Heat dissipation structure of optical module and optical module

Abstract

The application discloses a heat dissipation structure of an optical module and the optical module, and the optical module comprises a shell, a pull ring and an unlocking part, the shell comprises an upper shell, a lower shell and two side plates, and a cavity is formed between the upper shell, the lower shell and the two side plates, characterized in that the heat dissipation structure comprises a heat dissipation part located on the upper shell and a first heat dissipation fin attached to the heat dissipation part; the heat dissipation structure further comprises a second heat dissipation fin fixedly connected with the unlocking part, and one end of the second heat dissipation fin, which is away from the unlocking part, is connected with one end of the pull ring, which is away from the unlocking part. The heat dissipation structure can effectively conduct the heat of the optical module to the outside of the optical module through the cooperation of the first heat dissipation fin and the heat dissipation part and the cooperation of the second heat dissipation fin and the unlocking part, so that the effect of rapid heat dissipation is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication equipment, in particular to a heat dissipation structure of an optical module and an optical module comprising the heat dissipation structure. BACKGROUND

[0002] The optical module is a short name of an optical transceiver module, which is a core device of optical communication and completes optical-electricity / electricity-optical conversion. With the development of optical communication products, the bandwidth and rate of automatic receiving modules in the optical communication industry are getting larger and larger, the IC processing power of the products is getting larger and larger, and the heat dissipation requirement is getting higher and higher.

[0003] The current heat dissipation method in the industry is to use zinc alloy material of structural parts to dissipate heat by itself, and also to conduct heat to the stainless steel material cage for heat dissipation. When several hundred modules are used together in the cloud room with multiple rows of array distance, the overall heat is higher, and the thermal conductivity of zinc alloy is only 112 W / MK, resulting in poor heat dissipation effect of the optical module. SUMMARY

[0004] Therefore, in order to overcome the defects of the prior art, the purpose of the present application is to provide an improved heat dissipation structure to effectively improve the heat dissipation effect of the optical module.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A heat dissipation structure of an optical module, the optical module comprising a shell, a pull ring and an unlocking part, the shell comprising an upper shell, a lower shell and two side plates, a cavity being formed between the upper shell, the lower shell and the two side plates, the heat dissipation structure comprising a heat dissipation part located on the upper shell and a first heat dissipation fin attached to the heat dissipation part; the heat dissipation structure further comprising a second heat dissipation fin fixedly connected to the unlocking part, one end of the second heat dissipation fin away from the unlocking part being connected to one end of the pull ring away from the unlocking part.

[0007] By setting the heat dissipation part on the upper shell and attaching the first heat dissipation fin, the heat is conducted to the outside through the first heat dissipation fin; and by setting the second heat dissipation fin on the unlocking part, and connecting one end of the second heat dissipation fin away from the unlocking part to one end of the pull ring away from the unlocking part, the second heat dissipation fin directly contacts the shell of the optical module through the unlocking part, so that the heat of the shell is transferred to the second heat dissipation fin through the unlocking part, and the heat is conducted to the outside through the second heat dissipation fin. The combination of the first heat dissipation fin and the second heat dissipation fin is conducive to achieving the effect of rapid heat dissipation of the optical module.

[0008] Preferably, the heat dissipation part is located at an end of the upper shell close to the pull ring, the heat dissipation part comprising a groove opened at one end of the upper surface of the upper shell, a flat area and a bent area, the flat area being located between the groove and the bent area; the upper shell further comprising an upper shell body connected to the bent area.

[0009] Preferably, the upper shell body is parallel to the flat area, the bending area is arranged obliquely, and the height from the lower surface of the flat area to the lower shell is greater than the height from the lower surface of the upper shell body to the lower shell.

[0010] Preferably, the length of the groove is less than the width of the upper shell, the depth of the groove is less than the thickness of the upper shell, and the depth of the groove is equal to the thickness of the first heat dissipation fin. The length of the groove is less than the width of the upper shell, that is, the end of the upper shell near the unlocking part is not completely opened in the width direction of the upper shell, but a part is reserved without being opened. In some embodiments of the present application, the groove is located at the central position of the end of the upper shell, and the parts of the upper shell on both sides form blocking parts for fixing the first heat dissipation fin. The depth of the groove is equal to the thickness of the first heat dissipation fin, that is, when the first heat dissipation fin is in a position in contact with the groove, the upper surface of the first heat dissipation fin can be flush with the upper surface of the end of the upper shell, avoiding affecting the connection of the unlocking part.

[0011] Preferably, one end of the flat area is connected with one end of the groove, the other end of the flat area is connected with one end of the bending area, and the distance from the lower surface of the flat area to the bottom surface of the groove is equal to the thickness of the first heat dissipation fin. That is, when the first heat dissipation fin is in contact with the heat dissipation part, the upper surface of the first heat dissipation fin corresponding to the flat area part is in contact with the lower surface of the flat area, which is conducive to heat dissipation.

[0012] Preferably, the first heat dissipation fin comprises a first part, a second part and a third part, the upper surface of the first part is in contact with the lower surface of the upper shell body, the upper surface of the second part is in contact with the lower surface of the bending area, the upper surface of the end of the third part close to the second part is in contact with the lower surface of the flat area, and the lower surface of the remaining part of the third part is in contact with the bottom surface of the groove. The contact between the surfaces is conducive to the conduction of heat through the shell and the first heat dissipation fin.

[0013] Preferably, the unlocking part comprises a connecting plate, the connecting plate is located above the groove, the width of the connecting plate is greater than or equal to the width of the groove, and the height from the lower surface of the connecting plate to the groove is greater than the thickness of the first heat dissipation fin. That is, the part of the first heat dissipation fin below the connecting plate of the unlocking part is not in contact with the connecting plate, so that there is a gap between them, which is conducive to the circulation of air, so that the heat of the part of the first heat dissipation fin in contact with the upper shell can be conducted outward through the gap.

[0014] Preferably, the width of the second part is equal to the width of the bending area, and the length of the third part is equal to or less than the sum of the widths of the groove and the flat area. The second part is also arranged to be inclined, and the width of the second part is equal to the width of the bending area, which is conducive to the good fit between the second part of the first heat dissipation fin and the bending area, and avoids the first part from being unable to reach the upper shell body. Similarly, the length of the first part and the length of the third part can be less than or equal to the width of the upper shell, as long as the fit between the first heat dissipation fin and the upper shell is ensured. The length of the third part is equal to or less than the sum of the widths of the groove and the flat area, that is, the end of the first heat dissipation fin away from the first part and the end of the groove away from the flat area can be flush, or the end of the first heat dissipation fin is located between the two ends of the groove. In some embodiments of the present application, the length of the flat area, the bending area and the upper shell body is equal to the width of the upper shell.

[0015] Preferably, the second heat dissipation fin comprises a connecting piece and connecting strips located on both sides of the connecting piece, one end of each of the two connecting strips is fixedly connected to the two sides of the end of the unlocking part close to the pull ring, and the connecting piece is located at the end of the two connecting strips away from the unlocking part; the length of the connecting strip is equal to the length of the pull ring, and the length of the connecting piece is equal to the width of the pull ring; and the two connecting strips are wrapped inside the pull ring. The second heat dissipation fin is connected with the unlocking part, and the second heat dissipation fin is extended to the handle end of the pull ring (the end of the pull ring away from the unlocking part), the two connecting strips are wrapped by the side wall of the pull ring, the connecting piece is close to the handle end of the pull ring, and the connecting piece is exposed. Since the second heat dissipation fin and the unlocking part are both metal parts, the second heat dissipation fin directly contacts the shell of the optical module through the metal unlocking part, the heat of the shell is transferred to the metal unlocking part, and then to the second heat dissipation fin, the heat is transferred to the connecting piece through the connecting strips, and the connecting piece transfers the heat to the outside, thereby achieving the effect of rapid heat dissipation.

[0016] Preferably, the material of the first heat dissipation fin is graphene, and the material of the second heat dissipation fin is metal. The thermal conductivity of graphene is 500 W / MK, which can effectively dissipate the heat at the upper shell, thereby improving the heat dissipation effect.

[0017] The present application also provides an optical module comprising the heat dissipation structure as described above.

[0018] Compared with the prior art, the heat dissipation structure of the optical module of the present application has the following advantages: the heat dissipation structure of the optical module of the present application is arranged on the upper shell and is fitted with the first heat dissipation fin, the heat is conducted to the outside through the first heat dissipation fin; and the second heat dissipation fin is arranged on the unlocking part, so that the second heat dissipation fin directly contacts the shell of the optical module through the unlocking part, and the heat of the shell is transferred to the second heat dissipation fin through the unlocking part, and the heat is conducted to the outside through the second heat dissipation fin. The combination of the first heat dissipation fin and the second heat dissipation fin is conducive to achieving the effect of rapid heat dissipation of the optical module. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0020] Figure 1 A perspective view of the optical module of the preferred embodiment of the present application;

[0021] Figure 2 An exploded view of the optical module of the preferred embodiment of the present application;

[0022] In the drawings: housing-1, upper shell-11, upper shell body-111, blocking part-112, lower shell-12, side plate-13, heat dissipation part-14, groove-141, flat area-142, bending area-143, pull ring-2, unlocking part-3, connecting plate-31, first heat dissipation fin-4, first part-41, second part-42, third part-43, second heat dissipation fin-5, connecting piece-51, connecting strip-52. DETAILED DESCRIPTION

[0023] In order to make the person skilled in the art better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, but not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort should be within the scope of protection of the present application.

[0024] Reference Figures 1 to 2 The optical module of the present embodiment includes a housing 1, a pull ring 2, an unlocking part 3 and a heat dissipation structure. The housing 1 includes an upper shell 11, a lower shell 12 and two side plates 13, and a cavity for accommodating optoelectronic components is formed between the upper shell 11, the lower shell 12 and the two side plates 13. The material of the housing 1 is zinc alloy.

[0025] The heat dissipation structure of the present embodiment includes a heat dissipation part 14 located on the upper shell 11, a first heat dissipation fin 4 attached to the heat dissipation part 14, and a second heat dissipation fin 5 fixedly connected to the unlocking part 3. The material of the first heat dissipation fin 4 of the present embodiment is graphene, which has high thermal conductivity and is beneficial to improve the heat dissipation effect. The material of the second heat dissipation fin 5 is copper. The second heat dissipation fin 5 directly contacts the zinc alloy optical module housing 1 through the unlocking part 3, so that the heat of the housing 1 is transferred to the second heat dissipation fin 5 through the unlocking part 3, and the heat is conducted to the outside through the second heat dissipation fin 5, which is beneficial to accelerate heat dissipation.

[0026] As Figure 1 and Figure 2 shown, the heat dissipation part 14 is located at the end of the upper shell 11 close to the pull ring 2, and the heat dissipation part 14 includes a groove 141, a flat area 142 and a bent area 143, which are connected in sequence on the upper surface of the upper shell 11. In addition, the upper shell 11 also includes an upper shell body 111 connected with the bent area 143. The upper shell body 111 is parallel to the flat area 142, and the lengths of the upper shell body 111, the bent area 143 and the flat area 142 are equal to the width of the upper shell 11. Among them, the bent area 143 is arranged obliquely, and the height from the lower surface of the flat area 142 to the lower shell 12 is greater than the height from the lower surface of the upper shell body 111 to the lower shell 12; the distance from the lower surface of the flat area 142 to the bottom surface of the groove 141 is equal to the thickness of the first heat dissipation fin 4, that is, when the first heat dissipation fin 4 is attached to the heat dissipation part 14, the upper surface of the first heat dissipation fin 4 corresponding to the flat area 142 is attached to the lower surface of the flat area 142, which is conducive to heat dissipation. The depth of the groove 141 is less than the thickness of the upper shell 11 and equal to the thickness of the first heat dissipation fin 4, that is, when the first heat dissipation fin 4 is partially attached to the groove 141, the upper surface of the first heat dissipation fin 4 is flush with the upper surface of the end of the upper shell 11, avoiding affecting the connection of the unlocking part 3; and the length of the groove 141 is less than the width of the upper shell 11, and in this embodiment, the groove 141 is located at the central position of the end of the upper shell 11, and the blocking part 112 is also provided on both sides of the groove 141, which is used to limit the first heat dissipation fin 4 in the width direction of the upper shell 11, avoiding its falling off.

[0027] As Figure 2 shown, the first heat dissipation fin 4 includes a first part 41, a second part 42 and a third part 43, and the second part 42 is also arranged obliquely, and the oblique angle is the same as that of the bent area 143. In this embodiment, the width of the second part 42 is equal to the width of the bent area 143, the lengths of the first part 41 and the second part 42 are equal to the width of the upper shell 11, the length of the third part 43 is equal to the length of the groove 141, and the length of the third part 43 is equal to the sum of the width of the groove 141 and the width of the flat area 142, so that the area of the entire first heat dissipation fin 4 is maximized, which is conducive to improving the heat dissipation effect.

[0028] As Figure 2As shown, the unlocking part 3 further comprises a connecting plate 32. When the first heat dissipation fin 4 is attached to the heat dissipation part 14, the upper surface of the first part 41 is attached to the lower surface of the upper shell body 111, the upper surface of the second part 42 is attached to the lower surface of the bending area 143, the upper surface of the end of the third part 43 close to the second part 42 is attached to the lower surface of the flat area 142, the remaining part of the third part 43 is located in the groove 141, and the lower surface thereof is attached to the bottom surface of the groove 141. The attachment between the surfaces is conducive to conducting heat out of the shell 1 and the first heat dissipation fin 4. The part of the third part 43 located in the groove 141 is also located below the connecting plate 32, and the height from the lower surface of the connecting plate 32 to the lower shell 12 is greater than the height from the upper surface of the first heat dissipation fin 4 to the lower shell 12, i.e., the connecting plate 32 and the part of the third part 43 below it are not attached, so that there is a gap between them, which is conducive to air circulation and heat conduction outwards through the gap.

[0029] As shown in Figure 2 The second heat dissipation fin 5 comprises a connecting piece 51 and connecting strips 52 located on both sides of the connecting piece 51. One end of each of the two connecting strips 52 is fixedly connected to the two sides of the end of the unlocking part 3 close to the pull ring 2, and the connecting piece 51 is located at the end of the two connecting strips 51 away from the unlocking part 3. The length of the connecting strip 52 is equal to the length of the pull ring 2, and the length of the connecting piece 51 is equal to the width of the pull ring 2. The two connecting strips 52 are arranged to be wrapped inside the side wall of the pull ring 2, and the connecting piece 51 is connected to the handle end of the pull ring 2 (the end of the pull ring 2 away from the unlocking part 3). By connecting the second heat dissipation fin 5 to the unlocking part 3, the second heat dissipation fin 5 directly contacts the shell 1 of the optical module through the unlocking part 3, so that the heat of the shell 1 is transferred to the unlocking part 3 and then to the second heat dissipation fin 5. The connecting strip 52 of the second heat dissipation fin 5 transfers heat to the connecting piece 51, and the connecting piece 51 transfers heat to the outside, thereby achieving the effect of rapid heat dissipation.

[0030] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A heat dissipation structure of an optical module, the optical module comprising a shell, a pull ring and an unlocking part, the shell comprising an upper shell, a lower shell and two side plates, a cavity being formed between the upper shell, the lower shell and the two side plates, characterized in that, The heat dissipation structure comprises a heat dissipation part on the upper shell and a first heat dissipation fin attached to the heat dissipation part; the heat dissipation structure further comprises a second heat dissipation fin fixedly connected to the unlocking part, and an end of the second heat dissipation fin away from the unlocking part is connected to an end of the pull ring away from the unlocking part; The heat dissipation part is located at an end of the upper shell close to the pull ring, and the heat dissipation part comprises a groove opened at one end of the upper shell upper surface, a flat area and a bent area, the flat area is located between the groove and the bent area; the upper shell further comprises an upper shell body connected to the bent area; the upper shell body is parallel to the flat area, and the bent area is arranged obliquely; the length of the groove is less than the width of the upper shell, the depth of the groove is less than the thickness of the upper shell, and the depth of the groove is equal to the thickness of the first heat dissipation fin; The second heat dissipation fin comprises a connecting piece and connecting strips located on both sides of the connecting piece, one end of each of the two connecting strips is fixedly connected to both sides of an end of the unlocking part close to the pull ring, and the connecting piece is located at an end of the two connecting strips away from the unlocking part; the length of the connecting strip is equal to the length of the pull ring, and the length of the connecting piece is equal to the width of the pull ring; the two connecting strips are wrapped inside the pull ring.

2. The heat dissipating structure according to claim 1, wherein One end of the flat area is connected to one end of the groove, the other end of the flat area is connected to one end of the bent area, and the distance from the lower surface of the flat area to the bottom surface of the groove is equal to the thickness of the first heat dissipation fin; the distance from the lower surface of the flat area to the height of the lower shell is greater than the distance from the lower surface of the upper shell body to the height of the lower shell.

3. The heat dissipating structure according to claim 1, wherein The first heat dissipation fin comprises a first part, a second part and a third part, the upper surface of the first part is attached to the lower surface of the upper shell body, the upper surface of the second part is attached to the lower surface of the bent area, the upper surface of an end of the third part close to the second part is attached to the lower surface of the flat area, and the lower surface of the remaining part of the third part is attached to the bottom surface of the groove.

4. The heat dissipating structure according to claim 3, wherein The unlocking part comprises a connecting plate, the connecting plate is located above the groove, the width of the connecting plate is greater than or equal to the width of the groove, and the height from the lower surface of the connecting plate to the groove is greater than the thickness of the first heat dissipation fin.

5. The heat dissipating structure according to claim 3, wherein The width of the second part is equal to the width of the bent area, and the length of the third part is equal to or less than the sum of the widths of the groove and the flat area.

6. The heat dissipating structure according to claim 1, wherein The material of the first heat dissipation fin is graphene, and the material of the second heat dissipation fin is metal.

7. An optical module comprising the heat dissipation structure according to any one of claims 1-6.

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