JPH0719640B2 - electric blanket - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to electric blankets, and in particular to control devices therefor.

2. Description of the Related Art A conventional electric blanket of this type has an electric heater 1 and a temperature detecting means 2 for detecting the temperature of the electric heater as shown in FIG.
A blanket body 3 in which is provided, a temperature setting means 4 for setting the temperature of the electric heater, a switch 9 for starting preheating, a timer 10 for setting the preheating time, a signal from the timer 10 and a temperature detecting means 2 The control means 8 for controlling the energization of the electric heater by the temperature detected in step 3 and the signal from the temperature setting means
It was an electric blanket with. With this configuration, the switch 9 is turned on, the preheating time is set by the timer 10, and the optimum temperature is automatically established. (For example,
8146 publication. ) Problems to be Solved by the Invention In the method using the timer as described above, it is necessary to turn on the preheating switch and set the timer, which is very troublesome. In addition, it is not always necessary to go to bed at the time when the timer is set, and if you enter the bed earlier than the time when the timer is set, the high temperature setting remains, so the timer must be turned off. If you go to sleep without turning off the timer, the blanket temperature will be too high and it will be uncomfortable. Also,
There is a problem that it is necessary to manually stop energizing the electric blanket when getting up, which is troublesome and often forgets to turn it off.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to automate the setting change at the time of entering the bed and to automatically stop the energization at the time of getting up.

Means for Solving the Problems In order to solve the above problems, the electric blanket of the present invention is a blanket body provided with a temperature detecting means for detecting the temperature of the electric heater of the electric heater, and the electric blanket of the electric heater. Temperature setting means for setting the temperature, a room provided in the electric blanket body,
A sound detecting means for detecting a sound generated in the bed or the human body, a judging means comprising a judging portion for judging whether the user enters or wakes up from the signal from the sound detecting means, the signal from the temperature setting means and the And a control unit for controlling energization to the electric heater based on a difference between the signal of the temperature detection unit and the signal of the setting change unit. is there.

Action According to the present invention, the electric blanket is energized at a high set temperature at the time of preheating after the power is turned on by the above-described configuration. When it is determined that the signal detected by the sound detecting means is due to the person entering the bed, the high temperature setting during preheating is set to the desired sleep temperature preset by the temperature setting means by the person entering the bed. The temperature is automatically switched, and the energization of the electric blanket is controlled thereafter at that set temperature. Further, if the sound caused by getting up is detected, the power supply is automatically stopped.

Example Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2, an electric heater 1 and a temperature detecting means 2 for detecting the temperature of the electric heater 1 are provided in a blanket body 3 according to the present invention.
Temperature setting means 4 for setting the temperature of the electric blanket, sound detecting means 5 attached to the head-side end of the electric blanket body 3 (a position where breathing sounds from the human body and heartbeat are easily detected), and the sound detecting means 5
A decision means 6 for receiving a signal from the decision means to decide whether to enter or wake up based on a frequency level such as a breathing sound or a heartbeat, a setting changing means 7 for changing the temperature setting by the signal from the judging means 6, and a setting changing means 7 And a control means 8 for controlling energization of the electric heater 1 in response to a signal from the temperature detection means 2.

As shown in FIG. 3, the judging means 6 comprises a filter section 5a for selecting only the frequencies of the breathing sound and the heartbeat from the signal subjected to frequency analysis by the sound detecting means 5, and the breathing sound and the heartbeat selected from the filter section 5a. And a determination unit 5b for determining whether to enter or wake up depending on the level of the frequency.

When energization is started with this electric blanket, preheating is started with a high temperature setting regardless of the preset temperature during sleep preset by the occupant by the temperature setting means 4. The frequency of the sound is constantly analyzed by the sound detecting means 5 attached to one end of the blanket body. When the occupant enters the bed after that, the level of the respiratory sound and the frequency of the heartbeat generated from the human body increases. When this frequency reaches a certain level or higher, it is judged by the judging means 6 that a person has entered the bed, and the setting changing means 7 receives this signal and the high temperature setting at the time of preheating causes the temperature setting means 4 to indicate that a person has entered the bed. It automatically switches to the preset temperature you set during sleep. Thereafter, the energizing amount is controlled by the control means at this set temperature. For this reason, you do not have to manually reset the setting scale, and you do not forget to switch to the proper temperature setting and fall asleep. I can sleep in a good state.

Further, even when the user wakes up, it is determined that he or she wakes up because the level of the frequency of the heartbeat and the breathing sound has dropped to a certain level or less, and the setting changing means 7 receives this signal and stops energizing the electric blanket. You can also let it. For this reason, when the user wakes up, the energization is automatically stopped, and it is unnecessary to manually stop the energization as in the conventional case, which saves the trouble.

Effects of the Invention According to the electric blanket of the present invention, the following effects can be obtained (1) When the power is turned on, it automatically starts up at a high temperature setting, and when it enters the bed, it is automatically switched to an appropriate temperature setting for sleep, There is no need to manually reset the setting scale, and you will not fall asleep because you forget to switch to the optimum temperature setting, and you will not be awake in the middle of sleep because it is hot, so you can feel safe and comfortable. I can sleep.

(2) Since the energization is automatically stopped when the user wakes up, there is no need to manually stop the energization as in the conventional case, which saves labor.

[Brief description of drawings]

FIG. 1 is a block diagram of an electric blanket according to an embodiment of the present invention, FIG. 2 is a plan view of the electric blanket, FIG. 3 is a block diagram of judgment means, and FIG. 4 is a frequency analysis diagram of the electric blanket. FIG. 5 is a block diagram of a conventional example. 1 ... Electric heater, 2 ... Temperature detecting means, 3 ... Electric blanket body, 4 ... Temperature setting means, 5 ... Sound detecting means, 6 ...
... determination means, 7 ... setting change means, 8 ... control means.

Claims (3)

[Claims] 1. A blanket body provided with an electric heater and a temperature detecting means for detecting the temperature of the electric heater, a temperature setting means for setting the temperature of the electric heater, a room, a bed, a human body or the like. A sound detecting means for detecting a sound, a judging means for judging whether a person has entered or awakened by a signal from the sound detecting means, and the temperature setting means by the temperature setting means and a signal from the judging means. An electric blanket comprising: a setting changing unit that changes the set temperature of the electric heater; and a control unit that controls energization of the electric heater based on a difference between a signal of the temperature detecting unit and a signal of the setting changing unit. 2. The judging means comprises a filter section for selecting a specific frequency of the signal from the sound detecting section, and a judging section for judging entrance or wake-up from the level of the frequency selected by the filter section. Claim 1
The electric blanket according to the item. 3. The electric blanket according to claim 1, wherein a mounting portion to which the sound detecting means is mounted is provided at one end of the electric blanket.