JP2011157868A - Ceiling fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceiling fan solving an unpleasant feeling to a user caused by wind speed and a feeling of fear thereto caused by blades rotating at high speed. <P>SOLUTION: A control means 7 is configured to control the rotational speed of a motor 2 by a change in time until a signal transmitted by a signal transmission means 8 is reflected on a floor and received by a signal reception means 9. Thereby, it is possible to provide such effects that the unpleasant feeling is solved by slowing down the rotational speed when the user comes to the vicinity and operation is stopped when the user gets too close. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a ceiling fan used in a general home or office.

  The ceiling fan used in combination with the air conditioner supplies cool air from the ceiling, diffuses cool air that is biased to the floor surface during cooling, and has the function of making the indoor temperature uniform, comfortable and healthy, And the spread is spreading from the economical effect which can carry out the energy saving operation of the cooling equipment.

  Conventionally, a ceiling fan that can be operated with a remote controller is known as an example of this type of ceiling fan (see, for example, Patent Document 1).

  Hereinafter, the ceiling fan will be described with reference to FIG.

  As shown in FIG. 11, an abduction type motor 102 whose center is supported by a shaft 101, a blade 104 fixed to the rotor 103 of the motor, and a lower surface of the stator 105 of the motor 102 are fixed. A control box 106, a control means 107 housed in the control box 106, and a light receiving unit 108 for receiving an infrared signal of the remote controller downward on the lower surface of the control box 106.

  In the above configuration, when the ceiling fan is in operation, the light receiving unit 108 receives an infrared signal from a remote controller (not shown), converts it into an electrical signal, and inputs it to the control means 107. The control means 107 energizes the motor 102 so that the rotation speed is regulated in accordance with the wind speed setting instruction signal from the remote controller, and the blades 104 are rotated so that the entire room is blown.

Japanese Patent Laid-Open No. 10-306792

  In such a conventional ceiling fan, when the user is directly under the main body, the wind speed is too high and it becomes uncomfortable, and when the installation height is low, the blades that rotate at high speed are afraid. It had the problem of end.

  Therefore, the present invention is to solve such a conventional problem, and an object of the present invention is to provide a ceiling fan that can be used comfortably and safely by a user.

  In order to achieve this object, an abduction type motor whose center is supported by a shaft, a blade fixed to the rotor of the motor, and a lower surface of the stator of the motor is fixed to the motor. Control means for controlling the number of revolutions, signal transmission means arranged on the lower surface of the control means for transmitting a signal toward the floor, and signals reflected from the floor arranged on the same plane as the signal transmission means Comprising signal receiving means, wherein the control means controls the number of revolutions of the motor according to a change in time from when the signal transmitting means transmits the signal to when the signal receiving means receives the reflected signal. This achieves the intended purpose.

  Further, the ceiling fan of the present invention is configured to use an infrared signal as the signal transmitting means and the signal receiving means.

  In addition, the ceiling fan of the present invention is configured to use ultrasonic signals as signal transmitting means and signal receiving means.

  Further, the ceiling fan of the present invention is configured such that when the time from when the signal transmitting unit transmits a signal to when the reflected signal is received by the signal receiving unit is shorter than the initial detection time, the motor rotates. The number was lowered.

  In the ceiling fan of the present invention, the time from when the signal transmitting unit transmits a signal to when the reflected signal is received by the signal receiving unit is less than 1/5 of the initial detection time. The motor was stopped.

  In addition, the ceiling fan of the present invention is notified by a notification sound that the motor has stopped.

  In addition, the ceiling fan of the present invention notifies the motor stop by an LED display.

  Further, the ceiling fan of the present invention stops the motor when the time from when the signal transmitting means transmits a signal to when the reflected signal is received by the signal receiving means becomes longer than the initial detection time. And no longer accepts driving instructions.

  In addition, the ceiling fan of the present invention intermittently performs signal transmission from the signal transmission means only when the detected illuminance of the illuminance detection unit provided in the control means is equal to or lower than the first specified value.

  In addition, the ceiling fan of the present invention stops the signal transmission from the signal transmission unit only when the detected illuminance of the illuminance detection unit provided in the control unit is equal to or less than the second specified value.

  In addition, the ceiling fan of the present invention intermittently transmits a signal from the signal transmission means when no person is detected by the human detection unit provided in the control means.

  In addition, the ceiling fan of the present invention is configured to stop signal transmission from the signal transmission means when a person detection unit provided in the control means does not detect a person for a specified time.

  According to the present invention, an abduction type motor whose center is supported by a shaft, a blade fixed to the rotor of the motor, and a rotational speed of the motor fixed to the lower surface of the stator of the motor is controlled. Control means for transmitting, signal transmitting means disposed on the lower surface of the control means for transmitting signals toward the floor, and signal receiving means for receiving reflected signals from the floor disposed on the same plane as the signal transmitting means. And the control means is configured to control the number of revolutions of the motor by a change in time from when the signal transmitting means transmits the signal to when the signal receiving means receives the reflected signal. When the user comes to the vicinity, it is possible to provide a ceiling fan with an advantageous effect that the uncomfortable feeling can be eliminated by reducing the rotational speed and the operation can be stopped when approaching too much.

Structure diagram of ceiling fan of embodiment 1 of the present invention Same control block diagram Same control flowchart Correlation diagram between equivalent distance difference and rotation speed Structure diagram of ceiling fan of embodiment 2 of the present invention Correlation diagram between equivalent distance difference and rotation speed Control block diagram of Embodiment 3 of the present invention Same control flowchart Control block diagram of Embodiment 4 of the present invention Same control flowchart External perspective view of conventional ceiling fan

  According to a first aspect of the present invention, an abduction type motor whose center is supported by a shaft, a blade fixed to the rotor of the motor, and a lower surface of the stator of the motor are fixed to the motor. A control means for controlling the number of rotations, a signal transmission means for transmitting a signal toward the floor surface disposed on the lower surface of the control means, and a reflected signal from the floor surface disposed on the same plane as the signal transmission means. Signal receiving means for controlling the number of revolutions of the motor according to a change in time from when the signal transmitting means transmits the signal to when the signal receiving means receives the reflected signal. It has a configuration. Thereby, when a user comes to the vicinity, there exists an effect of reducing discomfort by making a rotation speed low.

  The invention described in claim 2 has a configuration in which the signal transmitted from the signal transmitting means is infrared. As a result, since the signal can be coded, there is an effect that the signal can be accurately detected without being influenced by indoor illumination light or the like.

  The invention described in claim 3 has a configuration in which the signal transmitted from the signal transmitting means is an ultrasonic wave. As a result, there is an effect that it can be accurately detected without being affected by the material and shape of the reflector.

  According to a fourth aspect of the present invention, the time from when the signal transmitting means transmits a signal to when the reflected signal is received by the signal receiving means is less than 1/5 of the initial detection time. In some cases, the motor is stopped. Thereby, when a user comes to the vicinity, there exists an effect of reducing discomfort by making a rotation speed low.

  In the invention according to claim 5, the time from when the signal transmitting unit transmits a signal to when the reflected signal is received by the signal receiving unit is less than 1/5 of the initial detection time. In some cases, the motor is stopped. As a result, when the user gets too close to the product, the operation is stopped and the safety is ensured.

  According to a sixth aspect of the present invention, a notification sound generator is provided in the control means, and a notification sound is generated when the motor is stopped. This produces an effect of notifying the user that the user has come too close to the product.

  The invention according to claim 7 has a configuration in which a light emitting section is provided in the control means, and the light emitting diode is turned on when the motor is stopped. This produces an effect of visually informing that the user has approached the product too much.

  The invention according to claim 8 is characterized in that when the time from when the signal transmitting means transmits a signal to when the reflected signal is received by the signal receiving means becomes longer than the initial detection time, the motor is turned off. It has a configuration that stops and does not accept driving instructions. As a result, if an abnormality occurs in the mounting part of the product and the mounting angle of the product changes and the detection time becomes long, the product may fall, so that the operation is stopped and the operation cannot be restarted to ensure safety. Play.

  According to the ninth aspect of the present invention, an illuminance detection unit is provided in the control unit, and signal transmission from the signal transmission unit is intermittent only when the detected illuminance of the illuminance detection unit is equal to or less than a first specified value. It has a configuration designed to be performed manually. As a result, when the illuminance is low, such as at night, the movement of a person is reduced, so that it is possible to reduce wasteful power by making the detection interval intermittent.

  The invention according to claim 10 has a configuration in which the signal transmission from the signal transmission means is stopped only when the detected illuminance of the illuminance detection unit is equal to or less than a second specified value. As a result, there is no need to detect a person in the dark, such as when going to bed, so that it is possible to reduce useless power by stopping the detection.

  According to an eleventh aspect of the present invention, there is provided a configuration in which a human detection unit is provided in the control unit, and signal transmission from the signal transmission unit is intermittently performed when no person is detected by the human detection unit. Have. Thereby, when there is no person, there is an effect that wasteful power can be reduced by making the detection interval intermittent.

  The invention described in claim 12 has a configuration in which signal transmission from the signal transmission means is stopped when a person is not detected for a predetermined time or more by the human detection unit. As a result, in the absence of the specified time or more, there is an effect that useless power can be reduced by stopping detection.

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

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

  An abduction type motor 2 pivotally supported by a shaft 1 at its center, a blade 4 fixed to the rotor 3 of the motor 2, a control box 6 fixed to the lower surface of the stator 5 of the motor 2, Control means 7 accommodated in the control box 6, signal transmitting means 8 for transmitting a signal downward to the bottom surface of the control box 6, and signal receiving means 9 for receiving a reflected signal from the floor surface It consists of

  In the above configuration, when the ceiling fan is energized, the control means 7 instructs the signal transmission means 8 to emit an infrared signal five times every second, and at the same time, detects the reception signal from the signal reception means 9. Yes. Here, as shown in FIG. 3, the control means 7 firstly, the difference between the time when the signal transmission means 8 starts transmitting infrared rays and the time when the signal reception means 9 starts receiving infrared rays, that is, the signal transmission means 8 transmits signals. The time from when the signal is received to the time when the signal receiving means 9 receives the reflected signal is stored five times, the initial detection time which is the average value is calculated, and the initial value T1 corresponding to the distance to the floor at the initial stage of installation is calculated. Register and stop the infrared transmission of the signal transmission means 8. Thereafter, at the same time as the operation of the ceiling fan, the control means 7 measures the time from when the signal transmitting means 8 transmits an infrared signal every second to when the signal receiving means 9 receives the reflected signal. This is converted to a distance equivalent value T2, and the number of revolutions of the motor 2 is reduced by the change compared to the distance equivalent initial value T1, that is, the difference from the distance equivalent initial value T1 as shown in FIG.

  That is, when the rotation speed of the initial motor 2 is 500 rpm, the distance equivalent value T2 is 4/5 or less with respect to the distance equivalent initial value T1, and when it is 3/5 or less, it becomes 350 rpm and 2/5 or less. When it becomes, it is changed to 200 rpm, and when it becomes 1/5 or less, it is changed to 10 rpm.

  As described above, when the user is not in the vicinity, it is operated with the normal air volume, and when the user is in the vicinity, the air volume is reduced so as not to cause discomfort. can do.

  In this embodiment, distance measurement is performed using an infrared signal, but there is no difference in effect even if an ultrasonic signal is used.

  Further, in this embodiment, when the distance equivalent value measured with respect to the distance equivalent initial value becomes 1/5 or less, the rotation speed is reduced to 10 rpm. You may make it implement the notification by lighting up.

(Embodiment 2)
The present embodiment is the same as the control method of the first embodiment, and only the determination process is different. The same components are given the same numbers, and detailed description thereof is omitted.

  When the ceiling fan is energized, the control means 7 instructs the signal transmission means 8 to emit an infrared signal five times every second, and at the same time detects the reception signal from the signal reception means 9. Here, as shown in FIG. 3, the control means 7 first stores the difference between the time when the signal transmission means 8 starts transmitting infrared rays and the time when the signal reception means 9 starts receiving infrared rays for five times, and is an average value thereof. The initial detection time is calculated and registered as an initial value T1 corresponding to the distance to the floor surface at the initial stage of installation, and the infrared transmission of the signal transmission means 8 is stopped. Thereafter, at the same time as the operation of the ceiling fan is started, the control means 7 causes the signal transmitting means 8 to transmit an infrared signal every second, and the signal receiving means 9 receives the reflected signal from when the signal transmitting means 8 transmits the signal. The motor 2 is converted into the distance equivalent value T2 while measuring the time up to the time, and compared with the already registered distance equivalent initial value T1, its change, that is, the difference between the distance equivalent initial value T1 as shown in FIG. The number of rotations is reduced.

  Here, as shown in FIG. 5 and FIG. 6, a problem occurs in the mounting state of the ceiling fan itself, and if the mounting angle changes, it takes a long time to reach the floor surface of the signal transmitted from the signal transmission means 8. The distance equivalent value T2 depending on the time from when the signal transmitting means 8 transmits a signal to when the signal receiving means 9 receives the reflected signal becomes longer than the distance equivalent initial value T1.

  That is, if the initial rotation speed of the motor 2 is 500 rpm, the control means 7 stops the rotation of the motor 2 and does not accept an operation signal when the current distance equivalent value T2 is 6/5 or more of the distance equivalent initial value T1. It is what I did.

  As described above, when an abnormality occurs in the ceiling fan mounting state, it is possible to prevent the ceiling fan from falling by performing an emergency stop and not operating.

(Embodiment 3)
The present embodiment is obtained by adding an illuminance detection unit 10 for detecting the brightness of the room to the first embodiment, and the same components are given the same reference numerals and detailed description thereof is omitted.

  As shown in FIGS. 7 and 8, simultaneously with the start of the operation of the ceiling fan, the control means 7 causes the signal transmission means 8 to transmit an infrared signal every second, and the time and signal when the signal transmission means 8 transmits the signal. The receiving means 9 converts it into a distance equivalent value while measuring the difference from the time when the signal is received. Here, from the idea that the frequency of transmitting infrared signals can be varied by making the indoor brightness correspond to the amount of human activity, the control means 7 determines that the signal level detected by the illuminance detection unit 10 is the first specified level. When the value A falls below the value A, the transmission interval of the infrared signal of the signal transmission means 8 is changed from every 1 second to every 10 seconds.

  In addition, when the signal level detected by the illuminance detection unit 10 falls below the second specified value B, the transmission of the infrared signal by the signal transmission means 8 is stopped.

  As described above, it is judged that the human activity is reduced by darkening by detecting the brightness of the room, and the infrared transmission interval is extended by judging whether it is turned off by going to bed, or wasted power consumption by stopping it. Can be suppressed.

(Embodiment 4)
The present embodiment is obtained by adding a person detection unit 11 that detects the presence or absence of a person in the room to the first embodiment, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  As shown in FIGS. 9 and 10, simultaneously with the start of the operation of the ceiling fan, the control means 7 causes the signal sending means 8 to send an infrared signal every second, and the signal sending means 8 sends a signal from when the signal is sent. While the time until the reception means 9 receives the reflected signal is measured, it is converted into a distance equivalent value. Here, the control means 7 changes the transmission interval of the infrared signal of the signal transmission means 8 from every second to every 10 seconds when the signal level detected by the human detection unit 11 does not detect a person. It is.

  In addition, when the signal level detected by the human detection unit 11 is not continuously detected for 10 minutes or more, the transmission of the infrared signal of the signal transmission means 8 is stopped.

  As described above, by detecting the presence or absence of a person in the room, it is possible to extend the infrared transmission interval or to stop useless power consumption.

  The ceiling fan according to the present invention can be applied to operation control of an air conditioner installed indoors because it reduces the uncomfortable feeling that the wind directly hits the user.

DESCRIPTION OF SYMBOLS 1 Shaft 2 Motor 3 Rotor 4 Blade 7 Control means 8 Signal transmission means 9 Signal reception means

Claims (12)

An abduction type motor that is pivotally supported by a shaft at its center, blades fixed to the rotor of the motor, control means fixed to the lower surface of the stator of the motor and controlling the number of revolutions of the motor, A signal transmitting means disposed on the lower surface of the control means for transmitting a signal toward the floor; and a signal receiving means disposed on the same plane as the signal transmitting means for receiving a reflected signal from the floor surface, the control means comprising: A ceiling fan configured to control the rotational speed of the motor according to a change in time from when the signal transmitting unit transmits the signal to when the signal receiving unit receives the reflected signal. The ceiling fan according to claim 1, wherein the signal transmitted from the signal transmitting means is infrared. 2. The ceiling fan according to claim 1, wherein the signal transmitted from the signal transmitting means is an ultrasonic wave. The number of revolutions of the motor is reduced when the time from when the signal transmitting means transmits a signal to when the reflected signal is received by the signal receiving means is shorter than the initial detection time. The ceiling fan according to 1. When the time from when the signal transmitting means transmits a signal to when the reflected signal is received by the signal receiving means is less than 1/5 of the initial detection time, the motor is stopped. The ceiling fan according to claim 1. The ceiling fan according to claim 5, wherein a notification sound generating unit is provided in the control means so that a notification sound is generated when the motor is stopped. The ceiling fan according to claim 5, wherein a light emitting unit is provided in the control means, and the light emitting diode is turned on when the motor is stopped. When the time from when the signal transmitting means transmits a signal to when the reflected signal is received by the signal receiving means becomes longer than the initial detection time, the motor is stopped so that an operation command is not accepted. The ceiling fan according to claim 1. The illuminance detection unit is provided in the control unit, and signal transmission from the signal transmission unit is intermittently performed only when the detected illuminance of the illuminance detection unit is equal to or less than a first specified value. Ceiling fans. The ceiling fan according to claim 9, wherein the signal transmission from the signal transmission means is stopped only when the detected illuminance of the illuminance detection unit is equal to or less than a second specified value. The ceiling fan according to claim 1, wherein a human detection unit is provided in the control unit, and signal transmission from the signal transmission unit is intermittently performed when no person is detected by the human detection unit. The ceiling fan according to claim 11, wherein when the person is not detected for a predetermined time by the person detection unit, signal transmission from the signal transmission means is stopped.

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