JPS61124085A - Warming cloth apparatus for sleeping - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to cloth warming devices for sleeping, such as electric blankets and electric blankets.

Structure of conventional examples and their problems In recent years, cloth warming devices for sleeping such as electric blankets have been sold not only in the form of temperature control using the heat of the heating device itself, but also in methods that control the temperature by influencing the room temperature. It has been reached. The structure of an electric blanket, which is a conventionally known cloth warming device, will be explained below as an example.

What is shown in Fig. 1 is a configuration diagram of a conventional electric blanket.
Reference numeral 1 denotes a blanket body made of cloth, with heater wires 6 arranged in a zigzag pattern inside. The heater wires 6 are arranged so that they are densely arranged at the feet of the electric blanket user and sparsely arranged at the chest region.

2 is a cord port for connecting the heater wire 6 to an external connector 3; 4 is a cord for connecting the electric blanket's temperature control controller 5 and the blanket body 1; and 7 is a power cord extending from the controller 5. Reference numeral 8 shows a person using an electric blanket, with the side where the heater wires 6 are tightly connected being closer to the feet and the side where the heater wires are being loosely connected being the chest side.

What is shown in FIG. 2 is a circuit diagram of a conventional example.

Reference numeral 6 denotes a heater wire, and its configuration is such that a heating element wire 9 and an electric sales wire 11 are disposed at a position facing each other, and a temperature-sensitive material 10 having a negative temperature coefficient of resistance is interposed therebetween. Reference numeral 12 denotes a cyrisk, which is connected in series with the heating element wire 9. A neon lamp 13 is connected between the electrode wire 11 and the gate of the SIRISK-12, and starts and stops discharging at a constant voltage.

Reference numeral 15 is a volume connected in series with the electrode wire 11 and the temperature-sensitive material 1o, so that the temperature can be adjusted. Reference numeral 16 is a protective resistor connected in series with the volume regulator 15, and reference numeral 17 is a room temperature thermistor which changes its resistance value according to changes in room temperature, and is connected in parallel with the temperature sensitive material 10. 18 indicates a power source. 1
4 rfi resistance.

To explain the circuit shown in FIG.
- Protective resistance 16 - Volume 15 - Electrode wire 11 - Temperature sensitive material 1
The control circuit of the heat generating wire 9 and the power supply 18 is entirely parallel, and a thermistor 17 is provided in parallel with the temperature sensitive material 10, and a resistor is interposed on the cand and gate surfaces of the cyrisk 12 to form a virtual circuit configuration.

The operation of the circuit shown in FIG. 2 will be explained below. Since the temperature of the electric blanket is low at the beginning of energization, the impedance characteristic of the temperature-sensitive material 10 is high, and when (a) is positive, the electrode wire 11 and the heating element wire 9 A high voltage is applied to the surface, the neon lamp 13 lights up, and an electric signal is applied to the gate of the thyristor 12, and when (a) is positive, (a) - (6) - (
A current of 9+-(b) flows and the heating element wire 9 generates heat, heating the electric blanket. When (b) is positive, no current flows due to the nature of cyrisk.

Next, when the temperature of the electric blanket rises, the impedance of the temperature-sensitive material decreases, and accordingly, only a low voltage is applied to the electrode wire 11 and the heating element wire 9 (instead, the protective resistor 16
A high voltage is applied to the series circuit of volume 15 and volume 15). Therefore, the voltage applied to the neon lamp 13 is also lowered, the lighting start time (phase) is shifted, and the time (phase) at which the thyristor 12 is turned on is shifted, so that the heat generation time is shortened. Therefore, the temperature of the electric blanket can be kept constant at the set temperature without increasing the temperature that much.

The temperature of the electric blanket can be maintained at a desired temperature by adjusting the volume 15.

In addition, a thermistor 17 whose resistance value changes depending on the room temperature is installed in parallel with the temperature-sensitive material 10 for detecting and controlling the temperature of the electric blanket, and when the room temperature drops, the temperature of the electric blanket is slightly increased (0.000% for a 1°C change in the room temperature). When the room temperature becomes high, the temperature of the electric blanket can be lowered a little.

Figure 3 shows the temperature distribution of human body temperature during sleep when no heating equipment is used in the winter, and the part of the body from the shoulders to the buttocks, which is usually close to the heart, is 35 to 3.
The temperature is 6 degrees Celsius, but it is gradually decreasing from the shins to the toes.
The temperature at the tips of the feet usually drops to around 33°C. Humans feel cold when their feet get cold while they sleep.

As shown in FIG. 3, an efficient heating device that warms the feet, where the body temperature drops the most, provides the warmest feeling. However, according to the conventional example shown above, the room temperature thermistor 17, which increases the temperature of the electric blanket when the room temperature drops, has an effect on the entire temperature of the electric blanket, and when the room temperature drops, the temperature of the toes of the feet decreases. Although this will give you a comfortable warmth, your chest and abdomen will become warmer and uncomfortable, making it uncomfortable to sleep.

In other words, the body temperature of the chest and abdomen is around 36 degrees Celsius, and the body temperature does not change much even when the room temperature drops, but when the room temperature drops, the body temperature of the toes of the feet is influenced by the drop, causing the body temperature to wake up in the morning due to the cold. Therefore, the toes of the feet can be made more comfortable by raising the temperature of the electric blanket slightly due to the influence of the room temperature thermistor 17, but the body temperature of the chest and abdomen does not drop that much, so increasing the temperature due to the influence of the room temperature thermistor 17 will only make the body feel more comfortable. It becomes hot and uncomfortable to sleep on.

OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned conventional problems, and provides a fabric heating device for sleeping that makes sleeping comfortable even when the room temperature changes by limiting the influence of the room temperature thermistor only to the foot side of the electric blanket. It is something to do.

Structure of the Invention The heating element of the electric blanket is divided into two blocks, one for the legs and one for the chest, and the temperature is controlled separately for each block, and the temperature of the electric blanket is changed in response to changes in the room temperature in the blocks on the legs side. This configuration is characterized by the provision of a room temperature thermistor. By adopting the above configuration, even if the room temperature drops, the temperature of the electric blanket increases only at the feet, which eliminates the discomfort of sleeping when the chest area is heated, making it possible to provide comfort. .

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

Reference numeral 21 in FIG. 4 is an electric blanket body, inside which a chest side heater 22 is placed on the chest side and a foot side heater 23 is placed on the foot side.
The pitch of each heater is such that the heaters 23 on the foot side are densely arranged.
The chest side heaters 22 are arranged so as to be sparse. 2
4 is a cord port for connecting the foot side heater 23 and the chest side heater 22 to a power source, and is electrically connected to the temperature control controller 26 of the electric blanket via a cord 27 and a connector 25. Reference numeral 28 shows a person using an electric blanket, and the person 28 sleeps wearing an electric blanket such that the foot part of the person 28 is placed on the foot side heater 23 and the chest area of the person 28 is placed on the chest side heater 22.

The circuit will be explained based on Fig. 5.
The circuit No. 3 and the circuit of the chest side heater 22 are just two circuits that are the same in parallel except that the room temperature thermistor 33 is attached to the foot side circuit 31.
The following explanations will be given for both at once. Both the foot heater 23 and the chest σ reheat 22 are constructed by placing a heating element wire 34 and an electrode wire 36 close to each other, and using a glass thermistor 35 whose main component is vinyl chloride 1, which has a negative temperature coefficient of resistance. A heater is constructed by interposing the two. 37 is a constant voltage discharge element connected in series with the electrode wire 36 and is composed of a neon lamp, etc. 38 is a cyrisk connected in series with the heating element wire 34, and the gate is connected to the constant voltage discharge element 37. . 39 and 40 indicate a volume and a protective resistor, both of which are connected in series with the electrode wires and with each other in series.

41 indicates a resistor connected between the gate and cathode of the SIRISK.

Note that the series circuit of the cyrisk a8-heating element wire 34 and the constant voltage discharge element of the protective resistor 40-volume 39-electrode wire 36 are connected in parallel to each other. Note that the room temperature interlocking thermistor 33 attached to the foot-side circuit 31 is configured to be parallel to the plastic thermistor constituting the foot-side heater 23. 41 indicates resistance.

The circuit shown in FIG. 5 is just two identical circuits in parallel except that the room temperature thermistor 33 is attached to the foot circuit 31 as described above, so both circuits are connected to the chest circuit at the same time. To explain below, since the temperature of the electric blanket is low at the beginning of energization, the impedance characteristic of the glass thermistor 35 is high and when θ is positive, a high voltage is applied between the electrode wire 36 and the heating element wire 34, resulting in a constant voltage discharge. When the element 37 is energized, an electric signal is applied to the gate of the Cyrisk 38, and when θ is positive, C1-35
-34-g and current flow, the heating wire 34 generates heat and heats the electric blanket.When 1 is positive, electricity does not flow due to the nature of the thyristor 3B.

Next, when the temperature of the electric blanket increases, the impedance of the plastin thermistor 35 decreases, and accordingly, only a low voltage is applied between the electrode wire 36 and the heating element wire 34 (instead, the protective resistor 4o and the volume controller 39 high voltage applied to the series circuit).

Therefore, the voltage applied to the constant voltage discharge element 37 is also lowered, the time (phase) at which conduction starts slips, and the time (phase) at which the Cyrisk 38 is triggered passes, reducing the heat generation time, so that the temperature of the electric blanket decreases. It is possible to keep the temperature constant at the set temperature without increasing it much.

Temperature 2 of the electric blanket A desired temperature can be obtained by adjusting the volume 39 to keep it constant at the desired temperature. Also, in the foot side circuit 31, a glass thermistor 35 for detecting and controlling the temperature of the electric blanket is connected in parallel, and a thermistor whose resistance value changes depending on the room temperature, that is, a room temperature thermistor 33, slightly raises the temperature of the electric blanket when the room temperature drops. ,
(When the room temperature changes by 1'C (7), the temperature of the electric blanket changes by about 0.25°C.) If the room temperature becomes high, the temperature of the electric blanket can be lowered a little.

Effects of the Invention (1) As described above, the present invention divides the heating element of an electric blanket into a foot-side heating element and a chest-side heating element, and controls the temperature of each using a separate temperature control circuit. Because the temperature control circuit is equipped with a room temperature thermistor that slightly changes the temperature of the electric blanket in response to changes in the room temperature, the user's feet can be kept warm even when the room temperature drops in the morning. To provide a comfortable sleeping heater that increases the temperature only on the side and eliminates the discomfort of sleeping that occurs when the chest side becomes hot.

(In the second embodiment, the room temperature thermistor is installed in the foot-side temperature control circuit where the heaters are arranged in a dense zigzag pattern, so its influence is large. In other words, the room temperature thermistor is installed in the control circuit where the heaters are arranged sparsely. If the temperature of the electric blanket changes, the thermistor will work due to changes in the room temperature, and even if the temperature of the electric blanket changes, the heaters are sparse and the user will not be able to fully feel the change.However, in the case of this example, the heaters are placed closely together. However, since a room temperature-linked thermistor is provided in the foot-side temperature control circuit, the influence of the room temperature thermistor is immediately apparent, resulting in good room temperature sensitivity.

[Brief explanation of drawings]

Figure 1 is a configuration diagram of a conventional electric blanket, Figure 2 is a circuit diagram of a conventional electric blanket, Figure 3 is a temperature distribution diagram of body temperature during sleep when no heating equipment is used in winter, and Figure 4 The figure is a block diagram of an electric blanket according to an embodiment of the present invention, and FIG. 5 is a circuit diagram of the electric blanket. 21... Electric blanket body, 22... Chest side heater, 23... Feet side heater, 24... Cord opening, 25... Connector, 26...・Temperature control controller, 27... Code, 28...
...Human, 31... Foot side circuit, 32...
・Chest side circuit, 33... Room temperature thermistor, 34...
...Heating element wire, 35...Plastic thermistor, 36...Electrode wire, a7...Constant voltage discharge element, 38...Sirisk-139...Volume, 40 ...protective resistance, 41...resistance. Figure 1 Figure 2 Figure 3 Appeasement Figure 4

Claims (2)

[Claims] (1) Separate heating elements are placed at the feet and chest, and the temperature is controlled separately by dividing the blocks into two blocks, and the temperature control circuit on the feet side has a room temperature that can control the temperature according to changes in the room temperature. Cloth heating device for sleeping equipped with a thermistor. (2) The foot side heating elements are arranged closely, the chest side heating elements are arranged sparsely, and a room temperature thermistor is provided in the foot side temperature control circuit incorporating the foot side heating elements. Cloth heating device for sleeping as described in section.