JPS63297796A - Electric fan - Google Patents

Abstract

PURPOSE:To automatically orientate the wind of an electric fan toward the place where persons stay by controlling a direction changing motor in order that the direction of the electric fan head is turned to the detected range when a person detecting signal is given from a plurality of person sensors. CONSTITUTION:A person detecting signal from either one of person sensors 11 to 13 is inputted to an operation control circuit 21, and compared with the signals from position detecting elements 16-18 of a direction sensor 14. When the direction detecting signal is not inputted and the person sensor 11 detects the existence of a person, an oscillating motor 8 is driven, so that the fan head is driven automatically so as to meet the detecting range of the person sensor which has detected the existence of the person.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an electric fan equipped with a human sensor and an orientation sensor.

(Prior Art) In recent years, electric fans have been designed to detect the presence or absence of a person using a human sensor, and when the presence of a person is detected, drive a blade drive motor to perform air blowing operation zero-dynamically. is being considered.

(Problems to be Solved by the Invention) However, in the above-mentioned item 1-1, if the detection range of the human sensor is wide, the ventilation operation may be performed even when there is no person in the direction of the ventilation, and Air was not necessarily blown to.

As a countermeasure to this problem, it has been considered that when a human sensor detects the presence of a person, the head of the fan is oscillated. However, in other swing angle ranges,
After all, the air is blown in a direction where no one is present, and there is a problem in that the air is generally wasted, and in particular, when a person moves, the air cannot be blown in the direction that follows the movement of the person.

The present invention has been made in view of the above circumstances, and its L
One object is to provide an electric fan that can detect the presence of a person using a human sensor and perform automatic fan operation, and can always control the direction of the wind in the direction where the person is present.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a fan head that is swingably provided on a base and has blower blades and a blade drive motor that drives the fan head. A motor for changing the direction of the fan, a number of human sensors installed on the base side to detect the presence of people in different detection ranges, and a direction sensor that detects the direction of the head of the fan. and controlling the blade drive motor based on the orientation detection signal from the orientation sensor so that when a human detection signal is given from one of the human sensors, the orientation of the fan head is aligned with the detection range of the human sensor. and a control device that drives and controls the direction changing motor.

(Operation) When the presence of a person is detected by one of the plurality of human sensors and a human detection signal is given to the control device, the control device adjusts the direction of the fan head to match the detection range of the human sensor. The direction change motor is driven based on the direction detection signal from the direction sensor, thereby directing the head of the fan in the direction where the person is present. When the head of the fan is oriented within the detection range, this control device drives the blade drive motor to blow air in the direction where the person is present.

In addition, when a person moves and another person sensor outputs a person detection signal, the control device adjusts the direction of the fan head to the detection range, so even if the person moves, the blowing direction will be set in the direction in which the person moved. Can be changed.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

First, in FIGS. 2 and 3, 1 is a base having a support 2, 3 is a fan head which is swingably installed on a neck support 4 at the upper end of the support 2 via a stud 5. The electric fan head 3 is equipped with a blade drive motor 7 and an oscillation motor 8 (see FIG. 1 for both) in a cover 6, and a blower blade 9 rotatably driven by the blade drive motor 7. A surrounding protective net 9a is provided. The oscillation motor 8 is a direction control motor, and when it is energized, it causes the fan head 3 to oscillate within a predetermined oscillation range to change its direction. There is. 10
is a human sensor arrangement section formed at the base end of the support column 2, and this human sensor arrangement section 1° includes, for example, three human sensors 11.
．． 12 and 13 are arranged so that the presence of a person can be detected in different detection ranges within the vibration range of the electric fan head 3. Each person's sensor 11, 12, 13 consists of an infrared sensor. In this case, the human sensor 11 is in the angular range a in the forward right-hand direction (in the direction of the arrow) shown in FIG.
is set as the detection range, and the detection range of the human sensor 12 is the angular range in the front center (direction of arrow B), and the detection range of the human sensor 13 is the angular range C in the front left direction (direction of arrow C). It has become. And each person sensor 11.12.13
detects when a person is present in its detection range and outputs a first person detection signal Sml, a second person detection signal Sm2 .
A third human detection signal Sm3 (see FIG. 1) is output. On the other hand, reference numeral 14 denotes a direction sensor, which includes a magnet 15 disposed at the center of the rear surface of the protective net 9 of the fan head 3, and a position detection element 16 provided on the neck support 4, for example, a Hall element. .17.18. Thus, when the direction of the fan head 3 reaches the direction indicated by the arrow A, the position detection element 16 faces the magnet 15 and generates the first direction detection signal Sk1.
(see Figure 1), and similarly the position detection element 17
outputs the second direction detection signal Sk2 when the direction of the fan head 3 reaches the direction shown by the arrow B;
8 outputs a third angle detection signal Sk3 when the direction of the fan head 3 reaches the direction indicated by arrow C.

Reference numeral 19 denotes an operation unit provided on the top surface of the base 1, and this operation unit 19 is used to operate an automatic operation switch for automatic operation using the human sensors 11, 12, 13 and orientation sensor 14, and other functions such as an automatic operation switch for automatic operation using the human sensors 11, 12, 13 and the orientation sensor 14. In addition to an oscillation operation switch for performing an oscillation operation for blowing air, an air volume strength/weakness changeover switch, and various display lamps, etc., are provided.

Next, in FIG. 1, reference numeral 20 denotes a control device, which includes an operation control circuit 21 comprising a microcomputer 21, and drive circuits 22 and 23 for each motor. 24 is a DC power supply circuit that converts the commercial AC power supply Vac into DC power, and supplies the DC power to the operation control circuit 21 as a control source. Further, the commercial AC power supply Vac is applied to each drive circuit 22, 23. The drive circuits 22 and 23 each include a switching element such as a triac, and the operation control circuit 22.
The switching element is turned on and off based on the control signal given from 1, thereby controlling the power on and off of the blade drive motor 7 and the swing motor 8, respectively. 25
is an operation section circuit composed of various switches and various display lamps provided in the operation section 19, and the switch input is given to the operation control circuit 21, and the display lamp drive signal is sent from the operation control circuit 21. It is designed to be displayed on the display lamp. In addition, the operation control circuit 21
are adapted to receive detection signals Sm1, Sm2, and Sm3 from the human sensors 11, 12, and 13, respectively, as well as the position detection elements 16, 17 of the orientation sensor 14.
．． 18 to direction detection signals Ski, Sk2 . Sk3 is now given.

Now, the operation control circuit 21 has an automatic operation control program, and controls the blade drive motor 7 and the swing motor 8 according to the program as shown in the flowchart shown in FIG.

The control function of the operation control circuit 21 will now be described. Now, when the automatic operation switch is turned on, as can be seen from steps Si, S2 and S3 in FIG.
A determination is made as to whether or not there are inputs of ml, Sm2, and Sm3, that is, a determination is made as to whether or not the presence of a person is detected.

Thus, when there is no human detection signal input from any of the human sensors, the blade drive motor 7 and the swing motor 8 are not driven.

Here, for example, if there is a person detection signal Sm1 from the person sensor 11 (determined in step S1), as can be seen from step S4, the angle detection signal Sk1 is sent from the first position detection element 16.
If there is an input, that is, if the direction of the fan head 3 is within the detection range of this person sensor 11 (if it is facing in the direction of arrow A), The swinging motor 8 is not driven (step Sv), and the blade driving motor 7 is not driven.
In step 58)L, the air is blown in the detection range of the person detection sensor 11, that is, in the direction where the person is present.

On the other hand, when the human sensor 11 detects the presence of a person, if there is no human power from the direction detection signal Sk1 from the position detection element 16, that is, if the direction of the fan head 3 does not match the detection range, the detection is performed in step StO. As if
The oscillating motor 8 is driven to cause the fan head 3 to oscillate. Then, when the direction of the fan head 3 becomes the direction shown by the arrow A due to this oscillating motion, and the position detection element 16 outputs the direction detection signal Sk1, this signal Sk1 is given to the operation control circuit 21. Moving from step S4 to step S7, the driving of the oscillating motor 8 is stopped, the direction of the fan head 3 is adjusted to the direction in which a person is present, and then the blade driving motor 7 is driven. S8), the air is blown in the direction of the person's presence. In this case, if a person moves, for example, into the detection range of the person sensor 12, the motion moves from step S2 to step SS to step 810, the motion motor 8 is driven again, and the direction of the fan head 3 is changed. When the head oscillates toward the detection range (in the direction of arrow B), the drive of the swing motor 8 is stopped. In this way, when each person sensor 11, 12.13 detects the presence of a person, if the direction of the fan head 3 matches the detection range of the person sensor that detected the person, the fan head 3 will start blowing air and the person will be detected. When the fan head 3 moves, the direction of the fan head 3 is automatically changed to match the detection range of the human sensor that detected the presence of the person after the movement, and air is blown in that direction.

Note that the present invention is not limited to the above embodiments, and may be modified as follows. For example, it is conceivable that there may be inputs from two human sensors at the same time, so in this case, the direction of the fan head may be determined preferentially based on one of the inputs.

Further, in the above embodiment, the oscillation motor originally provided in the electric fan is used as the direction change motor to simplify the configuration, but the direction change motor may be provided exclusively. Furthermore, in the above embodiment, three position detection elements are provided for three human sensors, but for example, three position detection elements are provided for three human sensors.
Five position detection elements may be provided for each human sensor, and in this case, three of the five position detection elements
If the individual is made to correspond to the detection range of the human sensor, and the remaining two human sensors are made to correspond to the intermediate position of each detection range,
When a person is located between two human sensors and human detection signals are input from the two human sensors at the same time, fine-grained control can be performed by directing the fan head to the intermediate position. be able to. In addition, the placement position of the human sensor does not have to be at the base end of the column as long as it is on the base side.Furthermore, the position of the position detection element and magnet in the orientation sensor, the number of human sensors and position detection elements, etc. can also be changed as appropriate. Further, the orientation sensor may be an optical sensor, or may be a combination of a reed switch and a magnet.

It goes without saying that the present invention can be implemented in various other ways without departing from the scope of the invention.

[Effects of the Invention] As is clear from the above description, the present invention provides a fan head that is swingably provided on a base and has a blower blade and a blade drive motor that drives the fan head, and A direction change motor for changing the direction of the fan, a plurality of human sensors installed on the base side to detect the presence of a person in different detection ranges, and a direction sensor for detecting the direction of the head of the fan. , controls the drive of the blade drive motor, and when a person detection signal is given from one of the human sensors, the direction is adjusted based on the direction detection signal from the direction sensor so that the direction of the fan head is aligned with the detection range of the person detection signal. It is equipped with an 'rsm device that drives and controls the change motor, and with this, it can detect the presence of a person and automatically operate the air blower, and it also changes according to the movement of the person. The direction of the fan head can be automatically changed in that direction, and therefore, the excellent effect is achieved that the direction of the wind can always be well controlled in the direction where the person is present.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a block diagram of the electrical configuration, Figs. 2 and 3 are perspective and side views of the entire electric fan, respectively, and Fig. 4 shows the arrangement of the human sensor. FIG. 5 is a plan view showing the arrangement of the orientation sensor.
FIG. 6 is a flowchart showing control details. In the figure, 1 is the base, 3 is the fan head, 7 is the blade drive motor, 8 is the swing motor (direction change motor), 9 is the blower blade, numbers 1 to 13 are human sensors, and 14 is the direction sensor, 1
5 is a magnet, 16 to 18 are position detection elements, 20 is a control device, and 21 is an operation control circuit. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. A fan head that is swingably mounted on a base and has blower blades and a blade drive motor that drives the fan head, and a direction change motor that changes the direction of the fan head;
A plurality of human sensors provided on the base side to detect the presence of a person in different detection ranges, a direction sensor for detecting the direction of the fan head, and a direction sensor for driving and controlling the blade drive motor, and a control device that drives and controls the direction change motor based on the direction detection signal from the direction sensor so that when a person detection signal is given from the person sensor, the direction of the fan head is aligned with the detection range of the person detection signal. A fan made of