JPS6366882A - Electric blanket - Google Patents

Abstract

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

Description

[Detailed description of the invention] Industrial applications The present invention relates to an electric blanket.

2. Description of the Related Art Conventionally, this type of electric blanket has an electric heater 1 and a temperature detection means 2 for detecting the temperature of the electric heater 1, as shown in FIG.
A blanket body 3 is provided with a temperature setting means 4 for setting the temperature of the electric heater, and energization to the electric heater 1 is controlled based on the temperature detected by the temperature detection means 2 and a signal from the temperature setting means 4. A control means 8 was also provided. In addition to the above configuration, as shown in FIG.
Some devices include a skin for setting a set value of I temperature and g temperature determining means 10 (for example, Japanese Patent Laid-Open No. 101895/1989). According to the former configuration, when the user sets the temperature using the temperature setting means 4, the control means 8 has the effect of controlling the current supply to the electric heater 1 so that the set temperature is achieved. In the latter case, when the skin temperature is set, the skin temperature is detected by the skin temperature detecting means 9 that is in contact with the human body, and the energization of the electric heater 1 is controlled so that the skin temperature reaches the set value.

Problems to be Solved by the Invention However, the above-mentioned system has the following problems. In other words, if you go to bed with the same high temperature setting as when preheating, or if you switch the electric heater, skin, and evening temperature settings when you go to bed, but if you set them incorrectly, it will be too cold and you will not be able to get a good night's sleep. It had such problems.

Therefore, the present invention solves such conventional problems and automatically sets the upper and lower temperature limits of the electric heater that keeps the bed at an appropriate temperature, and energizes the electric heater so that the temperature is always within the range. To achieve this object, the present invention provides an electric heater and a method for controlling the temperature of the electric heater. A blanket body provided with a temperature detection means for detecting temperature, a temperature setting means for setting the temperature of the electric heater, a metabolic amount calculation means for calculating the metabolic rate of the user during sleep, and the metabolic amount calculation means temperature calculation means for calculating upper and lower temperature limits of the electric heater according to signals from the electric heater; and signals from the temperature detection means, the temperature setting means, and the temperature calculation means to energize the electric heater. 1) is provided with a control means for controlling the

The electric blanket of the present invention calculates the user's metabolic rate and then automatically calculates the upper and lower temperature limits of the electric heater to keep the bed at an appropriate temperature. do,
If the set temperature of the electric heater is within the range of the upper limit value and the lower limit value, energization to the electric heater is controlled so that the set temperature is reached, and the set temperature of the electric heater is outside the range of the upper limit value and the lower limit value. In this case, it has the effect of controlling the supply of electricity to the electric heater so that the temperature of the electric heater is within a certain range between the upper limit and the lower limit.

Example Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a block diagram of an electric blanket in a first embodiment of the present invention. In the figure, 1 is an electric heater, 2 is a temperature detection means for detecting the temperature of the electric heater 1, and 3 is a blanket body in which the electric heater 1 and the temperature detection means 2 are disposed. 4 is a temperature setting means for setting the temperature of the electric heater 1; 5 is a metabolic rate calculating means for calculating the user's metabolic rate during sleep; 6 is an upper limit for the temperature of the electric heater 1 based on a signal from the metabolic rate calculating means 5. Temperature calculation means for calculating the value and lower limit value, 7
is a timer 7a, a comparison section 7b which is activated by the timer 7a and compares a signal from the temperature setting means 2 and a signal from the temperature calculation means 6, and a signal from the temperature detection means 2 and the comparison section 7b to the electric heater 1. A control unit 7c that controls energization of
The control means consists of:

In the above configuration, when the user's metabolic rate is calculated by the metabolic rate calculating means 5, the upper limit (direct and lower limit) of the temperature of the electric heater 1 is set by the temperature calculating means 6 from the flash limit shown in FIG. In the comparison section 7b of the control means 7, after the power is turned on, the timer 7a
Therefore, for a certain period of time, the set temperature set by the temperature setting means is output as is to the control section 7c, and after a certain period of time,
The temperature setting means 4 and the temperature calculation means 6 compare the signals to see if the set temperature of the electric heater 1 is within the range between the upper limit and the lower limit. If it is within the range, the set temperature is output to the control unit 7b, and if the set temperature of the electric heater 1 is outside the range between the lower limit and the lower limit, it is set within one range of the upper limit and the lower limit. Outputs a certain value to the control unit. In the control section 7c, energization to the electric heater 1 is controlled based on the difference between the signals from the temperature detection means 2 and the comparison section 7b.

The above action automatically calculates the upper and lower temperature limits of the electric heater to keep the bed at an appropriate temperature based on the user's metabolic rate, and controls the energization so that the temperature is always within that range. You can get a good night's sleep without the problems of sleeping at the same high temperature setting as when preheating, or being too hot or too cold due to incorrect settings.

Next, the temperature calculation means in the second embodiment of the present invention is
This will be explained based on the diagram. What is different from the above embodiment in FIG. 3 is that the temperature calculation means 6 operates the electric heater 1 based on signals from the sleep stage determination section 6a that determines the sleep stage, the sleep stage determination section 6a, the metabolic rate calculation means 573h, etc. The first calculating section 6b calculates the upper and lower limits of the temperature.

During sleep, metabolic rate is said to change depending on the sleep stage (for example, 5apiro et al. (1984).
) ).

Therefore, in the above configuration, when the sleep stage is determined by the sleep stage determination section 6a, the metabolic rate is corrected in the first calculation section 6b as shown in FIG. 4 according to the sleep stage at that time,
The amount of heat generated is set based on the relationship shown in FIG. Therefore, fine-grained energization control according to the sleep stage is possible.

A temperature calculating means in a third embodiment of the present invention will be explained based on FIGS. 5 and 6. The difference in FIG. 5 from the above embodiment is that the temperature calculation means 6 uses a room temperature detection section 6C that detects the room temperature, and a signal from the metabolic rate calculation means 5 and a signal from the room temperature detection section 6C to operate the electric heater 1. It consists of a second calculation section 6d that calculates the upper and lower temperature limits.

In the above configuration, when the room temperature is detected by the room temperature detection section 6c, the second calculation section 6d calculates the upper and lower limits of the temperature of the electric heater 1 according to the room temperature at that time by the opening shown in FIG. be done. For this reason, fine-grained energization control according to the room temperature is possible.

Effects of the Invention As described above, according to the electric blanket of the present invention, the upper and lower limits of the calorific value of the electric heater for keeping the bed at an appropriate temperature are automatically calculated from the user's metabolic rate, and the upper and lower limits of the calorific value of the electric heater are always kept within that range. Since the power supply is controlled to maintain the temperature within the room, you can enjoy a comfortable night's sleep without the problems of sleeping at the same high temperature setting as when preheating when you go to bed, or being too hot or too cold due to incorrect settings. .

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an electric blanket in an embodiment of the present invention, Fig. 2 is a diagram showing the relationship between the temperature of an electric heater and metabolic rate, and Fig. 3 is a temperature calculation in a second embodiment of the invention. A block diagram of the means, FIG. 4 is a diagram showing the relationship between metabolic rate and sleep stage, FIG. 5 is a block diagram of the temperature calculation means in the third embodiment of the present invention, and FIG. 6 is a diagram showing the relationship between the temperature of the electric heater and Figures 7 and 8, which show the relationship between metabolic rate and room temperature, are block diagrams of conventional electric blankets. 1...Electric heater, 2...Temperature detection means, 3...Blanket body, 4...Temperature setting means, 5...Metabolism Quantity calculation means, 6...
Temperature calculation means, 6a...Sleep stage determination section, 6b
...First calculation section, 6C...Room temperature detection section, ad...Second calculation section, End...Control means, 7a... ...Timer, 7b...
Comparison section, 7C... Control section, 8... Control means, 9... Skin, skin temperature detection means, 10...
...Skin temperature setting means, 11... Control means. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 2 Figure 3 Figure 4 Figure 5 Figure 7

Claims (4)

[Claims] (1) A blanket body equipped with an electric heater and a temperature detection means for detecting the temperature of the electric heater, a temperature setting means for setting the temperature of the electric heater, and a metabolism for calculating the user's metabolic rate during sleep. amount calculation means, temperature calculation means for calculating upper and lower temperature limits of the electric heater based on signals from the metabolic amount calculation means, and signals from the temperature detection means, the temperature setting means, and the temperature calculation means. An electric blanket comprising: a control means for controlling energization to the electric heater. (2) The control means includes a timer, a comparison section that is activated by the timer and compares a signal from the temperature setting means and a signal from the temperature calculation means, and a The electric blanket according to claim 1, comprising a control section that controls energization to the heater. (3) The temperature calculation means includes a sleep stage determination unit that determines the sleep stage, and a first calculation that calculates an upper limit value and a lower limit value of the temperature of the electric heater based on signals from the sleep stage determination unit and the metabolic rate calculation unit. The electric blanket according to claim 1, comprising: (4) The temperature calculation means includes a room temperature detection section that detects temperature;
The electric blanket according to claim 1, which comprises the room temperature detection section and a second calculation section that calculates the upper and lower temperature limits of the electric heater based on the signals from the metabolic rate calculation means.