JPH0782901B2 - Bedtime warmer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sleeping warming tool such as an electric blanket.

Configuration of Conventional Example and Problems Thereof FIG. 1 is a configuration diagram of an electric blanket showing a conventional example.
Is a blanket body, 2 is a heater wire wired to the blanket body 1, 3 is a controller having a control device for controlling power supply to the heater wire 2 and a power supply circuit, and 4 is attached to the controller 3. It is a temperature control knob. Further, 5 is wired near the heater wire 2 and the main body 1
It is a detection line for detecting the temperature of. FIG. 2 is a diagram showing the temperature of the blanket body in the section taken along the line AA ′ in FIG. 1 when the blanket body 1 of the above-mentioned conventional example is inserted between the standard comforter and the mattress and the energization is controlled. As shown in the figure, the blanket body temperature changes up and down depending on the room temperature, for example, at room temperature of 10 ° C and 0 ° C. This is because the detection line 5 has to be wired in the vicinity of the heater line 2 for the sake of safety.
By detecting the temperature close to the temperature of the heater wire 2 without detecting the average blanket body temperature, the blanket body temperature is lowered particularly between the heaters when the room temperature is lowered.

3 is a state of use of the electric blanket in the conventional example, 6 is a comforter, 7 is a blanket, and 8 is a human body sleeping and warming by the blanket body 1. FIG. 4 shows the first view when sleeping and collecting heat as shown in FIG.
It is a figure which shows the blanket main body temperature in the AA 'cross section in a figure, and a blanket main body temperature changes with room temperature 10 degreeC, 5 degreeC, and 0 degreeC as shown in a figure. In other words, the temperature of the blanket body during practical use is more affected by the heat generated by the human body 8 than the heater wire 2, and has no distribution for each wiring pitch. The decrease in the temperature of the blanket body due to the decrease in room temperature is more remarkable at the feet because there is a distribution in the heat radiation of the human body as shown in FIG. For this reason, the skin temperature is lowered in the lower limbs of the human body, which is very unpleasant to the user. Further, in order to prevent this, when the power supply to the heater wire 2 is controlled to increase as the room temperature decreases, the blanket body temperature becomes a in FIG.
℃) to b (room temperature 0 ℃). As a result, the temperature drop at the feet can be prevented, but on the contrary, the temperature rises at the chest, which makes the chest uncomfortable.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a warming tool that can always sleep comfortably even when the room temperature changes.

To achieve this object, the present invention is configured such that the heat generation densities of the heater wires are made different between the foot side and the chest side of the main body, and the set temperature by the control device is changed according to the output of the room temperature detector. It was done.

With this configuration, it is possible to maintain the body temperature and the bed temperature substantially constant and substantially uniform even when the room temperature changes.

Description of Embodiments An embodiment of the present invention will be described below with reference to FIGS.

FIG. 6 is a configuration diagram of an electric blanket in an embodiment of the sleeping warming tool of the present invention. The same reference numerals as those in FIGS. 1 and 3 are the same and therefore the description thereof will be omitted. A room temperature detector 9 detects the room temperature and sends its output to the controller 3.

FIG. 7 is a control block diagram in the above embodiment.
Is a volume resistor whose resistance value changes in association with the temperature control knob 3, and 12 is a power supply circuit which receives an ON / OFF signal from the voltage comparator 11 and turns ON / OFF the power supply.

In the above configuration, the voltage comparator 11 compares the signal from the detection line 5 for detecting the temperature of the main body 1 with the combined signal of the room temperature detector 9 and the volume resistor 10, and turns on the power supply circuit 12.・ Send OFF signal. That is, by properly selecting the temperature characteristic of the room temperature detector 9, the set temperature of the main body 1 can be increased as the room temperature is lowered.

FIG. 8 shows B- in FIG. 6 when the main body 1 in the above embodiment is inserted between the standard comforter and the comforter and the energization is controlled.
It is the figure which showed the blanket main body temperature of the B'line cross section. As the set temperature of the main body 1 rises (t → T) as the room temperature decreases, the power supply to the heater wire 2 increases and the temperature distribution changes as shown in the figure. When the room temperature was 10 ° C, the chest temperature t ₁ , the abdominal temperature t ₂ , and the foot temperature t ₃ were changed to the room temperature 0 ° C.
Then, it changes to chest temperature T ₁ , abdominal temperature T ₂ , foot temperature T ₃ ,
The width of the change is larger toward the feet, and (T ₁ −t ₁ ) <(T ₂ −
The relationship is t ₂ ) <(T ₃ −t ₃ ). In other words, the temperature gradient from the chest side to the foot side increases with decreasing room temperature,
The temperature gradient (T ₃ −T ₁ ) / L at the temperature of 0 ° C. is larger than the temperature gradient (t ₃ −t ₁ ) / L at the time of. (However, L is the distance from the chest to the feet.) This is because the heater wire pitch at the feet is denser as compared to the chest, as shown in FIG. 6, so that the amount of heat generated per unit area when the power supply increases This is because the increase is particularly large on the foot side.

Further, FIG. 9 is a diagram showing the temperature of the blanket body when the electric blanket in the above-mentioned embodiment is used as in FIG. 3 as in the conventional example. As the room temperature decreases from 10 ° C to 0 ° C, the power supply to the heater wire 2 increases as described above, but the heat release from the human body decreases at room temperature. It is possible to prevent a decrease in the temperature of the blanket body at the feet without causing the occurrence of heat, and to form a substantially uniform and substantially constant temperature distribution although it is slightly higher at the chest and lower at the feet. For this reason, even when the room temperature drops, there is no cooling of the feet and an excessive increase in temperature at the chest, it is possible to prevent the accompanying dry throat and chest pain that are common in old people, and the effect of always being able to sleep comfortably is obtained. Play.

In addition, in the above-described embodiment, the configuration of an electric blanket is described as a sleeping warming tool, but the same effect can be obtained with a configuration of an electric squeeze blanket, a bed pad, or the like. The same effect can be obtained not by the so-called two-wire system in which the detection lines 5 are separated but also by a single-line system using a heater wire in which a temperature detection layer is integrated, and the present invention is not limited to the above-mentioned embodiment.

EFFECTS OF THE INVENTION As described above, according to the bedtime warming tool of the present invention, the following effects can be obtained.

(1) When the room temperature decreases, it acts to promote head cold foot heat, and when the room temperature decreases, the amount of heat generated at the feet where the human body radiates less is particularly increased, and the blanket at the feet does not cause excessive temperature rise at the chest. There is a peculiar effect that the temperature drop can be prevented and a uniform and constant temperature distribution in the bed is formed.

(2) Further, since the heater wire is composed of one heater wire, the average temperature over the entire length of the heater wire from the chest to the feet is always controlled to be constant, and the stability is maintained even when the room temperature is extremely lowered. Is very high.

(3) Further, when the room temperature rises, the set temperature of the entire blanket automatically lowers, so that comfortable sleeping can be always realized and energy saving can be achieved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an electric blanket in a conventional example, FIG. 2 is a diagram showing a temperature distribution in a non-practical state in the conventional example,
FIG. 3 is a diagram showing a usage state in the above conventional example, FIG. 4 is a diagram showing a temperature distribution in a practical use in the above conventional example, and FIG. 5 is a diagram showing a temperature distribution in a practical use in another conventional example. FIG. 6 is a block diagram of an embodiment of the sleeping warming tool of the present invention, and FIG. 7 is a control block diagram of the above embodiment.
FIG. 8 is a diagram showing a temperature distribution in a non-practical use in the above embodiment, and FIG. 9 is a diagram showing a temperature distribution in a practical use in the above embodiment. 1 ... Main body, 2 ... Heater wire, 3 ... Controller, 5
…… Detection line, 9 …… Room temperature detector, 10 …… Volume resistance,
11 …… Voltage comparator, 12 …… Power supply circuit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinichi Endo 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Kunio Kizen, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Kunio Ogita 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Toshio Watanabe 7-48 Nakayama, Sendai City, Miyagi 301 (56) References Microfilm (JP, U) Application No. 54-123620 (Application No. 56-41312) taken from the specification and drawings attached to the application No. 50-99538 (Application No. 52-14017) No.), a microfilm (JP, U) of the details and drawings attached to the application.

Claims (1)

[Claims] 1. A main body, one continuous heater wire in which a wiring pitch to the main body is sparsely wired on the chest side and densely on the foot side, and the heater so that the average temperature of the main body becomes a set temperature. A control device for controlling power supply to the wire and a room temperature detector for detecting room temperature are provided, and the set temperature is increased when the room temperature detected by the room temperature detector decreases, and the room temperature detector increases when the room temperature rises. A sleeping warming tool in which the set temperature is lowered and the width of the body temperature change in response to room temperature changes is gradually increased from the chest side to the foot side in any case.