JP6817393B1 - Electronics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic device capable of improving cooling efficiency and miniaturization even when cooling a plurality of heat sources. An electronic device includes a first heat source, a second heat source, a first duct for introducing external air, a second duct connected to the first duct, and a blower. In the blower, the housing of the blower has a first surface and a second surface, the first surface has a first intake port, and the second surface has a second intake port. However, the first duct is provided in the region between the first heat source and the second heat source and leads to the first intake port, and the second duct leads to the second intake port. [Selection diagram] Fig. 4

Description

The present disclosure relates to electronic devices.

An electronic device having a plurality of ducts corresponding to a plurality of heat sources is known (see, for example, Patent Document 1). This electronic device is arranged between the first heat source and the second heat source, and is arranged at a position where the first duct that dissipates the heat of the first heat source to the outside and the first heat source are sandwiched between the first duct. A second duct that dissipates the heat of the second heat source to the outside is provided. Further, the electronic device is arranged between the third heat source and the third heat source and the second duct arranged at a position where the second duct is sandwiched between the first heat source and the heat of the third heat source to the outside. It is provided with a third duct that dissipates heat. A blower for taking in outside air is provided between the second duct and the third duct. The outside air passes through the first duct and the second duct and flows into the first suction part of the blower. Further, the outside air passes through the third duct and flows into the second suction portion of the blower. The blower is used as double-sided intake air that is taken in from the first suction unit and the second suction unit provided on both sides in the direction along the fan rotation axis.

JP-A-2018-164250

In the above-mentioned electronic device, heat generated by a plurality of heat sources is divided by a plurality of duct units to cool each heat source. Therefore, the size of the device is increased by the amount of overlapping independent ducts. Further, since the air obtained by cooling one heat source is exhausted to the outside, the cooling efficiency of the heat source is not very high. That is, the outside air still having a cooling capacity is exhausted, which is inefficient. In addition, this increases the energy for transporting the outside air, which may require a large blower, which also increases the size of the device.

In one aspect, the electronic device comprises a first heat source, a second heat source, a first duct for introducing external air, a second duct connected to the first duct, and a blower. .. In the blower, the housing of the blower has a first surface and a second surface. The first surface has a first air intake. The second surface has a second air intake. The first duct is provided in the region between the first heat source and the second heat source and leads to the first intake port. The second duct leads to the second intake port.

The air flowing through the first duct may flow into the connecting portion where the first duct and the second duct are connected and the first intake port. The air that has flowed to the second duct through the connecting portion may flow into the second intake port.

The electronic device may further include a heat guide plate, which is in thermal contact with the second heat source. The heat guide plate may be exposed on the inner wall surface of the second duct.

The air flow direction in the first duct and the air exhaust direction by the blower may be different directions.

The electronic device may further include a heat radiating plate that is in thermal contact with the first heat source. The heat radiating plate may be exposed on the inner wall surface of the first duct.

The heat radiating plate may have a plurality of fins separated by a predetermined pitch. The distance between the tip of the fin and the first surface may be longer than the pitch of the fin.

The first duct may be formed with a rectangular cross section in the direction perpendicular to the air flow. A connecting portion in which the first duct and the second duct are connected may be arranged at one end of the rectangular shape in the longitudinal direction.

The first heat source may be an image sensor.

The second heat source may be an IC.

The electronic device may be mounted on the gimbal.

The outline of the above invention does not list all the features of the present disclosure. Sub-combinations of these feature groups can also be inventions.

A perspective view of the electronic device according to the embodiment of the present disclosure as viewed from the front side. Front view of the electronic device shown in FIG. A perspective view of the electronic device shown in FIG. 1 as viewed from the rear side. AA sectional view of FIG. BB sectional view of FIG. Perspective view of the electronic device with the back cover removed as shown in FIG. A perspective view of the back cover shown in FIG. 3 as viewed from the front side.

Hereinafter, the present disclosure will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. Not all combinations of features described in the embodiments are essential to the solution of the invention.

The claims, specifications, drawings, and abstracts include matters that are subject to copyright protection. The copyright holder will not object to any person's reproduction of these documents as long as they appear in the Patent Office files or records. However, in other cases, all copyrights are reserved.

FIG. 1 is a perspective view of the electronic device according to the embodiment of the present disclosure as viewed from the front side. In the present specification, the directions of up, down, front, back, left, and right shall follow the directions of the arrows shown in FIG.
The electronic device according to this embodiment is an interchangeable lens type camera module 11. The electronic device is not limited to this, and may be another imaging device such as a digital video camera.

The camera module 11 has a device housing 13. The device housing 13 includes a front cover 15 and a back cover 17 (FIG. 3). The device housing 13 includes an image sensor 19 (FIG. 4) inside. In the present embodiment, the image sensor 19 is the first heat source. The camera module 11 includes a mount 21 for connecting to a lens unit and a mount adapter on the front surface of the front cover 15. The mount 21 is provided with a plurality of electrical contacts 23. The electrical contact 23 communicates with the lens unit and the mount adapter.

The mount 21 includes a fixing mechanism 25 for fixing the lens unit and the mount adapter. The fixing mechanism 25 can fix the lens unit and the mount adapter by rotating the knob 27 clockwise.

FIG. 2 is a front view of the electronic device shown in FIG.
The image sensor 19 is arranged inside the mount 21 of the device housing 13. The image pickup light from the lens unit coupled to the mount 21 is incident on the light receiving surface of the image pickup sensor 19. On the back side of the image sensor 19, a first duct 29 (FIG. 4), a printed circuit board 31 (FIG. 6), an IC33 (Integrated Circuit) (FIG. 4), a second duct 35 (FIG. 5), and a blower 37 (Fig. 6) and the like are arranged. In this embodiment, the IC 33 serves as a second heat source.

FIG. 3 is a perspective view of the electronic device shown in FIG. 1 as viewed from the rear side.
On the back surface of the camera module 11, an intake port 39 for taking in outside air is provided on the upper side. An exhaust port 41 for exhausting the outside air taken in from the intake port 39 is provided on the lower side of the back surface of the camera module 11. The camera module 11 takes in outside air from the intake port 39 by driving a blower 37 provided inside, and cools the image sensor 19 and IC 33 to use the heat exchanged outside air as exhaust from the exhaust port 41. Discharge to the outside.

FIG. 4 is a cross-sectional view taken along the line AA of FIG. FIG. 5 is a cross-sectional view taken along the line BB of FIG.
As shown in FIG. 4, the camera module 11 includes an image sensor 19, an IC 33, a first duct 29 that introduces external air from an intake port 39, and a second duct 35 that is connected to the first duct 29. And a blower 37.

The blower 37 has a blower housing. The blower housing has a plate front surface 43 (an example of a first surface) and a plate back surface 45 (an example of a second surface). The plate front surface 43 has a first intake port 47. The back surface 45 of the plate has a second intake port 49 (FIG. 5). The first duct 29 is provided in the area between the image sensor 19 and the IC 33.

Inside the intake port 39, an outside air introduction portion in which the air flow path is gradually narrowed is arranged. The downstream end of the outside air introduction portion is connected to the first duct 29 (FIG. 4). The first duct 29 leads to the first intake port 47 of the blower 37. The second duct 35 leads to the second intake port 49 of the blower 37.

The air flowing through the first duct 29 flows into the connecting portion 51 (FIG. 5) to which the second duct 35 is connected and the first intake port 47 (FIG. 4) of the blower 37. The lower part of the first duct 29 is closed. The air that has flowed to the second duct 35 through the connecting portion 51 flows into the second intake port 49 of the blower 37.

The upper end of the first duct 29 is connected to the intake port 39. The first duct 29 includes a heat radiating plate 53 that makes thermal contact with the image sensor 19. The heat radiating plate 53 is exposed toward the flow path on the inner wall surface on the front side of the first duct 29.

A plurality of fins 55 (FIG. 5) separated from each other at a predetermined pitch P in the left-right direction are formed on the heat radiating plate 53 so as to extend in the vertical direction. The air flowing in from the upper intake port 39 flows downward while exchanging heat between the fins 55. The air flowing downward is sucked into the blower 37 from the first intake port 47 that opens in the plate front surface 43 of the blower 37 facing the fin 55.

The first duct 29 is formed so that the distance D between the tip end (rear end) of the fin 55 and the plate front surface 43 is longer than the pitch P of the fin 55.

As shown in FIG. 5, the first duct 29 forms a rectangular flow path that is longer in the left-right direction than in the front-rear direction at the back of the image sensor 19. A heat radiating plate 53 in which a plurality of fins 55 are arranged in the left-right direction is exposed on the image sensor 19 side across the flow path. On the other hand, the first duct partition wall plate 57 is provided on the opposite side of the heat radiating plate 53 across the flow path of the first duct 29. A blower 37 is arranged below the first duct partition plate 57. In the blower 37, the front surface 43 of the plate is exposed in the flow path of the first duct 29. The first intake port 47 of the blower 37 opens on the front surface 43 of the plate.

In the flow path of the first duct 29, the connecting portion 51 is arranged at the lower right end.

That is, the first duct 29 has a rectangular cross section in the direction perpendicular to the air flow. The connecting portion 51 is arranged at the right end of one of the rectangular shapes in the longitudinal direction. The connecting portion 51 crosses the right end of the blower 37 rearward and connects to a second duct 35 formed on the back of the blower 37. The back surface 45 of the plate of the blower 37 is exposed in the second duct 35. The second intake port 49 is opened on the back surface 45 of the plate.

That is, the air that has flowed into the second duct 35 from the connecting portion 51 is sucked into the blower 37 from the second intake port 49. The air sucked into the blower 37 is exhausted to the outside from the exhaust port 41 provided on the left side of the blower 37.

Therefore, in the camera module 11, the air flow direction (vertical direction) in the first duct 29 and the air exhaust direction (horizontal direction) by the blower 37 are different directions.

FIG. 6 is a perspective view of the electronic device from which the back cover 17 shown in FIG. 3 has been removed.
The printed circuit board 31 is fixed to the front cover 15 by a plurality of fixing columns 59 by fixing screws. An IC 33 (for example, FPGA: Field-Programmable Gate Array) is mounted on the back surface of the printed circuit board 31. On the back surface of the IC 33, a vertically long rectangular heat guide plate 61 is attached in thermal contact with the IC 33. The IC 33 and the heat conductive plate 61 are closely fixed to each other via, for example, a heat conductive material or a heat conductive sheet. For the heat conductive plate 61, for example, a copper plate or an aluminum plate having a high thermal conductivity is used.

A blower 37 is arranged below the heat guide plate 61 by cutting out a part of the heat guide plate 61. As the blower 37, for example, a sirocco fan in which the rotation center axis of the fan (not shown) is in the front-rear direction is used. In the blower 37, the second intake port 49 opens in the central portion of the disc-shaped back plate 63 arranged concentrically with the rotation center axis. In the camera module 11, the plate back surface 45 through which the second intake port 49 opens is also referred to as a second surface.

The blower 37 has a disc-shaped front plate 65 (FIG. 4) arranged concentrically with the rotation center axis on the opposite side of the second intake port 49 with the fan interposed therebetween. In the blower 37, the first intake port 47 opens in the central portion of the front plate 65. In the camera module 11, the plate front surface 43 through which the first intake port 47 opens is also referred to as a first surface.

A second duct peripheral wall 67 is formed on the outer periphery of the blower 37 so as to surround the back plate 63. In the second duct peripheral wall 67, a quadrangular short duct wall 69 projecting to the right is continuously formed at the lower portion. The second duct peripheral wall 67 and the short duct wall 69 form a part of the second duct 35. The lower end of the heat conductive plate 61 is arranged so as to extend inside the second duct 35. The lower portion of the extended heat guide plate 61 is surrounded inside the short duct wall 69.

That is, in the second duct 35, the heat guide plate 61 that is in thermal contact with the IC 33 is exposed on the inner wall surface.

FIG. 7 is a perspective view of the back cover 17 shown in FIG. 3 as viewed from the front side.
An annular rib 71 forming a part of the second duct 35 is projected from the front surface of the back cover 17 (the surface inside the device housing 13 at the time of assembly). The rib 71 is formed so as to fit with the continuous second duct peripheral wall 67 and the short duct wall 69. That is, the second duct 35 is formed by attaching the back cover 17 to the front cover 15 and fitting the rib 71 to the second duct peripheral wall 67 and the short duct wall 69 to seal the second duct 35.

On the left side of the blower 37 shown in FIG. 6, an air outlet 73 of a vertically long blower 37 is formed. The air outlet 73 is arranged close to the inside of the exhaust port 41 by attaching the back cover 17 to the front cover 15. As a result, the blower 37 exhausts the air blown out from the outlet 73 to the outside through the exhaust port 41.

The camera module 11 having the above configuration is used, for example, by being mounted on a gimbal. The gimbal has a mounting base for electrically rotating the camera module 11 about a 2-axis or 3-axis axis with respect to the grip portion. As a result, for example, it is possible to suppress camera shake when the camera module 11 to which a heavy telephoto lens unit is combined is hand-held for moving image shooting.

Next, the operation of the above configuration will be described.

The camera module 11 according to the present embodiment includes a first heat source, a second heat source, a first duct 29 for introducing outside air, a second duct 35 connected to the first duct 29, and the like. It is provided with a blower 37. In the blower 37, the housing of the blower 37 has a first surface and a second surface. The first surface has a first intake port 47. The second surface has a second intake port 49. The first duct 29 is provided in the region between the first heat source and the second heat source, and leads to the first intake port 47. The second duct 35 leads to the second intake port 49.

As a result, the camera module 11 can cool the first heat source with the air in the first duct 29. Further, the camera module 11 can introduce the air of the first duct 29 into the second duct 35, and thus can reuse the air that has cooled the first heat source to cool the second heat source. Therefore, since it is not necessary to directly introduce the external air into the second duct 35, the size of the second duct 35 can be reduced. As a result, it contributes to the miniaturization of the entire camera module 11. Further, in the camera module 11, air can be taken into the blower 37 from the first surface and the second surface (both sides). As a result, the camera module 11 can increase the area of the intake port, suppress the intake resistance, and stabilize the inflow air (reduce the transfer energy loss due to the generation of turbulence). As a result, the camera module 11 can improve the utilization (air transport) efficiency of the blower 37.

In the camera module 11, the air flowing through the first duct 29 flows into the connecting portion 51 in which the first duct 29 and the second duct 35 are connected and the first intake port 47. The air that has flowed to the second duct 35 through the connecting portion 51 flows into the second intake port 49.

In the camera module 11, the air that has flowed into the first duct 29 from the intake port 39 passes through the first heat source and is then sucked into the blower 37 from the first intake port 47 located on the downstream side. The air in the first duct 29 sucked into the blower 37 is exhausted to the outside from the exhaust port 41 that opens in the equipment housing 13.

In addition to this, the first duct 29 is provided with a connecting portion 51. The connecting portion 51 leads to the second duct 35. The air that has flowed from the first duct 29 to the second duct 35 through the connecting portion 51 is sucked into the blower 37 from the second intake port 49 located on the downstream side after passing in contact with the heat guide plate 61. .. The air in the second duct 35 sucked into the blower 37 merges with the air sucked from the first duct 29 and is exhausted to the outside from the exhaust port 41 that opens to the equipment housing 13.

The camera module 11 may include a heat guide plate 61 that is in thermal contact with the second heat source. The heat guide plate 61 may be exposed on the inner wall surface of the second duct 35.

In the camera module 11, the heat guide plate 61 is provided in thermal contact with the IC 33. The heat guide plate 61 is formed in a rectangular shape, for example, and the IC 33 is in thermal contact with the upper end in the longitudinal direction. The lower end of the heat guide plate 61 in the longitudinal direction is exposed on the inner wall surface of the second duct 35. In the second duct 35, the connecting portion 51 is located on one side and the second intake port 49 is located on the other side of the exposed heat guide plate 61. Therefore, the air flowing into the second duct 35 from the connecting portion 51 flows while cooling the heat guide plate 61, and then is sucked into the blower 37 from the second intake port 49. The IC 33, which is in thermal contact with the heat guide plate 61, is cooled by cooling the lower end of the heat guide plate 61.

In the camera module 11, even if the second duct 35 and the IC 33 are arranged slightly apart from each other, the IC 33 can be cooled by the heat conduction of the heat guide plate 61. Further, since the IC 33 and the second duct 35 can be separated from each other, the degree of freedom in the positional relationship between the IC 33 and the second duct 35 within the limited space can be increased. For example, the heat guide plate 61 is exposed as an inner wall surface on the front side of the second duct 35. Further, in addition to the heat conductive plate 61, a part of the plate back surface 45, the second duct peripheral wall 67, the short duct wall 69, the rib 71, the back cover 17, and the like can also be the inner wall surface of the second duct 35.

In the camera module 11, the air flow direction in the first duct 29 and the air exhaust direction by the blower 37 may be different directions.

In the camera module 11, exhaust is performed in a direction different from the air flow direction of the first duct 29 whose starting end is the intake port 39. Inspiration has a relatively small effect on the user. On the other hand, the exhaust can be uncomfortable when sprayed on the user. Further, it is assumed that the device housing 13 is supported downward (for example, supported by installing it on a gimbal). Therefore, the exhaust direction is relatively preferably the left-right direction excluding the front-back and up-down directions. In this case, by setting the air flow direction in the first duct 29 to the vertical direction, the exhaust direction can be directed to either the left-right direction. Thereby, for example, the camera module 11 can be prevented from being exhausted straight downward and exhausted toward the user's handle.

Further, the fact that the air flow direction and the exhaust direction in the first duct 29 are different means that the air transport efficiency is unlikely to decrease even in a narrow space, and the application of a sirocco fan in which the suction direction and the exhaust direction are substantially orthogonal to each other. It will also be convenient.

The camera module 11 may include a heat radiating plate 53 that makes thermal contact with the first heat source. The heat radiating plate 53 may be exposed on the inner wall surface of the first duct 29.

In the camera module 11, the heat of the first heat source is transferred to the heat radiating plate 53 that is in thermal contact. The heat transferred to the heat radiating plate 53 is transferred to the entire heat radiating plate 53 by heat conduction. The heat radiating plate 53 is exposed on the inner wall surface of the first duct 29. The heat of the heat radiating plate 53 is transferred to the low temperature air flowing through the first duct 29 by heat transfer. The heat radiating plate 53 that dissipates heat to the air is cooled. As a result, the image sensor 19 is cooled via the heat radiating plate 53. In the first duct 29, for example, the heat radiating plate 53 is exposed on the front inner wall surface of the pair of inner wall surfaces facing each other in the front-rear direction. On the other hand, in the first duct 29, for example, the upper portion of the inner wall surface on the rear side is the first duct partition wall plate 57, and the lower portion is the front plate 65 of the blower 37.

In the camera module 11, the heat radiating plate 53 may have a plurality of fins 55 separated by a predetermined pitch P. The distance D between the tip of the fin 55 and the first surface may be longer than the pitch P of the fin 55.

In the camera module 11, the first duct 29 extends in the vertical direction. The upper end of the first duct 29 is connected to the intake port 39, and the lower end is connected to the first intake port 47 of the blower 37. That is, the air passing through the first duct 29 flows from top to bottom. The cross-sectional shape of the first duct 29 orthogonal to the extending direction is a rectangular shape that is longer in the left-right direction than in the front-rear direction. In other words, a thin flow path is formed in the front-rear direction. As a result, the thickness of the device housing 13 in the front-rear direction is suppressed.

A plurality of fins 55 separated from each other at a predetermined pitch P in the left-right direction are formed on the heat radiating plate 53 so as to extend in the up-down direction. Between these fins 55, the air flowing in from the upper intake port 39 flows downward while exchanging heat.

Here, the distance D between the tip of the fin 55 and the first surface is set longer than the pitch P of the fin 55. An outer fin flow path that crosses the heat radiating plate 53 in the left-right direction is formed between the tip of the fin 55 and the first surface. This fin outer flow path becomes a part of the flow path of the first duct 29. Since the outer flow path of the fins is formed in the first duct 29, the air flow across the heat radiating plate 53 in the left-right direction is facilitated. Therefore, the air easily wraps around to the second duct via the connecting portion 51.

In the camera module 11, the first duct 29 may have a rectangular cross section in the direction perpendicular to the air flow. The articulating portion 51 may be arranged at one end of the rectangular shape in the longitudinal direction.

In the camera module 11, the first duct 29 has a vertically long connecting portion 51 opened on the inner wall surface (first duct partition wall plate 57) on the rear side facing the heat radiating plate 53. The connecting portion 51 opens at the right end in the left-right direction of the first duct partition wall plate 57. The heat from the image sensor 19 is transferred to the heat radiating plate 53 in the radial direction from the central portion. Therefore, the temperature of the peripheral edge of the heat radiating plate 53 is lower than that of the central portion.

Since the articulating portion 51 opens facing the right end side (that is, the peripheral side) of the heat radiating plate 53, the air after heat exchange having a relatively low temperature can be sucked into the second duct 35. it can. It should be noted that this suction is realized by creating a negative pressure by opening the second intake port 49 of the blower 37 in the second duct 35. At this time, since the fin outer flow path is formed in the first duct 29, the air flow across the heat radiating plate 53 in the left-right direction becomes easy, so that the air in the first duct 29 passes through the connecting portion 51. Can easily flow into the second duct 35.

As a result, the camera module 11 can easily cool the IC 33 by facilitating the introduction of air near the peripheral end portion of the heat radiating plate 53, not near the center, into the second duct 35 via the connecting portion 51.

In the camera module 11, the first heat source may be the image sensor 19. In the camera module 11, the image sensor 19 can be cooled by a large amount of outside air, which is the mainstream of the first duct 29 taken in from the intake port 39.

In the camera module 11, the second heat source may be the IC 33. The camera module 11 can cool the IC 33 with the air flowing from the first duct 29 through the connecting portion 51. The IC 33 has a higher guaranteed temperature than the image sensor 19. For example, the guaranteed temperature of the image sensor 19 is about 65 ° C, and the guaranteed temperature of the IC 33 is about 100 ° C. Therefore, even if the air after cooling the image sensor 19 is taken into the second duct 35 via the connecting portion 51, the camera module 11 can cool the IC 33 operably.

The camera module 11 may be mounted on the gimbal.

In the camera module 11, when the gimbal camera is used, the air can be exhausted in a direction different from that of the hand holding the grip attached to the lower side. As a result, the camera module 11 can prevent the outside air after heat exchange discharged from the exhaust port 41 of the device housing 13 from hitting the user.

Therefore, according to the camera module 11 according to the present embodiment, the cooling efficiency can be improved and the size can be reduced even when a plurality of heat sources are cooled.

Although the present disclosure has been described above using the embodiments, the technical scope of the present disclosure is not limited to the scope described in the above-described embodiments. It will be apparent to those skilled in the art to make various changes or improvements to the embodiments described above. It is clear from the description of the claims that the form with such changes or improvements may be included in the technical scope of the present disclosure.

In the above embodiment, the camera module 11 is shown as an example of the electronic device, but other electronic devices having a plurality of heat sources may be used. For example, the electronic device may be an electronic device on which a plurality of electronic components having different guaranteed temperatures are mounted. Further, the electronic device may be used independently, may be used by being attached to a gimbal to stabilize the posture of the electronic device, or may be used by being attached to an unmanned aerial vehicle via a gimbal. Good.

11 Camera module 19 Imaging sensor 29 First duct 33 IC
35 Second duct 37 Blower 43 Plate front 45 Plate back 47 First intake port 49 Second intake port 51 Connecting part 53 Heat dissipation plate 55 Fin 61 Heat guide plate P pitch

Claims (10)

A first heat source, a second heat source, a first duct for introducing outside air, a second duct connected to the first duct, and a blower are provided.
In the blower, the housing of the blower has a first surface and a second surface.
The first surface has a first intake port, and the second surface has a second intake port.
The first duct is provided in the region between the first heat source and the second heat source, and leads to the first intake port.
The second duct leads to the second intake port.
Electronics. The air flowing through the first duct flows into the connecting portion where the first duct and the second duct are connected to each other and the first intake port.
The air that has flowed to the second duct through the connecting portion flows into the second intake port.
The electronic device according to claim 1. Further provided with a heat guide plate, which is in thermal contact with the second heat source,
The heat guide plate is exposed on the inner wall surface of the second duct.
The electronic device according to claim 1 or 2. The air flow direction in the first duct and the air exhaust direction by the blower are different directions.
The electronic device according to any one of claims 1 to 3. Further provided with a heat radiating plate, which is in thermal contact with the first heat source,
The heat radiating plate is exposed on the inner wall surface of the first duct.
The electronic device according to any one of claims 1 to 4. The heat radiating plate has a plurality of fins separated by a predetermined pitch, and has a plurality of fins.
The distance between the tip of the fin and the first surface is longer than the pitch of the fin.
The electronic device according to claim 5. The first duct has a rectangular cross section in the direction perpendicular to the air flow.
A connecting portion in which the first duct and the second duct are connected is arranged at one end of the rectangular shape in the longitudinal direction.
The electronic device according to any one of claims 2 to 6. The first heat source is an image sensor.
The electronic device according to any one of claims 1 to 7. The second heat source is an IC.
The electronic device according to any one of claims 1 to 8. The electronic device is mounted on the gimbal.
The electronic device according to any one of claims 1 to 9.

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