Electronic apparatus, cooling device, and electronic apparatus system

Abstract

To cool an electronic apparatus while preventing dew condensation on the electronic apparatus with a simple configuration.SOLUTION: An electronic component 133 that is a heat generation source in a camera body 100 is mounted on a second circuit board 132, and the electronic component 133 and a heat dissipation member 135 are thermally connected by a first heat transfer member 134. When a water-cooling accessory 200 is attached to the camera body 100, an accessory heat receiving member 203 and the heat dissipation member 135 are thermally connected to each other.SELECTED DRAWING: Figure 3B

Description

[Technical Field]

[0001] The present invention relates to an electronic device, a cooling device, and an electronic device system. [Background technology]

[0002] Conventionally, electronic devices have been provided with a heat dissipation structure to suppress temperature rise, as the amount of heat generated increases due to increased power consumption associated with higher functionality and the miniaturization of electronic components.

[0003] For example, Patent Document 1 discloses a camera cooling system that includes a camera, which is an electronic device, and a detachable air-blowing accessory. The air-blowing accessory has intake and exhaust ports that lead to the interior of the camera. When attached to the camera, the air-blowing accessory creates an air flow in the camera's internal space, cooling the interior and exterior of the camera.

[0004] Patent Document 2 discloses a method of circulating a refrigerant from a cooling unit provided separately from the electronic device to the electronic device, thereby cooling the housing of the electronic device with the refrigerant. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-198447 [Patent Document 2] Japanese Patent Application Laid-Open No. 2009-158803 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the technology of Patent Document 1 requires a power supply to drive the fan, which complicates the configuration. Furthermore, the technology of Patent Document 2 circulates a refrigerant to cool electronic devices, but there is a risk of condensation occurring if there is a large temperature difference between the components to be cooled and the refrigerant. Furthermore, a pump, tubes, power supply, etc. are required to circulate the refrigerant, which complicates the device.

[0007] An object of the present invention is to cool an electronic device while suppressing condensation on the electronic device with a simple configuration. [Means for solving the problem]

[0008] In order to achieve the above object, the electronic device of the present invention is an electronic device to which a cooling device can be attached or detached, and is characterized in that it has an electronic component that is a heat source, a heat dissipation member having thermal conductivity, and a first heat transfer member that thermally connects the electronic component and the heat dissipation member, and when the cooling device is attached, the heat receiving member of the cooling device and the heat dissipation member are thermally connected. [Effects of the Invention]

[0009] According to the present invention, it is possible to cool an electronic device while suppressing condensation on the electronic device with a simple configuration. [Brief explanation of the drawings]

[0010] [Figure 1A] FIG. 2 is a front perspective view of the electronic device. [Figure 1B] FIG. 2 is a rear perspective view of the electronic device. [Figure 1C] FIG. 2 is a vertical cross-sectional view of the camera body. [Figure 2A] FIG. 2 is an external perspective view of the water cooling accessory. [Figure 2B] FIG. 2B is a cross-sectional view taken along line AA in FIG. 2A. [Figure 3A] FIG. 2 is a front perspective view of the camera system. [Figure 3B] FIG. 2 is a cross-sectional view of the camera system. [Figure 4] FIG. 1 is a block diagram of a camera system. [Figure 5A] FIG. 2 is a rear perspective view of the camera body. [Figure 5B] FIG. 2 is a rear perspective view of the camera body. [Figure 5C] FIG. 2 is a vertical cross-sectional view of the camera body. [Figure 6A] FIG. 2 is a rear perspective view of the water cooling accessory. [Figure 6B] This is a view of the water cooling accessory from the -Z side. [Figure 6C] FIG. 6C is a cross-sectional view taken along line BB in FIG. 6B. [Figure 7A] FIG. 2 is a rear perspective view of the camera system. [Figure 7B] FIG. 2 is a cross-sectional view of the camera system. [Figure 8A] FIG. [Figure 8B] FIG. 8B is a cross-sectional view taken along line CC in FIG. 8A. [Figure 9A] FIG. 2 is a rear perspective view of the water cooling accessory. [Figure 9B] This is a view of the water cooling accessory from the +Y side. [Figure 9C] FIG. 9C is a cross-sectional view taken along line DD in FIG. 9B. [Figure 10A] FIG. 2 is a front perspective view of the camera system. [Figure 10B] FIG. 10B is a cross-sectional view taken along line EE in FIG. 10A. [Figure 11] FIG. 10 is a schematic diagram showing a modified example of the containment vessel. [Figure 12] FIG. 10 is a perspective view of a heat sink according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0012] (First embodiment) 1A and 1B are respectively a front perspective view and a rear perspective view of an electronic device according to a first embodiment of the present invention. In this embodiment, a camera body 100, which is an imaging device, is exemplified as the electronic device.

[0013] Hereinafter, the directions of each part will be referred to based on the X, Y, and Z coordinate axes shown in Fig. 1A and elsewhere. For convenience, the subject side will be referred to as the front in a direction parallel to the center of the optical axis of an interchangeable lens (not shown) attached to camera body 100. Therefore, for example, in Fig. 1A, the +Y direction is upward and the +Z direction is forward. The +X direction is to the right when viewed from the subject side.

[0014] FIG. 1C is a longitudinal cross-sectional view of camera body 100 taken along the YZ plane including the optical axis.

[0015] A display unit 101 is provided on the back of camera body 100. Display unit 101 is attached to camera body 100 so that it can be opened, closed, and rotated, and displays images generated by capturing images and various information related to the capturing. Display unit 101 is equipped with a touch panel and can detect touch operations by the user on its display surface (operation surface).

[0016] An outside-finder display unit 102 provided on the top surface of the camera body 100 can display the setting values ​​of various imaging parameters such as shutter speed and aperture. A shutter button 103 is an operating member that the user operates to instruct the camera body 100 to capture an image. A mode selector switch 104 is an operating member that the user operates to switch between various modes.

[0017] The terminal cover 105 is a cover that protects a connector to which a connection cable extending from an external device (not shown) is connected. The main electronic dial 106 is an operating member that the user rotates to change the setting values ​​of the imaging parameters. The power switch 107 is an operating member that the user operates to turn the power of the camera body 100 on and off. The sub electronic dial 108 is an operating member that the user operates to move a selection frame such as a focus (AF) frame or to scroll through images.

[0018] A multi-controller 109 is provided on the back of the camera body 100. The multi-controller 109 is configured to allow input by pressing the key tops and tilting them up, down, left, right, and diagonally. By operating the multi-controller 109, the user can move a selection frame and select items in various menus.

[0019] The rear electronic dial 110 is an operating member that the user operates to move the selection frame or to advance through images. The rear electronic dial 110 is located in a position that allows the user to operate it intuitively while playing back captured images on the display unit 101, and is also easy to operate even when the user holds the camera body 100 vertically. A SET button 111 is provided in the center of the rear electronic dial 110. The SET button 111 is a push-button type operating member that the user operates to confirm a selection item, etc.

[0020] The video button 112 is an operation member that the user operates to start and stop video recording. The button group A113 is an operation member related to focus and exposure, and includes an AF start button, an AE lock button, and an AF frame selection button arranged on the left and right. When the camera is in standby for image capture, the user can start AF, change the AF frame, or fix the exposure by pressing the button group A113.

[0021] The button group B114 includes an L-shaped zoom button, an information display button, and a quick setting button. In the live view display state in the image capture mode, the user can switch ON / OFF the zoom in of the live view display image by operating the zoom in / out button. In the playback mode, the user can switch ON / OFF the zoom in of the captured image being played back by operating the zoom in / out button. The user can switch the display method of the information displayed on the display unit 101 by operating the information display button. The user can immediately transition the display on the display unit 101 to a screen for changing the setting values ​​of the image capture parameters by operating the quick setting button.

[0022] The button group C115 includes a play button and a delete button. The user can switch between image capture mode and playback mode by operating the play button. When the play button is operated in image capture mode, the mode switches to playback mode, and the most recent captured image among the captured images recorded on a recording medium (not shown) can be displayed on the display unit 101. When a user selects a captured image in playback mode, the selected captured image can be deleted by operating the delete button.

[0023] The button group D116 includes a menu button and a rating button. When the user operates the menu button, a menu screen displaying configurable items is displayed on the display unit 101. The user can intuitively select and set items by touching the menu screen displayed on the display unit 101 or by operating the multi-controller 109, the rear electronic dial 110, or the SET button 111. In playback mode, the user can rate a playback image by operating the rating button.

[0024] An interchangeable lens (not shown) is removably attached to the mount section 117. A communication terminal 118 provided inside the mount section 117 is used for communication between the camera body 100 and the interchangeable lens.

[0025] Finder 119, located at the top of the back of camera body 100, is an electronic viewfinder that allows a user looking through it to view a live view display image, etc. An eyepiece detection unit is provided within finder 119, and the eyepiece detection unit can detect that the user is looking through (putting their eye close to) finder 119. Eyepiece cover 121 is a rubber member that comes into contact with the face around the eyes of the user looking through finder 119.

[0026] Grip section 122 is a gripping section shaped to be easily gripped with the right hand of a user holding camera body 100. Card cover 123 is a cover that covers media slot 153 (see FIG. 4) that stores media. Card cover 123 is provided on the part of grip section 122 that comes into contact with the palm of the user's hand.

[0027] Tripod mount 125 is an attachment member used when attaching external accessories to the bottom surface of camera body 100. Bottom exterior member 137 is an exterior member that constitutes part of the bottom surface of camera body 100, among the exterior members of camera body 100. Bottom exterior member 137 has an opening (not shown), and this opening has a shape that allows body cover 124 to be attached. Body cover 124 is attached to the opening of bottom exterior member 137, and is a protective member that protects heat dissipation member 135 (FIG. 1C) exposed from the exterior.

[0028] As will be described later, a water-cooling accessory 200 (FIGS. 2A and 2B) serving as a cooling device can be attached to and detached from the camera body 100. First, the internal configuration of the camera body 100 will be described.

[0029] 1C, an imaging element 131 such as a CMOS or CCD, which is a heat source, is mounted on first circuit board 130. Electronic components 133 such as a CPU (central processing unit) and DRAM, which are examples of electronic components that are heat sources, are mounted on second circuit board 132. A first heat transfer member 134 made of a highly thermally conductive material such as aluminum sheet metal, copper sheet metal, or a heat pipe is disposed between first circuit board 130 and second circuit board 132 in the Z direction.

[0030] The imaging element 131 of the first circuit board 130 and the first heat transfer member 134 are thermally connected by a heat transfer member (not shown) such as a heat dissipation rubber or a graphite sheet. Heat from the imaging element 131 of the first circuit board 130 is transferred to the first heat transfer member 134 via the heat transfer member (not shown).

[0031] Electronic components 133 of second circuit board 132 and first heat transfer member 134 are thermally connected by a heat transfer member (not shown) such as heat dissipation rubber or a graphite sheet. Heat from electronic components 133 of second circuit board 132 is transferred to first heat transfer member 134 via the heat transfer member (not shown).

[0032] The first heat transfer member 134 and the heat dissipation member 135 are thermally connected by screws (not shown) etc. Therefore, the heat from the imaging element 131 and the electronic components 133, which are the main heat sources, is transferred to the heat dissipation member 135 via the first heat transfer member 134.

[0033] In this embodiment, a metal plate is used for first heat transfer member 134, but a heat transfer member such as a graphite sheet may also be used. Also, heat may be transferred directly from first circuit board 130 and second circuit board 132 to heat dissipation member 135 using a heat transfer member other than first heat transfer member 134.

[0034] The heat dissipation member 135 has thermal conductivity. The heat dissipation member 135 is made of a highly thermally conductive material such as aluminum, magnesium, or copper. The main body cover 124 is an example of a lid member that can be attached to and detached from the bottom exterior member 137. When the main body cover 124 is removed, a portion of the heat dissipation member 135 is exposed from the opening of the bottom exterior member 137. When the main body cover 124 is attached to the opening of the bottom exterior member 137, the main body cover 124 covers the heat dissipation member 135, and the heat dissipation member 135 is not exposed from the bottom exterior member 137.

[0035] Attaching the body cover 124 reduces the likelihood of the user accidentally touching the exposed portion of the heat dissipation member 135 when the water-cooled accessory 200 is not attached, which can cause discomfort. Note that the body cover 124 may not be provided, and the exposed portion of the heat dissipation member 135 exposed from the bottom exterior member 137 may be recessed more deeply to make it more difficult for the user to accidentally touch it.

[0036] Main body member 138 is a main component constituting camera body 100, and is a component other than heat dissipation member 135. Heat dissipation member 135 and main body member 138 are thermally connected by second heat transfer member 136 made of heat dissipation rubber, graphite sheet, or the like. Heat transferred from image sensor 131 and electronic components 133 to heat dissipation member 135 is transferred to main body member 138 by second heat transfer member 136, and then transferred to the entire camera body 100 via main body member 138.

[0037] This prevents heat from the imaging element 131 and electronic components 133 from being trapped in the heat dissipation member 135 when the water-cooled accessory 200 is not attached, thereby reducing an excessive rise in temperature of the imaging element 131 and electronic components 133. Note that the heat transferred to the heat dissipation member 135 is not limited to the main body member 138, and may be transferred to other members such as an exterior member or an internal metal plate.

[0038] Note that multiple second heat transfer members 136 may be provided to transfer heat from heat dissipation member 135 to the entire camera body 100. For example, heat from heat dissipation member 135 may be transferred to main body member 138 at multiple locations rather than just one location. Alternatively, second heat transfer members 136 may be provided at multiple locations so that heat is transferred to exterior members or other members in addition to main body member 138.

[0039] In this embodiment, bottom exterior member 137 and heat dissipation member 135 are disposed on the bottom surface of camera body 100. However, this is not limiting, and they may be disposed on a surface (for example, the top surface or side surface of camera body 100) perpendicular to the thickness direction (Z direction) of first circuit board 130 and second circuit board 132.

[0040] Fig. 2A is a perspective view of the exterior of the water cooling accessory 200. Fig. 2B is a cross-sectional view taken along line AA in Fig. 2A. Note that the designations of directions relating to the water cooling accessory 200 are based on the state in which the water cooling accessory 200 is attached to the camera body 100.

[0041] The configuration of the water-cooled accessory 200 will be described. The water-cooled accessory 200 includes an accessory exterior 201, a tripod screw 202, and two accessory heat-receiving members 203 (FIG. 2A). The accessory exterior 201 is an exterior member that constitutes the exterior of the water-cooled accessory 200, and is composed of an upper accessory exterior 201a and a lower accessory exterior 201b.

[0042] A part of the accessory heat receiving member 203 is exposed from the upper accessory exterior 201a. That is, the accessory heat receiving member 203 is exposed by protruding upward (toward the +Y side) from the upper accessory exterior 201a in a convex shape. Note that, although two accessory heat receiving members 203 are provided, this is not limiting, and the accessory heat receiving members 203 may be provided in one location or in three or more locations depending on the arrangement area of ​​the heat dissipation member 135 provided on the camera body 100.

[0043] The water cooling accessory 200 further includes a storage container 204 (storage unit) that stores a coolant 206 and a heat sink 205 (thermal diffusion unit) that transfers heat to the coolant 206 (FIG. 2B).

[0044] In this embodiment, the storage container 204 also serves as the lower accessory exterior 201b. However, the present invention is not limited to this, and the accessory exterior 201 may be provided on the outside of the storage container 204. In this case, the storage container 204 is fixed to the accessory exterior 201 with screws (not shown) or the like, and is thermally connected to the storage container 204.

[0045] The accessory heat receiving member 203 and the heat sink 205 are fixed and thermally connected to each other by a heat sink fixing part 207. The heat sink 205 and the coolant 206 are also thermally connected. In addition to receiving heat from inside the camera body 100, the accessory heat receiving member 203 also serves as a heat transfer path for transferring that heat to the heat sink 205.

[0046] In this embodiment, the accessory heat-receiving member 203 and the heat sink 205 are separate components. However, the accessory heat-receiving member 203 and the heat sink 205 may be integrally configured without providing the heat sink fixing portion 207.

[0047] The accessory heat receiving member 203 is attached in a manner that penetrates the upper accessory exterior 201a, and has a liquid seal 208 to prevent the refrigerant 206 from leaking to the outside. The liquid seal 208 is formed of an elastic material, and the position of the accessory heat receiving member 203 can be finely adjusted in the vertical direction (Y direction) by the liquid seal 208. Therefore, the liquid seal 208 plays a role in increasing the adhesion between the heat dissipation member 135 of the camera body 100 and the accessory heat receiving member 203 of the water-cooled accessory 200, thereby reducing thermal resistance.

[0048] The heat sink 205 has multiple fins for efficiently transferring heat to the coolant 206. To ensure heat dissipation regardless of the orientation (posture) of the water cooling accessory 200, the fins of the heat sink 205 are not exposed to the air in any position and are arranged so as to be filled with the coolant 206. Note that the heat sink 205 can efficiently transfer heat to the coolant 206 by increasing the surface area of ​​the fins. Therefore, the pitch and length of the fins of the heat sink 205 are designed to be optimal depending on the size of the containment vessel 204 and the type of refrigerant 206.

[0049] The refrigerant 206 is water as an example, but other liquids with large heat capacity may also be used. It is known that water expands due to freezing at low temperatures. When the refrigerant 206 is water, in order to prevent damage to the containment vessel 204 due to freezing at low temperatures, a smaller amount of refrigerant 206 may be added to the containment vessel 204 in consideration of expansion due to freezing. This reduces the possibility of damage to the containment vessel 204 even if the refrigerant 206 freezes at low temperatures. Note that a refrigerant with a low freezing point, such as ethylene glycol, may also be used as the refrigerant 206. Using a refrigerant with a low freezing point can take measures against the expansion due to freezing mentioned above.

[0050] Because the containment vessel 204 and the heat sink 205 are constantly in contact with the refrigerant 206, it is desirable to select the materials thereof according to the type of refrigerant 206. For example, when ethylene glycol or the like is used as the refrigerant 206, ethylene glycol is an organic solvent, and therefore materials such as metal are suitable for the containment vessel 204 and the heat sink 205. Furthermore, when water is used as the refrigerant 206, the containment vessel 204 and the heat sink 205 may be made of a rust-resistant material or may be coated to prevent rust.

[0051] By attaching the water cooling accessory 200 to the camera body 100, a camera system 1000 (electronic device system) is configured.

[0052] Fig. 3A is a front perspective view of camera system 1000 in which water cooling accessory 200 is attached to camera body 100. Fig. 3B is a cross-sectional view of camera system 1000 taken along the same cross section as Fig. 2B.

[0053] The water cooling accessory 200 is configured to be detachably attached to the bottom surface of the camera body 100. When attaching the water cooling accessory 200, the user removes the body cover 124 (FIG. 1B) from the camera body 100 so that the heat dissipation member 135 is visible from the outside. Therefore, a portion of the heat dissipation member 135 is exposed from the bottom exterior member 137. The user can then attach the water cooling accessory 200 to the camera body 100 by screwing the tripod screw 202 (FIG. 2A) of the water cooling accessory 200 into the tripod mount 125 (FIG. 1C) of the camera body 100.

[0054] When the water-cooled accessory 200 is attached to the camera body 100, the heat dissipation member 135 of the camera body 100 and the accessory heat-receiving member 203 of the water-cooled accessory 200 come into contact with each other and are thermally connected to each other. This allows heat from the camera body 100 to be transferred to the water-cooled accessory 200.

[0055] The water cooling accessory 200 is provided with a body cover storage section 210 (FIG. 3A). The body cover storage section 210 can store the body cover 124 that has been removed from the camera body 100. By storing the body cover 124 that has been removed from the camera body 100 in order for the user to attach the water cooling accessory 200 in the body cover storage section 210, convenience is improved.

[0056] The way heat is transferred will be described in detail. Heat from the image sensor 131 and electronic components 133 of the camera body 100 is transferred to the heat dissipation member 135 via a heat transfer member (not shown) and a first heat transfer member 134. When the water-cooled accessory 200 is attached to the camera body 100, heat from the heat dissipation member 135 of the camera body 100 is transferred to the accessory heat receiving member 203 of the water-cooled accessory 200.

[0057] The heat transferred to the accessory heat-receiving member 203 is transferred to the heat sink 205, and then transferred from the heat sink 205 to the refrigerant 206. The heat of the refrigerant 206 is transferred to the containment vessel 204 (lower accessory exterior 201b) and is radiated into the atmosphere from the outer surface of the lower accessory exterior 201b.

[0058] The heat capacity of water is extremely high compared to metals of a similar volume. When water is used as the refrigerant 206, the refrigerant 206 can store a large amount of heat. This allows the heat from the image sensor 131 and electronic components 133 of the camera body 100 to be efficiently stored in the refrigerant 206, suppressing temperature increases in the image sensor 131 and electronic components 133 and enabling an extension of the shooting time.

[0059] In a typical circulating water-cooling system, a chilled refrigerant directly cools heat-generating parts inside the camera body 100, which can cause condensation due to rapid cooling. However, in this embodiment, the chilled refrigerant is not transferred directly to the heat-generating parts, but rather the heat of the camera body 100 is transferred to the water-cooling accessory 200 for indirect cooling, which makes it difficult for the image sensor 131 and electronic components 133 to cool rapidly. This reduces the possibility of condensation on the image sensor 131 and electronic components 133. Furthermore, a simple configuration is possible because the pump, power supply, and tubes for circulating the refrigerant, which are required in circulating water-cooling systems, are not required.

[0060] As described above, in camera body 100, heat transferred to heat dissipation member 135 is transferred to the entire camera body 100 via second heat transfer member 136 and main body member 138. This reduces the problem of heat being trapped in heat dissipation member 135 and making it difficult for the image sensor 131 and electronic components 133 to cool down when water-cooled accessory 200 is not attached.

[0061] On the other hand, when the water cooling accessory 200 is attached to the camera body 100, heat is transferred to the lower temperature side, so that the heat from the camera body 100 is mainly transferred to the water cooling accessory 200, thereby preventing the temperature of the camera body 100 from rising.

[0062] FIG. 4 is a block diagram of the camera system 1000 (camera body 100 and water cooling accessory 200).

[0063] In camera body 100, CPU 133a is included in electronic component 133. CPU 133a sends various instructions to each circuit section and controls the operation of the entire camera body 100. Various heat-generating components such as electronic component 133 are mounted on second circuit board 132. Second circuit board 132 is a printed wiring board (PWB) on which many of the various electric circuits (detection circuits, control circuits, processing circuits) including a camera microcomputer are mounted. CPU 133a controls each functional block of camera body 100 and performs the necessary calculations in accordance with a computer program loaded from memory.

[0064] A power supply 150 supplies power to each circuit section within the camera body 100. The image sensor 131 is composed of a CCD or CMOS sensor, and converts an optical image of a subject into an image signal. The image signal obtained by the image sensor 131 is converted into image data by an image processing section 151 and output to the CPU 133a. The memory 152 stores captured images and various data.

[0065] A shutter 156 is disposed in front of the image sensor 131, and the shutter 156 adjusts the exposure time of the image sensor 131. A shutter control unit 154 drives the shutter 156 based on a signal input from the CPU 133a. The mode changeover switch 104 is operated by the user. When the mode changeover switch 104 is operated, an operation detection unit 157 outputs a signal to the CPU 133a, and shooting conditions such as exposure and shutter speed are changed.

[0066] The water cooling accessory 200, like the camera body 100, has an operation member 252 for setting various shooting conditions on the camera body 100 side. An operation signal of the operation member 252 is transmitted via the control board 250 and the connection terminal 251 to the connection terminal 155 on the camera body 100 side and to the CPU 133a on the second circuit board 132.

[0067] Camera body 100 allows the user to select a desired video shooting mode from among multiple video shooting modes by operating mode selector switch 104 and operation member 252. Video shooting modes include, for example, high-quality mode and low-quality mode. When shooting video in high-quality mode, the processing load on image sensor 131 and CPU 133a is heavy, which increases the heat generated by these electronic components and media slot 153, shortening the video shooting time. On the other hand, in low-quality mode, these components generate less heat than in high-quality mode, and the video shooting time is longer.

[0068] According to this embodiment, the electronic components 133 in the camera body 100 are thermally connected to the heat dissipation member 135. When the water-cooled accessory 200 is attached to the camera body 100, the accessory heat receiving member 203 and the heat dissipation member 135 are thermally connected, and heat from the electronic components 133 is transferred to the refrigerant 206. This makes it possible to cool the camera body 100 (electronic device) while suppressing condensation on the camera body 100 with a simple configuration.

[0069] In this embodiment, the heat inside the containment vessel 204 is dissipated to the outside from the outer surface of the containment vessel 204. However, it is also possible to adopt an insulating configuration that does not transfer heat from the inner surface of the containment vessel 204 to the outer surface. In this way, even if the ambient temperature is high, the refrigerant 206 inside the containment vessel 204 is not affected by the high ambient temperature and can still perform its cooling function.

[0070] It is not essential that the refrigerant 206 in the containment vessel 204 be replaceable, but a separate refrigerant exchange unit may be provided to make the refrigerant replaceable. Making the refrigerant 206 replaceable allows the containment vessel 204 to be emptied when the refrigerant 206 is not needed, such as when transporting the device, thereby improving convenience.

[0071] (Second embodiment) The second embodiment of the present invention will now be described with reference to Figures 5 to 7. In each figure, the same components as those in the first embodiment are denoted by the same reference numerals.

[0072] In this embodiment, a camera body 500 is exemplified as an electronic device, and a water cooling accessory 600 (FIG. 6A, etc.) is exemplified as a cooling device. Hereinafter, the directions of each part will be designated based on the X, Y, and Z coordinate axes shown in FIG. 5A, etc. Note that the designations of directions related to the water cooling accessory 600 are based on the state in which the water cooling accessory 600 is attached to the camera body 500.

[0073] 5A and 5B are rear perspective views of camera body 500. Fig. 5A shows a state in which display unit 101 is closed, and Fig. 5B shows a state in which display unit 101 is open. Fig. 5C is a longitudinal cross-sectional view of camera body 500 taken along the YZ plane including the optical axis.

[0074] As shown in FIGS. 5A and 5B , a movable display unit 101 is attached to a rear exterior member 501 that constitutes part of the rear surface of a camera body 500. The display unit 101 is movable between a position where it overlaps the rear surface of the camera body 500 and a position where it does not overlap the rear surface. The rear exterior member 501 houses the closed display unit 101. A heat dissipation member 503 and a locking member 506 are disposed in a recess in the rear exterior member 501. When the display unit 101 is opened, the heat dissipation member 503 becomes visible from the rear exterior member 501. That is, when the display unit 101 is closed and moved to a position where it overlaps the rear surface of the camera body 500, the heat dissipation member 503 is not exposed, and when the display unit 101 is opened and moved to a position where it does not overlap the rear surface, part of the heat dissipation member 503 is exposed.

[0075] 5C, an imaging element 131 such as a CMOS or a CCD, which is a heat source, is mounted on a first circuit board 130. Electronic components 133 such as a CPU or a DRAM, which are also heat sources, are mounted on a second circuit board 132.

[0076] Rear exterior member 501 is provided perpendicular to the Z direction and on the -Z side of second circuit board 132. A heat dissipation member 503 made of a highly thermally conductive material such as aluminum, magnesium, or copper is partially exposed from rear exterior member 501. Note that, in this embodiment, rear exterior member 501 and heat dissipation member 503 are provided on the rear surface of camera body 500, but are not limited to this and may be disposed on the front surface of camera body 500.

[0077] Electronic components 133 of second circuit board 132 and heat dissipation member 503 are thermally connected by first heat transfer member 502 such as heat dissipation rubber or a graphite sheet. Heat from electronic components 133 of second circuit board 132 is transferred to heat dissipation member 503 by first heat transfer member 502.

[0078] 5C , in the Z direction, electronic component 133 is on the surface of second circuit board 132 opposite heat dissipation member 503. Therefore, first heat transfer member 502 and electronic component 133 are arranged in positions facing each other with second circuit board 132 interposed therebetween, and heat is transferred to heat dissipation member 503 via second circuit board 132.

[0079] However, the present invention is not limited to this, and electronic component 133 may be disposed on the -Z side surface of second circuit board 132. In this case, first heat transfer member 502 may be disposed between electronic component 133 and heat dissipation member 503, so that heat from electronic component 133 is transferred to heat dissipation member 503 without passing through second circuit board 132.

[0080] The imaging element 131 and the heat dissipation member 503 may be thermally connected by a heat transfer member such as a heat dissipation rubber or a graphite sheet (not shown).

[0081] 5A and 5B, the rear exterior member 501 has a movable display unit 101 at a position overlapping the heat dissipation member 503 when viewed from the Z direction. Therefore, when the water cooling accessory 600 (FIG. 6A) is not attached, the display unit 101 can be closed to overlap the heat dissipation member 503, thereby reducing the discomfort that the user may feel when accidentally touching the hot heat dissipation member 503. A main body cover may be attached to the rear exterior member 501 so as to cover the exposed portion of the heat dissipation member 503.

[0082] Main body member 504 is a main component constituting camera body 500. Heat dissipation member 503 and main body member 504 are thermally connected by second heat transfer member 505, such as heat dissipation rubber or a graphite sheet, and second circuit board 132. Heat transferred from image sensor 131 and electronic components 133 to heat dissipation member 503 is transferred to main body member 504 via second heat transfer member 505, and then transferred to the entire camera body 500 via main body member 504.

[0083] This prevents heat from the imaging element 131 and electronic components 133 from being trapped in the heat dissipation member 503 when the water-cooled accessory 600 is not attached, thereby reducing an excessive rise in temperature of the imaging element 131 and electronic components 133. Note that the heat transferred to the heat dissipation member 503 is not limited to being transferred to the main body member 504, and may be transferred to other members such as an exterior member or an internal metal plate.

[0084] Fig. 6A is a rear perspective view of the water cooling accessory 600. Fig. 6B is a view of the water cooling accessory 600 as seen from the -Z side. Fig. 6C is a cross-sectional view taken along line BB in Fig. 6B.

[0085] 6C, the water cooling accessory 600 includes accessory exteriors 601a and 601b, an accessory heat-receiving member 603, and a locking claw 609. The accessory heat-receiving member 603 is exposed and protrudes from the accessory exterior 601b toward the +Z side in a convex shape. Note that although there is only one accessory heat-receiving member 603, this is not limiting and multiple accessory heat-receiving members 603 may be provided.

[0086] The water-cooled accessory 600 includes a storage container 604 (storage section) that stores a refrigerant 606, and a heat sink 605 that transfers heat to the refrigerant 606 in the storage container 604. The storage container 604 and the heat sink 605 are housed in accessory exteriors 601a and 601b.

[0087] The accessory heat-receiving member 603 and the heat sink 605 are fixed and thermally connected to each other by a heat sink fixing part 607. The heat sink 605 and the coolant 606 are also thermally connected. The accessory heat-receiving member 603 not only receives heat from inside the camera body 500, but also serves as a heat transfer path for transferring heat to the heat sink 605.

[0088] The accessory heat receiving member 603 is attached in a manner that penetrates the accessory exterior 601b, and has liquid seals 608a and 608b to prevent the refrigerant 606 inside the storage container 604 from leaking out. The liquid seals 608a and 608b are formed of an elastic material, and the position of the accessory heat receiving member 603 can be finely adjusted in the front-to-back direction (Z direction) by the liquid seals 608a and 608b. Therefore, the liquid seals 608a and 608b improve the adhesion between the heat dissipation member 503 of the camera body 500 and the accessory heat receiving member 603, thereby reducing thermal resistance.

[0089] Fig. 7A is a rear perspective view of camera system 2000. Fig. 7B is a cross-sectional view of camera system 2000 taken along the same cross section as Fig. 5C. Camera system 2000 is configured by attaching water-cooling accessory 600 to camera body 500.

[0090] 7A, the water cooling accessory 600 is configured to be detachable from the rear surface of the camera body 500. The camera body 500 and the water cooling accessory 600 are fixed together by engagement between a locking portion 506 (FIG. 5B) of the camera body 500 and a locking claw 609 (FIG. 6C) of the water cooling accessory 600.

[0091] Note that because the water cooling accessory 600 is laid out on the back surface of the camera body 500, the back surface of the camera body 500 may become heavy depending on the volume of the refrigerant 606, and it is possible that the locking unit 506 and the locking claw 609 alone may not be able to maintain sufficient holding force. Therefore, instead of using the locking unit 506 and the locking claw 609, the camera body 500 and the water cooling accessory 600 may be fixed together by threading a tripod screw (not shown) provided on the water cooling accessory 600 into the tripod mount 125 ( FIG. 5C ) of the camera body 500. Alternatively, the engagement between the locking unit 506 and the locking claw 609 and the threading of the tripod mount 125 and the tripod screw may be used in combination.

[0092] When attaching the water-cooling accessory 600, the user opens the display unit 101 so that the heat dissipation member 503 is visible from the outside (FIG. 5B). With part of the heat dissipation member 503 exposed from the rear exterior member 501, the user attaches the water-cooling accessory 600 to the camera body 500 by engaging the locking portion 506 with the locking claw 609 (FIG. 7B).

[0093] When the water-cooled accessory 600 is attached to the camera body 500, the heat dissipation member 503 of the camera body 500 and the accessory heat receiving member 603 of the water-cooled accessory 600 come into contact with each other and are thermally connected to each other. This allows heat from the camera body 500 to be transferred to the water-cooled accessory 600.

[0094] The heat transfer method will be described in detail below. Heat from the image sensor 131 and electronic components 133 of the camera body 500 is transferred to the heat dissipation member 503 via a heat transfer member (not shown) and a first heat transfer member 502. When the water-cooled accessory 600 is attached to the camera body 500, the heat from the heat dissipation member 503 is transferred to the accessory heat receiving member 603 of the water-cooled accessory 600.

[0095] The heat transferred to the accessory heat-receiving member 603 is transferred to the heat sink 605, and then from the heat sink 605 to the refrigerant 606. The heat of the refrigerant 606 is transferred to the storage container 604, from the storage container 604 to the accessory exterior 601a, and is radiated into the atmosphere from the outer surface of the accessory exterior 601a. ​​Note that a heat insulating configuration may be adopted that does not transfer heat from the storage container 604 to the accessory exterior 601a.

[0096] According to this embodiment, when the water-cooled accessory 600 is attached to the camera body 500, the heat dissipation member 503 and the accessory heat receiving member 603 are thermally connected, and the heat of the electronic component 133 is transferred to the refrigerant 606. Therefore, with a simple configuration, it is possible to achieve the same effect as in the first embodiment in terms of cooling the camera body 500 while suppressing condensation on the camera body 500.

[0097] Furthermore, since the heat dissipation member 503 is arranged on the back surface of the camera body 500, the heat from the electronic components 133 of the second circuit board 132, which is the main heat source, can be transferred via the shortest path to the heat dissipation member 503 of the back exterior member 501, and further to the accessory heat receiving member 603.

[0098] Furthermore, the rear exterior member 501 is a member that can secure a relatively large area among the exterior members of the camera body 500. Therefore, the area of ​​the heat dissipation member 503 that comes into contact with the accessory heat receiving member 603 of the water-cooled accessory 600 can be increased, enabling more efficient heat dissipation to the water-cooled accessory 600.

[0099] (Third embodiment) The third embodiment of the present invention will now be described with reference to Figures 8 to 10. In each figure, the same components as those in the first embodiment are denoted by the same reference numerals.

[0100] In this embodiment, a camera body 800 is exemplified as an electronic device, and a water cooling accessory 900 (FIG. 9A, etc.) is exemplified as a cooling device. Hereinafter, the directions of each part will be designated based on the X, Y, and Z coordinate axes shown in FIG. 8A, etc. Note that the designations of directions related to the water cooling accessory 900 are based on the state in which the water cooling accessory 900 is attached to the camera body 800.

[0101] Fig. 8A is a rear view of camera body 800. Fig. 8B is a cross-sectional view taken along line CC in Fig. 8A.

[0102] An imaging element 131 such as a CMOS or CCD, which is a heat source, is mounted on the first circuit board 130. Electronic components 133 such as a CPU and DRAM, and a media slot 153, which are also heat sources, are mounted on the second circuit board 132.

[0103] Between the first circuit board 130 and the second circuit board 132 in the Z direction, a first heat transfer member 802 made of a highly heat conductive material such as an aluminum sheet metal, a copper sheet metal, or a heat pipe is disposed.

[0104] The imaging element 131 of the first circuit board 130 and the first heat transfer member 802 are thermally connected by a heat transfer member such as a heat dissipation rubber or a graphite sheet (not shown). Heat from the imaging element 131 of the first circuit board 130 is transferred to the first heat transfer member 802 via the heat transfer member (not shown).

[0105] Electronic components 133 of second circuit board 132 and first heat transfer member 802 are thermally connected by a heat transfer member such as heat dissipation rubber or a graphite sheet (not shown). Heat from electronic components 133 of second circuit board 132 is transferred to first heat transfer member 802 via the heat transfer member (not shown). Note that media slot 153 of second circuit board 132 and first heat transfer member 802 may also be thermally connected by a heat transfer member such as heat dissipation rubber or a graphite sheet (not shown).

[0106] The grip part 122 of the camera body 800 is provided with a battery chamber 801 for housing a battery that supplies power to the camera body 800. The material of the battery chamber 801 may be aluminum, magnesium, or a resin material. A part of a heat dissipation member 803 that is thermally connected to a first heat transfer member 802 is exposed inside the battery chamber 801. The heat dissipation member 803 is made of a highly thermally conductive material such as aluminum, magnesium, or copper.

[0107] In this embodiment, the battery chamber 801 and the heat dissipation member 803 are provided as separate bodies, but the entire battery chamber 801 may be made of a material such as aluminum or magnesium, and the entire battery chamber 801 may also serve as the heat dissipation member 803. The first heat transfer member 802 and the heat dissipation member 803 are thermally connected by screws (not shown) or the like, and heat from the image sensor 131 and the electronic component 133 is transferred to the heat dissipation member 803 via the first heat transfer member 802.

[0108] In this embodiment, a metal plate is used for first heat transfer member 802, but a heat transfer member such as a graphite sheet may also be used. Heat may also be transferred from first circuit board 130 and second circuit board 132 to heat dissipation member 803 using a heat dissipation member other than first heat transfer member 802.

[0109] The main body member 804 is a main component that constitutes the camera body 800. The heat dissipation member 803 and the main body member 804 are thermally connected by a second heat transfer member 805 such as heat dissipation rubber or a graphite sheet. Heat transferred from the image sensor 131 and the electronic components 133 to the heat dissipation member 803 is transferred to the main body member 804 via the second heat transfer member 805, and then transferred to the entire camera body 800 via the main body member 804.

[0110] This prevents heat from the image sensor 131 and electronic components 133 from being trapped in the heat dissipation member 803 when the water-cooled accessory 900 is not attached, thereby reducing an excessive rise in temperature of the image sensor 131 and electronic components 133. Note that the heat transferred to the heat dissipation member 503 is not limited to the main body member 804, and may be transferred to other members such as an exterior member or an internal metal plate.

[0111] Because the heat dissipation member 803 is exposed inside the battery chamber 801, the user cannot easily touch the heat dissipation member 803. Therefore, it is possible to prevent the user from accidentally touching the hot heat dissipation member 803 and feeling uncomfortable when the water-cooled accessory 900 is not attached.

[0112] Fig. 9A is a rear perspective view of the water cooling accessory 900. Fig. 9B is a view of the water cooling accessory 900 as seen from the +Y side. Fig. 9C is a cross-sectional view taken along line DD in Fig. 9B.

[0113] 9A, the water-cooled accessory 900 includes an accessory exterior 901, a tripod screw 902, and a tower section 909. The tower section 909 is provided to protrude from the accessory exterior 901 toward the +Y side. An accessory heat-receiving member 903 and a power terminal 910 are provided on the tower section 909.

[0114] The accessory heat receiving member 903 is exposed in a position on the tower section 909 where it can come into contact with the heat dissipation member 803. The accessory heat receiving member 903 is on the side surface of the tower section 909, but is not limited to this, and the accessory heat receiving member 903 may be provided anywhere on the tower section 909 as long as it is in a position where it can come into contact with the heat dissipation member 803.

[0115] The water-cooling accessory 900 can be attached to the camera body 800 by screwing the tripod screw 902 of the water-cooling accessory 900 into the tripod mount 125 (FIG. 1C) of the camera body 800. When the water-cooling accessory 900 is attached to the camera body 800, the tower part 909 is inserted into the battery chamber 801 of the camera body 800. This brings the heat dissipation member 803 of the camera body 800 and the accessory heat receiving member 903 of the water-cooling accessory 900 into contact with each other and thermally connects them.

[0116] For simplicity, the tripod screw 902 and the power terminal 910 are not shown in FIG. 9C. As shown in FIG. 9C, the water-cooled accessory 900 includes a power supply unit 911, a storage container 904 (storage unit) that stores a refrigerant 906, a heat sink 905 that transfers heat to the refrigerant 906 in the storage container 904, and a third heat transfer member 907. The third heat transfer member 907 is made of a highly thermally conductive member such as a heat pipe. The third heat transfer member 907, the refrigerant 906, and the storage container 904 are housed in an accessory exterior 901. The third heat transfer member 907 is arranged from the tower unit 909 to the storage container 904.

[0117] The accessory heat receiving member 903 and the heat sink 905 are thermally connected by a third heat transfer member 907. Heat from the accessory heat receiving member 903 is transferred to the heat sink 905. The third heat transfer member 907 is not limited to a heat pipe, and may be a graphite sheet or a metal member. The third heat transfer member 907 is attached in a manner that penetrates the containment vessel 904, and has a liquid seal 908 to prevent the refrigerant 906 inside the containment vessel 904 from leaking out to the outside.

[0118] The water cooling accessory 900 includes a power supply unit 911 configured with a battery or the like, and when attached to the camera body 800, power is supplied to the camera body 800 from a power terminal 910 of the tower unit 909. The power supply unit 911 may be a battery or an external power source such as a USB power supply. The power supply unit 911 may be provided inside the tower unit 909 or may be located next to the storage container 904. Alternatively, the camera body 800 may include a built-in power source without including the power terminal 910 and the power supply unit 911.

[0119] Fig. 10A is a front perspective view of camera system 3000. Fig. 10B is a cross-sectional view taken along line EE in Fig. 10A. Camera system 3000 is configured by attaching water cooling accessory 900 to camera body 800. Water cooling accessory 900 is configured to be detachable from the bottom surface of camera body 800.

[0120] A battery cover (not shown) is attached to the battery chamber 801 of the camera body 800. When attaching the water-cooled accessory 900, the user removes the battery cover and inserts the tower part 909 of the water-cooled accessory 900 into the battery chamber 801. Note that the water-cooled accessory 900 may be provided with a storage part (not shown), and the removed battery cover may be stored in the storage part.

[0121] When the water-cooled accessory 900 is attached to the camera body 800 and the tower part 909 is inserted into the battery chamber 801, the heat dissipation member 803 and the accessory heat receiving member 903 come into contact and are thermally connected to each other inside the battery chamber 801. This allows the heat of the camera body 800 to be transferred to the water-cooled accessory 900.

[0122] In this embodiment, the heat dissipation member 803 is fixed by an elastic member (not shown), and the position of the heat dissipation member 803 is finely adjusted left and right (X direction) depending on the insertion of the accessory heat receiving member 903, thereby allowing the two to come into appropriate contact. Note that a configuration may also be adopted in which the accessory heat receiving member 903 moves left and right (X direction) due to the spring properties of the third heat transfer member 907 to which the accessory heat receiving member 903 is fixed, thereby bringing the accessory heat receiving member 903 into contact with the heat dissipation member 803. Alternatively, the accessory heat receiving member 903 may be disposed on the top surface (the leading end in the insertion direction) of the tower section 909 and come into contact with the heat dissipation member 803.

[0123] The heat transfer will be described in detail below. Heat from the imaging element 131 and electronic components 133 of the camera body 800 is transferred to the heat dissipation member 803. When the water-cooled accessory 900 is attached to the camera body 800, the heat from the heat dissipation member 803 is transferred to the accessory heat receiving member 903 of the water-cooled accessory 900.

[0124] The heat transferred to the accessory heat-receiving member 903 is transferred to the heat sink 905 via the third heat transfer member 907, and then transferred from the heat sink 905 to the refrigerant 906. The heat of the refrigerant 906 is transferred to the containment vessel 904, from the containment vessel 904 to the accessory exterior 901, and is radiated into the atmosphere from the outer surface of the accessory exterior 901. Note that a heat insulating configuration may be adopted in which heat is not transferred from the containment vessel 904 to the accessory exterior 901.

[0125] According to this embodiment, when the water-cooled accessory 900 is attached to the camera body 800, the heat dissipation member 803 and the accessory heat receiving member 903 are thermally connected inside the battery chamber 801, and the heat of the electronic components 133 is transferred to the refrigerant 906. Therefore, with a simple configuration, it is possible to achieve the same effect as in the first embodiment in terms of cooling the camera body 800 while suppressing condensation on the camera body 800.

[0126] Furthermore, by providing the heat dissipation member 803 in the battery compartment 801, the heat dissipation member 803 is located in a position that is not normally touched, so that even when the water-cooled accessory 900 is not in use, the possibility that the user will accidentally touch the heat dissipation member 803 and feel uncomfortable is reduced.

[0127] Furthermore, the battery chamber 801 equipped with the heat dissipation member 803 is relatively close to the first circuit board 130 on which the image sensor 131, which is a heat source, is mounted, and the second circuit board 132 on which the electronic components 133 such as the CPU and the media slot 153 are mounted. Therefore, it is easy to efficiently transfer heat from the heat source to the heat dissipation member 803.

[0128] In each of the above embodiments, modifications shown in FIGS. 11 and 12 may be applied.

[0129] 11 is a schematic diagram showing a modified example of the storage container 204. In the first embodiment, a cooling mechanism 1101 (cooling means) may be separately provided inside the storage container 204 of the water-cooled accessory 200. The cooling mechanism 1101 is composed of, for example, a Peltier element, a fan, or a cooling rod that thermally connects the external air and the refrigerant 206. The cooling mechanism 1101 can lower the temperature of the refrigerant 206, thereby making it possible to further lower the temperature of the camera body 100.

[0130] Furthermore, a convection mechanism 1102 (convection means) may be separately provided within the storage container 204. The convection mechanism 1102 is composed of, for example, a fan or a pump. The convection mechanism 1102 generates forced convection in the coolant 206 within the storage container 204. When the camera body 100 and the water-cooled accessory 200 are not moving, circulation or forced convection does not occur, which may result in temperature unevenness in the coolant 206. However, by generating forced convection, the temperature unevenness in the coolant 206 is reduced, making it possible to efficiently lower the temperature of the camera body 100.

[0131] Although the modification shown in FIG. 11 is applied to the storage vessel 204 in the first embodiment, it can also be applied to the second and third embodiments (storage vessels 604, 904).

[0132] FIG. 12 is a perspective view of a modified heat sink 205. The heat sink 205 shown in FIG. 2B has a configuration in which multiple wall-shaped fins are arranged. However, this is not limited thereto, and as shown in FIG. 12, cylindrical fins may be arranged at regular intervals. In this configuration, the refrigerant 206 can move between the cylinders regardless of the orientation of the heat sink 205. Therefore, it is possible to reduce temperature unevenness of the refrigerant 206 regardless of the orientation (posture) of the camera body 100 to which the water-cooled accessory 200 is attached.

[0133] 12 can also be applied to the second and third embodiments (heat sinks 605 and 905). In each embodiment, at least one of the cooling mechanism 1101, the convection mechanism 1102, and the cylindrical fins may be employed.

[0134] The imaging device to which the present invention is applied may be an integrated lens type device. The present invention is not limited to imaging devices and can be applied to various electronic devices.

[0135] Although the present invention has been described in detail above based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the gist of the present invention are also included in the present invention. Parts of the above-described embodiments may be combined as appropriate.

[0136] The disclosure of this embodiment includes the following configuration. (Configuration 1) An electronic device to which a cooling device can be attached or detached, Electronic components that are heat sources; a heat dissipation member having thermal conductivity; a first heat transfer member that thermally connects the electronic component and the heat dissipation member, When the cooling device is attached, a heat receiving member of the cooling device and the heat dissipating member are thermally connected to each other. (Configuration 2) The cooling device is attached to the bottom surface of the electronic device, The electronic device described in configuration 1, characterized in that when the cooling device is attached to the bottom surface of the electronic device, a portion of the heat dissipation member can be exposed from an exterior member that forms part of the bottom surface. (Configuration 3) A detachable cover member is provided on the exterior member, The electronic device described in configuration 2, characterized in that by attaching the cover member to the exterior member, the heat dissipation member is not exposed from the exterior member, and by removing the cover member from the exterior member, a portion of the heat dissipation member is exposed from the exterior member. (Configuration 4) The cooling device is attached to the rear surface of the electronic device, The electronic device described in configuration 1, characterized in that when the cooling device is attached to the back surface of the electronic device, a portion of the heat dissipation member can be exposed from an exterior member that forms part of the back surface. (Configuration 5) A display unit that can be moved between a position overlapping the rear surface and a position not overlapping the rear surface, The electronic device described in configuration 4, characterized in that when the display unit is moved to a position overlapping the rear surface, the portion of the heat dissipation member is not exposed, and when the display unit is moved to a position not overlapping the rear surface, the portion of the heat dissipation member is exposed. (Configuration 6) A part of the heat dissipation member is exposed to the inside of a battery chamber that accommodates a battery, 2. The electronic device according to configuration 1, wherein when the cooling device is attached, the heat dissipation member and the heat receiving member are thermally connected within the battery chamber. (Configuration 7) The electronic device according to configuration 6, wherein when the cooling device is attached, a part of the cooling device including the heat-receiving member is inserted into the battery chamber. (Configuration 8) A main body member that constitutes a main body of the electronic device other than the heat dissipation member; 8. The electronic device according to any one of configurations 1 to 7, further comprising: a second heat transfer member that thermally connects the heat dissipation member and the main body member. (Configuration 9) Having a tripod mount, The electronic device according to configuration 1, wherein the cooling device is attached to the electronic device by threading a screw of the cooling device into the tripod mount. (Configuration 10) The electronic device according to any one of configurations 1 to 9, wherein the electronic component includes an image pickup element that converts an optical image into an image signal. (Configuration 11) The electronic device according to any one of configurations 1 to 10, wherein the electronic device is an imaging device. (Configuration 12) A cooling device detachable from an electronic device, a heat-receiving member that is partially exposed from an exterior member that configures the exterior of the cooling device; a storage unit for storing a thermal diffusion unit and a refrigerant, the heat-receiving member and the thermal diffusion unit are thermally connected, and the thermal diffusion unit and the refrigerant are thermally connected, When the cooling device is attached to the electronic device, a heat dissipation member of the electronic device and the heat receiving member are thermally connected. (Configuration 13) In the electronic device, a part of the heat dissipation member is exposed to a battery chamber that accommodates a battery, 13. The cooling device according to configuration 12, wherein when the cooling device is attached to the electronic device, the heat dissipation member and the heat receiving member are thermally connected within the battery chamber. (Configuration 14) The cooling device according to configuration 13, wherein when the cooling device is attached, a part of the cooling device including the heat-receiving member is inserted into the battery chamber. (Configuration 15) The cooling device according to configuration 12, wherein the thermal diffusion unit has a plurality of fins for transferring heat to the refrigerant. (Configuration 16) The cooling device according to any one of configurations 12 to 15, further comprising a cooling means for cooling the refrigerant. (Configuration 17) The cooling device according to any one of configurations 12 to 16, further comprising convection means for convecting the refrigerant within the storage section. (Configuration 18) An electronic device system having an electronic device and a cooling device detachable from the electronic device, The electronic device includes: Electronic components that are heat sources; a heat dissipation member having thermal conductivity; a first heat transfer member that thermally connects the electronic component and the heat dissipation member, The cooling device is a heat-receiving member that is partially exposed from an exterior member that configures the exterior of the cooling device; a storage unit for storing a thermal diffusion unit and a refrigerant, the heat-receiving member and the thermal diffusion unit are thermally connected, and the thermal diffusion unit and the refrigerant are thermally connected, When the cooling device is attached to the electronic device, the heat dissipation member of the electronic component and the heat receiving member of the cooling device are thermally connected to each other. [Explanation of symbols]

[0137] 100, 500, 800 camera body 132 Second Circuit Board 133 Electronic Components 134, 502, 802 First heat transfer member 135, 503, 803 Heat dissipation materials 200, 600, 900 Water Cooling Accessories 203, 603, 903 Accessory heat receiving member

Claims

1. An electronic device to which a cooling device can be attached or detached, Electronic components that are heat sources; a heat dissipation member having thermal conductivity; a first heat transfer member that thermally connects the electronic component and the heat dissipation member, When the cooling device is attached, a heat receiving member of the cooling device and the heat dissipating member are thermally connected to each other.

2. the cooling device is attached to a bottom surface of the electronic device; 2. The electronic device according to claim 1, wherein when the cooling device is attached to the bottom surface of the electronic device, a portion of the heat dissipation member can be exposed from an exterior member that forms part of the bottom surface.

3. a lid member that is detachable from the exterior member; 3. The electronic device according to claim 2, wherein when the cover member is attached to the exterior member, the heat dissipation member is not exposed from the exterior member, and when the cover member is removed from the exterior member, a portion of the heat dissipation member is exposed from the exterior member.

4. the cooling device is attached to a rear surface of the electronic device; 2. The electronic device according to claim 1, wherein when the cooling device is attached to the rear surface of the electronic device, a portion of the heat dissipation member can be exposed from an exterior member that forms part of the rear surface.

5. a display unit that is movable between a position overlapping the rear surface and a position not overlapping the rear surface, The electronic device according to claim 4, characterized in that when the display unit is moved to a position overlapping the rear surface, the portion of the heat dissipation member is not exposed, and when the display unit is moved to a position not overlapping the rear surface, the portion of the heat dissipation member is exposed.

6. a portion of the heat dissipation member is exposed to a battery chamber that accommodates a battery; 2. The electronic device according to claim 1, wherein when the cooling device is attached, the heat dissipation member and the heat receiving member are thermally connected within the battery chamber.

7. 7. The electronic device according to claim 6, wherein when the cooling device is attached, a part of the cooling device including the heat-receiving member is inserted into the battery chamber.

8. a main body member that constitutes a main body of the electronic device other than the heat dissipation member; 2. The electronic device according to claim 1, further comprising a second heat transfer member that thermally connects the heat dissipation member and the main body member.

9. It has a tripod mount, 2. The electronic device according to claim 1, wherein the cooling device is attached to the electronic device by threading a screw provided on the cooling device into the tripod mount.

10. 2. The electronic device according to claim 1, wherein the electronic component includes an image sensor for converting an optical image into an image signal.

11. 2. The electronic device according to claim 1, wherein the electronic device is an imaging device.

12. A cooling device detachable from an electronic device, a heat-receiving member that is partially exposed from an exterior member that configures the exterior of the cooling device; a storage unit for storing a thermal diffusion unit and a refrigerant, the heat-receiving member and the thermal diffusion unit are thermally connected, and the thermal diffusion unit and the refrigerant are thermally connected, When the cooling device is attached to the electronic device, a heat dissipation member of the electronic device and the heat receiving member are thermally connected.

13. In the electronic device, a portion of the heat dissipation member is exposed to a battery chamber that accommodates a battery, 13. The cooling device according to claim 12, wherein when the cooling device is attached to the electronic device, the heat dissipation member and the heat receiving member are thermally connected inside the battery chamber.

14. 14. The cooling device according to claim 13, wherein when the cooling device is attached, a part of the cooling device including the heat-receiving member is inserted into the battery chamber.

15. The cooling device according to claim 12 , wherein the thermal diffusion unit has a plurality of fins for transferring heat to the refrigerant.

16. 13. The cooling device according to claim 12, further comprising a cooling means for cooling the refrigerant.

17. 13. The cooling device according to claim 12, further comprising convection means for convecting the refrigerant within the storage section.

18. An electronic device system having an electronic device and a cooling device detachable from the electronic device, The electronic device includes: Electronic components that are heat sources; a heat dissipation member having thermal conductivity; a first heat transfer member that thermally connects the electronic component and the heat dissipation member, The cooling device is a heat-receiving member that is partially exposed from an exterior member that configures the exterior of the cooling device; a storage unit for storing a thermal diffusion unit and a refrigerant, the heat-receiving member and the thermal diffusion unit are thermally connected, and the thermal diffusion unit and the refrigerant are thermally connected, When the cooling device is attached to the electronic device, the heat dissipation member of the electronic component and the heat receiving member of the cooling device are thermally connected to each other.

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