Electronic device

Abstract

To suppress heat transfer from a heat dissipation member to an outer casing member, thereby avoiding excessive temperature rise in the outer casing member.SOLUTION: An electronic device 100 has electronic components 143a, 143b therein, and has a heat dissipation member 127 to which heat generated by the electronic components is transmitted, an outer casing member 125 covering the heat dissipation member, and positioning structures 129, 128 that position the heat dissipation member relative to the outer casing member without make the heat dissipation member contact the outer casing member.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an electronic device such as an imaging device. [Background technology]

[0002] Electronic devices are provided with a heat dissipation structure that suppresses temperature rise due to heat generated by internal electronic components. Patent Document 1 discloses a heat dissipation structure that transfers heat generated from electronic components inside an electronic device (imaging device) to an exterior member through three heat dissipation paths. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Patent No. 10,133,158 Summary of the Invention [Problem to be solved by the invention]

[0004] In the heat dissipation structure disclosed in Patent Document 1, the heat dissipation member, which is thermally connected to the electronic component, is directly mechanically coupled to the exterior member, which may result in heat being transferred directly from the heat dissipation member to the exterior member, causing an excessive rise in temperature of the exterior member.

[0005] The present invention provides an electronic device that can prevent an excessive temperature rise in an exterior member by suppressing heat transfer from a heat dissipation member to the exterior member. [Means for solving the problem]

[0006] An electronic device according to one aspect of the present invention is characterized by having an electronic component therein, a heat dissipation member through which heat generated by the electronic component is transferred, an exterior member that covers the heat dissipation member, and a positioning structure that positions the heat dissipation member relative to the exterior member without the heat dissipation member coming into contact with the exterior member. [Effects of the Invention]

[0007] According to the present invention, by suppressing the heat conduction from the heat dissipation metal plate to the exterior member, an excessive temperature rise in the exterior member can be avoided. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing the appearance of a camera body according to an embodiment. [Figure 2] FIG. 2 is a block diagram showing the electrical configuration of the camera body of the embodiment. [Figure 3] 1A and 1B are an exploded view and a perspective view showing the internal configuration of a camera body according to an embodiment. [Figure 4] 1A and 1B are a cross-sectional view and a partially enlarged view of a camera body according to an embodiment of the present invention. [Figure 5] 3A and 3B are another cross-sectional view and another enlarged partial view of the camera body of the embodiment. [Figure 6] FIG. 10 is a further enlarged partial view of the camera body according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0010] 1(a) and 1(b) show the appearance of a camera body (imaging device) 100 as an electronic device according to an embodiment. Fig. 1(a) shows the camera body 100 as seen from the diagonally front side (subject side), and Fig. 1(b) shows the camera body 100 as seen from the diagonally rear side. As shown in the figures, the width direction (left-right direction) of the camera body 100 is the X direction, the height direction is the Y direction, and the optical axis direction (front-back direction) that is perpendicular to the imaging surface is the Z direction.

[0011] A rear display unit 101 is attached to the rear surface of the camera body 100 so as to be openable, closable, and rotatable relative to the camera body 100. The rear display unit 101 displays images (for example, live view images) generated by capturing images and various information related to capturing images. The rear display unit 101 is equipped with a touch panel and can detect touch operations by the user on its display surface (operation surface).

[0012] The top surface of the camera body 100 is provided with a top display unit 102, a shutter button 103, a mode selector switch 104, a main electronic dial 106, a sub electronic dial 108, and a video button 112. The top display unit 102 can display various image capture-related setting values ​​such as shutter speed and aperture value. The shutter button 103 is an operating member that the user operates to instruct image capture for recording. The mode selector switch 104 is an operating member that the user operates to switch between various image capture modes.

[0013] The main electronic dial 106 is an operating member that the user rotates to change settings related to image capture. 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 selection frames such as the AF frame and the ranging frame, or to advance through images. The video button 112 is an operating member that the user operates to start and stop video recording.

[0014] The rear surface of the camera body 100 is provided with a multi-controller 109, a rear electronic dial 110, a SET button 111, a button group A 113, a button group B 114, a button group C 115, and a button group D 116. The multi-controller 109 is configured to allow input by pressing the key top and tilting it up, down, left, right, and diagonally. The user can operate the multi-controller 109 to move the selection frame and select items in various menus. The rear electronic dial 110 is also an operating member that the user operates to move the selection frame and switch images. The rear electronic dial 110 is positioned so that the user can intuitively operate it while displaying an image on the rear display unit 101, and is also positioned so that it can be easily operated even when the user holds the camera body 100 in a vertical position.

[0015] A SET button 111 is provided in the center of the rear electronic dial 110. The SET button 111 is an operating member that functions as a push button that the user operates when deciding on a selection item, etc. Button group A113 is an operating member related to focus and exposure, and includes an AF start button, an AE lock button, and an AF frame selection button. When the user is in imaging standby mode, they can start AF, change the AF frame, or fix the exposure by pressing these buttons A113.

[0016] The button group B114 includes a zoom in / out button, an information display button, and a quick setting button. When a live view image is displayed (in imaging mode), the user can switch ON / OFF the zoom in of the live view image by operating the zoom in / out button. When a playback image is displayed (in 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. Furthermore, when the user operates the information display button, the display method of the information displayed on the rear display unit 101 can be switched. When the user operates the quick setting button, the display on the rear display unit 101 can be transitioned to a screen for changing setting values ​​related to imaging.

[0017] 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 image of the captured images recorded on a recording medium (not shown) can be displayed on the rear 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.

[0018] 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 rear display unit 101. The user can intuitively select and set items by touching the menu screen displayed on the rear display unit 101 or by operating the multi-controller 109, rear electronic dial 110, and SET button 111. In playback mode, the user can rate a playback image by operating the rating button.

[0019] An interchangeable lens unit (not shown) is removably attached to a mount section 117 provided on the front of the camera body 100. A communication terminal 118 provided inside the mount section 117 is used for communication between the camera body 100 and the interchangeable lens unit.

[0020] Finder 119, located at the top of the back of camera body 100, is an electronic viewfinder that allows the user to view a live view image, etc. Eyepiece cover 120 is a rubber member that comes into contact with the face around the eyes of the user looking through finder 119.

[0021] The grip section 121 is a gripping section shaped to be easily gripped by the right hand of a user holding the camera body 100. The card cover 122 is a cover that covers a media slot that stores recording media (not shown). The card cover 122 is provided on the grip section 121 where the palm of the user's hand rests. The terminal cover 105 is a cover that protects a connector to which a connection cable extending from an external device can be connected. The tripod mount 123 is an attachment member used when attaching external accessories to the bottom surface of the camera body 100. The battery cover 124 is a cover for opening and closing a battery chamber that stores a battery (not shown).

[0022] The rear exterior member 125 is an exterior member that covers the rear and bottom surfaces of the camera body 100, and is made of metal, polycarbonate, etc. The rear exterior member 125 has a main body air intake 125a on the bottom surface thereof, and also has a storage section 125ba on the rear surface that stores the rear display section 101.

[0023] The side exterior member 126 is an exterior member that forms the left side surface when the camera body 100 is viewed from the rear side, and is made of metal, polycarbonate, etc. The side exterior member 126 has a body exhaust port 126a.

[0024] 2 shows the electrical configuration of camera body 100. CPU (Central Processing Unit) 143 is a computer that controls the overall operation of camera body 100. Various electronic components, including CPU 143, which is one of the heat-generating components, are mounted on main circuit board 142. Main circuit board 142 is a printed wiring board (PWB). CPU 143 controls the operation of camera body 100 and performs the necessary calculations in accordance with a computer program loaded from memory 152. Power supply 150 supplies power to each component within camera body 100.

[0025] The imaging element 141 is a photoelectric conversion element such as a CCD sensor or CMOS sensor, and converts a subject image formed by the imaging optical system in the interchangeable lens unit into an imaging signal, which is an electrical signal. The imaging signal obtained by the imaging element 141 is converted into image data by the image processing unit 151. A shutter 156 is arranged in front of the imaging element 141. The shutter 156 controls the exposure time of the imaging element 141. The shutter control unit 154 controls the driving of the shutter 156 in response to commands from the CPU 143.

[0026] The operation detection unit 157 detects that the mode selector switch 104, also shown in Fig. 1(a), has been operated, and outputs an operation signal to the CPU 143. This causes the CPU 143 to change the settings such as the shutter speed and aperture value. Note that the user can select a desired mode from a plurality of video imaging modes by operating the mode selector switch 104.

[0027] Video capture modes include a high-quality mode and a low-quality mode. When capturing a video in high-quality mode, the image sensor 141 and the CPU 143 place a heavy processing load on the image sensor 141 and the CPU 143, resulting in increased heat generation from these electronic components and the recording media attached to the media slot 153. If the increased heat generation causes the temperature of the camera body 100 to exceed a permissible value, thermal runaway of the electronic components and a shortened service life of the camera body 100 may occur. Therefore, it is necessary to shorten the continuous video capture time. The CPU 143 detects the temperature of the rear exterior member 125 and other exterior members using a temperature sensor. When the detected temperature exceeds a predetermined temperature, the CPU 143 controls the continuous video capture time to be shorter than when the temperature is below the predetermined temperature. On the other hand, when capturing a video in low-quality mode, the electronic components generate less heat than in high-quality mode, allowing the continuous video capture time to be longer. Furthermore, when capturing continuous still images, the CPU 143 controls the continuous still image capture speed to be slower (reduced) when the temperature of the rear exterior member 125 and other exterior members exceeds a predetermined temperature, compared to when the temperature is below the predetermined temperature. In this way, the camera body 100 has the function of restricting the operation of the camera body 100 in accordance with the temperature of the exterior member.

[0028] Figures 3(a) and (b) and Figures 4(a) and (b) show the internal configuration of the camera body 100. Figure 3(a) shows an exploded view of the interior of the camera body 100 from the front in the Z direction. Figure 3(b) shows the assembled state of the internal configuration shown in Figure 3(a) from the front. Figure 4(a) shows a cross section of the internal configuration shown in Figure 3(b) taken along line AA. Figure 4(b) shows an enlarged view of area C in Figure 4(a).

[0029] 1(b), and a wall portion 125c that extends along the outer periphery of the storage portion inner surface 125bb and protrudes forward. A first sheet metal member 127 and a second sheet metal member 134, which are heat dissipation members, are fixed to the rear exterior member 125 (wall portion 125c) by a method described below so that they are covered by the rear exterior member 125.

[0030] First sheet metal member 127 is made of a metal such as aluminum that has high thermal conductivity and is formed into a shape having an outer shape that fits along wall portion 125c, and has holes 127a and 127b. Holes 127a and 127b each have an inner diameter that allows protrusion 132a of hinge fixing member 132, which will be described later, and protrusion 136c of base member 136, which will be described later, to fit therewith.

[0031] A cushion member 128, which is an elastic member such as sponge or felt and has a lower thermal conductivity than the first sheet metal member 127, is disposed between the wall portion 125c of the rear exterior member 125 and the first sheet metal member 127. The first sheet metal member 127 is positioned and fixed to the rear exterior member 125 by a method (positioning configuration) described below using a plurality of (five in this embodiment) first fastening members 129. The first fastening members 129 are stepped screws and are made of steel or the like having a lower thermal conductivity than the first sheet metal member 127.

[0032] The CPU 143 shown in Fig. 2 is composed of a first CPU 143a and a second CPU 143b. The first CPU 143a and the second CPU 143b are electronic components that generate different amounts of heat. As shown in Fig. 4(a), the first CPU 143a and the second CPU 143b are mounted on the surface of the main circuit board 142, which is not shown in Figs. 3(a) and 3(b), that faces the first sheet metal member.

[0033] A first heat transfer member 144a and a second heat transfer member 144b are disposed between the first sheet metal member 127 and the first CPU 143a, and between the first sheet metal member 127 and the second CPU 143b, respectively. The first heat transfer member 144a and the second heat transfer member 144b are members for transferring heat generated from the first CPU 143a and the second CPU 143b to the first sheet metal member 127. In this embodiment, the first heat transfer member 144a is formed from heat-conductive rubber, and the second heat transfer member 144b is formed from a graphite sheet. However, the first and second heat transfer members may be formed from materials other than heat-conductive rubber and graphite sheet.

[0034] A hinge fixing member 132 is fixed to the rear exterior member 125 by a plurality of (three in this embodiment) second fastening members 133. The hinge fixing member 132 has a hinge portion (not shown) that supports the opening / closing and rotation of the rear display unit 101, and has a shape that supports a button group D116 that is operated by pressing. The hinge fixing member 132 is provided with a protrusion 132a that protrudes forward and fits into the hole 127a of the first sheet metal member 127 as described above. The hinge fixing member 132 is a resin member made of resin, and has a lower thermal conductivity than the first sheet metal member 127.

[0035] A second sheet metal member 134, which serves as a heat dissipation member, is fixed to the rear exterior member 125 by a plurality of (eight in this embodiment) third fastening members 135 using a method (fixing configuration) described below. Like the first sheet metal member 127, the second sheet metal member 134 is also formed of a metal such as aluminum, which has high thermal conductivity. The second sheet metal member 134 is also used as a member to support the multi-controller 109, rear electronic dial 110, SET button 111, and button groups (A to C) 113, 114, and 115 (hereinafter collectively referred to as the grip-side rear operation unit), which are operated by the user by pressing or rotating them. The second sheet metal member 134 has holes 134a and 134b. The holes 134a and 134b have inner diameters that allow protrusions 136a and 136b of a base member 136, which will be described later, to fit into the holes.

[0036] Between the second sheet metal member 134 and the rear exterior member 125, arranged in this order from the rear side are the aforementioned base member 136, which is fixed to the rear exterior member 125 and supports the rear electronic dial 110, a flexible substrate 137 on which the grip-side rear operation unit is mounted, and a sheet member 138. In this embodiment, the base member 136 is a resin member, and the sheet member 138 is a resin sheet such as a polyester film, both of which have lower thermal conductivity than the second sheet metal member 134. However, the sheet member 138 may be made of a resin material other than polyester.

[0037] The base member 136 has protrusions 136a, 136b, and 136c that protrude forward. As described above, the protrusions 136a and 136b fit into the holes 134a and 134b of the second sheet metal member 134, respectively, and the protrusion 136c fits into the hole 127b of the first sheet metal member 127.

[0038] Like the first and second CPUs 143a and 143b, the media slot 153 is mounted on the second sheet metal member side of the main circuit board 142. A third heat transfer member 147 is disposed between the second sheet metal member 134 and the media slot 153. The third heat transfer member 147 is a member that transfers heat generated by a recording medium (not shown) attached to the media slot 153 to the second sheet metal member 134 via the media slot 153. In this embodiment, the third heat transfer member 147 is formed from a graphite sheet. However, the third heat transfer member 147 may also be formed from a material other than a graphite sheet.

[0039] Next, a method for assembling the internal structure including the first sheet metal member 127 and the second sheet metal member 134 will be described.

[0040] First, a method for assembling the internal configuration portion including the second sheet metal member 134 will be described. The Z direction is the assembly direction (first direction) of the first sheet metal member 127 and the second sheet metal member 134 to the rear exterior member 125, and the X and Y directions are directions (second directions) perpendicular to the assembly direction. In this embodiment, the hinge fixing member 132 and the base member 136 are used to position the first sheet metal member 127 and the second sheet metal member 134 in the X and Y directions.

[0041] First, the base member 136 is positioned relative to the rear exterior member 125 in the X and Y directions.

[0042] Next, flexible substrate 137 and sheet member 138 are attached to the back surface of second sheet metal member 134. Then, protrusions 136a and 136b of base member 136 are fitted into holes 134a and 134b of second sheet metal member 134, respectively. As a result, second sheet metal member 134 is positioned in the X and Y directions relative to back surface exterior member 125 via base member 136.

[0043] Furthermore, second sheet metal member 134 is positioned and fixed in the Z direction relative to rear exterior member 125 by third fastening members 135. At this time, base member 136 is also fixed to rear exterior member 125 by third fastening members 135.

[0044] Next, we will explain how to assemble the internal configuration of the portion including the first sheet metal member 127. First, the hinge fixing member 132 is positioned in the X and Y directions relative to the rear exterior member 125. Then, the hinge fixing member 132 is fixed to the rear exterior member 125 with the second fastening member 133.

[0045] Next, cushion member 128 is attached to the front end surface of wall portion 125c of rear exterior member 125. Furthermore, protrusion 132a of hinge fixing member 132 and protrusion 136c of base member 136 are fitted into holes 127a and 127b of first sheet metal member 127, respectively. This positions first sheet metal member 127 in the X and Y directions relative to rear exterior member 125 via hinge fixing member 132 and base member 136. Then, first sheet metal member 127 is positioned and fixed to rear exterior member 125 in the Z direction using first fastening members 135.

[0046] As described above, in this embodiment, the first sheet metal member 127 is positioned in the X and Y directions relative to the rear exterior member 125 via the hinge fixing member 132 and the base member 136, and the second sheet metal member 134 is positioned in the X and Y directions relative to the rear exterior member 125 via the base member 136. That is, in the positioning configuration in the X and Y directions, neither the first sheet metal member 127 nor the second sheet metal member 134 directly contacts the rear exterior member 125. Therefore, heat transfer from the first and second sheet metal members 127 and 134 to the rear exterior member 125 can be suppressed compared to when the first and second sheet metal members 127 and 134 are positioned in the X and Y directions by directly contacting the rear exterior member 125. This prevents the temperature of the rear exterior member 125 from excessively increasing due to heat generated by the first and second CPUs 143a and 143b or the recording media being transferred from the first and second sheet metal members 127 and 134 to the rear exterior member 125.

[0047] 4(a) and 4(b), a positioning configuration of the first sheet metal member 127 relative to the rear exterior member 125 in the Z direction will be described in more detail. A first fastening member 129 and a cushion member 128 are members used in the positioning configuration of the first sheet metal member 127 in the Z direction. The first fastening member 129, which is a stepped screw, is fixed to the rear exterior member 125 by having its male thread portion pass through a hole formed in the first sheet metal member 127 and screwed into a screw hole (female thread) in the rear exterior member 125. In this state, a bearing surface portion (rear surface of the head) 129a serving as a receiving portion of the first fastening member 129 contacts the first sheet metal member 127 in the Z direction, and a stepped surface 129b contacts the rear exterior member 125 in the Z direction. As a result, the first fastening member 129 is positioned relative to the rear exterior member 125 in the Z direction.

[0048] At this time, the back surface of the first sheet metal member 127 presses in the Z direction against the cushion member 128 attached to the wall portion 125c of the rear exterior member 125. The thickness in the Z direction of the cushion member 128 before being pressed by the first sheet metal member 127 is greater than the thickness in the Z direction of the first sheet metal member 127 and is also greater than the clearance in the Z direction between the front end surface of the wall portion 125c and the rear surface of the first sheet metal member 127. Therefore, when the first sheet metal member 127 presses the cushion member 128, the cushion member 128 is compressed (elastically deformed). The first sheet metal member 127 is urged forward in the Z direction by the repulsive force (elastic force) of the compressed cushion member 128 and comes into contact with the seat portion 129a of the first fastening member 129. In this way, the first sheet metal member 127 is positioned and fixed in the Z direction relative to the rear exterior member 125.

[0049] Note that, here, we have explained the positioning configuration of one of the positioning configurations of the first sheet metal member 127 relative to the rear exterior member 125 using the first fastening members 129 at multiple locations, but the first sheet metal member 127 is positioned and fixed at other locations using a similar positioning configuration.

[0050] In this way, the first sheet metal member 127 is positioned and fixed in the Z direction relative to the rear exterior member 125 by the first fastening member 129 and the cushion member 128, without coming into direct contact with the rear exterior member 125. Therefore, compared to when the first sheet metal member 127 is fixed in the Z direction by coming into direct contact with the rear exterior member 125, it is possible to suppress the transfer of heat from the first sheet metal member 127 to the rear exterior member 125. This makes it possible to prevent the temperature of the rear exterior member 125 from excessively rising due to the heat generated in the first and second CPUs 143a, 143b being transferred from the first sheet metal member 127 to the rear exterior member 125.

[0051] Next, the fixing configuration of the second sheet metal member 134 to the rear exterior member 125 in the Z direction will be described in detail using Figures 5(a), (b), and 6. Figure 5(a) shows a cross section of the internal configuration shown in Figure 3(b) taken along line BB. Figure 5(b) shows an enlarged view of area D in Figure 5(a). Figure 6 shows an enlarged view of area E in Figure 5(a). The sheet member 138 and flexible substrate 137 correspond to intermediate members.

[0052] The third fastening member 135 shown in Fig. 5(b) is fixed to the rear exterior member 125 by having its male screw portion pass through holes formed in the second sheet metal member 134 and the sheet member 138 and screwed into a screw hole in the rear exterior member 125 so that the sheet member 138 comes into contact with the rear exterior member 125 in the Z direction. The third fastening member 135 shown in Fig. 6 is fixed to the rear exterior member 125 by having its male screw portion pass through holes formed in the second sheet metal member 134 and the flexible board 137 and screwed into a screw hole in the rear exterior member 125 so that the flexible board 137 comes into contact with the rear exterior member 125 in the Z direction. The second sheet metal member 134 to which the sheet member 138 and the flexible board 137 are attached in this way is positioned and fixed in the Z direction relative to the rear exterior member 125 by the third fastening member 135.

[0053] Here, we have described the fixing configuration of two of the fixing configurations of the second sheet metal member 134 to the rear exterior member 125 using the second fastening members 135 at multiple locations, but the fixing configurations at other locations also fix the second sheet metal member 134 using similar fixing configurations.

[0054] In this way, the second sheet metal member 134 is fixed to the rear exterior member 125 in the Z direction via the third fastening member 135, the sheet member 138, and the flexible substrate 137, without directly contacting the rear exterior member 125. This makes it possible to suppress the transfer of heat from the second sheet metal member 134 to the rear exterior member 125, compared to when the second sheet metal member 134 is fixed in the Z direction by directly contacting the rear exterior member 125. This makes it possible to prevent the temperature of the rear exterior member 125 from excessively rising due to the heat generated by the recording media in the media slot 153 being transferred from the second sheet metal member 134 to the rear exterior member 125.

[0055] Furthermore, in this embodiment, as shown in FIG. 4(b), a first space 131 is formed between the first sheet metal member 127 and the inner surface 125bb of the storage section of the rear exterior member 125. Also, as shown in FIGS. 5(b) and 6, a second space 139 is formed between the second sheet metal member 134 and the rear exterior member 125. A portion of the heat transferred from the first and second CPUs 143a and 143b to the first sheet metal member 127 is transferred to the air in the first space 131, and a portion of the heat transferred from the recording medium to the second sheet metal member 134 is transferred to the air in the second space 139. The air heated in the first and second spaces 131 and 139 is then discharged to the outside of the camera body 100 by natural convection. A flow path may be formed connecting the body air intake 125a to the body exhaust 126a via the first and second spaces 131 and the layer 139. Alternatively, forced convection by an airflow generating unit such as a fan attached to camera body 100 may be used to exhaust the air heated in first and second spaces 131, 139 to the outside of camera body 100 through the above-mentioned flow path.

[0056] According to the embodiment described above, it is possible to prevent an excessive temperature rise in the exterior member by suppressing heat transfer from the heat dissipation members (127, 134) to the exterior member (125). This makes it possible to prevent discomfort to a user touching the camera body, and to prevent a reduction in the continuous video shooting time or the continuous still image shooting speed due to a temperature rise.

[0057] In the above embodiment, the first and second sheet metal members 127, 134 are positioned and fixed to the rear exterior member 125 so that the Z direction is their normal direction. However, the sheet metal members do not have to have the Z direction as their normal direction. In other words, a configuration may be adopted in which the sheet metal members are positioned so that the X direction or the Y direction is their normal direction, and these are positioned and fixed to the exterior members disposed on the side or top of the camera body via the intermediate member.

[0058] The above embodiment includes the following configurations.

[0059] (Configuration 1) An electronic device having an electronic component therein, a heat dissipation member to which heat generated in the electronic component is transferred; an exterior member that covers the heat dissipation member; a positioning structure for positioning the heat dissipation member relative to the exterior member without the heat dissipation member coming into contact with the exterior member. (Configuration 2) 2. The electronic device according to configuration 1, wherein the positioning structure is made of a material having a lower thermal conductivity than the heat dissipation member. (Configuration 3) the positioning structure includes a fastening member fixed to the heat dissipation member and an elastic member elastically deformed between the heat dissipation member and the exterior member, 3. The electronic device according to configuration 1 or 2, characterized in that, in the assembly direction of the heat dissipation member and the exterior member, the heat dissipation member is positioned at a position away from the exterior member by receiving the elastic force of the elastic member and coming into contact with a receiving portion provided on the fastening member. (Configuration 4) The electronic device described in configuration 1 or 2, characterized in that the positioning structure includes a resin member fixed to the exterior member and positioning the heat dissipation member relative to the exterior member in a direction perpendicular to the assembly direction of the heat dissipation member and the exterior member. (Configuration 5) 5. The electronic device according to configuration 4, wherein the resin member is a member that supports an operation unit that is operated by a user. (Configuration 6) 6. The electronic device according to any one of configurations 1 to 5, further comprising an intermediate member disposed between the heat dissipation member and the exterior member so as not to cause the heat dissipation member to come into contact with the exterior member. (Configuration 7) 7. The electronic device according to configuration 6, wherein the intermediate member has a thermal conductivity lower than that of the heat dissipation member. (Configuration 8) 8. The electronic device according to configuration 6 or 7, wherein the intermediate member is a resin sheet or a flexible substrate. (Configuration 9) a space is formed between the heat dissipation member and the exterior member, 9. The electronic device according to any one of configurations 1 to 8, further comprising a configuration in which heat is dissipated from the heat dissipation member to the air in the space, and the air is discharged to the outside of the electronic device. (Configuration 10) 10. The electronic device according to any one of configurations 1 to 9, wherein the operation of the electronic device is limited depending on the temperature of the exterior member. (Configuration 11) an imaging device that captures an image of a subject and generates an image, 11. The electronic device according to configuration 10, wherein the continuous moving image capturing time or the continuous still image capturing speed is reduced depending on the temperature.

[0060] The embodiments described above are merely representative examples, and various modifications and alterations are possible to each embodiment when implementing the present invention. [Explanation of symbols]

[0061] 100 camera body 125 Rear exterior material 127 First sheet metal member 128 Cushion member 129 First fastening member 132 Hinge fixing member 134 Second sheet metal member 135 Third fastening member 136 Base member 137 Flexible PCB 138 Sheet material 143a 1st CPU 143b 2nd CPU 153 Media Slots

Claims

1. An electronic device having an electronic component therein, a heat dissipation member to which heat generated in the electronic component is transferred; an exterior member that covers the heat dissipation member; a positioning structure for positioning the heat dissipation member relative to the exterior member without the heat dissipation member coming into contact with the exterior member.

2. 2. The electronic device according to claim 1, wherein the positioning structure is made of a material having a lower thermal conductivity than the heat dissipation member.

3. the positioning structure includes a fastening member fixed to the heat dissipation member and an elastic member elastically deformed between the heat dissipation member and the exterior member, 2. The electronic device according to claim 1, wherein, in the assembly direction of the heat dissipation member and the exterior member, the heat dissipation member is positioned at the position by receiving the elastic force of the elastic member and contacting a receiving portion provided on the fastening member at a position away from the exterior member.

4. 2. The electronic device according to claim 1, wherein the positioning structure includes a resin member fixed to the exterior member and positioning the heat dissipation member relative to the exterior member in a direction perpendicular to an assembly direction of the heat dissipation member and the exterior member.

5. 5. The electronic device according to claim 4, wherein the resin member is a member that supports an operation unit that is operated by a user.

6. 2. The electronic device according to claim 1, further comprising an intermediate member disposed between the heat dissipation member and the exterior member so as not to bring the heat dissipation member into contact with the exterior member.

7. 7. The electronic device according to claim 6, wherein the intermediate member has a thermal conductivity lower than that of the heat dissipation member.

8. 7. The electronic device according to claim 6, wherein the intermediate member is a resin sheet or a flexible substrate.

9. a space is formed between the heat dissipation member and the exterior member, 2. The electronic device according to claim 1, further comprising a configuration in which heat is dissipated from the heat dissipation member to the air in the space, and the air is discharged to the outside of the electronic device.

10. The electronic device according to claim 1 , wherein the operation of the electronic device is limited depending on the temperature of the exterior member.

11. an imaging device that captures an image of a subject and generates an image, 11. The electronic device according to claim 10, wherein the continuous moving image capturing time or the continuous still image capturing speed is reduced depending on the temperature.

Images