JPH06235396A - Fan - Google Patents

Abstract

PURPOSE:To permit the automatic operation by detecting the operation stop of an air conditioner from the change of the room temperature and eliminate the inconvenience that sleep of a user is obstructed because of the inconvenience due to the operation stop of the air conditioner. CONSTITUTION:A fan blower is equipped with an electric motor 42 for rotationally driving a blowing fan, switch circuit 51 for the instruction of the revolution of the electric motor 42, temperature detection part 52 for detecting the environmental temperature, and a control circuit 54 which drives the electric motor 42 when the temperature rises by a prescribed value from the min. temperature after selecting the sleep operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a fan for improving comfort during sleep.

[0002]

2. Description of the Related Art An air conditioner is used to eliminate sleepiness, but a timer operation is generally performed to prevent coldness. However, the room temperature may rise again after the operation of the air conditioner is stopped, and sleep may be disturbed.

In order to solve the problem, a fan configured to operate when the room temperature exceeds a predetermined temperature after the air conditioner has been stopped was proposed in Japanese Utility Model Publication No. Sho 63-63594 (F04D 27/00). . With this configuration, the timer of the fan must be set in accordance with the timer setting of the air conditioner, and there is a drawback in that it is not convenient to use. Also, since the air conditioner operates intermittently or inverts to maintain the room temperature at the set temperature, the room temperature changes within a range of several degrees. It is configured to operate when the room temperature at the time of measuring the reference temperature happens to be high because the room temperature is measured before the time is set to the reference temperature and the difference between the reference temperature and the room temperature after the air conditioner is stopped reaches a predetermined temperature. However, there is a drawback that the fan does not operate even when the temperature reaches the user's desired temperature, which gives the user discomfort.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and provides a fan capable of detecting a room temperature rise after a stop of an air conditioner and setting a good night operation by a simple operation. This is an issue.

[0005]

The first means of the present invention is to:
When the electric motor that rotationally drives the blower fan, the operation unit that instructs the rotation of the electric motor, the temperature sensor that detects the ambient temperature, and the predetermined temperature increase from the lowest temperature after selecting the good night operation,
A control circuit for driving the electric motor is provided.

A second means of the present invention is an electric motor for rotationally driving a blower fan, and an operating section for instructing the rotation of the electric motor.
It is characterized in that a temperature sensor for detecting an ambient temperature and a control circuit for driving the electric motor when a predetermined temperature rises from the lowest temperature after the selection of the good night operation and canceling the good night operation after a predetermined time from the selection of the good night operation.

A third means of the present invention is an electric motor for rotationally driving a blower fan, and an operating section for instructing the rotation of the electric motor.
It is characterized in that a temperature sensor for detecting an ambient temperature and a control circuit for driving the electric motor when the predetermined temperature rises from the minimum temperature after the selection of the good night operation and stopping the operation after a predetermined time from the start of driving the electric motor.

A fourth means of the present invention is to provide a fan head having an electric motor for rotationally driving a blower fan, a base for supporting the fan head, and a horizontal swing of the fan head with respect to the base. A left and right swing motor, a temperature sensor that detects the ambient temperature, and a control circuit that drives the electric motor and the left and right swing motor when the temperature rises from the lowest temperature after selecting the good night operation by a predetermined temperature. Characterize.

A fifth means of the present invention is to provide a fan head having an electric motor for rotationally driving a blower fan, a base for supporting the fan head, and a horizontal swing of the fan head with respect to the base. Left and right swing motors, vertical swing motors that swing the fan head up and down with respect to the base, temperature sensors that detect ambient temperature, and a predetermined temperature rise from the minimum temperature after selecting good night operation Then, a control circuit for driving the electric motor and driving the left and right swing motor and the vertical swing motor is provided.

[0010]

According to the first means of the present invention, when the sleep operation is performed while the air conditioner is operated by the timer, if the sleep operation is selected, the temperature sensor detects the room temperature, and the sleep operation after the sleep operation is selected. When the temperature rises from the minimum temperature to a predetermined temperature, it is determined that the air conditioner has stopped, and air blowing is started.

According to the second means of the present invention, when the sleep operation is performed while the air conditioner is operated by the timer, when the sleep operation is selected, the temperature sensor detects the room temperature, and the sleep operation after the sleep operation is selected. When the temperature rises from the minimum temperature to a predetermined temperature, it is determined that the air conditioner has stopped, and air blowing is started. Also,
When a predetermined time has passed after the selection of the night driving, the night driving is canceled, and the inconvenience of forgetting to cancel the night driving and starting the driving in a room where nobody is present is solved.

According to the third means of the present invention, when the sleep operation is performed in a state where the air conditioner is operated by the timer, when the sleep operation is selected, the temperature sensor detects the room temperature and the sleep operation after the sleep operation is selected. When the temperature rises from the minimum temperature to a predetermined temperature, it is determined that the air conditioner has stopped and air is blown,
The operation is stopped after a lapse of a predetermined time from the start of air blowing to prevent sleeping chill due to long time air blowing.

According to the fourth means of the present invention, when the sleep operation is performed while the air conditioner is operated by the timer, when the sleep operation is selected, the temperature sensor detects the room temperature and the sleep operation after the sleep operation is selected. When the temperature rises from the minimum temperature to a predetermined temperature, it is determined that the air conditioner has stopped and air is blown,
Shake left and right to prevent chills due to intensive blows of air for a long time.

According to the fifth means of the present invention, when the sleep operation is performed while the air conditioner is being operated by the timer, when the sleep operation is selected, the temperature sensor detects the room temperature and the sleep operation after the sleep operation is selected. When the temperature rises from the minimum temperature to a predetermined temperature, it is determined that the air conditioner has stopped and air is blown,
By swinging left and right and swinging up and down, it is possible to more reliably prevent coldness due to intensive blows of air for a long time.

[0015]

An embodiment of the present invention will be described in detail with reference to the drawings.

Reference numeral 1 denotes a stand made of synthetic resin, which supports a column 2 so as to be able to move up and down, and the stand 1, the column 2, and a neck piece 25 described later constitute a base 3. Four
Is an operation unit formed on the stand 1, and includes a power switch 5 for controlling power supply to the electric motor 42, which will be described later, and a mode switch 6, which selects an automatic operation mode, a good night operation mode, and a manual operation mode, which will be described later. An air flow rate adjustment switch 7 for controlling the rotation speed of the electric motor 42 to control the amount of air blown by a blower fan 43 described later, an intermittent operation switch 8 for intermittently operating the electric motor 42 to blow air close to nature, and an operating time of the electric motor 42. It has a timer switch 9 for controlling, and a head swing adjustment switch 10 for selecting a head swing 39, which will be described later, for horizontal swing, vertical swing, and three-dimensional swing for simultaneously performing horizontal swing and vertical swing. 11 is the switch 5, 6, 7, 8, 9,
An LED for displaying an operating state according to the operation of 10, and a receiving unit 12 for receiving an infrared signal from a transmitter (not shown).

Reference numeral 13 denotes a temperature sensor arranged at the rear portion of the stand 1, as shown in FIGS.
It is attached to the upper part of the power cord storage chamber 14 formed in the. Reference numeral 15 denotes an object fitted into an opening formed in the upper surface of the stand 1, and a step portion 16 formed in the lower portion is brought into contact with the peripheral edge of the opening to prevent downward movement. A plurality of slits are formed in the body 15, and a storage space for the temperature sensor 13 surrounded by the body 15 and a mounting plate 19 described later is communicated with the outside air through the slits, and the temperature sensor 13 with respect to a room temperature. The followability is improved.

A boss 17 is formed so as to hang down from the stand 1, and a back cover 18 for closing the opening of the lower surface of the stand 1 is screwed and fixed. Reference numeral 19 is a mounting plate on which the temperature sensor 13 is mounted, and has a locking claw 20 that engages with a locking hole formed in the lower part of the body 13, and the locking claw 20 is fitted in the locking hole of the body 15. In the engaged state, the boss 17 and the back cover 18 are clamped and fixed. Reference numeral 21 is a locking piece formed on the mounting plate 19 so as to fix a lead wire 22 connecting the temperature sensor 13 and a circuit board (not shown). Reference numeral 23 is a side wall integrally formed on both sides of the mounting plate 19, and the side wall 23 and the mounting plate
The lead wire 22 is disposed in a space surrounded by the stand 19 and the stand 1, and when the power cord is inserted into or removed from the power cord storage chamber 14, the power cord is caught by the lead wire 22 to break the lead wire 22. It is designed to prevent Reference numeral 24 denotes a lid body that opens and closes the lower surface opening of the power cord storage chamber 14.

Reference numeral 25 denotes a neck piece pivotally supported on the upper portion of the support column 2 so as to be able to tilt upward and downward, and integrally forms a bearing portion 26 for rotatably supporting a pivot shaft 41 of a fan head 39 described later. Reference numeral 27 denotes a left and right swing motor housed in the neck piece 25, which is screwed and mounted on a boss 28 formed on the neck piece 25. Reference numeral 29 denotes a cam plate which is mounted on the output shaft of the left and right swing motor 27 so as not to rotate, and has an eccentric portion on the lower surface.
30 are integrally formed. Reference numeral 31 denotes a drive link in which a ring portion formed at one end is loosely fitted in the eccentric portion 30 of the cam plate 29, and a shaft hole is formed at the other end so as to be loosely fitted in an eccentric shaft 33 of a swing center adjusting body 32 described later. There is.

Reference numeral 32 denotes a swing center adjusting body which is fitted over the bearing portion 26 of the neck piece 25 so as to be loosely fitted and supported. The swing center adjusting body 32 is provided so as to project downward at an eccentric position and has a shaft hole of the drive link 31. It has an eccentric shaft 33 which is loosely fitted and supported, and a locking projection 34 which is provided at an eccentric position so as to project upward and is loosely fitted in an arc hole formed in a support plate 40 described later. The protrusion 34 has a groove formed on the side surface, and the head is locked to the circular arc hole peripheral edge of the support plate 40 to prevent the swing center adjusting body 32 and the support plate 40 from coming off. Reference numeral 35 denotes a recess formed in the vicinity of the locking projection 34 of the swing center adjusting body 32, which accommodates the spring 36 and the ball 37, and urges the ball 37 to the support plate 40 by the spring 36.
The balls 37 are selectively engaged with any of a plurality of engagement holes formed in the support plate 40 to maintain the orientation of the support plate 40 with respect to the swing center adjusting body 32. Reference numeral 38 is a lid that covers the upper surface opening of the neck piece 25.

Next, the fan head 39 will be described. Reference numeral 40 denotes a support plate having a pivot 41 which is inserted into the bearing portion 26 of the neck piece 25 and the swing center adjusting body 32 so as to be loosely fitted and supported, and has a circular arc centered on the pivot 41 and a plurality of engaging holes. The locking projection 34 head of the swing center adjusting body 32 is inserted from the expanded portion formed on one side of the arc hole, and the locking projection 34 head is locked to the arc hole periphery. The swing center adjusting body 32 and the support plate 40 are prevented from coming off. The balls 37 arranged on the neck piece 25 are selectively engaged with the engaging holes by the urging force of the spring 36.

Reference numeral 42 denotes an electric motor supported by the support plate 40 so as to be vertically swingable, and a blower fan 43 is detachably attached to the output shaft thereof. 44 is the electric motor 42
A guard 45 that surrounds the blower fan 43 is detachably attached by a front cover that covers the front part of the.

Reference numeral 46 is a mounting plate mounted on the rear portion of the electric motor 42, 47 is a vertical swinging motor mounted on the mounting plate 46, and a cam 48 is mounted on the output shaft of the motor 48. And are connected by a link 49. Reference numeral 50 is a rear cover that covers the electric motor 42, the vertical swing motor 47, and the like.

Next, the circuit will be described with reference to FIG.

Reference numeral 51 designates a switch circuit having switches 5, 6, 7, 8, 9, 10 formed on the operation portion 4 of the base 3, and 52 designates a temperature sensor 13 arranged on the base 3. The temperature detection unit 53 included therein is a reception unit that receives an infrared signal from a transmitter (not shown).

Reference numeral 54 is a control circuit composed of a microcomputer, which includes the switch circuit 51, the temperature detector 52 and the receiver 53.
From a motor drive unit 55 for driving and controlling the electric motor 42, a left and right swing motor drive unit 56 for driving and controlling the left and right swing motor 27, and a drive control for the vertical swing motor 47. A vertical swing motor drive unit 57, and a display control unit 58 for controlling each LED 11 arranged on the operation unit 4 of the base 3.
A control signal is output to.

Next, the operation will be described with reference to the flow charts shown in FIGS. In addition, in this flowchart, the case where each switch provided in the operation unit 4 of the base 3 is operated is described, but the same applies when a signal from a transmitter (not shown) is received.

2 to 4 show a main routine. In step S1, it is determined whether or not each switch is operated. When the switch is operated, it is determined in step S2 whether or not the electric motor 42 is driven. If the electric motor 42 is not driven, the power switch 5 is turned on in step S3.
If the power switch 5 is operated, the automatic operation routine is executed. If the power switch 5 is not operated, it is determined that the operation is an erroneous operation, and the process proceeds to step S1.

If the electric motor 42 is driven in step S2, it is determined whether or not the power switch 5 is operated in step S4. When the power switch 5 is operated, the electric motor 42 is stopped in step S5. Step S
If the power switch 5 is not operated in step 4, it is determined in step S6 whether the mode switch 6 is operated. When the mode changeover switch 6 is operated, it is determined in step S7 whether or not the current operation mode is the automatic operation mode, and if it is the automatic operation mode, the good night operation routine is executed. If it is not the automatic operation mode, it is determined in step S8 whether or not the current operation mode is the good night operation mode. If it is the good night operation mode, the manual operation routine is executed. If it is not the good night operation mode, the automatic operation routine is executed. To execute.

If the operated switch is not the mode switch 6 in step S6, it is determined in step S9 whether the air volume adjusting switch 7 has been operated,
If the air volume adjusting switch 7 is operated, the air volume adjusting routine is executed. If the switch operated in step S9 is not the air volume adjustment switch 7, it is determined in step S10 whether the intermittent operation switch 8 has been operated,
If the intermittent operation switch 8 is operated, the intermittent operation routine is executed.

If the switch operated in step S10 is not the intermittent operation switch 8, it is determined in step S11 whether the timer operation switch 9 has been operated. If the timer operation switch 9 has been operated, the timer setting routine is executed. Run. If the switch operated in step S11 is not the timer setting switch, step S12
At, it is determined whether or not the head swing adjustment switch 10 has been operated. If the head swing adjustment switch 10 has been operated, a head swing adjustment routine is executed.

Next, the automatic operation routine will be described with reference to FIG. 5. At step S13, the room temperature is measured, and at step S14, the air flow is started at the air volume corresponding to the room temperature, and the swinging at the end of the previous operation is performed. I do. The air volume corresponding to the room temperature is set as shown in FIG. 11, and the air volume number corresponding to the air volume is attached. In step S15, it is determined whether 1 minute has elapsed after measuring the room temperature, and 1
After a lapse of minutes, the room temperature is measured in step S16.
In step S17, the air volume corresponding to the room temperature measured this time is calculated from FIG. 11, and the difference T between the air volume number T1 and the air volume number T2 corresponding to the room temperature measured last time is calculated. The air volume number T1 calculated in step S18 is set to the air volume number T2. In step S19, an air volume number obtained by adding the measured air volume difference T calculated in step S17 to the air volume number stored in the air volume memory is set in the air volume memory, and in step S20.
In step S19, the air volume is sent with the air volume number stored in the air volume memory.

In step S21, the air volume adjustment switch 7
If it is operated and the air volume adjustment switch 7 is operated, in step S22, the air volume number which is one more than the air volume number of FIG. Blow the air.

The amount of air blown by the user is adjusted in steps S21 to S23, and the amount of air blown to changes in room temperature is controlled in accordance with the amount of air blown in steps S13 to S20.

Next, the sleep operation routine will be described with reference to FIGS. 6 and 10. In step S24, the room temperature is measured, and in step S25, the operation is started with the air volume corresponding to the measured temperature. The relationship between the measured temperature and the air volume is the same as in the above-described automatic operation routine. In step S26, the vertical swing motor 47 and the horizontal swing motor 27 are driven to start the solid swing and display the solid swing L
The ED11 is blinked, and the user is asked whether or not he / she can swing the three-dimensional head at the start of the good night operation, and whether the fan is likely to tip over when the three-dimensional head swing is performed.

In step S27, the air volume adjusting switch 7
If it is operated and the air volume adjusting switch 7 is operated, in step S28, an air flow number which is one more than the current air volume is set in the air volume memory, and in step S29, the air volume number is sent. By repeating steps S27 to S29, the air flow rate is adjusted according to the preference of the user.

In step S30, the swing adjustment switch 10
When the head swing adjustment switch 10 is operated, it is determined in step S31 to step S37 that the head swing is adjusted according to the user's preference. At this time, the LED 11 for displaying the oscillating state is made to blink according to the selected oscillating state to prompt confirmation of the oscillating state. When 1 minute has passed in step S38, the air blowing and the swinging motion are stopped in step S39, and the wind blowing amount set in the above step S27 to step S29 and the swinging state set in the step S30 to step S37 are stored in the memory. , The LED 11 corresponding to the set swing is turned on.

At step S40, the room temperature is measured. In step S41, the measured temperature is set to the minimum value T2, the A counter is set to 3, and the B counter is set to 10. In step S42, it is determined whether 1 minute has passed,
After 1 minute, measure the room temperature in step S43,
At step S44, the room temperature T1 measured this time is the lowest value T2.
Judge whether it is higher or not. If the measured value T1 is lower than the minimum value T2, the process proceeds to step S41. If the measured value T1 is higher than the minimum value T2 in step S44, it is determined in step S45 whether the measured value is higher than the minimum value T2 by 3 degrees or more.

If the measured value T1 is higher than the minimum value T2 by 3 degrees or more in step S45, the value obtained by subtracting 1 from the set value is set in the A counter in step S46, and the measured value is set in step S46.
At 47, it is judged whether or not the A counter has become 0. That is, it is determined whether or not the measured value T1 is higher than the lowest value T2 by 3 degrees or more for 3 minutes.

If the difference between the measured value T1 and the minimum value T2 is less than 3 degrees in step S45, and if the counter is not 0 in step S47, it is determined in step S48 whether the measured value T1 is higher than the minimum value T2 by 2 degrees or more. To determine. If it is higher than twice, a value obtained by subtracting 1 from the set value is set in the B counter in step S49, and it is determined whether or not the B counter has become 0 in step S50. That is, it is determined whether or not the state of being higher than the lowest value by two times or more has continued for 10 minutes.

If the difference between the measured value T1 and the minimum value T2 is less than 2 degrees in step S48, B is determined in step S50.
If the counter is not 0, it is judged in step S51 whether or not 8 hours have passed since the setting of the good night driving, and when 8 hours have passed, the setting of the good night driving is canceled in step S52.

If the A counter is 0 in step S47 and the B counter is 0 in step S50,
The process proceeds to step S53, and steps S53 to S60
Thus, the air flow is started at the air volume corresponding to the room temperature, and the head swing set in steps S30 to S37 is performed. That is, when the measured value T1 is higher than the lowest value T2 by 3 degrees or more for 3 minutes, and when the measured value T1 is higher than the lowest value T2 by 2 degrees or more for 10 minutes, the air conditioner operates. It is judged that it has stopped, and air blowing is started. In step S58, it is determined whether or not two hours have elapsed from the start of operation, and if two hours have elapsed, the operation is stopped in step S61,
It is designed to prevent the user from falling asleep due to being blown with air for a long time.

[0043]

As described above, according to the configuration of claim 1 of the present invention, the operation stop of the air conditioner can be detected by the change of the room temperature and the air conditioner can be automatically operated, and the user can operate the air conditioner. It is possible to solve such an inconvenience that sleep is disturbed by the difficulty in sleeping due to the suspension of driving.

According to the second aspect of the present invention, the operation stop of the air conditioner can be detected by the change of the room temperature, and the air conditioner can be automatically operated, and the user feels sleepy due to the operation stop of the air conditioner. It is possible to eliminate the inconvenience of disturbing sleep. Also, after a predetermined time has passed since the selection of the good night driving, the good night driving is automatically released, so that it is possible to eliminate the inconvenience of forgetting to cancel the good night driving and starting the operation in a room where there is no one. Produce an effect.

According to the third aspect of the present invention, the operation stop of the air conditioner can be detected by the change of the room temperature, and the air conditioner can be automatically operated, so that the user does not feel sleepy due to the operation stop of the air conditioner. It is possible to eliminate the inconvenience of disturbing sleep. Further, since the air blowing is stopped after a predetermined time has passed from the start of the air blowing, there is an effect that it is possible to prevent chilling due to long-time air blowing.

According to the fourth aspect of the present invention, it is possible to detect the operation stop of the air conditioner by the change of the room temperature and automatically operate the air conditioner, and the user feels sleepy due to the operation stop of the air conditioner. It is possible to eliminate the inconvenience of disturbing sleep. Further, since the head is shaken together with the blowing of air, there is an effect that it is possible to prevent chills due to intensive blowing of air for a long time.

According to the configuration of claim 5 of the present invention, it is possible to detect the operation stop of the air conditioner by the change of the room temperature and automatically operate the air conditioner, and the user feels sleepy due to the operation stop of the air conditioner. It is possible to eliminate the inconvenience of disturbing sleep. Further, since the left and right swing and the upper and lower swing are performed together with the blowing of air, it is possible to more reliably prevent the chill from falling asleep due to intensive blowing of air for a long time.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the same main routine.

FIG. 3 is a flowchart showing the same main routine.

FIG. 4 is a flowchart showing the same main routine.

FIG. 5 is a flowchart showing the same automatic driving routine.

FIG. 6 is a flow chart showing the same night driving routine.

FIG. 7 is a flowchart showing the same night driving routine.

FIG. 8 is a flowchart showing the same night driving routine.

FIG. 9 is a flow chart showing the same night driving routine.

FIG. 10 is a flowchart showing the same nighttime driving routine.

FIG. 11 is a diagram showing a relationship between the room temperature and the air volume.

FIG. 12 is a bottom view of a main part of the stand.

13 is a cross-sectional view taken along the line AA of FIG.

FIG. 14 is a sectional view taken along line BB in FIG.

FIG. 15 is an exploded perspective view of the relevant part.

FIG. 16 is a cross-sectional view of the relevant part.

FIG. 17 is a plan view of the operation unit.

FIG. 18 is a side view of the fan.

[Explanation of symbols]

 3 Base 4 Operation part 13 Temperature sensor 27 Left / right swing motor 32 Swing center adjuster 39 Fan head 42 Electric motor 43 Blower fan 47 Vertical swing motor 54 Control circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshihiro Suhara 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (5)

[Claims] 1. An electric motor for rotationally driving a blower fan, an operating section for instructing the rotation of the electric motor, a temperature sensor for detecting an ambient temperature, and a predetermined temperature rise from a minimum temperature after selecting a good night operation, the electric motor is driven. An electric fan provided with a control circuit for driving. 2. An electric motor for rotationally driving a blower fan, an operating section for instructing the rotation of the electric motor, a temperature sensor for detecting an ambient temperature, and a predetermined temperature rise from the minimum temperature after the selection of the good night operation. An electric fan provided with a control circuit which is driven to cancel the sleep operation after a predetermined time has passed after the sleep operation is selected. 3. An electric motor for rotationally driving a blower fan, an operating section for instructing the rotation of the electric motor, a temperature sensor for detecting an ambient temperature, and a predetermined temperature rise from a minimum temperature after a good night operation is selected to drive the electric motor. An electric fan provided with a control circuit for driving and stopping the operation of the electric motor after a lapse of a predetermined time. 4. An electric fan head having an electric motor for rotationally driving a blower fan, a base for supporting the electric fan head, and a left / right swinging head for swinging the electric fan head in the left / right direction with respect to the base. A fan provided with a motor, a temperature sensor for detecting an ambient temperature, and a control circuit for driving the electric motor and the left and right swing motors when a predetermined temperature rises from a minimum temperature after selecting a good night operation. . 5. A fan head having an electric motor that rotationally drives a blower fan, a base for supporting the fan head, and a left and right swing for swinging the fan head in the left-right direction with respect to the base. A motor, a vertical swing motor that vertically swings the fan head with respect to the base, a temperature sensor that detects the ambient temperature, and a predetermined temperature rise from the minimum temperature after selecting the good night operation, the motor is turned on. An electric fan provided with a control circuit for driving the left and right swing motor and the vertical swing motor.