JPH10172405A - Automatic breaking device for power supply and automatic shutoff device for gas supply - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic breaking device for power supply to an electrical machinery and apparatus in the case of a continued one's absence and an automatic shutting off device for gas supply to a gas appliance in the case of a continued one's absence. SOLUTION: A supervisory part for one's absence 5 detects one's presence on the basis of a detection output 4a with a human body sensor 4, and outputs an electrifying command 5a, and makes an electrifying switch part 3 come into continuation, and carrys out power supply of a commercial power supply to a plug socket 2. The supervisory part for one's absence 5 measures a continued time for one's absence on the basis of a detection output 4a with a human body sensor 4. The supervisory part for one's absence 5 outputs a breaking command 5b when the continued time for one's absence reaches a set continued time for one's absence 6a by a one's absence time supervisory setting part 6, and an electrifying switch part 3 is made to disconnection, and the commercial power supply to the plug socket 2 is broken. On the basis of a breaking command 5a by the supervisory part for one's absence 5 a gas shutoff valve is closed, and gas supply from a gas cock to a gas appliance is shut off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic power cutoff device for shutting off power supply to an electric device when an absent state continues and a gas supply to a gas device when an absent state continues. The present invention relates to an automatic gas shutoff device.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 57-98750 discloses an electric kotatsu which detects the presence or absence of a person in the state of reflection of ultrasonic waves to control power and prevents forgetting to switch off. ing. Japanese Patent Application Laid-Open No. 1-193525 discloses an electric stove in which when a state in which a human body detection sensor does not detect a human body continues for a certain period of time, energization is turned off to prevent forgetting to turn off a power switch. JP-A-7-198149 discloses an infrared sensor, a timer switch, and a main switch.
Electric devices (electric kotatsu, electric blanket, heater, cooling device, radio, television, video, stereo,
Fan, air conditioner, etc.). 62-
Japanese Patent Application Publication No. 195696 describes a fan in which the presence or absence of a person is detected by a pyroelectric infrared sensor to prevent forgetting to turn off the power.

[0003] Japanese Utility Model Application No. 6-12439 (utility model registration 3)
No. 008534) has a hair dryer equipped with an automatic power shut-off device that receives a signal detected by a hair dryer detection sensor and a human body detection sensor and automatically turns off the hair dryer even when the hair dryer is turned on.・ A vanity stand with a dryer safety device is described. Japanese Patent Application Laid-Open No. 2-285157 discloses a detection unit for detecting the presence of a person in a room near an entrance of a bathroom.
A bathroom device is described in which a primary switch of a functional device or the like provided in a bathroom is automatically turned on / off in response to a person coming in or going out, so as to avoid forgetting to turn off a power supply.

Japanese Unexamined Patent Publication No. 6-2840 discloses a gas stove in which a human body detection sensor is attached to a gas stove, and the presence of a cooker is detected by the human body detection sensor. Safety devices are described.

[0005]

Various electric appliances have been proposed which detect the absence of a user or the like and cope with forgetting to turn off the power. However, conventional electrical devices are
The configuration is such that a human body detection sensor, an automatic shutoff timer, and the like are provided for each electric device. Therefore, when a plurality of electric devices are installed in the same room, a plurality of devices for forgetting to turn off the power, such as a human body detection sensor and an automatic shutoff timer, are provided, which is not economical. Also, it is not economical to provide a device for forgetting to turn off the power in each of the electric fan used in summer and the electric stove used in winter. Furthermore, when using an electric device that does not include a device for forgetting to turn off the power, it is not possible to cope with forgetting to turn off the power.

The same can be said for gas appliances.
For example, it is not economical to provide both a gas stove and a gas water heater set in a kitchen with a device for preventing gas from being forgotten to be stopped. In addition, when a gas appliance that does not have a device for preventing gas from being forgotten is used, it is not possible to cope with forgetting to stop gas.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an automatic power-off system capable of coping with a power-on forgetting without providing a device for forgetting the power-off for each electric device. It is intended to provide a device. It is another object of the present invention to provide an automatic gas shut-off device capable of coping with forgetting to stop gas without providing a safety device for coping with forgetting to stop gas for each gas appliance.

[0008]

In order to solve the above-mentioned problems, an automatic power-off device according to the present invention measures the duration of an absent state based on a detection output of a human body sensor, and sets the duration of an absent state in advance. When the absence monitoring time is reached, an absence monitoring unit that controls a current supply switch unit that supplies commercial power to an outlet to a cutoff state is provided.

The automatic power supply cutoff device according to the present invention cuts off power supply to the outlet when the duration of the absence state reaches the absence monitoring time. Therefore, it is possible to stop supplying power to the electric device connected to the outlet, and to cope with forgetting to turn off the electric device.

[0010] An automatic power supply cutoff device according to the present invention includes a current detecting unit for detecting a current supplied from an outlet to an electric device and a human body sensor, and is absent and supplies electric current to the electric device. Measures the duration of the absence power supply state that exceeds the monitoring current value.If the duration of the absence power supply state reaches the preset absence monitoring time, the power supply switch section that supplies commercial power to the outlet is activated. It is characterized by comprising an absence monitoring unit for controlling to a cutoff state.

The automatic power supply cutoff device according to the present invention cuts off the power supply to the outlet when the power supply state when absent reaches the absence monitoring time. Therefore, it is possible to stop supplying power to the electric device connected to the outlet, and to cope with forgetting to turn off the electric device. Even when the user is absent, power supply is not interrupted unless the supply current to the electric device exceeds the monitored current value, so that the timer reservation function of the electric device can be used. Accordingly, timer recording operation of a video tape recorder or the like, timer operation of the air conditioner, or the like, can be used. Further, even when the user is absent, the power supply to the nightlight, the emergency light, the answering machine, and the like can be continued.

By providing the absence monitoring time setting unit and the monitoring current setting unit, conditions for automatically shutting down can be set in accordance with the type and usage of the electric equipment connected to the outlet. For example, when performing timer recording or the like, timer recording or the like can be performed by setting an absence monitoring time longer than the recording time. In addition, by setting the monitoring current according to the power consumption of the electric device that constantly supplies power, it is possible to continue supplying power to the electric device that always supplies power. Only when the power supply of the electric device to be turned off is forgotten to be turned off, the power supply from the outlet can be cut off to cope with the forgetting to turn off the power supply.

[0013] In addition, the current supply can be automatically restarted by starting the current supply when the presence of a person is detected in a state where the power supply is cut off. Further, by operating the power supply start operation unit to restart power supply,
The user can be notified of the fact that the user has forgotten to turn off the power, and can be alerted.

An automatic gas shut-off device according to the present invention includes a gas stopper for supplying gas to gas equipment, a gas shut-off valve for shutting off gas supply to the gas stopper, and a gas supply valve. A gas flow detection unit to detect, a human body sensor to detect the presence of a person, and an absent gas supply state in which gas is supplied in an absent state based on the detection output of the gas flow detection unit and the detection output of the human body sensor And the absence gas supply monitoring unit that shuts off the gas shutoff valve when the duration of the absence gas supply state reaches a preset absence monitoring time. The absence monitoring time setting unit may be provided so that a user or the like can set the absence monitoring time.

The gas automatic shut-off device according to the present invention shuts off the gas shut-off valve and shuts off the gas from the gas plug when the duration of the state in which the gas is supplied in the absence of the user exceeds the absence monitoring time. Turn off the gas supply. Therefore, it is possible to cope with forgetting to stop the gas of the gas appliance.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram of an automatic power supply cutoff device according to the present invention. The automatic power supply cutoff device 1 according to the present invention includes an outlet 2, an energization switch unit 3, a human body sensor 4, an absence monitoring unit 5, an absence monitoring time setting unit 6, a power supply unit 7, an energization indicator 8, Consists of

The outlet 2 is for supplying commercial power to electric equipment (not shown). A plurality of outlets 2 may be provided in parallel.

The energizing switch 3 turns on and off the supply of commercial power to the outlet 2. The energizing switch unit 3 is configured using, for example, a self-holding relay (latching relay). When the energizing command 5a is supplied, the energizing switch unit 3 supplies a starting power to the starting winding of the self-holding relay for a certain period of time to make the contacts of the relay conductive. As a result, commercial power is supplied to the outlet 2. When the shut-off command 5b is supplied, the energizing switch unit 3 supplies restoration power to the starting winding of the self-holding relay for a certain period of time to open the contact of the relay. As a result, the supply of the commercial power to the outlet 2 is cut off.

The energizing switch section 3 may be configured using a relay that is not a self-holding type. Further, the energization switch unit 3 may be configured using a power semiconductor switching element such as a bidirectional thyristor.

The human body sensor 4 is for detecting the presence of a person. The human body sensor 4 is configured using a pyroelectric sensor that can detect infrared rays in a wavelength range radiated from a human body in a non-contact manner. The human body sensor 4 combines a focusing lens for infrared rays using a Fresnel lens and a pyroelectric sensor to form a detection range of, for example, 90 degrees in viewing angle and about 10 meters in a sector shape. It is possible to detect a person who is in the position. The detection output 4a of the human body sensor 4 is supplied to the absence monitoring unit 5.

The absence monitoring unit 5 outputs an energization command 5a for a predetermined time when the presence of a person is detected based on the detection output 4a of the human body sensor 4. The absence monitoring unit 5 includes an absence time counting circuit that measures the duration of the absence state when the presence of a person is not detected based on the detection output 4 a of the human body sensor 4. When the absence monitoring time 6a set by the absence monitoring time setting unit 6 has been reached, a cutoff command 5b is output for a fixed time. The absent time counting circuit stops counting the time when the presence of a person is detected, and resets the counted time to zero. Therefore, when the state becomes absent, the time measurement is always started from 0. Absence monitoring unit 5 outputs energization command 5a when the presence of a person is detected based on detection output 4a of human body sensor 4 after outputting cutoff command 5b.

The absence monitoring unit 5 outputs the power supply command 5a when the presence of a person is detected, and continues to output the power supply command 5a even when the presence of a person is no longer detected. May be configured to stop outputting the energization command 5a when the time reaches the absence monitoring time 6a set by the absence monitoring time setting unit 6. In this case, the energizing switch unit 3
The power supply to the outlet 2 is performed while the power supply command 5a is supplied, and the power supply to the outlet 2 is stopped when the power supply command 5a is not supplied.

Also, the absence monitoring unit 5 sets the absence monitoring time 6 set by the absence monitoring time setting unit 6 to the duration of the absence state.
At time point a, the shutdown command 5b may be output, and the output of the shutdown command 5b may be held until the presence of a person is detected. In this case, the power supply switch unit 3 supplies power to the outlet 2 when the cutoff command 5b is not supplied, and stops supplying power to the outlet 2 while the cutoff command 5b is supplied.

The absence monitoring time setting unit 6 includes a slide switch for setting the absence monitoring time in a plurality of stages. The absence monitoring time setting section 6 allows the absence monitoring time 6a to be set in several steps, for example, 30 minutes, 1 hour, 2 hours, and 4 hours.

Note that, without providing the absence monitoring time setting unit 6,
The absence monitoring time may be fixed. in this case,
The absence monitoring unit 5 is configured to output the cutoff command 5b when the duration of the absence state reaches a preset absence monitoring time.

The power supply section 7 is for supplying a DC power supply (not shown) to the power supply switch section 3, the human body sensor 4, the absence monitoring section 5 and the like. The power supply unit 7 generates DC power from commercial power and supplies it to each unit.

The power indicator 8 visually displays a state in which commercial power is supplied to the outlet 2. The power indicator 8 is configured using, for example, a neon lamp or the like. The power indicator 8 is connected to the outlet 2 in parallel.

It should be noted that a cut-off indicator is provided, and the outlet 2
May be displayed to indicate that the supply of commercial power to the power supply is interrupted.

With the above configuration, the automatic power supply cutoff device 1 shown in FIG. 1 supplies commercial power to the outlet 2 through the power switch unit 2 when the presence of a person is detected by the human body sensor 4. I do. Therefore, the electric equipment connected to the outlet 2 can receive the supply of the commercial power. The absence monitoring unit 5 measures the duration of the absence state in which the detection output 4a from the human body sensor 4 cannot be obtained,
When the continuation time of the absence state reaches the absence monitoring time 6a, the cutoff command 5b is output, and the power supply switch unit 3 is controlled to the off state, so that the power supply to the outlet 2 is cut off. As a result, power supply to the electric device connected to the outlet 2 is stopped. After the power supply is stopped,
When the presence of a person is detected by the human body sensor 4, power supply to the outlet 2 is automatically restarted.

FIG. 2 is a perspective view showing an example of the external structure of the automatic power supply cutoff device according to the present invention. The automatic power supply cutoff device 1 according to the present invention has a table tap type structure. Reference numeral 11 denotes an AC power plug, reference numeral 12 denotes a commercial power cable, and reference numeral 13 denotes an outlet case. The AC power plug 11 is connected to an AC outlet installed in a room or the like to receive supply of commercial power. One or more outlets 2 are attached to the outlet case 13, and the human body sensor 4 and the power indicator 8 are attached. The absence monitoring time setting unit 6 is provided on a side surface of the outlet case 13 or the like. Although not shown, the power switch unit 3, the absence monitoring unit 5, and the power supply unit 7 are provided inside the outlet case 13.

It should be noted that the automatic power supply cutoff device 1 includes a wall, a ceiling,
It is also possible to adopt a structure in which it is built in a recessed outlet section installed on the floor or the like. Further, the automatic power-off device 1 may be housed in a case of an exposed outlet fixed to a ceiling, a wall, a floor, or the like.

FIGS. 3 and 4 are explanatory views showing examples of use of the automatic power supply cutoff device according to the present invention. FIG. 3 shows a state in which commercial power is supplied from each of the automatic power cutoff devices 1A and 1B to each of the electric devices A and B, and FIG.
A and 1B show the state where supply of commercial power was cut off. In the room shown in FIG. 3 and FIG. 4, automatic power supply cutoff devices 1A and 1B are installed on the ceiling and the wall, respectively.
The lighting fixture A is connected to an outlet of the automatic power supply cutoff device 1A installed on the ceiling. The electric fan B is connected to the automatic power supply cutoff device 1B installed on the wall. Here, the absence monitoring time of each of the automatic power supply cutoff devices 1A and 1B is 3
It is assumed that it is set to 0 minutes. The phantom lines in FIGS. 3 and 4 indicate the detection ranges of the human body sensors 4 provided in the automatic power supply cutoff devices 1A and 1B.

When a person P is present in the room, each of the automatic power cutoff devices 1A and 1B detects the person P, and the outlet 2 is supplied with commercial power.
Therefore, when the power switch of the lighting fixture A is in the ON state, the lighting is turned on. If the power switch of the electric fan B is on, the electric fan B is in the operating state. Without turning off the power switch of the lighting apparatus A and the electric fan B, when the person P goes out of the room for business or the like and the person P disappears in the room, the absence monitoring unit 5 in each of the automatic power cutoff devices 1A and 1B is turned on. Time the duration of absence. And
When the absence state continues for 30 minutes, the power supply to the outlet 2 provided in each of the automatic power supply cutoff devices 1A and 1B is cut off. Therefore, when the absence status reaches 30 minutes,
The lighting device A is turned off, and the electric fan B stops operating. Thereafter, when the person P returns to the room, each of the automatic power-off devices 1A,
1B detects the presence of the person P and supplies power to the outlet 2, so that the lighting fixture A is turned on and the electric fan B starts operating.

FIG. 5 is a block diagram showing another automatic power supply cutoff device according to the present invention. The power supply automatic cut-off device 21 shown in FIG. 5 is configured to supply power to the outlet in the absence state and when the state in which a current exceeding a preset monitoring current value is supplied from the outlet to the electric device continues for the absence monitoring time. Is to be cut off. Further, the power supply automatic cutoff device 21 is configured to restart the power supply when the power supply start operation unit 29 performs the power supply start operation after the power supply is cut off.

The automatic power supply cutoff device 21 is connected to the outlet 2
Power supply switch unit 3, human body sensor 4, absence power supply monitoring unit 25, absence monitoring time setting unit 6, power supply unit 7,
It comprises a cutoff indicator 28, an energization start operation unit 29 constituted by using a push button type switch and the like, a current detection unit 30, and a monitoring current setting unit 31. The outlet 2, the power switch 3, the human body sensor 4, and the power supply 7 are the same as those shown in FIG.

The current detecting section 30 is constituted by using a clamp type AC current detector. The current detection unit 30 detects an alternating current supplied through the outlet 2 and a signal (hereinafter simply referred to as a current value) 30 relating to the detected current value.
a is output. The current detection unit 30 may include a low-resistance resistor for current detection, and may detect a voltage generated across the resistor.

When the power supply start command 29a is supplied from the power supply start operation unit 29, the power supply monitoring unit 25 outputs the power supply command 5a. As a result, the energizing switch unit 3 becomes conductive, and commercial power is supplied to the outlet 2. The absence power supply monitoring unit 25 determines whether the current supplied from the outlet 2 to the electric device is based on the current value 30 a supplied from the current detection unit 30 and the monitoring current value 31 a set by the monitoring current setting unit 31. Detect that it has exceeded
If the presence of a person is not detected based on the detection output 4a of the human body sensor 4, the duration of the absence power supply state is counted. Then, when the continuation time of the absence power supply state reaches the absence monitoring time 6a set by the absence monitoring time setting unit 6, the shutdown command 5b is output. As a result, the energizing switch unit 3 is turned off, and the supply of the commercial power to the outlet 2 is stopped.

After outputting the cutoff command 5b, the absence power supply monitoring unit 25 does not output the power supply command 5a even if the presence of a person is detected based on the detection output 4a of the human body sensor 4. When the absence of power supply monitoring unit 25 is supplied with a power supply start command 29a from the power supply start operation unit 29 in a state where the presence of a person is detected based on the detection output 4a of the human body sensor 4, the power supply command 5a is output. Output. Thus, even if an unintended energization start command 29a is supplied from the energization start operation unit 29 by a fallen object or the like in a state where a person is absent, power supply is not restarted. The absence power supply monitoring unit 25 receives the power supply start command 29 from the power supply start operation unit 29.
A configuration may be adopted in which the energization command 4a is output based only on “a”.

The monitoring current setting section 31 has a monitoring current value 31a.
Is provided over a plurality of stages. The monitoring current setting unit 31 can set the monitoring current value 31a in several steps, for example, 50 mA, 100 mA, 250 mA, and 500 mA.

The monitoring current value may be fixed without providing the monitoring current setting unit 31. In this case, the absence power supply monitoring unit 25 is configured to measure the time during which a current that is absent and that exceeds a preset monitoring current value is supplied.

The shut-off indicator 28 is configured using a neon lamp or the like. The cutoff indicator 28 is configured to be lit by supplying commercial power in a state in which the contact of the relay constituting the power supply switch unit 3 is switched to a state in which power supply to the outlet 2 is turned off. In addition, the interruption indicator 28
May be configured to intermittently emit a light emitting element that emits flash light, such as a flash lamp, and may be configured to visually indicate that power supply to the outlet 2 is interrupted. Also,
The cutoff indicator 28 may be configured to audibly indicate that power supply is cut off using a sounding body such as a buzzer. In addition, the cutoff indicator 28 may display a visual or audible indication that the power supply to the outlet 2 is cut off only while the person is present, based on the detection output 4a of the human body sensor 4.

With the above configuration, the other automatic power supply cut-off device 21 according to the present invention has a duration of the absence power supply state in which the current exceeding the monitoring current value 31a is supplied from the outlet 2 in the absence state. When the time reaches the absence monitoring time 6a, the power supply from the outlet 2 to the electric device is stopped. Even in the absence state, if the current supplied from the outlet 2 does not exceed the monitoring current value 31a, the power supply is not cut off, and the electric device connected to the outlet 2 performs the timer reservation function. When you have
The timer reservation function can be used. Therefore,
Timer recording operations such as timer recording of a video tape recorder or the like and start of timer operation of an air conditioner are possible. Further, even when the user is absent, for example, power supply to a nightlight, an emergency light, an answering machine, or the like can be continued.

Further, since the absence monitoring time setting section 6 and the monitoring current setting section 31 are provided, it is possible to set conditions for automatic shutoff according to the type and usage of the electric equipment connected to the outlet 2. it can. For example, when performing timer recording or the like, timer recording or the like can be performed by setting an absence monitoring time longer than the recording time. In addition, by setting the monitoring current according to the power consumption of the electric device that constantly supplies power, it is possible to continue supplying power to the electric device that always supplies power. Then, only when the power supply of the electric device to be turned off is forgotten to be turned off, the power supply from the outlet 2 is cut off, and it is possible to cope with the forgetting to turn off the power supply.

Further, since the power supply cannot be restarted unless the power supply start operation section 29 is operated, the user can be informed that the power supply has been forgotten to be turned off and can be alerted.

FIG. 6 is a block diagram of the automatic gas shut-off device according to the present invention. The automatic gas shutoff device 41 according to the present invention includes a gas stopper 42 for supplying gas to a gas device (not shown), a gas shutoff valve 43 for shutting off supply of gas to the gas stopper 42, and a gas flow detector 44. , Human body sensor 45
A gas supply start operation unit 46, an absent gas supply monitoring unit 47, an absent monitoring time setting unit 48, and a gas cutoff display unit 4.
9

A gas supplied from a gas pipe or a propane gas cylinder (not shown) is supplied to a gas stopper 42 via a gas flow detector 44 and a gas shutoff valve 43. Gas tap 42
Is provided with one or a plurality of connection ports for gas equipment (not shown).

The gas shut-off valve 43 is in an open state for supplying gas when the valve open command 47a is supplied, and holds this open state until the valve close command 47b is supplied. When the valve closing command 47b is supplied, the gas shutoff valve 43 is in a closed state in which the supply of gas is shut off.
Hold until a is supplied.

The gas flow detector 44 outputs a gas supply detection output 44a indicating that gas is being supplied by detecting the presence or absence of gas flow. Note that the gas flow detection unit 44
You may comprise using a gas flow meter.

The human body sensor 45 detects the presence of a person. The human body sensor 45 is configured using a pyroelectric sensor capable of detecting infrared rays in a wavelength range radiated from a human body in a non-contact manner. The human body sensor 45 combines a focusing lens for infrared rays using a Fresnel lens and a pyroelectric sensor to form a detection range of, for example, a fan shape with a viewing angle of 90 degrees and a distance of about 10 meters. It is possible to detect a person who is in the position. Human body sensor 45
Is supplied to the absence gas supply monitoring unit 47.

The gas supply start operation section 46 is provided with the gas shutoff valve 4.
This is for manually inputting a supply start command 46a for closing the valve 3. The gas supply start operation unit 46 includes, for example, a push button switch, and is configured to output a supply start command 46a when the push button switch or the like is operated. The supply start command 46a is supplied to the absence gas supply monitoring unit 47.

When the presence of a person is detected based on the detection output of the human body sensor 45 (presence state), the absent gas supply monitoring section 47 receives a supply start command 46a from the gas supply start operation section 46. Then, the supply start command 46a is used as a valid input to output the valve closing command 47b. Thereby, the gas shut-off valve 43 is closed, so that gas can be supplied from the gas stopper 42 to gas equipment (not shown).

The absent gas supply monitoring unit 47 is in the gas supply state where the gas supply detection output 44a is supplied, and
A state in which the detection output 45a of the human body sensor 45 is not obtained, that is, the duration of the absence gas supply state in which gas is supplied in the absence state is measured. Then, when the duration of the absence gas supply state reaches the absence monitoring time 48a set by the absence monitoring time setting unit 48, the valve closing command 47b is output. As a result, the gas shutoff valve 43 is closed, and the supply of gas to the gas stopper 42 is shut off.

The absent gas supply monitoring unit 47 outputs the valve closing command 4
After outputting 7b, a shutoff display command 47c is output,
The gas cutoff display section 49 displays that the gas is cut off. The absence gas supply monitoring unit 47 continues to output the cutoff display command 47c until a valid supply start command 46a is input. Note that the shutoff display command 47c is continuously output for a predetermined time when the valve close command 47b is output,
Thereafter, the cutoff display command 47c may be output only when a person is present based on the detection output of the human body sensor 45.

The gas shut-off display section 49 has a sounding body such as a buzzer, and audibly indicates that the gas is shut off based on the shut-off display command 47c. Note that a light emitting element that emits flash light, such as a flash lamp, may be provided to visually indicate that the gas is shut off.

The absence monitoring time setting section 48 includes a slide switch for setting the absence monitoring time in a plurality of stages. The absence monitoring time setting section 48 allows the absence monitoring time to be set, for example, in a range of several minutes to several tens of minutes.

The absence monitoring time setting section 48 may be omitted and the absence monitoring time may be fixed. In this case, the absent gas supply monitoring unit 47 is configured to output the valve closing command 47b when the absent monitoring time set in advance is reached.

The gas shut-off valve 43 can be manually set to the open state, and may be of a structure that shuts off the gas supply when the valve close command 47b is supplied. in this case,
There is no need to provide the gas supply start operation unit 46. The absence gas supply monitoring unit 47 may be configured to output only the valve closing command 47b.

With the above configuration, the automatic gas shut-off device 41 according to the present invention, when the state in which gas is supplied in a state where no person is detected (absence gas supply state) reaches the absence monitoring time 48a, Since the gas shutoff valve 43 is closed by outputting the valve closing command 47b, the supply of gas to the gas stopper 42 is stopped. Therefore, if the user is absent while using a gas appliance such as a gas stove or a gas grill installed in a kitchen or a gas heating appliance set in a living room or the like, the absence time reaches the absence monitoring time. At that point, the gas supply is shut off. Therefore, it is possible to cope with forgetting to stop gas.

When the gas is shut off, the gas shut-off display section 49 displays an audible or visual indication that the gas has been shut off, so that the user or the like forgets to stop the gas and knows that the gas was shut off automatically. it can.

[0060]

As described above, the automatic power supply cutoff device according to the present invention is configured to cut off the power supply to the outlet when the absence state continues, so that the power supply of the electric equipment connected to the outlet is forgotten to be turned off. I can deal with it. Therefore, it is possible to eliminate the waste of providing a safety device or the like for dealing with forgetting to turn off the power supply in each of the electric devices.
Furthermore, even when using an electric device which does not have a safety device for coping with forgetting to turn off the power, it is possible to cope with forgetting to turn off the power.

The automatic power supply cutoff device according to the present invention cuts off the power supply to the outlet when the current supplied from the outlet to the electric device exceeds the monitoring current and the absence state continues for the absence monitoring time. With this configuration, the power supply to the outlet can be cut off only when a current exceeding the monitoring current is supplied due to forgetting to turn off the electric device connected to the outlet. Even if the absence state continues, the power supply is continued as long as the monitoring current is not exceeded. Therefore, the power supply to the electric device that can perform the timer reservation operation is not interrupted, and the timer reservation operation is possible.

The gas automatic shut-off device according to the present invention is configured to shut off the gas supply to the gas tap when the gas supply in the absence state continues, so that the gas supply to the gas equipment connected to the gas tap is shut off. it can. Therefore, the waste of providing a safety device or the like for automatic fire extinguishing in each individual gas appliance can be eliminated. Furthermore, even when using gas equipment that does not have a safety device for automatic fire extinguishing,
You can deal with forgetting to stop gas.

[Brief description of the drawings]

FIG. 1 is a block diagram of an automatic power supply cutoff device according to the present invention.

FIG. 2 is a perspective view showing an example of an external structure of the automatic power supply cutoff device according to the present invention.

FIG. 3 is an explanatory diagram showing an example of use (a commercial power supply state) of the automatic power supply cutoff device according to the present invention;

FIG. 4 is an explanatory diagram showing an example of use of the automatic power supply cutoff device according to the present invention (commercial power supply cutoff state).

FIG. 5 is a block diagram of another automatic power cutoff device according to the present invention.

FIG. 6 is a block diagram of an automatic gas shut-off device according to the present invention.

[Explanation of symbols]

 1,21 Automatic power shut-off device 2 Outlet 3 Power switch unit 4,45 Human body sensor 5 Absence monitoring unit 6,48 Absence monitoring time setting unit 25 Absence power supply monitoring unit 29 Power supply start operation unit 30 Current detection unit 31 Monitoring current setting unit 41 Automatic gas shut-off device 42 Gas stopper 43 Gas shut-off valve 44 Gas flow detector 47 Gas supply monitoring unit when absent

Claims (9)

[Claims] 1. An outlet for supplying power to an electric device, an energizing switch unit for controlling energization / disconnection of the outlet, a human body sensor for detecting the presence of a person, and a detection output of the human body sensor. And measuring the duration of the absence state, and when the duration of the absence state reaches a preset absence monitoring time, the absence monitoring unit that controls the energizing switch unit to the cut-off state. Automatic power shut-off device. 2. The automatic power cutoff device according to claim 1, further comprising an absence monitoring time setting unit that sets the absence monitoring time. 3. The apparatus according to claim 1, wherein the state in which the power supply is cut off based on the absence detection output is restored to the power supply state when the presence of a person is detected based on the human body sensor. Automatic power-off device as described. 4. An outlet for supplying power to an electrical device, an energizing switch unit for controlling energization / disconnection to the outlet, a current detecting unit for detecting a current supplied from the outlet, A human body sensor that detects the presence, and an absent power supply in which the current detected by the current detection unit exceeds a monitoring current value set in advance and the absence is detected based on the detection output of the human body sensor. Measuring the duration of the state, and, when the duration of the absence power supply state reaches a preset absence monitoring time continuation, an absence power supply monitoring unit that controls the energizing switch unit to a cutoff state. Automatic power shut-off device. 5. The automatic power-off device according to claim 4, further comprising an absence monitoring time setting unit that sets the absence monitoring time. 6. The automatic power supply shut-off device according to claim 4, further comprising a monitoring current setting unit for setting the monitoring current value. 7. The automatic power supply shut-off device according to claim 4, further comprising an energization start operation unit for restoring a state in which energization is cut off to an energized state based on the absence detection output. 8. A gas valve for supplying gas to a gas appliance, a gas shutoff valve for shutting off gas supply to the gas valve, a gas flow detecting unit for detecting that gas is supplied, A human body sensor that detects the presence of a person, and based on the detection output of the gas flow detection unit and the detection output of the human body sensor, measures the duration of the absence gas supply state in which gas is supplied in the absence state, An automatic gas shutoff device comprising: an unattended gas supply monitoring unit that shuts off the gas shutoff valve when the duration of the absence gas supply state reaches a preset absence monitoring time. 9. The automatic gas shut-off device according to claim 8, further comprising an absence monitoring time setting unit that sets the absence monitoring time.