JP2007107778A - Ventilation equipment - Google Patents

Abstract

An object of the present invention is to provide a ventilator capable of efficiently detecting the presence of a person's occupancy and automatically operating the apparatus, reducing power consumption in a standby state, and suppressing deterioration of a sensor.
In a room having a door for entering and exiting, a door opening / closing detection means for detecting opening / closing of the door and a person detection means for detecting the presence of a person in the room are provided, and the door opening / closing detection is performed. When it is determined by the means 12 that the door 11 has been opened, the person detecting means 6 is operated to efficiently detect a person's occupancy and automatically operate, thereby reducing power consumption in the standby state and reducing sensor deterioration. Can be suppressed.
[Selection] Figure 1

Description

  The present invention relates to a ventilator that suppresses power consumption in a standby state.

Today, as a consideration for the environment and requests from end users, suppression of power consumption of electrical appliances is a major factor. As a method for suppressing power consumption in a ventilator, there is a method of automatically operating only when ventilation is necessary using various sensors. As an example, in order to automatically perform local ventilation only when a person is present in a toilet or the like, a method of detecting a person's presence from the number of times the door is opened or closed when entering or leaving the toilet is used. In this method, the person opens the door, enters the room, and closes it to determine that the person is in the room and operates the ventilator, and further opens and closes the door to determine that the person has left the room. It has stopped (for example, refer patent document 1).
JP 11-225914 A

  In such a conventional ventilator, the presence of a person is detected only by opening and closing the door.For example, when the first person leaves the room, the door is not closed and the second person enters the room continuously. When the door is closed, there is a possibility that a person may mistakenly recognize that the person is absent from the room. In addition, if an infrared sensor or the like is used as a means of detecting a person's occupancy without using an open / close door, false recognition is reduced, but the sensor circuit must be constantly energized, so extra power is required in a standby state. In addition, there is a problem that the life of the sensor is shortened because a load is constantly applied to the sensor.

  An object of the present invention is to solve the above problems, and to provide a ventilator capable of efficiently detecting and automatically operating a person's occupancy, reducing power consumption in a standby state, and suppressing sensor deterioration. To do.

  In order to solve the above problems, a ventilator according to the present invention comprises a door opening / closing detection means for detecting opening / closing of a door in a room having a door for entering and exiting, and a person detection means for detecting the presence of a person in the room. A fan for exhausting air in the room based on the detection result of the person detection means, the door opening / closing detection means, the person detection means, and a control means for controlling the fan. The control means operates the person detection means when it is determined that the person is opened.

  Another means of the ventilator of the present invention is characterized in that an infrared sensor is used as the person detecting means.

  Another means of the ventilator of the present invention is characterized in that an ultrasonic sensor is used as the person detecting means.

  Another means of the ventilating apparatus of the present invention is characterized in that an air quality sensor is used as the person detecting means.

  Another means of the ventilation apparatus of the present invention is characterized in that the control means operates the person detecting means when it is determined that the door is opened and closed by the door opening / closing detecting means.

  According to another means of the ventilating apparatus of the present invention, when it is determined that the door is closed by the door opening / closing detection means, and when the person detection means determines that no person is present in the room, the control means detects the person. The means is stopped.

  Another means of the ventilating apparatus of the present invention is that the door is determined to be closed by the door opening / closing detection means, and at that time, the person detection means determines that there is no person in the room, and the fan is in the operating state Is characterized in that the control means automatically stops the operation after operating the fan for a certain period of time.

  Another means of the ventilator of the present invention is characterized in that the control means changes the time until the fan is automatically stopped according to the time during which the person detecting means detects the presence of a person in the room.

  Another means of the ventilating apparatus according to the present invention is characterized in that an air quality sensor is used as the human detection means, and the control means changes the time until the fan is automatically stopped according to the detection result of the air quality sensor.

  Another means of the ventilating apparatus of the present invention is characterized in that the control means changes the rotational speed of the fan according to the time during which the person detecting means detects the presence of a person in the room.

  Another means of the ventilating apparatus according to the present invention is characterized in that an air quality sensor is used as the human detection means, and the control means changes the rotational speed of the fan according to the detection result of the air quality sensor.

  Another means of the ventilator of the present invention is a door opening / closing detecting means for detecting opening / closing of a door, an illuminance detecting means for detecting illuminance in the room, and the illuminance detecting means in a room having a door for entering and exiting. When it is determined that the door is opened by the door opening / closing detection means, the lighting means for illuminating the interior of the room based on the detection result of the above, and the door opening / closing detection means, the illuminance detection means and the control means for controlling the illumination means The control means operates the illuminance detection means.

  Other means of the ventilating device of the present invention include a door opening / closing detecting means for detecting opening / closing of a door, a person detecting means for detecting the presence of a person in the room, Illuminating means for illuminating the door, and the door opening / closing detecting means, the person detecting means, and a control means for controlling the lighting means, and it is determined that the door is closed by the door opening / closing detecting means. When it is determined that no person is present in the room, the control means stops the person detection means and the illumination means.

  The other means of the ventilating device of the present invention is that when the door opening / closing detection means determines that the door is open for a certain period of time, the control means turns on the human detection means, the fan, the illuminance detection means or the illumination means. It is characterized by being stopped.

  Another means of the ventilation apparatus of the present invention is characterized in that the fan or the lighting means is manually operated by the operating means provided in the control means.

  ADVANTAGE OF THE INVENTION According to this invention, it can provide the ventilation apparatus with the effect that it can detect a person's occupancy efficiently, can drive automatically, has little power consumption in a standby state, and can suppress deterioration of a sensor.

  According to a first aspect of the present invention, there is provided a ventilator according to a first aspect of the present invention, comprising: a door opening / closing detecting means for detecting opening / closing of a door; a person detecting means for detecting the presence of a person in the room; A fan that exhausts dirty air in a room based on a detection result of the detection means; and a door opening / closing detection means, the person detection means, and a control means for controlling the fan, and the door is opened by the door opening / closing detection means. When determined, the control means is characterized by operating the person detection means, efficiently detecting the presence of a person and automatically operating, less power consumption of the ventilator in the standby state, Further, since the human detection means is not always energized, the deterioration of the human detection means can be suppressed.

  The invention of the ventilator according to claim 2 is characterized in that, in the ventilator according to claim 1, an infrared sensor is used as a person detecting means, and the ventilator is automatically operated by human action. be able to.

  The invention of the ventilator according to claim 3 is characterized in that, in the ventilator according to claim 1, an ultrasonic sensor is used as the person detecting means, and the action of the person and when the person goes in and out The ventilator can be automatically operated by the operation of the door.

  The invention of the ventilator according to claim 4 is characterized in that in the ventilator according to claim 1, an air quality sensor is used as the person detecting means, and the ventilator is caused by carbon dioxide or odor generated from a person. Can be driven automatically.

  According to a fifth aspect of the present invention, in the ventilating apparatus according to the first aspect, the control means operates the human detection means when it is determined that the door is opened and closed by the door opening / closing detection means. It is characterized by the fact that automatic operation is not performed when there is no need for operation of the ventilator, such as opening a door during natural ventilation, and wasteful power consumption can be reduced.

  The invention of the ventilator according to claim 6 is the ventilator according to any one of claims 1 to 5, wherein the door is determined to be closed by the door open / close detecting means, and at that time, the person detecting means The control means stops the person detecting means when it is determined that no person is present, and the power consumption of the ventilator can be reduced when no person is present.

  In the ventilator according to claim 7, in the ventilator according to claim 1, it is determined that the door is closed by the door opening / closing detection means, and at that time, the person detection means determines that there is no person in the room. In addition, when the fan is in an operating state, the control means automatically stops the operation after the fan has been operated for a certain period of time, and there is sufficient dirty air even after the person leaves the room. Automatic operation until exhausted, and automatic stop when the air becomes clean can reduce wasteful power consumption.

  The ventilator according to claim 8 is the ventilator according to claim 7, wherein the control means determines the time until the fan automatically stops depending on the time when the person detecting means detects the presence of a person in the room. When a person's occupancy time is short and the amount of dirty air generated is small, the system automatically stops in a short time. By stopping after an automatic operation for a long time, the air can be appropriately cleaned and wasteful power consumption can be reduced.

  The invention of the ventilator according to claim 9 is the ventilator according to claim 7, wherein the air quality sensor is used as the human detection means, and the control means determines whether the air quality sensor detects the result until the fan is automatically stopped. It is characterized by changing the time, and by automatically operating for a time suitable for the amount of dirty air, the air can be appropriately cleaned and wasteful power consumption can be reduced.

  The invention of the ventilator according to claim 10 is the ventilator according to claim 1, wherein the control means changes the rotation speed of the fan according to the time during which the person detecting means detects the presence of a person in the room. When the time in which a person is occupying is short and the amount of dirty air generated is small, automatic operation at a low speed reduces power consumption and noise caused by fan rotation, and the occupancy time is When the amount of long and dirty air is large, the air is cleaned quickly by increasing the rotation speed.

  The invention of the ventilator according to claim 11 is the ventilator according to claim 1, wherein the air quality sensor is used as the human detection means, and the control means changes the rotational speed of the fan according to the detection result of the air quality sensor. When the amount of dirty air generated is small, automatic operation at a low rotation speed reduces power consumption and noise caused by fan rotation, and when the amount of dirty air generated is large Cleans the air early by increasing the rotation speed.

  The invention of the ventilator according to claim 12 is a door opening / closing detecting means for detecting opening / closing of a door, an illuminance detecting means for detecting illuminance in the room, and the illuminance detecting means in a room having a door for entering and exiting. When it is determined that the door is opened by the door opening / closing detection means, the lighting means for illuminating the interior of the room based on the detection result of the above, and the door opening / closing detection means, the illuminance detection means and the control means for controlling the illumination means The control means causes the illuminance detection means to operate, detects a person's occupancy efficiently and automatically operates, and the power consumption of the ventilator in a standby state is low, and the illuminance detection means Therefore, it is possible to suppress deterioration of the illuminance detection means.

  According to a thirteenth aspect of the present invention, there is provided a ventilator according to a thirteenth aspect of the present invention, wherein a door opening / closing detecting means for detecting opening / closing of a door, a person detecting means for detecting the presence of a person in the room, Illuminating means for illuminating the door, and the door opening / closing detecting means, the person detecting means, and a control means for controlling the lighting means, and it is determined that the door is closed by the door opening / closing detecting means. When it is determined that no person is present in the room, the control means stops the person detecting means and the illuminating means. When no person is present, the person detecting means and the illumination are used. Means can be stopped and wasteful power consumption of the ventilator can be reduced.

  The invention of the ventilator according to claim 14 is the ventilator according to claim 1, 12 or 13, wherein when the door open / close detection means determines that the door is open for a certain period of time, the control means However, it is characterized by stopping the human detection means, the fan, the illuminance detection means or the illumination means, and wasteful power consumption when the user forgets to close the door can be reduced.

  According to a fifteenth aspect of the present invention, in the ventilator according to the first, twelfth, or thirteenth aspect, the fan or the lighting means is manually operated by the operating means provided in the control means. Yes, the fan or lighting means can be forced to operate.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 3, the ventilator according to the present invention has a fan 2 that exhausts dirty air near the ceiling of a general household toilet 1, and an illumination that illuminates the interior of the toilet 1 through the illumination cover 3. A main body 5 including means 4 is arranged, and a human detection means 6, an illuminance detection means 7 and an operation means 8 are provided on the surface of the main body 5, and the fan 2, the illumination means 4, the human detection means 6, and the illuminance detection means. 7 and the operation means 8 are connected to a control means 10 equipped with a microcomputer 9 (hereinafter referred to as a microcomputer 9). The control means 10 is connected to a door opening / closing detection means 12 provided at an opening of a door 11 that is an entrance of the toilet 1.

  In the above configuration, the operation of the ventilator automatically operating will be described using the flowchart of FIG. In STEP 1, no person is present in the toilet 1, the door 11 of the toilet 1 is closed, and the fan 2, the illumination means 4, the person detection means 6, and the illuminance detection means 7 are not energized. In STEP 2 and STEP 3, when the microcomputer 9 determines that the door 11 has been opened from the detection result of the door opening / closing detection means 12, the illuminance detection means 7 is energized. Here, the door opening / closing detection means 12 may be a limit switch or the like. When the limit switch changes from ON to OFF, the microcomputer 9 determines that the door 11 has been opened, and when the limit switch changes from OFF to ON, the microcomputer 9 determines that the door 11 is closed. In STEP4 and STEP5, when the microcomputer 9 determines that the inside of the toilet 1 is dark from the detection result of the illuminance detecting means 7, the lighting means 4 starts energization, and if the inside of the toilet 1 is bright enough not to require lighting, The illumination means 4 is not energized. Here, an illuminance sensor can be considered as the illuminance detection means 7, an incandescent bulb, a halogen lamp, an LED, etc. can be considered as the illumination means 4. If it is lower, the microcomputer 9 determines that the inside of the toilet 1 is dark and starts energizing the lighting means 4.

  In STEP 6 to STEP 8, when energization of the human detection means 6 is started and the microcomputer 9 determines that a person is present in the toilet 1 from the detection result of the human detection means 6, Start energization. Here, as the human detection means 6, an infrared sensor, an ultrasonic sensor, an air quality sensor, or the like can be considered, and each case will be described below. The infrared sensor can detect a heat ray emitted by a person, and if there is a change in the heat ray due to an operation such as the entry / exit of a person, the microcomputer 9 determines the presence of the person, otherwise it is absent. to decide. The ultrasonic sensor can receive and transmit ultrasonic waves, and the microcomputer 9 determines the presence of a person from the time until the transmitted ultrasonic waves are reflected back to the object and received. That is, if the time until the ultrasonic wave is reflected and returned due to the person who entered the room or the movement of the door 11 by opening the door 11 is different from the determination time stored in the microcomputer 9 in advance, it is determined that the user is in the room. Other than that, it is judged to be absent. The determination time is the time until the transmitted ultrasonic wave is reflected back to the object and received by the microcomputer 9 when the ventilation device is installed and no person is in the toilet 1 and the door 11 is closed. It is good to memorize. As the air quality sensor, a CO2 sensor or an odor sensor can be considered. When an increase in CO2 due to the presence of a person or an odor emitted from manure or the like is detected, the microcomputer 9 determines that the person is in the room. Is judged absent.

  By operating as described above, it is not necessary to energize the illuminance detection means 7 and the person detection means 6 in the standby state, and appropriately energize the illumination means 4 and the fan 2 when a person enters the toilet 1. Therefore, the power consumption is small, and since the illuminance detection means 7, the person detection means 6, the illumination means 4 and the fan 2 are not always energized, their deterioration can be suppressed.

  The other operation | movement which a ventilator operates automatically using the flowchart of FIG. 5 is demonstrated. STEP 1 to STEP 12 are the same as those in the flowchart of FIG. 4 except that the microcomputer 9 starts integrating the door opening time To in which the door 11 is opened from the time when the door 11 is opened in STEP 9. It is. In STEPs 13 to 18, when the door 11 is closed, the integration of the door opening time To is stopped and the integration time is reset, and then the energization to the human detection means 6 is started. When the microcomputer 9 determines that a person is present in the toilet 1, energization of the fan 2 is started. On the other hand, if it is determined in STEP 17 that no person is present in the room, the microcomputer 9 determines that the toilet 1 is not being used and returns to STEP 1. Thereby, when the door 11 is opened but the use of the toilet 1 is stopped and the door 11 is closed, a standby state is entered, and wasteful power consumption can be reduced. If the door 11 cannot be closed in STEP 13, the process proceeds to STEP 14. If the door opening time To is longer than the determination time stored in advance in the microcomputer 9, the process returns to STEP 1. Thereby, when the door 11 is not closed during natural ventilation or when the toilet 1 is used and the user forgets to close the door 11 after use, wasteful power consumption can be reduced. Here, the determination time of the door opening time To is preferably a short period of about 5 minutes in order to reduce wasteful power consumption.

  Next, the operation | movement which a ventilator stops automatically using the flowchart of FIG. 6 is demonstrated. STEP 19 starts from a state in which it is determined that a person is present in STEP 7 in FIG. 4 or STEP 17 in FIG. 5, and the microcomputer 9 detects the presence time Te in which the person 9 is detected in STEP 20 and STEP 21. Accumulation starts and energization of the fan 2 is started. In STEPs 22 to 24, when the microcomputer 9 determines that the person who has finished using the toilet 1 has opened the door 11 and has left the room by the door opening / closing detection means 12 and the person detection means 6, the lighting means 4, By stopping energization to the illuminance detection means 7 and the person detection means 6 and stopping the accumulation of the occupancy time Te, it is possible to reduce useless power consumption. In STEPs 25 to 29, if the person's occupancy time Te is longer than the determination time stored in advance in the microcomputer 9, the occupancy time Te is reset and the fan 2 is energized after the remaining delay time T1 is operated. In the case where it is shorter than the determination time, after the remaining delay time Ts shorter than the remaining delay time Tl is operated, the in-room time Te is reset and the energization to the fan 2 is stopped. Here, the remaining delay time is the time from when a person leaves the room until the energization of the fan 2 is stopped, and the remaining delay time is defined as the remaining delay operation. In addition, the judgment time is about 5 minutes enough for a person to finish a small amount in the toilet 1, and the remaining delay time Tl is a time until the dirty air is exhausted sufficiently in the toilet 1 and cleaned. The remaining delay time Ts of about 1 hour is preferably about 15 minutes until the dirty air is sufficiently exhausted and cleaned in the toilet 1. As described above, when the toilet 1 is used for a long time, the air is so dirty that the fan 2 is automatically stopped after exhausting for a long time, and when the use time is short, the fan 2 is automatically stopped after exhausting for a short time. As a result, air can be appropriately cleaned and wasteful power consumption can be reduced.

  The other operation | movement which a ventilation apparatus stops automatically using the flowchart of FIG. 7 is demonstrated. Steps 19 to 24 are the same as the flowchart of FIG. 6 except that the occupancy time Te is not integrated. In STEP 30, if an air quality sensor is used as the human detection means 6 and the air level D detected by the air quality sensor is larger than the criterion stored in the microcomputer 9 in advance, after the remaining delay time Tl When the energization to the fan 2 is stopped and the current is smaller than the criterion, the energization to the fan 2 is stopped after the remaining delay time Ts shorter than the remaining delay time Tl. Here, a high air quality level D means that the air is dirty. FIG. 8 shows the circuit configuration of the air quality sensor, and FIG. 9 shows the relationship between the air quality level D and the determination criterion. The method for detecting the air quality level D will be described below. In FIG. 8, the air quality level D detection port 13 of the microcomputer 9 receives the resistance value Rs14 of the air quality sensor and the voltage divided by the voltage dividing resistor R115, and the air becomes dirty and the resistance value Rs14 of the air quality sensor. And the input voltage to the microcomputer 9 rises, the microcomputer 9 determines that the air quality level D is high and the air is dirty. In FIG. 9, the value of the air quality level D increases in proportion to the amount of dirty air in the toilet 1. Here, it is preferable that the determination standard is 3.5 V, the remaining delay time Tl is about 1 hour, and the remaining delay time Ts is about 15 minutes. When the energization to the fan 2 is stopped and the degree of contamination is small, the air is exhausted for a short time and then the energization to the fan 2 is stopped, so that the air can be appropriately cleaned and wasteful power consumption can be reduced.

  An operation in which the ventilation device automatically changes the rotation speed will be described with reference to the flowchart of FIG. STEPs 19 to 21 are the same as those in the flowchart of FIG. 6, and the rotational speed of the fan 2 in STEP 21 is a weak operation. In STEPs 34 to 37, if the occupancy time Te is longer than the determination time stored in advance in the microcomputer 9, the microcomputer 9 determines that the degree of air contamination is large, and stops the integration of the occupancy time Te. The time is reset, the current value to be energized next to the fan 2 is increased, and the operation becomes a strong operation with a large rotation speed, so that dirty air can be exhausted at an early stage. If the microcomputer 9 determines that no person is present in the toilet 1 in STEP 34 or STEP 38, the operation is delayed for a certain time in STEP 39 and STEP 40, and then the energization of the fan 2 is automatically stopped. Here, the determination time is preferably about 5 minutes sufficient for a person to finish small in the toilet 1 and the fixed time for remaining driving is about 15 minutes. Thereby, it can exhaust in the operation mode suitable for the dirt condition of air.

  Another operation in which the ventilation device automatically changes the rotation speed will be described with reference to the flowchart of FIG. STEPs 19 to 34 are the same as the flowchart of FIG. 10 except that the occupancy time Te is not accumulated. In STEP 41 and STEP 42, if an air quality sensor is used as the human detection means 6 and the air level D detected by the air quality sensor is larger than the criterion stored in the microcomputer 9 in advance, the current value to be supplied to the fan is The engine is lifted, and the engine becomes a strong operation with a large rotational speed, and exhausts dirty air at an early stage. Here, the air quality level D detection method and determination criteria are the same as those in the flowchart of FIG. If the microcomputer 9 determines that there is no person in the toilet 1 at STEP 34 or STEP 43, after energizing the fan 2 for about 15 minutes, for example, at STEP 44 and STEP 45, the energization to the fan 2 is stopped. Thereby, it can exhaust in the operation mode suitable for the dirt condition of air.

  As described above, the operation of automatically operating or stopping the ventilator has been described. However, a person forcibly presses the fan 2 or the illumination unit 4 by the fan on / off button or the illumination on / off button (not shown) of the operation unit 8. It is good to make it possible to run or stop.

  The ventilator according to the present invention efficiently detects a person's occupancy, automatically operates, consumes less power in a standby state, and can suppress deterioration of the sensor. It is useful for a ventilator used in a room partitioned by.

The perspective view which shows the structure of the ventilation apparatus of Embodiment 1 of this invention. Block diagram showing the control system of the ventilator Top view of the toilet where the ventilator is used Flow chart showing the operation of the ventilator automatically Flow chart showing other operations automatically operated by the ventilator The flowchart which shows the operation which the ventilator stops automatically Flow chart showing other operations that the ventilator automatically stops Diagram showing circuit configuration of air quality sensor The figure which shows the relationship between air quality level D and judgment standard Flow chart showing the operation of the ventilation device automatically changing the rotation speed Flow chart showing another operation in which the ventilation device automatically changes the rotation speed

Explanation of symbols

2 Fan 4 Illumination means 6 Person detection means 7 Illuminance detection means 8 Operation means 10 Control means 11 Door 12 Door open / close detection means 13 Air quality level D detection port

Claims (15)

In a room equipped with a door for entering and exiting, door opening / closing detection means for detecting opening / closing of the door, person detection means for detecting the presence of a person in the room, and dirty air in the room based on the detection result of the person detection means A door opening / closing detection means, the person detection means, and a control means for controlling the fan. When the door opening / closing detection means determines that the door has been opened, the control means A ventilator characterized by operating a detecting means. The ventilation device according to claim 1, wherein an infrared sensor is used as the human detection means. The ventilation apparatus according to claim 1, wherein an ultrasonic sensor is used as the human detection means. The ventilation device according to claim 1, wherein an air quality sensor is used as the human detection means. 2. The ventilating apparatus according to claim 1, wherein when it is determined that the door is closed after the door is opened and closed by the door opening / closing detection means, the control means operates the person detection means. The control means stops the person detecting means when it is determined that the door is closed by the door opening / closing detecting means, and at that time, when the person detecting means determines that there is no person in the room. The ventilation apparatus in any one of 1 thru | or 5. When the door opening / closing detection means determines that the door is closed, and at that time, the person detection means determines that there is no person in the room, and when the fan is in an operating state, the control means operates the fan for a certain period of time. The ventilation apparatus according to claim 1, wherein after the operation, the operation is automatically stopped. The ventilation device according to claim 7, wherein the control means changes the time until the fan is automatically stopped according to the time during which the person detecting means detects the presence of a person in the room. The ventilation apparatus according to claim 7, wherein an air quality sensor is used as a human detection means, and the control means changes a time until the fan is automatically stopped based on a detection result of the air quality sensor. The ventilation device according to claim 1, wherein the control means changes the number of rotations of the fan according to the time during which the person detection means detects the presence of a person in the room. The ventilation device according to claim 1, wherein an air quality sensor is used as the human detection means, and the control means changes the rotation speed of the fan according to a detection result of the air quality sensor. In a room provided with a door for entering and exiting, door opening / closing detection means for detecting opening / closing of the door, illuminance detection means for detecting illuminance in the room, and illumination means for illuminating the interior of the room based on the detection result of the illuminance detection means, The door opening / closing detection means, the illuminance detection means, and a control means for controlling the illumination means, and the control means operates the illuminance detection means when the door opening / closing detection means determines that the door has been opened. A ventilator characterized by letting. Door opening / closing detecting means for detecting opening / closing of a door, person detecting means for detecting the presence of a person in the room, lighting means for illuminating the inside of the room, and the door opening / closing detecting means The person detecting means and the control means for controlling the lighting means, and it is determined that the door is closed by the door opening / closing detecting means, and at that time, the person detecting means determines that there is no person in the room. When this happens, the control means stops the person detection means and the illumination means. The control means stops the human detection means, the fan, the illuminance detection means or the illumination means when it is determined by the door open / close detection means that the door is open for a certain period of time. The ventilator according to 12 or 13. The ventilation device according to claim 1, 12 or 13, wherein the fan or the lighting means is manually operated by an operating means provided in the control means.

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