JP2948139B2 - Warmer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warming device having a function of treating a negative potential.

[0002]

2. Description of the Related Art Conventionally, as a warming device for warming the human body,
Various things such as electric blankets, electric carpets, foot warmers and the like have been developed. Since the negative potential has a therapeutic effect such as shoulder stiffness, for example, as disclosed in JP-A-62-74373 and JP-A-3-191967,
A warming device having a negative potential treatment function has been developed.

In such a warming device, a high-level negative potential (negative potential) is supplied from the negative potential side terminal while the positive potential side terminal of the negative potential generation circuit (negative potential generation circuit) is held at the ground potential.
Is generated, and the negative potential is applied to an electrode (electric floor) built in the heater body.

[0004] Usually, a resistor of a heater is commonly used as a heating element and an electric floor for providing a negative potential. Therefore, in a half cycle of the AC voltage, a heater made of a resistor is connected to the AC power supply to generate heat, the heater is cut off from the AC power supply in the remaining half cycle of the AC voltage, and a negative potential is generated by the negative potential generating circuit. A high voltage is applied to the heater.

FIG. 6 is a circuit diagram showing an example of a conventional warming device. In FIG. 6, outlet (connection port for power supply)
One electrode n1 of 300 is connected to an inactive line (ground potential line) 301 of an AC power supply (commercial power supply power supply) AC,
The other electrode n2 is connected to a live line (non-ground side potential line) 302 of the AC power supply AC. One electrode of the plug (connector for power intake) 51 is connected to the line L1, and the other electrode is connected to the line L2. Line L1,
A DC power supply circuit 54 for generating a predetermined DC voltage is connected to L2 via a transformer 53.

When the main switch 52 is turned on by inserting the plug 51 into the outlet 300, the lines L1, L
An AC voltage is applied between the two. Then, the delay circuit 55
Turns off the contact of the relay 56 for a certain period of time. Meanwhile, the ground line detection circuit 58 detects whether the line L2 is connected to the non-active line 301 side of the AC power supply AC.

[0007] For example, when a line L2 is connected to the hot 302 side, current flows I ₀ to the line L2 from the capacitance C which exists between the ground G and Todan tool body via a line L4 and a resistor R . As a result, the ground line detection circuit 58 connects the contact of the relay 57 to the terminal b. Conversely, line L2 when connected to Hikatsusen 301 side, the line L4, the resistor R and the line L2 current I ₀ does not flow. Thereby, the ground line detection circuit 58 connects the contact of the relay 57 to the terminal a. Thereafter, the delay circuit 55 turns on the contact of the relay 56.
Thus, the line L4 is always connected to the inactive line 301 side of the AC power supply AC.

The negative potential generating circuit 59 has a positive potential side terminal N11 connected to the line L4 and a negative potential side terminal N12 connected to one end of the heater 70 via the protection resistor 60. This negative potential generating circuit 59 is connected to a positive potential side terminal N11.
Generates a high-level negative potential (negative potential) from the negative potential side terminal N12 in a state in which the negative potential is held at the ground potential. To the node N10). Control circuit 61
Turns on the thyristor 62 in the negative half cycle of the AC voltage from the AC power supply AC and turns off the thyristor 62 in the positive half cycle of the AC voltage.

FIG. 7A shows the AC voltage of the AC power supply AC, FIG. 7B shows the potential at one end of the heater 70, and FIG.
Indicates a current flowing through the heater 70. As shown in FIG. 7, a negative potential is applied to the heater 70 in the positive half cycle of the AC voltage, and the heater 7 is supplied in the negative half cycle of the AC voltage.
Current is supplied to zero. Thereby, the negative potential treatment function is exhibited in the positive half cycle of the AC voltage, and the heater is heated in the negative half cycle of the AC voltage.

[0010]

In the above-mentioned conventional warming device, the negative potential treatment function is exhibited only in a half cycle of the AC voltage, so that the generation pattern of the negative potential is limited. Therefore, it is difficult to perform an effective treatment according to symptoms such as shoulder stiffness.

An object of the present invention is to provide a warming device having a negative potential treatment function capable of generating a negative potential in an arbitrary pattern.

[0012]

Means for Solving the Problems and Effects of the Invention

(1) First invention A warming tool according to a first invention comprises a heating element, a current supply means for supplying a current to the heating element, a negative potential generating means for generating a negative potential, and a heating element separately. An electrode provided to which a negative potential generated by the negative potential generating means is provided, and control means for controlling a negative potential generating pattern by the negative potential generating means.

In the heating device according to the first aspect of the present invention, a current is supplied to the heating element by the current supply means, and a negative potential is applied to the electrode by the negative potential generation means. Since the electrode is provided separately from the heating element, the control means can arbitrarily control the generation pattern of the negative potential. Therefore, the negative potential treatment can be effectively performed according to the symptoms.

(2) Second invention In a warming implement according to a second invention, in the configuration of the warming implement according to the first invention, the control means includes a storage means for storing one or a plurality of negative potential generation patterns. Selecting means for selecting one or a plurality of negative potential generating patterns stored in the storage means, and negative potential generating pattern control for controlling the negative potential generating means based on the negative potential generating pattern selected by the selecting means. Means.

In the heating device according to the second aspect of the present invention, one or more negative potential generation patterns are stored in the storage means in advance, so that the user can select a desired negative potential generation pattern by the selection means. Thereby, negative potential treatment according to the symptoms can be easily performed.

(3) Third invention A heating device according to a third invention is the heating device according to the first or second invention, wherein the negative potential generation pattern includes a generation timing and a generation period of the negative potential. It is a thing. In this case, the generation timing and generation period of the negative potential generated by the negative potential generation means can be arbitrarily changed.

(4) Fourth invention A heating device according to a fourth invention is the heating device according to the first, second or third invention, wherein the negative potential generation pattern includes a level of a negative potential. . In this case, the level of the negative potential generated by the negative potential generating means can be arbitrarily changed.

(5) Fifth invention A heating device according to a fifth invention is the heating device according to the first, second, third or fourth invention, wherein the heating element comprises a heating wire, and the electrode comprises an electrode. Consists of a shield conductor surrounding the periphery of the heating wire. Thereby, the heating element and the electrodes are configured compactly, and handling becomes easy.

[0019]

FIG. 1 is a circuit diagram of a heater according to an embodiment of the present invention. This warming tool is, for example, an electric blanket, an electric carpet, or a foot warmer. The heating device of FIG. 1 includes a controller 100 and a heating device main body 200.

A heater 10 and a temperature sensor 12 are built in the main body 200 of the heater. The heater 10 has a first
, A second heating conductor 10b and a shield conductor 10c. On the other hand, the temperature sensor 12 includes a heat-sensitive wire 12a and a shield conductor 12b. In this embodiment, the shield conductor 10c of the heater 10 and the shield conductor 12b of the temperature sensor 12 are used as the electric floor 40 for applying a negative potential.

The controller section 100 mainly includes diodes 1 and 2, a negative potential generating circuit (negative potential generating circuit) 3, a temperature control circuit 4, a transformer 5, a DC power supply circuit 6, a microcomputer 7, a main switch 9, and a thyristor 13. And a switching element 14.

The line L1 is connected to one electrode of the plug 8, and the line L2 is connected to the plug 8 via the main switch 9.
Is connected to the other electrode. The anode of diode 1 is connected to node N1, and the cathode is connected to line L1. The anode of diode 2 is connected to node N1, and the cathode is connected to line L2. These diodes 1 and 2 constitute a positive potential side terminal connection circuit 30.

The primary winding 5a of the transformer 5 has lines L1 and L
It is connected between the two. One power supply terminal 3a of the negative potential generation circuit 3 is connected to one end of one secondary winding 5b of the transformer 5, and the other power supply terminal 3b is connected to the other end of the secondary winding 5b via the switching element 14. It is connected. The positive potential side terminal 31 of the negative potential generating circuit 3 is connected to the node N1, and the negative potential side terminal 32 is connected to the shield conductor 10c of the heater 10 and the shield conductor 12b of the temperature sensor 12. The negative potential generating circuit 3 is composed of, for example, a two-stage two-stage overlapping quadruple voltage circuit.
A negative potential of 00V is output.

The negative potential generating circuit 3 has a built-in switching circuit for switching the level of the generated negative potential. A DC power supply circuit 6 is connected to the other secondary winding 5c of the transformer 5. The microcomputer 7
In accordance with a preset control program and a negative potential generation pattern, a control signal SC for controlling the generation timing and generation period of the negative potential is supplied to the switching element 14 and the level of the negative potential is switched to the negative potential generation circuit 3. Is given. A DC voltage for operating the microcomputer 7 is provided by a DC power supply circuit 6.

A diode 1 is connected between one end of the first heating conductor 10a of the heater 10 and one end of the second heating conductor 10b.
1 is connected. The other end of the first heating conductor 10a is connected to the line L1, and the other end of the second heating conductor 10b is connected to the line L2 via the thyristor 13. Both ends of the heat-sensitive wire 12 a of the temperature sensor 12 are connected to the temperature control circuit 4. The temperature control circuit 4 controls on / off of the thyristor 13 based on the value of the current flowing through the heat-sensitive wire 12a.

One electrode of the outlet 300 is an inactive line (ground potential line) of an AC power supply (commercial power supply power supply) AC.
The other electrode is connected to a live line (non-ground side potential line) 302 of the AC power supply AC.

When the plug 8 is inserted into the outlet 300 and the main switch 9 is turned on, the first heating conductor 10a, the diode 11, the second
A current flows through the line L2 via the heating conductor 10b and the thyristor 13. Thereby, the first and second heat generating conductors 10a and 10b of the heater 10 generate heat. At this time, the temperature control circuit 4 controls the temperature by turning on and off the thyristor 13 based on the value of the current flowing through the heat-sensitive wire 12a of the temperature sensor 12.

On the other hand, the potential of the node N1 is
2 keeps it at ground potential or negative potential. When the microcomputer 7 turns on the switching element 14 by the control signal SC, a negative potential is generated from the negative potential side terminal 32 of the negative potential generating circuit 3. This negative potential is applied to the shield conductor 10c of the heater 10 and the shield conductor 12b of the temperature sensor 12, which serve as the electric floor 40. Thereby, a negative potential treatment function is exhibited. The level of the negative potential generated by the negative potential generating circuit 3 is switched by a control signal VC of the microcomputer 7.

FIG. 2A is a waveform diagram of the AC voltage of the AC power supply AC, and FIG. 2B is a waveform diagram of the potential of the electric floor 40. As shown in FIG. 2A, the AC voltage of the AC power supply AC changes sinusoidally between + E and -E. As shown in FIG. 2B, the potential of the electric bed 40 becomes -Vn in a positive half cycle of the AC voltage, and becomes -Vn in a negative half cycle.
-E.

FIG. 3 is a block diagram showing the configuration of the microcomputer 7. As shown in FIG. 3, the microcomputer 7 includes a CPU (Central Processing Unit) 71, RA
M (random access memory) 72, ROM (read only memory) 73, timer 74 and input / output interface 75.

The ROM 73 stores a control program, and includes a plurality of timings and generation periods (control on the time axis) of the negative potential by the negative potential generation circuit 3 and a plurality of levels of the negative potential (control on the amplitude). Is stored. The RAM 72 is used as a temporary data storage area and a work area. CPU
The selection signal SE is given to 71 from the operation switch 76 via the input / output interface 75. CPU 71
Operates according to a control program stored in the ROM 73, selects one of the negative potential generation patterns from the ROM 73 based on a selection signal SE given from the operation switch 76, and performs input / output based on the selected negative potential generation pattern. The control signal SC and the control signal VC are output via the interface 75.

Note that the negative potential generation pattern is EEPRO
M, or may be stored in a non-volatile memory such as an IC card.
In this case, it is possible to add or change the negative potential generation pattern using the operation switch 76.

FIGS. 4 and 5 are diagrams showing examples of negative potential generation patterns. In the example of FIG. 4A, the same level of negative potential is continuously generated for a certain period. In the example of FIG. 4B, the same level of negative potential is generated intermittently for a fixed period. In the example of FIG. 4C, the same level of negative potential is generated intermittently for different periods.

In the example of FIG. 5A, negative potentials of different levels are continuously generated. In the example of FIG. 5B, different levels of negative potentials are generated intermittently at regular intervals. In the example of FIG. 5C, different levels of negative potential are generated intermittently for different periods.

As described above, in the warming device of this embodiment, the generation pattern of the negative potential generated from the negative potential generating circuit 3 can be arbitrarily changed under the control of the microcomputer 7. Thereby, the negative potential treatment according to the symptoms can be performed.

In the above embodiment, the level of the negative potential is changed stepwise, but the level of the negative potential may be changed continuously.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a warming tool according to an embodiment of the present invention.

FIG. 2 is a waveform diagram of an AC voltage of an AC power supply and a potential of an electric floor of the warming tool of FIG.

FIG. 3 is a block diagram showing a configuration of a microcomputer in the warming tool of FIG.

FIG. 4 is a diagram showing an example of a negative potential generation pattern generated by a negative potential generation circuit of the heating device of FIG. 1;

FIG. 5 is a diagram showing an example of a negative potential generation pattern generated by a negative potential generation circuit of the heating device of FIG. 1;

FIG. 6 is a circuit diagram showing an example of a conventional warming tool.

FIG. 7 is a waveform diagram of an AC voltage of an AC power supply, a potential at one end of the heater, and a current flowing through the heater in the conventional warming device.

[Explanation of symbols]

 Reference Signs List 3 negative potential generating circuit 7 microcomputer 10 heater 10a first heating conductor 10b second heating conductor 10c shield conductor 12 temperature sensor 12a heat-sensitive wire 12b shield conductor 40 electric floor 71 CPU 72 RAM 73 ROM 74 input / output interface 75 timer 76 Operation switch 100 Controller 200 Heating device main body

Claims (4)

(57) [Claims] A first heat generating conductor; a second heat generating conductor provided along the first heat generating conductor; a negative potential generating means for generating a negative potential; A shield conductor provided so as to integrally surround the periphery of the conductor, to which a negative potential generated by the negative potential generating means is applied; a current supply means for supplying a current; and a negative potential generated by the negative potential generating means. Control means for controlling a generation pattern, wherein one end of the first and second heating conductors are electrically connected to each other, and the current supply means connects the other end of the first heating conductor from the other end of the first heating conductor. 2. A heater according to claim 2, wherein a current is supplied to the other end of the heating conductor. 2. The control unit includes: a storage unit configured to store one or a plurality of negative potential generation patterns; a selection unit configured to select one or a plurality of negative potential generation patterns stored in the storage unit; The heating tool according to claim 1, further comprising: a negative potential generation pattern control unit that controls the negative potential generation unit based on the negative potential generation pattern selected by the selection unit. 3. The warming tool according to claim 1, wherein the negative potential generation pattern includes a generation timing and a generation period of a negative potential. 4. The warming tool according to claim 1, wherein the negative potential generation pattern includes a level of a negative potential.