Imaging device

Abstract

Provided is an imaging device that makes it possible to improve cooling performance and noise reduction performance.　The present invention comprises: a housing (110) that has an exhaust port (1(1)0c); a cooling fan (111) that is provided inside the housing (110) and that generates an airflow along the vertical direction; a first upper heat dissipation member (1(1)8bu) that is provided in a first region (122) on the downstream side of the airflow relative to the cooling fan (111) inside the housing (110) and that extends along the front-rear direction when viewed in the vertical direction; and a second heat dissipation member (1(1)9b) that is provided in the first region (122) and that extends along the left-right direction which intersects the front-rear direction. The exhaust port (1(1)0c) exhausts air along the left-right direction, the first upper heat dissipation member (1(1)8bu) is inclined with respect to the left-right direction, and the second heat dissipation member (1(1)9b) has a curved surface at an end part on the side opposite from the exhaust port (1(1)0c) in the left-right direction.

Description

Imaging device

[0001] The present invention relates to an imaging device.

[0002] In Patent Document 1, an imaging unit to be air-cooled supported by a main frame, an image processing unit, and a writing unit are provided. The imaging unit includes an imaging element and a first heat sink. The image processing unit includes a plurality of IC chips and a second heat sink. The writing unit includes a connector into which a recording medium is inserted and a third heat sink. The first heat sink, the second heat sink, and the third heat sink are orthogonally arranged downstream of the fan in the duct. The air flowing into the duct through the intake port flows out to the outside through the exhaust port. A plurality of rectifying plates are provided at the intake port and the exhaust port in an inclined state. An imaging device is described.

[0003] In Patent Document 2, a first heat radiation unit for radiating heat of an imaging unit, a second heat radiation unit for radiating heat of a substrate and a recording medium, and a third heat radiation unit for radiating heat of a circuit board are provided. The first heat radiation fins of the first heat radiation unit, the second heat radiation fins of the second heat radiation unit, and the third heat radiation fins of the third heat radiation unit are orthogonally arranged in the flowing space downstream of the cooling fan. An electronic device is described in which cooling air flows in from the intake port and flows out from the exhaust port. In Patent Document 3, as heat radiation openings on the back cover of the camera body, an upper opening is provided at the upper part, a bottom opening is provided at the bottom surface, and a back opening is provided on the left side surface when viewed from the back. The air discharged from the cooling fan built in the cooling accessory flows into the bottom opening. The sheet metal forming the air flow path has fins formed in an arc shape from the bottom opening toward the back opening. An imaging device is described.

[0004] Japanese Patent Application Laid-Open No. 2022-135655 International Publication No. 2021 / 049144 Japanese Patent Application Laid-Open No. 2023-120616

[0005] One embodiment according to the technology of the present disclosure provides an imaging device capable of improving cooling performance and quiet performance.

[0006] (1) An imaging device comprising: a housing having an exhaust port; an air cooling mechanism provided inside the housing for generating an airflow along a first direction; a first heat dissipation member provided in a first region downstream of the air cooling mechanism inside the housing and extending along a second direction in a view in the first direction; and a second heat dissipation member provided in the first region and extending along a third direction intersecting the second direction, wherein the exhaust port exhausts air along the third direction, the first heat dissipation member is inclined with respect to the third direction, and the second heat dissipation member has a curved surface at the end opposite to the exhaust port in the third direction.

[0007] (2) An imaging device as described in (1), wherein the first heat dissipation member is inclined in a direction that guides the airflow toward the exhaust port.

[0008] (3) An imaging device according to (1) or (2), wherein the first heat dissipation member is a plurality of heat dissipation fins arranged in the third direction.

[0009] (4) An imaging device according to any one of (1) to (3), wherein the curved surface of the second heat dissipation member is curved in the second direction.

[0010] (5) An imaging device according to any one of (1) to (4), wherein the second heat dissipation member is a plurality of heat dissipation fins arranged in the second direction.

[0011] (6) An imaging device according to (5), wherein the plurality of heat dissipation fins of the second heat dissipation member include heat dissipation fins whose curved surface is bent toward the first heat dissipation member.

[0012] (7) An imaging device according to (6), wherein the plurality of heat dissipation fins of the second heat dissipation member include: a first heat dissipation fin whose curved surface is bent toward the first heat dissipation member; and a second heat dissipation fin provided between the first heat dissipation member and the first heat dissipation fin, whose curved surface is bent toward the first heat dissipation fin.

[0013] (8) An imaging device according to any one of (1) to (7), comprising a first rectifier member provided in the first region, which suppresses the merging of an airflow from the air cooling mechanism toward the exhaust port via the first heat dissipation member and an airflow from the air cooling mechanism toward the exhaust port without passing through the first heat dissipation member.

[0014] (9) An imaging device according to any one of (1) to (8), wherein the first heat dissipation member is a plurality of heat dissipation fins arranged in the third direction, and the imaging device includes a second flow straightening member provided in the first region for suppressing the merging of airflow that has passed from the air cooling mechanism through the second heat dissipation member and between the heat dissipation fins of the first heat dissipation member, and airflow that has passed from the air cooling mechanism through the heat dissipation fins of the first heat dissipation member without passing through the second heat dissipation member.

[0015] (10) An imaging device as described in (9), wherein the second rectifier member is made of the same material as the first heat dissipation member.

[0016] (11) An imaging device according to any one of (1) to (10), wherein the housing has an air intake port, the air intake port draws in air along the third direction, and is provided with a third heat dissipation member located in a second region upstream of the air cooling mechanism inside the housing and extending along the second direction, the third heat dissipation member is a plurality of heat dissipation fins arranged in the third direction, and the plurality of heat dissipation fins of the third heat dissipation member have different lengths along the first direction depending on their position in the third direction.

[0017] (12) An imaging device according to (11), wherein the plurality of heat dissipation fins of the third heat dissipation member have different positions on the end opposite to the air cooling mechanism in the first direction depending on their position in the third direction.

[0018] (13) An imaging device according to (12), wherein the plurality of heat dissipation fins of the third heat dissipation member are such that the heat dissipation fins closer to the intake port in the third direction are closer to the position of the end opposite to the air cooling mechanism in the first direction.

[0019] (14) An imaging device according to any one of (1) to (13), wherein the housing has an air intake port, the air intake port draws in air along the third direction, and is provided in a second region upstream of the airflow from the air cooling mechanism inside the housing, and comprises a fourth heat dissipation member extending along the third direction, the fourth heat dissipation member being a plurality of heat dissipation fins arranged in the second direction, and the plurality of heat dissipation fins of the fourth heat dissipation member having different lengths along the first direction depending on their position in the second direction.

[0020] (15) An imaging device according to (14), wherein the position of the ends of the plurality of heat dissipation fins of the fourth heat dissipation member on the side of the air cooling mechanism in the first direction differs depending on the position in the second direction.

[0021] (16) An imaging device according to (14) or (15), wherein at least one of the plurality of heat dissipation fins of the fourth heat dissipation member has a different length along the first direction depending on its position in the third direction.

[0022] (17) An imaging device according to (16), wherein at least one of the plurality of heat dissipation fins of the fourth heat dissipation member has a different position at the end on the side of the air cooling mechanism in the first direction depending on its position in the third direction.

[0023] (18) An imaging device according to any one of (1) to (17), wherein, in the view in the first direction, the center of the second heat dissipation member is located on the opposite side from the exhaust port with respect to the center of the air cooling mechanism.

[0024] (19) An imaging device according to (18), wherein, when viewed in the direction of the first direction, the direction in which the vane portion of the air cooling mechanism moves in the overlapping portion of the air cooling mechanism and the second heat dissipation member is defined as the direction of movement, the first heat dissipation member is located on the side of the direction of movement relative to the second heat dissipation member in the second direction.

[0025] (20) An imaging device according to any one of (1) to (19), wherein the curved surface is formed by bending the end portion.

[0026] (21) Imaging device comprising: a housing having an air intake port; an air cooling mechanism provided inside the housing for generating an airflow along a first direction; a third heat dissipation member provided in a second region upstream of the airflow from the air cooling mechanism inside the housing and extending along a second direction in a view in the first direction; and a fourth heat dissipation member provided in the second region and extending along a third direction intersecting the second direction, wherein the air intake port draws in air along the third direction, the third heat dissipation member is a plurality of heat dissipation fins arranged in the third direction, the lengths of the plurality of heat dissipation fins of the third heat dissipation member differ along the first direction depending on their position in the third direction, the fourth heat dissipation member is a plurality of heat dissipation fins arranged in the second direction, and the lengths of the plurality of heat dissipation fins of the fourth heat dissipation member differ along the first direction depending on their position in the second direction.

[0027] According to the present invention, it is possible to provide an imaging device that can improve cooling performance and quietness.

[0028] This is a simplified perspective view showing an example of the imaging device 100 in this embodiment viewed from the front left. This is a simplified perspective view of the imaging device 100 shown in Figure 1 viewed from the front right. This is a diagram showing an example of airflow inside the housing 110. This is a view of the heat sink provided inside the housing 110 from the rear side of the imaging device 100. This is a view of the heat sink provided inside the housing 110 from the left side of the imaging device 100. This is a perspective view showing an example of the arrangement relationship between the first heat sink 118 and the cooling fan 111. This is a view of the first heat sink 118 from the rear side of the imaging device 100. This is a view of the second heat sink 119 from the rear right side of the imaging device 100. This is a view of the second heat sink 119 from below the imaging device 100. This is a view of the second heat sink 119, the first heat sink 118, and the cooling fan 111 inside the housing 110 viewed from above the imaging device 100. This is a diagram showing airflow in the second heat sink 119 and the first heat sink 118. This figure shows an example of a first rectifier member that rectifies the airflow from the cooling fan 111. This is a perspective view of a modified first heatsink 218 seen from the left rear side of the imaging device 100. This is a view of the first heatsink 218 shown in Figure 13 seen from the rear side of the imaging device 100. This is a perspective view showing an example of the arrangement relationship between the third heatsink 113 and the fourth heatsink 116. This is a perspective view of the third heatsink 113 seen from the left front side of the imaging device 100. This is a view of the third heatsink 113 shown in Figure 16 seen from the front side of the imaging device 100. This is a perspective view of the fourth heatsink 116 seen from the left front side of the imaging device 100. This is a perspective view showing the arrangement relationship between the fourth heatsink 116 and the cooling fan 111. This is a perspective view of a modified third heatsink 113 seen from the left front side of the imaging device 100. This is a perspective view showing the arrangement relationship between the third heatsink 113 and the cooling fan 111.

[0029] Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the directions are referred to as "upward," "downward," "leftward," "rightward," "forward," and "backward," but these directions are relative directions set for the imaging device shown in each figure for the sake of explanation.

[0030] <Image Device of an Embodiment> Figure 1 is a simplified perspective view showing an example of the image device 100 in this embodiment as seen from the front left. Figure 2 is a simplified perspective view of the image device 100 shown in Figure 1 as seen from the front right. Examples of image devices include, for example, a digital camera or a single-lens reflex camera capable of capturing video. As shown in Figures 1 and 2, the image device 100 comprises a housing 110 that constitutes the main body of the image device 100, and a lens 120 attached to the housing 110.

[0031] The housing 110 is formed in a roughly cubic shape. A first air intake port 110a is provided at the lower left end of the housing 110. A second air intake port 110b is provided at the lower right end of the housing 110. The first air intake port 110a and the second air intake port 110b are openings that allow air from outside the housing 110 to be drawn into the housing 110. The first air intake port 110a and the second air intake port 110b draw in air along the left-right direction of the housing 110. The first air intake port 110a and the second air intake port 110b are composed of, for example, multiple slit-shaped openings.

[0032] Furthermore, an exhaust port 110c is provided at the upper right end of the housing 110. The exhaust port 110c is an opening that allows air from inside the housing 110 to be discharged to the outside of the housing 110. The exhaust port 110c exhausts air along the left-right direction of the housing 110. The exhaust port 110c is composed of, for example, multiple slit-shaped openings.

[0033] The opening constituting the exhaust port 110c is provided, for example, in the wall connecting the upper wall and the right side wall of the housing 110 (upper right wall). Although not shown in the figures, the opening constituting the first intake port 110a is provided in the wall connecting the left side wall and the lower wall (lower left wall), and the opening constituting the second intake port 110b is provided in the wall connecting the right side wall and the lower wall (lower right wall). Note that the exhaust port 110c may be, for example, an opening provided in the right side wall, the first intake port 110a may be an opening provided in the left side wall, and the second intake port 110b may be an opening provided in the right side wall.

[0034] Furthermore, a lid 121 for a recording unit 112 (described later in Figure 5) into which a recording medium is inserted and removed is provided at the lower part of the left wall of the housing 110. The recording medium stores imaging data from the imaging device 100.

[0035] The lens 120 is mounted on the front side (front) of the housing 110. The lens 120 is replaceable. The lens 120 includes at least an imaging lens, such as a focus lens or a zoom lens.

[0036] Figure 3 shows an example of airflow within the housing 110. Note that in Figure 3, unnecessary components have been omitted to make the airflow easier to see. As shown in Figure 3, an air-cooling fan 111 is provided in the housing 110, approximately in the center. The air-cooling fan 111 is an example of the "air-cooling mechanism" of the present invention. The air-cooling fan 111 is provided with a gap between it and an exhaust port 110c located at the upper right end of the housing 110. "With a gap between it and the exhaust port 110c" means that the air-cooling fan 111 is not located near the exhaust port 110c. "With a gap" means, for example, that there is enough space between the air-cooling fan 111 and the exhaust port 110c to accommodate, or actually accommodate, a heat-generating element such as an electronic component. Note that, instead of an air-cooling fan, a blower or compressor may be used, for example.

[0037] The cooling fan 111 is installed inside the housing 110 and generates airflow in the vertical direction. The vertical direction is an example of the "first direction" of the present invention and is the airflow direction of the cooling fan 111. The cooling fan 111 generates airflow within the housing 110 from the first intake port 110a and the second intake port 110b toward the exhaust port 110c. For example, as the cooling fan 111 rotates, as shown by the solid arrows in Figure 3, it draws air from outside the housing 110 into the housing 110 through the first intake port 110a located at the lower left end of the housing 110 and the second intake port 110b located at the lower right end of the housing 110, passes through the cooling fan 111, and exits the housing 110 to the outside through the exhaust port 110c located at the upper right end of the housing 110.

[0038] Furthermore, a rectifier member 110d is provided at the lower central end of the housing 110 to regulate the airflow within the housing 110. The rectifier member 110d is located upstream of the airflow indicated by the solid arrow in Figure 3 (downward in Figure 3) from the air-cooling fan 111. The upstream side of the airflow refers to the side of the first intake port 110a and the second intake port 110b within the housing 110 (not the side of the exhaust port 110c). The rectifier member 110d is a convex-shaped member that protrudes from the lower wall of the housing 110 toward the upper wall. The height dimension H of the rectifier member 110d is smaller than the width dimension W. The rectifier member 110d rectifies the intake air from the first intake port 110a and the second intake port 110b. The rectifier member 110d directs the air flowing into the housing 110 from the first intake port 110a and the second intake port 110b so that it rises towards the cooling fan 111, as indicated by the solid arrows.

[0039] Inside the housing 110, a first region 122 is provided downstream of the cooling fan 111 in the airflow direction. The first region 122 is the exhaust region of the housing 110 in the vertical direction relative to the cooling fan 111. Inside the housing 110, a second region 123 is provided upstream of the cooling fan 111 in the airflow direction. The second region 123 is the intake region of the housing 110 in the vertical direction relative to the cooling fan 111. The exhaust port 110c is provided downstream of the cooling fan 111 inside the housing 110. The first intake port 110a and the second intake port 110b are provided upstream of the cooling fan 111 inside the housing 110.

[0040] Figure 4 is a view of the heat sink located inside the housing 110, seen from the rear of the imaging device 100. Figure 5 is a view of the heat sink located inside the housing 110, seen from the left side of the imaging device 100. As shown in Figures 4 and 5, the housing 110 is equipped with a first heat sink 118, a second heat sink 119, a third heat sink 113, a fourth heat sink 116, and a fifth heat sink 114. The housing 110 also houses a recording unit 112, a main board 115, and an imaging unit 117.

[0041] The first heat sink 118 is a member attached to the imaging unit 117. The first heat sink 118 has a plurality of heat radiation fins. A part of the first heat sink 118 is provided in a first region 122 (above the air-cooling fan 111 in FIGS. 4 and 5) on the downstream side of the air flow indicated by the solid-line arrow in FIG. 3 with respect to the air-cooling fan 111.

[0042] The second heat sink 119 is a member attached to an SDI (Serial Digital Interface) circuit (not shown). The second heat sink 119 is arranged to intersect the first heat sink 118. The second heat sink 119 has a plurality of heat radiation fins. The second heat sink 119 is provided in a first region 122 (above the air-cooling fan 111 in FIGS. 4 and 5) on the downstream side of the air flow indicated by the solid-line arrow in FIG. 3 with respect to the air-cooling fan 111.

[0043] The third heat sink 113 and the fifth heat sink 114 are members attached to the recording unit 112. The third heat sink 113 has a plurality of heat radiation fins. The third heat sink 113 is provided in a second region 123 (below the air-cooling fan 111 in FIGS. 4 and 5) on the upstream side of the air flow indicated by the solid-line arrow in FIG. 3 with respect to the air-cooling fan 111. The fifth heat sink 114 is composed of a heat transfer sheet or a heat radiation sheet with high heat conductivity. The fifth heat sink is, for example, a metal sheet, a graphite sheet, a copper foil tape, an aluminum tape, etc. that can be attached to the recording unit 112.

[0044] The recording unit 112 is a device into which a recording medium for recording the imaging data of the imaging device 100 is inserted. The recording unit 112 is provided at the lower left of the rear part inside the housing 110. In this example, the recording unit 112 is provided along the rear wall of the housing 110 on the rear side with respect to the air-cooling fan 111. The recording unit 112 has a medium storage part 112a and an electronic member 112b.

[0045] The media storage unit 112a is a part where a recording medium is stored. An insertion port 112c for inserting and removing the recording medium is provided in the media storage unit 112a. The media storage unit 112a is arranged such that the insertion port 112c is exposed to the outside from the left side wall of the housing 110. The lid portion 121 shown in FIG. 1 is attached to the insertion port 112c of the media storage unit 112a. The electronic member 112b is an electronic substrate (for example, a recording card substrate) that performs a process of writing imaging data to the recording medium stored in the media storage unit 112a. The recording medium is, for example, a memory card of CFexpress Type B or XQD.

[0046] The third heat sink 113 and the fifth heat sink 114 cool the recording unit 112 by absorbing the heat generated by the recording unit 112 and radiating it into the air. The third heat sink 113 is attached to the electronic member 112b of the recording unit 112 and radiates the heat of the electronic member 112b. The fifth heat sink 114 is attached to the media storage unit 112a of the recording unit 112 and radiates the heat of the media storage unit 112a. Heat conduction occurs between the media storage unit 112a and the recording medium stored therein. Therefore, the heat radiated from the media storage unit 112a includes the heat generated by the recording medium. The fifth heat sink 114 radiates the heat of the media storage unit 112a and the recording medium stored therein.

[0047] The fourth heat sink 116 is a member attached to the main board 115. The fourth heat sink 116 has a plurality of radiation fins. The fourth heat sink 116 is provided in a second region 123 (the lower side of the air-cooling fan 111 in FIGS. 4 and 5) on the upstream side of the air flow indicated by the solid line arrow in FIG. 3 with respect to the air-cooling fan 111.

[0048] The main board 115 is an electronic board that performs, for example, imaging control and image processing of the imaging device 100. The main board 115 is provided at the right end portion inside the housing 110. In this example, the main board 115 is provided along the right side wall of the housing 110 on the right side of the air-cooling fan 111. The fourth heat sink 116 cools the main board 115 by absorbing the heat generated by the main board 115 and radiating it into the air.

[0049] The imaging unit 117 includes an image sensor 117a and an electronic component 117b. The imaging unit 117 is located in the front part of the housing 110 so as to face the lens 120. In this example, the imaging unit 117 is located in front of the cooling fan 111 and along the front wall of the housing 110. The image sensor 117a and the electronic component 117b are arranged in the direction of the optical axis of the lens 120, with the electronic component 117b positioned on the back side of the image sensor 117a. Light incident from the lens 120 is imaged onto the image sensor 117a.

[0050] The image sensor 117a is composed of, for example, a CCD (Charge Coupled Device) image sensor or a CMOS (Complementary Metal Oxide Semiconductor) image sensor. The electronic component 117b includes a signal processing circuit that performs sampling processing, digital conversion processing, etc., on the captured image signal output from the image sensor 117a. The electronic component 117b also includes an image processing unit that digitally processes the captured image signal after processing by the signal processing circuit to generate captured image data in, for example, JPEG (Joint Photographic Experts Group) format.

[0051] <First Heat Sink> Figure 6 is a perspective view showing an example of the arrangement relationship between the first heat sink 118 and the cooling fan 111. Figure 7 is a view of the first heat sink 118 from the rear side of the imaging device 100. Figure 7 is a view of the first heat sink 118 with the cooling fan 111 removed as shown in Figure 6. As shown in Figures 6 and 7, the first heat sink 118 has a base portion 118a and a first heat dissipation member 118b. The first heat dissipation member 118b has a first upper heat dissipation member 118bu provided on the upper part of the base portion 118a and a first lower heat dissipation member 118bd provided on the lower part of the base portion 118a.

[0052] The base portion 118a is a plate-shaped member to which the electronic component 117b is attached. The electronic component 117b is attached to the side (front side) of the base portion 118a, which is located inside the housing 110, where the lens 120 is provided. The base portion 118a is made of a metal material such as aluminum or copper, which has high thermal conductivity.

[0053] The first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd are provided on the side of the base 118a opposite to the side to which the electronic component 117b is attached (the rear side). The first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd are composed of a plurality of heat dissipation fins extending from the base 118a in the front-rear direction. The front-rear direction is an example of the "second direction" of the present invention and is the direction along the optical axis. The second direction is a different direction from the direction of the airflow generated by the cooling fan 111 (the first direction).

[0054] The multiple heat dissipation fins 8bu1 to 8bu13 of the first upper heat dissipation member 118bu and the multiple heat dissipation fins 8bd1 to 8bd13 of the first lower heat dissipation member 118bd are arranged in the left-right direction. The left-right direction is an example of the "third direction" of the present invention. The multiple heat dissipation fins 8bu1 to 8bu13 of the first upper heat dissipation member 118bu are provided at an inclination with respect to the vertical direction and the left-right direction. "Inclined with respect to the ~ direction" means that they are neither parallel nor perpendicular to the ~ direction. The multiple heat dissipation fins 8bu1 to 8bu13 of the first upper heat dissipation member 118bu are provided at an inclination in a direction that guides the airflow from the air cooling fan 111 to the exhaust port 110c.

[0055] The first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd are fins that dissipate heat from the electronic component 117b. Fins that dissipate heat from the electronic component 117b mean that the first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd are heat conductive members that are thermally connected to the electronic component 117b. For example, the first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd may be in direct contact with the electronic component 117b, or they may be connected to the electronic component 117b via other heat conductive members. In this example, the first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd are connected to the electronic component 117b via the base portion 118a. The first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd dissipate the heat conducted from the electronic component 117b to the base portion 118a.

[0056] The cooling fan 111 is provided, at least in part, between the first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd. "Provided between the first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd" means that, in the direction of airflow from the cooling fan 111, it is provided between the first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd. In this example, a portion of the front of the cooling fan 111 is provided between the first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd. This arrangement allows the first upper heat dissipation member 118bu and the first lower heat dissipation member 118bd to release the heat from the electronic component 117b into the airflow of the cooling fan 111 (the airflow indicated by the solid arrow in Figure 3).

[0057] In the example described above, the heat dissipation fins of the first upper heat dissipation member 118bu are designated as heat dissipation fins 8bu1 to 8bu13, and the heat dissipation fins of the first lower heat dissipation member 118bd are designated as heat dissipation fins 8bd1 to 8bd13, but the number of heat dissipation fins is not limited to these.

[0058] <Second Heat Sink> Figure 8 is a view of the second heat sink 119 from the right rear side of the imaging device 100. Figure 9 is a view of the second heat sink 119 from below the imaging device 100. As shown in Figures 8 and 9, the second heat sink 119 has a base portion 119a and a second heat dissipation member 119b.

[0059] The base portion 119a is a plate-shaped member that is attached to the SDI circuit. The SDI circuit is attached to the upper surface of the base portion 119a, which is located inside the housing 110. The base portion 119a is made of a metal material such as aluminum or copper, which has high thermal conductivity.

[0060] The second heat dissipation member 119b is provided on the side of the base 119a where the cooling fan 111 is located (the lower side). The second heat dissipation member 119b is composed of a plurality of heat dissipation fins 9b1 to 9b10 that extend along the left-right direction (third direction) on the lower side of the base 119a. The direction in which the heat dissipation fins 9b1 to 9b10 of the second heat dissipation member 119b extend is different from the direction of the airflow generated by the cooling fan 111 (first direction) and the direction in which the heat dissipation fins of the first heat dissipation member 118b extend (second direction).

[0061] The multiple heat dissipation fins 9b1 to 9b10 of the second heat dissipation member 119b are arranged in the front-to-back direction (second direction). The heat dissipation fins 9b1 to 9b10 have a curved portion 9bc at the end opposite to the side (left side) where the exhaust port 110c is provided (right side) in the left-to-right direction. The curved portion 9bc of the heat dissipation fins 9b1 to 9b10 is bent in the front-to-back direction (second direction). The curved portion 9bc is formed by bending the ends of the heat dissipation fins 9b1 to 9b10.

[0062] Figure 10 is a view of the second heat sink 119, the first heat sink 118, and the cooling fan 111 inside the housing 110, as seen from above the imaging device 100. Figure 11 is a diagram showing the airflow in the second heat sink 119 and the first heat sink 118. The second heat sink 119 and the first heat sink 118 are shown in cross-section.

[0063] In the second heat sink 119, the curved portions 9bc of the multiple heat dissipation fins 9b1 to 9b10 of the second heat dissipation member 119b have different curvature directions depending on the position where the heat dissipation fins are arranged. Of the heat dissipation fins 9b1 to 9b10, the heat dissipation fins 9b1 to 9b5, which are located on the side away from the first upper heat dissipation member 118bu, have their curved portions 9bc bent towards the first upper heat dissipation member 118bu. In contrast, the heat dissipation fins located on the side closer to the first upper heat dissipation member 118bu, that is, the heat dissipation fins 9b6 to 9b10, which are provided between the first upper heat dissipation member 118bu and the heat dissipation fins 9b1 to 9b5, have their curved portions 9bc bent towards the heat dissipation fins 9b1 to 9b5.

[0064] Furthermore, the multiple heat dissipation fins 9b1 to 9b10 of the second heat dissipation member 119b have different lengths in the left-right direction depending on their arrangement. The heat dissipation fins 9b1 to 9b10 are formed such that the heat dissipation fins located in the center are shorter, and the heat dissipation fins located at both ends are longer. The heat dissipation fins 9b1 to 9b10, which have different lengths, are arranged such that the ends on the side without the curved surface portion 9bc (right side) are aligned in the left-right direction, while the ends on the side with the curved surface portion 9bc (left side) are different. Specifically, the heat dissipation fins are arranged such that as you move from heat dissipation fin 9b6 to heat dissipation fin 9b10 towards the front side (first upper heat dissipation member 118bu side), the length of the heat dissipation fin on the curved surface portion 9bc side increases. Also, as you move from heat dissipation fin 9b5 to heat dissipation fin 9b1 towards the rear side, the length of the heat dissipation fin on the curved surface portion 9bc side increases. The heat dissipation fins 9b1 to 9b5 are examples of the "first heat dissipation fins" of the present invention. The heat dissipation fins 9b6 to 9b10 are examples of the "second heat dissipation fins" of the present invention.

[0065] The multiple heat dissipation fins 9b1 to 9b10 of the second heat dissipation member 119b are positioned such that, in the left-right direction (third direction), the center 119p of the heat dissipation fins 9b1 to 9b10 is located on the opposite side (left side) from the side (right side) where the exhaust port 110c is located relative to the center 111p of the air cooling fan 111. When viewed from above inside the housing 110, as shown in Figure 10, the multiple heat dissipation fins 9b1 to 9b10 of the second heat dissipation member 119b are arranged in the area of ​​approximately the left half of the air cooling fan 111.

[0066] When viewing the inside of the housing 110 from the top and bottom (first direction), if we define the direction of movement of the blade portion 111w of the air-cooling fan 111 in the front-to-back direction (second direction) in the overlapping portion of the air-cooling fan 111 and the multiple heat dissipation fins 9b1 to 9b10 of the second heat dissipation member 119b as the first direction of movement, then in the front-to-back direction, the first upper heat dissipation member 118bu of the first heat sink 118 is located on the side of the first direction of movement relative to the heat dissipation fins 9b1 to 9b10. When viewing the inside of the housing 110 from above, as shown by the dashed arrow 111F in Figure 10, when the air-cooling fan 111 is rotating clockwise, in the overlapping portion of the air-cooling fan 111 and the heat dissipation fins 9b1 to 9b10, the blade portion 111w moves forward in the front-to-back direction, and the first upper heat dissipation member 118bu is positioned in front of the heat dissipation fins 9b1 to 9b10.

[0067] With this configuration of the second heat sink 119, the air sent from the cooling fan 111 to the first region 122 is flowed in the direction of the dashed arrows shown in Figure 11 by the clockwise rotation of the blades 111w. For example, the air passing between the heat dissipation fins 9b1 to 9b5 is flowed to the left by the clockwise rotation of the blades 111w. The air that has passed between the heat dissipation fins 9b1 to 9b5 is also flowed along the left side wall of the housing 110 by the curved surface 9bc of the heat dissipation fins 9b1 to 9b5 and the left side wall of the housing 110. The air that has flowed along the left side wall of the housing 110 is then dispersed by the clockwise rotation of the blades 111w and the curved surface 9bc of the heat dissipation fins 9b6 to 9b10 into air that flows to the right passing between the heat dissipation fins 9b6 to 9b10 and air that flows towards the first upper heat dissipation member 118bu. Furthermore, since the heat dissipation fins 9b6 to 9b10 are positioned to overlap the hub (central part) of the cooling fan 111, air tends to flow to the right between the heat dissipation fins 9b6 to 9b10. The air that flows to the right between the heat dissipation fins 9b6 to 9b10 flows towards the exhaust port 110c provided on the right side of the housing 110. On the other hand, the air that flows towards the first upper heat dissipation member 118bu passes between, for example, the heat dissipation fins 8bu1 to 8bu4, which are located in the left region of the heat dissipation fins 8bu1 to 8bu13 of the first upper heat dissipation member 118bu, and flows towards the exhaust port 110c provided on the right side of the housing 110, as indicated by the dashed arrow 118N, due to the inclination of the heat dissipation fins 8bu1 to 8bu4.

[0068] In the example described above, the heat dissipation fins of the second heat dissipation member 119b are designated as heat dissipation fins 9b1 to 9b10, but the number of heat dissipation fins is not limited to these.

[0069] <Airflow straightening member> Figure 12 shows an example of a first airflow straightening member that straightens the air from the cooling fan 111. As shown in Figure 12, a first airflow straightening member 131 is provided in the first region 122 inside the housing 110 to straighten the air sent out from the cooling fan 111 and guide it to the exhaust port 110c. The first airflow straightening member 131 is, for example, a plate member that suppresses the merging of the airflow sent out from the cooling fan 111 and heading towards the exhaust port 110c via the first upper heat dissipation member 118bu of the first heat sink 118, and the airflow sent out from the cooling fan 111 and heading towards the exhaust port 110c without passing through the first upper heat dissipation member 118bu of the first heat sink 118.

[0070] "Via the first upper heat dissipation member 118bu" means through a flow path along the first upper heat dissipation member 118bu, for example, passing between the heat dissipation fins 8bu1 to 8bu13 of the first upper heat dissipation member 118bu. "Airflow heading towards the exhaust port 110c without passing through the first upper heat dissipation member 118bu" includes, for example, the airflow that has passed between the heat dissipation fins 9b6 to 9b10 of the second heat sink 119 (see Figure 11). "Suppressing merging" does not mean complete suppression, but rather it is sufficient that merging is suppressed more than when the first rectifier member 131 is not provided.

[0071] <Modified First Heat Sink> Figure 13 is a perspective view of the modified first heat sink 218 as seen from the left rear side of the imaging device 100. Figure 14 is a view of the first heat sink 218 shown in Figure 13 as seen from the rear side of the imaging device 100. As shown in Figures 13 and 14, the modified first heat sink 218 differs from the first heat sink 118 described in Figures 6 and 7 in that it has a second rectifier member 132. The second rectifier member 132 is, for example, a plate member that rectifies the air sent out from the cooling fan 111 and guides it to the exhaust port 110c.

[0072] The second rectifier member 132 suppresses the merging of two airflows: one that is sent from the cooling fan 111 and passes through the second heat dissipation member 119b and between the heat dissipation fins 8bu1 to 8bu4 of the first upper heat dissipation member 218bu, and the other that is sent from the cooling fan 111 and passes through the heat dissipation fins 8bu4 to 8bu13 of the first upper heat dissipation member 218bu without passing through the second heat dissipation member 119b. "Suppressing merging" does not mean complete suppression; it is sufficient that the merging is suppressed more than it would be without the second rectifier member 132.

[0073] The second rectifier member 132 is attached, for example, to the heat dissipation fin 8bu4 of the first upper heat dissipation member 218bu. The second rectifier member 132 extends to the right from the upper end of the heat dissipation fin 8bu4, continuously covering the upper part of the heat dissipation fins 8bu5 to 8bu13. The side of the second rectifier member 132 on the base 218a side is connected to the base 218a. As a result, the airflow from the cooling fan 111, through the second heat dissipation member 119b, and through the heat dissipation fins 8bu1 to 8bu4 of the first upper heat dissipation member 218bu, passes over the second rectifier member 132 and heads towards the exhaust port 110c. The airflow from the cooling fan 111, which passes through the heat dissipation fins 8bu4 to 8bu13 of the first upper heat dissipation member 218bu without passing through the second heat dissipation member 119b, passes under the second rectifier member 132 and heads toward the exhaust port 110c.

[0074] The second rectifier member 132 is made of the same material as the first upper heat dissipation member 218bu. "Made of the same material as the first upper heat dissipation member 218bu" means that it is the same metal as the first upper heat dissipation member 218bu. The second rectifier member 132 is integrally molded with, for example, the heat dissipation fins 8bu4 of the first upper heat dissipation member 218bu. This allows the second rectifier member 132 to be formed in the same process as the mold molding of the first heat sink 218. Furthermore, the second rectifier member 132 also functions as a heat dissipation fin. However, the second rectifier member 132 is not limited to integral molding of metal, and may be made of a different material such as resin.

[0075] The configuration of the modified first heat sink 218, other than the second rectifier member 132, is the same as that of the first heat sink 118 described in Figures 6 and 7.

[0076] <Third Heat Sink and Fourth Heat Sink> Figure 15 is a perspective view showing an example of the arrangement relationship between the third heat sink 113 and the fourth heat sink 116. As shown in Figure 15, the third heat sink 113 has a base portion 113a and a third heat dissipation member 113b. The fourth heat sink 116 has a base portion 116a and a fourth heat dissipation member 116b.

[0077] The base portion 113a of the third heat sink 113 is a plate-shaped member to which the electronic component 112b of the recording unit 112 is attached. The electronic component 112b is attached to the side of the base portion 113a, which is located inside the housing 110, that is on the side where the rear wall of the housing 110 is provided (the rear side). The base portion 113a is made of a metal material such as aluminum or copper, which has high thermal conductivity.

[0078] The third heat dissipation member 113b of the third heat sink 113 is provided on the side of the base 113a opposite to the side to which the electronic component 112b is attached (the front side). The third heat dissipation member 113b is composed of a plurality of fins extending in the vertical direction (first direction) and the front-to-back direction (second direction) on the front side of the base 113a. The third heat dissipation member 113b is a fin that dissipates heat from the electronic component 112b. A fin that dissipates heat from the electronic component 112b means that the third heat dissipation member 113b is a heat conductive member that is thermally connected to the electronic component 112b. For example, the third heat dissipation member 113b may be in direct contact with the electronic component 112b, or it may be connected to the electronic component 112b via another heat conductive member.

[0079] The base portion 116a of the fourth heat sink 116 is a plate-shaped member to which the main circuit board 115 is attached. The main circuit board 115 is attached to the side of the base portion 116a located inside the housing 110, on the side where the right wall of the housing 110 is provided (the right side). The base portion 116a is made of a metal material such as aluminum or copper, which has high thermal conductivity.

[0080] The fourth heat dissipation member 116b of the fourth heat sink 116 is provided on the side of the base 116a opposite to the side to which the main substrate 115 is attached (the left side). The fourth heat dissipation member 116b is composed of a plurality of fins extending along the left-right direction (third direction) on the left side of the base 116a. The fourth heat dissipation member 116b is a fin that dissipates heat from the main substrate 115. A fin that dissipates heat from the main substrate 115 means that the fourth heat dissipation member 116b is a heat conductive member that is thermally connected to the main substrate 115. For example, the fourth heat dissipation member 116b may be in direct contact with the main substrate 115, or it may be connected to the main substrate 115 via another heat conductive member. In this example, the fourth heat dissipation member 116b is connected to the main substrate 115 via the base 116a. The fourth heat dissipation member 116b dissipates the heat conducted from the main substrate 115 to the base 116a.

[0081] The arrangement direction of the heat dissipation fins of the third heat dissipation member 113b in the third heat sink 113 is different from the arrangement direction of the heat dissipation fins of the fourth heat dissipation member 116b in the fourth heat sink 116. For example, the arrangement direction of the heat dissipation fins of the third heat dissipation member 113b and the arrangement direction of the heat dissipation fins of the fourth heat dissipation member 116b differs by approximately 90°. The multiple heat dissipation fins of the third heat dissipation member 113b are arranged in the left-right direction. In contrast, the multiple heat dissipation fins of the fourth heat dissipation member 116b are arranged in the front-back direction.

[0082] <Third Heat Sink> Figure 16 is a perspective view of the third heat sink 113 from the left front side of the imaging device 100. Figure 17 is a view of the third heat sink 113 shown in Figure 16 from the front side of the imaging device 100. As shown in Figures 16 and 17, the lengths H1 along the vertical direction (first direction) differ depending on the position of the multiple heat dissipation fins 3b1 to 3b5 of the third heat dissipation member 113b in the left-right direction (third direction). For example, as shown in Figure 17, the positions of the ends h1 to h5 on the side opposite to the cooling fan 111 in the vertical direction differ depending on the position of the multiple heat dissipation fins 3b1 to 3b5 in the left-right direction. "Position of the end opposite to the cooling fan 111" refers to the position of the lower end of the heat dissipation fin. "Different lengths H1" does not mean that the lengths of all heat dissipation fins are different. In this example, the position of the end h1 of heat dissipation fin 3b1 and the position of the end h2 of heat dissipation fin 3b2 are approximately the same.

[0083] The multiple heat dissipation fins 3b1 to 3b5 of the third heat dissipation member 113b are such that, in the left-right direction, the heat dissipation fins closer to the first air intake port 110a located on the left side are closer to the position of the end opposite the cooling fan 111 in the vertical direction. Specifically, among the heat dissipation fins 3b1 to 3b5, the heat dissipation fin 3b5 (the leftmost fin) closest to the first air intake port 110a has the shortest length H1, and the position of the lower end of the heat dissipation fin 3b5 (position of the end h5) is the highest.

[0084] In the example described above, the heat dissipation fins of the third heat dissipation member 113b are designated as heat dissipation fins 3b1 to 3b5, but the number of heat dissipation fins is not limited to these.

[0085] <Fourth Heat Sink> Figure 18 is a perspective view of the fourth heat sink 116 from the left front side of the imaging device 100. Figure 19 is a perspective view showing the arrangement relationship between the fourth heat sink 116 and the cooling fan 111. As shown in Figures 18 and 19, the multiple heat dissipation fins 6b1 to 6b11 of the fourth heat dissipation member 116b have different lengths along the vertical direction (first direction) depending on their position in the front-to-back direction (second direction) where they are arranged. "Length" refers to the height of the heat dissipation fins. Specifically, if we compare the height of the heat dissipation fins 6b1 to 6b11 at any position in the left-to-right direction, for example, the height of the left end 6bl (inside the dashed line) of each heat dissipation fin, the height differs depending on the heat dissipation fin.

[0086] Furthermore, the positions of the ends of the multiple heat dissipation fins 6b1 to 6b11 of the fourth heat dissipation member 116b differ depending on their position in the front-to-back direction, with respect to the air cooling fan 111 in the vertical direction. "End position" refers to the position of the upper end of the heat dissipation fin. Specifically, comparing the positions of the upper ends of the heat dissipation fins 6b1 to 6b11 at any position in the left-to-right direction, for example, the upper end of the left end 6bl (inside the dashed line) of each heat dissipation fin, the upper end position differs depending on the heat dissipation fin.

[0087] At least one of the multiple heat dissipation fins 6b1 to 6b11 of the fourth heat dissipation member 116b has a different length in the vertical direction depending on its position in the left-right direction. "Depending on its position in the left-right direction" means, for example, depending on the positional relationship (strength of airflow) with respect to the cooling fan 111 when viewed from above. Also, at least one of the multiple heat dissipation fins 6b1 to 6b11 of the fourth heat dissipation member 116b has a different position of its end on the cooling fan 111 side in the vertical direction depending on its position in the left-right direction. "End position" refers to the position of the upper end of the heat dissipation fin. For example, the upper end of the heat dissipation fin is curved so that it moves away from the cooling fan 111 (downwards) in positions where the airflow is stronger. Specifically, looking at heat dissipation fin 6b2, the position of its upper end 6bu (inside the dashed line) differs in the left-right direction, and the central part in the left-right direction is curved in a concave shape. The concave central part of heat dissipation fin 6b2 is below the blades of the cooling fan 111, which is a position where the airflow is strong.

[0088] In the example described above, the heat dissipation fins of the fourth heat dissipation member 116b are designated as heat dissipation fins 6b1 to 6b11, but the number of heat dissipation fins is not limited to these.

[0089] <Modified Version of the Third Heat Sink> Figure 20 is a perspective view of a modified version of the third heat sink 113, seen from the left front side of the imaging device 100. Figure 21 is a perspective view showing the arrangement relationship between the third heat sink 113 and the cooling fan 111. The configuration of the fourth heat dissipation member 116b described in Figures 18 and 19 for the fourth heat sink 116 may also be applied to the third heat dissipation member 113b of the third heat sink 113.

[0090] For example, the lengths of the multiple heat dissipation fins 3b1 to 3b5 of the third heat dissipation member 113b differ along the vertical direction (first direction) depending on their position in the left-right direction (third direction) where they are arranged. Specifically, if we compare the height of the heat dissipation fins 3b1 to 3b5 at any position in the front-rear direction, for example, the height of the front end 3bf (inside the dashed line) of each heat dissipation fin, the heights differ depending on the heat dissipation fin. Also, the positions of the ends of the multiple heat dissipation fins 3b1 to 3b5 of the third heat dissipation member 113b differ along the vertical direction where they are located on the side of the air cooling fan 111, depending on their position in the left-right direction. Specifically, if we compare the positions of the upper ends of the heat dissipation fins 3b1 to 3b5 at any position in the front-rear direction, for example, the positions of the upper ends of the front end 3bf (inside the dashed line) of each heat dissipation fin, the positions of the upper ends differ depending on the heat dissipation fin.

[0091] Furthermore, at least one of the multiple heat dissipation fins 3b1 to 3b5 of the third heat dissipation member 113b has a different length in the vertical direction depending on its position in the front-to-back direction. Also, at least one of the multiple heat dissipation fins 3b1 to 3b5 of the third heat dissipation member 113b has a different position of its end on the air cooling fan 111 side in the vertical direction depending on its position in the front-to-back direction. Specifically, looking at the heat dissipation fin 3b5, the position of its upper end 3bu (inside the dashed line) differs in the front-to-back direction, and it is concave from the center to the front in the front-to-back direction. The concave central part to the front of the heat dissipation fin 3b5 is below the blades of the air cooling fan 111, and is a position where the airflow is strong.

[0092] As described above, the imaging device 100 of this embodiment includes a first upper heat dissipation member 118bu in a first region 122 downstream of the airflow from the air-cooling fan 111, consisting of a plurality of heat dissipation fins 8bu1 to 8bu13 extending in the front-rear direction and arranged in the left-right direction, and a second heat dissipation member 119b consisting of a plurality of heat dissipation fins 9b1 to 9b10 extending in the left-right direction and arranged in the front-rear direction. The heat dissipation fins 8bu1 to 8bu13 of the first upper heat dissipation member 118bu are inclined to guide the airflow sent from the air-cooling fan 111 towards the exhaust port 110c, and the heat dissipation fins 9b1 to 9b10 of the second heat dissipation member 119b have a curved portion 9b that bends in the front-rear direction at the end opposite to the exhaust port 110c in the left-right direction. This configuration reduces the resistance (pressure loss) of the first upper heat dissipation member 118bu and the second heat dissipation member 119b, which are arranged intersecting the first region 122, to the airflow from the cooling fan 111. This suppresses noise that may be generated by the airflow passing between the heat dissipation fins 9b1 to 9b10 of the first upper heat dissipation member 118bu and the second heat dissipation member 119b. As a result, the quietness of the first upper heat dissipation member 118bu and the second heat dissipation member 119b is improved. In addition, the airflow passing through the first upper heat dissipation member 118bu and the second heat dissipation member 119b can be smoothly directed towards the exhaust port 110c, thereby improving cooling performance.

[0093] Furthermore, according to the imaging device 100, the curved portions 9bc provided on the heat dissipation fins 9b1 to 9b10 of the second heat dissipation member 119b are such that the curved portions 9bc of the heat dissipation fins 9b1 to 9b5, which are located on the side away from the first upper heat dissipation member 118bu, are curved toward the side (front) of the first upper heat dissipation member 118bu, while the curved portions 9bc of the heat dissipation fins 9b6 to 9b10, which are located on the side closer to the first upper heat dissipation member 118bu, are curved toward the side (rear) of the heat dissipation fins 9b1 to 9b5. With this configuration, the airflow from the cooling fan 111 can be dispersed into an airflow flowing toward the heat dissipation fins 8bu1 to 8bu4 of the first upper heat dissipation member 118bu and an airflow flowing toward the heat dissipation fins 9b6 to 9b10 of the second heat dissipation member 119b. This makes it possible to suppress noise that may be generated by the airflow passing between the heat dissipation fins 9b1 to 9b10 of the second heat dissipation member 119b.

[0094] Furthermore, the imaging device 100 includes a first flow straightening member 131 that suppresses the merging of airflow from the cooling fan 111 towards the exhaust port 110c via the first upper heat dissipation member 118bu and airflow from the cooling fan 111 towards the exhaust port 110c without passing through the first upper heat dissipation member 118bu. With this configuration, interference and vortex formation between the airflow passing through the first upper heat dissipation member 118bu and the airflow not passing through the first upper heat dissipation member 118bu can be suppressed. As a result, the airflow that has passed between the heat dissipation fins 8bu1 to 8bu13 of the first upper heat dissipation member 118bu can be smoothly guided to the exhaust port 110c, improving cooling performance and quietness.

[0095] Furthermore, the imaging device 100 includes a second rectifier member 132 that suppresses the merging of airflow that passes from the cooling fan 111 through the second heat dissipation member 119b and between the heat dissipation fins 8bu1 to 8bu4 of the first upper heat dissipation member 218bu, and airflow that passes from the cooling fan 111 without passing through the second heat dissipation member 119b and between the heat dissipation fins 8bu4 to 8bu13 of the first upper heat dissipation member 218bu. With this configuration, it is possible to suppress pressure loss caused by the collision of airflow that passes from the second heat dissipation member 119b and between the heat dissipation fins 8bu1 to 8bu4 of the first upper heat dissipation member 218bu, and airflow that passes without passing through the second heat dissipation member 119b and between the heat dissipation fins 8bu4 to 8bu13 of the first upper heat dissipation member 218bu. This allows the airflow that has passed between the heat dissipation fins 8bu1 to 8bu13 of the first upper heat dissipation member 118bu to be smoothly guided to the exhaust port 110c, thereby improving cooling performance and quietness.

[0096] Furthermore, in the imaging device 100, the heat dissipation fins 3b1 to 3b5 of the third heat dissipation member 113b have different lengths H1 along the vertical direction depending on their position in the left-right direction, and the positions of the ends h1 to h5 on the side opposite to the cooling fan 111 in the vertical direction are such that the heat dissipation fins closer to the first air intake port 110a are closer to the cooling fan 111. With this configuration, the pressure loss of the airflow passing between the heat dissipation fins 3b1 to 3b5 can be reduced, improving cooling performance and quietness.

[0097] Furthermore, in the imaging device 100, the heat dissipation fins 6b1 to 6b11 of the fourth heat dissipation member 116b have different lengths along the vertical direction depending on their position in the front-to-back direction, and the position of the end on the side of the cooling fan 111 in the vertical direction differs. Also, at least one of the heat dissipation fins 6b1 to 6b11 of the fourth heat dissipation member 116b has a different length along the vertical direction depending on its position in the left-to-right direction, and the position of the end on the side of the cooling fan 111 in the vertical direction differs. With this configuration, the pressure loss of the airflow passing between the heat dissipation fins 6b1 to 6b11 can be reduced, improving cooling performance and quietness.

[0098] Although various embodiments have been described above, it goes without saying that the present invention is not limited to these examples. It is clear to those skilled in the art that various modifications or alterations can be conceived within the scope of the claims, and these are also understood to naturally fall within the technical scope of the present invention. One example is its application to a cooling device. Furthermore, the components of the above embodiments may be combined arbitrarily without departing from the spirit of the invention.

[0099] This application is based on Japanese Patent Application No. 2024-165644 filed on September 24, 2024, the contents of which are incorporated by reference within this application.

[0100] 3b1-3b5, 6b1-6b11, 8bu1-8bu13, 8bd1-8bd13, 9b1-9b10 Heat dissipation fins h1-h5 End 3bf Front end 3bu, 6bu Upper end 6bl Left end 9bc Curved section 100 Imaging device 110 Housing 110a First intake port 110b Second intake port 110c Exhaust port 110d Rectifier member 111 Cooling fan 111F, 118N Dashed arrow 111p, 119p Center 111w Blade section 112 Recording section 112a Media storage section 112b, 117b Electronic components 112c Insertion port 113 Third heat sink 113a, 116a, 118a, 119a, 218a Base 113b Third heat dissipation member 114 Fifth heat sink 115 Main board 116 Fourth heat sink 116b Fourth heat dissipation member 117 Imaging unit 117a Image sensor 118, 218 First heat sink 118b First heat dissipation member 118bd First lower heat dissipation member 118bu, 218bu First upper heat dissipation member 119 Second heat sink 119b Second heat dissipation member 120 Lens 121 Cover 122 First region 123 Second region 131 First rectifier member 132 Second rectifier member

Claims

1. An imaging device comprising: a housing having an exhaust port; an air cooling mechanism provided inside the housing for generating an airflow along a first direction; a first heat dissipation member provided in a first region downstream of the air cooling mechanism inside the housing and extending along a second direction when viewed in the first direction; and a second heat dissipation member provided in the first region and extending along a third direction intersecting the second direction, wherein the exhaust port exhausts air along the third direction, the first heat dissipation member is inclined with respect to the third direction, and the second heat dissipation member has a curved surface at the end opposite to the exhaust port in the third direction.

2. An imaging device according to claim 1, wherein the first heat dissipation member is inclined in a direction that guides the airflow toward the exhaust port.

3. An imaging device according to claim 1, wherein the first heat dissipation member is a plurality of heat dissipation fins arranged in the third direction.

4. An imaging device according to claim 1, wherein the curved surface of the second heat dissipation member is curved in the second direction.

5. An imaging device according to claim 1, wherein the second heat dissipation member is a plurality of heat dissipation fins arranged in the second direction.

6. An imaging device according to claim 5, wherein the plurality of heat dissipation fins of the second heat dissipation member include heat dissipation fins whose curved surface is bent toward the first heat dissipation member.

7. An imaging device according to claim 6, wherein the plurality of heat dissipation fins of the second heat dissipation member include: a first heat dissipation fin whose curved surface is bent toward the first heat dissipation member; and a second heat dissipation fin provided between the first heat dissipation member and the first heat dissipation fin, whose curved surface is bent toward the first heat dissipation fin.

8. An imaging apparatus according to claim 1, comprising a first rectifier member provided in the first region for suppressing the merging of an airflow from the air cooling mechanism toward the exhaust port via the first heat dissipation member and an airflow from the air cooling mechanism toward the exhaust port without passing through the first heat dissipation member.

9. An imaging device according to claim 1, wherein the first heat dissipation member is a plurality of heat dissipation fins arranged in the third direction, and the imaging device comprises a second rectifier member provided in the first region for suppressing the merging of airflow that has passed from the air cooling mechanism through the second heat dissipation member and between the heat dissipation fins of the first heat dissipation member, and airflow that has passed from the air cooling mechanism through the heat dissipation fins of the first heat dissipation member without passing through the second heat dissipation member.

10. An imaging device according to claim 9, wherein the second rectifier member is made of the same material as the first heat dissipation member.

11. An imaging device according to claim 1, wherein the housing has an air intake port, the air intake port draws in air along the third direction, and is provided in a second region upstream of the airflow from the air cooling mechanism inside the housing and comprises a third heat dissipation member extending along the second direction, the third heat dissipation member comprises a plurality of heat dissipation fins arranged in the third direction, and the plurality of heat dissipation fins of the third heat dissipation member have different lengths along the first direction depending on their position in the third direction.

12. An imaging device according to claim 11, wherein the plurality of heat dissipation fins of the third heat dissipation member have different positions at the ends opposite to the air cooling mechanism in the first direction depending on their position in the third direction.

13. An imaging device according to claim 12, wherein the plurality of heat dissipation fins of the third heat dissipation member are such that the heat dissipation fins closer to the air intake in the third direction have an end in the first direction that is closer to the air cooling mechanism than the end of the heat dissipation fins that are closer to the air intake.

14. An imaging device according to claim 1, wherein the housing has an air intake port, the air intake port draws in air along the third direction, and is provided in a second region upstream of the airflow from the air cooling mechanism inside the housing, and comprises a fourth heat dissipation member extending along the third direction, the fourth heat dissipation member comprising a plurality of heat dissipation fins arranged in the second direction, and the plurality of heat dissipation fins of the fourth heat dissipation member having different lengths along the first direction depending on their position in the second direction.

15. An imaging device according to claim 14, wherein the position of the plurality of heat dissipation fins of the fourth heat dissipation member differs depending on the position in the second direction, with the end on the side of the air cooling mechanism in the first direction being different.

16. An imaging device according to claim 14, wherein at least one of the plurality of heat dissipation fins of the fourth heat dissipation member has a different length along the first direction depending on its position in the third direction.

17. An imaging device according to claim 16, wherein at least one of the plurality of heat dissipation fins of the fourth heat dissipation member has a different position at the end on the side of the air cooling mechanism in the first direction depending on its position in the third direction.

18. An imaging device according to any one of claims 1 to 17, wherein, in a view in the first direction, the center of the second heat dissipation member is located on the opposite side from the exhaust port with respect to the center of the air cooling mechanism.

19. An imaging device according to claim 18, wherein, when the direction of movement of the blade portion of the air cooling mechanism in the overlapping portion of the air cooling mechanism and the second heat dissipation member in the first direction is defined as the direction of movement, the first heat dissipation member is located on the side of the second heat dissipation member in the direction of movement in the second direction.

20. An imaging device according to claim 1, wherein the curved surface is formed by bending the end portion.

21. An imaging device comprising: a housing having an air intake port; an air cooling mechanism provided inside the housing for generating an airflow along a first direction; a third heat dissipation member provided in a second region inside the housing upstream of the airflow from the air cooling mechanism and extending along a second direction in a view in the first direction; and a fourth heat dissipation member provided in the second region and extending along a third direction intersecting the second direction, wherein the air intake port draws in air along the third direction, the third heat dissipation member is a plurality of heat dissipation fins arranged in the third direction, the plurality of heat dissipation fins of the third heat dissipation member have different lengths along the first direction depending on their position in the third direction, and the fourth heat dissipation member is a plurality of heat dissipation fins arranged in the second direction, the plurality of heat dissipation fins of the fourth heat dissipation member have different lengths along the first direction depending on their position in the second direction.

Images