CN111075736B

CN111075736B - Air-out indicating mechanism for fan and fan

Info

Publication number: CN111075736B
Application number: CN201811216642.XA
Authority: CN
Inventors: 文志华
Original assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2018-10-18
Filing date: 2018-10-18
Publication date: 2021-04-20
Anticipated expiration: 2038-10-18
Also published as: CN111075736A

Abstract

The invention discloses an air-out indicating mechanism for a fan and the fan, wherein the air-out indicating mechanism comprises: the cover shell is provided with a mounting opening; the driving device is arranged in the housing; the first linkage pieces are arranged along the circumferential direction of the mounting opening, the first linkage pieces are movably mounted in the housing, and at least one of the first linkage pieces is in transmission connection with the driving device; the air outlet is defined by the plurality of second linkage parts and the plurality of first linkage parts together. According to the air-out indicating mechanism for the fan, the air-out state of the fan can be indicated, and the energy consumption is low.

Description

Air-out indicating mechanism for fan and fan

Technical Field

The invention relates to the technical field of fans, in particular to an air outlet indicating mechanism for a fan and the fan.

Background

The fan in the related art is generally provided with a multi-gear structure such as a strong wind gear, a weak wind gear, and the like, but it is difficult for a user to distinguish which gear the fan operates at a position far from the fan. For this reason, an indicator lamp is generally provided to display the air-out state of the fan, resulting in higher energy consumption.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an air-out indicating mechanism for a fan, which can indicate the air-out state of the fan and has low energy consumption.

The invention also provides a fan.

According to the air-out indicating mechanism for the fan of the embodiment of the first aspect of the invention, the mechanism comprises: a housing having a mounting port; a drive device mounted within the housing; the first linkage pieces are arranged along the circumferential direction of the mounting opening and movably mounted in the housing, and at least one of the first linkage pieces is in transmission connection with the driving device; the second linkage pieces are respectively movably connected with the first linkage pieces in a one-to-one correspondence mode, the second linkage pieces are located on the outer sides of the first linkage pieces in the axial direction of the housing, and the second linkage pieces and the first linkage pieces jointly define an air outlet.

According to the air-out indicating mechanism for the fan, different air-out states of the fan are indicated through different movement positions of the first linkage members and the second linkage members, people can conveniently distinguish the working condition of the fan, and energy consumption is reduced.

In addition, the air-out indicating mechanism for the fan according to the embodiment of the invention also has the following additional technical characteristics:

according to some embodiments of the invention, the shape of the outlet in the first outlet state is different from the shape of the outlet in the second outlet state.

In some embodiments of the present invention, a maximum outer diameter of the air outlet in the first air outlet state is smaller than a maximum outer diameter of the air outlet in the second air outlet state.

Further, in the process of switching from the first air outlet state to the second air outlet state, the driving device drives the joint of the first linkage member and the second linkage member to move outwards along the radial direction of the air outlet; in the process of switching from the second air-out state to the first air-out state, the driving device drives the joint of the first linkage member and the second linkage member to move inwards along the radial direction of the air outlet.

Advantageously, in the first air outlet state, the plurality of first linkage members and the plurality of second linkage members are respectively parallel to the axial direction of the casing; and in the second air outlet state, the connected first linkage piece and the second linkage piece respectively approach towards each other.

In some embodiments of the present invention, the air-out indicating mechanism for a fan further includes: the screen panel, a plurality of second linkage respectively with screen panel swing joint, the screen panel is in the drive of second linkage is followed the axial displacement of housing.

Optionally, at least one of the first link member and the cover casing is provided with a first rotating shaft hole, the first rotating shaft is rotatably fitted in the first rotating shaft hole, and the first link member and the cover casing are connected through the first rotating shaft; at least one of the first linkage piece and the second linkage piece is provided with a connecting hole, a connecting rotating shaft is rotatably matched in the connecting hole, and the first linkage piece and the second linkage piece are connected through the connecting rotating shaft; at least one of the second linkage piece and the mesh enclosure is provided with a second rotating shaft hole, the second rotating shaft is rotatably matched in the second rotating shaft hole, and the second linkage piece and the mesh enclosure are connected through the second rotating shaft.

Advantageously, in the first air outlet state, the central axis of the first rotating shaft and the central axis of the second rotating shaft are not coplanar with the central axis of the connecting rotating shaft.

In some embodiments of the present invention, one of the first and second linkage members is provided with a connection boss and the other is provided with a connection groove, and the connection boss is rotatably engaged with the connection groove。

In some embodiments of the present invention, a pressing plate is disposed on the at least one first linkage member, the pressing plate is disposed obliquely relative to the first linkage member, the driving device has a push rod moving along an axial direction of the casing, and the push rod presses the pressing plate in the second air outlet state to lift the first linkage member outward along a radial direction of the air outlet.

Advantageously, the laminated plate is provided with an avoidance groove for allowing the push rod to pass through in the first air outlet state.

According to some embodiments of the invention, the driving device is plural, and the plural driving devices are arranged at intervals in a circumferential direction of the housing.

A fan according to an embodiment of the second aspect of the invention includes: a base body; the air outlet indicating mechanism is arranged on the seat body and is provided with an air outlet, and the shape of the air outlet in the first air outlet state is different from the shape of the air outlet in the second air outlet state; the impeller assembly is rotatably arranged in the air outlet indicating mechanism.

According to the fan disclosed by the embodiment of the invention, different air outlet states of the fan are indicated by changing the shape of the air outlet, so that people can conveniently distinguish the working condition of the fan, and the energy consumption is reduced.

According to some embodiments of the present invention, the wind indicating mechanism is the wind indicating mechanism for the fan according to the embodiment of the first aspect of the present invention, and the impeller assembly is located in the casing.

Optionally, the impeller subassembly includes air-out driving piece, first impeller and second impeller, the housing includes inner shell and shell, the inner shell is installed in the shell, the air-out driving piece is installed in the inner shell, first impeller with the second impeller is followed the axial arrangement of housing, first impeller with the second impeller respectively with the air-out driving piece transmission is connected in order by the air-out driving piece drive is rotatory, the installing port by the inner shell with the shell is injectd jointly, first link movably installs on the inner shell.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a perspective view of a fan according to an embodiment of the present invention in a second air-out state;

fig. 2 is a schematic structural diagram of the fan according to the embodiment of the invention in a second air outlet state;

fig. 3 is a schematic structural diagram of the fan according to the embodiment of the invention in a second air outlet state;

fig. 4 is a schematic structural diagram of the fan according to the embodiment of the invention in a second air outlet state;

fig. 5 is a perspective view of the fan according to the embodiment of the invention in a first air outlet state;

fig. 6 is a schematic structural diagram of a fan according to an embodiment of the present invention in a first air-out state;

fig. 7 is a schematic structural diagram of a fan according to an embodiment of the present invention in a first air-out state;

fig. 8 is a cross-sectional view of the fan according to the embodiment of the invention in a second air-out state;

fig. 9 is a cross-sectional view of the fan according to the embodiment of the invention in the first air-out state;

FIG. 10 is a schematic diagram of first and second linkage members of a fan according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of a first linkage member of the fan according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a second linkage member of the fan according to an embodiment of the present invention.

Reference numerals:

a fan 1,

An air outlet 11, a first rotating shaft 12, a connecting hole 13, a connecting rotating shaft 14, a second rotating shaft 15, a pressing plate 16, an avoiding groove 17,

A cover shell 100, an installation opening 101, an inner shell 110, an outer shell 120,

A driving device 200, a push rod 201,

A first linkage piece 300, a first rotating shaft hole 301, a connecting groove 302,

A second linkage member 400, a second rotating shaft hole 401, a connecting boss 402, a mesh cover 500,

Seat 20, impeller assembly 30, air-out driving member 31, first impeller 32, second impeller 33.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The following describes an air outlet indication mechanism for a fan according to an embodiment of the first aspect of the present invention with reference to the drawings. For example, the fan may be a circulation fan.

As shown in fig. 1 to 12, the air outlet indication mechanism for a fan according to an embodiment of the present invention includes: the housing 100, the driving device 200, the plurality of first linkages 300, and the plurality of second linkages 400.

Specifically, the housing 100 has a mounting opening 101. The driving device 200 is installed in the housing 100. The plurality of first linkage members 300 are arranged along the circumferential direction of the mounting opening 101, the plurality of first linkage members 300 are movably mounted in the casing 100, and at least one of the plurality of first linkage members 300 is in transmission connection with the driving device 200. The plurality of second linkage members 400 are arranged along the circumferential direction of the mounting opening 101, the plurality of second linkage members 400 are movably connected with the plurality of first linkage members 300 in a one-to-one correspondence manner, the plurality of second linkage members 400 are located outside the plurality of first linkage members 300 in the axial direction of the casing 100, and the plurality of second linkage members 400 and the plurality of first linkage members 300 define the air outlet 11 together.

According to the air-out indicating mechanism for the fan, provided by the embodiment of the invention, different air-out states of the fan are indicated through different movement positions of the plurality of first linkage members 300 and the plurality of second linkage members 400, so that people can conveniently distinguish the working condition of the fan, and the energy consumption is reduced.

Note that in the description of the present invention, "inside" refers to a side near the center of the enclosure 100, and "outside" refers to a side away from the center of the enclosure 100. For example, the inner side in the radial direction of the casing 100 refers to a side adjacent to the radial center of the casing 100; the inner side in the axial direction of the housing 100 refers to a side adjacent to the axial center of the housing 100.

According to some embodiments of the present invention, as shown in fig. 1 to 9, the shape of the outlet 11 in the first outlet state is different from the shape of the outlet 11 in the second outlet state. It can be understood that the first air outlet state may be a state in which the fan operates in a strong wind, that is, the air outlet of the air outlet 11 is a straight wind and a long-distance air supply; the second air outlet state may be a state in which the fan operates at a weak wind level, that is, the air outlet of the air outlet 11 is divergent air or short-distance air supply.

Therefore, when the fan is switched between the first air-out state and the second air-out state, the driving device 200 drives the first linkage member 300 and the second linkage member 400 to move, so that the appearance of the air outlet 11 is changed, and people far away from the fan can judge the air-out state of the fan according to the appearance of the air outlet 11.

Or, the first air outlet state may be a state where the fan operates at a warm air gear, that is, the air outlet temperature of the air outlet 11 is higher; the second air outlet state may be a state where the fan is working under a cool air stop, that is, the air outlet temperature of the air outlet 11 is low. The present invention is not particularly limited in this regard.

In some embodiments of the present invention, as shown in fig. 8 and 9, the maximum outer diameter of the outlet 11 in the first outlet state is smaller than the maximum outer diameter of the outlet 11 in the second outlet state, so that the outlet state can be determined according to the distance between the outer wall of the outlet 11 and the mounting opening 101.

Further, as shown in fig. 8 and 9, in the process of switching from the first air outlet state to the second air outlet state, the driving device 200 drives the joint of the first linkage member 300 and the second linkage member 400 to move outward along the radial direction of the air outlet 11; in the process of switching from the second air outlet state to the first air outlet state, the driving device 200 drives the joint of the first linkage member 300 and the second linkage member 400 to move inward along the radial direction of the air outlet 11. Therefore, the movement of the first linkage members 300 and the second linkage members 400 is similar to the opening and closing of petals, so that people can conveniently recognize the air outlet state of the fan.

For example, as shown in fig. 9, in the first air outlet state, the first linkage members 300 and the second linkage members 400 are respectively parallel to the axial direction of the casing 100, at this time, the longitudinal section of the air outlet 11 is substantially "|", and the casing 100 and the air outlet 11 are two-layer plane columns; as shown in fig. 8, in the second air outlet state, the connected first linkage member 300 and the second linkage member 400 respectively approach each other, and at this time, the longitudinal section of the air outlet 11 is substantially "in" shape, the outer wall of the air outlet 11 is engaged with the mounting opening 101 of the housing 100, and the housing 100 and the air outlet 11 are in a single-layer structure.

In some embodiments of the present invention, as shown in fig. 1, fig. 2, fig. 5, fig. 6, fig. 8, and fig. 9, the air outlet indication mechanism for a fan further includes: a mesh enclosure 500. The second linkage members 400 are movably connected to the mesh enclosure 500, and the mesh enclosure 500 is driven by the second linkage members 400 to move along the axial direction of the housing 100.

Specifically, when the driving device 200 drives the first linkage member 300 to move, the first linkage member 300 drives the second linkage member 400 connected thereto to move, the second linkage member 400 drives the mesh enclosure 500 to move, and then the mesh enclosure 500 drives the other second linkage members 400 to move, so as to drive the other first linkage members 300 to move, thereby opening and closing the first linkage member 300 and the second linkage member 400.

Alternatively, as shown in fig. 8 and 9, at least one of the first link 300 and the housing 100 is provided with a first rotation shaft hole 301, the first rotation shaft 12 is rotatably fitted in the first rotation shaft hole 301, and the first link 300 and the housing 100 are connected by the first rotation shaft 12. That is, the first rotating shaft 12 may be provided in the first link 300 and the first rotating shaft hole 301 may be provided in the housing 100, the first rotating shaft 12 may be provided in the housing 100 and the first rotating shaft hole 301 may be provided in the first link 300, or the first rotating shaft hole 301 may be provided in each of the first link 300 and the housing 100.

At least one of the first and

second linkage members

300 and 400 is provided with a connecting hole 13, a connecting rotation shaft 14 is rotatably fitted in the connecting hole 13, and the first and

second linkage members

300 and 400 are connected by the connecting rotation shaft 14. Here, the connection rotation shaft 14 may be provided on the first linkage 300 and the connection hole 13 may be provided on the second linkage 400, the connection rotation shaft 14 may be provided on the second linkage 400 and the connection hole 13 may be provided on the first linkage 300, or the connection holes 13 may be provided on the first linkage 300 and the housing 100, respectively.

At least one of the second linkage member 400 and the mesh enclosure 500 is provided with a second rotation shaft hole 401, the second rotation shaft 15 is rotatably fitted in the second rotation shaft hole 401, and the second linkage member 400 and the mesh enclosure 500 are connected by the second rotation shaft 15. Similarly, the second rotating shaft 15 may be provided in the second link 400, the second rotating shaft hole 401 may be provided in the mesh enclosure 500, the second rotating shaft 15 may be provided in the mesh enclosure 500, the second rotating shaft hole 401 may be provided in the second link 400, and the second rotating shaft hole 401 may be provided in each of the second link 400 and the mesh enclosure 500. In this way, the first linkage member 300 and the second linkage member 400 are respectively rotatably disposed, so that the structure is simple, and the change of the shape of the outlet 11 is relatively smooth.

Advantageously, as shown in fig. 9, in the first wind outlet state, the central axes of the first rotating shaft 12 and the second rotating shaft 15 are not coplanar with the central axis of the connecting rotating shaft 14, so as to further facilitate the transmission of the motion between the first linkage member 300 and the second linkage member 400. For example, in the first air outlet state, the central axis of the connecting rotary shaft 14 is located outside the central axis of the first rotary shaft 12 and the central axis of the second rotary shaft 15 in the radial direction of the casing 100.

In some embodiments of the present invention, as shown in fig. 10 to 12, one of the first and

second link members

300 and 400 is provided with a coupling boss 402, the other of the first and

second link members

300 and 400 is provided with a coupling recess 302, and the coupling boss 402 is rotatably fitted with the coupling recess 302. In this way, it is ensured that the first linkage member 300 and the second linkage member 400 do not undergo excessive axial displacement during the opening and closing movement of the first linkage member 300 and the second linkage member 400.

In some embodiments of the present invention, as shown in fig. 8 to 11, the pressing plate 16 is disposed on at least one first linkage member 300 (i.e., the first linkage member 300 in transmission connection with the driving device 200), the pressing plate 16 is disposed obliquely relative to the first linkage member 300, the driving device 200 has a push rod 201 moving along the axial direction of the casing 100, and in the second air outlet state, the push rod 201 presses against the pressing plate 16 to lift the first linkage member 300 outwards along the radial direction of the air outlet 11.

Advantageously, as shown in fig. 10 and 11, the pressing plate 16 is provided with an escape groove 17 for allowing the push rod 201 to pass through in the first wind-out state, thereby facilitating the movement of the push rod 201.

Specifically, the first linkage 300 and the second linkage 400 are each a generally rectangular plate, and the press plate 16 is located inside the first linkage 300 in the axial direction of the cover 100. In the first air outlet state, the push rod 201 presses against the surface of the first linkage member 300, and the push rod 201 is matched in the avoiding groove 17; the push rod 201 presses the pressing plate 16 in the second air-out state.

According to some embodiments of the present invention, as shown in fig. 8 and 9, the driving device 200 is plural, and the plural driving devices 200 are spaced apart along the circumference of the casing 100, so that the movement of the first linkage member 300 and the second linkage member 400 is more smooth and reliable. For example, the driving device 200 is a motor, and a plurality of motors are oppositely disposed in a radial direction of the housing 100.

As shown in fig. 1 to 12, a fan 1 according to an embodiment of the second aspect of the present invention includes: seat body 20, air-out indicating mechanism and impeller subassembly 30. For example, the fan 1 may be a circulation fan.

Specifically, the air-out indicating mechanism is installed on the seat 20, and the air-out indicating mechanism has an air outlet 11, and the shape of the air outlet 11 in the first air-out state is different from the shape of the air outlet 11 in the second air-out state. The impeller assembly 30 is rotatably mounted within the outlet air indication mechanism.

According to the fan 1 provided by the embodiment of the invention, different air outlet states of the fan 1 are indicated by changing the shape of the air outlet 11, so that people can conveniently distinguish the working condition of the fan 1, and the energy consumption is reduced.

According to some embodiments of the present invention, as shown in fig. 1 to 12, the wind indicating mechanism is a wind indicating mechanism for a fan according to an embodiment of the first aspect of the present invention, and the impeller assembly 30 is located in the casing 100.

Alternatively, as shown in fig. 8 and 9, the impeller assembly 30 includes an air outlet driving member 31, a first impeller 32 and a second impeller 33, and the casing 100 includes an inner casing 110 and an outer casing 120. The inner casing 110 is installed in the outer casing 120, the air outlet driving member 31 is installed in the inner casing 110, the first impeller 32 and the second impeller 33 are arranged along the axial direction of the housing 100, and the first impeller 32 and the second impeller 33 are respectively in transmission connection with the air outlet driving member 31 so as to be driven to rotate by the air outlet driving member 31. The mounting opening 101 is defined by the inner shell 110 and the outer shell 120, and the first linkage member 300 is movably mounted on the inner shell 110. Therefore, the first impeller 32, the second impeller 33 and the inner casing 110 cooperate to form an inner air duct, so that the air outlet performance can be improved.

Other constructions and operations of the fan 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "horizontal," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, "a first feature" or "a second feature" may include one or more of the features, and the first feature "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. The first feature being "on," "over" and "above" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "a specific embodiment," "an example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides an air-out indicating mechanism for fan which characterized in that includes:

a housing having a mounting port;

a drive device mounted within the housing;

the first linkage pieces are arranged along the circumferential direction of the mounting opening and movably mounted in the housing, and at least one of the first linkage pieces is in transmission connection with the driving device;

the second linkage pieces are respectively movably connected with the first linkage pieces in a one-to-one correspondence mode, the second linkage pieces are located on the outer sides of the first linkage pieces in the axial direction of the housing, the second linkage pieces and the first linkage pieces jointly define an air outlet, and under different air outlet states of the fan, the first linkage pieces and the second linkage pieces are different in movement position.

2. The air outlet indicating mechanism for the fan according to claim 1, wherein the shape of the air outlet in the first air outlet state is different from the shape of the air outlet in the second air outlet state.

3. The wind-out indicating mechanism according to claim 2, wherein a maximum outer diameter of the wind outlet in the first wind-out state is smaller than a maximum outer diameter of the wind outlet in the second wind-out state.

4. The outlet indicating mechanism according to claim 3, wherein the driving device drives the joint of the first linkage member and the second linkage member to move outward along the radial direction of the outlet during the switching from the first outlet state to the second outlet state; in the process of switching from the second air-out state to the first air-out state, the driving device drives the joint of the first linkage member and the second linkage member to move inwards along the radial direction of the air outlet.

5. The outlet indicating mechanism for the fan according to claim 4, wherein in the first outlet state, the plurality of first linkage members and the plurality of second linkage members are respectively parallel to an axial direction of the casing;

and in the second air outlet state, the connected first linkage piece and the second linkage piece respectively approach towards each other.

6. The wind indicating mechanism for a fan according to claim 5, further comprising:

the screen panel, a plurality of second linkage respectively with screen panel swing joint, the screen panel is in the drive of second linkage is followed the axial displacement of housing.

7. The wind-out indicating mechanism for the fan according to claim 6, wherein at least one of the first link member and the cover member is provided with a first rotating shaft hole, the first rotating shaft is rotatably fitted in the first rotating shaft hole, and the first link member and the cover member are connected by the first rotating shaft;

at least one of the first linkage piece and the second linkage piece is provided with a connecting hole, a connecting rotating shaft is rotatably matched in the connecting hole, and the first linkage piece and the second linkage piece are connected through the connecting rotating shaft;

at least one of the second linkage piece and the mesh enclosure is provided with a second rotating shaft hole, the second rotating shaft is rotatably matched in the second rotating shaft hole, and the second linkage piece and the mesh enclosure are connected through the second rotating shaft.

8. The wind indicating mechanism according to claim 7, wherein in the first wind state, the central axes of the first and second rotating shafts are not coplanar with the central axis of the connecting rotating shaft.

9. The wind-out indicating mechanism for fan of claim 5, wherein one of the first linkage member and the second linkage member is provided with a connection boss and the other is provided with a connection groove, and the connection boss is rotatably engaged with the connection groove.

10. The air outlet indication mechanism for the fan as claimed in claim 4, wherein a pressing plate is disposed on the at least one first linkage member, the pressing plate is disposed obliquely with respect to the first linkage member, the driving device has a push rod moving in an axial direction of the housing, and the push rod presses against the pressing plate in the second air outlet state to lift the first linkage member outward in a radial direction of the air outlet.

11. The air-out indicating mechanism for the fan as claimed in claim 10, wherein the pressing plate is provided with an escape groove for allowing the push rod to pass through in the first air-out state.

12. The wind indicating mechanism according to claim 1, wherein the driving device is provided in plurality, and the plurality of driving devices are arranged at intervals along a circumferential direction of the housing.

13. A fan, comprising:

a base body;

the air outlet indicating mechanism is arranged on the seat body and is provided with an air outlet, and the shape of the air outlet in a first air outlet state is different from the shape of the air outlet in a second air outlet state;

the impeller assembly is rotatably arranged in the air outlet indicating mechanism.

14. The fan of claim 13, wherein the wind indicator mechanism is according to any one of claims 1-12, and the impeller assembly is located within the casing.

15. The fan as claimed in claim 14, wherein the impeller assembly includes an air outlet driving member, a first impeller and a second impeller, the casing includes an inner casing and an outer casing, the inner casing is mounted in the outer casing, the air outlet driving member is mounted in the inner casing, the first impeller and the second impeller are arranged along an axial direction of the casing, the first impeller and the second impeller are respectively in transmission connection with the air outlet driving member to be driven to rotate by the air outlet driving member, the mounting opening is defined by the inner casing and the outer casing, and the first linkage member is movably mounted on the inner casing.