JPS6233224A - Heating device - Google Patents

Abstract

PURPOSE:To provide a warming device which enables warming of the whole tip parts of feet of a user in a short time, by a method wherein, in addition to control of heating of the main unit, a bag part which wraps the whole tip parts of the feet of the user is placed, and heating of the bag part is controlled. CONSTITUTION:A warming device 1 is provided with a first heating body 3, a first temperature sensor 4, second heat-generating materials 31 and 32, and a bag part 30 in which a second sensor is wired. In a heat-generating material heating the main unit and in a control part 51 therefor, through comparison of main unit temperature with the set temperature of the main unit, the heat- generating material 3 is controlled ON and OFF. In the heat-generating material 31 heating the bag part and in a control part 52 therefor, through comparison of the temperature of the whole bag body which wraps the whole tip parts of feet with the set temperature of the bag part, the heat-generating material 31 is controlled ON and OFF. Switches 49 and 50, forcibly deciding the presence of energization to the heat generating material 3, can forcibly select in a 4-mode manner the presence of energization to the heat-generating material 3 heating the whole main unit and the presence of energization to the heat-generating material 31 heating the whole bag body.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a heating device such as an electric blanket.

(Prior Art) Conventionally, this type of heating device has a configuration as shown in FIGS. 6 and 7. In the figure, 1 is a main body, 2 is a controller, 3 is a heating element, and 4 is a temperature sensor. 7th
The figure is its electrical circuit diagram.

In the figure, 5 is an AC power supply Vac, and a capacitor 6
, a diode 7.8 and an electrolytic capacitor 9 create a DC power supply Vcc. The heating element 3 and the temperature sensor 4 change their impedance according to the temperature of the main body 1 shown in FIG. 6, and exhibit low impedance when the temperature of the main body 1 is high, and high impedance when the temperature of the main body 1 is low. 10 is a thyristor, 11 is a base-grounded NPN transistor, 12 is a diode, 13 is an electrolytic capacitor, 14 is a comparator, 15 to 23 are resistors, 24 is a variable resistor,
25 is an NPN transistor. Further, 26 is a temperature signal detection circuit, 27 is a temperature setting circuit, 28 is a comparison circuit, 2
9 indicates a hysteresis circuit.

The temperature signal voltage V of the temperature signal detection circuit 26 is determined by the impedance of the temperature sensor 4. That is, main body 1
Since the temperature sensor 4 exhibits high impedance when the temperature of V is low, the sensor current flowing through the temperature sensor 4 becomes small and
? is high, and when the temperature of the main body 1 is high, the temperature sensor 4 exhibits low impedance, so the sensor current becomes large, and (a) is low. This temperature signal voltage V and the temperature setting voltage vR of the temperature setting circuit 27 are compared in the comparator circuit 28, and if 7≧vR, that is, the main body temperature is lower than the set temperature, the output of the comparator 14 is high. Nari, thyristor 10
turns on, energizing the heating element 3, and when V<V*, that is, when the body temperature is higher than the set temperature, the output of the comparator 14 becomes low and the thyristor 10 turns off.
Therefore, the heating element 3 is not energized.

A hysteresis circuit 29 turns on and off transistors 1 to 25 according to the output of the comparator 14, and applies hysteresis to the input of the comparator 14.

■, if ≧v1, vR is resistor 18, 19.23
determined by the division of the variable resistor 24, V? <VR
In the case of resistors 18, 19 and variable resistors 24.
Since V□ is determined by , when ■,≧vII, v
R is V? The value is lower than when < v-.

By applying hysteresis, the output of the comparator 14 is stabilized. In this way, turn on the temperature control of main body 1.

This is done through repeated OFF control.

(Problem to be solved by the invention) Conventional warming devices control the heating of the entire body, so the user starts using it when the tops of the feet, soles, and other toes of the feet are completely cold. In this case, it took a long time for the entire toe area to warm up, causing discomfort to the user.

In particular, when going to bed, the user cannot sleep unless the entire toe area is warmed, so conventional heating devices have the drawback of not being able to sleep comfortably. When the user was elderly or sensitive to cold, it took more than an hour to fall asleep.

There is a method to heat the toes by wiring the heating element in the toes closely, but this method has the disadvantage that it only warms a part of the toes and cannot warm the entire toes. .

The purpose of the present invention is to eliminate the drawbacks of the conventional technology and to provide a device for use when the user's feet are completely cold.

To provide a warming device capable of warming the entire foot area in a short time.

(Means for solving the problems) The heating device of the present invention includes a first heating element that heats the main body;
A first temperature sensor that detects the temperature of the main body, a second heating element that is wired to a bag that wraps around the user's entire toes and heats the entire toes of the user, and a second heating element that measures the temperature of the toes. Second to detect
a temperature sensor, first and second temperature detection circuits that detect signals from the first and second temperature sensors, a first temperature setting circuit that sets the temperature of the main body, and a temperature of the bag section. a second temperature setting circuit that compares the respective signals;
The control section includes a second comparison circuit and a control section.

(Function) According to the present invention, when a user starts using the toe area such as the top of the foot or the sole of the foot in a cold state, the second heating element is driven to heat the entire toe area. Since it is possible to heat the room in a short time, you can always feel comfortable, and when you go to bed, you can get a comfortable sleep in a short time.

(Example) An example of the present invention will be described based on FIGS. 1 to 5. In this figure, parts that are the same as those in FIGS. 6 and 7 are designated by the same numbers, and their explanations will be omitted.

FIG. 1 is a circuit diagram of the heating device of the present invention seen from above, where 30 is a bag portion that envelops the entire toe area, 31° and 32 are a second heating element and a second heating element wired to the bag portion, respectively. It is a temperature sensor. The second temperature sensor 32 is the first temperature sensor 4
Similar to the characteristics of , when the temperature of the bag part is low, it shows high impedance, and when it is high, it shows low impedance.

2 and 3 are a perspective view and a side view of the heating device of the present invention. FIG. 4 is a detailed view of the same bag section, and in addition to the conventional example's first heating element 3 and first temperature sensor 4, three new ones are added.
1.32 is a detailed wiring diagram of the bag portion 30 in which the second heating element and the second temperature sensor are wired. FIG. 5 shows an electric circuit diagram of the present invention, in which 33 is a thyristor, 34 is a base-grounded NPN transistor, 35 is a diode,
36 is an electrolytic capacitor, 37 is a comparator, 38 to 46 are resistors, 47 is a variable resistor, 48 is an NPN transistor, and 49 and 50 are switches. 51 indicates a heating element that heats the main body and its control unit (2
6 is a temperature signal detection circuit, 27 is a temperature setting circuit, 28 is a comparison circuit, 29 is a hysteresis circuit), 52
1 shows a heating element 31 that heats the bag that envelops the entire toes of the user and its control unit, 53 is a temperature signal detection circuit, 54 is a temperature setting circuit, 55 is a comparison circuit, and 56 is a hysteresis circuit. Shows the circuit. The circuit operation is the same as the conventional example for both circuits 51 and 52, and in 51, the temperature of the main body and
The heating element 3 is turned on and off by comparing the set temperature of the main body, and at 52, the temperature of the entire bag that envelops the user's toes is compared with the set temperature of the bag. , ON/OFF control of the heating element 31 is performed. 49.50 is a switch that forcibly determines whether or not the heating element is energized, and it determines whether or not the heating element 3 that heats the entire body is energized, and whether or not the heating element 31 that heats the entire bag portion is energized. 4 modes can be forcibly selected (these 4 modes are (1): 3 and 31, (2)
) is 3 yes 31 no, (3) is 3 no 31 yes, (4) is 3 no 3
1). For example, when the temperature is a little high (3
) mode and only need to energize the bag (do not energize the entire body).

(Effects of the Invention) According to the present invention, in addition to controlling the heating of the main body, the main body is provided with a bag portion that encloses the entire toes of the user, and the bag portion can be heated and controlled for a short time. This makes it possible to warm the user's entire toes, ensuring a comfortable feeling at all times. Especially when going to bed in the middle of winter, people often start using the device with their toes completely cold.With conventional warming devices, it takes time for the toes to warm up, making it difficult to fall asleep. The heating device has the effect of providing comfortable sleep in a short period of time. In addition, since it is possible to select whether or not to control the heating of the main body or the entire bag portion using a switch, the main body can be controlled in sections, which also has the effect of saving energy.

[Brief explanation of the drawing]

Fig. 1 is a wiring diagram of the heating device of the present invention, Fig. 2 is a perspective view thereof, Fig. 3 is a side view thereof, Fig. 4 is a detailed sectional view of the bag portion, and Fig. 5 is an electric circuit diagram thereof. be. FIG. 6 is a wiring diagram of a conventional heating device, and FIG. 7 is an electric circuit diagram thereof. 1...Body, 2...Controller, 3,31
...Heating element, 4.32...Temperature sensor, 5.
...AC power supply, 6...capacitor, 7,8,12゜35...diode, 9,13.36...electrolytic capacitor, 10.33...thyristor, 11,2
5,34°48...NPN transistor, 14,
37... Comparator, 15, 16, 17, 18,
19, 20, 21, 22, 23, 38, 39°40.4
1,42,43,44,45.46...Resistor, 24
．． 47... Variable resistor, 26, 53... Temperature signal detection circuit, 27.54... Temperature setting circuit, 28...
Comparison circuit, 29.56... Hysteresis circuit, 30.
...Bag portion, 49.50...Switch, 51...Heating element and control unit that heats the main body, 52...Heating element and control unit that heats the bag portion. Fig. 1 32・--MiXa--2:>1 so 1 Fig. 2 Fig. 3

Claims (1)

[Claims] A first heating element that heats the main body, a first temperature sensor that detects the temperature of the main body, and a bag part that wraps around the entire toe of the user are wired to heat the entire toe of the user. a second heating element, a second temperature sensor that detects the temperature of the bag portion, first and second temperature detection circuits that detect signals from the first and second temperature sensors, and the main body. A control comprising: a first temperature setting circuit for setting the temperature of the bag; a second temperature setting circuit for setting the temperature of the bag; and first and second comparison circuits for comparing their respective temperature signals. A heating device characterized by comprising: