG. 1 is a simplified external view of a surface heating tool.

FIG. 2 is an enlarged detailed view of a heating element of a sheet-shaped warming tool showing an embodiment of the present invention which copes with a magnetic line disturbance.

FIG. 3 is a cross-sectional view of a planar warming tool showing another embodiment.

FIG. 4 is an enlarged detailed view of the same heating element corresponding to noise.

FIG. 5 is a cross-sectional view of a planar heating tool showing another embodiment.

FIG. 6 is an enlarged detailed view of a heating element of a conventional sheet heating device.

[Explanation of symbols]

1 body 2 heating element 3 control unit 5 heating line 7 Magnetic material 17 conductor

Claims (4)

[Scope of utility model registration request] 1. A planar warming tool in which a heating element (2) that generates heat when energized is arranged in a meandering manner between fiber cloths, wherein the heating element (2) is provided around the heating wire (5). A sheet-like warming tool characterized by being coated with a magnetic body (7) for preventing air radiation of unnecessary magnetic force lines caused by energization. 2. The planar warming tool according to claim 1, wherein the heating element (2) has a structure in which the upper surface of the heating wire (5) is covered with a magnetic material (7). 3. A planar warming tool in which a heating element (2) which generates heat when energized is arranged in a meandering manner between fiber cloths, wherein the heating element (2) is provided around the outer periphery of the heating wire (5). A planar heating tool characterized in that it is electrically grounded to the ground and is covered with a conductor (17) for preventing airborne emission of unnecessary electromagnetic waves generated by energization. 4. The planar warming tool according to claim 3, wherein the heating element (2) has a structure in which an upper surface of the heating wire (5) is covered with a conductor (17).