JP2001012384A - Electric fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the temperature in a room accurately by improving the follow up property against the temperature change in the room without hurting an appearance. SOLUTION: An electric fan is provided with a base 1, a back cover 34 for closing the lower opening of the base 1, a stand erected from the base 1, a fan head supported by this stand and having the motor for driving a ventilation fan and a temperature sensor 33 provided on the base 1 for detecting the surrounding temperature, and controls the output of the motor based on the output of the temperature sensor 33. In this electric fan, at least bottom surface of the back cover 34 is formed by a heat conductive member and the bottom surface of the bask cover 34 is connected with the temperature sensor 33 heat conductively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan whose operation can be controlled according to the temperature in a room.

[0002]

2. Description of the Related Art As a fan of this type, for example, a storage section for storing a temperature sensor is formed in a power cord storage chamber formed on a synthetic resin base of the fan, and the storage section is connected to the power cord storage chamber via a power cord storage chamber. Japanese Patent Application Laid-Open No. 6-264890 (F0) discloses a fan that detects a change in room temperature by communicating with outside air and controls the amount of air blown according to the room temperature detected by a temperature sensor.
4D 25/08).

[0003] However, since the cord storage room is surrounded by a synthetic resin having poor heat conductivity, its ability to follow room temperature changes is poor.

Therefore, for example, when the temperature of the room is lowered by operating the air conditioner, the temperature in the cord storage room is not yet sufficiently lowered even though the room temperature is lowered. Has a drawback that the user senses discomfort by detecting a relatively high temperature in the cord storage room and driving the cord at a flow rate corresponding to the detected temperature.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and it is possible to accurately detect a room temperature by improving the followability to a room temperature change without deteriorating the appearance. It is an object to provide a fan.

[0006]

A first means for solving the above-mentioned problems includes a base, a back cover for closing a lower surface opening of the base, a stand erected from the base, A fan, which is supported and has a fan head having a blower fan driving motor, and a temperature sensor provided on the base and detecting an ambient temperature, and controlling an output of the motor based on an output of the temperature sensor. At least the bottom surface of the back cover is formed of a heat conductive member, and the back cover bottom surface and the temperature sensor are thermally conductively connected.

[0007] A second means for solving the above problems is as follows.
A base, a back cover for closing a lower surface opening of the base, a stand erected from the base, a fan head supported by the stand and having an electric motor for driving a blower fan; And a temperature sensor for detecting the temperature of the electric motor, wherein the fan controls the output of the electric motor based on the output of the temperature sensor. The holder is provided with a fixing portion inserted into the boss and abutting on the back cover, and the holder and the back cover are formed of a heat conductive member.

[0008] In the second means for solving the above-mentioned problems, it is preferable that the fixing portion and the boss are provided with engaging means for engaging each other to position the holder.

In the first means and the second means for solving the above-mentioned problems, the stand is provided with a rib for surrounding the temperature sensor and for forming a sensor storage compartment in the vicinity of or in contact with the back cover. Preferably, it is provided.

[0010] In the first means and the second means for solving the above-mentioned problems, it is preferable that a vent hole is formed on an upper surface of the stand facing the temperature sensor.

In the first means and the second means for solving the above-mentioned problems, a closing member having a ventilation hole and covering the temperature sensor is provided on an upper surface of a stand facing the temperature sensor, Preferably, the closing member is formed of a heat conductive member.

[0012]

FIG. 1 shows a first embodiment of the present invention.
This will be described in detail below with reference to FIG.

1 is a base, 2 is a stand detachably mounted on the base 1, 3 is an elevating pipe that moves up and down the stand 2 so as to be able to move up and down, and 4 is an elevating angle adjustable above the elevating pipe 3. A left and right oscillating motor that oscillates a fan head 5 to be described later in the left and right direction with a supported neck piece.
(Not shown).

Reference numeral 5 denotes a fan head rotatably supported by the neck piece 4 in the left-right direction. An electric motor for rotating the blower fan 6 and a motor for oscillating the fan head 5 vertically. (Neither is shown). Reference numeral 7 denotes a guard mounted on the fan head 5 and surrounding the blower fan 6. Reference numeral 8 denotes a power cord for supplying power to a motor or the like.

Reference numeral 9 denotes an operation unit formed on the base 1. Reference numeral 10 denotes an on / off / air volume button provided in the operation unit 9, and each time the button is pressed, the air volume and the stop are switched in order. Reference numeral 11 denotes an air volume display lamp provided in the operation unit 9, which displays an air volume set by an on / off / air volume button 10 or a remote controller 15 described later. Reference numeral 12 denotes a timer display lamp provided in the operation section 9 for displaying a timer time set by a remote controller 15 described later.

Numeral 13 denotes an air conditioner & sleep button arranged in the operation section 9, and each time the button is pressed, the set temperature at which the operation is automatically started is sequentially switched. When the temperature at which the automatic operation is started by pressing the air conditioner & good night button 13 is set, a temperature sensor 33 to be described later detects the room temperature, and starts automatically when the room temperature becomes higher than the set temperature, and automatically stops when the room temperature becomes lower. It is supposed to.
Reference numeral 14 denotes a set temperature display lamp provided in the operation section 9 for displaying a temperature set by an air conditioner & sleep button 13 or a remote controller 15 described later.

15 is removably housed in the base 1,
It is a remote controller for remotely controlling an electric motor and the like. Reference numeral 16 denotes an on / off button provided on the remote controller 15. Each time the button is pressed, the operation of the motor is switched between start and stop. 17
Is an air conditioner & sleep button arranged on the remote controller 15, and has the same function as the air conditioner & sleep button 13.

Reference numeral 18 denotes a swing button arranged on the remote controller 15. Each time the button is pressed, the swing is switched between a vertical swing, a horizontal swing, and a three-dimensional swing combining up, down, left, and right. Reference numeral 19 denotes a swing stop button provided on the remote controller 15, and when pushed, stops swinging. Reference numeral 20 denotes an air volume button disposed on the remote controller 15, and the air volume is switched each time the button is pressed. Reference numeral 21 denotes a timer button provided on the remote controller 15, and the timer time is sequentially switched each time the button is pressed.

Reference numeral 22 denotes an opening formed on the upper surface of the base 1, and reference numeral 23 denotes a locking portion, which is constituted by a rib formed on the periphery of the opening 22. Reference numeral 24 denotes a closing member made of a synthetic resin that covers a temperature sensor 33 described later. The closing member 24 has a shape exposed from the upper surface of the base 1 and has a plurality of slits 25. It has an engagement claw 26. By inserting the closing member 24 into the opening 22 from the upper surface of the base 1, the engaging claw 26 is engaged with the locking portion 23 so that the closing member 24 is mounted on the base 1.

Reference numeral 27 denotes a holder made of a heat conductive member such as a metal for mounting a temperature sensor 33 to be described later. The holder 27 forms a fixing portion 29 which is inserted into the periphery of a boss 28 in the vicinity of the opening 22. When inserted into the boss 28, the holding portion 30 is located in the closing member 24 and is close to the engaging claw 26. 31 is an engagement groove formed in the fixing portion 29,
The holder 27 is prevented from rotating by engaging with the rib 32 formed on the peripheral edge of the holder 28. Further, when the bottom of the engagement groove 31 comes into contact with the rib 32, the tip of the boss 28 and the tip of the fixing portion 29 are located on substantially the same plane.

Reference numeral 33 denotes a temperature sensor mounted on the holding portion 30 of the holder 27, reference numeral 34 denotes a back cover made of a heat conductive member such as metal for closing the entire back surface of the base 1, and reference numeral 35 denotes a boss
By fixing the back cover 34 with screws 35 using screws fixed to the holder 28, the holder 27 is fixed and comes into contact with the back cover 34. Numeral 36 denotes a rib formed on the periphery of the opening 22 of the stand. The rib 36 approaches or comes into contact with the back cover 34 to form a sensor storage chamber 37.

Next, the order in which the temperature sensor 33 is mounted on the base 1 will be described in detail with reference to FIGS.

First, the closing member 24 is inserted into the opening 22 formed in the base 1 from the upper surface side of the base 1. Closure member
When the opening 24 is inserted into the opening 22, the engaging claw 26 of the closing member 24 engages with the locking portion 23 formed on the peripheral edge of the opening 22 so that the closing member
24 is installed.

Next, the holder 27 on which the temperature sensor 33 is mounted
Is inserted into the boss 28. As the fixing portion 29 is inserted into the boss 28, the engaging groove 31 formed in the fixing portion 29
As a result, the holder 27 is positioned to prevent rotation, and the bottom of the engaging groove 31 contacts the rib 32 to determine the insertion position.

When the fixing portion 29 is inserted into the boss 28, the holder
Since the mounting portion 30 of the closing member 27 comes close to between the engaging claws 26 of the closing member 24, the closing member 24 is prevented from coming off by the mounting portion 30 and is prevented from rotating.

Further, since the holder 27 is inserted and mounted on the boss 28 for fixing the back cover 34, the back cover 34 is screwed.
By fixing with 35, the holder 27 is fixed, and the fixing portion 29 of the holder 27 abuts on the back cover.

Since the back cover 34 is formed of a heat conductive member, the back cover 34 has good follow-up properties with respect to a change in room temperature. Temperature sensor
Since 33 is in contact with the back cover 34 via the metal holder 27, a change in room temperature can be quickly detected via the back cover 34 and the holder 27.

Further, since the sensor storage chamber 37 is isolated from the control circuit for controlling the motor and the like by the rib 36, the heat from the control circuit is prevented from being transmitted to the temperature sensor 33, and the temperature due to the heat transmitted from the control circuit is prevented. In addition to preventing erroneous detection of the sensor 33, the strength of the base 1 can be improved because the rib 36 is close to or in contact with the back cover 34.

Furthermore, even if heat is transmitted into the sensor storage chamber 37 via the rib 36, the closing member that covers the temperature sensor 33
24 has a slit 25, so the slit 25
The heat can be radiated to the outside through the control circuit, and the erroneous detection of the temperature sensor 33 due to the heat transmitted from the control circuit can be reliably prevented. The ability to follow up on can be improved.

As another method for improving the ability to follow a change in room temperature, a structure in which a heat conductive member is mounted on the surface of the stand 1 and the room temperature is detected via the heat conductive member is considered. Since a conductive member is required and the heat conductive member is visible, there is a disadvantage in that the appearance is impaired.

According to the structure of the present invention, the back cover 34 constituting the electric fan can be used also as a heat conducting member.
Since the back cover 34 is located on the back surface of the stand 1 that is not visible in appearance, there is no restriction on the appearance.

Although the closing member 24 is made of a synthetic resin in the present embodiment, the closing member 24 may be made of a heat conductive member such as a metal.

In the above configuration, since the closing member 24 is formed of a heat conductive member, even if heat is transmitted into the sensor storage chamber 37 via the rib 36, the closing member 24 is quickly transmitted to the closing member 24 and the slit is formed. Since the heat can be dissipated through the sensor member 25, it is possible to more reliably prevent the temperature sensor 33 from erroneously detecting due to the heat transmitted into the sensor storage chamber 37, and to prevent a change in room temperature from having a good thermal conductivity with the closing member 24. Can be detected even through the interface, so that the ability to follow a change in room temperature can be further improved.

In the present embodiment, the back cover 34 is entirely made of metal. However, the bottom surface of the back cover 34 is made of metal, and the back cover 34 outside the area where the fixing portion 29 of the holder 27 abuts. May be made of a material such as resin.

FIG. 13 shows a second embodiment. In the first embodiment, the holder 27 is entirely made of a heat conductive member such as a metal. The contact portion to the back cover 34 is formed by a heat conductive member,
Even when the holding portion 30 and the contact portion of the fixing portion 29 to the back cover 34 are connected by a heat conductive member, and the other portions are made of synthetic resin, the same operation and effect as those of the first embodiment can be obtained.

FIG. 14 shows a third embodiment. In the first embodiment, all the holders 27 are made of a heat conductive member such as metal, but all the holders 27 are made of synthetic resin. And a connecting member 38 made of a heat conductive member.
Thus, even when the back cover 34 and the temperature sensor 33 are connected, the same operation and effect as those of the first embodiment can be obtained.

[0037]

According to the structure of the first aspect of the present invention, the temperature of the room can be detected from the bottom surface of the back cover made of a heat conductive member, and the room temperature can be changed without compromising the appearance. This has the effect that the temperature of the target can be accurately detected.

According to the configuration of the second aspect of the present invention, the temperature in the room can be detected from the bottom surface of the back lid made of a heat conductive member with a simple configuration, so that it can follow the change in room temperature without impairing the appearance. This has the effect that the temperature at room temperature can be accurately detected.

According to the third aspect of the present invention, the holder can be positioned by engaging the fixing portion of the holder with the boss, and the fixing portion of the holder can be securely brought into contact with the back cover. And the like.

According to the configuration of the fourth aspect of the present invention, the ribs surrounding the temperature sensor can isolate the sensor storage chamber from the control circuit for controlling the electric motor and the like, so that the heat from the control circuit is transmitted to the temperature sensor. By preventing the temperature from being transmitted, erroneous detection of the room temperature by the temperature sensor can be prevented.

Further, since the ribs are close to or in contact with the back cover, there is an effect that the strength of the stand can be improved.

According to the configuration of the fifth aspect of the present invention, the room temperature can be detected even through the slit, the followability to the change in the room temperature can be improved, and the control circuit for controlling the electric motor and the like can store the sensor. The heat transmitted to the room can be released to the outside through the slit, and effects such as erroneous detection of room temperature can be prevented.

According to the configuration of claim 6 of the present invention, the room temperature can be detected even through the slit made of a heat conductive member, and the followability to the change in room temperature can be further improved. The heat transmitted from the control circuit to be controlled into the sensor storage chamber can be released to the outside through the slit made of the heat conductive member, and the effect of reliably preventing erroneous detection of room temperature can be achieved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part showing a mounted state of a temperature sensor according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part viewed from the other direction.

FIG. 3 is an external perspective view of the same.

FIG. 4 is a rear view showing a mounting state of the temperature sensor.

FIG. 5 is an enlarged back view showing a mounting state of the temperature sensor.

FIG. 6 is a plan view of the operation unit.

FIG. 7 is a diagram showing an order of mounting the temperature sensors.

FIG. 8 is a diagram showing an order of mounting the temperature sensors.

FIG. 9 is a diagram showing an order of mounting the temperature sensors.

FIG. 10 is a diagram showing the order in which the temperature sensors are mounted as viewed from the other direction.

FIG. 11 is a diagram showing an order of mounting the temperature sensors as viewed from the other direction.

FIG. 12 is a view showing the order in which the temperature sensors are mounted as viewed from the other direction.

FIG. 13 is a cross-sectional view of a main part showing a mounted state of a temperature sensor according to a second embodiment of the present invention.

FIG. 14 is a cross-sectional view of a main part showing a mounted state of a temperature sensor according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Stand 5 Fan head 24 Closure member 27 Holder 33 Temperature sensor 34 Back cover

Claims (6)

[Claims] 1. A base, a back cover for closing a lower surface opening of the base, a stand erected from the base, a fan head supported by the stand and having an electric motor for driving a blower fan, and the base Provided, and a temperature sensor for detecting the temperature of the surroundings, in a fan that controls the output of the electric motor based on the output of the temperature sensor, at least the bottom surface of the back cover is formed of a heat conductive member, A fan wherein the bottom surface of the back cover and the temperature sensor are thermally conductively connected. 2. A base, a back cover for closing an opening of a lower surface of the base, a stand erected from the base, a fan head supported by the stand and having an electric motor for driving a blower fan; And a temperature sensor for detecting an ambient temperature, wherein the fan controls the output of the electric motor based on the output of the temperature sensor. An electric fan, wherein a holder for holding a temperature sensor is provided with a fixing portion inserted into the boss and abutting on the back cover, and the holder and the back cover are formed of a heat conductive member. 3. An electric fan according to claim 2, wherein said fixing portion and said boss are provided with engaging means for engaging each other to position said holder. 4. The stand according to claim 1, wherein the stand is provided with a rib surrounding the temperature sensor and defining a sensor accommodating chamber in proximity to or in contact with the back cover. Fan. 5. The electric fan according to claim 1, wherein a ventilation hole is formed on an upper surface of the stand facing the temperature sensor. 6. A stand which has a ventilation hole on the upper surface of the stand facing the temperature sensor and which is provided with a closing member for covering the temperature sensor, wherein the closing member is formed of a heat conductive member. The electric fan according to claim 1.