AAU heat dissipation device

Abstract

The utility model relates to the field of 5G tower heat dissipation, and particularly discloses an AAU heat dissipation device which comprises a shell, a first heat dissipation structure located on one end face of the outer wall of the shell, second heat dissipation structures located on the two sides of the side wall of the shell, first heat dissipation holes located in the upper top face of the shell and second heat dissipation holes located in the lower bottom face of the shell. The first heat dissipation holes are covered with first waterproof breathable films, and the second heat dissipation holes are covered with second waterproof breathable films. By adopting the technical scheme, one part of heat of the chip part in the AAU is discharged through the shell and the first heat dissipation structure, and the other part of heat is taken away through the first heat dissipation holes formed in the upper top surface of the shell and the second heat dissipation holes formed in the lower bottom surface of the shell; the waterproof breathable films on the heat dissipation holes ensure that water does not enter the heat dissipation holes, however, hot air can be discharged from the first heat dissipation holes in the top, and cold air can enter from the second heat dissipation holes in the bottom. Meanwhile, the second heat dissipation structures are arranged on the two sides of the side wall of the shell, and the heat dissipation effect is further improved.

Description

Technical Field

[0001] This application relates to the field of 5G tower heat dissipation, and particularly to a heat dissipation device for AAU. Background Art

[0002] AAU can be called an active antenna unit, which integrates the radio frequency unit and some physical layer bottom functions into the back of the antenna to form the active antenna unit AAU. With this structure, the operator's rooftop resources can be effectively integrated, the rooftop coordination requirements are simplified, the radio frequency unit and the antenna are combined into one, the feeder loss is reduced, the coverage effect is enhanced, and it is more suitable for the needs of multi-band and multi-mode networking. At the same time, the entire rooftop becomes simple, reliable, and stable, bringing benefits such as convenient deployment, space saving, reduced difficulty in site selection and property coordination, and a higher capacity gain with the design of the bundled cable connectors.

[0003] The current AAU heat dissipation device mainly relies on the heat dissipation fins on the housing for heat dissipation, but due to the limitation of the volume of the fins alone, its heat dissipation effect is not good. Summary of the Utility Model

[0004] In order to improve the heat dissipation problem, this application provides a heat dissipation device for AAU.

[0005] The heat dissipation device for AAU provided by this application adopts the following technical solutions:

[0006] A heat dissipation device for AAU, characterized in that it includes a housing, a first heat dissipation structure located at one end face of the outer wall of the housing, second heat dissipation structures located on both sides of the side wall of the housing, a first heat dissipation hole located on the upper top surface of the housing, and a second heat dissipation hole located on the lower bottom surface of the housing. The first heat dissipation hole is covered with a first waterproof and breathable membrane, and the second heat dissipation holes are all covered with second waterproof and breathable membranes.

[0007] By adopting the above technical solutions, part of the heat of the chip part in the AAU is discharged through the housing and the first heat dissipation structure, and the other part is taken away through the first heat dissipation hole on the upper top surface of the housing and the second heat dissipation hole on the lower bottom surface of the housing; the waterproof and breathable membranes on the heat dissipation holes ensure that water does not enter inside, but hot air will be discharged from the first heat dissipation hole at the top, and cold air will enter from the second heat dissipation hole at the bottom; at the same time, second heat dissipation structures are arranged on both sides of the side wall of the housing to further improve the heat dissipation effect.

[0008] Optionally, the first heat dissipation structure includes a first plate body, second plate bodies that expand outward on both sides of the first plate body, and third plate bodies connected to both sides of the second plate bodies.

[0009] By adopting the above technical solutions, cold air enters between the first plate bodies of two adjacent first heat dissipation structures and then flows out from both sides.

[0010] Optionally, the second heat dissipation structure includes heat dissipation fins in a continuous V-shaped structure.

[0011] By adopting the above technical solution, the V-shaped structure has a large heat dissipation surface area.

[0012] Optionally, a mounting rod is fixed on the end surface of the first heat dissipation structure. A collar is sleeved on the mounting rod, and a screw rod is fixed on the collar. The collar can move relative to the mounting rod.

[0013] By adopting the above technical solution, the movement of the collar includes two ways: rotation and translation, which is convenient for quickly adjusting the position of the screw rod.

[0014] Optionally, a protective shell is arranged above the first heat dissipation hole. The first waterproof and breathable membrane is installed on the outer wall of the shell, and the protective shell surrounds the first waterproof and breathable membrane.

[0015] By adopting the above technical solution, in this solution, since the first waterproof and breathable membrane is installed on the outer wall of the shell, it is easily damaged, so a protective shell is set for protection.

[0016] Optionally, a mounting frame is fixed inside the shell, and a third waterproof and breathable membrane is installed in the mounting frame corresponding to directly below the first waterproof and breathable membrane.

[0017] By adopting the above technical solution, the third waterproof and breathable membrane mainly plays an insurance role. Since the first waterproof and breathable membrane at the top may be damaged after long-term use, the third waterproof and breathable membrane is set.

[0018] Optionally, a closing plate is installed on the mounting frame, and through holes corresponding to the first heat dissipation holes are opened on the closing plate; both ends of the closing plate are arranged with gaps from the mounting frame, and a water-absorbing and expanding rubber strip is arranged in the gap at one end of the mounting frame and the closing plate; when the water-absorbing and expanding rubber strip absorbs water, it pushes the closing plate to move so that the through holes and the first heat dissipation holes are staggered to close the first heat dissipation holes.

[0019] By adopting the above technical solution, during normal use, the through holes are directly opposite and communicated with the first heat dissipation holes. When the first waterproof and breathable membrane leaks water, the water enters the mounting frame and is blocked by the third waterproof and breathable membrane. At the same time, when the water-absorbing and expanding rubber strip absorbs water, it pushes the closing plate to move so that the through holes and the first heat dissipation holes are staggered to close the first heat dissipation holes.

[0020] Optionally, the water-absorbing and expanding rubber strip is connected with a water guiding strip, and the water guiding strip abuts against the third waterproof and breathable membrane.

[0021] By adopting the above technical solution, it is convenient for the water-absorbing and expanding rubber strip to quickly absorb water.

[0022] Optionally, the second waterproof and breathable membrane is located on the inner wall of the shell.

[0023] By adopting the above technical solution, the second waterproof and breathable membrane is not easily damaged by external collisions.

[0024] Optionally, a connection frame is fixed to the lower bottom surface of the housing. The connection frame is used for installing a fan and has a water-blocking function.

[0025] Pre-configuring the connection frame allows determining whether to install the fan according to needs.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. By setting a combination of heat dissipation holes and a heat dissipation structure, the heat dissipation effect is improved;

[0028] 2. By setting the third waterproof and breathable membrane, the water absorption expansion strip and the closing plate, it is ensured that water does not enter;

[0029] 3. By setting a movable screw rod, the installation is facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 2 is along Figure 1 longitudinal sectional structure schematic diagram;

[0032] Figure 3 is Figure 2 magnified schematic diagram of part A in

[0033] Figure 4 is the internal structure diagram with the end cover opened.

[0034] Reference numerals: 1, housing; 2, first heat dissipation structure; 3, AAU component; 4, end cover; 5, first plate body; 6, second plate body; 7, third plate body; 8, first heat dissipation hole; 9, second heat dissipation hole; 10, first waterproof and breathable membrane; 11, second waterproof and breathable membrane; 12, installation frame; 13, opening; 14, third waterproof and breathable membrane; 15, closing plate; 16, water absorption expansion strip; 17, limiting part; 18, through hole; 19, water diversion strip; 20, protective shell; 21, through groove; 22, connection frame; 23, corresponding hole; 24, installation rod; 25, collar; 26, screw rod; 27, through hole; 28, second heat dissipation structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following further describes the present application in detail with reference to the attached Figures 1-4 drawings.

[0036] An embodiment of the present application discloses an AAU heat dissipation device, which includes a housing 1. A first heat dissipation structure 2 is provided on the outer wall of one end face of the housing 1, and the other end face is open for the installation of AAU components 3 (such as chips, PCB boards, etc.). The AAU components 3 are generally attached to the inner wall of the end face with thermal conductive gel. After installation, the open end is closed by an end cap 4.

[0037] The first heat dissipation structure 2 includes a plurality of parallel heat dissipation fins. The heat dissipation fins include a first plate body 5, second plate bodies 6 that expand outward on both sides of the first plate body 5, and third plate bodies 7 connected to both sides of the second plate bodies 6. The first plate body 5, the second plate bodies 6, and the third plate bodies 7 are integrally formed, and generally, the housing 1 and the whole can be processed by die-casting aluminum.

[0038] Second heat dissipation structures 28 are provided on both sides of the side wall of the housing 1. The second heat dissipation structures 28 include a plurality of parallel heat dissipation fins, which are continuous V-shaped structures. In this embodiment, each heat dissipation fin has two V-shaped structures, similar to an M-shaped structure.

[0039] A first heat dissipation hole 8 is opened on the upper top surface of the housing 1, and a second heat dissipation hole 9 is opened on the lower bottom surface of the housing 1. The first heat dissipation hole 8 and the second heat dissipation hole 9 are opposite to each other up and down. A first waterproof breathable membrane 10 is covered on the first heat dissipation hole 8, and the second heat dissipation holes 9 are all covered with second waterproof breathable membranes 11. Both the first waterproof membrane and the second waterproof breathable membrane 11 are connected to the housing 1 by bonding. The material is generally selected from polytetrafluoroethylene or TPU film.

[0040] In order to ensure that water does not enter the inside of the housing 1 due to the rupture of the first waterproof breathable membrane 10, the first waterproof breathable membrane 10 is provided on the outer wall of the housing 1, and a mounting frame 12 is fixedly installed on the inner wall of the housing 1. The bottom of the mounting frame 12 has an opening 13, and a third waterproof breathable membrane 14 is covered at the opening 13. The end face of the mounting frame 12 corresponding to the open end of the housing 1 is also open. When the end cap 4 is closed, the open end of the mounting frame 12 and the open end of the housing 1 will be closed together.

[0041] A closing plate 15 is provided in the mounting frame 12 near the upper end face of the housing 1. The closing plate 15 abuts against the housing 1, and both ends of the closing plate 15 are provided with gaps with the mounting frame 12. A water-absorbing and expanding rubber strip 16 is provided in the gap at one end of the mounting frame 12 and the closing plate 15; the closing plate 15 is located above the third waterproof breathable membrane 14 and is spaced from the third waterproof breathable membrane 14. A limiting part 17 is formed in the mounting frame 12. The lower end face of the closing plate 15 abuts against the limiting part 17. A through hole 18 is opened on the limiting part 17, and a water guiding strip 19 passes through the through hole 18 and abuts against the third waterproof breathable membrane 14. The water guiding strip 19 is generally made of water-absorbing sponge.

[0042] Since the first waterproof breathable membrane 10 is on the outer wall of the housing 1, a protective shell 20 is provided, the height of the protective shell 20 is higher than the height of the first waterproof breathable membrane 10, and the protective shell 20 surrounds the first waterproof breathable membrane 10. Through grooves 21 are provided on two opposite side walls of the protective shell 20 for easy carrying.

[0043] The second waterproof and breathable membrane 11 is located on the inner wall of the shell 1, and a connecting frame 22 is fixed to the lower bottom surface of the shell 1. The connecting frame 22 is located below the second heat dissipation hole 9 and is arranged in a U shape. A corresponding hole 23 is opened at the position corresponding to the second heat dissipation hole 9, and the corresponding hole 23 just corresponds to the air inlet end of the fan.

[0044] To facilitate installation, a mounting rod 24 is fixed on the end face where the first heat dissipation structure 2 is set. The mounting rod 24 is U-shaped and is provided with a collar 25. A screw 26 is fixed on the collar 25. The collar 25 can move relative to the mounting rod 24. Generally, a rubber ring is bonded inside the collar 25 to increase the friction between the collar 25 and the mounting rod 24, so that the movement of the collar 25 needs to overcome a certain friction.

[0045] The implementation principle of an AAU heat dissipation device in the embodiment of the present application is as follows: after the cold air enters from the second heat dissipation hole 9, it absorbs heat and is discharged from the first heat dissipation hole 8, and the remaining main heat is discharged into the air through the first heat dissipation structure 2, so that the heat of the two main opposite end faces of the AAU component 3 is taken away, and the heat dissipation effect is good. When the end cover 4 is closed, except that the first heat dissipation hole 8 is connected to the inside of the installation frame 12, the installation frame 12 can be regarded as closed. When the first waterproof breathable membrane 10 is broken, water will enter the installation frame 12 through the first heat dissipation hole 8 and the through hole 27 on the closing plate 15 and then be blocked by the third waterproof breathable membrane 14. The water is absorbed by the water guide strip 19 and then transferred to the water-absorbing and expanding rubber strip 16. The water-absorbing and expanding rubber strip 16 expands and pushes the closing plate 15 to move, so that the through hole 27 and the first heat dissipation hole 8 are staggered, thereby closing the first heat dissipation hole 8. In actual use, a temperature sensor will also be installed in the housing 1. In the above case, the heat dissipation capacity of the AAU decreases, and the temperature feedback of the temperature sensor is higher, so it is judged that maintenance is needed.

[0046] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0047] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0048] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structure or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. An AAU heat dissipation device, characterized in that: It includes a shell, a first heat dissipation structure located on one end surface of the outer wall of the shell, a second heat dissipation structure located on both sides of the side wall of the shell, a first heat dissipation hole located on the top surface of the shell, and a second heat dissipation hole located on the bottom surface of the shell, wherein the first heat dissipation hole is covered with a first waterproof and breathable membrane, and the second heat dissipation holes are covered with a second waterproof and breathable membrane.

2. The AAU heat dissipation device according to claim 1, characterized in that: The first heat dissipation structure includes a first plate body, a second plate body located on both sides of the first plate body and expanding outward, and a third plate body connected to both sides of the second plate body.

3. The AAU heat dissipation device according to claim 1, characterized in that: The second heat dissipation structure includes heat dissipation fins in a continuous V-shaped structure.

4. The AAU heat dissipation device according to claim 1, characterized in that: A mounting rod is fixed on the end surface of the first heat dissipation structure, a collar is sleeved on the mounting rod, a screw is fixed on the collar, and the collar can move relative to the mounting rod.

5. The AAU heat dissipation device according to claim 1, characterized in that: A protective shell is arranged above the first heat dissipation hole, the first waterproof and breathable membrane is installed on the outer wall of the shell, and the protective shell surrounds the first waterproof and breathable membrane.

6. The AAU heat dissipation device according to claim 1, characterized in that: An installation frame is fixed in the shell, and a third waterproof and breathable membrane is installed in the installation frame just below the first waterproof and breathable membrane.

7. The AAU heat dissipation device according to claim 6, characterized in that: A closing plate is installed on the installation frame, and a through hole corresponding to the first heat dissipation hole is provided on the closing plate; gaps are set between the two ends of the closing plate and the installation frame, and a water-absorbing and swelling rubber strip is set in the gap between the installation frame and one end of the closing plate; when the water-absorbing and swelling rubber strip absorbs water, it pushes the closing plate to move so that the through hole and the first heat dissipation hole are staggered to close the first heat dissipation hole.

8. The AAU heat dissipation device according to claim 7, characterized in that: The water-swellable rubber strip is connected to a water guide strip, and the water guide strip abuts against the third waterproof and breathable membrane.

9. The AAU heat dissipation device according to claim 1, characterized in that: The second waterproof and breathable membrane is located on the inner wall of the shell.

10. The AAU heat dissipation device according to claim 1, characterized in that: A connection frame is fixed on the lower bottom surface of the shell, and the connection frame is used to install a fan.

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