Cooling device and electronic apparatus

Abstract

To provide a cooling device which can be easily mounted into a recess where a heat dissipation surface is included in an electronic apparatus.SOLUTION: A cooling device 300 which can be mounted in a recess 203 of a digital camera 1 comprises: a fan 302 for cooling a heat dissipation surface 203b located in the recess 203 of the digital camera 1; a fan storage section 301 in which the fan 302 is stored; mounting sections 303 and 304 separated from the fan storage section 301; a connection section 305 which connects the fan storage section 301 with the mounting sections 303 and 304 and is freely extensible / contractable; and a lock section 307 provided in the mounting sections 303 and 304. In a case where the cooling device 300 is mounted in the recess 203 of the digital camera 1, the mounting sections 303 and 304 are pressed to a sidewall 204 of the recess 203 of the digital camera 1 by the connection section 305, and the lock section 307 is engaged with a locked section 206 provided on the sidewall 204 of the recess 203 of the digital camera 1.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] An example of a cooling device that is externally attached to an electronic device such as an imaging device is the cooling unit disclosed in Patent Document 1. According to Patent Document 1, the cooling unit has a heat absorbing surface and a heat generating surface, and is configured to supply air from the heat absorbing surface to the air intake of the imaging device and not to supply air from the heat generating surface to the air intake of the imaging device, thereby realizing miniaturization, weight reduction, and ease of handling. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-145327 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the cooling unit disclosed in the above-mentioned Patent Document 1 is externally attached from the bottom surface of the imaging device to the left side surface where the air intake is located. In this regard, when the recess provided in the imaging device has a heat dissipation surface, a cooling device that can be attached to the recess of the imaging device is desired, but the cooling unit disclosed in the above-mentioned Patent Document 1 is difficult to attach to the recess of the imaging device.

[0005] The present invention has been made in view of the above problems, and an object of the present invention is to provide a cooling device that can be easily attached to a recess having a heat dissipation surface in an electronic device. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the cooling device of the present invention is a cooling device that can be attached to a recess of an electronic device, and comprises a fan for cooling a heat dissipation surface in the recess of the electronic device, a fan storage section that stores the fan, a mounting section spaced from the fan storage section, a connecting section that connects the fan storage section and the mounting section and is flexible and a locking section provided on the mounting section, and is characterized in that when the cooling device is attached to the recess of the electronic device, the mounting section is pressed against a side wall portion of the recess of the electronic device by the connecting section, and the locking section engages with a locked section provided on the side wall portion of the recess of the electronic device. Effect of the Invention

[0007] According to the present invention, the device can be easily mounted in a recess having a heat dissipation surface in an electronic device. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view showing the front appearance of a digital camera according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a perspective view showing the rear appearance of the digital camera. [Diagram 3] 1 is a perspective view showing an appearance of a cooling device according to an embodiment of the present invention; [Figure 4] FIG. [Diagram 5] FIG. 2 is a perspective view showing a state in which the cooling device is attached to a recess of the digital camera. [Figure 6] FIG. 1 is a block diagram showing a system including a digital camera and a cooling device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. However, the configuration described in the following embodiment is merely an example, and the scope of the present invention is not limited by the configuration described in the embodiment. For example, each part constituting the present invention can be replaced with any configuration that can perform the same function. In addition, any configuration may be added. In addition, any two or more configurations (features) of the present embodiment can be combined. In addition, in this embodiment, a digital camera, which is one of the imaging devices, will be taken up and described as an example of the electronic device of the present invention. Therefore, the scope of the present invention is not limited to imaging devices such as cameras, and may be any electronic device including an imaging device. For example, examples of electronic devices to which the present invention can be applied include smartphones, personal computers, tablet terminals, and the like.

[0010] The present embodiment will be described in detail below with reference to the accompanying drawings. The accompanying drawings are partially simplified to facilitate the description. FIG. 1 is a perspective view showing the front appearance of a digital camera 1 (electronic device) according to the present embodiment. FIG. 1 shows the digital camera 1 with an interchangeable lens (not shown) removed. As shown in FIG. 1, the digital camera 1 is provided with a release button 101, a horizontal position grip 102, and a vertical position grip 103 on its front side. The release button 101 is a button for taking a photograph. The horizontal position grip 102 is a grip for holding the digital camera 1 in a horizontal position when a user takes a horizontal photograph with the digital camera 1. The vertical position grip 103 is a grip for holding the digital camera 1 in a vertical position when a user takes a vertical photograph with the digital camera 1. The X direction is the width direction of the body of the digital camera 1. The Y direction is the height direction of the body of the digital camera 1. The Z direction is the depth direction of the body of the digital camera 1 (optical axis direction).

[0011] 2(a) and (b) are perspective views showing the rear appearance of the digital camera 1. FIG. 2 shows the digital camera 1 in a state in which the display unit 201 has been rotated open. The display unit 201 is a display unit provided on the rear of the digital camera 1, and displays images and various information. The display unit 201 is rotatably supported by a hinge mechanism (rotation mechanism) (not shown). The hinge mechanism is covered by a hinge cover 202 (cover portion). The hinge cover 202 has a first cover portion 202a and second cover portions 202b and 202c. The first cover portion 202a is fixed to the hinge mechanism, and rotates together with the display unit 201 when the display unit 201 rotates. The second cover portions 202b and 202c are provided adjacent to the first cover portion 202a on both sides of the first cover portion 202a in the Y direction. Unlike the first cover part 202a, the second cover parts 202b and 202c do not rotate together with the display part 201 even when the display part 201 rotates.

[0012] The display unit 201 can change the orientation of the display screen to a desired orientation by a hinge mechanism. When the display unit 201 is open, a recess 203 in which the display unit 201 is stored appears. A heat dissipation surface 203b is provided on a bottom wall 203a of the recess 203. A detailed description of the heat dissipation surface 203b will be given later. Side walls 204a, 204b, and 204c are provided on the periphery of the bottom wall 203a of the recess 203. In the following description, when the side walls 204a, 204b, and 204c are collectively referred to without distinction, they will be referred to as "side walls 204". The side walls 204b and 204c correspond to the second cover parts 202b and 202c. In other words, the second cover parts 202b and 202c constitute a part of the side walls 204.

[0013] A locking member 205 is provided on the side wall 204a. The locking member 205 is a member for locking the display unit 201 in the closed state. Locked portions 206a, 206b, 206c, and 206d are provided on the side wall 204a, 204b, and 204c of the recess 203. The locked portions 206a, 206b, 206c, and 206d are used when the cooling device 300 shown in FIG. 3 described later is attached to the recess 203 of the digital camera 1. The locked portions 206a, 206b, 206c, and 206d are provided in a concave shape on the side wall 204a, 204b, and 204c. The locked portions 206a and 206b are provided on the side wall 204a.

[0014] The locked portions 206c, 206d are provided on side wall portions 204b, 204c (i.e., second cover portions 202b, 202c of the hinge cover 202) adjacent to the first cover portion 202a of the hinge cover 202 in the Y direction. The locked portions 206a, 206b and the locked portions 206c, 206d are positioned opposite each other in the X direction. Note that the side wall portions 204b, 204c (i.e., second cover portions 202b, 202c of the hinge cover 202) on which the locked portions 206c, 206d are provided are portions that do not rotate in conjunction with the hinge mechanism, which is a rotation mechanism. That is, in the hinge cover 202, the first cover portion 202a rotates in conjunction with the hinge mechanism, but the locked portions 206c, 206d are provided on the second cover portions 202b, 202c which do not rotate in conjunction with the hinge mechanism.

[0015] In the following description, when the locked parts 206a, 206b, 206c, and 206d are collectively referred to without distinction, they will be written as "locked parts 206". The viewfinder 207 is for the user to look into during shooting or playback to check the subject or settings. The user can use the viewfinder 207 separately from the display part 201. A removable cap 208 is attached to the outside of the viewfinder 207. The cap 208 can be replaced with a cap of the user's choice. Inside the digital camera 1, a heat generating part 209 is provided at a position facing the heat dissipation surface 203b of the bottom wall part 203a of the recess 203 in the Z direction. A detailed description of the heat generating part 209 will be given later. Reference numerals 210 and 211 denote operation buttons (multiple operation parts) provided near the recess 203. Reference numeral 212 denotes a side wall part of the recess 203 near the operation buttons 210 and 211.

[0016] FIG. 3 is a perspective view showing the appearance of the cooling device 300 according to this embodiment. FIG. 3(a) is a perspective view showing the front appearance of the cooling device 300. FIG. 3(b) is a perspective view showing the rear appearance of the cooling device 300. FIG. 4 is an exploded perspective view of the cooling device 300. Hereinafter, the cooling device 300 will be described with reference to FIG. 3 and FIG. 4. The cooling device 300 has a fan storage section 301. The fan storage section 301 is composed of a front cover 301a and a rear cover 301b, and has openings for intake and exhaust. In the fan storage section 301, the front cover 301a and the rear cover 301b cover the fan 302 from the front and rear. As a result, the fan 302 is stored in the fan storage section 301.

[0017] The mounting parts 303 and 304 are fixed parts when the cooling device 300 is attached to the recess 203 of the digital camera 1. The mounting parts 303 and 304 are composed of front covers 303a and 304a and rear covers 303b and 304b, respectively. The mounting parts 303 and 304 are provided with connection parts 305a, 305b, 305c, and 305d. In the following description, when the connection parts 305a, 305b, 305c, and 305d are collectively referred to without distinction, they are written as "connection part 305". The connection parts 305a and 305b connect the mounting part 303 and the fan storage part 301. The connection parts 305c and 305d connect the mounting part 304 and the fan storage part 301. Therefore, the mounting portions 303 and 304 and the fan housing portion 301 are separated from each other via the connecting portions 305a, 305b, 305c, and 305d.

[0018] Elastic members 306a, 306b, 306c, and 306d are housed inside the connection parts 305a, 305b, 305c, and 305d. The elastic members 306a, 306b, 306c, and 306d include, for example, compression coil springs. As a result, the connection parts 305a, 305b, 305c, and 305d can freely expand and contract in the direction of the arrow A (X direction). Therefore, the user can narrow or widen the gap between the fan housing part 301 and the mounting parts 303 and 304 in the direction of the arrow A (X direction). Furthermore, the user can place the cooling device 300 in the recess 203 of the digital camera 1 in a state in which the gap between the fan housing part 301 and the mounting parts 303 and 304 is narrowed, that is, the gap between the mounting parts 303 and 304 is narrowed (see FIG. 5 described later). In the following description, when the elastic members 306a, 306b, 306c, and 306d are not to be distinguished from one another, they will be referred to collectively as "elastic members 306."

[0019] The mounting portion 303 is provided with locking portions 307a and 307b. The locking portions 307a and 307b are provided in a convex shape protruding outward from the mounting portion 303. The locking portions 307a and 307b are intended to engage with and lock the locked portions 206c and 206d provided on the side walls 204b and 204c of the recess 203 of the digital camera 1 with a concave-convex structure. The locking portions 307a and 307b can advance and retreat between a locked position and a retracted position by moving the mounting portion 303 in the direction of arrow A (X direction) due to elastic members 306a and 306b housed inside the connecting portions 305a and 305b.

[0020] Similarly, the mounting portion 304 is provided with locking portions 307c and 307d. The locking portions 307c and 307d are provided in a convex shape protruding outward from the mounting portion 304. The locking portions 307c and 307d are intended to engage with and lock the locked portions 206a and 206b provided on the side wall portion 204a of the recess 203 of the digital camera 1 with a concave-convex structure. The locking portions 307c and 307d can advance and retreat between the locked position and the retracted position by moving the mounting portion 303 in the direction of the arrow A (X direction) due to the elastic members 306c and 306d housed inside the connecting portions 305c and 305d.

[0021] Therefore, the locking portions 307a to 307d can engage with the locked portions 206a to 206d provided on the side wall portion 204a of the recessed portion 203 of the digital camera 1 on both sides in the body width direction (X direction) of the digital camera 1. In the following description, when the locking portions 307a, 307b, 307c, and 307d are referred to collectively without distinction, they will be written as "locking portion 307."

[0022] Mounting portion 303 houses power supply 308a for driving fan 302. Power supply 308a is electrically connected to fan 302 via an electrical connection member (not shown). Similarly, mounting portion 304 houses power supply 308b for driving fan 302. Power supply 308b is electrically connected to fan 302 via an electrical connection member (not shown). In the following description, when power supplies 308a and 308b are referred to collectively without distinction, they will be referred to as "power supply 308."

[0023] When cooling device 300 is placed in recess 203 of digital camera 1, mounting portions 303, 304 are pressed against side wall 204 of recess 203 of digital camera 1 by connecting portion 305 (elastic member 306 of connecting portion 305). Furthermore, when locking portion 307 reaches a position facing locked portion 206 provided on side wall 204 of recess 203 of digital camera 1, it enters and engages with locked portion 206. In this way, cooling device 300 is attached to recess 203 of digital camera 1. Furthermore, the attached state of cooling device 300 becomes stable.

[0024] The mounting portion 303 is provided with contact portions 309a and 309b on its rear surface. When the cooling device 300 is attached to the recess 203 of the digital camera 1, the contact portions 309a and 309b come into contact with the bottom wall portion 203a of the recess 203 of the digital camera 1 so as to abut against the bottom wall portion 203a. Similarly, the mounting portion 304 is provided with contact portions 309c and 309d on its rear surface. When the cooling device 300 is attached to the recess 203 of the digital camera 1, the contact portions 309c and 309d come into contact with the bottom wall portion 203a of the recess 203 of the digital camera 1 so as to abut against the bottom wall portion 203a. The contact portions 309a, 309b, 309c, and 309d are formed of an elastic body such as rubber. In the following description, when the contact portions 309a, 309b, 309c, and 309d are collectively referred to without distinction, they are written as "contact portion 309".

[0025] Since fan 302 generates air for cooling heat dissipation surface 203b and heat generating portion 209 by rotating an actuator (not shown), vibration of the actuator is transmitted to fan 302 and fan housing portion 301. Therefore, it is considered that vibration of the actuator is also transmitted to mounting portions 303 and 304 arranged next to fan housing portion 301 via connecting portions 305a to 305d. However, since elastic members 306a to 306d inside connecting portions 305a to 305d play a role in suppressing vibration, vibration of the actuator is unlikely to be transmitted from fan housing portion 301 to mounting portions 303 and 304.

[0026] Moreover, as described above, the attachment parts 303 and 304 are provided with the contact parts 309a. The contact parts 309a of the attachment parts 303 and 304 come into contact with the bottom wall part 203a of the recess 203 of the digital camera 1 in such a manner that they butt against it, thereby making the fan storage part 301 in which the fan 302 is stored a floating state in the recess 203 of the digital camera 1. Furthermore, since the contact parts 309 are made of an elastic material such as rubber, they play a role in suppressing vibration. As a result, the vibration of the actuator is not easily transmitted from the attachment parts 303 and 304 to the bottom wall part 203a of the recess 203 of the digital camera 1. That is, since the contact parts 309 are made of an elastic material such as rubber, the inside of the connection part 305 contains an elastic member 306 such as a compression coil spring, and the fan 302 is in a floating state, the vibration of the fan 302 of the cooling device 300 is not easily transmitted to the digital camera 1. In this regard, if vibrations are transmitted to digital camera 1, there is a risk that noise or noise caused by the vibrations will be recorded in the audio being shot, or that the image stabilization function will be adversely affected if digital camera 1 has an image stabilization function. Therefore, it is very significant that the vibrations of fan 302 of cooling device 300 are not easily transmitted to digital camera 1.

[0027] As described above, power supplies 308a, 308b are housed in the mounting portions 303, 304. The fan housing portion 301 and the mounting portions 303, 304 are electrically connected, and the fan 302 in the fan housing portion 301 can be driven by electricity being supplied from the power supplies 308a, 308b in the mounting portions 303, 304. In other words, since the cooling device 300 has the power supplies 308a, 308b, it is possible for the cooling device 300 alone to drive the fan 302.

[0028] Fig. 5 is a perspective view showing a state in which cooling device 300 is attached to recess 203 of digital camera 1. Although not shown in Fig. 5, when cooling device 300 is attached to recess 203 of digital camera 1, as described above, locking portion 307 of cooling device 300 is engaged with locked portion 206 of digital camera 1 via a concave-convex structure to be locked. Furthermore, contact portion 309 of cooling device 300 is in abutment against and contacting bottom wall portion 203a of recess 203 of digital camera 1.

[0029] The relationship between the bottom wall 203a, heat dissipation surface 203b, and heat generating portion 209 of the digital camera 1 and the contact portions 309a to 309d of the cooling device 300 will be described below. A board (not shown) is provided on the digital camera 1 on the inside in the Z direction from the recess 203, and a CPU 601 and other components shown in FIG. 6 described later are mounted on the board. The CPU 601 generates heat when performing processing such as photographing or video shooting. The CPU 601 is disposed approximately in the vicinity of the center of the bottom wall 203a of the recess 203 as viewed from the Z direction. Therefore, the CPU 601 is an example of the heat generating portion 209. The bottom wall 203a of the recess 203 is provided with a heat dissipation surface 203b at a position facing the heat generating portion 209 in the Z direction.

[0030] In digital camera 1, when heat generating section 209 generates heat, the heat is dissipated to the outside of digital camera 1 via heat dissipation surface 203b. In this way, digital camera 1 is configured to release heat from heat generating section 209 through heat dissipation surface 203b. Although not shown, inside digital camera 1, a metal plate-shaped heat sink, cooling sheet, or the like is sandwiched between heat generating section 209 and heat dissipation surface 203b of bottom wall section 203a of recess 203.

[0031] In the digital camera 1, as described above, the CPU 601 (heat generating unit 209) is disposed in the vicinity of the approximate center of the bottom wall 203a of the recess 203 as viewed from the Z direction, and therefore the heat dissipation surface 203b located in the approximate center of the bottom wall 203a of the recess 203 generates heat. On the other hand, when the cooling device 300 is attached to the recess 203 of the digital camera 1, the contact parts 309a to 309d of the cooling device 300 are not disposed in the central part of the bottom wall 203a of the recess 203 of the digital camera 1, but are disposed at the four corners of the bottom wall 203a of the recess 203. Therefore, the contact parts 309a to 309d of the cooling device 300 are disposed at positions that do not overlap the heat generating unit 209 of the digital camera 1 and the heat dissipation surface of the recess 203 in projection in the direction (Z direction) perpendicular to the heat dissipation surface 203b.

[0032] Furthermore, in a state where the cooling device 300 is attached to the recess 203 of the digital camera 1, the fan 302 of the fan housing section 301 of the cooling device 300 is disposed at a position facing the heat dissipation surface 203b of the bottom wall section 203a of the recess 203 of the digital camera 1 with a distance therebetween. In other words, the fan 302 of the cooling device 300 is disposed at a position where the heat generating section 209 of the digital camera 1 and the heat dissipation surface 203b of the bottom wall section 203a of the recess 203 overlap in projection in a direction perpendicular to the heat dissipation surface 203b (Z direction). As a result, the direction of the wind blown by the fan 302 of the cooling device 300 is approximately perpendicular to the heat dissipation surface 203b of the bottom wall section 203a of the recess 203 of the digital camera 1. In this way, the cooling effect of the fan 302 of the cooling device 300 is improved.

[0033] 6 is a block diagram showing a system including digital camera 1 and cooling device 300. In digital camera 1, CPU 601 is a central processing unit that controls the overall operation of digital camera 1, and executes various processes and instructions for each circuit unit. CPU 601 controls each functional block of digital camera 1 and performs necessary calculations according to a computer program loaded from memory. A control board (not shown) is mounted with various components such as CPU 601, that is, many of the various electric circuits (detection circuits, control circuits, processing circuits) including a camera microcomputer. The control board is a printed wiring board (PWB: Printed Wired Board). A camera power supply 602 supplies power to each circuit in digital camera 1.

[0034] The imaging sensor 603 is composed of a CCD or CMOS sensor. An optical image of a subject captured by the imaging sensor 603 is converted into an image signal. The image signal obtained by the imaging sensor 603 is converted into image data by an image processing unit 604 and output to the CPU 601. A shutter 605 is disposed in front of the imaging sensor 603. The shutter 605 adjusts the exposure time of the imaging sensor 603. The shutter control unit 606 drives the shutter 605 based on a signal input from the CPU 601. When the operation button 210 in FIG. 2 is pressed by a user, an operation detection unit 607 outputs a signal to the CPU 601, thereby changing the shooting conditions such as exposure and shutter speed. A lock unit 307 of the cooling device 300 is engaged with the locked unit 206 of the digital camera 1. A power source 308 of the cooling device 300 supplies power for driving the fan 302.

[0035] As described above, in cooling device 300, attachment parts 303, 304 are pressed against side wall part 204 of recess 203 of digital camera 1 by connecting part 305, and lock part 307 engages with locked part 206 provided on side wall part 204 of recess 203 of digital camera 1. In this way, cooling device 300 is attached to recess 203 of digital camera 1. To achieve such attachment, the user simply places cooling device 300 in recess 203 of digital camera 1 with fan housing part 301 and attachment parts 303, 304 narrowed by expandable connecting part 305. In this way, the user can easily attach cooling device 300 to recess 203 of digital camera 1 where heat dissipation surface 203b is located. In addition, the user can easily remove the cooling device 300, which is attached in the recess 203 of the digital camera 1, from the recess 203 of the digital camera 1 by returning the space between the fan storage section 301 and the mounting sections 303, 304 to a narrower state using the expandable connecting section 305.

[0036] Furthermore, when the cooling device 300 is attached to the recess 203 of the digital camera 1, the mounting parts 303, 304 of the cooling device 300 are pressed against the side wall parts 204 of the recess 203 of the digital camera 1 on both sides of the body width direction of the digital camera 1 as described above. Furthermore, the locking part 307 of the cooling device 300 engages with the locked part 206 of the recess 203 of the digital camera 1. Therefore, as long as the mounting parts 303, 304 of the cooling device 300 can be pressed against the side wall parts 204 of the recess 203 of the digital camera 1 and the locking part 307 can be engaged on both sides of the body width direction of the digital camera 1, the cooling device 300 can be attached regardless of the size of the recess 203 of the digital camera 1. This point is also the same for a digital camera that does not have a vertical grip and has only a horizontal grip, and has side walls of the recess on both sides of the body width direction, unlike the digital camera 1 according to this embodiment. Also, the same is true for a digital camera that has a recess in which items other than the display unit are stored by rotation or the like, unlike the digital camera 1 according to this embodiment. Therefore, unlike the cooling unit disclosed in the above-mentioned Patent Document 1, the cooling device 300 can be attached to recesses of various digital cameras.

[0037] Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications and changes are possible within the scope of the gist of the present invention. For example, in this embodiment, the locked portion 206 provided on the side wall portion 204 of the recess 203 of the digital camera 1 has a concave shape, but it may have a convex shape. In this case, by making the locking portion 307 of the mounting portions 303 and 304 of the cooling device 300 have a concave shape, the concave-convex relationship between the locked portion 206 of the digital camera 1 and the locking portion 307 of the cooling device 300 is reversed. This allows the user to attach the cooling device 300 to the recess 203 of the digital camera 1 in the same manner as in this embodiment.

[0038] In this embodiment, the mounting parts 303, 304 and the locking part 307 of the cooling device 300 are disposed on both sides of the body width direction (X direction) of the digital camera 1 when the cooling device 300 is attached to the recess 203 of the digital camera 1. However, the mounting parts 303, 304 and the locking part 307 of the cooling device 300 are not limited to this, and may be disposed on both sides of the body height direction (Y direction) of the digital camera 1, for example. In this case, the locked parts 206a, 206b of the digital camera 1 are provided on the side wall part 212 of the recess 203 between the operation buttons 210, 211 nearby. Furthermore, the locked parts 206c, 206d are provided on the side wall part that faces the side wall part 212 of the recess 203 in the body height direction (Y direction) of the digital camera 1.

[0039] Also, the number of mounting parts 303, 304 of the cooling device 300 is not limited to two. For example, the cooling device 300 may be configured to have four parts corresponding to the mounting parts 303, 304, two each in the X direction and the Y direction. In this case, when the cooling device 300 is attached to the recess 203 of the digital camera 1, two parts corresponding to the mounting parts 303, 304 of the cooling device 300 are arranged in the body width direction and the body height direction of the digital camera 1. Also, if no vibration problem occurs, the number of mounting parts 303, 304 of the cooling device 300 may be limited to one. In this case, the fan storage part 301 of the cooling device 300 is pressed against the side wall part 204 of the recess 203 of the digital camera 1 of the cooling device 300.

[0040] In the present embodiment, the cooling device 300 allows the user to narrow or widen the gap between the fan housing section 301 and the mounting sections 303 and 304 by using the expansion and contraction function of the elastic member 306 housed inside the connection section 305. However, a part of each of the connection sections 305a to 305d may be a screw structure, and the rotational movement of the screw structure may be converted into a linear movement, thereby narrowing or widening the gap between the fan housing section 301 and the mounting sections 303 and 304. In this case, a male screw and a female screw may be formed in a part of each of the connection sections 305a to 305d, and the part of each of the connection sections 305a to 305d may be rotated by the screw structure in which the male screw and the female screw are combined. This narrows or widens the gap between the fan housing section 301 and the mounting sections 303 and 304. The user can attach the cooling device 300 to fit the size of the recess 203 of the digital camera 1 by narrowing or widening the space between the fan storage section 301 and the mounting sections 303, 304 in the cooling device 300 using a screw structure that combines male and female threads.

[0041] Also, in this embodiment, the locking portion 307 is provided on the mounting portions 303, 304 of the cooling device 300. However, the cooling device 300 can be attached to the recess 203 of the digital camera 1 even if the locking portion 307 is not provided on the mounting portions 303, 304. In this case, since it is not necessary to provide the locked portion 206 on the digital camera 1, it may be possible to attach the cooling device 300 to the recess of a conventional digital camera.

[0042] The disclosure of this embodiment includes the following configuration. (Configuration 1) A cooling device that can be attached to a recess of an electronic device, a fan for cooling a heat dissipation surface in the recess of the electronic device; a fan storage section that stores the fan; a mounting portion spaced from the fan housing portion; a connecting portion that connects the fan storage portion and the mounting portion and is extendable and contractible; A lock portion provided on the mounting portion, A cooling device characterized in that, when the cooling device is attached to the recess of the electronic device, the mounting portion is pressed against the side wall portion of the recess of the electronic device by the connection portion, and the locking portion engages with a locked portion provided on the side wall portion of the recess of the electronic device. (Configuration 2) The cooling device according to configuration 1, wherein the locking portion engages with the locked portion provided on the side wall of the recess of the electronic device through a concave-convex structure. (Configuration 3) The cooling device according to configuration 1 or 2, wherein the locking portion engages with the locked portion provided on the side wall portion of the recess of the electronic device at least on both sides in the width direction of the body of the electronic device. (Configuration 4) The cooling device according to configuration 1 or 2, wherein the locking portion engages with the locked portion provided on the side wall portion of the recess of the electronic device at least on both sides in the height direction of the main body of the electronic device. (Configuration 5) The cooling device according to any one of configurations 1 to 4, further comprising an elastic member housed in the connection portion. (Configuration 6) The cooling device according to any one of configurations 1 to 4, wherein the connection portion has a screw structure in which a male screw and a female screw are combined. (Configuration 7) A contact portion is provided on the mounting portion, The cooling device described in any one of configurations 1 to 6, characterized in that when the cooling device is attached to the recess of the electronic device, the contact portion abuts against the bottom wall portion of the recess of the electronic device, thereby separating the fan of the fan storage portion from the bottom wall portion of the recess of the electronic device. (Configuration 8) The cooling device according to configuration 7, wherein the contact portion is an elastic body. (Configuration 9) A cooling device as described in configuration 7 or 8, characterized in that when the cooling device is attached to the recess of the electronic device, the contact portion is positioned at a position that does not overlap with the heat dissipation surface of the recess of the electronic device in a direction perpendicular to the heat dissipation surface, and further, the fan of the fan storage portion is positioned at a position facing and spaced apart from the heat dissipation surface of the recess of the electronic device. (Configuration 10) A power source for driving the fan is provided, The cooling device according to any one of configurations 1 to 9, wherein the power supply is housed in the mounting portion. (Configuration 11) A cooling device that can be attached to a recess of an electronic device, a fan for cooling a heat dissipation surface in the recess of the electronic device; a fan storage section that stores the fan; a mounting portion spaced from the fan housing portion; a connecting portion that connects the fan storage portion and the mounting portion and is extendable and contractible; A cooling device, characterized in that, when the cooling device is attached to the recess of the electronic device, the attachment portion is pressed against a side wall portion of the recess of the electronic device by the connection portion. (Configuration 12) An electronic device to which the cooling device according to any one of configurations 1 to 11 can be attached. (Configuration 13) The electronic device according to configuration 12, further comprising a display unit housed in the recess. (Configuration 14) A rotation mechanism for the display unit; A cover portion for covering the rotation mechanism is provided. The cover portion is A first cover portion that rotates together with the display portion; a second cover portion constituting a part of the side wall portion of the recess, 14. The electronic device according to configuration 13, wherein the second cover portion is provided with the locked portion. (Configuration 15) A plurality of operation units are provided in the vicinity of the recess, 15. The electronic device according to any one of configurations 12 to 14, wherein the locked portion is provided on the side wall of the recess between the plurality of operating portions. [Explanation of symbols]

[0043] 1. Digital camera (electronic device) 203 Recess 203b Heat dissipation surface 204 Side wall 206 Locked part 300 Cooling device 301 Fan storage section 302 Fan 303, 304 Mounting part 305 Connection 307 Rock Club

Claims

1. A cooling device that can be attached to a recess of an electronic device, a fan for cooling a heat dissipation surface in the recess of the electronic device; a fan storage section that stores the fan; a mounting portion spaced from the fan housing portion; a connecting portion that connects the fan storage portion and the mounting portion and is extendable and contractible; A lock portion provided on the mounting portion, A cooling device characterized in that, when the cooling device is attached to the recess of the electronic device, the mounting portion is pressed against the side wall portion of the recess of the electronic device by the connection portion, and the locking portion engages with a locked portion provided on the side wall portion of the recess of the electronic device.

2. 2. The cooling device according to claim 1, wherein the locking portion engages with the locked portion provided on the side wall of the recess of the electronic device through a projection-recess structure.

3. 2. The cooling device according to claim 1, wherein the locking portion engages with the locked portion provided on the side wall of the recess of the electronic device at least on both sides in a body width direction of the electronic device.

4. 2. The cooling device according to claim 1, wherein the locking portion engages with the locked portion provided on the side wall of the recess of the electronic device at least on both sides in a body height direction of the electronic device.

5. The cooling device according to claim 1 , further comprising an elastic member housed in the connecting portion.

6. 2. The cooling device according to claim 1, wherein the connecting portion has a threaded structure in which a male thread and a female thread are combined.

7. A contact portion is provided on the mounting portion, The cooling device according to claim 1, characterized in that when the cooling device is attached to the recess of the electronic device, the contact portion abuts against the bottom wall portion of the recess of the electronic device, thereby separating the fan of the fan storage portion from the bottom wall portion of the recess of the electronic device.

8. The cooling device according to claim 7, wherein the contact portion is made of an elastic material.

9. The cooling device described in claim 7, characterized in that when the cooling device is attached to the recess of the electronic device, the contact portion is positioned at a position that does not overlap with the heat dissipation surface of the recess of the electronic device in a direction perpendicular to the heat dissipation surface, and further, the fan of the fan storage portion is positioned at a position facing the heat dissipation surface of the recess of the electronic device at a distance.

10. A power source for driving the fan is provided. The cooling device according to claim 1 , wherein the power supply is housed in the mounting portion.

11. A cooling device that can be attached to a recess of an electronic device, a fan for cooling a heat dissipation surface in the recess of the electronic device; a fan storage section that stores the fan; a mounting portion spaced from the fan housing portion; a connecting portion that connects the fan storage portion and the mounting portion and is extendable and contractible; A cooling device, characterized in that, when the cooling device is attached to the recess of the electronic device, the attachment portion is pressed against a side wall portion of the recess of the electronic device by the connection portion.

12. An electronic device to which the cooling device according to claim 1 can be attached.

13. The electronic device according to claim 12 , further comprising a display unit housed in the recess.

14. A rotation mechanism for the display unit; A cover portion for covering the rotation mechanism is provided. The cover portion is A first cover portion that rotates together with the display portion; a second cover portion constituting a part of the side wall portion of the recess, The electronic device according to claim 13 , wherein the second cover portion is provided with the locked portion.

15. A plurality of operation units are provided in the vicinity of the recess, The electronic device according to claim 12 , wherein the locked portion is provided on the side wall of the recess between the plurality of operation portions.

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