JPH0639120Y2 - Fan - Google Patents

Description

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

(Prior Art) In a conventional fan, as shown in FIG. 4, a neck support 3 is attached to an upper end of a column 2 standing on a base 1, and a fan head 4 is attached to the neck support 3 as a neck piece. Generally, the fan head 4 is supported by a fan motor 4 arranged in a motor cover 6 having a horizontally long cylinder shape. The blade 8 is attached and a guard 9 for covering the blade 8 is provided.

(Problems to be solved by the invention) By the way, recently, in fans, a person sensor for detecting the presence of a person is provided, and when a person comes in front of the fan, the blower operation is automatically started. However, it is considered to automatically stop the blowing operation when a person leaves.

However, when the human sensor is provided, the following problems occur in the conventional fan. That is, if the person sensor is attached to the base 1 or the support 2, the position thereof is too low, so that the presence of a person cannot be detected when a table or the like is placed in front of the fan. Therefore, it is preferable to provide the human sensor at a relatively high position, but since the guard 9 has a detachable structure, the wiring process is difficult, and the human sensor also swings with the swing motion during the swing operation. This makes it difficult to detect people. Further, when the person sensor is provided on the neck support 3 and the neck piece 5, the presence of a person cannot be detected because the guard 9 is located in front of the neck support 3 and the neck piece 5.

Further, it is desirable that the mounting position of the human sensor is such that the direction can be easily changed when adjusting the air blowing direction while holding the fan head, and there is no problem in the mounting space from the viewpoint of manufacturing.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a human sensor at a relatively high position while avoiding a guard where wiring processing is difficult, and without being disturbed by the guard, When adjusting the blowing direction by holding the fan head, the direction can be easily changed, and the human sensor always faces the center of the swing separately from the swing motion during swinging operation, and reliably detects the presence of a person. There is to provide a fan that can.

[Construction of the Invention] (Means for Solving Problems) In the fan of the present invention, a neck support is rotatably supported on the upper end portion of the base of the base so that the neck support is vertically movable. By supporting the fan head, which is rotatably supported in a direction, has a blower motor mainly disposed on the head, and covers the blades rotated by the blower motor with a guard, on the neck piece, In a structure in which the vertical and horizontal directions of the fan head can be adjusted, a human sensor is provided on the front surface of the neck piece, and the human sensor is positioned below the outside of the lower part of the guard. In order to do so, the head main body is formed to have a high height and the blower motor is disposed above the head main body.

(Operation) According to the present invention, the human sensor is arranged on the front surface of either the neck piece or the lower part of the head mainly located at a relatively high position, and the guard is positioned above the human sensor. Therefore, the presence of a person can be reliably detected without being disturbed by the table placed in front of the guard or the fan.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

First, in FIG. 1, 11 is a base on which a column 12 is erected. Reference numeral 13 denotes a neck support rotatably fitted to the upper end of the column 12, and a screw 14 is screwed onto the neck support 13 to form the tip of the screw 14 on the column 12 along the circumferential direction thereof. The neck support 13 by inserting the neck support 13
And the rotation angle range is restricted to a predetermined range. A friction ring 16 is provided below the neck support 13 so as to be in sliding contact with the support column 12, and the friction ring 16 prevents the neck support 13 from rotating accidentally. Reference numeral 17 denotes a neck piece supported by a neck support 13 via a shaft 18 so as to be vertically rotatable, and a fan head 19 is attached to the neck piece 17 by a stud 20 so as to be horizontally rotatable. ing.

Here, the configuration of the fan head 19 will be described. That is,
21 is a motor case mainly composed of a head, which has a relatively thin front-rear thickness and a high height.
Further, a flat base portion 21a protruding forward is formed at the lower end portion, and has a substantially L shape as a whole. Then, a blower motor 22 is arranged inside the upper part of the motor case 21, and a blade 23 is attached to a rotary shaft 22a of the blower motor 22 and a front and rear half-part type that covers the blade 23 on the motor case 21. The guard 24 of is attached detachably with screws 25. By thus forming the motor case 21 in a height shape and disposing the blower motor 22 in the upper portion thereof, the height position of the blades 23 and thus the height position of the guard 24 are increased, and thus the guard position is increased. 24 is positioned higher than the lower end base 21a of the motor case 21 as well as the neck piece 17. Reference numeral 26 denotes a swing mechanism arranged in the lower end base portion 21a of the motor case 21, which fixes the motor mount 27 to which the stud 20 is attached to the base portion 21a, and which is mounted on the motor mount 27. For motor 28
This is a well-known structure in which a crank 29 is attached to the rotating shaft 28a of the above and the crank 29 and the neck piece 17 are connected by a link 30.

The fan head 19 configured as described above includes the swinging motor 28.
When the oscillating mechanism 26 is operated by energizing the stud 20, the oscillating motion of the stud 20 is rotated left and right within a certain angular range, that is, the oscillating motion is performed.
It can be changed by rotating 19 around the pillar 12 integrally with the neck support 13. Further, when the fan head 19 is rotated around the shaft 18, the fan head 19 is rotated integrally with the neck piece 17 in the elevation direction (vertical direction),
The elevation angle is changing. FIG. 2 shows a depression / elevation angle adjusting mechanism 31 of the fan head 19, namely, 32.
Is a substantially U-shaped positioning member attached to the neck support 13, and has a plurality of holes 32a formed in an arc arrangement. A holding hole 17a is formed in the neck piece 17, and a ball 33 that is removably engaged with the hole 32a is housed in the holding hole 17a together with a compression coil spring 34.
By engaging any of the holes 17a with the fan head 1
The 9 is held in the lowered elevation position after adjustment. 3
Reference numeral 5 denotes a torsion coil spring provided between the neck support 13 and the neck piece 17, which prevents the fan head 19 from rotating backward due to its own weight when the fan head 19 is in an upward position. It is for

Therefore, in FIG. 1, reference numeral 36 is a human sensor, which is attached to the inside of the front surface of the neck piece 17,
It is directed forward from a window 17b formed in the front surface of the 17.
The human sensor 36 is configured to output a detection signal when the temperature of the surface that absorbs infrared rays changes, and detects the presence of a person by utilizing the fact that the surface temperature changes when a person moves. The detection range of the person sensor 36 is set so that it is possible to detect the presence of a person in front of the fan head 19, for example, within the swing angle range of the fan head 19.

Now, a third example showing an electrical configuration relating to the operation control of the electric fan.
In the figure, 37 is an amplifier circuit, and the detection signal Sa of the human sensor 36 is amplified by this amplifier circuit 37 and input to a comparison circuit 38. The comparison circuit 38 compares the amplified signal Sb from the amplification circuit 37 with a reference value, and outputs a person detection signal Sc when the amplified signal Sb exceeds the reference value. 39 is a timer circuit, which is a human detection signal Sc from the comparison circuit 38.
When receiving the operation signal Sd for each fixed time, the control circuit 40 energizes the blower motor 22 and the swing motor 28 only during the time when the operation signal Sd is received. Has become.

Next, the operation of the above configuration will be described. Now, suppose a person came in front of the fan. Then, based on the human sensor 36 outputting the detection signal Sa, the human detection signal Sc is input from the comparison circuit 38 to the timer circuit 39 and the operation signal Sd is input from the timer circuit 39 to the control circuit 40. As a result, the blower motor 22 and the swing motor 28 are both energized, the blades 23 are rotated to start blowing, and the swing mechanism 26 is activated and the fan head 19 starts swinging motion. Then, when the person continues to be in front of the fan as it is, the human sensor 36 outputs the detection signal Sa every time the person performs some operation, so the timer circuit 39 continues to output the operation signal Sd, and The fan continues to operate with air blow and swing.

On the other hand, when a person leaves the front of the fan, the person sensor 36 does not output the detection signal Sa. Therefore, when the operation signal Sd from the timer circuit 39 is interrupted, the blower motor 22 and the swing motor 28 are disconnected. Electricity is turned on and both the blowing operation and the swinging operation are stopped.

As described above, according to the present embodiment, the motor case 21 is formed to be tall and tall, and the blower motor 22 is disposed above the motor case 21. Since it is located above the front part of the attached neck piece 17, the human sensor is not disturbed by the guard 24.
The presence of a person can be detected by the 36, and since the front portion of the neck piece 17 to which the person sensor 36 is attached is at a relatively high position, even if a table or the like is placed in front of the fan, the table The presence of a person can be detected by the person sensor 36 without being disturbed by the like. Furthermore, since the human sensor 36 is attached to either the neck piece 17 or the base 21a of the motor case 21, in the present embodiment, is attached to the front surface of the neck piece 17, the human sensor 36 is integrated with the fan head 19. It comes to rotate in the elevation direction. This is because the reason for adjusting the depression / elevation angle of the fan head 19 is, for example, whether a person is sitting on a tatami mat or sitting on a sofa, and the upper body to receive the most wind is in a lower position or a higher position. The human sensor 36 can detect the presence of a person by the movement of the upper body of the person sitting on the tatami mat or sitting on the sofa, which has a high frequency of movement. The presence of a person can be detected more reliably.

In addition, when a person sits in front of a fan that is swinging, he or she often sits near the center of the swing range.
Is attached to the neck piece 17, even when the center of the swing motion is changed by rotating the fan head 19 together with the neck support 13 in the left-right direction, even while the fan head 19 is swinging, The human sensor 36 will always be pointing to the person, which is convenient for detecting the presence of a person.

The motor case 21 may be constructed such that its height is slightly lower and the lower part of the guard 24 faces the lower end of the motor case 21. Further, in the above-described embodiment, the fan head 19 is supported by the neck piece 17 so as to be rotatable in the left-right direction, and is configured to perform the swing motion. However, it is not always necessary to allow the swing motion. It suffices that the head be configured so that the left and right directions can be adjusted by rotating the neck support, and the vertical direction can be adjusted by rotating the neck piece in the up and down direction.

[Advantages of the Invention] As described above, according to the present invention, the human sensor is arranged on the front surface of the neck piece, and the human sensor is positioned below the lower outer periphery of the guard. Since the main body is formed in a tall shape and the blower motor is arranged above it, the human sensor is not disturbed by the guard or the table placed in front of the fan, and the components are As the human sensor is installed on a small number of neck pieces,
It is possible to reliably detect the presence of a person without a space problem. Moreover, since the human sensor moves integrally with the fan head even when the vertical and horizontal directions of the fan head are adjusted, the human sensor can detect the person more reliably. It is effective.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is an overall vertical side view, FIG. 2 is an enlarged vertical sectional view of a depression / elevation angle adjusting mechanism, and FIG. 3 is a fan operation. 3 is a block diagram showing the control configuration of FIG. Further, FIG. 4 is a side view of a conventional fan. In the figure, 11 is a base, 12 is a support, 13 is a neck support, 17 is a neck piece, 19 is a fan head, 21 is a motor case (mainly head), 22 is a blower motor, 24 is a guard, 26 is Swing mechanism,
28 is a swinging motor, and 36 is a human sensor.

Claims (1)

[Scope of utility model registration request] 1. A blower motor is supported mainly on the head by supporting a neck support on the upper end of a column of a base so as to be rotatable in the left-right direction, and supporting a neck piece on the neck support so as to be rotatable in the up-down direction. By supporting the fan head, in which the blades rotated by the blower motor are covered by a guard, on the neck piece, the vertical and horizontal directions of the fan head can be adjusted. In this configuration, a human sensor is provided on the front surface of the neck piece, and the head main body is formed in a tall and tall shape so that the human sensor is located below the guard. An electric fan, wherein the blower motor is disposed above the head.