Optical module

Abstract

An optical module disclosed by the present invention comprises a shell, a pull ring, an unlocking part and a heat dissipation structure, the shell comprises an upper shell, a lower shell and two side plates, the heat dissipation structure comprises a heat dissipation part, a first heat dissipation fin and a second heat dissipation fin, the heat dissipation part is located at the end portion, close to the pull ring, of the upper shell, the first heat dissipation fin is attached to the heat dissipation part, and the second heat dissipation fin is fixedly connected with the unlocking part. The second radiating fin is in direct contact with the shell through the unlocking part, so that the heat of the shell is transferred to the second radiating fin through the unlocking part, and the heat is conducted to the outside through the second radiating fin; the heat dissipation part comprises a groove formed in one end of the upper surface of the upper shell, a flat area and a bent area, the groove is located in the middle of the end of the upper shell, and parts of the upper shell on the two sides of the groove form blocking parts; the first cooling fin comprises a first part, a second part and a third part, and the bending area and the second part are obliquely arranged and have the same inclination angle. According to the optical module, heat can be effectively conducted to the outside of the optical module, and the effect of rapid heat dissipation is achieved.

Description

[0001] This application is a divisional application of the invention patent application filed on December 30, 2021, with application number 202111652652.X and invention title "A heat dissipation structure for an optical module and an optical module". Technical Field

[0002] This invention relates to the field of communication equipment technology, and more specifically to a heat dissipation structure for an optical module and an optical module including the heat dissipation structure. Background Technology

[0003] An optical module, short for optical transceiver module, is a core component of optical communication, performing optical-to-electrical / electrical-to-optical conversion of optical signals. With the development of optical communication products, the bandwidth and speed of automatic receiving modules in the optical communication industry are increasing, as are the processing power of product ICs, leading to increasingly stringent heat dissipation requirements.

[0004] Currently, the industry's heat dissipation method uses the zinc alloy structural components to dissipate heat themselves, while also transferring heat to the stainless steel cage through the zinc alloy structural components. When hundreds of modules with multiple arrays in a cloud server room are used together, the overall heat is even higher, and the thermal conductivity of zinc alloy is only 112W / MK, resulting in poor heat dissipation of the optical modules. Summary of the Invention

[0005] In view of this, in order to overcome the shortcomings of the prior art, the purpose of this invention is to provide an improved optical module that effectively enhances the heat dissipation effect of the optical module.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A heat dissipation structure for an optical module, the optical module including a housing, a pull ring, and an unlocking part, the housing including 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 including 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 includes a second heat dissipation fin fixedly connected to the unlocking part, the end of the second heat dissipation fin away from the unlocking part being connected to the end of the pull ring away from the unlocking part.

[0007] By providing a heat dissipation section on the upper shell and attaching a first heat sink, heat is conducted to the outside through the first heat sink. A second heat sink is provided on the unlocking section, with the end of the second heat sink away from the unlocking section connected to the end of the pull ring away from the unlocking section. The second heat sink directly contacts the optical module housing through the unlocking section, allowing heat from the housing to be transferred to the second heat sink through the unlocking section, and then conducted to the outside through the second heat sink. The combination of the first and second heat sinks facilitates rapid heat dissipation for the optical module.

[0008] Preferably, the heat dissipation part is located at the end of the upper shell near the pull ring, and the heat dissipation part includes a groove, a flat area and a bending area formed at one end of the upper surface of the upper shell, the flat area being located between the groove and the bending area; the upper shell also includes a part connected to the bending area.

[0009] Preferably, the upper shell body is parallel to the flattening area, the bending area is inclined, and the height from the lower surface of the flattening 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 sink. The length of the groove is less than the width of the upper shell, meaning that the end of the upper shell near the unlocking part is not fully open along the width direction of the upper shell, but rather a portion remains unopened. In some embodiments of the present invention, the groove is located at the center of the end of the upper shell, and portions of the upper shell on both sides form blocking portions for fixing the first heat sink. The depth of the groove is equal to the thickness of the first heat sink, meaning that when a portion of the first heat sink is in contact with the groove, the upper surface of the first heat sink can remain flush with the upper surface of the end of the upper shell, avoiding interference with the connection of the unlocking part.

[0011] Preferably, one end of the flattened area is connected to one end of the groove, and the other end of the flattened area is connected to one end of the bending area. The distance from the lower surface of the flattened area to the bottom surface of the groove is equal to the thickness of the first heat sink. That is, when the first heat sink is attached to the heat dissipation part, the upper surface of the first heat sink corresponding to the flattened area is attached to the lower surface of the flattened area, which is beneficial for heat dissipation.

[0012] Preferably, the first heat sink includes 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 third part near the end of the second part is in contact with the lower surface of the flat area, and the lower surface of the remaining part is in contact with the bottom surface of the groove. This contact arrangement between the surfaces facilitates the conduction of heat away through the shell and the first heat sink.

[0013] Preferably, the unlocking part includes a connecting plate 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 sink. That is, the portion of the first heat sink located below the connecting plate in the unlocking part is not in contact with the connecting plate, creating a gap between them. This gap facilitates airflow, allowing heat from the portion of the first heat sink that is in contact with the upper shell to be conducted outwards.

[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 flattening area. The second part is also inclined, and its width is equal to the width of the bending area. This facilitates a good fit between the second part of the first heat sink and the bending area, preventing the first part from failing to reach the upper shell body. The length of the second part can be less than or equal to the length of the bending area. Similarly, the lengths of the first part and the third part can be less than or equal to the width of the upper shell, as long as the first heat sink fits snugly against the upper shell. The length of the third part is equal to or less than the sum of the widths of the groove and the flattening area, meaning that the end of the first heat sink away from the first part and the end of the groove away from the flattening area can be flush, or the end of the first heat sink can be located between the two ends of the groove. In some embodiments of the present invention, the lengths of the flattening area, the bending area, and the upper shell body are all equal to the width of the upper shell.

[0015] Preferably, the second heat sink includes 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 unlocking part near the pull ring. The connecting piece is located at the ends 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. By connecting the second heat sink to the unlocking part and extending the second heat sink to the pull ring handle end (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, and the connecting piece is near the pull ring handle end and exposed. Since both the second heat sink and the unlocking part are metal parts, the second heat sink directly contacts the housing of the optical module through the metal unlocking part, allowing the heat from the housing to be transferred to the metal unlocking part, and then to the metal second heat sink. The heat is transferred to the connecting strip through the connecting strip, and the connecting strip then transfers the heat to the outside, thereby achieving a rapid heat dissipation effect.

[0016] Preferably, the first heat sink is made of graphene, and the second heat sink is made of metal. Graphene has a thermal conductivity of 500W / MK, which can effectively dissipate heat from the upper shell and improve the heat dissipation effect.

[0017] The present invention also provides an optical module including the heat dissipation structure described above.

[0018] Compared to existing technologies, the advantages of this invention are as follows: The optical module of this invention, by providing a heat dissipation section on the upper shell and attaching a first heat sink, conducts heat to the outside through the first heat sink; and by providing a second heat sink on the unlocking section, the second heat sink directly contacts the optical module housing through the unlocking section, allowing heat from the housing to be transferred to the second heat sink through the unlocking section, and then conducted to the outside through the second heat sink. The combination of the first and second heat sinks facilitates rapid heat dissipation of the optical module. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the optical module according to a preferred embodiment of the present invention; Figure 2 This is an exploded view of the optical module according to a preferred embodiment of the present invention; In the attached diagram: Casing-1, Upper Casing-11, Upper Casing Body-111, Blocking Part-112, Lower Casing-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 Plate-51, Connecting Strip-52. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0022] See Figures 1 to 2 The optical module in this 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 housing 1 is made of zinc alloy.

[0023] The heat dissipation structure of this embodiment includes a heat dissipation part 14 located on the upper shell 11, a first heat sink 4 attached to the heat dissipation part 14, and a second heat sink 5 fixedly connected to the unlocking part 3. The first heat sink 4 in this embodiment is made of graphene, which has high thermal conductivity and is beneficial to improving heat dissipation. The second heat sink 5 is made of copper. The second heat sink 5 directly contacts the zinc alloy optical module shell 1 through the unlocking part 3, so that the heat of the shell 1 is transferred to the second heat sink 5 through the unlocking part 3, and then the heat is conducted to the outside through the second heat sink 5, which is beneficial to accelerating heat dissipation.

[0024] like Figure 1 and Figure 2As shown, the heat dissipation part 14 is located at the end of the upper shell 11 near the pull ring 2. The heat dissipation part 14 includes a groove 141 formed at one end of the upper surface of the upper shell 11, a flat area 142, and a bending area 143, which are connected in sequence. In addition, the upper shell 11 also includes an upper shell body 111 connected to the bending area 143. The upper shell body 111 is parallel to the flat area 142, and the lengths of the upper shell body 111, the bending area 143, and the flat area 142 are all equal to the width of the upper shell 11. Among them, the bending area 143 is inclined, 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 beneficial for heat dissipation. The depth of the groove 141 is less than the thickness of the upper shell 11 but equal to the thickness of the first heat sink 4. That is, when a part of the first heat sink 4 is in contact with the groove 141, the upper surface of the first heat sink 4 is flush with the upper surface of the end of the upper shell 11 to avoid affecting the connection of the unlocking part 3. The length of the groove 141 is less than the width of the upper shell 11. In this embodiment, the groove 141 is located in the center of the end of the upper shell 11. The groove 141 is also provided with blocking parts 112 on both sides to limit the first heat sink 4 along the width direction of the upper shell 11 to prevent it from slipping.

[0025] like Figure 2 As shown, the first heat sink 4 includes a first part 41, a second part 42, and a third part 43. The second part 42 is also inclined, and its inclination angle is the same as that of the bending area 143. In this embodiment, the width of the second part 42 is equal to the width of the bending area 143, the lengths of the first part 41 and the second part 42 are both 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 widths of the groove 141 and the flat area 142, thereby maximizing the area of ​​the entire first heat sink 4 and improving the heat dissipation effect.

[0026] like Figure 2As shown, the unlocking part 3 also includes a connecting plate 31. When the first heat sink 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, and the upper surface of the third part 43 near the end of 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 its lower surface is attached to the bottom surface of the groove 141. The attachment of each surface facilitates the conduction of heat through the shell 1 and the first heat sink 4. The part of the third part 43 located in the groove 141 is also located below the connecting plate 31, and the height from the lower surface of the connecting plate 31 to the lower shell 12 is greater than the height from the upper surface of the first heat sink 4 to the lower shell 12. That is, the connecting plate 31 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 facilitates the conduction of heat outward through the gap.

[0027] like Figure 2 As shown, the second heat sink 5 includes a connecting piece 51 and connecting strips 52 located on both sides of the connecting piece 51. One end of each connecting strip 52 is fixedly connected to the two sides of the unlocking part 3 near the pull ring 2. The connecting piece 51 is located at the ends of the two connecting strips 52 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 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 sink 5 to the unlocking part 3, the second heat sink 5 directly contacts the housing 1 of the optical module through the unlocking part 3, allowing heat from the housing 1 to transfer to the unlocking part 3, and then to the second heat sink 5. Heat is then transferred to the connecting strips 52 of the second heat sink 5, and finally to the connecting piece 51, which in turn transfers the heat to the outside, thus achieving rapid heat dissipation.

Claims

1. An optical module, comprising a housing, a pull ring, an unlocking part, and a heat dissipation structure, wherein the housing comprises an upper shell, a lower shell, and two side plates, characterized in that, The heat dissipation structure includes a heat dissipation part, a first heat dissipation fin, and a second heat dissipation fin. The heat dissipation part is located at the end of the upper shell near the pull ring. The first heat dissipation fin is attached to the heat dissipation part. The second heat dissipation fin is fixedly connected to the unlocking part. The second heat dissipation fin directly contacts the shell through the unlocking part so that the heat of the shell can be transferred to the second heat dissipation fin through the unlocking part and then conducted to the outside through the second heat dissipation fin. The heat dissipation section includes a groove, a flat area, and a bending area formed at one end of the upper surface of the upper shell. The groove, flat area, and bending area are connected in sequence. The groove is located at the center of the end of the upper shell. Parts of the upper shell on both sides of the groove form blocking parts for fixing the first heat dissipation fin. The first heat dissipation fin includes a first part, a second part, and a third part. The bending area and the second part are both inclined. The inclination angle of the second part is the same as the inclination angle of the bending area.

2. The optical module according to claim 1, characterized in that, The upper shell also includes an upper shell body, which is connected to the bending area. The lengths of the upper shell body, the bending area, and the flattening area are all equal to the width of the upper shell.

3. The optical module according to claim 2, characterized in that, The distance from the lower surface of the flattened area to the bottom surface of the groove is equal to the thickness of the first heat sink, so that when the first heat sink is attached to the heat dissipation part, the upper surface of the first heat sink corresponding to the flattened area portion is attached to the lower surface of the flattened area.

4. The optical module according to claim 2, characterized in that, When a portion of the first heat sink is in contact with the groove, the upper surface of the first heat sink remains flush with the upper surface of the upper shell end.

5. The optical module according to claim 1, characterized in that, The unlocking part includes a connecting plate located above the groove, and the height of the lower surface of the connecting plate from the lower shell is greater than the height of the upper surface of the first heat sink from the lower shell.

6. The optical module according to claim 5, characterized in that, The upper surface of the third part near the end of the second part is in contact with the lower surface of the flat area. The remaining part of the third part is located in the groove, and the part of the third part located in the groove is located below the connecting plate. The part of the first heat sink below the connecting plate is not in contact with the connecting plate to allow for a gap between them. The heat of the part of the first heat sink that is in contact with the upper shell is conducted outward through the gap.

7. The optical module according to claim 1, characterized in that, The width of the second part is equal to the width of the bending area so that the second part fits into the bending area, and the length of the second part is less than or equal to the length of the bending area.

8. The optical module according to claim 7, characterized in that, The lengths of the first part and the third part are both less than or equal to the width of the upper shell, 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.

9. The optical module according to claim 3, characterized in that, The second heat sink includes a connecting piece and connecting strips located on both sides of the connecting piece. The side wall of the pull ring wraps around the two connecting strips. The end of the connecting piece closer to the pull ring and away from the unlocking part is exposed.

10. The optical module according to claim 9, characterized in that, The first heat sink is made of graphene, the second heat sink and the unlocking part are both made of metal, and the shell is made of zinc alloy.

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