JP7210166B2 - Imaging system - Google Patents

Description

The present invention relates to an image pickup system , and more particularly to an image pickup system having an image pickup device to which accessories such as a heat dissipation module can be attached and detached.

With imaging devices such as digital video cameras that can shoot high-resolution images such as 8K images, high frame rate (HFR) images such as 120P and 240P, high dynamic range (HDR) images, etc., the data rate of the images handled is It is huge. In such an imaging device, power consumption increases due to computation and storage processing of huge amounts of data, and the amount of heat generated increases with the increase in power consumption. It is necessary to suppress the temperature rise of

Electric fans, heat sinks, heat exhaust ducts, and the like are known as heat dissipation means built into imaging devices. However, when the heat dissipation means is incorporated in the imaging device, the heat dissipation means must be large in order to ensure sufficient heat dissipation performance as the amount of heat generated increases. There's a problem. In addition, since the heat dissipation means built into the imaging device cannot be removed at will by the user, even in situations where the temperature of the imaging device is difficult to rise, such as when shooting at low resolution or when the temperature of the operating environment is low. , it is not possible to use a compact imaging device.

Therefore, an imaging device is known in which a heat dissipation structure (for example, an electric fan, a heat sink, a heat exhaust duct, etc.) can be attached to and detached from the imaging device. For example, Patent Literature 1 discloses an imaging element cooling device that is detachable from the bottom surface of an imaging device. Patent Document 2 discloses a cooling device that is detachable from an image pickup device, sucks warm air inside the image pickup device, and effectively releases the heat. Patent Literature 3 discloses a configuration in which air warmed by heat generated by an imaging device is emitted toward an accessory shoe and then emitted from an external device connected to the accessory shoe. Patent Document 4 discloses an image pickup apparatus in which a lens unit incorporating a photographing lens and an image sensor is detachable from a camera body. Arrangements are disclosed for dissipating heat from a heat sink.

JP 2010-56995 A JP 2012-168446 A JP 2013-98620 A JP 2008-245144 A

However, with the techniques described in Patent Literatures 1 to 4, when the heat dissipation structure is not connected to the imaging device, heat radiation is insufficient and the temperature of the imaging device rises, degrading the performance of the imaging device. There is a problem of storage. In addition, in order to deal with the recent increase in the amount of heat generated by imaging devices, a compact heat dissipation module (accessory) with excellent heat dissipation performance is desired.

SUMMARY OF THE INVENTION An object of the present invention is to provide an imaging system capable of efficiently suppressing an increase in temperature of an imaging device.

An imaging system according to the present invention includes an imaging device, a heat dissipation module connected to the imaging device, and a rig connected to the imaging device and used when a user carries the rig on the shoulder , The imaging device includes a first heat-generating section arranged inside, a second heat-generating section arranged inside, and a first heat-transferring section exposed to the outside . Through a first heat radiating part that radiates heat transferred through a path, and a second heat transfer path that is exposed to the outside and generated in the second heat generating part and different from the first heat transfer path a second heat radiating part for radiating heat transferred through the heat radiating module , wherein the heat radiation module includes a first heat receiving part in contact with the first heat radiating part, and thermally connected to the first heat receiving part. and a heat sink for dissipating heat transferred from the first heat radiation part to the first heat receiving part, and the rig includes a pad part that contacts the user's shoulder and a user's hand to hold the heat sink. a holding portion, a second heat receiving portion in contact with the second heat radiating portion, thermally connected to the second heat receiving portion, and transmitted from the second heat radiating portion to the second heat receiving portion and a base for radiating heat to the outside air .

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to suppress a temperature rise of an imaging device efficiently.

1 is an exploded perspective view of a system camera according to a first embodiment; FIG. 1 is a perspective view showing a configuration example of a system camera in the first embodiment; FIG. 1 is an exploded perspective view of a heat dissipation module in the first embodiment; FIG. FIG. 4 is a cross-sectional view for explaining heat dissipation paths in the system camera in the first embodiment; FIG. 5 is a cross-sectional view taken along line AA shown in FIG. 4; FIG. 3 is an exploded perspective view of the camera body according to the first embodiment, with the exterior member hidden. 4 is a cross-sectional view for explaining the heat dissipation structure of the camera body in the first embodiment; FIG. FIG. 2 is a perspective view of the camera body in the first embodiment, viewed substantially from the bottom side; 4 is an exploded perspective view of the front unit of the camera body in the first embodiment; FIG. 4 is a cross-sectional view of the camera body in the first embodiment; FIG. It is a schematic diagram explaining the connection method of the camera main body and rig in 1st Embodiment. 1 is an exploded perspective view of a rig in the first embodiment; FIG. It is a partial sectional view of a rig and a perspective view of a base in the first embodiment. FIG. 4 is a diagram illustrating heat transfer paths in a state where a plurality of heat dissipation modules, battery packs and rigs are connected to the camera body in the first embodiment; FIG. 11 is an exploded perspective view of a system camera according to a second embodiment; FIG. 11 is an exploded perspective view of a system camera according to a third embodiment; FIG. 11 is an exploded perspective view of a system camera according to a fourth embodiment; FIG. 14 is a perspective view of a camera body and a heat dissipation module in a fourth embodiment; FIG. 14 is a cross-sectional view of a camera body and a heat dissipation module in a fourth embodiment; FIG. 11 is a cross-sectional view of a camera body and a rig in a fourth embodiment; FIG. 11 is a cross-sectional view of a camera body, a heat dissipation module and a rig in a fourth embodiment; FIG. 11 is an exploded perspective view of a system camera according to a fifth embodiment; FIG. 11 is a perspective view showing a usage mode of a system camera according to a fifth embodiment; FIG. 11 is a diagram for explaining heat transfer paths in a system camera according to a fifth embodiment; FIG. 11 is an exploded perspective view of a system camera according to a sixth embodiment; FIG. 11 is an exploded perspective view of a camera body in a sixth embodiment; FIG. 11 is a side view of a camera body and a heat dissipation module in a sixth embodiment; It is a figure explaining the connection of the camera main body and heat dissipation module in 6th Embodiment. FIG. 14A is a rear view and a cross-sectional view of a camera body in a sixth embodiment; FIG. 21 is a perspective view of a system camera according to a seventh embodiment; FIG. 21 is an exploded perspective view of a camera body in a seventh embodiment; FIG. 14A is a rear view and a cross-sectional view of a system camera according to a seventh embodiment; FIG. 13A is a rear view and a cross-sectional view of a camera body in a seventh embodiment; FIG. 14A is a side view and a cross-sectional view of a camera body in a seventh embodiment; FIG. 21 is a perspective view of a system camera according to an eighth embodiment; FIG. 21 is an exploded perspective view of a system camera according to an eighth embodiment; FIG. 21 is a rear view and cross-sectional view of a system camera according to an eighth embodiment; FIG. 14A is a side view and a cross-sectional view of a heat dissipation module according to an eighth embodiment; FIG. 22 is a perspective view showing a state in which the protection unit is connected to the camera body in the eighth embodiment; FIG. 21 is a perspective view of a protection unit in an eighth embodiment; FIG. 21 is a diagram for explaining heat transfer paths between a camera body and a protection unit in an eighth embodiment; FIG. 22 is a diagram showing another example of connection of the protection unit to the camera body in the eighth embodiment; FIG. 21 is a perspective view of a lens unit, a camera body, and a heat radiation module that constitute a system camera according to a ninth embodiment; FIG. 21 is an exploded perspective view of a system camera according to a ninth embodiment; FIG. 22 is a partial side view of a camera body in a ninth embodiment; FIG. 45B is a cross-sectional view taken along the line LL shown in FIG. 45(b). FIG. 22 is a partial rear view of the camera body in the ninth embodiment; FIG. 20 is an exploded perspective view of a heat dissipation module according to the ninth embodiment; FIG. 20 is a partial side view and cross-sectional view of a heat dissipation module according to a ninth embodiment; FIG. 20 is a rear view of a heat dissipation module according to the ninth embodiment; FIG. 21 is a cross-sectional view for explaining connection between a camera body and a heat radiation module in a ninth embodiment; FIG. 21 is a perspective view of a camera body and a heat dissipation module that constitute a system camera according to a tenth embodiment; FIG. 20 is an exploded perspective view of a heat dissipation module according to the tenth embodiment; FIG. 22 is a cross-sectional view for explaining the connection between the camera body and the heat radiation module in the tenth embodiment; FIG. 21 is a perspective view of a camera body and a heat radiation module that constitute a system camera according to an eleventh embodiment; FIG. 21 is an exploded perspective view of a heat dissipation module according to an eleventh embodiment; FIG. 22 is a side view for explaining the structure of the movable module and its surroundings in the heat dissipation module in the eleventh embodiment; FIG. 21 is a cross-sectional view illustrating connection between a camera body and a heat radiation module in an eleventh embodiment; FIG. 22 is a rear view of the eleventh embodiment in which the heat radiation module is connected to the camera body; 60 is a cross-sectional view taken along arrows N1-N1 and N2-N2 shown in FIG. 59; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of an imaging system according to the present invention will be described in detail with reference to the accompanying drawings. In the following description, illustrations and descriptions of portions that are not directly related to the present invention, that is, items that are not directly related to the transfer and heat dissipation of heat generated in the imaging device, will be omitted. Moreover, what embodied the imaging system based on this invention is called a "system camera."

<First Embodiment>
FIG. 1(a) is an exploded perspective view of the system camera 100 according to the first embodiment, viewed from substantially the front side (object side). FIG. 1B is an exploded perspective view of the system camera 100 viewed substantially from the rear side. 2(a) is a perspective view of the system camera 100 viewed substantially from the front side, and FIG. 2(b) is a perspective view of the system camera 100 viewed substantially from the rear side. FIG. 2(c) is an exploded perspective view of the system camera 100 with the heat radiation module 101 removed, viewed from the front side.

For convenience of explanation, a coordinate system consisting of mutually orthogonal X-, Y-, and Z-axes is defined as shown in FIG. The Z-axis is parallel to the imaging optical axis of the system camera 100, and the positive direction is the direction toward a subject (not shown). The Y-axis is parallel to the vertical direction when the Z-axis is parallel to the horizontal direction, and the upward direction is the positive direction. The X-axis is an axis perpendicular to the Y-axis and the Z-axis. Also, in the following description, the Z-axis positive direction side is referred to as the "front side", and the Z-axis negative direction side is referred to as the "rear side". In each unit constituting the system camera 100, the front surface is referred to as the "front surface," the rear surface as the "rear surface," the surface in the positive Y-axis direction as the "upper surface," and the surface in the negative Y-axis direction as the "upper surface." The two surfaces substantially orthogonal to the X-axis are called the "bottom surface" and the "side surfaces" respectively.

The system camera 100 has a camera body 102 (imaging device body), a lens unit 103 (interchangeable lens), a battery pack 104 (external power supply (battery module)), and a heat dissipation module 101, which are arranged in a Z direction as described below. It can be connected in the axial direction. The connection of each unit and each module constituting the system camera 100 means that each unit is mechanically connected so as to realize the function of each unit and each module. connected electrically or thermally. The camera body 102 and the lens unit 103 constitute an imaging device. The battery pack 104 and the heat dissipation module 101 are examples of accessories that can be attached to and detached from the camera body 102 . Therefore, as shown in FIGS. 2A and 2C, the system camera 100 can selectively take a state in which the heat dissipation module 101 is connected and a state in which the heat dissipation module 101 is not connected.

A lens mount 105 for connecting the lens unit 103 is provided on the front surface of the camera body 102, so that the lens unit 103 can be connected according to the photographing situation. A light beam incident on the camera body 102 through the lens unit 103 forms an image on the light receiving surface of an imaging sensor (not shown) built in the camera body 102, and the formed optical image is converted into a predetermined image signal by the imaging sensor. be. The rear surface of the camera body 102 is provided with an engagement recess 106 that engages with the heat dissipation module 101 and the battery pack 104 , and a battery terminal 107 that is an electrical contact portion for receiving power from the battery pack 104 .

First, the configuration for directly connecting the camera body 102 and the battery pack 104, indicated by an arrow 126 in FIG. 1B, will be described in detail. The battery pack 104 contains battery cells that can be repeatedly charged. The front surface of the battery pack 104 is provided with an engaging projection 108 that engages with the engaging recess 106 of the camera body 102, and a power supply terminal 109 that is an electrical contact for supplying power to the battery terminal 107. . The engaging concave portion 106 of the camera body 102 and the engaging convex portion 108 of the battery pack 104 have a female/male engaging structure in which a pair of substantially opposing fitting rails are arranged in a substantially V shape. Therefore, the camera main body 102 and the battery pack 104 are switched in mating relationship by sliding in the Y-axis direction, fitted by sliding in the negative Y-axis direction, and separated by sliding in the positive Y-axis direction.

The battery terminal 107 has a contact pin 110 projecting in the positive direction of the Y-axis. The power supply terminal 109 has a contact hole (not shown) that is formed parallel to the Y-axis direction and can be fitted with the contact pin 110 . The contact pin 110 and the contact hole of the power supply terminal 109 are inserted/removed according to the engagement/separation between the camera body 102 and the battery pack 104 in the Y-axis direction. When the front surface of the battery pack 104 is slid along the back surface of the camera body 102 in the negative direction of the Y axis, the engagement convex portion 108 and the engagement concave portion 106 are engaged, and the battery terminal 107 is inserted into the contact hole of the power supply terminal 109 . It is inserted and an electrical connection is made.

A lock mechanism (not shown) for restricting the sliding operation of the battery pack 104 with respect to the camera body 102 is provided in the vicinity of the engagement protrusion 108 with respect to the engagement recess 106 . When the position of the battery pack 104 is fixed by the lock mechanism, the connection of the battery pack 104 to the camera body 102 is completed and the state shown in FIG. becomes.

The lock mechanism that regulates the sliding motion of the battery pack 104 can be unlocked by operating the unlock knob 111 provided on the camera body 102 . When the lock release knob 111 is pushed, the lock mechanism operates in the regulation release direction, and the battery pack 104 can be slid in the Y-axis positive direction. When the battery pack 104 is slid in the positive direction of the Y-axis, the battery terminal 107 is pulled out from the power supply terminal 109 and the engaging concave portion 106 and the engaging convex portion 108 are separated to remove the battery pack 104 from the camera body 102 .

Next, the system camera 100 with the heat dissipation module 101 connected will be described. The heat dissipation module 101 is used while being arranged between the camera body 102 and the battery pack 104 . For example, when the power consumption of the camera body 102 is large and there is concern about an increase in the amount of heat generated when used in a shooting mode, or when the camera body 102 is used in a usage environment in which the margin for temperature rise due to heat generation is small relative to the guaranteed temperature of the camera body 102 , the natural heat dissipation from the camera body 102 is insufficient. The heat dissipation module 101 enhances the ability to dissipate heat generated in the camera body 102 and suppresses an increase in internal temperature of the camera body 102 .

The heat dissipation module 101 is connected (fastened and fixed) to the camera body 102 by four bolts 112 (partially not shown) inserted through holes 113 provided at the four corners. A heat receiving portion 116 , an electrical contact portion 118 and recesses 119 and 120 are provided on the front surface 114 of the heat dissipation module 101 . When the heat dissipation module 101 is connected to the camera body 102, the heat receiving portion 116 abuts on a rear heat dissipation portion 115, which is a first heat dissipation portion provided on the back surface of the camera body 102, and the electrical contact portion 118 is connected to the camera body. It makes contact with extended contact pads 117 provided on 102 . The concave portions 119 and 120 are portions for avoiding interference with the engaging concave portions 106 and the battery terminals 107 of the camera body 102 when the heat dissipation module 101 is connected to the camera body 102 .

On the rear surface 121 of the heat dissipation module 101, an engaging recess 122 and a battery terminal 123 equivalent to the engaging recess 106 and the battery terminal 107 provided on the camera body 102 are provided to enable connection of the battery pack 104. It is The engagement recess 122 may be the same component as the engagement recess 106 , or may have a different structure as long as compatibility with the engagement protrusion 108 of the battery pack 104 can be maintained. The battery terminal 123 may have the same structure as the battery terminal 107, or may have a different structure as long as a mechanically and electrically compatible connection with the power supply terminal 109 of the battery pack 104 is possible. I do not care. Each terminal of the electrical contact portion 118 is electrically connected to the contact pin 124 of the battery terminal 123 inside the heat dissipation module 101 . Further, inside the camera body 102 , each pad of the extension contact pads 117 is electrically connected to the contact pins 110 of the battery terminals 107 .

The connection of the battery pack 104 to the heat dissipation module 101, indicated by an arrow 127 in FIG. That is, by sliding the battery pack 104 in the Y-axis negative direction, the engaging projection 108 is engaged with the engaging recess 122, and the battery terminal 123 is inserted into the power supply terminal 109 to be electrically connected. The battery pack 104 is fixed to the heat dissipation module 101 in a state where the sliding movement is restricted by a lock mechanism (not shown) provided on the heat dissipation module 101 in the same manner as the lock mechanism provided on the camera body 102 . be. The battery pack 104 can be removed from the heat radiation module 101 by operating the lock release knob 125 provided on the heat radiation module 101 to release the slide regulation of the battery pack 104 .

The power feeding route from the battery pack 104 to the camera body 102 in a state where the battery pack 104 is connected to the camera body 102 via the heat dissipation module 101 is as follows. That is, power is supplied from the power supply terminal 109 of the battery pack 104 to the camera body 102 via the battery terminal 123 of the heat dissipation module 101 , the internal conducting path (not shown), the electrical contact portion 118 , and the extended contact pad 117 of the camera body 102 . will be Thus, the system camera 100 can be driven by supplying power from the battery pack 104 to the camera body 102 regardless of whether the heat dissipation module 101 is connected or not.

Next, the configuration of the heat dissipation module 101 will be described in more detail. FIG. 3A is an exploded perspective view of the heat dissipation module 101 viewed substantially from the front side. FIG. 3B is an exploded perspective view of the heat dissipation module 101 viewed substantially from the rear side. The heat dissipation module 101 has a structure in which the appearance is constituted by a front case 301 on the front side and a rear case 302 on the back side, and a heat sink 303 is housed inside. The front case 301 is provided with an electrical contact portion 118 and an opening portion 304 for exposing the heat receiving portion 116 which is one surface of the heat sink 303 . The rear case 302 is provided with an engaging recess 122 , a battery terminal 123 and an unlocking knob 125 . The electrical contact portion 118 and the contact pin 124 of the battery terminal 123 are electrically connected inside the heat dissipation module 101 by an electric wire, a flexible printed circuit board, or the like (not shown).

The heat sink 303 is a heat dissipating member molded using a material with excellent thermal conductivity such as aluminum die casting. The heat sink 303 has a heat receiving portion 116 exposed to the exterior of the heat dissipation module 101 and a large number of heat dissipating fins 306 erected on the opposite side of the heat receiving portion 116 (Z-axis negative direction side). A duct-shaped air flow path is formed around the radiation fins 306 except for the first ventilation port 307 and the second ventilation port 308 by shielding with the partition wall 309 and the cover member 310 . The first ventilation port 307 is provided toward the side surface (X-axis direction) of the heat dissipation module 101, and the second ventilation port 308 is provided toward the top surface of the heat dissipation module 101 (positive Y-axis direction). there is

A slit-shaped opening 311 is provided at a position corresponding to the first vent 307 in the front case 301 . A lid cover 313 having a slit-shaped opening 312 is attached to the front case 301 so as to correspond to the position of the second vent 308 . Although the lid cover 313 is attached to the front case 301 in this embodiment, the slit-like opening 312 may be formed integrally with the front case 301 or the rear case 302 . Also, the slit-like opening 311 is formed integrally with the front case 301 , but may be formed integrally with the rear case 302 .

The heat sink 303 is biased by a biasing spring 314 toward the front case 301, that is, in the positive direction of the Z axis. Accordingly, in a no-load state in which the heat radiation module 101 is not attached to the camera body 102, the heat receiving portion 116 protrudes from the front surface 114 by a predetermined amount (predetermined length). In other words, when the heat dissipation module 101 is connected to the camera body 102, the heat receiving part 116 is pressed to the rear side by the back heat dissipation part 115, and the heat receiving part 116 and the back heat dissipation part 115 are thereby brought into close contact with each other with a constant pressing force. do. The front case 301 and the rear case 302 are fastened with fastening screws 305 in a state in which the above-described various parts are incorporated in the space formed by the front case 301 and the rear case 302, whereby the heat dissipation module 101 is assembled. It is configured.

FIG. 4 is a cross-sectional view for explaining heat transfer paths (heat radiation paths) in the system camera 100 in which the heat radiation module 101 and the battery pack 104 are connected to the camera body 102. As shown in FIG. In addition, in FIG. 4, illustration of members unrelated to heat dissipation is omitted. 5 is a cross-sectional view taken along line AA shown in FIG. 4. FIG. In FIG. 4, an arrow 171 indicates a heat transfer path, and an arrow 172 indicates a power supply path from the battery pack 104 to the camera main body 102 .

On the rear surface of the camera body 102, a rear heat dissipation portion 115 for transmitting heat generated inside the camera body 102 to the heat dissipation module 101 is arranged so as to be exposed to the outside. It is desirable that the rear heat radiation part 115 is made of a material having excellent thermal conductivity, such as copper or aluminum. Inside the camera body 102, an image sensor, a CPU (image processing engine) that processes image signals at high speed, a storage processing unit that stores a large amount of image data at high speed, and various heat generating units (heat generating sources) such as storage media. A heat transfer path to the back heat radiation portion 115 is formed by a heat conductive member. Various well-known techniques are used for the materials, structures, and the like that form heat transfer paths from various heat generating portions to the rear heat radiating portion 115, and the description thereof will be omitted here.

Heat generated by various heat-generating portions inside the camera body 102 is transmitted to the back heat radiation portion 115 and then to the heat receiving portion 116 in contact with the back heat radiation portion 115 . In the present embodiment, the rear heat dissipation portion 115 is configured to be exposed only to a portion of the rear surface of the camera body 102. However, the shape of the rear heat dissipation portion 115 is limited to the extent that it can come into contact with the heat receiving portion 116. Absent. For example, the back heat radiation part 115 may be exposed in a wider range on the back of the camera body 102, or conversely, may be exposed in a narrower range as long as an appropriate heat radiation performance is obtained.

In this embodiment, when the heat radiation module 101 is connected to the camera body 102, the heat receiving portion 116 is pressed against the rear heat radiation portion 115 by the action of the biasing spring 314 that presses the heat sink 303 toward the camera body 102. in contact with pressure. Thereby, the contact thermal resistance between the heat receiving portion 116 and the rear heat radiating portion 115 can be reduced. The heat transmitted to the heat receiving portion 116 is diffused throughout the heat sink 303, and the radiation fins 306 exchange heat with the surrounding air. The air warmed by the heat radiation fins 306 flows toward the top surface of the heat radiation module 101 (positive Y-axis direction) due to the chimney effect as indicated by an arrow 351 in FIG. ) to the outside.

When the heated air is discharged to the outside, the inside of the heat dissipation module 101 becomes a negative pressure, and the air flows from the inside of the heat dissipation module 101 from the outside through the slit-shaped opening 311 so as to replace the air discharged to the outside. into as indicated by arrow 352 in FIG. The air that has flowed into the heat dissipation module 101 flows in the direction of the arrow 351, receives heat from the heat dissipation fins 306, is warmed, and is released to the outside through the slit-shaped openings 312 as described above.

As described above, when the heat radiation module 101 is connected to the camera body 102 , the heat generated in the camera body 102 is radiated to the outside by the heat radiation module 101 . In other words, the heat dissipation capability of the camera body 102 is enhanced by the heat sink 303 of the heat dissipation module 101, so that even if the camera body 102 is used in a high power consumption operation mode, it is possible to cope with the heat generated. . In addition, the heat radiation module 101 has engagement structures for the camera body 102 and the battery pack 104 on the front surface and the back surface, respectively, and is configured to be able to be inserted and connected between the two. It does not change the connectivity of the pack 104 . As a result, it is possible to use the system camera 100 with an optimum heat dissipation configuration according to the usage conditions.

So far, the heat dissipation structure in which the heat dissipation module 101 is connected to the camera body 102 has been mainly described. On the other hand, as shown in FIG. 2, the system camera 100 can be used in a configuration in which the battery pack 104 is directly connected to the camera body 102 without connecting the heat radiation module 101 . If the heat dissipation module 101 is not connected, the heat generated inside the camera body 102 may cause the internal temperature of the camera body 102 and the temperature of the exterior member to rise. Therefore, in order to suppress the temperature rise of the camera body 102, a heat dissipation structure for the camera body 102 alone is important. Therefore, next, the heat dissipation structure of the camera body 102 alone will be described.

FIG. 6 is an exploded perspective view in which an exterior member (exterior cover) of the camera body 102 is hidden. The camera body 102 includes a lens mount 105, an ND unit 801, an image sensor circuit board 802, a board holding member 804, a main board 803, a main heat sink 807, and a back heat sink 810, which are arranged in order from the front side to the back side. and a rear heat dissipation part 115 . In the ND unit 801, ND filters of a plurality of densities can be electrically replaced. An imaging device circuit board 802 (hereinafter referred to as "sub-board 802") mounts an imaging sensor (not shown).

The main board 803 is held by a board holding member 804 . Various electronic components for controlling the camera body 102 and accessories connected to the camera body 102 are mounted on the main board 803, and a heating element 805 that generates heat particularly during shooting is mounted. The heating element 805 includes, for example, a semiconductor device (image processing engine) that performs image processing. Since the performance of the heating element 805 deteriorates as the temperature rises, the heat generated by the heating element 805 must be released to the outside. Therefore, a heat radiation sheet 806 is closely attached to the package surface of the heat generating element 805, and the heat radiation sheet 806 is closely attached to the main heat radiation plate 807 disposed on the rear side thereof. As a result, the heat generated by the heating element 805 is transferred to the main heat dissipation plate 807 through the heat dissipation sheet 806 . A material having a high thermal conductivity such as aluminum or copper is preferably used for the main heat sink 807 .

The main heat dissipation plate 807 has a first heat dissipation surface 808 that transfers heat to the back side and a second heat dissipation surface 809 that transfers heat to the side surface (positive direction of the X axis). A rear heat dissipation portion 115 is arranged on the rear side of the main heat dissipation plate 807 via a rear heat dissipation sheet 810 connected to the first heat dissipation surface 808 . A side heat radiation plate 812 is arranged on the positive direction side of the X-axis of the main heat radiation plate 807 with a side heat radiation sheet 811 connected to the second heat radiation surface 809 interposed therebetween.

FIG. 7 is a cross-sectional view for explaining the heat dissipation structure of the camera body 102. As shown in FIG. The heat generated by the heating element 805 mounted on the main board 803 is transmitted to the main heat radiation plate 807 via the heat radiation sheet 806 . A conduction path of heat transferred to the main heat radiation plate 807 branches into a first path toward the first heat radiation surface 808 and a second path toward the second heat radiation surface 809 . The heat transmitted to the first heat radiation surface 808 through the first path is transmitted to the back heat radiation portion 115 via the back heat radiation sheet 810 . At this time, when the heat radiation module 101 is connected to the camera body 102, the heat transmitted to the rear heat radiation section 115 is mainly transmitted to the heat radiation module 101 and radiated as described above. On the other hand, when the heat radiation module 101 is not connected to the camera body 102, the heat transferred to the rear heat radiation section 115 is radiated from the rear heat radiation section 115 to the outside air. The heat transmitted to the second heat radiation surface 809 through the second path is transmitted to the side heat radiation plate 812 via the side heat radiation sheet 811, and further transmitted to the exterior member functioning as the second heat radiation section. Heat is radiated to the outside air.

By the way, if the heat dissipation module 101 is not connected to the camera body 102, the camera body 102 cannot dissipate heat by forced air cooling, so the internal temperature must be lowered by natural heat dissipation. On the other hand, the camera body 102 is configured in consideration of the connection of the heat dissipation module 101 so that the temperature of the rear heat dissipation portion 115 rises in order to conduct heat transfer to the heat dissipation module 101 . Therefore, when the battery pack 104 is connected without the heat dissipation module 101 being connected, there is concern that the temperature of the battery pack 104 may rise due to heat dissipation from the rear heat dissipation portion 115 .

In consideration of such circumstances, in the camera body 102, the heat transfer path is branched between the back heat radiating portion 115 and the heat generating portion, and the heat is transferred to the side heat radiating plate 812. It suppresses the temperature rise and the rise of the internal temperature of the camera body 102 . As a result, even if the heat dissipation module 101 is not connected, an increase in the internal temperature of the camera body 102 can be suppressed by natural heat dissipation in a shooting mode with low power consumption. Also, it is possible to suppress the temperature rise of the heating element 805 mounted on the main substrate 803 .

Another heat transfer path provided in the camera body 102 will now be described. FIG. 8 is a perspective view of the camera body 102 viewed from substantially the bottom side. As described above, the rear side of the camera body 102 is provided with the rear heat dissipation portion 115 for dissipating heat mainly generated on the main substrate 803. It is possible to attach and detach the heat dissipation module 101 capable of A bottom heat radiation portion 851 serving as a third heat radiation portion is provided on the bottom side of the camera body 102, and a heat radiation module (not shown) can be attached and detached. An imaging sensor (not shown) mounted on the sub-board 802 is one of the heat-generating parts that generate heat during shooting, and the bottom heat radiation part 851 mainly dissipates heat generated by the imaging sensor (heat of the sub-board 802). It has the function to Although not shown, a handle and a display device can be attached and detached from the top surface of the camera body 102, and a grip and a display device (EVF, etc.) can be attached and detached from the side surface. Therefore, the camera body 102 is configured so that the heat radiation module can be attached to and detached from the rear surface and the bottom surface. A bottom heat radiating portion 851 arranged on the bottom surface of the camera body 102 has two rig mounting portions 852 provided at predetermined intervals in the X-axis direction. The rig attachment portion 852 is a female thread that can be tightened from the outside.

FIG. 9 is an exploded perspective view of the front unit 400 of the camera body 102. FIG. FIG. 10 is a cross-sectional view of the camera body 102. As shown in FIG. The front unit 400 includes a lens mount 105, an ND unit 801, a sub-board 802, a sensor plate 403, a sensor heat dissipation plate 406, a sensor heat dissipation sheet 407, and a front base 404 for fixing them. The imaging sensor 402 is mounted on the sub-board 802 . A sensor plate 403 is arranged on the rear surface of the sub-board 802 , and the sub-board 802 is fixed to the sensor plate 403 . A sensor plate 403 is fixed to the front base 404 .

It is known that the imaging sensor 402 generates heat during shooting, and its performance deteriorates when the temperature rises. Therefore, the heat generated by the imaging sensor 402 must be quickly dissipated to the outside. Therefore, a hole is formed in the back side of the sub-board 802, and a hole is also formed in the sensor plate 403 so as to correspond to this hole. As a result, the imaging sensor 402 is exposed from the rear side while the sub-board 802 and the sensor plate 403 are assembled. A sensor heat dissipation sheet 407 is arranged so as to be in close contact with the exposed portion on the back side of the imaging sensor 402 , and further the sensor heat dissipation sheet 407 is arranged in close contact with the sensor heat dissipation plate 406 . As a result, the heat generated by the imaging sensor 402 is efficiently transferred to the sensor radiator plate 406 .

The heat transferred to the sensor heat sink 406 is transferred to the bottom heat transfer surface 408 . A bottom heat radiation sheet 409 is arranged in close contact with the bottom side of the bottom heat transfer surface 408, and the bottom heat radiation sheet 409 is in close contact with a bottom heat radiation portion 851 arranged on the bottom side. Thus, the heat generated by the imaging sensor 402 is transmitted to the bottom heat radiation portion 851 via the bottom heat transfer surface 408 of the sensor heat radiation plate 406 and the bottom heat radiation sheet 409 . In addition, when the heat radiation module is not connected to the bottom heat radiation part 851, heat is radiated from the bottom heat radiation part 851 to the outside air. On the other hand, when a heat dissipation module is connected to the bottom heat dissipation part 851, heat is radiated to the outside air through the connected heat dissipation module.

In this way, the camera body 102 having a plurality of heat-generating portions inside has a configuration in which a heat radiation module can be connected to each heat-generating portion. As a result, for example, when the imaging sensor 402 is to be efficiently cooled, the heat dissipation module is connected to the bottom heat dissipation part 851, and when the main substrate 803 is to be cooled, the heat dissipation module is connected to the back face heat dissipation part 115, thereby efficiently dissipating heat. can be done. At that time, it becomes possible to use the system camera 100 in an optimum form in consideration of the shooting mode, usage environment, power consumption, and the like.

Further, by connecting heat radiation modules to both the back heat radiation portion 115 and the bottom heat radiation portion 851, the effect of suppressing the temperature rise of the camera body 102 can be further enhanced. Since the camera body 102 is provided with a plurality of heat transfer paths to the outside air, the internal temperature of the camera body 102 rises even when the system camera 100 is used without a heat dissipation module connected. It has a difficult configuration.

Next, a form in which a rig as an example of a heat dissipation module is connected to the bottom portion (bottom heat dissipation portion 851) of the camera body 102 will be described. FIG. 11 is a schematic diagram illustrating a method of connecting the rig 500 to the camera body 102. As shown in FIG. The rig 500 is a module connected to the bottom side of the camera body 102, and is used when the system camera 100 is carried on the shoulder and photographed. By placing the rig 500 with the system camera 100 on the shoulder, the user can stably hold the system camera 100 while the burden on the shoulder is reduced.

12 is an exploded perspective view of rig 500. FIG. The rig 500 is composed of a base 501 , a pad portion 502 and a grip portion 503 . The base 501 is a base to which various members constituting the rig 500 are attached, has a strong structure, and is made of metal, for example. The pad part 502 is a member that abuts on the user's shoulder when the rig 500 is in use, is provided on the lower side of the base 501, and has a surface made of a material such as polyethylene foam that has elasticity and heat insulation. It consists of a metal frame. The pad section 502 is fixed to the base 501 by a pad section fixing screw 504 . Note that the pad portion 502 is slidable in the Z-axis direction with respect to the base 501 and can be fixed at an arbitrary position with respect to the base 501 . A known technique can be used for the configuration for moving the fixed position of the pad section 502 in the Z-axis direction, and detailed description thereof will be omitted here.

The grip portion 503 is a rod-shaped metal member fixed to both side surfaces of the base 501 and has high strength. A grip 503a, which is the opposite side of the fixing portion to the base 501 in the grip portion 503, is subjected to anti-slip processing or the like so that the user can easily grip it by hand. The user can shoot while gripping the grip 503a, and can hold the system camera 100 stably by firmly gripping the grip 503a at two locations.

FIG. 13(a) is a partial cross-sectional view showing a state where the pad section 502 is attached to the base 501. FIG. The base 501 is integrally formed with a convex fixing portion 509 that is convex in the Y-axis negative direction. The pad section 502 is fixed to the base 501 by fastening the pad section fixing screw 504 to the convex fixing section 509 while sandwiching the pad section 502 . At this time, the base 501 and the pad portion 502 are in contact with each other at the convex fixed portion 509, but a gap portion 510 (clearance, space) is formed in the Y-axis direction at other portions.

The pad portion 502 receives the weight of the system camera 100 during shooting, and the elastic portion near the surface made of an elastic material is elastically deformed. maintains its shape within a certain range. The bottom surface of the pad portion 502 has an arcuate concave shape when viewed from the X-axis direction as shown in FIG. 13(a). This concave shape is ergonomically designed so that it comes into contact with the user's shoulder in a natural way, so that the system camera 100 can be stably held.

FIG. 13(b) is a perspective view showing the overall configuration of the base 501. As shown in FIG. The base 501 has an elongated opening 505 opening in the Y-axis direction with the Z-axis direction as the longitudinal direction. is provided. On the Z-axis positive direction side of the heat receiving portion 506, a pair of elongated holes 507 whose longitudinal direction is the Z-axis direction are provided on both sides in the X-axis direction so as to be symmetrical in the X-axis direction.

The heat receiving portion 506 is made of metal with high thermal conductivity such as aluminum. The heat receiving portion 506 may be molded integrally with the front portion 511 of the base 501 (the portion on the Z-axis positive direction side to which the grip portion 503 is coupled), or may be a component separate from the front portion 511 . may Since the heat receiving portion 506 is fastened to the front portion 511 , heat can be easily transferred to and received from the front portion 511 . Two heat receiving portions 506 provided on both sides of the opening 505 in the X-axis direction are provided with rig convex portions 508 projecting in the positive direction of the Y-axis. The rig convex portion 508 is movable in the Z-axis direction and can be fixed at any position in the Z-axis direction. A well-known technique can be used for the mechanism for moving the rig convex portion 508 in the Z-axis direction, so detailed illustration and description of the mechanism are omitted. Also, the details of the function of the rig convex portion 508 will be described later.

When the rig 500 is attached to the camera body 102, a rig fixing screw (not shown) is passed through the long hole 507 and screwed into the rig attachment portion 852 provided on the bottom surface of the camera body 102 to sandwich the base 501. conclude with At this time, since the longitudinal direction of the long hole 507 is the Z-axis direction, the mounting position of the rig 500 with respect to the camera body 102 in the Z-axis direction can be adjusted within the range of the length of the long hole 507 in the Z-axis direction. can.

When the rig 500 is attached to the camera body 102, the heat receiving portion 506 of the rig 500 and the bottom heat radiation portion 851 of the camera body 102 are in contact with each other. The structures of the heat receiving portion 506 and the bottom heat radiating portion 851 are not limited as long as they can be reliably brought into contact with each other. For example, one or both of the heat-receiving portion 506 and the bottom heat-radiating portion 851 may have a shape that is more convex than the surroundings. Part of the heat generated inside the camera body 102 due to the shooting operation or the like is transmitted to the bottom heat radiation portion 851, then to the heat receiving portion 506 of the base 501 that is in contact with the bottom heat radiation portion 851, and then to the entire base 501. , and the heat is radiated from the surface of the base 501 to the outside air. Thereby, an increase in the internal temperature of the camera body 102 can be suppressed.

When photographing with the system camera 100 with the rig 500 connected, the user is only in contact with the rig 500 at the pad portion 502 and is not in contact with the base 501 . Since the portion of the pad portion 502 that is in contact with the user is made of an elastic member having heat insulation such as foamed polyethylene, even if the surface temperature of the base 501 rises, the pad portion 502 does not reach the user. Heat transfer is suppressed. Therefore, the user can be prevented from feeling uncomfortable during the shooting due to the heat from the system camera 100 and the rig 500 even when shooting for a long time.

Also, the mounting position of the rig 500 with respect to the camera body 102 can be adjusted in the Z-axis direction, and the mounting position of the pad section 502 with respect to the base 501 can also be adjusted in the Z-axis direction. Therefore, even when various accessories are connected to the rear side of the camera body 102 , the pad section 502 can always be attached to a position directly below the center of gravity of the system camera 100 . As a result, the user can stably support the system camera 100 on the shoulder, and the burden on the user during long-time shooting can be reduced.

FIG. 14A is a diagram illustrating heat transfer paths in a state in which a plurality of heat dissipation modules 520, battery packs 104, and rigs 500 are attached to the camera body 102. FIG. FIG. 14B is a cross-sectional view illustrating heat transfer paths in the heat dissipation module 520. FIG. In addition, in FIG. 14A, the rig 500 is shown in the YZ cross section, and the others are shown in the side view.

As shown in FIG. 14B, the heat dissipation module 520 incorporates a heat sink having a plurality of heat dissipation fins 522 extending in the Y-axis direction. A first ventilation port 523 is formed at the Y-axis negative direction end (bottom surface) of the heat dissipation module 520, and a second ventilation port 524 is formed at the Y-axis positive direction end (top surface). The first vent 523 and the second vent 524 have a slit shape communicating with the outside. As in the heat dissipation module 101 , the air warmed by the heat dissipation fins 522 is discharged from the second vent 524 by the chimney effect, which creates a negative pressure inside the heat dissipation module 520 and causes the air to flow through the first vent 523 . Air (outside air) flows into the heat dissipation module 520 .

The heat dissipation module 520 has connection compatibility in the Z-axis direction. Then, as shown in FIG. 14A, a plurality of heat radiation modules 520 are sequentially connected (coupled) to the camera body 102 in the Z-axis direction, and the battery pack 104 is further connected. Power supply is also possible. That is, similarly to the heat dissipation module 101, the heat dissipation module 520 has power supply terminals on each of the mounting surface on the Z-axis positive direction side and the mounting surface on the Z-axis negative direction side. It has By connecting a plurality of heat dissipation modules 520, high heat dissipation performance can be obtained, and even if the amount of heat generated inside the camera body 102 increases, it is possible to suppress an increase in internal temperature.

In particular, the camera body 102 has only the minimum functions because it is premised on building a system, and the body size is generally designed to be as small as possible. Therefore, in a system in which the rig 500 and the heat dissipation module 520 are connected at the same time, the rig 500 is set to be significantly longer than the front-rear length (Z-axis direction length) of the camera body 102 . The rig 500 protrudes from the axial negative direction side. In this state, when the heat dissipation module 520 is connected to the back side of the camera body 102, the bottom side of the heat dissipation module 520, that is, the bottom surface (surface on the Y-axis negative direction side) provided with the first air vent 523 is placed under the rig. 500 is covered with a base 501 .

Therefore, as described with reference to FIG. 13, the base 501 and the pad portion 502 of the rig 500 are in contact with each other only at the convex fixing portion 509, and the gap 510 is provided on the Y-axis negative direction side of the base 501. is provided. Also, the opening 505 in the base 501 is provided at a position facing the first vent 523 of the heat dissipation module 520 in the Y direction, and the gap 510 and the opening 505 communicate with each other. Furthermore, as shown in FIG. 14( a ), a space is formed between the base 501 and the pad portion 502 in the Z-axis direction, and this space communicates with the gap 510 . Therefore, as indicated by arrows 551 and 552 in FIG. Flow can be generated without a hitch.

Furthermore, the fixed position of the rig 500 with respect to the camera body 102 can be moved in the Z-axis direction, and the opening 505 has a sufficient length with the Z-axis direction as the longitudinal direction. Therefore, even when the camera body 102 to which a plurality of heat dissipation modules 520 are connected is attached to the rig 500, if a part of the opening 505 is exposed on the upper surface of the base 501, the opening can be opened from this opening. Air is allowed to enter first vent 523 through portion 505 . Therefore, since the inflow of air into each heat dissipation module 520 is not blocked, the heat dissipation performance can be ensured.

<Second embodiment>
In the second embodiment, a heat dissipation module according to a modification of the heat dissipation module 101 explained in the first embodiment will be explained. FIG. 15(a) is an exploded perspective view of the system camera 600 according to the second embodiment, viewed substantially from the front side. FIG. 15(b) is an exploded perspective view of the system camera 600 viewed substantially from the rear side.

A system camera 600 has a camera body 102 , a lens unit 103 , a battery pack 104 and a heat dissipation module 601 . Among the constituent elements of the system camera 600, those that are the same as those of the system camera 100 according to the first embodiment (the camera body 102, the lens unit 103, and the battery pack 104) will be given the same reference numerals and descriptions will be given. omitted. Further, among the components of the heat radiation module 601, the same components as those of the heat radiation module 101 described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

A front case 602 of the heat dissipation module 601 is provided with an engaging convex portion 603 and a power supply terminal 604 corresponding to the engaging concave portion 106 and the battery terminal 107 of the camera body 102, respectively. The same parts as the engaging protrusions 108 of the battery pack 104 may be used for the engaging protrusions 603, or a different structure may be employed as long as compatibility with the engaging recesses 106 is maintained. I do not care. For the power supply terminal 604, the same parts as the power supply terminal 109 of the battery pack 104 may be used, or a different structure may be adopted as long as compatibility with the battery terminal 107 in terms of mechanical and electrical connection is maintained. I don't mind.

The rear case 605 of the heat dissipation module 601 is provided with an engaging recess 122 and a battery terminal 123 in the same manner as the heat dissipation module 101 . Inside the heat dissipation module 601 , each terminal of the power supply terminal 604 is electrically connected to the contact pin 124 of the battery terminal 123 .

In this manner, the heat dissipation module 601 employs the same structure as the engagement structure of the battery pack 104 with respect to the camera body 102 as the engagement structure with the camera body 102 . Therefore, the heat radiation module 601 does not need to be connected to the camera body 102 with the four bolts 112, and the heat radiation module 601 and the battery pack 104 can be attached to and detached from the camera body 102 by the same operation. Therefore, it is possible to improve the attachment/detachment operability, and for example, it is possible to quickly and easily attach/detach the heat dissipation module 601 at a shooting site or the like. The configuration of the engagement interface that makes the heat radiation module detachable from the system camera is not particularly limited. For example, if a configuration using a general-purpose interface is adopted, various system cameras can share the heat radiation module. It becomes possible to

<Third Embodiment>
FIG. 16(a) is an exploded perspective view of the system camera 700 according to the third embodiment as seen from substantially the front side. FIG. 16(b) is an exploded perspective view of the system camera 700 viewed substantially from the rear side. A system camera 700 has a camera body 702 , a lens unit 103 , a recorder module 703 , a battery adapter module 704 , a battery pack 104 and a heat dissipation module 701 . Among the constituent elements of the system camera 700, those that are the same as those of the system camera 100 according to the first embodiment (the lens unit 103 and the battery pack 104) are assigned the same reference numerals, and description thereof is omitted. Among the components of the camera body 702 and the heat radiation module 701, the same components as those of the camera body 102 and the heat radiation module 101 described in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

The configuration of the front side and the inside of the camera body 702 conforms to the configuration of the front side and the inside of the camera body 102, so the description thereof is omitted. A common engagement interface is provided on the rear side of the camera body 702 . The common engagement interface is a compatible inter-module connection mechanism and is configured by combining a standardized engagement/engagement mechanism and an electrical connection mechanism, the details of which will be described later. In this embodiment, the interfaces constituting the engaged/engaged mechanism are referred to as a male side interface 705 and a female side interface 706 . A female side interface 706 is provided on the rear side of the camera body 702 .

The recorder module 703 is a storage device that stores image signals captured by the camera body 702 in a predetermined data format in a built-in storage medium (not shown). The reason why the recorder module 703 is detachable from the camera body 702 is as follows. That is, in recent years, the resolution of moving images has been particularly increased, high-definition video (FHD) has become common, and technological development of next-generation video such as 4K video and 8K video has been promoted. In addition, in order to obtain more realistic images and high-definition slow-motion images, technological development is underway to increase the frame rate for transmitting video signals from the standard 60P to 120P or 240P. there is Since the amount of digital data (video file capacity) for such next-generation video will be enormous, there is a need for storage media that can be written and read at high speeds and have large storage capacities. is required. Here, since the camera body 702 preferably has a compact structure, it is not desirable to incorporate a large storage device in the camera body 702 . Further, if the camera main body 702 has a built-in storage device, it may become difficult to cope with new technologies in the future.

Such a problem does not prevent a storage device from being built inside the camera body 702 . However, in the present embodiment, by configuring a replaceable recorder module 703 to be connectable, the recorder module 703 having appropriate storage specifications (compression format, type of storage medium) suitable for the purpose can be selected and photographed. It is possible and easy to do. The recorder module 703 has a male interface 705 on the front side and a female interface 706 on the rear side.

It should be noted that the common engagement interface employed in system camera 700 includes a communication interface and a power interface. In view of the circumstances described above, the communication interfaces provided in the camera body 702 and the recorder module 703 are capable of transmitting image data with a resolution of 4K or higher and image data with a frame rate of 60P or higher. Also, the heat dissipation module 701 is often connected between the camera body 702 and the recorder module 703 . In that case, the communication interface provided in the heat dissipation module 701 also needs to be provided with one capable of transmitting image data with a resolution of 4K or higher and image data with a frame rate of 60P or higher.

The heat dissipation module 701 is attached to the camera body 702 to increase the heat dissipation capability when there is a concern that the internal temperature of the camera body 702 may rise, such as when the camera body 702 is used in a high power consumption shooting mode or in a high temperature environment. Connected. The heat dissipation module 701 has a male interface 705 on the front side, a female interface 706 on the back side, and an internal structure conforming to that of the heat dissipation module 101 .

The battery adapter module 704 has an engagement recess 106 that engages with the battery pack 104 and battery terminals 107 on the back side, and a male side interface 705 on the front side. That is, the battery adapter module 704 is an adapter that converts the engagement interface of the battery pack 104 to a common engagement interface.

The heat dissipation module 701, the recorder module 703, the battery adapter module 704, and the battery pack 104 have connection compatibility through the above-described common engagement interface, so they can be connected sequentially in the Z-axis direction. Also, it is possible to attach and detach other modules having a common engagement interface. For example, an input/output module for converting an image signal or a control signal into a predetermined transmission signal and outputting it to the outside or inputting it from the outside, a display module having a display device such as an LCD, and an operation means for operating the system camera 700 by a user. Modules and the like can be mentioned. Other examples include a handle module, a grip module, a shoulder module, a gimbal adapter module that stabilizes the posture of the system camera 700, and a weight module that adjusts the weight balance.

In the case where the camera body 702 has a built-in storage device, the system camera 700 uses the recorder module 703 when shooting under conditions that can be handled only by storing image signals in the built-in storage device of the camera body 702. It can be a detached system. Further, when the amount of heat generated by the camera body 702 is not a problem, such as when the camera is used in a low power consumption mode such as low-resolution photography, the system can be configured without the heat dissipation module 701 . In either case, it is possible to use the system camera 700 with reduced size and weight.

<Fourth Embodiment>
FIG. 17 is an exploded perspective view of a system camera 900 according to the fourth embodiment of the invention. A system camera 900 has a camera body 902 , a lens unit 103 , a heat dissipation module 901 and a rig 500 . The rig 500 is the same as that described in the first embodiment (FIG. 11, etc.), and the configuration for attaching and detaching the rig 500 to and from the camera body 902 conforms to the description in the first embodiment. Description here is omitted.

FIG. 18(a) is a perspective view of the heat dissipation module 901 as seen from substantially the front side. The heat dissipation module 901 can be attached to and detached from the camera body 902 with screws or the like (not shown). A front surface 913 of the heat dissipation module 901 is provided with a protruding portion 911 , a heat receiving portion 914 and an extended contact pad 915 . The extended contact pads 915 transmit electrical signals and power to the camera body 902 . The function of the projecting portion 911 will be described later.

FIG. 18B is a perspective view of the camera body 902 viewed substantially from the rear side. A rear cover 920 , a rear heat radiator 921 , an extended contact pad 922 and a rear concave portion 923 are provided on the rear side of the camera body 902 . When the heat dissipation module 901 is connected to the camera body 902 , the extended contact pads 915 of the heat dissipation module 901 contact the extended contact pads 922 of the camera body 902 . The protruding portion 911 fits into a rear concave portion 923 provided on the camera body 902 . A bottom heat radiation part 924 and a bottom recess 925 are provided on the bottom side of the camera body 902 . When connecting the rig 500 to the camera body 902 , the bottom concave portion 925 fits with the rig convex portion 508 .

FIG. 19A is a YZ sectional view of the camera body 902. FIG. A rear heat radiating portion 921 provided on the rear side of the camera body 902 is biased toward the rear side by a rear biasing spring 929 to abut on a rear cover 920 forming a part of the exterior member. A bottom movable heat radiating portion 946 arranged on the bottom side of the camera body 902 is biased toward the bottom side (Y-axis negative direction) by a bottom biasing spring 945 to abut on the bottom heat radiating portion 924 . A seesaw portion 930 that is rotatable around a rotation shaft portion 931 whose axial direction is the X-axis direction is arranged near the corner where the back surface and the bottom surface intersect.

The seesaw portion 930 is position adjusting means for adjusting the positions of the rear heat dissipation portion 921 and the bottom heat dissipation portion 924 according to the connection status of the heat dissipation module 901 and/or the rig 500 to the camera body 902 . The seesaw portion 930 has a first arm portion 932 arranged on the back side and a second arm portion 933 arranged on the bottom side. The seesaw section 930 is at the neutral position shown in FIG.

Heat dissipation during use such as imaging with the lens unit 103 connected to the camera body 902 is performed as follows. That is, as shown in FIG. 19A, the heat generated on the main substrate 926 is transmitted to the rear radiator plate 928 via the heat radiating rubber 927. As shown in FIG. Here, the back biasing spring 929 is made of metal, for example, and has high thermal conductivity. Therefore, the heat transmitted to the back heat radiation plate 928 is transmitted to the back heat radiation part 921 via the back biasing spring 929 . Since the back heat radiation part 921 is in contact with the rear cover 920 by the back biasing spring 929 , heat is transferred from the back heat radiation part 921 to the rear cover 920 . In this way, heat is radiated from the rear heat radiating portion 921 and the rear cover 920 to the outside air.

On the other hand, heat is transferred from the bottom-side substrate 942 to which the heat from the imaging sensor or the like is transferred to the bottom-side heat dissipation plate 944 via a heat dissipation rubber (not shown) or the like. Here, the bottom biasing spring 945 is made of metal, for example, and has high thermal conductivity. Therefore, the heat transmitted to the bottom side heat radiation plate 944 is transmitted to the bottom movable heat radiation portion 946 via the bottom biasing spring 945 . Since the bottom movable heat radiation part 946 is in contact with the bottom heat radiation part 924 by the bottom biasing spring 945 , heat is transferred from the bottom movable heat radiation part 946 to the bottom heat radiation part 924 . In this way, heat is radiated from the bottom heat radiating portion 924 to the outside air. Furthermore, heat is transferred from the bottom heat radiation portion 924 to the exterior member, so that heat is also radiated from the exterior member to the outside air. In this manner, the camera body 902 is configured to disperse heat throughout the camera body 902 and radiate the heat to the outside air through a plurality of heat transfer paths.

FIG. 19B is a YZ cross-sectional view showing a state in which the heat radiation module 901 is connected to the camera body 902. FIG. When the heat radiation module 901 is connected to the camera body 902, the rear heat radiation portion 921 of the camera body 902 and the heat receiving portion 914 of the heat radiation module 901 are in contact with each other. As a result, heat is transferred from the rear heat radiation part 921 to the heat receiving part 914 , and heat is radiated to the outside air by heat exchange within the heat radiation module 901 . Heat exchange within the heat dissipation module 901 is performed in the same manner as heat exchange within the heat dissipation module 101, for example, and a description thereof will be omitted here.

Also, when the heat radiation module 901 is connected to the camera body 902 , the protrusion 911 of the heat radiation module 901 is inserted into the rear concave portion 923 of the camera body 902 . As a result, the second arm portion 933 of the seesaw portion 930 is pushed up in the positive Y-axis direction by the projecting portion 911 as indicated by an arrow 951 . That is, the seesaw portion 930 rotates in the clockwise direction in FIG. 19B around the rotating shaft portion 931, and as a result, the second arm portion 933 lifts the bottom movable heat radiating portion 946 in the positive direction of the Y axis. , the heat transfer path to the bottom heat radiating portion 924 is cut off. As a result, the heat generated inside the camera body 902 can be efficiently transferred to the heat dissipation module 901, making it possible to continue shooting without problems even under shooting conditions that generate a large amount of heat. Become. In addition, since heat transfer to the exterior member is suppressed by blocking the heat transfer path to the bottom portion, the temperature rise of the exterior member can be suppressed, so that the user holding the camera body 902 feels uncomfortable. can prevent

FIG. 20 is a YZ sectional view showing a state in which the rig 500 is connected to the camera body 902. FIG. When the rig 500 is connected to the camera body 902, the bottom heat radiation part 924 of the camera body 902 comes into contact with the heat receiving part 506 of the rig 500, whereby heat is transferred from the bottom heat radiation part 924 to the heat receiving part 506, and the rig Heat is radiated from 500 to the outside air. Since the heat dissipation by the rig 500 has already been explained in the first embodiment, the explanation is omitted here.

Also, when the rig convex portion 508 provided on the rig 500 is inserted into the bottom concave portion 925 of the camera body 902 , the rig convex portion 508 comes into contact with the first arm portion 932 of the seesaw portion 930 . As a result, the seesaw portion 930 rotates counterclockwise around the rotation shaft portion 931 as indicated by an arrow 952 , thereby causing the first arm portion 932 to move the rear heat radiation portion 921 toward the front side. As a result, the heat transfer from the rear heat dissipation part 921 to the rear cover 920 is suppressed, and the heat generated inside the camera body 902 is efficiently transferred from the bottom heat dissipation part 924 to the rig 500, and is radiated from the rig 500 to the outside air. It will be done.

FIG. 21 is a YZ sectional view showing a state in which the heat dissipation module 901 and the rig 500 are connected to the camera body 902. FIG. When the heat radiation module 901 and the rig 500 are connected to the camera body 902, the seesaw portion 930 returns to the neutral position due to the elastic deformation of the rig convex portion 508 and the projecting portion 911, respectively. As a result, the heat generated inside the camera body 902 is transmitted to the heat dissipation module 901 and the rig 500 and radiated to the outside air.

As described above, in the fourth embodiment, when the heat dissipation module 901, the rig 500, and the like are connected to the camera body 902, the heat transfer path is switched according to the connection position with respect to the camera body 902. FIG. As a result, it is possible to suppress the heat transfer to the exterior member, and it is possible to suppress the rise in the internal temperature of the camera body 902 by efficiently dissipating heat even under shooting conditions that generate a large amount of heat. .

In the above configuration of the fourth embodiment, the heat transfer path is mechanically changed by the rig convex portion 508 and the projecting portion 911. However, the configuration is not limited to this, and the heat transfer path is electrically changed or the piezoelectric element is used. It is good also as a structure which changes a heat-transfer path|route by the etc. In addition, the camera body 902 adopts a structure in which the heat generated inside is transferred and dissipated through various members. The air path may be blocked according to the connection position of 901, rig 500, or the like.

<Fifth Embodiment>
FIG. 22(a) is an exploded perspective view of the system camera 1000 according to the fifth embodiment, viewed substantially from the front side. FIG. 22(b) is an exploded perspective view of the system camera 1000 viewed substantially from the rear side. A system camera 1000 has a lens unit 103 , a camera body 1200 , a heat radiation module 1100 and a battery pack 1150 . FIG. 23(a) is a perspective view of the camera body 1200 in which the heat radiation module 1100 and the battery pack 1150 are connected, viewed substantially from the rear side. FIG. 23(b) is a perspective view of the state in which the battery pack 1150 is directly connected to the camera body 1200, viewed substantially from the rear side.

The camera body 1200 differs from the camera body 102 described in the first embodiment in the configuration on the back side, but the rest of the configuration is the same as the camera body 102, and the description of the configuration common to the camera body 102 is omitted here. do. At the width direction end (X-axis direction end) of the rear surface of the camera body 1200, an engagement recess 1201 having the Y-axis direction as a longitudinal direction is provided, and the engagement recess 1201 is used for attachment and detachment of various modules. A rear heat dissipation portion 1202 is provided in the center of the back surface of the camera body 1200, and rail portions 1203a and 1203b protruding to the rear side from the surface of the rear heat dissipation portion 1202 are provided on the X-axis direction side of the rear heat dissipation portion 1202. It is The rail portions 1203a and 1203b and the rear heat radiation portion 1202 are arranged so as not to overlap when viewed in the Y-axis direction. Holes are formed in the rail portions 1203a and 1203b, and the electrical contact portions 1204 protrude from these holes in the Z-axis negative direction.

An engagement protrusion 1106 that engages with an engagement recess 1201 provided on the camera body 1200 is provided at the end of the front surface of the heat radiation module 1100 in the X-axis direction. Attachment/detachment of the heat radiation module 1100 to/from the camera body 1200 is performed by engaging/releasing the engagement between the engaging concave portion 1201 and the engaging convex portion 1106 . A heat receiving portion 1108 protruding in the Z-axis positive direction is provided on the front surface 1107 of the heat dissipation module 1100 . abut. An electrical contact portion 1109 is provided between the heat receiving portion 1108 and the engaging protrusion 1106 in the X-axis direction so as to protrude from the front surface 1107 . Note that the internal configuration of the heat radiation module 1100 is the same as that of the heat radiation module 101 described in the first embodiment, and description thereof will be omitted here. Inside the heat dissipation module 1100, heat is exchanged between the heat receiving part 1108 and the outside air (air) as in the first embodiment.

An engaging recess 1114 equivalent to the engaging recess 1201 provided on the back of the camera body 1200 and an electrical contact portion 1113 equivalent to the electrical contact portion 1204 are provided on the rear surface of the heat radiation module 1100 .

A battery pack 1150 is a module that supplies power to the camera body 1200 . An engagement protrusion 1151 equivalent to the engagement protrusion 1106 of the heat dissipation module 1100 is provided at the X-axis direction end of the front surface of the battery pack 1150 . As a result, the battery pack 1150 can be attached to and detached from the rear surface of the camera body 1200 (FIG. 23(b)), and can also be attached to and detached from the rear surface of the heat radiation module 1100 (FIG. 23(a)). )). An electric contact portion 1152 equivalent to the electric contact portion 1109 of the heat radiation module 1100 is provided on the front surface of the battery pack 1150 . When the battery pack 1150 is connected to the camera body 1200 , the electrical contact portion 1152 contacts the electrical contact portion 1204 . When the battery pack 1150 is connected to the heat dissipation module 1100 , the electrical contact portion 1152 contacts the electrical contact portion 1113 .

In addition, in the configuration in which the battery pack 1150 is directly connected to the camera body 1200 without connecting the heat radiation module 1100, the increase in the internal temperature of the camera body 1200 may have a margin with respect to the guaranteed temperature due to the relationship between the usage environment temperature and the shooting operation mode. It is one of the usage modes in some cases.

FIG. 24(a) is a cross-sectional view showing a state in which the heat radiation module 1100 and the battery pack 1150 are connected to the camera body 1200. FIG. When the heat dissipation module 1100 is connected to the camera body 1200 , the back heat dissipation part 1202 and the heat receiving part 1108 are in contact with each other, and heat is transferred from the back heat dissipation part 1202 to the heat receiving part 1108 as indicated by an arrow 1280 . Inside the heat radiation module 1100, heat exchange similar to that of the heat radiation module 101 is performed, thereby radiating heat to the outside air.

FIG. 24(b) is a sectional view showing a state in which the battery pack 1150 is connected to the camera body 1200. FIG. When the battery pack 1150 is connected to the camera body 1200, a cavity 1220 is formed which is surrounded by the rear surface of the camera body 1200, the rails 1203a and 1203b, and the front surface of the battery pack 1150 and opens in the Y-axis direction. The heat generated inside the camera body 1200 is transmitted to the back heat radiation portion 1202 , and the heat is radiated to the air inside the hollow portion 1220 by the back heat radiation portion 1202 . When the temperature of the air in cavity 1220 rises, the chimney effect causes an air flow indicated by arrow 1290 in cavity 1220, and the warmed air in cavity 1220 moves in the positive Y-axis direction of cavity 1220. emitted from the side opening. Then, instead of that, outside air flows into cavity 1220 from the opening of cavity 1220 on the Y-axis negative direction side. In this way, continuous heat dissipation to the outside air is performed. At this time, since the rear heat radiation part 1202 is not in direct contact with the battery pack 1150, the temperature rise of the battery pack 1150 can be suppressed.

FIG. 24(c) is a rear view of the camera body 1200. FIG. In the camera body 1200, one rail portion 1203b is shorter in the Y-axis direction than the other rail portion 1203a. As a result, when the two rail portions 1203a and 1203b have the same length in the Y-axis direction, air flows in the direction indicated by the arrow 1252. As shown in FIG. On the other hand, by making the lengths of the rail portions 1203a and 1203b different in the Y-axis direction, air flows in the directions indicated by arrows 1251 and 1253 are generated. As a result, even if an accessory that covers the bottom surface or the top surface of the camera body 1200 is connected to the camera body 1200, it is possible to dissipate heat without blocking the cavity 1220. FIG. However, it is not limited to this, and the two rail portions 1203a and 1203b may have the same length in the Y-axis direction.

<Sixth Embodiment>
FIG. 25(a) is an exploded perspective view of the system camera 1300 according to the sixth embodiment, viewed substantially from the rear side. FIG. 25(b) is an exploded perspective view of the system camera 1300 viewed substantially from the front side. The system camera 1300 has a camera body 1310 and a heat dissipation module 1350 . 26 is an exploded perspective view of the camera body 1310. FIG.

A rear cover 1313 is attached to the rear surface of the camera body 1310 . The rear cover 1313 has a rear heat radiating portion 1311 in which a plurality of grooves 1311 a are formed along the Y-axis direction, and a protective member 1312 arranged to cover the surface of the rear heat radiating portion 1311 . The protective member 1312 is made of a material having a lower thermal conductivity than the rear heat radiation portion 1311, such as resin. Long hole portions 1312a are formed in the protection member 1312 along the Y-axis direction so as to correspond to the plurality of groove portions 1311a. In other words, the protective member 1312 covers the projections (outermost surface) formed between the plurality of grooves 1311a in the back heat radiation part 1311. As shown in FIG. A plurality of hollow portions 1313 a are formed in the rear cover 1313 so as to communicate with the groove portions 1311 a of the rear heat radiation portion 1311 .

FIG. 27 is a side view showing a state in which the heat dissipation module 1350 is connected to the camera body 1310. FIG. FIG. 28(a) is a cross-sectional view taken along line BB shown in FIG. FIG. 28(b) is an enlarged view of region C shown in FIG. 28(a). A heat receiving portion 1351 having a plurality of convex portions 1351 a formed along the Y-axis direction is provided on a front surface 1352 of the heat dissipation module 1350 , and the convex portions 1351 a protrude from the front surface 1352 . When the heat dissipation module 1350 is connected to the camera body 1310, the plurality of convex portions 1351a are engaged with the grooves 1311a provided in the rear cover 1313 and the elongated holes 1312a of the protective member 1312, so that the rear heat dissipation portion 1311 and the heat receiving portion 1351 are in close contact with each other. At this time, the convex portion 1351a is inserted through the long hole portion 1312a provided in the protective member 1312 and is in contact with the groove portion 1311a. At that time, a clearance J1 is provided between the protective member 1312 and the front surface 1352 so that the convex portion 1351a is reliably brought into contact with the groove portion 1311a. For the same purpose, the convex portion 1351a and the groove portion 1311a are provided with an angle J2 with respect to the Z-axis direction, which is the connection direction. The internal configuration of the heat dissipation module 1350 conforms to the heat dissipation module 101 described in the first embodiment. It is discharged from 1350.

FIG. 29(a) is a rear view of the camera body 1310. FIG. FIG. 29(b) is a cross-sectional view taken along line DD shown in FIG. 29(a). The long hole portion 1312 a of the protective member 1312 communicates with the hollow portion 1313 a provided in the rear cover 1313 through the groove portion 1311 a of the rear heat radiation portion 1311 . Thus, in the camera body 1310, an air flow path communicating with the outside air (external environment) is formed by the elongated hole portion 1312a, the groove portion 1311a, and the hollow portion 1313a.

When the heat dissipation module 1350 is not connected to the camera body 1310, the heat generated inside the camera body 1310 and transferred to the rear heat dissipation portion 1311 is released from the groove 1311a of the rear heat dissipation portion 1311 as indicated by an arrow 1380 into the air. (inflow). The air (discharge) thus warmed is discharged from the cavity 1313a. Therefore, even when the heat radiation module 1350 is not connected, the heat generated inside the camera body 1310 can be efficiently released to the outside, and the rise in the internal temperature of the camera body 1310 can be suppressed.

In addition, as shown in FIG. 26, the rear heat radiation portion 1311 of the camera body 1310 is covered with a protective member 1312 made of resin. Therefore, the user does not directly touch the back heat dissipation part 1311, and thus the user can be prevented from feeling uncomfortable by touching the back heat dissipation part 1311. FIG. In addition, since the protective member 1312 has a low thermal conductivity, even if the rear heat radiating portion 1311 becomes hot when the heat radiating module 1350 is not connected, the temperature of the protective member 1312 does not rise easily. It's getting harder to feel.

As described above, in the sixth embodiment, even if the back heat radiation portion 1311 provided on the back surface of the camera body 1310 becomes hot, the user can be protected from the back heat radiation portion 1311, and the camera body 1310 can be used alone. It is possible to dissipate heat efficiently. In the camera body 1310, the protective member 1312 is made of resin. Also, although the configuration in which the protection member 1312 and the rear cover 1313 are separate members has been described, these may be integral parts.

<Seventh Embodiment>
FIG. 30(a) is a perspective view of the system camera 1400 according to the seventh embodiment as seen from the front upper side. FIG. 30(b) is a perspective view of the system camera 1400 viewed from the lower front side. FIG. 30(c) is a perspective view of the system camera 1400 viewed substantially from the rear side. The system camera 1400 has a camera body 1410 and a heat dissipation module 1450 . The heat dissipation module 1450 is attached to the camera body 1410 with bolts 1460 .

FIG. 31(a) is an exploded perspective view of the system camera 1400 viewed substantially from the front side. FIG. 31(b) is an exploded perspective view of the system camera 1400 viewed from the rear side. 31(a) and 31(b), a part of the camera body 1410 is disassembled.

Air vents 1411 are formed in the top and bottom surfaces of the camera body 1410. Normally, the bottom vent 1411 mainly functions as an air inlet, and the top vent 1411 mainly functions as an air outlet. A rear cover 1430 and a heat dissipation part 1440 are arranged on the rear surface of the camera body 1410 where the heat dissipation module 1450 is attached and detached. The heat radiating portion 1440 is biased in the Z-axis negative direction by a biasing spring 1420 made of a material having high thermal conductivity such as metal, and is disposed movably in the Z-axis direction.

Rear cover 1430 has extended contact pads 1437 . A heat receiving portion 1456 and an electrical contact portion 1458 are provided on the front surface of the heat dissipation module 1450 that serves as the mounting surface for the camera body 1410 . The electrical contact portion 1458 is connected with the extended contact pad 1437 when the heat dissipation module 1450 is connected to the camera body 1410 .

FIG. 32(a) is a rear view of the system camera 1400. FIG. FIG. 32(b) is a cross-sectional view taken along line EE shown in FIG. 32(a). Heat generated in the main substrate 1412 (electronic components mounted on the main substrate 1412 ), which is a heat-generating portion of the camera body 1410 , is transferred to the heat dissipation plate 1414 via the heat dissipation rubber 1413 . The heat transmitted to the radiator plate 1414 is transmitted to the radiator 1440 via the biasing spring 1420 .

Here, the heat receiving portion 1456 of the heat dissipation module 1450 dissipates heat in a state in which the heat dissipation portion 1440 is pressed and shifted into the camera body 1410 (in the positive Z-axis direction) against the biasing force of the biasing spring 1420 . It is in contact with portion 1440 . Therefore, heat transfer from the heat dissipation part 1440 to the rear cover 1430 is suppressed, and heat is mainly transferred from the heat dissipation part 1440 to the heat receiving part 1456 of the heat dissipation module 1450 . The internal configuration of the heat dissipation module 1450 conforms to the heat dissipation module 101 described in the first embodiment. be done.

FIG. 33(a) is a rear view of the camera body 1410. FIG. FIG. 33(b) is a sectional view taken along line FF shown in FIG. 33(a). In the camera body 1410 to which the heat radiation module 1450 is not connected, the heat radiation section 1440 is pressed against the rear cover 1430 by being biased in the Z-axis negative direction by the biasing spring 1420 . As a result, the heat generated in the main substrate 1412 is transferred to the heat dissipation portion 1440 via the biasing spring 1420, and further transferred to the rear cover 1430, whereupon the heat is radiated from the rear cover 1430 to the outside air.

FIG. 34(a) is a side view of the camera body 1410. FIG. FIG. 34(b) is a cross-sectional view taken along line GG shown in FIG. 34(a). Since air vents 1411 are formed on the top and bottom surfaces of the camera body 1410, air is drawn schematically by arrows in FIGS. Air enters as shown. After the air that has flowed into the camera body 1410 is warmed by heat radiation from the heat radiation part 1440 and the biasing spring 1420, the air flows as shown schematically by the arrows in FIGS. , is discharged from the vent 1411 on the upper surface side.

Here, the urging springs 1420 are arranged at predetermined intervals in the X-axis direction, as shown in FIG. 34(b). As a result, the air that has flowed into the camera body 1410 through the vent hole 1411 on the bottom can effectively contact the plurality of biasing springs 1420, thereby increasing the cooling efficiency. The arrangement of the urging springs 1420 is not limited to the arrangement shown in FIG. The heat dissipation effect of the air flowing through the vent 1411 can be obtained regardless of whether or not the heat dissipation module 1450 is connected, but it plays an important role in heat dissipation, especially when the heat dissipation module 1450 is not connected.

Note that the heat radiating portion 1440 is arranged so as to be exposed to the outside at a position one step lower than the outer surface of the rear cover 1430 in the positive Z-axis direction. Therefore, it is difficult for the user to carelessly touch the heat radiating section 1440 whose temperature has risen due to heat transfer from the inside of the camera body 1410, thereby preventing the user from touching the heat radiating section 1440 and feeling uncomfortable. can. Also, when other accessories such as a battery pack are connected to the camera body 1410, the heat dissipation part 1440 does not come into direct contact with the accessory. Therefore, by suppressing the temperature rise of the accessory, it is possible to suppress the occurrence of an abnormality in the operation of the accessory and ensure the reliability of the accessory. Furthermore, when the heat dissipation module 1450 is not connected, the heat dissipation part 1440 is brought into contact with the rear cover 1430 by the biasing spring 1420 , and the opening of the rear cover 1430 is sealed by the heat dissipation part 1440 . Therefore, it is possible to prevent dust and the like from entering the inside of the camera body 1410 from the outside.

As described above, according to the seventh embodiment, even when the heat dissipation module 1450 is not connected to the camera body 1410, the heat generated inside the camera body 1410 is dissipated from the rear cover 1430 or the vent 1411. Heat is dissipated. Thereby, an increase in the internal temperature of the camera body 1410 can be suppressed.

<Eighth Embodiment>
FIG. 35(a) is a perspective view of the system camera 1500 according to the eighth embodiment as seen from the front upper side. FIG. 35(b) is a perspective view of the system camera 1500 viewed substantially from the bottom side. A system camera 1500 has a lens unit 103 , a camera body 1510 and a heat dissipation module 1550 . FIG. 36(a) is an exploded perspective view of the system camera 1500 viewed substantially from the rear side. FIG. 36(b) is an exploded perspective view of the system camera 1500 viewed substantially from the front side. 36A and 36B, illustration of the lens unit 103 is omitted.

The heat dissipation module 1550 can be connected to the camera body 1510 with bolts 1560 . A rear heat radiating section 1540 and a rear cover 1530 forming part of the exterior of the camera body 1510 are arranged on the rear surface of the camera body 1510 . The heat dissipation module 1550 includes a bottom vent 1555 , a top vent 1557 , a heat receiving portion 1556 and an electrical contact portion 1559 . With the heat dissipation module 1550 connected to the camera body 1510 , the heat receiving part 1556 is in contact with the rear heat dissipation part 1540 and the electrical contact part 1559 is in contact with the extended contact pad 1537 .

FIG. 37(a) is a rear view of the system camera 1500. FIG. FIG. 37(b) is a cross-sectional view taken along line HH shown in FIG. 37(a). In addition, in FIG. 37(b), illustration of parts and the like that are not substantially involved in heat dissipation is omitted. A main board 1512 arranged inside the camera body 1510 is mounted with a plurality of semiconductor elements or the like that serve as heat generating portions, and serves as a heat generating portion inside the camera body 1510 . The heat generated in the main board 1512 is transmitted to the rear heat radiation portion 1540 via the heat radiation rubber 1513 as indicated by arrow 1580 . The heat transferred to the rear heat dissipation part 1540 is transferred to the heat receiving part 1556 of the heat dissipation module 1550 as indicated by the arrow 1590 .

38(a) is a side view of the heat dissipation module 1550. FIG. FIG. 38(b) is a sectional view taken along line II shown in FIG. 38(a). Inside the heat dissipation module 1550, heat dissipation fins 1558 are provided with the Y-axis direction as the longitudinal direction, and heat is transferred from the heat receiving portion 1556 to the heat dissipation fins 1558. FIG. Like the heat dissipation module 101 described in the first embodiment, the heat dissipation module 1550 emits the heat transferred to the heat dissipation fins 1558 to the outside air by the chimney effect. That is, in the heat dissipation module 1550 , the air that has flowed into the inside of the heat dissipation module 1550 through the bottom vent 1555 is warmed by the heat from the heat dissipation fins 1558 and is discharged from the top vent 1557 . In this way, heat generated inside the camera body 1510 is discharged from the heat radiation module 1550, thereby suppressing an increase in the internal temperature of the camera body 1510. FIG.

FIG. 39(a) is a perspective view of the state in which the protection unit 1570 is attached to the camera body 1510, viewed substantially from the front side. FIG. 39(b) is a perspective view of the state in which the protection unit 1570 is attached to the camera body 1510, viewed substantially from the rear side. When the heat dissipation module 1550 is not connected to the camera body 1510, the extension contact pad 1537 and the rear heat dissipation part 1540 are exposed on the back of the camera body 1510. Therefore, a protection unit 1570 must be connected to protect them. is desirable. In addition, if the camera body 1510 is used without the heat dissipation module 1550 connected, the back heat dissipation part 1540 becomes locally hot and exposed, so it is necessary to protect the user from the back heat dissipation part 1540. On the other hand, it is also necessary to dissipate the heat transferred from the main substrate 1512 to the rear heat dissipation portion 1540 without giving discomfort to the user. Therefore, as described below, the protection unit 1570 has a structure capable of transmitting the heat of the rear heat radiation section 1540 to the exterior member of the camera body 1510 and dissipating the heat from the exterior member to the outside air.

FIG. 40(a) is a perspective view of the protection unit 1570 viewed from substantially the front side. FIG. 40(b) is a perspective view of the protection unit 1570 viewed substantially from the rear side. The front surface of the protection unit 1570 has a heat receiving portion 1571 made of a material with high thermal conductivity such as metal, and the back side of the protection unit 1570 is made of resin or the like with high heat insulation (low thermal conductivity). The heat insulating portion 1572 is made of material. The heat receiving portion 1571 has a heat receiving surface 1573 (first contact surface) that contacts the rear heat radiation portion 1540 when the protection unit 1570 is connected to the camera body 1510, and a heat diffusion surface that contacts the rear cover 1530 of the camera body 1510. 1574 (second contact surface).

FIG. 41(a) is a rear view of the camera main body 1510 with the protection unit 1570 attached. FIG. 41(b) is a sectional view taken along line KK shown in FIG. 41(a). When the protection unit 1570 is directly connected to the camera body 1510 , the heat generated in the main substrate 1512 is transferred to the rear heat dissipation portion 1540 via the heat dissipation rubber 1513 as indicated by arrow 1580 . The heat transmitted to the back heat radiation part 1540 is transmitted to the heat receiving part 1571 of the heat receiving surface 1573 of the protection unit 1570 as indicated by the arrow 1590 . The heat transferred to heat receiving surface 1573 is transferred from heat diffusion surface 1574 to rear cover 1530 of camera body 1510 as indicated by arrow 1595 . As a result, heat can be radiated from the rear cover 1530 to the outside air. Further, when the protection unit 1570 is connected to the camera body 1510, even if the temperature of the heat receiving portion 1571 rises, the temperature rise of the heat insulation portion 1572, which is widely exposed to the outside, is suppressed. Therefore, the risk of the user directly touching the heat receiving portion 1571 can be reduced.

Although the protection unit 1570 covering almost the entire rear surface of the camera body 1510 has been described, the configuration in which the extension contact pad 1537 is exposed allows a battery pack to be connected while the protection unit 1570 is connected. may be

The protection unit 1570 is also detachable from the bottom surface of the camera body 1510 . 42 is a side view showing a state in which the protection unit 1570 is connected to the bottom surface of the camera body 1510. FIG. As shown in FIG. 42, a space 1585 is formed between the bottom surface of the heat radiation module 1550 connected to the camera body 1510 and the top surface of the protection unit 1570 . Therefore, since the bottom vent 1555 provided on the bottom surface of the heat dissipation module 1550 is not blocked by the protection unit 1570, the heat dissipation performance of the heat dissipation module 1550 does not deteriorate. By connecting the protection unit 1570 to the bottom of the camera body 1510, it is possible to prevent damage to the bottom of the camera body 1510 and to prevent the loss of the protection unit 1570 when using the heat dissipation module 1550. become.

As described above, in the eighth embodiment, the protection unit 1570 can be attached to and detached from the camera body 1510. When the protection unit 1570 is connected, the heat generated inside the camera body 1510 is dissipated through the rear cover 1530. possible configuration. Thereby, an increase in the internal temperature of the camera body 1510 can be suppressed. Further, even when the heat radiation module 1550 is connected to the rear surface of the camera body 1510 and the protection unit 1570 is connected to the bottom surface of the camera body 1510, the heat radiation performance of the heat radiation module 1550 is not degraded.

<Ninth Embodiment>
FIG. 43(a) is an exploded perspective view of the system camera 7000 according to the ninth embodiment, viewed substantially from the front side. FIG. 43(b) is an exploded perspective view of the system camera 7000 viewed substantially from the rear side. A system camera 7000 is composed of a lens unit 103 , a camera body 7100 and a heat dissipation module 7200 .

A lens mount 7101 for connecting the lens unit 103 is arranged on the front surface of the camera body 7100 . The lens mount 7101 has a lens electrical contact portion 7102 and a lens attachment/detachment knob 7103 . A lens electrical contact section 7102 detects attachment/detachment of the lens unit 103 and controls communication between the camera body 7100 and the lens unit 103 . A lens attachment/detachment knob 7103 is an operation member for attaching and detaching the lens unit 103 . Note that the lens mount 7101 is substantially the same as the lens mount 105 described in the first embodiment. An imaging device (not shown) and a video signal (image signal) output from the imaging device are converted into signals of a predetermined format at a position inside the camera body 7100 and substantially on the rear side of the lens mount 7101 . A sensor substrate (not shown) is arranged.

A module connection unit 7111 , an engagement hole 7112 , an external connection terminal group 7113 and a power supply terminal 7114 are provided on the rear surface of the camera body 7100 . The module connection unit 7111 is a unit that electrically and thermally connects the camera body 7100 and the heat dissipation module 7200, the details of which will be described later. The engagement hole 7112 is a part for mechanically fixing the camera body 7100 and the heat dissipation module 7200 . The external connection terminal group 7113 is an interface for connecting an external device (not shown). A power terminal 7114 is an interface for connecting an AC adapter or the like or a battery pack.

A group of operation buttons 7106 , a REC button 7107 , a power switch 7108 , and a storage medium storage lid 7110 are provided on the right side of the camera body 7100 (the side facing the positive direction of the X axis). The operation button group 7106 is operation means for causing the camera body 7100 to perform a predetermined operation by user's operation. A storage medium such as a memory card (not shown) can be attached/detached to/from the camera body 7100 with the storage medium storage cover 7110 opened.

A first connection unit 7201 and an engaging claw 7202 are provided on the front surface of the heat dissipation module 7200 . The first connection unit 7201 is a unit for electrically and thermally connecting the camera body 7100 and the heat radiation module 7200 . The engaging claw 7202 is a member for mechanically fixing the camera body 7100 and the heat dissipation module 7200 . Note that the engaging claw 7202 is biased downward (in the negative Y-axis direction) by a biasing member (not shown) arranged inside the heat dissipation module 7200 .

A fan 7203 and an exhaust port 7204 for discharging the air in the heat dissipation module 7200 to the outside by driving the fan 7203 are provided on the upper surface (positive direction of the Y axis) of the heat dissipation module 7200 . Both side surfaces (surfaces in the positive and negative directions of the X-axis) of the heat dissipation module 7200 are provided with an intake port 7205 and a lock release lever 7206 . By driving the fan 7203 , air flows into the heat dissipation module 7200 from the outside through the air inlet 7205 . The lock release lever 7206 is a member for lifting the engaging claw 7202 upward (Y-axis positive direction). A second connection unit 7207 is arranged and an engagement hole 7208 is provided on the rear surface of the heat dissipation module 7200 . The second connection unit 7207 is a unit for mechanically and/or electrically connecting various modules such as a battery pack and a recorder module that can be connected to the rear surface of the heat dissipation module 7200 . The engagement hole 7208 is a part for mechanically fixing various modules connected to the rear surface of the heat dissipation module 7200 to the heat dissipation module 7200 , similar to the engagement hole 7112 .

FIG. 44 is an exploded perspective view showing the configuration of the module connection unit 7111 provided in the camera body 7100 and its peripheral portion. FIG. 45(a) is a first side view of the module connection unit 7111 and its surroundings (a side view viewed in the positive direction of the X axis). FIG. 45(b) is a second side view of the module connection unit 7111 and its surroundings (side view in the negative direction of the X-axis). FIG. 46 is a cross-sectional view taken along line LL shown in FIG. 45(b). FIG. 47 is a rear view of the module connection unit 7111 and its surroundings.

The module connection unit 7111 includes an electrical contact holder 7122, a contact protection member 7119, a contact substrate 7121 on which the electrical contact 7120 is mounted, a contact radiator plate 7124, and a It has contact part heat radiation rubber 7125a. The contact protection member 7119 and the contact substrate 7121 are screwed and fixed to the electrical contact holder 7122 with the electrical contact 7120 inserted into the hollow portion 7119 a of the contact protection member 7119 . The contact heat sink 7124 is screwed to the electrical contact holder 7122 so as to cover the contact substrate 7121 in Z-axis projection (overlapping the contact substrate 7121 when viewed in the Z-axis direction). be done. A contact heat radiation rubber 7125a is attached to the surface of the contact heat radiation plate 7124 opposite to the surface facing the contact substrate 7121 (surface on the Z-axis positive direction side).

Inside the camera body 7100 are a main board 7128 for controlling the operation of the camera body 7100 and a main board radiator plate 7129 for dissipating heat generated by various electronic components mounted on the main board 7128 . are placed. A first CPU 7130 and a second CPU 7131 serving as main heat generating portions are mounted on the main board 7128 . Each of the first CPU 7130 and the second CPU 7131 is in contact with a main board heat dissipation rubber 7132 for conducting heat transfer to the main board heat dissipation plate 7129 .

The main substrate heat radiation plate 7129, the main substrate heat radiation rubber 7132, and the main substrate 7128 are arranged substantially parallel to each other in this order along the Z axis toward the positive direction of the Z axis. The main substrate heat radiation rubber 7132 and the contact portion heat radiation rubber 7125a are arranged at positions facing each other with the main substrate heat radiation plate 7129 interposed therebetween in the Z-axis direction. Also, the contact part substrate 7121 and the main substrate 7128 are electrically connected by wires, flexible substrates (not shown), etc., and transmission and reception of video signals, power supply, and the like are performed.

The heat generated by the first CPU 7130 and the second CPU 7131 is transmitted to the contact heat radiation rubber 7125a through the main board heat radiation rubber 7132 and the main board heat radiation plate 7129, and further through the contact heat radiation plate 7124 to the electrical contact holder. It is transmitted to 7122. The contact portion contact surface 7122a of the electrical contact portion holder 7122 is exposed to the exterior of the camera body 7100, but it is more exposed than the rear surface 7123b, which is the outer surface of the rear cover 7123, and the convex rectangular frame portion 7123e surrounding the contact portion contact surface 7122a. It is exposed on the inner side (positive side of the Z-axis).

Here, the contact portion contact surface 7122 a has a rectangular frame shape surrounding the electrical contact portion 7120 , and can release heat to the outside air around the camera body 7100 . Also, the heat generated by the first CPU 7130 and the second CPU 7131 is transferred to the side cover 7118 via the main board heat radiation rubber 7132, the main board heat radiation plate 7129, and the heat radiation rubber 7125b. It is possible to do

The electrical contact holder 7122 is made of a material having a high thermal conductivity, such as aluminum die-cast, so that the heat transferred to the contact heat sink 7124 can be efficiently released to the outside air. ing. On the other hand, the rear cover 7123 and the contact protection member 7119 are made of a resin material or the like having a low thermal conductivity, so that the heat from the electrical contact holder 7122 is difficult to transfer, and the temperature rise is suppressed.

Next, the configuration of the heat dissipation module 7200 and its peripheral portion will be described. 48 is an exploded perspective view of the heat dissipation module 7200. FIG. FIG. 49(a) is a side view showing the configuration of the first connection unit 7201 and its surroundings that constitute the heat dissipation module 7200. FIG. FIG. 49(b) is a sectional view taken along line MM shown in FIG. 49(a). FIG. 50 is a rear view of the heat dissipation module 7200. FIG.

The first connection unit 7201 includes a front contact holder 7222, a front contact substrate 7221 on which a front electrical contact 7220 is mounted, a heat sink 7223, and a radiator plate 7224, which are arranged substantially parallel to each other in this order from the front toward the Z-axis negative direction. It is arranged and configured in The front contact portion holder 7222 is screwed and fixed to the heat sink 7223 with the front electrical contact portion 7220 inserted into the hollow portion 7222e. The front contact board 7221 is also fixed to the heat sink 7223 by screwing.

In the first connection unit 7201, the heat sink 7223 and the radiator plate 7224 form a duct-like air flow path having an air intake port 7231 and an air discharge port 7232. As shown in FIG. The intake port 7231 communicates with an intake port 7205 formed in the front cover 7228 via an intake cushion 7227 . In addition, the exhaust port 7232 communicates with the exhaust port 7204 appearing on the exterior of the heat dissipation module 7200 through the fan 7203 and the exhaust port cushion 7226 . When the fan 7203 is driven, air flows into the heat dissipation module 7200 through the intake port 7205, and after heat is exchanged with the heat sink 7223, is discharged to the outside through the exhaust port 7204. FIG. The heat sink 7223 has a plurality of fins 7223a extending in the Y-axis direction, which is the direction in which air flows, in order to improve heat exchange efficiency.

A front contact surface 7222a (see FIG. 51(a)) of the front contact portion holder 7222 is exposed to the outside, and is located inside (Z-axis negative direction side) of the tip of the convex rectangular frame portion 7228e. The front contact surface 7222 a has a rectangular frame shape surrounding the front electrical contact portion 7220 . Also, the front contact holder 7222 and the heat sink 7223 are made of a material with high thermal conductivity such as aluminum die casting, and have a structure in which heat can be transferred between them fixed with screws. On the other hand, the front cover 7228 is made of a resin material or the like having a low thermal conductivity, so that the heat from the front contact portion holder 7222 is difficult to be transmitted, so that the temperature rise is suppressed.

The second connection unit 7207 has a structure similar to that of the module connection unit 7111 . The second connection unit 7207 includes a back contact holder 7242, a back contact protection member 7239, a back contact substrate 7241 on which the back electrical contact 7240 is mounted, and a back contact heat dissipation device, which are arranged in order in the negative direction of the Z axis. It has a plate 7244 and a back contact heat radiation rubber 7245 . The rear contact protection member 7239 and the rear contact substrate 7241 are screwed and fixed to the rear contact holder 7242 while the rear electrical contact 7240 is inserted into the hollow portion 7239 a of the rear contact protection member 7239 . The rear contact heat sink 7244 is screwed and fixed to the rear contact holder 7242 so as to cover the rear contact substrate 7241 in Z-axis projection. A back contact heat radiation rubber 7245 is pasted on the opposite side of the back contact heat radiation plate 7244 facing the back contact substrate 7241 .

The rear contact portion contact surface 7242a is exposed to the exterior of the heat dissipation module 7200, but is located inside (Z-axis positive direction) the convex square frame portion 7229e surrounding the rear surface of the rear cover 7229 and the rear contact portion contact surface 7242a. do. In addition, the rear contact portion holder 7242 is formed of a material having a high thermal conductivity such as aluminum die casting. On the other hand, the rear surface of the rear cover 7229 and the rear contact protection member 7239 are made of a resin material or the like having low thermal conductivity. The front contact part board 7221 and the rear contact part board 7241 are electrically connected by a wire or a flexible board (not shown) or the like, and transmission/reception of video signals, power supply, and the like are performed.

Thus, electrical connection is established between the first connection unit 7201 and the second connection unit 7207 of the heat dissipation module 7200 . Therefore, when another module such as a recorder module is connected to the rear side of the heat dissipation module 7200, the other module can be electrically connected to the camera body 7100. FIG.

Next, a heat dissipation structure in a state where the heat dissipation module 7200 is connected to the camera body 7100 will be described. FIG. 51(a) is a partial cross-sectional view showing the state before the heat radiation module 7200 is connected to the camera body 7100. FIG. ) are shown. FIG. 51(b) is a partial cross-sectional view of the state in which the heat radiation module 7200 is connected to the camera body 7100, and is a ZX cross section (perpendicular to the Y axis) of the rear side of the camera body 7100 and the front side of the heat radiation module 7200. face) is shown. The cross-sectional positions in FIGS. 51(a) and 51(b) are the same as the cross-sectional positions in FIG.

The contact portion contact surface 7122a of the camera body 1700 is exposed on the front side from the contact portion protection member 7119 and the convex square frame portion 7123e. Also, the front contact surface 7222a of the heat dissipation module 7200 is exposed on the rear side beyond the tip of the convex square frame portion 7228e. When connecting the heat radiation module 7200 to the camera body 7100, the module connection unit 7111 of the camera body 7100 and the first connection unit 7201 of the heat radiation module 7200 face each other in the Z-axis direction. Then, when the heat radiation module 7200 is pushed into the camera body 7100, the positions of the camera body 7100 and the heat radiation module 7200 in the X-axis direction and the Y-axis direction are adjusted by the concave inclined surface 7123d of the rear cover 7123 and the convex inclined surface 7228d of the front cover 7228. be guided. Accordingly, the approximate positions of the camera body 7100 and the heat dissipation module 7200 are determined.

After that, the electrical contact portion 7120 of the module connection unit 7111 and the front electrical contact portion 7220 of the first connection unit 7201 are fitted, and the contact portion contact surface 7122a and the front contact surface 7222a are brought into contact with each other. At this time, the convex square frame portion 7228 e is located in the concave region 7133 formed by the electrical contact holder 7122 and the rear cover 7123 . The camera body 7100 and the heat dissipation module 7200 are connected by engaging the engagement holes 7112 of the camera body 7100 with the engagement claws 7202 of the heat dissipation module 7200 .

Here, the electrical contact portion 7120 of the camera body 7100 and the front electrical contact portion 7220 of the heat dissipation module 7200 have a floating structure. In this way, it is possible to connect the camera body 7100 and the heat radiation module 7200 by absorbing the dimensional variation of the electrical contact holder 7122 and the front contact holder 7222 and the mounting deviation between the electrical contact 7120 and the front electrical contact 7220. It is possible.

The heat generated by the first CPU 7130 and the second CPU 7131 mounted on the main board 7128 is transferred to the main board heat dissipation plate 7129 via the main board heat dissipation rubber 7132 . Most of the heat transmitted to the main board heat sink 7129 is transmitted to the contact heat sink 7124 and the electrical contact holder 7122 through the heat radiation rubber 7125a, and part of it is transmitted to the side cover 7118 through the heat radiation rubber 7125b. The heat transmitted to the electrical contact portion holder 7122 is transmitted from the contact portion contact surface 7122 a to the front contact surface 7222 a and then transmitted from the front contact portion holder 7222 to the heat sink 7223 . The radiation of heat transferred to the heat sink 7223 has already been explained.

By connecting the heat dissipation module 7200 to the camera body 7100 in this way, the heat generated on the main substrate 7128 is transferred to the inside of the heat dissipation module 7200 and then released to the outside air. Thereby, an increase in the internal temperature of the camera body 7100 can be suppressed. In the system camera 7000, since the contact portion contact surface 7122a and the front contact surface 7222a do not protrude (expose) from the outermost surface, the user's hands and fingers may not be exposed to the contact portion contact surface which becomes hot when the heat dissipation module 7200 is attached and detached. 7122a and the front contact surface 7222a are difficult to touch. Thereby, it is possible to prevent the user from feeling uncomfortable by touching the high-temperature part.

Also, when the camera body 7100 is used under a low load (the amount of heat generated inside is small), the heat generated on the main substrate 7128 is dissipated through the main substrate heat radiation rubber 7132, the main substrate heat radiation plate 7129, and the heat radiation rubber 7125b. Then, the heat is radiated from the side cover 7118 to the outside. In other words, when using the camera body 7100 with a low load, the structure is such that the heat dissipation module 7200 does not need to be connected. As a result, sufficient heat dissipation performance can be obtained by connecting the heat dissipation module 7200 when used under a high load without increasing the size of the camera body 7100 (without requiring high heat dissipation performance). It is possible to provide a system that can be

<Tenth Embodiment>
FIG. 52 is a schematic front perspective view of a camera body 7400 and a heat radiation module 7500 that constitute a system camera according to the tenth embodiment. FIG. 53 is an exploded perspective view of the heat dissipation module 7500. FIG. FIG. 54(a) is a partial cross-sectional view showing the state before the heat radiation module 7500 is connected to the camera body 7400, and is a ZX cross section (Y axis ) are shown. FIG. 54(b) is a partial cross-sectional view of a state in which the heat dissipation module 7200 is connected to the camera body 7100, and the rear side of the camera body 7100 and the ZX cross section (plane perpendicular to the Y axis) of the heat dissipation module 7200 are aligned. It is shown. The cross-sectional positions in FIGS. 54(a) and (b) are the same as the cross-sectional positions in FIGS. 51(a) and (b), respectively.

The camera body 7400 differs from the camera body 7100 described in the ninth embodiment only in the configuration of the rear cover. Specifically, the rear cover 7123 of the camera body 7100 is provided with the recessed sloped surface 7123d, but the rear cover 7402 of the camera body 7400 is not provided with the recessed sloped surface 7123d. Other configurations of the camera body 7400 are the same as those of the camera body 7100, so description thereof will be omitted.

Next, the configuration of the heat dissipation module 7500 will be described. A front contact surface 7505a exposed to the exterior of the front contact portion holder 7505 is located inside (Z-axis negative direction side) the exposed portion 7501a of the heat dissipation surface contact prevention member 7501 . The heat-dissipating surface contact prevention member 7501 is disposed movably in the Z-axis direction, and when pressed in the Z-axis negative direction, is housed at a position on the Z-axis negative direction side of the front contact surface 7505a. It has become so. Specifically, the heat radiation surface contact prevention member 7501 is provided with a hole 7501 b that engages with a boss 7502 a of the heat sink 7502 . A compression spring 7503 is arranged between the heat sink 7502 and the heat radiation surface contact prevention member 7501 so as to be supported by the boss 7502a. The heat radiation surface contact prevention member 7501 is provided with a hollow portion 7501 c that covers the front contact portion holder 7505 . The front cover 7504 is provided with an opening 7504a through which the exposed portion 7501a of the heat dissipation surface contact prevention member 7501 can pass. With these configurations, the heat radiation surface contact prevention member 7501 is urged in the Z-axis positive direction by the compression spring 7503 to a position where the contact surface 7501d contacts the contact surface 7504b of the front cover 7504 . When the heat radiation surface contact prevention member 7501 is pressed in the Z-axis negative direction against this biasing force, the compression spring 7503 is compressed, and the contact surface 7501e is pushed to the position where it contacts the contact surface 7502b of the heat sink 7502 .

As shown in FIG. 54(a), in the camera body 7400, the contact portion contact surface 7401a of the electrical contact portion holder 7401 is exposed to the outside outside the rear cover 7402 (on the Z-axis positive direction side). Also, before and after the heat dissipation module 7500 is attached to and detached from the camera body 7400, the front contact surface 7505a of the front contact holder 7505 of the heat dissipation module 7500 is on the rear side (Z-axis negative direction side) of the heat dissipation surface contact prevention member 7501, and is visible in appearance. Exposed. As shown in FIG. 54(b), when the heat dissipation module 7500 is connected to the camera body 7400, the electrical contact portion 7120 and the front electrical contact portion 7220 are electrically and mechanically connected. At this time, the exposed portion 7501a of the heat radiation surface contact prevention member 7501 is pressed in the Z-axis negative direction by the rear cover 7402 due to the above-described configuration. As a result, the front contact surface 7505a protrudes forward from the heat radiation surface contact prevention member 7501 and contacts the contact portion contact surface 7401a, so that the heat of the camera body 7400 can be transmitted to the heat radiation module 7500. become.

The method of connecting the camera body 7400 and the heat radiation module 7500, the mode of heat transfer from the camera body 7400 to the heat radiation module 7500, and the mode of heat radiation to the outside air by the heat radiation module 7500 are the same as in the ninth embodiment. Description is omitted. Further, in the tenth embodiment, a retraction mechanism is provided around the front contact holder 7505 in the heat dissipation module 7500, but a retraction mechanism may be provided around the electrical contact holder 7401 in the camera body 7400. Further, both the camera body 7400 and the heat dissipation module 7500 may be provided with similar retraction mechanisms.

As described above, in the tenth embodiment, as in the ninth embodiment, the user touches the heated front contact holder 7505 and electrical contact holder 7401 before and after attaching/detaching the heat dissipation module 7500 to/from the camera body 7400. can prevent Also, in the tenth embodiment, heat generated in the camera body 7400 can be efficiently discharged from the heat radiation module 7500 as in each of the above embodiments.

<Eleventh Embodiment>
FIG. 55(a) is a schematic front perspective view of a camera body 7600 and a heat radiation module 7700 that constitute a system camera according to the tenth embodiment. FIG. 55(b) is a schematic rear perspective view of a camera body 7600 and a heat dissipation module 7700 that constitute the system camera according to the tenth embodiment. FIGS. 56A and 56B are exploded perspective views of the heat dissipation module 7500, and the views of the heat dissipation module 7500 are different in each figure. FIG. 57(a) is a side view illustrating the structure of the movable module 7710 and its surroundings when the movable module 7710 of the heat dissipation module 7500 is in the unlocked position. FIG. 57(b) is a side view illustrating the structure of the movable module 7710 and its surroundings when the movable module 7710 of the heat dissipation module 7500 is in the locked position.

FIG. 58(a) is a partial cross-sectional view showing the state before the heat radiation module 7700 is connected to the camera body 7600, and is a ZX cross section (Y axis ) are shown. FIG. 58(b) is a partial cross-sectional view of a state in which the heat dissipation module 7700 is connected to the camera body 7600, and the rear side of the camera body 7100 and the ZX cross section (plane perpendicular to the Y axis) of the heat dissipation module 7200 are aligned. It is shown. The cross-sectional positions in FIGS. 58(a) and (b) are the same as the cross-sectional positions in FIGS. 51(a) and (b), respectively. FIG. 59 is a rear view of the camera body 7600 with the heat radiation module 7700 connected. FIG. 60(a) is a cross-sectional view taken along line N1-N1 shown in FIG. FIG. 60(b) is a cross-sectional view taken along line N2-N2 shown in FIG.

The major difference between the eleventh embodiment and the ninth embodiment described above is that the heat dissipation module 7700 is attached to and detached from the camera body 7600 and the heat dissipation module 7700 is provided with a movable module 7710 . The configurations of the camera body 7600 and the heat radiation module 7700 will be described below, focusing on these differences. Components of the camera body 7600 and the heat radiation module 7700, which are common to the camera body 7100 and the heat radiation module 7200 described in the ninth embodiment, are denoted by the same reference numerals in FIGS. duplicate explanations are omitted.

As shown in FIG. 55(b), the rear cover 7602 of the camera body 7600 is provided with an engaging portion 7602a for fixing the heat radiation module 7700. As shown in FIG. Further, as shown in FIG. 55(a), the front cover 7703 of the heat dissipation module 7700 is provided with an engaged portion 7703a that engages with the engaging portion 7602a. As shown in FIGS. 59 and 60, the engaging portion 7602a and the engaged portion 7703a are engaged by sliding the heat radiation module 7700 with respect to the camera body 7600 from the Y-axis positive direction side to the Y-axis negative direction side. It has a possible structure.

In a state where the engaging portion 7602a and the engaged portion 7703a are engaged and the lock knob 7701 is in the unlocked position, the heat radiation module 7700 can be moved in the positive direction of the Y axis with respect to the camera body 7600. Yes, but movement in the X-axis and Z-axis directions is restricted. In other words, the heat dissipation module 7700 can be attached to and detached from the camera body 7600 while the lock knob 7701 is in the unlocked position.

The lock knob 7701 is provided on the side surface of the heat dissipation module 7700 on the negative side of the X-axis, and is slidable in the Z-axis direction. As shown in FIG. 55(a), when the lock knob 7701 is in the unlocked position (negative Z-axis direction), the contact surface 7702a of the front contact holder 7702 is located closer to the rear side (negative Z-axis direction) than the front cover 7703. ) is exposed to the exterior. On the other hand, as shown in FIG. 55(b), the contact portion contact surface 7601a of the electrical contact portion holder 7601 of the camera body 7600 is exposed to the outside from the rear cover 7602 inside (the Z-axis positive direction side). Therefore, when the lock knob 7701 is in the unlocked position, the heat radiation module 7700 can be attached to and detached from the camera body 7600 as described above. In this state, the contact surface 7702a of the front contact holder 7702 of the heat dissipation module 7700 is not in contact with the contact contact surface 7601a of the electrical contact holder 7601 of the camera body 7600, as shown in FIG. 58(a).

When the lock knob 7701 is slid in the Z-axis positive direction from the unlocked position, the lock knob 7701 moves to the locked position. In a state where the engaging portion 7602a and the engaged portion 7703a are engaged to connect the heat radiation module 7700 to the camera body 7600, the lock knob 7701 is slid from the unlocked position to the locked position. Then, the movable module 7710 arranged inside the heat radiation module 7700 moves together with the lock knob 7701 in the Z-axis positive direction. Details of the configuration of the movable module 7710 will be described later. As a result, as shown in FIG. 58(b), the contact surface 7702a of the front contact holder 7702 comes into contact with the contact contact surface 7601a of the electrical contact holder 7601, and the transmission from the electrical contact holder 7601 to the front contact holder 7702 is caused. heat is available. Since the mode of heat transfer from the camera body 7600 to the heat dissipation module 7700 and the mode of heat dissipation in the heat dissipation module 7700 are the same as in the ninth embodiment, description thereof will be omitted.

At this time, as shown in FIG. 60(a), the retaining projection 7702b formed on the front contact holder 7702 and the retaining recess 7601b formed on the electrical contact holder 7601 are engaged. This can prevent the heat dissipation module 7700 from coming off the camera body 7600 in the Y-axis direction. That is, when the movable module 7710 is moved to the locked position, the movement of the heat dissipation module 7700 relative to the camera body 7600 in the X-axis direction, Y-axis direction and Z-axis direction is restricted. Furthermore, when the lock knob 7701 moves from the unlocked position to the locked position, the electrical contact portion 7120 of the camera body 7600 and the front electrical contact portion 7220 of the heat dissipation module 7700 are mechanically and electrically connected.

Next, the configuration of the heat radiation module 7700 will be described mainly with reference to FIGS. 56 and 57. FIG. As shown in FIG. 56, the movable module 7710 includes a front contact holder 7702, a front contact substrate 7221 on which a front electrical contact 7220 is mounted, a heat sink 7704, a fan 7203, and a It is composed of a heat sink 7224 . One end of the torsion spring 7705 is attached to a spring hooking portion 7704 a provided on the heat sink 7704 . The other end of the torsion spring 7705 is attached to the spring attachment portion 7703 c of the front cover 7703 . The front cover 7703 is provided with an opening 7703b through which the front contact holder 7702 can pass.

In FIG. 57, the front cover 7703 is not shown in order to explain the locked position/unlocked position. When the lock knob 7701 is operated to the rear side (Z-axis negative direction side), the biasing force of the torsion spring 7705 to the rear side is transmitted to the heat sink 7704 (movable module 7710) via the spring hooking portion 7704a of the heat sink 7704. As a result, the front contact holder 7702 is hidden behind the front cover 7703 . When the lock knob 7701 is operated to the front side (positive direction of the Z axis), the biasing force of the torsion spring 7705 toward the front side (positive direction of the Z axis) is applied to the heat sink 7704 (movable module 7710). As a result, the front contact holder 7702 projects forward from the front cover 7703 .

The heat dissipation module 7700 has a rear heat transfer module 7720 . As shown in FIG. 56, the rear heat conduction module 7720 includes a rear contact heat dissipation plate 7244, a rear contact substrate 7241 on which the rear electrical contact 7240 is mounted, and a rear contact, which are arranged in order in the negative direction of the Z-axis. A rear protection member 7239 and a rear contact holder 7242 are provided. When a module containing a heat generating portion is further connected to the rear side of the heat dissipation module 7700 , the heat generated by the module is transferred to the rear heat conduction module 7720 via the rear contact holder 7242 . Here, in the heat dissipation module 7700 , the movable module 7710 and the rear heat conduction module 7720 are connected by the variable heat conduction sheet 7706 . Therefore, heat can be transferred from the rear heat conduction module 7720 to the movable module 7710 .

As described above, in the eleventh embodiment, the contact portion contact surface 7601a of the electrical contact portion holder 7601 of the camera body 7600 is exposed to the outside from inside the rear cover 7602 . Also, in the heat dissipation module 7700, the front contact holder 7702 retracts inside when not in use, and protrudes toward the camera body 7600 while being connected to the camera body 7600. FIG. Such a configuration can prevent the user from touching the electric contact holder 7601 and the front contact holder 7702 whose temperature has risen before and after the heat dissipation module 7700 is attached to and detached from the camera body 7600 . Further, the connection between the front contact holder 7702 and the electrical contact holder 7601 and the locking of the heat radiation module 7700 to the camera body 7600 can be performed by one operation of the lock knob 7701, thereby improving operability. Furthermore, in the eleventh embodiment, heat generated in the camera body 7600 can be efficiently discharged from the heat dissipation module 7700 as in each of the above embodiments. In addition, when a module is connected to the rear side of the heat dissipation module 7700, the heat generated in the module can be transmitted to the heat dissipation module 7700 and radiated.

In addition, in the eleventh embodiment, the heat radiation module 7700 is provided with the movable module 7710 . Without being limited to this, the camera body 7600 may have a mechanism for retracting the electrical contact holder 7601 from the rear cover 7602 . Further, the heat radiation module 7700 may have a retraction mechanism for the front contact holder 7702 and the camera body 7600 may have a retraction mechanism for the electrical contact holder 7601 .

Although the present invention has been described in detail based on its preferred embodiments, the present invention is not limited to these specific embodiments, and various forms without departing from the gist of the present invention can be applied to the present invention. included. Furthermore, each embodiment described above merely shows one embodiment of the present invention, and it is also possible to combine each embodiment as appropriate. For example, in the above embodiment, the modules capable of dissipating heat can be detachably attached to the back side and the bottom side of the camera body. However, the present invention is not limited to this. good.

100 system camera 101 heat dissipation module 102 camera body 103 lens unit 104 battery pack 107 battery terminal 115 rear heat dissipation part 116 heat receiving part 303 heat sink 304 opening 306 heat dissipation fin 402 image sensor 500 rig 705 male side interface 706 female side interface 805 heating element 807 Main heat sink 808 First heat sink 809 Second heat sink 812 Side heat sink 851 Bottom heat sink 920 Rear cover

Claims (4)

An imaging system comprising an imaging device, a heat dissipation module connected to the imaging device, and a rig connected to the imaging device and used when a user carries the imaging device on the shoulder ,
The imaging device is
a first heat-generating part arranged inside ;
a second heat-generating part arranged inside;
a first heat radiating part exposed to the outside and radiating heat generated in the first heat generating part and transferred through the first heat transfer path ;
a second heat radiating part that is exposed to the outside and radiates heat generated in the second heat generating part and transferred through a second heat transfer path different from the first heat transfer path ,
The heat dissipation module is
a first heat receiving portion in contact with the first heat radiating portion;
a heat sink that is thermally connected to the first heat-receiving part and dissipates heat transferred from the first heat- radiating part to the first heat- receiving part;
The rig is
a pad portion that contacts the user's shoulder;
a grasping part for a user to grasp by hand;
a second heat receiving portion in contact with the second heat radiating portion;
an imaging system comprising: a base that is thermally connected to the second heat receiving section and that radiates heat transferred from the second heat radiating section to the second heat receiving section to the outside air . 2. The image pickup system according to claim 1 , wherein a communication interface and/or a power interface are provided on a surface of the image pickup device to which the heat radiation module is connected. 3. The imaging system according to claim 2 , wherein said communication interface is capable of transmitting image data with a resolution of 4K or higher. 4. The imaging system according to claim 2 , wherein the communication interface is capable of transmitting image data at a frame rate of 60P or higher.

Images