JPS62291880A - Electric blanket - 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] 3. Detailed description of the invention Industrial applications The present invention relates to an electric blanket.

2. Description of the Related Art A conventional electric blanket of this kind, as shown in FIG. A temperature setting means 5 for setting the temperature, a switch 11 for starting preheating, a timer 12 for setting the preheating time, and a signal from the timer 12, the temperature detected by the temperature detection means 2, and a signal from the temperature setting means 5. The electric blanket was equipped with a control means 11 for controlling the supply of electricity to the electric heater 1. With this configuration, the switch 11 is turned on, the preheating time is set to +/- by the timer 12, and the temperature is automatically returned to the appropriate temperature setting. (For example, Japanese Utility Model Publication No. 48-8176.) Problems to be Solved by the Invention However, in the method using a timer as described above, it is necessary to turn on the preheating switch and set the timer. It takes a lot of time.

Also, you do not necessarily go to bed at the time set on the timer, and if you go to bed earlier than the time set on the timer, the temperature will remain set at a high temperature, so you will have to turn off the timer. If you fall asleep without turning off the timer, the temperature of the blanket will be too high, making you feel hot and uncomfortable.

The present invention aims to solve this problem, and aims to automatically switch from preheating to sleep temperature settings, and to automatically stop energization when waking up.

Means for Solving the Problems In order to solve the above problems, the electric blanket of the present invention includes an electric heater, a temperature detection means for detecting the temperature of the electric heater, and a physical quantity detection means for detecting a physical quantity of the blanket body. a blanket body provided with a blanket body, a temperature setting means for setting the temperature of the electric heater, and a room temperature detection means for detecting the room temperature;
a storage unit that stores the signal from the physical quantity detection means and outputs it after a certain period of time; and a storage unit that determines a threshold value in proportion to the signal from the room temperature detection unit, and outputs the signal from the physical quantity detection unit and the storage unit. bedtime/wake-up determination means for determining whether to go to bed or wake-up based on the threshold value; and setting change for changing the set temperature of the electric blanket based on signals from the temperature setting means and the bedtime/wake-up determination means. and a control means for controlling energization to the electric heater based on the difference between the signal of the temperature detection means and the signal of the mJ setting change means.

Effects According to the present invention, with the above-described configuration, the electric blanket is energized at a preset high temperature during preheating after the power is turned on. When a person enters the bed, the difference between the physical quantity a certain time ago and the physical quantity at that time reaches a threshold determined in proportion to the room temperature.
It is determined that the patient has entered the hospital. When it is determined that the person is going to bed, the temperature is automatically switched from the high temperature setting during preheating to the temperature setting previously set by the person entering the bed, and the climate in the bed is set to be comfortable and easy to fall asleep. After going to bed, electricity is applied at the temperature set by the person in advance, but when the person wakes up, it is determined that the person has woken up based on the difference between the physical quantity a certain time before and the physical quantity at that time, and a threshold value determined from the room temperature. , automatically stops powering the blanket.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4.

In FIG. 1, an electric heater 1, a temperature detection means 2 for detecting the temperature of the electric heater 1, and a heat flow sensor 3 for detecting the heat flow rate of the blanket body are arranged in the blanket body 4, and the A temperature setting means 5 for setting the temperature of the heater 1, a room temperature detection means 6 for detecting the indoor temperature, a storage section 7 for outputting the signal from the heat flow sensor 3 after a preset period of time, and the room temperature detection means 6. bedtime/wake-up determination means that determines a threshold value in proportion to the signal from the heat flow sensor 3 and compares the signal from the heat flow sensor 3 with the signal from the storage unit 7 based on the threshold value to determine whether to go to bed or wake up; 8 and
a setting changing means 9 for changing the temperature setting of the electric blanket based on the signals from the temperature setting means 5 and the bedtime/wake-up determining means 8; a signal from the temperature detecting means 2 and a signal from the setting changing means 9; This electric blanket is comprised of a control means 1o for controlling the supply of electricity to the electric heater 1 in accordance with the difference between the two.

With the above configuration, when you start energizing the electric blanket, will it preheat at a high temperature setting? The current heat flow is compared with the heat flow a predetermined time ago, and it is determined whether to go to bed or wake up based on this difference and a threshold determined according to the room temperature. The operation of bed admission determination will be explained based on FIGS. 2 to 41. As shown in Fig. 2, the heat flow at time tl is H(tl), the heat flow at time tl is H(t), and the threshold value for determining whether to go to bed or wake up is D (this threshold value is shown in Fig. 3). (proportional to room temperature), and the preset constant time is ΔT=t−t1.

If the current time is t, then the heat flow rate H(
tl) and the current heat flow rate H(t) is greater than or equal to D, it is determined that the patient has entered the bed. In other words, D>IH(t)−H(t
l) If l, it is determined that the person has gone to bed, and the high temperature setting during preheating is changed to the temperature setting previously set by the person entering the bed, and the environment in the bed is set to make it easier to fall asleep.

Also, when you wake up, as when you go to bed, the heat flow rate before a certain time (△T')) ((t'l) and the heat flow rate H(t') at that time)
If the difference is greater than or equal to D', it is determined that the person has woken up. That is, if D'>lH(e')-H(t'1)l, it is determined that the person has woken up, and the electricity to the electric blanket is automatically stopped.

Therefore, there is no need to manually change the temperature setting from the preheating setting to the sleeping setting when going to bed, or turning off the electricity to the electric blanket when waking up, and it is also easy to switch to the appropriate temperature setting. You can sleep comfortably and with peace of mind without worrying about forgetting to sleep and waking up in the middle of your sleep because of the heat.

Effect of the invention According to the electric blanket of the present invention, the following effects can be obtained.

(1) When you turn on the power, it will automatically start up with a high temperature setting,
When a person goes to bed, the temperature setting automatically switches to the appropriate temperature setting for sleeping, so there is no need to manually reset the setting scale. If you wake up, you won't have any trouble, and you can sleep in peace and comfort.

? ) When you wake up, the power to the electric blanket automatically stops, so there is no need to turn it off.

(3) Since the threshold value of the physical quantity is determined according to the room temperature, the accuracy of determining whether to go to bed or wake up is high.

[Brief explanation of drawings]

Figure 1 is a block diagram of an electric blanket according to an embodiment of the present invention, Figure 2 is a diagram showing heat flow fluctuations when entering bed, Figure 3 is a diagram showing the relationship between room temperature and threshold value, and Figure 4 is the same diagram. FIG. 5, which is a flowchart of an electric blanket, is a block diagram of a conventional example. 1... Electric heater, 2... Temperature detection means, 3... Heat flow sensor, 4... Electric blanket body, 5... Temperature setting means, 6...
・Room temperature detection means, 7... Calculation storage section, 8...
. . . bedtime/wake-up determination means, 9 . . . setting change means, 10 . . . control means. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Map Ward W Type 7C Wang Zheng Ward Cough Wipe - Castle Figure 4

Claims (6)

[Claims] (1) A blanket body including an electric heater, a temperature detection means for detecting the temperature of the electric heater, and a physical quantity detection means for detecting a physical quantity of the blanket body, and a temperature setting means for setting the temperature of the electric heater. a room temperature detection means for detecting indoor temperature; a storage section that stores a signal from the physical quantity detection means and outputs it after a certain period of time; a signal from the room temperature detection means, a signal from the physical quantity detection means, and the memory. bedtime/wake-up determination means for determining whether to go to bed or wake-up based on a signal from the unit; setting change means for changing the temperature setting of the electric blanket based on signals from the temperature setting means and the bedtime/wake-up determination means; An electric blanket comprising: a control means for controlling energization of the electric heater based on a difference between a signal from the temperature detection means and a signal from the setting change means. (2) The electric blanket according to claim 1, wherein the physical quantity detection means is a temperature sensor. (3) The electric blanket according to claim 1, wherein the physical quantity detection means is a temperature sensor. (4) The electric blanket according to claim 1, wherein the physical quantity detection means is a heat flow sensor. (5) Claim 1, wherein the storage unit is a delay circuit;
The electric blanket according to item 2, 3 or 4. (6) The bed entry/wake-up determination means determines a threshold in proportion to the signal from the room temperature detection means, and enters bed when the difference between the signal from the physical quantity detection means and the signal from the storage unit is equal to or greater than the threshold. The electric blanket according to claim 1, which determines whether to go to bed or wake up.