Cooling structure and electrical equipment

Abstract

The cooling structure (50) comprises: a main body (10) having a base (11), a heat sink (13) and a protrusion (13T) protruding from a heat dissipation surface (12); a cover member (20) configured to cover the protrusion (13T) and the heat sink (13) to form a flow path (18); and a fan mechanism (30) having a blade portion (31b), a drive portion (31a) for rotating the blade portion, and a wiring (31b) for supplying power to the drive portion. 1c), the protrusion (13T) has a first through hole (13h), the base (11) has a second through hole (11h) connected to the first through hole (13h), and the wiring (31c) has: a first part (31d) connected to the driving part and arranged between the cover member (20) and the main body (10); and a second part (31e) continuous with the first part (31d) and inserted into the first through hole (13h) and the second through hole (11h). The cooling structure can improve the heat dissipation performance and the sealing performance.

Description

Technical Field

[0001] This specification relates to a cooling structure and an electrical device. Background Art

[0002] As disclosed in Japanese Patent Publication No. 10-145079 (Patent Document 1), in an electrical device, various elements (heat sources) are housed in a housing. A cooling structure is provided on the housing for heat dissipation. The cooling structure disclosed in Patent Document 1 includes a fan mechanism. A fan cover is arranged to cover a fan motor, and a shielding member is arranged in a ring shape along the inner wall of the fan cover on the inner side of the fan cover. A wiring harness is connected to the fan motor.

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 10-145079

[0004] In the cooling structure disclosed in Patent Document 1, only the fan is provided as the main heat dissipation unit, and there is room for improvement in terms of improving heat dissipation performance. In addition, the wiring harness connected to the fan motor is generally configured as a whole in a state exposed inside the fan cover, and there is room for improvement in terms of improving shielding performance. Summary of the invention

[0005] The present specification aims to disclose a cooling structure having a structure capable of improving both heat dissipation performance and shielding performance, and an electric device having such a cooling structure.

[0006] The cooling structure according to the present disclosure comprises: a main body having a base portion formed with a heat dissipation surface, a plurality of heat dissipation fins protruding from the heat dissipation surface and extending in a height direction from a base end toward a terminal end on the side of the heat dissipation surface, and a protrusion formed by a conductive member and protruding from the heat dissipation surface in the height direction, so that heat received from a heat source is released through the heat dissipation surface and the plurality of the heat dissipation fins; a cover member having an air inlet and configured to cover the protrusion and the plurality of the heat dissipation fins from the terminal side and to form a flow path together with the heat dissipation surface and the plurality of the heat dissipation fins; and a fan mechanism that generates heat by being driven to rotate. The air inlet side becomes the upstream and the flow path side becomes the downstream of the air flow, at least a portion of the cover member configured to cover the protrusion has conductivity, the fan mechanism has a blade portion, a drive portion that rotates the blade portion, and a wiring for supplying power to the drive portion, the protrusion has a first through hole, the base portion has a second through hole connected to the first through hole, and the wiring has: a first portion, which is connected to the drive portion and is arranged between the cover member and the main body; and a second portion, which is continuous with the first portion and is inserted through the first through hole and the second through hole.

[0007] An electric device according to the present disclosure includes a housing and a heat source accommodated in the housing, and the housing is provided with the above-mentioned cooling structure according to the present disclosure.

[0008] According to the structure disclosed in this specification, it is possible to obtain a cooling structure having a structure capable of improving both heat dissipation performance and shielding performance, and an electric device having such a cooling structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a perspective view showing an electric device 100 including the cooling structure 50 according to the first embodiment.

[0010] Figure 2 This is a plan view showing main body 10 included in cooling structure 50 according to Embodiment 1.

[0011] Figure 3 It is a perspective view showing a cooling structure 50 according to the first embodiment in an exploded state.

[0012] Figure 4 It is along Figure 1 1 is a cross-sectional view taken along the arrow direction of line IV-IV in FIG. 1 , and shows the cross-sectional structure of cooling structure 50 according to Embodiment 1.

[0013] Figure 5 It is along Figure 1 2 is a cross-sectional view taken along the arrow direction of line VV in FIG. 1 , and shows another cross-sectional structure of the cooling structure 50 according to the first embodiment.

[0014] Figure 6 It is a plan view showing a main body 10A included in the cooling structure according to the second embodiment.

[0015] Figure 7 It is a plan view showing a main body 10B included in the cooling structure according to the third embodiment. DETAILED DESCRIPTION

[0016] Hereinafter, the embodiment of the invention will be described with reference to the drawings. In the following description, the same reference numerals are given to the same components and corresponding components, and the description thereof may not be repeated.

[0017] [Implementation Method 1]

[0018] (Electrical device 100)

[0019] Figure 1 1 is a perspective view showing an electric device 100 having a cooling structure 50. The electric device 100 has a housing 40 and a heat source 42 accommodated in the housing 40. The heat source 42 is composed of various elements and generates heat when driven. The cooling structure 50 is provided in the housing 40 for heat dissipation.

[0020] (Cooling structure 50)

[0021] Figure 2 It is a plan view showing the main body 10 included in the cooling structure 50 . Figure 3 It is a perspective view showing the cooling structure 50 in an exploded state. Figure 4 It is along Figure 1 A cross-sectional view in the direction of the arrow on line IV-IV, Figure 5 It is along Figure 1 A cross-sectional view in the direction of the arrow on the VV line in FIG. Figure 1 to Figure 5 (Mainly Figure 3 ), the cooling structure 50 includes a main body 10, a cover member 20 and a fan mechanism 30.

[0022] (Main body 10)

[0023] The main body 10 includes a flat base 11, a plurality of heat sinks 13 provided on the base 11, and a protrusion 13T provided on the base 11. The surface of the base 11 (the surface of the base 11 located at the end side in the thickness direction of the base 11) forms a heat dissipation surface 12 ( Figure 4 ).

[0024] The protrusion 13T has a side surface 13p and a side surface 13q on the opposite side to the side surface 13p. The protrusion 13T and the plurality of heat sinks 13 protrude from the heat sink surface 12, and they are all formed from a base end 13a ( Figure 3 ) toward the end 13b in the height direction H( Figure 3 ) is extended. The height direction H of the present disclosure may also be referred to as the thickness direction of the base portion 11. The base portion 11 is also provided with a relatively large portion extending in a roughly U-shape along the three sides of the base portion 11 when viewed from above. The U-shaped inner peripheral surface formed in this portion also forms the flow path 18 described later, so this portion can also function as the heat sink 13.

[0025] At least one of the plurality of heat sinks 13 (here, one heat sink 13 adjacent to the protruding portion 13T) has a recess 13d at the tip end. A first portion 31d ( Figure 3 , Figure 5 ).

[0026] The protrusion 13T is formed of a conductive member. The entire base portion 11 including the protrusion 13T may also be formed of a conductive member. The protrusion 13T of this embodiment forms a flow path 18. That is, the protrusion 13T of the present disclosure may also function as a heat sink. The protrusion 13T is formed with a first through hole 13h ( Figure 5 In the present embodiment, the protrusion 13T has a top surface 13m located at the end side and a step surface 13n ( Figure 3 , Figure 5 ). The first through hole 13h is provided to penetrate the step surface 13n. A second through hole 11h is formed in the base portion 11. The second through hole 11h extends along the height direction H and communicates with the first through hole 13h. The first through hole 13h and the second through hole 11h are arranged coaxially to form a through hole 10h ( Figure 5 ).

[0027] The heat dissipation surface 12 includes a flat area 12a without the protrusion 13T and the plurality of heat dissipation fins 13, and the protrusion 13T and the plurality of heat dissipation fins 13 are arranged to surround the flat area 12a from part or all of the four sides (see Figure 2 ). In addition, the "flat area 12a without the protrusion 13T and the plurality of heat sinks 13" mentioned here does not include the lower surface of the flow path divided by the plurality of heat sinks 13 extending in an elongated manner. When viewed from above, the flat area 12a has a larger surface area than the lower surface of the flow path divided by the plurality of heat sinks 13 (the surface formed by the heat sink surface 12), and has a larger surface area than the fan body 31 of the fan mechanism 30 described later.

[0028] The upper surface 14 ( Figure 3 ) forms a flat plane. Screw holes are respectively provided at the four corners of the upper surface 14. The upper surface 14 is the surface on the opposite side of the base portion 11 of the above-mentioned U-shaped portion (heat sink 13) erected along the outer periphery of the base portion 11. The upper surface 14 is the surface of the structural end 13b of the heat sink 13 extending in a direction intersecting the direction from the base end 13a toward the end 13b. It is not necessary to provide the screw holes of the upper surface 14 at the portion of the main body 10 that functions as a heat sink. The screw holes can be provided at any position of the main body 10, and the screw holes can also be provided at a portion that does not function as a heat sink.

[0029] The main body 10 further includes a protrusion 15 protruding from the heat dissipation surface 12 in the height direction H. Similar to the heat dissipation fin 13, the protrusion 15 protrudes from the heat dissipation surface 12 and extends from a base end 15s ( Figure 4) extends in the height direction H toward the terminal end 15t. The protrusion 15 is a portion to be fastened to the pedestal portion 32 described later. In the height direction H, the upper end surface 15a of the protrusion 15 (if described in detail, the surface of the protrusion 15 extending in the direction intersecting the direction from the base end 15s toward the terminal end 15t that constitutes the terminal end 15t) is set at a position one level lower than the position of the upper surface 14. The upper end surface 15a is provided with a screw hole 15b.

[0030] The heat source 42 ( Figure 1 ) is transferred to the base portion 11. The main body 10 releases the heat received from the heat source 42 via the base portion 11 through the heat dissipation surface 12, the protrusion 13T and the plurality of heat sinks 13. Alternatively, the main body 10 and the housing 40 may be made independently of each other, and the main body 10 may be mounted on the housing 40. Alternatively, the main body 10 may be formed integrally with the housing 40 in advance as one of the structural elements of the housing 40.

[0031] (Cover member 20)

[0032] The cover member 20 has a flat plate shape and is fastened to the main body 10. The cover member 20 is configured to cover the plurality of heat sinks 13 from the end 13b side, so that the cover member 20, the heat sink surface 12 and the plurality of heat sinks 13 together form a plurality of flow paths 18 ( Figure 1 Here, the cover member 20 is configured to cover the protrusion 13T from the end 13b side, thereby forming the flow path 18 on both sides of the protrusion 13T ( Figure 1 ). The side surfaces 13p and 13q of the protrusion 13T form the flow path 18 together with the cover member 20 and the heat dissipation surface 12. The protrusion 13T can also function as a heat sink. A portion 21t ( Figure 3 , Figure 5 The entire cover member 20 including the portion 21t may be formed of a member having conductivity.

[0033] Through holes are formed on the outer periphery of the cover member 20 (at the four corners). Fasteners are inserted through the through holes and screwed into the screw holes at the four corners of the main body 10. Thus, the cover member 20 is fastened to the main body 10 ( Figure 1 ). In addition, the number of 4 (four corners) here is an example, and it can be any number such as 3, 5, etc. The outer shape of the cover member 20 is not limited to a rectangular shape, and it can also be any shape such as a polygon, an ellipse, a circle, etc.

[0034] An air inlet 21H is formed through the substantially center of the cover member 20. Through holes 24a, 24b, and 25 are formed around the air inlet 21H in the cover member 20. Although the details will be described later, fasteners 28a, 28b, and 29 are inserted through the through holes 24a, 24b, and 25, respectively, and the base portion 32 of the fan mechanism 30 is fastened to the cover member 20 by the fasteners 28a, 28b, and 29.

[0035] (Fan mechanism 30)

[0036] The fan mechanism 30 includes a fan body 31 and a base 32, and is fastened to the cover member 20. The fan body 31 includes a blade portion 31b, a drive portion 31a for rotating the blade portion 31b, and a wiring 31c for supplying power to the drive portion 31a. The blade portion 31b is arranged to face the flat area 12a of the heat dissipation surface 12 when the cover member 20 is fastened to the main body 10 (see FIG. 2 ). Figure 3 In the height direction H ( Figure 4 ), the driving portion 31a and the blade portion 31b are arranged between the cover member 20 and the heat dissipation surface 12. The fan body 31 (blade portion 31b) is surrounded by the protrusion 13T and the plurality of heat dissipation fins 13 from all sides.

[0037] The wiring 31c is composed of, for example, a flat cable having a strip shape. The technical concept of the flat cable also includes FPC (Flexible Printed Circuits) and wiring members formed (shaped) in a strip shape. The wiring 31c has a first portion 31d and a second portion 31e. The first portion 31d is connected to the drive portion 31a, and the first portion 31d extends radially outward from the drive portion 31a and is arranged between the cover member 20 and the main body 10 ( Figure 3 , Figure 5 ). Here, the first portion 31d is configured to pass between the cover member 20 and the step surface 13n. The first portion 31d is further configured to pass between the cover member 20 and the recessed portion 13d. The second portion 31e is continuous with the first portion 31d and is inserted through the first through hole 13h and the second through hole 11h. The end of the second portion 31e on the opposite side to the first portion 31d is connected to a control device (not shown) inside the housing 40.

[0038] The blade portion 31b is driven to rotate, thereby generating the air inlet 21H ( Figure 1 ) This side becomes the upstream and the flow path 18 ( Figure 1 The fan body 31 can be composed of a centrifugal fan (e.g., a multi-blade fan, a turbo fan) that inhales air through the air inlet 21H along the direction of the rotation axis of the blade portion 31b and efficiently ejects air toward the outer side in the rotation radial direction (the side where the plurality of heat sinks 13 are arranged).

[0039] The base portion 32 is formed of a thin plate-like member, holds the fan body 31, and the base portion 32 mounts the fan body 31 on the cover member 20. The base portion 32 includes an annular outer peripheral portion 33a, a central portion 33b arranged inside the outer peripheral portion 33a, and three connecting portions 33c. The three connecting portions 33c extend radially from the central portion 33b in a radial direction, connecting the central portion 33b to the outer peripheral portion 33a. In addition, the number 3 here is an example, and it can also be any number such as 2 or 4. The driving portion 31a of the fan body 31 is fastened to the central portion 33b.

[0040] Screw holes 34a, 34b and a through hole 35 are formed in the outer peripheral portion 33a of the seat portion 32. Fasteners 28a, 28b are respectively inserted through the through holes 24a, 24b of the cover member 20, and are screwed into the screw holes 34a, 34b of the seat portion 32. Fastener 29 is inserted through the through hole 25 of the cover member 20 and the through hole 35 of the seat portion 32, and is screwed into the screw hole 15b of the main body portion 10 (protrusion 15). The seat portion 32 is fastened to the cover member 20 by the fasteners 28a, 28b. The seat portion 32 is also fastened to the protrusion 15 of the main body portion 10 by the fastener 29. The fastener 29 fastens both the cover member 20 and the seat portion 32 to the protrusion 15. The seat portion 32 is sandwiched between the cover member 20 and the upper end surface 15a of the protrusion 15.

[0041] (Function and Effect)

[0042] like Figure 5 As shown, a conductive protrusion 13T is provided protruding from the base portion 11 (heat dissipation surface 12), and a first through hole 13h of the protrusion 13T and a second through hole 11h of the base portion 11 form a through hole 10h ( Figure 5 ). The first portion 31d of the wiring 31c is arranged between the cover member 20 and the main body 10, and the second portion 31e of the wiring 31c is inserted into the through hole 10h (the first through hole 13h and the second through hole 11h). At least the portion 21t of the cover member 20 arranged to cover the protrusion 13T has conductivity.

[0043] In the case of patent document 1 (Japanese Patent Publication No. 10-145079), the wiring harness connected to the fan motor is arranged in a state of being exposed on the inner side of the fan cover. Unlike the structure of such patent document 1, in the structure of the above-mentioned embodiment 1, most of the wiring 31c connected to the drive part 31a is surrounded by a conductive member, which can achieve improved shielding performance. In order to obtain a better shielding effect, it is better that the top surface 13m of the protrusion 13T is in contact with the part 21t of the cover member 20. The conductive member used for shielding is not limited to a metal member, and it can also be a resin member with metal particles dispersed inside.

[0044] In the cooling structure 50, the heat source 42 ( Figure 1 ) is transferred to the base portion 11. The heat is released through the heat dissipation surface 12, the protrusion 13T and the plurality of heat sinks 13. The heat dissipation is promoted by the fan mechanism 30. Due to the presence of the protrusion 13T and the plurality of heat sinks 13, it is possible to achieve a higher heat dissipation performance than the case of Patent Document 1 (Japanese Patent Laid-Open No. 10-145079). The side surfaces 13p and 13q of the protrusion 13T also form a flow path 18, and the protrusion 13T can also function as a heat sink, so that a higher heat dissipation effect can be achieved.

[0045] In forming the flow path 18 ( Figure 1 ) is fastened to the cover member 20. On the other hand, there is also a case where the fan mechanism 30 is fastened to the main body 10, for example. In such a case, the fan body 31 is stably held by the main body 10, so even if the fan body 31 is driven to rotate, its influence is hardly transmitted to the cover member 20, and noise caused by vibration of the cover member 20 is hardly generated. On the other hand, in the case where the fan mechanism 30 is fastened to the cover member 20, the cover member 20 is easily vibrated by the rotation of the blade portion 31b, and noise caused by vibration of the cover member 20 is easily generated.

[0046] As described above, in the cooling structure 50 of the first embodiment, the base portion 32 of the fan body 31 is fastened to the main body 10 (protrusion 15) by the fastener 29. The fastening parts provided at the four corners of the cover member 20 form fixed ends, and the portion of the base portion 32 connected to the protrusion 15 also forms fixed ends. The fan mechanism 30 is held in a form close to the support at both ends, so that even when the blade portion 31b is driven to rotate, the cover member 20 is not easy to vibrate, and the noise caused by the vibration of the cover member 20 is effectively suppressed.

[0047] As described above, in the cooling structure 50, the blade portion 31b of the fan body 31 is arranged to face the flat area 12a in the heat dissipation surface 12. It is not necessary to form the flat area 12a on the base portion 11 (heat dissipation surface 12), but by adopting this structure, the air from the fan body 31 can contact the flat area 12a and move radially, and flow into the flow path 18 efficiently.

[0048] As described above, in the cooling structure 50, the step surface 13n is formed on the protrusion 13T, and the first part 31d of the wiring 31c is configured to pass between the cover member 20 and the step surface 13n. More parts of the surface of the first part 31d are surrounded by the protrusion 13T, which can achieve a higher shielding effect. In addition, the wiring 31c can be arranged in a narrow gap between the cover member 20 and the protrusion 13T (step surface 13n), which can achieve the cooling structure 50. Thinning and miniaturization. This is also the same for the recess 13d formed in the heat sink 13. The wiring 31c is configured to pass on the step surface 13n and in the recess 13d along the cover member 20, so that the flow of air in the flow path 18 is effectively suppressed by the existence of the wiring 31c. The wiring 31c is configured to pass on the step surface 13n and in the recess 13d, so that the position deviation of the wiring 31c can also be suppressed.

[0049] In addition, as described above, in the cooling structure 50, the blade portion 31b and the driving portion 31a of the fan body 31 are arranged between the cover member 20 and the heat dissipation surface 12 in the height direction. This structure is not essential, but by adopting this structure, a plurality of heat sinks 13 can be arranged to surround the fan body 31 (blade portion 31b and driving portion 31a) from all sides, and the cooling structure 50 can be made thinner and smaller. The wiring 31c is composed of a flat cable having a belt-like shape, so that the wiring 31c can be arranged in a narrow gap between the cover member 20 and the heat dissipation surface 12, and the cooling structure 50 can be made thinner and smaller.

[0050] As described above, in the cooling structure 50, the protrusion 15 is provided on the main body 10, and the base 32 of the fan body 31 is fastened to the protrusion 15 by the fastener 29. It is not necessary to provide the protrusion 15 on the main body 10, but due to the presence of the protrusion 15, it is easy and simple to realize a structure in which the base 32 is fastened to the main body 10 side, that is, a structure in which the base 32 is sandwiched by the cover member 20 and the upper end surface 15a of the protrusion 15 to form a fixed end.

[0051] As a fastening portion for fastening the pedestal portion 32 to the main body portion 10 side, a structure in which a bracket or the like is suspended from the pedestal portion 32 and the bracket is connected to any part of the base portion 11 and the heat dissipation surface 12 may be adopted. With this structure, the portion of the pedestal portion 32 connected to the protrusion 15 forms a fixed end, and the generation of noise or the like caused by the vibration of the cover member 20 is effectively suppressed. As described above, in the cooling structure 50, the fastener 29 fastens both the cover member 20 and the pedestal portion 32 to the protrusion 15. Both the structure in which the cover member 20 is fastened to the protrusion 15 and the structure in which the pedestal portion 32 is fastened to the protrusion 15 can be realized by one fastener 29.

[0052] The base portion 32 of the fan body 31 is fastened to the main body 10 by the fastener 29 (fastener 28a). As a fastening portion for fastening the base portion 32 to the main body 10 side, it can be implemented by bolt fastening, it can also be implemented by fastening formed by an adhesive or welding, it can also be implemented by a riveting structure, etc. That is, the part of the cover member that is fastened to the main body becomes the fastening portion. However, as a fastening portion, it is not necessary to use such a structure as a fastener 29. For example, the base portion 32 of the fan body 31 can also be incorporated into the cooling structure in a form that receives a force relative to the base portion 32 from the main body 10.

[0053] The height of the protrusion 15 is increased. According to this structure, even if the fastener 28a ( Figure 6 ), the base portion 32 is also sandwiched by the cover member 20 and the upper end surface 15a of the protrusion 15, and the fan mechanism 30 is held in a form close to the support at both ends. Therefore, even when the blade portion 31b is driven to rotate, the cover member 20 is not easy to vibrate, and the noise caused by the vibration of the cover member 20 is effectively suppressed. Corresponding to not using the fastener 28a, the number of parts can be reduced.

[0054] [Implementation Method 2]

[0055] Figure 6 1 is a top view showing the main body 10A included in the cooling structure in Embodiment 2. Noise from the wiring 31c is easily radiated to the outside from the outlet portion 13e of the flow path 18. Therefore, in order to further improve the shielding performance, it is preferable to bend the heat sink 13 and the protrusion 13T so that the wiring 31c is not easily visible from the outlet portion 13e or cannot be visible from the outlet portion 13e.

[0056] use Figure 6In this case, for example, even if one attempts to observe the wiring 31c from the exit portion 13e in the direction of the arrow DR1, the wiring 31c is blocked by the presence of the heat sink 13 and the protrusion 13T, and the wiring 31c cannot be substantially recognized. By adopting such a structure with a shielding effect, a higher shielding performance can be obtained.

[0057] [Implementation method 3]

[0058] Figure 7 1 is a top view showing a main body 10B included in a cooling structure according to Embodiment 3. Figure 2 ), the protrusion 13T functions as a heat sink. On the other hand, in the main body 10B of the third embodiment, Figure 7 The protrusion 13T as shown.

[0059] The protrusion 13T protrudes from the base 11 (heat dissipation surface 12) in the height direction H, which is common to the first and third embodiments. The side surface 13p of the protrusion 13T forms the flow path 18, but the protrusion 13T does not have a fin shape. The top surface 13m of the protrusion 13T is formed by the upper surface 14 of the main body 10. Even when this structure is adopted, the same action and effect as the first embodiment described above can be obtained.

[0060] Although the embodiments have been described above, the above disclosure is illustrative in all aspects and is not restrictive. The technical scope of the present invention is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0061] Description of Reference Numerals

[0062] 10, 10A, 10B...main body; 10h, 24a, 24b, 25, 35...through hole; 11...base; 11h...second through hole; 12...heat dissipation surface; 12a...flat area; 13...heat sink; 13T...protrusion; 13a, 15s...base end; 13b, 15t...end; 13d...recess; 13e...exit portion; 13h...first through hole; 13m...top surface; 13n...step surface; 13p, 13q...side surface; 14...upper surface; 15...protrusion; 15a...upper end surface; 15b, 34a, 34b ...screw hole; 18...flow path; 20...cover member; 21H...air inlet; 21t...part; 28a, 28b, 29...fastener; 30...fan mechanism; 31...fan body; 31a...driving part; 31b...blade part; 31c...wiring; 31d...first part; 31e...second part; 32...base part; 33a...peripheral part; 33b...central part; 33c...connecting part; 40...housing; 42...heat source; 50...cooling structure; 100...electrical device; AR, DR1...arrow; H...height direction.

Claims

1. A cooling structure, characterized in that: have: A main body having a base portion formed with a heat dissipation surface, a plurality of heat dissipation fins protruding from the heat dissipation surface and extending in a height direction from a base end toward a tip end on the heat dissipation surface side, and a protrusion formed of a conductive member and protruding from the heat dissipation surface in the height direction, and allowing heat received from a heat source to be released through the heat dissipation surface and the plurality of heat dissipation fins; a cover member having an air introduction port, configured to cover the protrusion and the plurality of radiating fins from the distal end side, and to form a flow path together with the radiating surface and the plurality of radiating fins; and The fan mechanism is driven to rotate to generate an airflow with the air inlet side being upstream and the flow path side being downstream, At least a portion of the cover member that is arranged to cover the protrusion has conductivity, The fan mechanism includes a blade portion, a driving portion for rotating the blade portion, and wiring for supplying electric power to the driving portion. The protrusion has a first through hole, The base portion has a second through hole communicating with the first through hole, The wiring includes a first portion connected to the driving portion and disposed between the cover member and the main body portion, and a second portion continuous with the first portion and inserted through the first through hole and the second through hole.

2. The cooling structure according to claim 1, characterized in that: The protrusion has: a top surface located on the tip side; and a step surface provided at a height position lower than the top surface in the height direction, The first through hole is configured to penetrate the step surface. The first portion of the wiring is arranged to pass between the cover member and the step surface.

3. The cooling structure according to claim 1 or 2, characterized in that: At least one of the plurality of heat sinks has a recessed portion on the tip side. The first portion of the wiring is arranged to pass between the cover member and the recessed portion.

4. The cooling structure according to any one of claims 1 to 3, characterized in that: The side surface of the protrusion forms the flow path together with the cover member and the heat dissipation surface.

5. The cooling structure according to any one of claims 1 to 4, characterized in that: The heat dissipation surface includes a flat area where the protrusion and the plurality of heat dissipation fins are not provided. The plurality of heat sinks are configured to surround the flat area partially or entirely from all sides, The blade portion is arranged to face the flat region.

6. The cooling structure according to any one of claims 1 to 5, characterized in that: In the height direction, the blade portion and the driving portion are arranged between the cover member and the heat dissipation surface.

7. The cooling structure according to any one of claims 1 to 6, characterized in that: The wiring is composed of a flat cable having a ribbon shape.

8. An electrical device, characterized in that: have: a housing; and a heat source, which is contained in the housing, The cooling structure according to any one of claims 1 to 7 is provided in the housing.

Images