JP6036433B2 - Radiator - Google Patents

Description

  The present invention relates to a radiator.

  Electronic components mounted on a printed circuit board often include components that generate heat during operation. When the temperature of the electronic component rises due to heat generation, it causes an abnormal operation of the electronic component. For this reason, it has been performed that a heat sink such as a heat sink for releasing heat generated from the electronic component to the surroundings is attached to the electronic component.

  The radiator has a plurality of fins formed of a material having a relatively high heat transfer coefficient. When the cooling air flows in the flow path between the fins, the heat generated from the electronic component to which the radiator is attached can be released to the surroundings through the surface of the fin.

  In recent years, the density of parts has increased in the entire device including the printed circuit board, and it may be difficult to arrange the fins of the radiators attached to the electronic parts in the same direction as the flow direction of the cooling air. is there. As a situation where the direction of the fins of the radiator and the flow direction of the cooling air do not coincide with each other, for example, a printed circuit board in which an air intake portion that sucks air that becomes cooling air and an exhaust portion that discharges air are arranged in the heat radiator A situation is assumed in which they are arranged at positions diagonal to each other. When the direction of the fins of the radiator and the flow direction of the cooling air do not coincide with each other, the fins become walls and obstruct the flow of the cooling air. As a result, the heat dissipation efficiency of the radiator is reduced.

  On the other hand, a mounting structure has been proposed in which the radiator is attached to the electronic component so that the direction of the fin matches the flow direction of the cooling air. In this attachment structure, a finned plate as a heat radiator in which fins are formed is rotatably attached to a cover member attached to an electronic component.

JP-A-2-265186 JP 2011-77247 A

  However, in the prior art, there is a problem that the heat radiation efficiency is lowered and the workability when setting the direction of the fins of the radiator is poor.

  That is, in the conventional technique in which a finned plate as a heat radiator is rotatably attached to a cover member, the fin orientation of the finned plate attached to the cover member is not fixed, so the fin orientation is set to a desired orientation. There was a risk that the workability would deteriorate. Moreover, in the prior art, since the finned plate as a radiator is attached via the elasticity of the cover member or a rotating mechanism such as a rolling bearing, the thermal resistance between the electronic component to be radiated and the finned plate is reduced. As a result, the heat dissipation efficiency may be reduced.

  The disclosed technique has been made in view of the above, and provides a radiator that can improve heat dissipation efficiency and can improve workability when setting the direction of fins of the radiator. The purpose is to do.

  In one aspect, the radiator disclosed in the present application includes a finned plate and a support plate. The finned plate is formed with fins on one surface and convex portions on the other surface. The support plate is attached to the heat generating component, and is arranged on a surface opposite to the surface in contact with the heat generating component, in association with a predetermined rotation angle along a circumferential direction that circulates an axis orthogonal to the surface. Has a recess. When the convex plate is engaged with at least one of the plurality of concave portions, the support plate rotates the fin in the circumferential direction by the rotation angle corresponding to the concave portion. Supports the finned plate.

  According to one aspect of the radiator disclosed in the present application, it is possible to improve the heat radiation efficiency and improve the workability when setting the direction of the fins of the heat radiator.

FIG. 1A is a perspective view of a housing of a communication device in which a radiator according to the first embodiment is incorporated as viewed from the front. 1B is a cross-sectional view taken along line AA of the housing of the communication apparatus shown in FIG. 1A. FIG. 2A is a side view of the radiator according to the first embodiment. FIG. 2B is a plan view of the radiator according to the first embodiment. FIG. 3 is a side view of the finned plate included in the radiator according to the first embodiment. FIG. 4 is a plan view of a support plate provided in the radiator according to the first embodiment. FIG. 5A is a diagram illustrating an example (part 1) of a support mode of the finned plate in the first embodiment. FIG. 5B is a diagram illustrating an example (No. 2) of a support mode of the finned plate in the first embodiment. FIG. 6A is a side view of the radiator according to the second embodiment. FIG. 6B is a plan view of the radiator according to the second embodiment. FIG. 7 is a side view of the finned plate included in the radiator according to the second embodiment. FIG. 8 is a plan view of a support plate provided in the radiator according to the second embodiment. FIG. 9A is a diagram illustrating an example (part 1) of a support mode of the finned plate in the second embodiment. FIG. 9B is a diagram illustrating an example (No. 2) of a support mode of the finned plate in the second embodiment. FIG. 9C is a diagram illustrating an example (No. 3) of a support mode of the finned plate in the second embodiment. FIG. 9D is a diagram illustrating an example (No. 4) of a support mode of the finned plate in the second embodiment. FIG. 9E is a diagram illustrating a modification of the support mode of the finned plate in the second embodiment. FIG. 10A is a side view of the radiator according to the third embodiment. FIG. 10B is a plan view of the radiator according to the third embodiment. FIG. 11 is a side view of the finned plate included in the radiator according to the third embodiment. FIG. 12 is a plan view of a support plate provided in the radiator according to the third embodiment. FIG. 13A is a diagram illustrating an example (part 1) of a support mode of the finned plate in the third embodiment. FIG. 13B is a diagram illustrating an example (No. 2) of a support mode of the finned plate in the third embodiment. FIG. 13C is a diagram illustrating an example (No. 3) of a support mode of the finned plate in the third embodiment.

  Below, the Example of the heat radiator which this application discloses is described in detail based on drawing. In the following embodiments, as a radiator disclosed in the present application, a radiator attached to an electronic component on a printed circuit board disposed in a housing of a communication device will be described as an example.

  The communication device is a communication device represented by, for example, a server device, an exchange, a router, a packet transmission device, and a LAN switch. The housing is, for example, a server rack. The electronic component is a processing device represented by, for example, a CPU (Central Processing Unit) and a DSP (Digital Signal Processor). The electronic component may be a storage device represented by, for example, a RAM (Random Access Memory), a ROM (Read Only Memory), or the like. The disclosed technology is not limited by the following embodiments.

  FIG. 1A is a perspective view of a housing of a communication device in which a radiator according to the first embodiment is incorporated as viewed from the front. 1B is a cross-sectional view taken along line AA of the housing of the communication apparatus shown in FIG. 1A.

  As shown in FIG. 1A, a plurality of printed circuit boards 11 are arranged in a layered manner in the vertical direction in the housing 10. In addition, an intake surface 10 a including an intake hole is formed on the front surface of the housing 10. A cooling device 13 is disposed on the back surface of the housing 10. As shown in FIG. 1B, the intake surface 10 a and the cooling device 13 are respectively arranged at diagonal positions with respect to the rectangular printed board 11.

  The cooling device 13 is an axial fan, for example. The cooling device 13 generates cooling air that flows from the intake hole of the intake surface 10 a to the front surface of the cooling device 13 inside the housing 10. The cooling air is discharged from the rear surface of the cooling device 13 to the outside of the housing 10. In other words, the cooling air flows in a direction having a diagonal relationship with respect to the printed circuit board 11 so as to connect the intake surface 10a and the cooling device 13 that are respectively disposed at positions diagonal to the printed circuit board 11. Shed.

  A heat generating component 12 is mounted on the printed circuit board 11. The heat generating component 12 is an electronic component that generates heat during operation. The heat generating component 12 is, for example, a processing device such as a CPU or a storage device such as a RAM. A heat radiator 100 for releasing heat generated from the heat generating component 12 to the surroundings is attached to the heat generating component 12.

  Here, details of the configuration of the radiator 100 will be described with reference to FIGS. 2A, 2 </ b> B, 3, and 4. FIG. 2A is a side view of the radiator according to the first embodiment. FIG. 2B is a plan view of the radiator according to the first embodiment. FIG. 3 is a side view of the finned plate included in the radiator according to the first embodiment. FIG. 4 is a plan view of a support plate provided in the radiator according to the first embodiment.

  2A and 2B, the radiator 100 includes a finned plate 110 and a support plate 120 that is attached to the heat generating component 12 and supports the finned plate 110. The finned plate 110 is formed of a material having high thermal conductivity such as aluminum or copper. A plurality of fins 111 are formed on the upper surface of the finned plate 110. The fins 111 extend parallel to each other in a predetermined direction. Moreover, as shown in FIG. 3, the convex part 112 is formed in the lower surface of the board 110 with a fin.

  The support plate 120 is attached to the heat generating component 12 and supports the finned plate 110. The support plate 120 is formed of a material having high thermal conductivity such as aluminum or copper. The support plate 120 is attached to the heat generating component 12 using, for example, an adhesive having a relatively high thermal conductivity.

  On the surface of the support plate 120 opposite to the surface in contact with the heat-generating component 12 (hereinafter simply referred to as “opposite surface”), as shown in FIG. The recess 121 is formed. Here, an axis orthogonal to the opposite surface of the support plate 120 is defined as an orthogonal axis C. The plurality of recesses 121 are arranged in association with a predetermined rotation angle along the circulation direction that circulates the orthogonal axis C, and are radially centered on the intersection C1 between the opposite surface of the support plate 120 and the orthogonal axis C. To distract. For example, in FIG. 4, the direction in which the orthogonal axis C circulates counterclockwise is defined as the forward direction of the circulatory direction, and the direction in which the orthogonal axis C is circulated clockwise is defined as the reverse direction of the circulatory direction. Then, the recess 121 corresponding to the rotation angle “−30 °” is disposed at a position where the recess 121 corresponding to the rotation angle “0 °” is rotated by “−30 °” in the reverse direction of the circulation direction. Further, the recess 121 corresponding to the rotation angle “−60 °” is disposed at a position where the recess 121 corresponding to the rotation angle “0 °” is rotated by “−60 °” in the reverse direction of the circulation direction.

  When the convex portion 112 is engaged with any one of the plurality of concave portions 121, the support plate 120 is finned in the circumferential direction by a rotation angle corresponding to the single concave portion 121 engaged with the convex portion 112. The finned plate 110 is supported while the 111 is rotated. When the finned plate 110 is supported in a state in which the fins 111 are rotated in the circumferential direction, the direction of the fins 111 is fixed so as to coincide with the flow direction of the cooling air with respect to the heat generating component 12. The direction of the fin 111 is, for example, the extending direction of the fin 111. The flow direction of the cooling air with respect to the heat generating component 12 is, for example, the flow direction of the cooling air flowing in a direction having a diagonal relationship with the printed circuit board 11.

  Here, the support mode of the finned plate 110 will be described with reference to FIGS. 5A and 5B. FIG. 5A is a diagram illustrating an example (part 1) of a support mode of the finned plate in the first embodiment. In FIG. 5A, arrows indicate the flow direction of the cooling air with respect to the heat generating component 12. In the example shown in FIG. 5A, the support plate 120 has the convex portion 112 of the finned plate 110 engaged with the concave portion 121 corresponding to the rotation angle “−30 °” among the plurality of concave portions 121. In this case, the support plate 120 supports the finned plate 110 in a state where the fin 111 is rotated in the reverse direction of the circumferential direction by the rotation angle “−30 °” corresponding to the concave portion 121 engaged with the convex portion 112. To do. Thereby, the direction of the fin 111 is fixed so that it may correspond with the flow direction of the cooling air with respect to the heat-emitting component 12. FIG.

  FIG. 5B is a diagram illustrating an example (No. 2) of a support mode of the finned plate in the first embodiment. In FIG. 5B, arrows indicate the flow direction of the cooling air with respect to the heat generating component 12. In the example illustrated in FIG. 5B, the support plate 120 has the convex portion 112 of the finned plate 110 engaged with the concave portion 121 corresponding to the rotation angle “−60 °” among the plurality of concave portions 121. In this case, the support plate 120 supports the finned plate 110 in a state where the fin 111 is rotated in the reverse direction of the circumferential direction by the rotation angle “−60 °” corresponding to the concave portion 121 engaged with the convex portion 112. To do. Thereby, the direction of the fin 111 is fixed so that it may correspond with the flow direction of the cooling air with respect to the heat-emitting component 12. FIG.

  As described above, the radiator 100 according to the first embodiment includes the support plate 120 in which the plurality of concave portions 121 arranged in association with a predetermined rotation angle along the circulation direction that circulates the orthogonal axis C. And having the convex portion 112 of the finned plate 110 engaged with at least one concave portion 121. For this reason, the support plate 120 according to the first embodiment can support the finned plate 110 in a state where the fin 111 is rotated in the circumferential direction by a rotation angle corresponding to the concave portion 121 engaged with the convex portion 112. As a result, the radiator 100 according to the first embodiment can fix the direction of the fins 111 so as to coincide with the flow direction of the cooling air, compared with the conventional technique in which the finned plate is rotatably attached, The workability when setting the direction of the fins of the radiator can be improved. Moreover, since the heat radiator 100 which concerns on Example 1 supports the board 110 with a fin using the support plate 120 attached to the heat-emitting component 12, it reduces the thermal resistance between the heat-generating component 12 and the board 110 with a fin. As a result, the heat dissipation efficiency can be improved. That is, the heat radiator 100 according to the first embodiment can improve the heat radiation efficiency and can improve the workability when setting the direction of the fins of the heat radiator.

  Further, the plurality of recesses 121 of the support plate 120 according to the first embodiment are arranged in association with a predetermined rotation angle along the circulation direction that circulates the orthogonal axis C, and are orthogonal to the opposite surface of the support plate 120. It extends radially around the intersection C1 with the axis C. Then, when the convex portion 112 is engaged with any one of the plurality of concave portions 121, the support plate 120 rotates in the direction of rotation corresponding to the single concave portion 121 engaged with the convex portion 112. The finned plate 110 is supported while the fins 111 are rotated. For this reason, the worker who performs the work of setting the direction of the fins of the heatsink visually recognizes the recesses 121 extending radially and visually grasps the rotation angle of the fins 111, while setting the direction of the fins 111 to a desired direction. Can be fixed to. As a result, the radiator 100 according to the first embodiment can further improve the workability when setting the direction of the fins of the radiator.

  Next, the configuration of the radiator 200 according to the second embodiment will be described. FIG. 6A is a side view of the radiator according to the second embodiment. FIG. 6B is a plan view of the radiator according to the second embodiment. FIG. 7 is a side view of the finned plate included in the radiator according to the second embodiment. FIG. 8 is a plan view of a support plate provided in the radiator according to the second embodiment. In addition, in the heat radiator 200 which concerns on Example 1, the same code | symbol is provided to the structure same as the heat radiator 100 which concerns on Example 1. FIG.

  As shown in FIGS. 6A and 6B, the radiator 200 includes a finned plate 110 and a support plate 120 that is attached to the heat generating component 12 and supports the finned plate 110. The finned plate 110 is formed of a material having high thermal conductivity such as aluminum or copper. A plurality of fins 111 are formed on the upper surface of the finned plate 110. The fins 111 extend parallel to each other in a predetermined direction. Further, a convex portion 212 is formed on the lower surface of the finned plate 110 as shown in FIG.

  The convex portion 212 corresponds to the intersection of the orthogonal axis C with the surface of the lower surface of the finned plate 110 that is opposite to the surface that contacts the heat generating component 12 of the support plate 120 (hereinafter simply referred to as the “opposite surface”). It arrange | positions in the position offset toward the outer edge of the board 110 with a fin from a position.

  The support plate 120 is attached to the heat generating component 12 and supports the finned plate 110. The support plate 120 is formed of a material having high thermal conductivity such as aluminum or copper. The support plate 120 is attached to the heat generating component 12 using, for example, an adhesive having a relatively high thermal conductivity.

  As shown in FIG. 8, a plurality of concave portions 221 that can be engaged with the convex portions 212 of the finned plate 110 are formed on the opposite surface of the support plate 120. Here, an axis orthogonal to the opposite surface of the support plate 120 is defined as an orthogonal axis C. The plurality of recesses 221 are arranged in association with a predetermined rotation angle along the circulation direction that circulates around the orthogonal axis C, and are radial from the intersection C1 between the opposite surface of the support plate 120 and the orthogonal axis C. To distract. For example, in FIG. 8, the direction in which the orthogonal axis C circulates counterclockwise is defined as the forward direction of the circulatory direction, and the direction in which the orthogonal axis C is circulated clockwise is defined as the reverse direction of the circulatory direction. Then, the concave portion 221 corresponding to the rotation angle “90 °” is arranged at a position where the concave portion 221 corresponding to the rotation angle “0 °” is rotated by “90 °” in the forward direction of the circulation direction. Further, the recess 221 corresponding to the rotation angle “135 °” is disposed at a position where the recess 221 corresponding to the rotation angle “0 °” is rotated by “135 °” in the forward direction of the circulation direction. Further, the recess 221 corresponding to the rotation angle “−30 °” is arranged at a position where the recess corresponding to the rotation angle “0 °” is rotated by “−30 °” in the reverse direction of the circulation direction. Further, the recess 221 corresponding to the rotation angle “−60 °” is arranged at a position where the recess 221 corresponding to the rotation angle “0 °” is rotated by “−60 °” in the reverse direction of the circulation direction.

  When the convex portion 212 is engaged with any one of the plurality of concave portions 221, the support plate 120 is finned in the circumferential direction by a rotation angle corresponding to the single concave portion 221 engaged with the convex portion 212. The finned plate 110 is supported while the 111 is rotated. When the finned plate 110 is supported in a state in which the fins 111 are rotated in the circumferential direction, the direction of the fins 111 is fixed so as to coincide with the flow direction of the cooling air with respect to the heat generating component 12. The direction of the fin 111 is, for example, the extending direction of the fin 111. The flow direction of the cooling air with respect to the heat generating component 12 is, for example, the flow direction of the cooling air flowing in a direction having a diagonal relationship with the printed circuit board 11.

  Here, the support mode of the finned plate 110 will be described with reference to FIGS. 9A to 9B. FIG. 9A is a diagram illustrating an example (part 1) of a support mode of the finned plate in the second embodiment. In FIG. 9A, the arrows indicate the flow direction of the cooling air with respect to the heat generating component 12. In the example shown in FIG. 9A, the support plate 120 has the convex portion 212 of the finned plate 110 engaged with the concave portion 221 corresponding to the rotation angle “90 °” among the plurality of concave portions 221. In this case, the support plate 120 supports the finned plate 110 in a state where the fin 111 is rotated in the forward direction of the circumferential direction by the rotation angle “90 °” corresponding to the concave portion 221 engaged with the convex portion 212. . Thereby, the direction of the fin 111 is fixed so that it may correspond with the flow direction of the cooling air with respect to the heat-emitting component 12. FIG.

  FIG. 9B is a diagram illustrating an example (No. 2) of a support mode of the finned plate in the second embodiment. In FIG. 9B, arrows indicate the flow direction of the cooling air with respect to the heat generating component 12. In the example shown in FIG. 9B, the support plate 120 has the convex portion 212 of the finned plate 110 engaged with the concave portion 221 corresponding to the rotation angle “135 °” among the plurality of concave portions 221. In this case, the support plate 120 supports the finned plate 110 in a state where the fin 111 is rotated in the forward direction of the circumferential direction by the rotation angle “135 °” corresponding to the concave portion 221 engaged with the convex portion 212. . Thereby, the direction of the fin 111 is fixed so that it may correspond with the flow direction of the cooling air with respect to the heat-emitting component 12. FIG.

  FIG. 9C is a diagram illustrating an example (No. 3) of a support mode of the finned plate in the second embodiment. In FIG. 9C, the arrows indicate the flow direction of the cooling air with respect to the heat generating component 12. In the example shown in FIG. 9C, the support plate 120 has the convex portion 212 of the finned plate 110 engaged with the concave portion 221 corresponding to the rotation angle “−30 °” among the plurality of concave portions 221. In this case, the support plate 120 supports the finned plate 110 in a state where the fin 111 is rotated in the reverse direction of the circumferential direction by the rotation angle “−30 °” corresponding to the concave portion 221 engaged with the convex portion 212. To do. Thereby, the direction of the fin 111 is fixed so that it may correspond with the flow direction of the cooling air with respect to the heat-emitting component 12. FIG.

  FIG. 9D is a diagram illustrating an example (No. 4) of a support mode of the finned plate in the second embodiment. In FIG. 9D, the arrows indicate the flow direction of the cooling air with respect to the heat generating component 12. In the example shown in FIG. 9D, the support plate 120 has the convex portion 212 of the finned plate 110 engaged with the concave portion 221 corresponding to the rotation angle “−60 °” among the plurality of concave portions 221. In this case, the support plate 120 supports the finned plate 110 in a state where the fin 111 is rotated in the reverse direction of the circumferential direction by the rotation angle “−60 °” corresponding to the concave portion 221 engaged with the convex portion 212. To do. Thereby, the direction of the fin 111 is fixed so that it may correspond with the flow direction of the cooling air with respect to the heat-emitting component 12. FIG.

  As described above, the plurality of recesses 221 of the support plate 120 according to the second embodiment are arranged in association with a predetermined rotation angle along the circulation direction that circulates the orthogonal axis C, and on the opposite side of the support plate 120. The surface is extended radially from the intersection C1 of the plane C and the orthogonal axis C as a base point. Further, the convex portion 212 of the finned plate 110 in the second embodiment is disposed at a position offset from the position corresponding to the intersection C1 toward the outer edge of the finned plate 110 on the lower surface of the finned plate 110. Then, when the convex portion 212 is engaged with any one of the plurality of concave portions 221, the support plate 120 rotates in the direction of rotation corresponding to the single concave portion 221 engaged with the convex portion 212. The finned plate 110 is supported while the fins 111 are rotated. For this reason, the operator who performs the work of setting the direction of the fins of the heatsink visually recognizes the recesses 221 extending radially and visually grasps the rotation angle of the fins 111, while setting the direction of the fins 111 to a desired direction. Can be fixed to. As a result, the radiator 200 according to the second embodiment can further improve the workability when setting the direction of the fins of the radiator. Furthermore, since the heat radiator 200 according to the second embodiment is arranged at a position where the convex portion 212 of the finned plate 110 is offset toward the outer edge of the finned plate 110, the size of the concave portion 221 that engages with the convex portion 212. Can be minimized, and the strength of the support plate 120 can be maintained.

(Modification)
In the second embodiment, the case where the support plate 120 supports the finned plate 110 in a state where the fins 111 are rotated is shown. However, the fin 111 of the finned plate 110 is rotated by rotating the support plate 120 itself. May be rotated. FIG. 9E is a diagram illustrating a modification of the support mode of the finned plate in the second embodiment. In the example shown in FIG. 9E, by rotating the support plate 120 shown in FIG. 9C by “90 °” in the forward direction in the circumferential direction, the fins 111 of the finned plate 110 become “90 °” in the forward direction in the circumferential direction. The mode rotated only is shown. In this way, by rotating the support plate 120 itself, the direction of the fins 111 can be freely changed so as to coincide with the flow direction of the cooling air with respect to the heat generating component 12.

  Next, the configuration of the radiator 300 according to the third embodiment will be described. FIG. 10A is a side view of the radiator according to the third embodiment. FIG. 10B is a plan view of the radiator according to the third embodiment. FIG. 11 is a side view of the finned plate included in the radiator according to the third embodiment. FIG. 12 is a plan view of a support plate provided in the radiator according to the third embodiment. In addition, in the heat radiator 300 which concerns on Example 3, the same code | symbol is provided to the structure same as the heat radiator 100 which concerns on Example 1. FIG.

  As shown in FIGS. 10A and 10B, the radiator 300 includes a finned plate 110 and a support plate 120 that is attached to the heat generating component 12 and supports the finned plate 110. The finned plate 110 is formed of a material having high thermal conductivity such as aluminum or copper. A plurality of fins 111 are formed on the upper surface of the finned plate 110. The fins 111 extend parallel to each other in a predetermined direction. Moreover, as shown in FIG. 11, two convex portions 312 are formed on the lower surface of the finned plate 110. In the present embodiment, an example in which two convex portions 312 are formed is shown, but at least two convex portions 312 may be formed on the lower surface of the finned plate 110.

  The support plate 120 is attached to the heat generating component 12 and supports the finned plate 110. The support plate 120 is formed of a material having high thermal conductivity such as aluminum or copper. The support plate 120 is attached to the heat generating component 12 using, for example, an adhesive having a relatively high thermal conductivity.

  On the surface opposite to the surface that contacts the heat generating component 12 of the support plate 120 (hereinafter, simply referred to as “the surface on the opposite side”), as shown in FIG. A recess 321 is formed. Here, an axis orthogonal to the opposite surface of the support plate 120 is defined as an orthogonal axis C. The plurality of recesses 321 are arranged in an arc shape in association with a predetermined rotation angle along the circulation direction that circulates around the orthogonal axis C. For example, in FIG. 12, the direction in which the orthogonal axis C circulates counterclockwise is defined as the forward direction of the circulatory direction, and the direction in which the orthogonal axis C is circulated clockwise is defined as the reverse direction of the circulatory direction. Then, the two recesses 321 corresponding to the rotation angle “−30 °” are arranged at positions where the two recesses 321 corresponding to the rotation angle “0 °” are rotated in the reverse direction of the circulation direction by “−30 °”. Is done. Further, the two recesses 321 corresponding to the rotation angle “−45 °” are arranged at positions where the two recesses 321 corresponding to the rotation angle “0 °” are rotated in the opposite direction of the circumferential direction by “−45 °”. Is done. Further, the two recesses 321 corresponding to the rotation angle “−60 °” are arranged at positions where the two recesses 321 corresponding to the rotation angle “0 °” are rotated in the opposite direction of the circumferential direction by “−60 °”. Is done. Further, the two recesses 321 corresponding to the rotation angle “−90 °” are arranged at positions where the two recesses 321 corresponding to the rotation angle “0 °” are rotated in the reverse direction of the circulation direction by “−60 °”. Is done.

  When the two convex portions 312 are engaged with the two concave portions 321 among the plurality of concave portions 321, the support plate 120 rotates in the rotation direction corresponding to the two concave portions 321 engaged with the two convex portions 312. The finned plate 110 is supported while the fins 111 are rotated. When the finned plate 110 is supported in a state in which the fins 111 are rotated in the circumferential direction, the direction of the fins 111 is fixed so as to coincide with the flow direction of the cooling air with respect to the heat generating component 12. The direction of the fin 111 is, for example, the extending direction of the fin 111. The flow direction of the cooling air with respect to the heat generating component 12 is, for example, the flow direction of the cooling air flowing in a direction having a diagonal relationship with the printed circuit board 11.

  Here, the support mode of the finned plate 110 will be described with reference to FIGS. 13A to 13C. FIG. 13A is a diagram illustrating an example (part 1) of a support mode of the finned plate in the third embodiment. In FIG. 13A, arrows indicate the flow direction of the cooling air with respect to the heat generating component 12. In the example shown in FIG. 13A, the support plate 120 has two convex portions 312 of the finned plate 110 engaged with two concave portions 321 corresponding to the rotation angle “−30 °” among the plurality of concave portions 321. In this case, the support plate 120 has fins in a state in which the fins 111 are rotated in the reverse direction of the circumferential direction by the rotation angle “−30 °” corresponding to the two concave portions 321 engaged with the two convex portions 312. The plate 110 is supported. Thereby, the direction of the fin 111 is fixed so that it may correspond with the flow direction of the cooling air with respect to the heat-emitting component 12. FIG.

  FIG. 13B is a diagram illustrating an example (No. 2) of a support mode of the finned plate in the third embodiment. In FIG. 13B, the arrows indicate the flow direction of the cooling air with respect to the heat generating component 12. In the example shown in FIG. 13B, the support plate 120 has two convex portions 312 of the finned plate 110 engaged with two concave portions 321 corresponding to the rotation angle “−45 °” among the plurality of concave portions 321. In this case, the support plate 120 has fins in a state where the fin 111 is rotated in the reverse direction of the circumferential direction by the rotation angle “−45 °” corresponding to the two concave portions 321 engaged with the two convex portions 312. The plate 110 is supported. Thereby, the direction of the fin 111 is fixed so that it may correspond with the flow direction of the cooling air with respect to the heat-emitting component 12. FIG.

  FIG. 13C is a diagram illustrating an example (No. 3) of a support mode of the finned plate in the third embodiment. In FIG. 13C, the arrows indicate the flow direction of the cooling air with respect to the heat generating component 12. In the example shown in FIG. 13C, the support plate 120 has two convex portions 312 of the finned plate 110 engaged with two concave portions 321 corresponding to the rotation angle “−60 °” among the plurality of concave portions 321. In this case, the support plate 120 has fins in a state where the fin 111 is rotated in the reverse direction of the circumferential direction by the rotation angle “−60 °” corresponding to the two concave portions 321 engaged with the two convex portions 312. The plate 110 is supported. Thereby, the direction of the fin 111 is fixed so that it may correspond with the flow direction of the cooling air with respect to the heat-emitting component 12. FIG.

  As described above, the plurality of concave portions 321 of the support plate 120 according to the third embodiment are arranged in an arc shape in association with a predetermined rotation angle along the circulation direction that circulates the orthogonal axis C. Further, at least two convex portions 312 of the finned plate 110 in the third embodiment are formed on the lower surface of the finned plate 110. Then, when the two convex portions 312 are engaged with the two concave portions 321 among the plurality of concave portions 321, the support plate 120 has only a rotation angle corresponding to the two concave portions 321 engaged with the two convex portions 312. The finned plate 110 is supported while the fins 111 are rotated in the circumferential direction. For this reason, the operator who performs the work of setting the direction of the fins of the heatsink wants the direction of the fins 111 while visually recognizing the rotation angle of the fins 111 by visually recognizing the concave portions 221 arranged in an arc shape. It can be fixed in the direction. As a result, the radiator 300 according to the third embodiment can further improve the workability when setting the direction of the fins of the radiator. Furthermore, the radiator 300 according to the third embodiment fixes the finned plate 110 by engaging the two convex portions 312 with the two concave portions 321 of the support plate 120. A wider contact surface can be secured, and the heat dissipation efficiency can be further improved.

(Other examples)
The embodiment of the radiator disclosed in the present application has been described. However, the radiator disclosed in the present application can be implemented in various different embodiments other than the above-described embodiments.

  That is, in the first to third embodiments, the example in which the convex portion is formed on the finned plate 110 and the concave portion that can be engaged with the convex portion is formed on the support plate 120 has been described. The vessel is not limited to this. For example, a concave portion may be formed on the support plate 120 and a convex portion may be formed on the finned plate 110.

DESCRIPTION OF SYMBOLS 10 Housing | casing 10a Air intake surface 11 Printed circuit board 12 Heat-generating component 13 Cooling device 100, 200, 300 Radiator 110 Finned plate 111 Fin 112, 212, 312 Convex part 120 Support plate 121, 221 and 321 Concave part C Orthogonal axis C1 Intersection

Claims (4)

A finned plate with a fin formed on one surface and a convex portion formed on the other surface;
A plurality of recesses that are attached to the heat generating component and arranged in association with a predetermined rotation angle along a circumferential direction that circulates an arbitrary axis orthogonal to the surface on a surface opposite to the surface that contacts the heat generating component. And when the convex portion is engaged with at least one of the plurality of concave portions, the fin is rotated in the circumferential direction by the rotation angle corresponding to the concave portion. And a support plate for supporting the attached plate. The plurality of recesses are arranged in association with a predetermined rotation angle along the circumferential direction, and extend radially around the intersection of the opposite surface of the support plate and the arbitrary axis,
The support plate is a state in which the fin is rotated in the circumferential direction by the rotation angle corresponding to the one concave portion when the convex portion is engaged with any one of the plurality of concave portions. The radiator according to claim 1, wherein the finned plate is supported. The plurality of recesses are disposed in association with a predetermined rotation angle along the circumferential direction, and extend radially from an intersection of the opposite surface of the support plate and the arbitrary axis. ,
The convex portion is disposed at a position offset from the position corresponding to the intersection point toward the outer edge of the finned plate, of the other surface of the finned plate,
The support plate is a state in which the fin is rotated in the circumferential direction by the rotation angle corresponding to the one concave portion when the convex portion is engaged with any one of the plurality of concave portions. The radiator according to claim 1, wherein the finned plate is supported. The plurality of recesses are arranged in an arc shape in association with a predetermined rotation angle along the circumferential direction,
Two or more convex portions are formed on the other surface of the finned plate,
The support plate rotates the fin in the circumferential direction by the rotation angle corresponding to the two concave portions when the convex portion is engaged with at least any two concave portions of the plurality of concave portions. The radiator according to claim 1, wherein the finned plate is supported in a state.

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