CN113009990A

CN113009990A - Servo device

Info

Publication number: CN113009990A
Application number: CN201911326533.8A
Authority: CN
Inventors: 刘俊宏; 林家鸿; 陈贵闵
Original assignee: Giga Byte Technology Co Ltd
Current assignee: Giga Byte Technology Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2021-06-22
Anticipated expiration: 2039-12-20

Abstract

A servo device comprises a case, an electronic component, a wind scooper and an airflow generator. The case is provided with an accommodating space, the electronic assembly comprises a mainboard and at least one expansion card, and the mainboard is positioned in the accommodating space. At least one expansion card comprises a fixed card body and a baffle plate, and the card body is arranged on the mainboard. The baffle is fixed in the machine case. The air guide cover is arranged outside the accommodating space and is provided with an air guide channel and the baffle plate arranged on at least one expansion card. The airflow generator is arranged on the wind scooper. The baffle or the case is provided with at least one opening, and the at least one opening is communicated with the accommodating space and the air guide channel.

Description

Servo device

Technical Field

The present disclosure relates to servo devices, and particularly to a servo device with an air guide cover.

Background

At present, servers are widely used by various enterprises, the development range of the servers combines the application of the internet and the telecommunication industry, and the servers also go deep into the life of general people, such as finance, finance and economics, internet banking, the use of internet credit cards, artificial intelligence and the like, which all need to lean against the powerful computing capability of the servers to be achieved. Taking artificial intelligence as an example, the artificial intelligence technology requires a larger amount of computation, so a large number of high-performance display cards are needed. However, the high performance display card also brings a large amount of waste heat, and if the waste heat cannot be exhausted out of the server in real time, the accumulated waste heat may cause the computing performance of the high performance display card to be reduced or even cause heat.

In the prior art, fans are installed inside and outside the server to enhance the heat dissipation airflow passing through the high performance display card. However, since the fan outside the existing server is directly installed on the chassis and only can radiate heat for a single display card, if the chassis used by the user does not have a structure for assembling the external fan, the user may need to replace the chassis or only use the high-performance display card at a reduced speed, so as to avoid the high-performance display card from being hot.

Disclosure of Invention

The invention aims to provide a servo device, which solves the problem that the traditional servo device can not be provided with an external fan or can be provided with a specific external fan only.

The servo device disclosed by the embodiment of the invention comprises a case, an electronic component, an air guide cover and an air flow generator. The case is provided with an accommodating space. The electronic component comprises a mainboard and at least one expansion card. The mainboard is located the accommodation space. At least one expansion card comprises a card body and a baffle plate which are fixed with each other. The card body is arranged on the mainboard. The baffle is fixed in the machine case. The wind scooper is located outside the accommodating space. The wind guide cover is provided with a wind guide channel and is arranged on the baffle of at least one expansion card. The airflow generator is arranged on the wind scooper. The baffle or the case is provided with at least one opening, and the at least one opening is communicated with the accommodating space and the air guide channel.

According to the servo device of the embodiment, because the baffle of the expansion card of the embodiment is additionally provided with the design of the combination hole, a user can directly install the air guiding cover and the air flow generator sold by the expansion card manufacturer on the baffle of the expansion card, so that the heat energy generated by all the expansion cards on the mainboard can be simultaneously led out of the case. Therefore, the user does not sacrifice the addition of the air guide cover and the external fan due to the limitation of the case, and the original case does not need to be replaced for adding the air guide cover and the external fan.

The foregoing summary of the invention, as well as the following detailed description of the embodiments, is provided to illustrate and explain principles of the invention and to provide further explanation of the invention as claimed.

Drawings

Fig. 1 is a schematic plan view of a servo device according to a first embodiment of the present invention.

Fig. 2 is an exploded view of a portion of the servo apparatus of fig. 1.

Fig. 3 is an exploded view of a wind scooper and an airflow generator according to a second embodiment of the invention.

Fig. 4 is a perspective view of the wind scooper of fig. 3 in a folded state.

Fig. 5 is a perspective view of the wind scooper of fig. 3 in an unfolded state.

Fig. 6 is an exploded view of a wind scooper and an airflow generator according to a third embodiment of the present invention.

Fig. 7 is a perspective view of the wind scooper of fig. 6 in a folded state.

Fig. 8 is a perspective view of the wind scooper of fig. 6 in an unfolded state.

Fig. 9 is a schematic plan view of a wind scooper according to a fourth embodiment of the present invention, the wind scooper being folded.

Fig. 10 is a schematic plan view of the wind scooper of fig. 9 in an unfolded state.

Fig. 11 is a schematic plan view of a part of a servo device according to a fifth embodiment of the present invention.

Fig. 12 is a plan view of the cover covering the opening of fig. 11.

The reference numbers are as follows:

10. servo device

Front-mounted heat dissipation fan

70. rear heat radiation fan

100. Case 100d

A base plate

120

A back plate

Slotting

An electronic assembly

210.. host board

Expansion card

221

2211. 2211d

222. 222d

2221

2222

300. 300a, 300b, 300c, 300d

Assembly plate

321

Fixing frame

310a, 310b, 310c

311a, 311b

312a, 312b

320a, 320b, 320c

321a, 321b

322a, 322b

323a

Assembly plate 324a

350a, 350b, 350c

360a, 360b, 360c

Opening 370d

380d

390d

400. 400d

500

Acute angle theta

Air inlet opening of O1, O1'

O2

S1

S2

Direction of A-D

Plane surface

F … heat dissipation airflow

Detailed Description

Please refer to fig. 1-2. Fig. 1 is a schematic plan view of a servo device according to a first embodiment of the present invention. Fig. 2 is an exploded view of a portion of the servo apparatus of fig. 1.

The servo apparatus 10 of the present embodiment includes a housing 100, an electronic component 200, an air guiding cover 300 and an air flow generator 400. The servo 10 may further comprise a plurality of couplers 500.

The chassis 100 includes a bottom plate 110, two side plates 120, and a back plate 130. The two side plates 120 and the back plate 130 are respectively connected to different sides of the bottom plate 110, and the bottom plate 110, the two side plates 120 and the back plate 130 together enclose an accommodating space S1. The back plate 130 has a plurality of slots 131, and the slots 131 are arranged from one side plate 120 to the other side plate 120. The function of the slot 131 will be described later.

The electronic component 200 includes a motherboard 210 and a plurality of expansion cards 220. The main board 210 is located in the accommodating space S1 and is provided with electronic components such as a central processing unit, a memory, and the like. Each expansion card 220 includes a card body 221 and a baffle 222 fixed to each other. The card body 221 is directly inserted into an expansion slot of the motherboard 210 and has a connection port 2211. The connection port 2211 is inserted through the baffle 222. The baffle 222 is fixed to the back panel 130 of the chassis 100 by screws, for example, and the baffle 222 covers the slot 131 of the back panel 130, and the connection port 2211 is partially located outside the chassis 100 through the slot 131. In addition, the baffle 222 has a plurality of openings 2222, and the openings 2222 communicate the accommodating space S1 with the space outside the chassis 100. The function of opening 2222 will be described later.

In the embodiment, the expansion card 220 is exemplified by a display card, and the connection port 2211 is an audio/Video signal connection port such as a high-definition multimedia Interface (HDMI), a displayport (dp), a Digital Visual Interface (DVI), a VGA terminal (Video Graphics Array connector), and the like.

In this embodiment, the servo device 10 may further include a plurality of front heat dissipation fans 60 and a rear heat dissipation fan 70. The front heat dissipation fans 60 are located in the accommodating space S1 and are installed on a side of the expansion card 220 away from the back board 130, and the heat dissipation airflow generated by the front heat dissipation fans 60 is used to blow the expansion card 220 and other electronic components on the motherboard 210, so as to further improve the heat dissipation capability of the server 10. The rear heat dissipation fan 70 is installed on the back plate 130 of the chassis 100, and the heat dissipation airflow generated by the rear heat dissipation fan 70 is used to blow to the rest of the electronic components on the motherboard 210, so as to perform heat dissipation on the electronic components 200 of the servo device 10. However, for the higher-performance electronic component 200, since the waste heat generated by the higher-performance electronic component 200 is higher, if the light from the front heat dissipation fan 60 and the rear heat dissipation fan 70 is still insufficient to remove the waste heat of the electronic component 200, the electronic component 200 can be further cooled by the wind scooper 300 and the airflow generator 400.

Specifically, the wind scooper 300 is located outside the cabinet 100. The wind guiding cover 300 has a wind guiding channel S2 and is installed on the two baffles 222 of the two expansion cards 220 located on the opposite sides, so that the wind guiding channel S2 is communicated with the accommodating space S1 through the openings 2222 on the baffles 222. Specifically, each of the baffles 222 has at least one coupling hole 2221. In the present embodiment, each baffle 222 takes four combining holes 2221 as an example, two combining holes are taken as a group, which are divided into two groups, and the two groups of combining holes 2221 are respectively adjacent to two opposite sides of the baffle 222. The wind scooper 300 includes a plurality of covering plates 310, two assembling plates 320 and a fixing frame 330. Any two adjacent cover plates 310 are connected to each other so that the cover plates 310 collectively surround the air guiding passage S2. The fixing frame 330 connects the covering plates 310, and one ends of the covering plates 310 far from the fixing frame 330 jointly surround to form the air inlet O1, and the fixing frame 330 surrounds the air outlet O2. The accommodating space S1 is sequentially connected to the air inlet O1, the air guiding passage S2, and the air outlet O2.

The two assembling plates 320 are connected to two covering plates 310 at two opposite sides, respectively, and are located at an end of the two covering plates 310 opposite to the fixing frame 330. The two assembling plates 320 each have at least one through hole 321, and the embodiment is exemplified by two through holes 321. The connectors 500 are, for example, screws, and the connectors 500 respectively pass through the through holes 321 of the two assembling plates 320 and are respectively combined with the two sets of combining holes 2221 located at the outermost side of the baffles 222 of the expansion cards 220, so that the wind scooper 300 is assembled on the two baffles 222 of the two expansion cards 220 located at the opposite sides.

The airflow generator 400 is, for example, a fan, and is installed in the fixing frame 330 of the wind scooper 300. That is, the airflow generator 400 is installed at the outlet O2 of the wind scooper 300. When the airflow generator 400 operates, the heat dissipation airflow F generated by the airflow generator 400 flows through the expansion card 220 in the accommodating space S1. Then, after the heat dissipation airflow F flows through the expansion card 220, it flows through the opening 2222 and the air guiding channel S2, so as to discharge all the waste heat generated by the expansion card 220 out of the chassis 100.

Since the baffle plate 222 of the expansion card 220 is additionally provided with the coupling hole 2221, if the casing 100 has no structure for assembling the wind scooper 300, the wind scooper 300 can be assembled on the baffle plate 222 of the expansion card 220, so as to improve the heat dissipation capability of the server 10. Further, the description will be made in terms of actual conditions. The casing 100 of the conventional servo device 10 is not provided with a structure for connecting the wind scooper 300, so the wind scooper 300 cannot be arranged, and unless the casing 100 is replaced, a user cannot improve the heat dissipation efficiency of the servo device 10 by additionally installing the wind scooper 300 and an external fan. On the contrary, since the baffle plate 222 of the expansion card 220 of the embodiment is additionally provided with the combination hole 2221, the user can directly mount the air guiding cover 300 and the airflow generator 400 corresponding to the size of the expansion card 220 on the baffle plate 222 of the expansion card 220. In this way, the user does not sacrifice the addition of the wind scooper 300 and the external fan due to the limitation of the enclosure 100, and does not need to replace the original enclosure 100 in order to add the wind scooper 300 and the external fan.

In addition, when the wind scooper 300 is assembled to the baffle 222 of the expansion card 220, the wind inlet O1 of the wind scooper 300 is closer to the chassis 100 than the wind outlet O2, and as shown in fig. 1, an acute angle θ is formed between each shielding plate 310 and the plane E where the wind inlet O1 is located, so that the sectional area of the wind guiding channel S2 is gradually reduced along the direction away from the chassis 100, the area of the wind inlet O1 of the wind scooper 300 is larger than the area of the wind outlet O2 of the wind scooper 300, and the wind inlet O1 of the wind scooper 300 corresponds to the plurality of expansion cards 220. In this way, the server apparatus 10 can only use a single airflow generator 400 to perform heat dissipation on the plurality of expansion cards 220, thereby reducing the installation cost of the fan in the server apparatus 10.

In the present embodiment, the fasteners 500 are screws, but not limited thereto. In other embodiments, the fasteners 500 may be rivets or fasteners. In addition, if the electronic components that are susceptible to vibration interference are installed in the chassis 100, the connectors 500 may also have a shock absorption function, so as to further prevent the vibration generated by the operation of the airflow generator 400 from being transmitted to the electronic components inside the chassis 100 through the wind scooper 300.

In the present embodiment, the combination holes 2221 of the baffle plate 222 are divided into two groups and are respectively adjacent to two opposite sides of the baffle plate 222, but not limited thereto. In other embodiments, the combination holes 2221 of the baffle plate 222 may be only a single group, and are located in the baffle plate 222 or above the baffle plate.

In the embodiment, since the number of the expansion cards 220 is plural, the wind scoops 300 are installed on the two baffles 222 of the two expansion cards 220 located at the outermost two sides, but not limited thereto, and the wind scoops 300 may be installed only on the expansion cards 220 that are not connected with the signal connection lines. In other embodiments, if the number of the expansion cards 220 is only one, the air guiding cover 300 may be installed on only one expansion card 220.

In this embodiment, the number of the connection ports 2211 is a single port, but is not limited thereto. In other embodiments, the number of the connection ports 2211 may be multiple.

In the embodiment, the card body 221 is directly inserted into an expansion slot of the motherboard 210, for example, but not limited thereto. In other embodiments, the card body 221 can also be indirectly inserted into an expansion slot of the motherboard 210 through a flexible bus.

In the present embodiment, only the baffle 222 has the opening 2222, but not limited thereto. In other embodiments, both the baffle 222 and the housing 100 may have the opening 2222, or only the housing 100 may have the opening 2222.

The wind scooper 300 is an integrated structure, such that the size of the wind inlet O1 of the wind scooper 300 is fixed, but not limited thereto. Please refer to fig. 3 to 5. Fig. 3 is an exploded view of a wind scooper and an airflow generator according to a second embodiment of the invention. Fig. 4 is a perspective view of the wind scooper of fig. 3 in a folded state. Fig. 5 is a perspective view of the wind scooper of fig. 3 in an unfolded state.

In the present embodiment, the wind scooper 300a includes a main shroud 310a and two sub-shrouds 320 a. The main cover 310a includes a first side plate 311a and two second side plates 312 a. The two second side plates 312a are respectively connected to two opposite sides of the first side plate 311a, and the airflow generator 400 is installed on the first side plate 311 a. Each sub-enclosure 320a includes a third side plate 321a and two fourth side plates 322 a. The two fourth side plates 322a are respectively connected to two opposite sides of the third side plate 321a, and the third side plate 321a covers part of the first side plate 311a, and the two fourth side plates 322a respectively cover part of the two second side plates 312 a. In addition, each sub-housing 320a may further include a fifth side plate 323a and an assembly plate 324a. The fifth side plate 323a is connected to the two fourth side plates 322a, and the assembling plate 324a is connected to the fifth side plate 323a and is coupled to the baffle of the expansion card, for example, by a coupling member.

Since the two sub-shields 320a are identical to the main shield 310a, the connection between the sub-shields 320a and the main shield 310a will be described first. The wind scooper 300a of the present embodiment further includes two first slide rail structures 350a and two second slide rail structures 360 a. The two first slide rail structures 350a are respectively located on one sides of the two second side plates 312a far away from the first side plate 311 a. The two second sliding rail structures 360a are respectively located on a side of the two fourth side plates 322a of one of the sub-shields 320a away from the third side plate 321 a. The first slide rail structures 350a and the second slide rail structures 360a are, for example, sliding blocks and sliding grooves, which are matched, and the two second slide rail structures 360a are slidably disposed on the two first slide rail structures 350a, respectively, so that the sub-cover 320a is movably disposed on the main cover 310 a. Similarly, the wind scooper 300a further includes another two second sliding rail structures 360 a. The other two second sliding rail structures 360a are respectively located on the two fourth side plates 322a of the other pair of shields 320a far away from the third side plate 321a, and the other two second sliding rail structures 360a are respectively slidably disposed on the two first sliding rail structures 350a, so that the other pair of shields 320a can be movably disposed on the main shield 310 a.

As can be seen from the above description, the two sub-hoods 320a are movably disposed on opposite sides of the main hood 310a, and the main hood 310a and the two sub-hoods 320a together surround the air inlet/outlet opening O1. The two sub-shields 320a are movable relative to the main shield 310a to adjust the area of the inlet O1. For example, if the number of expansion cards installed in the chassis increases, the user can adjust the relative position relationship between the sub-cover 320a and the main cover 310a along the direction a to adjust the original air inlet O1 (shown in fig. 4) to be the air inlet O1 '(shown in fig. 5), so that the range of the air inlet O1' covers the distribution area of the expansion cards. That is, when the number of expansion cards in the chassis increases, the user can change the wind scooper 300a from the retracted state (as shown in fig. 4) to the extended state (as shown in fig. 5) along the direction a.

Please refer to fig. 6 to 8. Fig. 6 is an exploded view of a wind scooper and an airflow generator according to a third embodiment of the present invention. Fig. 7 is a perspective view of the wind scooper of fig. 6 in a folded state. Fig. 8 is a perspective view of the wind scooper of fig. 6 in an unfolded state.

In the present embodiment, the wind scooper 300b includes a main shroud 310b and two sub-shrouds 320 b. The main cover 310b includes a first side plate 311b and two second side plates 312b. The two second side plates 312b are respectively connected to two opposite sides of the first side plate 311b, and the airflow generator 400 is installed on the first side plate 311b. Each secondary housing 320b includes a third side plate 321b and two fourth side plates 322b. The two fourth side plates 322b are respectively connected to two opposite sides of the third side plate 321b, and the third side plate 321b covers a portion of the first side plate 311b, and the two fourth side plates 322b respectively cover a portion of the second side plate 312b.

Since the two sub-shields 320b are identical to the main shield 310b, the connection between the sub-shields 320b and the main shield 310b will be described first. The wind scooper 300b of the present embodiment further includes a first slide rail structure 350b and a second slide rail structure 360 b. The first slide rail structure 350b is located on the first side plate 311b. The second sliding track structure 360b is located on the third side plate 321b of one of the pair of enclosures 320 b. The first slide rail structure 350b and the second slide rail structure 360b are, for example, a T-shaped slider and a T-shaped sliding slot, which are matched, and the second slide rail structure 360b is slidably disposed on the first slide rail structure 350b, so that the sub-cover 320b is movably disposed on the main cover 310 b. Similarly, the wind scooper 300b further includes another second slide rail structure 360 b. The second slide rail structure 360b is disposed on the third side plate 321b of the second auxiliary cover 320b, and the second slide rail structure 360b is slidably disposed on the first slide rail structure 350b, so that the second auxiliary cover 320b is movably disposed on the main cover 310 b.

As can be seen from the above description, the two sub-covers 320b are movably disposed on opposite sides of the main cover 310b, and the main cover 310b and the two sub-covers 320b together surround the air inlet/outlet opening O1. The two sub-covers 320b are movable relative to the main cover 310b to adjust the area of the air inlet O1. For example, if the number of expansion cards installed in the chassis increases, the user can adjust the relative position relationship between the sub-cover 320B and the main cover 310B along the direction B to adjust the original air inlet O1 (shown in fig. 7) to be the air inlet O1 '(shown in fig. 8), so that the range of the air inlet O1' covers the distribution area of the expansion cards. That is, when the number of expansion cards in the chassis increases, the user can change the wind scooper 300B from the retracted state (as shown in fig. 7) to the extended state (as shown in fig. 8) along the direction B.

Please refer to fig. 9 to 10. Fig. 9 is a schematic plan view of a wind scooper according to a fourth embodiment of the present invention, the wind scooper being folded. Fig. 10 is a schematic plan view of the wind scooper of fig. 9 in an unfolded state.

In the present embodiment, the wind scooper 300c includes a main shroud 310c and two sub-shrouds 320c. Since the two sub-shields 320c are identical to the main shield 310c, the connection between the sub-shields 320c and the main shield 310c will be described first. The wind scooper 300c of the present embodiment further includes a first slide rail structure 350c and a second slide rail structure 360c. The first slide rail structure 350c is disposed on the main housing body 310c. The second slide rail structure 360c is disposed on one of the pair of shields 320c. The first slide rail structure 350c and the second slide rail structure 360c are, for example, a roller and a rail matched with each other, and the second slide rail structure 360c is slidably disposed on the first slide rail structure 350c, so that the auxiliary cover 320c is movably disposed on the main cover 310c. Similarly, the wind scooper 300 further includes another first slide rail structure 350c and a second slide rail structure 360c. The other first slide rail structure 350c and the second slide rail structure 360c are respectively disposed on the main cover body 310c and the other auxiliary cover body 320c, and the other second slide rail structure 360c is slidably disposed on the other first slide rail structure 350c, so that the other auxiliary cover body 320c is movably disposed on the main cover body 310c.

As can be seen from the above description, the two sub-housings 320c are movably disposed at two opposite sides of the main housing 310c, and the main housing 310c and the two sub-housings 320c together surround the air inlet and outlet. The two sub-shields 320c are movable relative to the main shield 310c to adjust the area of the air inlet. For example, if the number of expansion cards installed in the chassis increases, the user can adjust the relative position relationship between the sub-housing 320C and the main housing 310C along the direction C to change the wind scooper 300C from the retracted state (shown in fig. 9) to the extended state (shown in fig. 10).

In the above embodiment, the number of the sub-cover bodies is two, and the two sub-cover bodies are respectively located at two opposite sides of the main cover body, but not limited thereto. In other embodiments, the number of the secondary cover bodies can be single, and the secondary cover bodies are only arranged on one side of the main cover body.

Please refer to fig. 11 to 12. Fig. 11 is a schematic plan view of a part of a servo device according to a fifth embodiment of the present invention. Fig. 12 is a plan view of the cover covering the opening of fig. 11. The servo device 10d of the present embodiment may further include at least one external connector 380d in addition to the original enclosure 100d, the wind scooper 300d and the airflow generator 400d. The wind scooper 300d has an opening 370d and a cover 390d. The external connector 380d is fixed to the opening 370d of the air guiding cover 300d and electrically connected to the connection port 2211d of the expansion card 222d. The cover 390d is movably disposed in the opening 370d of the wind scooper 300d to cover or expose the external connector 380d. As shown in fig. 11, when there is a need to lap-joint an external electronic device such as a screen or a television, the cover 390D can move along the direction D to expose the external connector 380D, so that the signal connection line of the external electronic device can be plugged into the external connector 380D. On the contrary, as shown in fig. 12, when there is no external electronic device bonding requirement, the cover 390D can move in the direction D to cover the external connector 380D by the cover 390D.

Of course, the wind scooper 300d of the above embodiment may only have an opening 370d and a cover 390d, and when there is a need for external electronic device to be connected, the cover 390d may be opened, so that the signal connection line can pass through the opening 370d and be directly connected to the connection port of the expansion card.

According to the servo device of the above embodiment, since the baffle plate of the expansion card of the embodiment is provided with the design of the combination hole, the user can directly install the air guiding cover and the airflow generator sold by the expansion card manufacturer on the baffle plate of the expansion card. Therefore, the user does not sacrifice the addition of the air guide cover and the external fan due to the limitation of the case, and the original case does not need to be replaced for adding the air guide cover and the external fan.

In at least some embodiments, the area of the air inlet of the air guiding cover is larger than the area of the air outlet of the air guiding cover, and the air inlet of the air guiding cover corresponds to the plurality of expansion cards. Therefore, the servo device can perform heat clearing on a plurality of expansion cards only by a single airflow generator, thereby reducing the installation cost of the fan in the servo device.

In at least some embodiments, because the sub-cover is movably located in the main cover, and the main cover and the two sub-covers together surround the air inlet/outlet, if the number of expansion cards installed in the chassis increases or decreases, the user can adjust the relative position relationship between the sub-cover and the main cover, so that the range of the air inlet covers the distribution area of the expansion cards.

In at least some embodiments, the external connector is fixed to the opening of the air guiding cover, so that the external electronic device is electrically connected to the expansion card.

Although the present invention has been described with reference to the foregoing embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A servo apparatus, comprising:

a case having an accommodating space;

an electronic assembly, including a host board and at least one expansion card, the host board is located in the space, the at least one expansion card includes a card body and a baffle fixed mutually, the card body is loaded on the host board, the baffle is fixed in the chassis;

the air guide cover is positioned outside the accommodating space, is provided with an air guide channel and is arranged on the baffle of the at least one expansion card; and

an airflow generator arranged on the wind scooper;

the baffle or the case is provided with at least one opening, and the at least one opening is communicated with the accommodating space and the air guide channel.

2. The servo device as claimed in claim 1, wherein the wind scooper has an air inlet and an air outlet opposite to each other, the air inlet is closer to the housing than the air outlet, and the airflow generator is installed at the air outlet.

3. The servo device as claimed in claim 2, wherein the wind scooper includes a plurality of covering plates and a fixing frame, the plurality of covering plates jointly surround the wind guiding channel, the fixing frame is connected to one end of the plurality of covering plates, which is far away from the fixing frame, jointly surrounds the wind inlet, and the fixing frame surrounds the wind outlet.

4. The servo device as claimed in claim 3 wherein each of the covering plates forms an acute angle with a plane of the air inlet, such that the area of the air inlet of the air guiding cover is larger than the area of the air outlet of the air guiding cover.

5. The servo device as claimed in claim 2, wherein the wind scooper comprises a main shroud and at least one auxiliary shroud, the at least one auxiliary shroud is movably disposed at one side of the main shroud, the main shroud and the at least one auxiliary shroud surround the wind inlet, and the at least one auxiliary shroud is movable relative to the main shroud to adjust an area of the wind inlet.

6. The servo device as claimed in claim 5 wherein the at least one sub-housing is two in number, and the two sub-housings are movably disposed on opposite sides of the main housing.

7. The servo device as claimed in claim 5 wherein the main housing comprises a first side plate and two second side plates, the gas flow generator is mounted on the first side plate, the two second side plates are respectively connected to two opposite sides of the first side plate, the at least one sub-housing comprises a third side plate and two fourth side plates, the two fourth side plates are respectively connected to two opposite sides of the third side plate, the third side plate covers the first side plate, and the two fourth side plates cover the two second side plates.

8. The servo device as claimed in claim 7, wherein the wind scooper further comprises two first rail structures and two second rail structures, the two first rail structures are respectively located on the sides of the two second side plates away from the first side plate, the two second rail structures are respectively located on the sides of the two fourth side plates away from the second side plate, and the two second rail structures are respectively slidably disposed on the two first rail structures.

9. The servo device as claimed in claim 7, wherein the wind scooper further comprises a first rail structure and a second rail structure, the first rail structure is disposed on the first side plate, the second rail structure is disposed on the third side plate, and the second rail structure is slidably disposed on the first rail structure.

10. The servo device as claimed in claim 1 further comprising at least one external connector, wherein the card body has at least one connection port, the at least one connection port of the card body penetrates the baffle, the wind scooper has an opening, and the external connector is fixed to the opening of the wind scooper and electrically connected to the connection port.

11. The servo device as claimed in claim 10 further comprising a cover movably disposed in the opening of the wind scooper to cover or expose the external connector.

12. The servo device as claimed in claim 1, further comprising a plurality of connectors, wherein the wind scooper has a plurality of through holes, the at least one expansion card has a plurality of connection holes, and the plurality of connectors are respectively inserted through the plurality of through holes and respectively connected to the plurality of connection holes of the at least one expansion card.

13. The servo device of claim 12 wherein each of the plurality of engaging members is a screw, a rivet or a fastener.