JPS60101895A - Sleeping heat collecting implement - 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 the Invention The present invention relates to heating devices for sleeping such as electric fence blankets and electric bed blankets.

Conventional structure and its problems In conventional electric blankets, the temperature rise due to the heat generated by the heater is detected as a temperature signal by temperature detection wires placed on the entire surface of the electric blanket, and the temperature is controlled by controlling the heater current using the temperature control circuit. was. Furthermore, the temperature of the electric blanket was controlled by a variable resistance dial provided in the temperature control circuit. Therefore, people often feel uncomfortable because they are too hot or too cold due to inappropriate temperature settings on the dial, changes in outside temperature, drafts in the bedroom, and the weight and thickness of bedding. Also, if it's too hot, your body muscles will get tired, you'll sweat, your throat will dry out, and you'll feel even more uncomfortable.

FIG. 1 shows a configuration diagram of a conventional electric blanket.

In the figure, a string heater (2) and a temperature detection line (3) are provided on the blanket body (1), and a temperature signal from the temperature detection line (3) is added to a temperature control circuit provided in a control box (41). The electric blanket (1) is controlled by controlling the electricity supply to the heater (2).
temperature is controlled.

Therefore, in this conventional electric blanket, when a person sleeps, the temperature detection line (3) detects both the temperature of the heater (2) and the temperature of the person as the average temperature of the entire blanket. The temperature detection wire cannot detect a difference of 1 to 2 degrees Celsius between the human body temperature by wearing a blanket or placing a regular blanket between the electric blanket and the person, and most of the time it is simply the heat generated by the heater. The drawback is that it merely detects and controls the temperature.

OBJECTS OF THE INVENTION The object of the present invention is to eliminate the discomfort of the conventional example, detect the temperature of the human skin, and obtain a more comfortable sleeping warming device.

Structure of the Invention The present invention provides a heating device for sleeping having a heating circuit (hereinafter simply referred to as the heating device main body), in which a relay circuit for opening and closing the heater circuit is provided in the heater circuit, and a temperature control circuit is connected to the relay circuit. , the temperature control circuit includes a temperature sensor connected to the skin, a comparison circuit connected to the temperature sensor, and a comparison circuit that operates the relay circuit connected to the comparison circuit to compare whether the temperature is below or above a set temperature of the skin augmenter. When the temperature is below the set temperature, a high level signal from the comparator circuit activates the relay circuit to close and energize the heater circuit, and when the temperature is above the set temperature, a low level signal activates the relay circuit to energize the heater circuit. It is characterized in that it is configured to open the circuit and stop energization.

Description of examples FIG. 2 shows a configuration diagram of the sleeping warming device of the present invention.

In the figure, the same symbols as in FIG. 1 indicate the same parts. In the figure, 01) is a sleeper, 0 is a temperature control circuit, a control box with a built-in temperature control circuit, (14) is a temperature sensor,
(+31 indicates a lead wire.

In the present invention, a temperature sensor αa is attached to the sleeper's feet,
Connect lead wire 0■ to temperature control circuit α2.

FIG. 3 shows a humidity control circuit according to the present invention.

In the figure, Q is a transistor, Q2 is a comparator, Dl and D2 are diodes, Dz is a Zener diode,
C1 is a capacitor, RL is a relay, RLO is a relay contact, R1-R3 is a resistor, and ■R is a variable resistor.

The configuration and operation of the temperature control circuit of the present invention will be explained.

A DC power source is constituted by a series circuit of a diode D, a series circuit of a resistor R1, and a parallel circuit of a zener diode Dz and a capacitor C1.

The comparator Q2 compares the voltages at points a and b determined by the resistance value of the temperature sensor θX, the resistance value of the fixed resistor R2, and the values of the variable resistor VR and fixed resistor R8, and when the skin temperature is low, the comparator Q2 is set to a high level. Relay 1 connected to transistor Q, base input to conductive and collector connected
'(L is driven to close the contact RLO and energize the heater (2), and if the skin temperature becomes higher than the set temperature, the heater (2)
) works to stop energizing.

FIG. 4 is a diagram showing the skin temperature of the feet of a sleeper. (a) shows the temperature when an electric blanket is used, and (b) shows the temperature when a heating device is not used. As can be seen from this figure, the skin temperature of the feet is as low as 25°C immediately after going to bed, and as time passes under the futon, it rises as shown in (b) even without a heating device, but the normal body temperature The temperature did not rise to 36°C, indicating that he was unable to fall asleep due to cold feet.

Also, when using an electric blanket, the skin temperature of the feet quickly drops to 35 degrees Celsius.
It indicates that it is easier to fall asleep because it rises in the vicinity. The human body requires heat to be dissipated from the skin surface due to the human body's metabolic activities, so when the human body is heated to 36° C., heat dissipation to the outside is blocked and the person feels hot. The difference in skin temperature between the feeling of heat and the feeling of comfort is about 0.5°C.

The present invention detects this skin temperature directly with a temperature sensor,
It is designed to control the electricity supplied to the electric blanket, and as shown in Figure 4 (a), it can control the skin temperature to within ±0.5℃ around 35℃, making it very comfortable to use. You can get a good electric blanket.

□ In one embodiment of the present invention shown in Fig. 2, the temperature sensor α is provided at the tip of the foot where the skin temperature changes most easily, but 6- The skin of the top of the foot, lower leg, back, shoulder, hand, arm, etc. A similar comfortable temperature can be obtained by detecting temperature.

In addition, when attaching the temperature sensor 04) to the skin of the human body, using a tool to keep it warmer than necessary will prevent changes in skin temperature, so the temperature sensor 04) should be attached using a band-like cloth with rubber elasticity and large ventilation. It is better to fix it to the human body.

An example is shown in FIG. In the same figure, Q5) shows a net-like band made of woven rubber, and a moisture-sensitive element made of a thermistor that serves as a temperature sensor is fixed to the sole of the foot.

Effects of the Invention As described above, according to the configuration of the present invention, the temperature of the sleeping warmer is controlled by detecting the temperature of the human skin, so the person does not get too warm and sweat, and the person does not get tired. When the body gets cold, it is heated by 100% energization, which increases comfort by quickly warming the body.Also, when the body gets warm, the energization is immediately stopped, which is economical.

[Brief explanation of drawings]

Fig. 1 is a diagram showing a conventional sleeping warming device, Fig. 2 is a configuration diagram of an embodiment of the sleeping warming device of the present invention, and Fig. 3 is a diagram showing a temperature control circuit of the sleeping warming device of the present invention. Example diagram, Figure 4 is a diagram showing changes in skin temperature, (a) is when using an electric blanket,
(B) shows a curve when the heating device is not used, and FIG. 5 shows an example of fixing the temperature sensor of the sleeping warming device to the human body of the present invention. 1: Blanket body 2: Heater 3: Temperature detection wire 4, +2:
Controller box 11 = Human body 14: Skin temperature sensor Ql: Transistor Q2' Comparator Dl,
D2: Diode Dz: Zener diode R1-R5
: Resistance RL: Relay RLO: Contact ■R: Variable resistance Patent applicant Isao Abe, Patent attorney Matsushita Electric Industrial Co., Ltd. Figure 3

Claims (1)

[Scope of Claims] A relay circuit for opening and closing the heater circuit is provided in the heater circuit of a sleeping warming device body (hereinafter simply referred to as the warming device body) having a heater circuit, and a temperature control circuit is connected to the relay circuit. , the temperature control circuit includes a temperature sensor connected to the skin, a comparison circuit connected to the temperature sensor, and an amplifier connected to the comparison circuit that operates the relay circuit, and compares whether the temperature is below or above the temperature. When the temperature is below the set temperature, a high level signal from the comparator circuit operates the relay circuit to close and energize the heater circuit, and when the temperature is above the set temperature, a low level signal operates the relay circuit to close the heater circuit. A warming device for sleeping, characterized in that it is configured to open and stop energization. 1-