WO2016194479A1

WO2016194479A1 - Image pickup device

Info

Publication number: WO2016194479A1
Application number: PCT/JP2016/061579
Authority: WO
Inventors: 恭男湯山; 紀明高木; 曜介志水; 拓也本石; 鈴木　匠; 良憲山田
Original assignee: ソニー株式会社
Priority date: 2015-05-29
Filing date: 2016-04-08
Publication date: 2016-12-08
Also published as: JP2016225780A

Abstract

The present invention ensures a simplified structure and improves user safety. Provided is a device body onto which an operation unit is disposed. In a case where the end surface of the subject-side of the device body is the front surface thereof when the device body performs image pickup, heat dissipating parts which dissipate the heat generated when the image pickup device is driven are positioned on the rear side of the device body from the front surface thereof. The device body is provided with a guard part which covers at least some of the heat dissipating parts. Due to this configuration, because the heat dissipating parts are covered by the guard part in a state where the heat dissipating parts are positioned on the rear side of the device body from the front surface thereof, the user's fingers are prevented from touching the heat dissipating parts by the guard part, and it is possible to ensure a simplified structure and improve user safety.

Description

Imaging device

This technology relates to the technical field of an image pickup apparatus having a function of releasing heat generated when an image pickup element is driven from a heat radiating portion.

JP 2008-245144 A

Various image pickup apparatuses such as a video camera and a still camera have a predetermined operation unit, for example, an apparatus main body on which a shutter button, a zoom knob, and the like are arranged.

When the shutter button is operated in such an image pickup apparatus, an optical image of a subject is taken into the image pickup device via an image pickup optical system such as a lens, and the picked-up optical image is photoelectrically converted by the image pickup device to generate an image or video. Is generated. The image sensor is disposed on the substrate, and heat is generated from the image sensor and the substrate when the image sensor is driven.

Since heat generated from the image sensor or the substrate when driving the image sensor may interfere with a good driving state of the image sensor, the image pickup apparatus is provided with a heat radiating unit for releasing the generated heat. There is one that suppresses the temperature rise of the element (for example, see Patent Document 1).

In the imaging apparatus described in Patent Document 1, a lens unit (interchangeable lens) is provided with a heat transfer plate that is in contact with the back surface of the substrate and a heat transfer plate cover that covers the heat transfer plate. The main body is provided with a heat sink that functions as a heat radiating portion and a heat sink cover that covers the heat sink. The heat transfer plate is provided with a convex portion, and insertion holes are formed in the heat transfer cover and the heat sink, respectively, so that the heat transfer cover can be moved in the optical axis direction.

When the lens unit is detached from the camera body, the entire heat transfer plate including the convex portions is covered with the heat transfer plate cover and the heat sink is covered with the heat sink cover.

When the lens unit is attached to the camera body, the heat transfer plate cover is moved in a direction approaching the heat transfer plate, and the convex portion of the heat transfer plate is inserted into the insertion hole of the heat transfer plate cover and the insertion hole of the heat sink cover. The tip surface of the part is in contact with the heat sink. Therefore, the heat generated when the image pickup element is driven is transmitted from the convex portion of the heat transfer plate to the heat sink, and is released from the heat sink to the inside of the apparatus main body.

When the lens unit is removed from the camera body, the heat transfer plate cover is moved away from the heat transfer plate, the convex portions of the heat transfer plate are taken out from the respective insertion holes, and the entire heat transfer plate including the convex portions is transferred. Covered with hot plate cover.

As described above, in the imaging apparatus described in Patent Document 1, the convex portion of the heat transfer plate is brought into contact with the heat sink in the lens unit and the camera body when the lens unit is attached to the camera body. When not attached to the main body, the entire heat transfer plate including the convex portions is covered with the heat transfer plate cover and the heat sink is covered with the heat sink cover.

Therefore, since the user does not touch the heat transfer plate and the heat sink regardless of whether the lens unit is attached to or detached from the camera body, the user can handle the imaging device in a safe state.

However, in the imaging apparatus described in Patent Document 1, in order to ensure the safety of the user as described above, a heat transfer plate cover and a heat sink cover are provided and the heat transfer plate cover is moved. The moving mechanism is provided.

Therefore, the number of parts is large and the structure of the image pickup apparatus becomes complicated, which may increase the manufacturing cost.

Therefore, the imaging device of the present technology aims to overcome the above-described problems and improve the safety of the user after ensuring the simplification of the structure.

First, an imaging apparatus according to an embodiment of the present technology includes an apparatus main body in which an operation unit is disposed, and heat generated when the imaging element is driven when an end surface on a subject side at the time of photographing of the apparatus main body is a front surface. A heat radiating part to be released is located behind the front surface of the apparatus main body, and a guard part that covers at least a part of the heat radiating part is provided on the apparatus main body.

Thus, the heat radiating part is covered by the guard part in a state where the heat radiating part is located behind the front surface of the apparatus main body.

Second, in the above-described imaging apparatus, it is desirable that an element block having the heat radiating portion and the imaging element is provided, and the element block is detachable from the apparatus main body.

This makes it possible to shoot by attaching / detaching a desired type of element block to / from the apparatus body in accordance with the shooting mode such as the type of subject and the surrounding environment.

Thirdly, in the imaging apparatus described above, it is desirable that an insertion hole through which the element block is inserted when the element block is attached or detached is formed in the guard portion.

Thus, the element block is inserted into the insertion hole and attached to or detached from the apparatus main body.

Fourth, in the imaging apparatus described above, at least a part of the element block is inserted into the insertion hole in a state where the element block is attached to the apparatus main body, and the inner peripheral surface of the guard portion and the element block It is desirable that a gap be formed between the outer peripheral surface of each other.

This causes the heat released from the heat radiating part to be discharged from the gap to the outside of the device body.

Fifth, in the imaging apparatus described above, it is preferable that a discharge hole for discharging heat released from the heat radiating portion to the outside is formed in the apparatus main body.

Thus, the heat released from the heat radiating portion is discharged from the discharge hole to the outside of the apparatus main body, and heat is not easily transmitted to the apparatus main body, so that the apparatus main body does not become hot.

Sixth, in the above-described imaging apparatus, it is desirable that a plurality of the discharge holes are formed in the apparatus main body, and the discharge holes are positioned on the opposite side at least across the element block.

This causes the heat released from the heat dissipation part to be discharged to the outside of the device body from both sides of the element block.

Seventhly, in the above-described imaging device, the element block is provided with a holder portion for holding the imaging element, and the outer shape is formed to be smaller as the heat radiating portion is separated from the holder portion. It is desirable.

Because of this, the size of the outer shape of the heat radiating part is changed, so that it is difficult for the finger to come into contact with the heat radiating part when the element block is gripped.

Eighth, in the above-described imaging device, it is desirable that the heat dissipating part is formed in an annular shape and heat dissipating fins are provided in the entire circumferential direction of the heat dissipating part.

This causes heat to be released from the radiating fin to the outer peripheral side of the radiating portion.

Ninthly, in the above-described imaging device, it is desirable that a cover portion that covers the heat dissipation portion is provided outside the heat dissipation portion, and the heat dissipation portion and the cover portion are positioned in a non-contact state.

This makes it difficult for heat released from the heat dissipating part to be transmitted to the covering part.

Tenth, in the above-described imaging apparatus, it is desirable that the interchangeable lens be detachable from the element block.

This makes it possible to shoot by attaching / detaching a desired type of interchangeable lens to / from the element block according to the shooting mode such as the type of subject, the location of the subject, and the surrounding environment.

Eleventh, an imaging apparatus according to another embodiment of the present technology includes an apparatus main body in which an operation unit is disposed, and an element block including an imaging element and a heat radiating unit that releases heat generated when the imaging element is driven, A guard portion that covers at least a part of the heat radiating portion on the apparatus main body, the heat radiating portion being located on the rear side of the front surface of the apparatus main body when an end surface on the subject side during photographing of the apparatus main body is the front surface Is provided.

Twelfth, in the imaging apparatus described above, it is desirable that the element block be detachable from the apparatus main body.

Thirteenthly, in the above-described imaging device, it is preferable that an insertion hole through which the element block is inserted when the element block is attached or detached is formed in the guard portion.

14thly, in the imaging device described above, at least a part of the element block is inserted into the insertion hole in a state where the element block is attached to the apparatus body, and the inner peripheral surface of the guard portion and the element block It is desirable that a gap be formed between the outer peripheral surface of each other.

Fifteenthly, in the imaging apparatus described above, it is preferable that a discharge hole for discharging heat released from the heat radiating portion to the outside is formed in the apparatus main body.

Sixteenth, in the above-described imaging apparatus, it is desirable that a plurality of the discharge holes are formed in the apparatus main body, and the discharge holes are positioned at least on the opposite side across the element block.

Seventeenth, in the above-described imaging device, the element block is provided with a holder portion for holding the imaging element therein, and the outer shape is formed to be smaller as the heat radiating portion is separated from the holder portion. It is desirable.

Eighteenth, in the imaging apparatus described above, it is desirable that the heat radiating portion is formed in an annular shape, and a heat radiating fin is provided in the entire circumferential direction of the heat radiating portion.

Nineteenth, in the above-described imaging device, it is desirable that a cover portion for covering the heat dissipation portion is provided outside the heat dissipation portion, and the heat dissipation portion and the cover portion are positioned in a non-contact state.

20thly, in the above-described imaging apparatus, it is desirable that the interchangeable lens be detachable from the element block.

According to the present technology, since the heat radiating part is covered with the guard part in a state of being located on the rear side of the front surface of the apparatus main body, the contact with the heat radiating part of the user's finger is prevented by the guard part, and the structure is simplified. It is possible to improve the safety of the user while ensuring the above.

It should be noted that the effects described in this specification are merely examples and are not limited, and may have other effects.

2 to FIG. 17 show an embodiment of an imaging apparatus of the present technology, and this figure is an exploded perspective view showing an apparatus main body, an element block, and an interchangeable lens. It is a perspective view which shows the state with which the element block was attached to the apparatus main body with an interchangeable lens. It is a perspective view which shows an apparatus main body, an element block, and an interchangeable lens. It is a rear view of an apparatus main body. It is a side view which shows the state in which the element block was attached to the apparatus main body. It is a front view which shows the state in which the element block was attached to the apparatus main body. It is a side view of an element block. It is a perspective view of an element block. It is a general | schematic expanded sectional view which shows the example in which the cover part was provided. 11 to 14 show a modification of the element block, and this figure is a perspective view showing a first modification. It is a perspective view which shows the 2nd modification. It is a perspective view which shows a 3rd modification. It is a perspective view which shows the 4th modification. It is a perspective view which shows the 5th modification. It is a disassembled perspective view which shows the 1st structural example of an imaging device. It is a side view which shows the 2nd structural example of an imaging device. It is a block diagram.

Hereinafter, modes for carrying out the present technology will be described with reference to the accompanying drawings.

In the embodiment described below, the imaging device of the present technology is applied to a still camera.

Note that the scope of application of the present technology is not limited to a still camera, and can be widely applied to, for example, various cameras including a camera module incorporated in a video camera or other devices.

In the following explanation, it is assumed that the front, rear, up, down, left, and right directions are shown in the direction seen from the photographer at the time of shooting. Therefore, the subject side is the front and the photographer side is the rear.

It should be noted that the front, rear, up, down, left, and right directions shown below are for convenience of explanation, and the implementation of the present technology is not limited to these directions.

Further, the lens group shown below may include one or a plurality of lenses and other optical elements such as a diaphragm and an iris in addition to the lens group including one or a plurality of lenses.

[Configuration of imaging device]
The imaging device 1 is composed of a device body 2 and an element block 3 (see FIGS. 1 to 3). The imaging device 1 may be configured to include the interchangeable lens 4 in addition to the device body 2 and the element block 3. In this case, the interchangeable lens 4 may be detachable from the element block 3.

By making the interchangeable lens 4 attachable to and detachable from the element block 3, a desired type of interchangeable lens 4 can be attached to and detached from the element block 3 in accordance with the photographing mode such as the type of subject, the position of the subject and the surrounding environment. This makes it possible to improve usability and improve image quality.

The apparatus main body 2 includes a housing 5 and

various operation units

6, 6,.

The housing 5 has a body portion 7 formed in a horizontally long shape, a flash mounting portion 8 provided on the upper side of the body portion 7, and a guard portion 9 provided on the front side of the body portion 7.

The main body portion 7 includes a base portion 10 formed in a horizontally long flat and substantially rectangular shape, and a hold portion 11 protruding forward from the right end portion of the base portion 10.

An attachment portion 10 a for attaching the element block 3 is provided at a position closer to the left side on the front side of the base portion 10. The attachment portion 10a has a circular outer shape, and the element block 3 is attached to the attachment portion 10a by, for example, bayonet coupling. A display 12 is disposed on the rear surface of the base portion 10 at a position excluding a part (see FIG. 4). An openable / closable cover 13 is disposed on one side surface of the base portion 10 (see FIG. 5). Inside the cover 13, various parts such as an earphone jack and connection terminals (not shown) are provided.

The hold portion 11 is a portion that is held by the user during photographing, and has an outer surface that extends from the front portion to the left and right sides (see FIGS. 1 to 3). Since the outer surface extending from the front part of the hold unit 11 to both the left and right side surfaces is formed in a curved shape, the user can hold the hold unit 11 without a sense of incongruity at the time of photographing, and is stable due to good gripping properties. Can be ensured.

The flash mounting portion 8 is provided with a front end portion and a rear end portion protruding forward and rearward from the base portion 10, respectively. A light emitter (flash unit) (not shown) can be attached to and detached from the flash mounting portion 8. A finder window 14 is disposed on the rear surface of the flash mounting portion 8 (see FIG. 4).

As shown in FIGS. 1 to 3, the guard portion 9 includes a substantially annular annular portion 15 and a connecting portion 16 protruding rearward from the lower end portion of the annular portion 15, and the upper end portion of the annular portion 15 is The flash mounting portion 8 is coupled to the front end portion, and the rear end portion of the coupling portion 16 is coupled to the lower end portion of the base portion 10.

The space inside the annular portion 15 is formed as a circular insertion hole 15a, and the center of the insertion hole 15a coincides with the center of the mounting portion 10a in the front-rear direction (see FIG. 6). The inner diameter of the annular portion 15 is made slightly larger than the outer diameter of the mounting portion 10a. Spaces penetrating in the left-right direction are formed between the left and right side portions of the annular portion 15 and the base portion 10, and these spaces serve as discharge holes 15b and 15b (see FIGS. 1 to 3).

As the

operation units

6, 6,..., For example, a power button, a shutter button, a zoom knob, a mode selection button, a mode switching button, and the like are provided. The

operation units

6, 6,... Are mainly provided on the upper surface and the rear surface of the main body unit 7 (see FIGS. 1 to 4).

The element block 3 includes a holder part 17, an attaching / detaching part 18, an imaging unit 19, and a heat radiating part 20 (see FIGS. 1, 7, and 8).

The holder portion 17 has a circular outer shape and has an arrangement recess 17a that opens forward. A mount portion 17 b to which the interchangeable lens 4 is attached is provided at the front end portion of the holder portion 17. A release knob 21 is disposed on the holder portion 17.

The detachable portion 18 protrudes rearward from the portion excluding the outer peripheral portion of the holder portion 17 and is formed in a circular shape whose outer shape is slightly smaller than the diameter of the holder portion 17.

The imaging unit 19 includes an imaging element 22 such as a CCD (Charge Coupled Device) or CMOS (Complementary Metal-Oxide Semiconductor) and a substrate 23 for driving the imaging element 22. The imaging element 22 is disposed on the front surface of the substrate 23. Has been. The imaging unit 19 is inserted and arranged in the arrangement recess 17 a of the holder part 17 and is held by the holder part 17.

The heat dissipating part 20 is arranged on the outer peripheral side of the attaching / detaching part 18 and is formed in an annular shape. Heat generated when the image sensor 22 is driven is transmitted to the heat radiating unit 20. The heat radiating portion 20 includes an annular front coupling portion 20a, an annular rear coupling portion 20b, and a plurality of radiating

fins

20c, 20c provided between the front coupling portion 20a and the rear coupling portion 20b. It is desirable that and are integrally formed and made of a material having higher heat dissipation than the holder portion 17.

The front coupling part 20 a is located immediately behind the holder part 17 and has an outer diameter substantially the same as the outer diameter of the holder part 17. The diameter of the rear coupling part 20b is smaller than the diameter of the front coupling part 20a. The

radiation fins

20c, 20c,... Are positioned at equal intervals in the circumferential direction.

As described above, the heat radiating portion 20 is formed in such a shape that the outer diameter becomes smaller as it is separated from the holder portion 17 because the diameter of the rear coupling portion 20b is smaller than that of the front coupling portion 20a.

The element block 3 is detachably attached to the apparatus main body 2 (see FIGS. 1 to 3). The element block 3 has the detachable portion 18 attached to the attachment portion 10a of the apparatus main body 2 by, for example, bayonet coupling. The element block 3 can be attached to the attachment part 10a by inserting the element block 3 into the insertion hole 15a of the guard part 9, pressing the attachment / detachment part 18 against the attachment part 10a, and rotating the element block 3 to one side in the circumferential direction. When the element block 3 is attached to the apparatus main body 2, the element block 3 is locked to the apparatus main body 2 by a lock mechanism (not shown).

In a state where the element block 3 is attached to the apparatus main body 2, the heat radiating portion 20 is located behind the front surface 15 c of the annular portion 15 in the guard portion 9, and the discharge holes 15 b and 15 b are located on the left and right sides of the heat radiating portion 20, respectively. (See FIG. 5). In the state where the element block 3 is attached to the apparatus main body 2, at least a part of the holder portion 17 of the element block 3 protrudes forward from the guard portion 9. Further, when the element block 3 is attached to the apparatus main body 2, a gap 24 is formed between the outer peripheral surface of the element block 3 and the inner peripheral surface of the annular portion 15 in the guard portion 9 (see FIG. 6). ).

The element block 3 is detached from the apparatus main body 2 by operating a release button (not shown) provided on the apparatus main body 2 to release the lock, rotating the element block 3 to the other side in the circumferential direction, and taking it out from the insertion hole 15a. Can be performed.

At this time, the user rotates the element block 3 while holding the holder portion 17 protruding forward from the guard portion 9. Therefore, since the user rotates the element block 3 by grasping a part other than the heat radiating part 20, the finger does not come into contact with the heat radiating part 20 that is likely to be hot, and the element block 3 is removed from the apparatus main body 2 in a safe state. be able to.

As described above, since the element block 3 can be attached to and detached from the apparatus main body 2, a desired type of element block 3 can be attached to and detached from the apparatus main body 2 in accordance with the photographing mode such as the type of subject and the surrounding environment. It is possible to improve the usability and the image quality. In particular, by preparing an element block 3 having an image sensor 22 with a large number of pixels or a sensor element 22 having a high sensitivity, it is possible to generate a high-quality image according to the type of subject. Become.

The element block 3 may be formed integrally with the apparatus main body 2 as a part of the apparatus main body 2. In this case, the holder unit 17, the imaging unit 19, and the heat radiating unit 20, which are each part of the element block 3, are provided. A part of the configuration of the main body 2 is used.

The interchangeable lens 4 has a cylindrical outer casing 25 and a lens group 26 arranged inside the outer casing 25 (see FIGS. 1 to 3). The interchangeable lens 4 is provided with a zoom ring 27 and a focus ring 28 that are rotatably supported by the outer casing 25. Manual zooming is performed by rotating the zoom ring 27, and manual focusing is performed by rotating the focus ring 28.

At the rear end of the interchangeable lens 4, for example, a lens mount 29 that is bayonet-coupled to the mount portion 17 b of the element block 3 is provided.

The attachment of the interchangeable lens 4 to the mount portion 17b in the element block 3 can be performed by pressing the lens mount 29 against the mount portion 17b and rotating the interchangeable lens 4 to one side in the circumferential direction. When the interchangeable lens 4 is attached to the element block 3, the interchangeable lens 4 is locked to the element block 3 by a lock unit (not shown).

On the other hand, to remove the interchangeable lens 4 from the element block 3, the release knob 21 provided in the element block 3 is operated to release the lock, and the interchangeable lens 4 is rotated to the other side in the circumferential direction. This can be done by pulling away from the element block 3.

[Heat dissipation state in the imaging device]
In the imaging apparatus 1 configured as described above, a subject can be captured when the still image capturing mode or the moving image capturing mode is set. At the time of shooting, an image of the subject captured by the lens group 26 of the interchangeable lens 4 is incident on the image sensor 22 of the element block 3 and is subjected to photoelectric conversion (analog / digital conversion) by the image sensor 22 to be a predetermined processing unit of the apparatus main body 2. To generate an image or video.

The image sensor 22 is driven during photographing. When the image sensor 22 is driven, heat is generated in the image sensor 22 and the substrate 23, and the generated heat is transmitted to the heat radiating unit 20 and released from the heat radiating unit 20.

At this time, the element block 3 has the heat radiating portion 20 formed in an annular shape, and the

heat radiating fins

20c, 20c,... The heat is released to the outer peripheral side from each of the two to ensure high heat dissipation and to ensure a good driving state of the image sensor 22. It should be noted that the heat generated when the image pickup device 22 is driven is also released from the front coupling portion 20a and the rear coupling portion 20b in addition to the

radiation fins

20c, 20c,.

Further, the heat released from the heat radiating unit 20 is mainly discharged from the discharge holes 15b and 15b formed in the apparatus main body 2 to the outside of the apparatus main body 2.

Thus, since the apparatus main body 2 is formed with the discharge holes 15b and 15b for discharging the heat released from the heat radiating section 20, the heat released from the heat radiating section 20 is discharged from the discharge holes 15b and 15b to the apparatus main body 2. It is reliably discharged outside. Therefore, heat is not easily transmitted to the apparatus main body 2, and the apparatus main body 2 does not reach a high temperature, and the temperature rise of the image pickup element 22 and the apparatus main body 2 is suppressed to ensure a good operation state of the image pickup element 22 and the apparatus main body 2. can do.

Further, since the apparatus main body 2 is formed with

discharge holes

15b and 15b positioned on the opposite side across the element block 3, the heat released from the heat radiating portion 20 from both sides of the element block 3 It is discharged to the outside, and the temperature rises of the image sensor 22 and the apparatus main body 2 are further suppressed, and a better operating state of the image sensor 22 and the apparatus main body 2 can be ensured.

Further, when the element block 3 is attached to the apparatus main body 2, a gap 24 is formed between the outer peripheral surface of the element block 3 and the inner peripheral surface of the annular portion 15 in the guard portion 9 (see FIG. 6). ). Therefore, the heat released from the heat radiating unit 20 is also discharged from the gap 24 to the outside of the apparatus main body 2, and the temperature rise of the image pickup element 22 and the apparatus main body 2 is further suppressed, and the image pickup element 22 and the apparatus main body 2 are further reduced. A good operating state can be ensured.

In the above, the example in which the discharge holes 15b and 15b located on the left and right sides of the heat radiating part 20 are formed in the apparatus main body 2 is shown. However, the discharge holes 15b are formed at arbitrary positions around the heat radiating part 20. For example, it may be located above or below the heat dissipating part 20.

[Summary]
As described above, in the imaging device 1, the heat dissipating part 20 that releases heat generated when the image sensor 22 is driven is located behind the front surface 15 c of the apparatus main body 2, and the heat dissipating part 20 is disposed on the apparatus main body 2. A guard portion 9 is provided to cover at least a part thereof.

Therefore, since the guard portion 9 having a simple structure prevents the finger from coming into contact with the heat radiating portion 20 that may become high in temperature, the user can handle the imaging device 1 in a safe state. The user's safety can be improved while ensuring simplification.

Further, since the guard portion 9 is formed with an insertion hole 15a through which the element block 3 is inserted when the element block 3 is attached to and detached from the apparatus main body 2, the element block 3 is inserted into the insertion hole 15a and is attached to and detached from the apparatus main body 2. Is done. Accordingly, the guard portion 9 functions as a protection portion that protects the element block 3 and also functions as a guide portion that guides the element block 3, and functionality can be improved with a simple configuration.

Furthermore, the element block 3 is provided with a holder portion 17 for holding the image pickup device 22 therein, and the outer shape becomes smaller as the heat radiating portion 20 is separated from the holder portion 17.

Accordingly, since the size of the outer shape of the heat radiating unit 20 is changed, it is difficult for a finger to come into contact with the heat radiating unit 20 when the element block 3 is gripped. The safety of the person can be improved.

[Others]
Although the example of the heat radiating part 20 exposed on the surface of the element block 3 has been described above, for example, as shown in FIG. 9, it is possible to provide a heat radiating part 20X located inside the cover part 30. is there. The cover part 30 is located outside the heat radiating part 20 </ b> X, and the heat radiating part 20 </ b> X is located inside the cover part 30 in a non-contact state with the cover part 30.

As described above, the cover part 30 is positioned outside the heat dissipation part 20X in a non-contact state with the heat dissipation part 20X, so that heat released from the heat dissipation part 20X is not easily transmitted to the cover part 30, and It is difficult to feel the heat when touching, and it is possible to ensure good heat dissipation while ensuring the safety of the user during handling of the imaging device 1 such as the attaching / detaching operation of the element block 3.

[Modification of heat dissipation part]
Below, each modification of a thermal radiation part is demonstrated (refer FIG. 10 thru | or FIG. 14).

As shown in FIG. 10, the heat dissipating part 20 </ b> A according to the first modification includes an annular front coupling part 20 a, an annular rear coupling part 20 b, and between the front coupling part 20 a and the rear coupling part 20 b. Are integrally formed, and the

heat dissipating fins

20d, 20d,... Are inclined so as to displace to one side in the circumferential direction as they go backward. Yes.

In this way, the radiating

fins

20d, 20d,... Are inclined so as to be displaced in the circumferential direction, thereby increasing the length of the radiating

fins

20d, 20d,. In addition, since it is possible to increase the heat dissipation area, it is possible to improve the heat dissipation when the image sensor 22 is driven.

As shown in FIG. 11, the heat dissipating part 20B according to the second modification includes annular

heat dissipating fins

20e, 20e,... And heat dissipating

fins

20e, 20e,. It consists of connecting

parts

20f, 20f,... To be connected, and the diameter of the

heat radiation fins

20e, 20e,.

Since the

annular radiating fins

20e, 20e,... Are provided in this way, it is possible to increase the heat radiating area while ensuring a good air flow state. The heat dissipation in can be improved.

As shown in FIG. 12, the heat dissipating part 20C according to the third modification has an annular and plate-shaped heat dissipating fin 20g having a wide width in the front-rear direction. Between the heat radiating fins 20g,

gaps

31 and 31 are formed between the holder portion 17 and the detachable portion 18, respectively, in which air flows.

By providing the annular heat dissipating fins 20g having a wide width in the front-rear direction in this way, it is possible to ensure good heat dissipation during driving of the image sensor 22 with a simple structure.

In the heat radiating portion 20C according to the third modification, a plurality of annular radiating fins separated in the front-rear direction can be used instead of the single radiating fin 20g having a wide width in the front-rear direction. It is.

As shown in FIG. 13, the heat dissipating part 20D according to the fourth modification includes an annular front coupling part 20a, an annular rear coupling part 20b, and between the front coupling part 20a and the rear coupling part 20b. And a grid-like heat radiation fin 20h provided integrally with each other.

By providing the lattice-shaped heat radiation fins 20h in this manner, it is possible to increase the heat radiation area while ensuring a good flow state of air, so that the heat radiation performance at the time of driving the image sensor 22 can be improved. You can plan.

As shown in FIG. 14, the heat dissipating part 20E according to the fifth modification includes an annular front coupling part 20a, an annular rear coupling part 20b, and between the front coupling part 20a and the rear coupling part 20b. And a net-like heat dissipating fin 20i provided integrally with each other.

By providing the net-like heat radiation fins 20i in this way, it is possible to increase the heat radiation area while ensuring a good flow state of air, so that the heat radiation performance at the time of driving the image sensor 22 can be improved. Can be planned.

In addition, all the above-mentioned

heat radiating parts

20, 20X, 20A, 20B, 20C, 20D, 20E are located on the outer peripheral side of the detachable part 18, and the

heat radiating parts

20, 20X, 20A, 20B, 20C, 20D, 20E It is desirable that a space exists between the back surface and the surface of the detachable portion 18.

Since there is a space between the back surface of the

heat dissipating part

20, 20X, 20A, 20B, 20C, 20D, 20E and the surface of the detachable part 18, the

heat dissipating part

20, 20X, 20A, 20B, 20C, 20D, The back surface of 20E also functions as a heat radiating surface, and the air fluidity is increased, so that the heat radiating property can be further improved.

[Another configuration example of the imaging apparatus]
Hereinafter, another configuration example of the imaging apparatus will be described.

An image pickup apparatus 1A, which is a first configuration example, includes an apparatus body 2A and an element block 3 (see FIG. 15). The imaging device 1A may be configured to include the interchangeable lens 4 in addition to the device main body 2A and the element block 3. In this case, the interchangeable lens 4 may be detachable from the element block 3. Further, in the imaging apparatus 1A, the element block 3 may be integrally formed with the apparatus main body 2A. In this case, the holder unit 17, the imaging unit 19, and the heat radiating unit 20 which are each part of the element block 3 are included in the apparatus main body 2A. Part of the configuration.

The apparatus main body 2A has a housing 5A and

various operation units

6, 6,... Arranged in each part of the housing 5A.

The housing 5A has an annular guard portion 9A and a hold portion 11A continuous to the right end of the guard portion 9A.

The space inside the guard portion 9A is formed as a circular insertion hole 15a. A mounting portion 10a is provided in the housing 5A at a position directly behind the insertion hole 15a. In the housing 5A, a space penetrating in the vertical direction is formed on the rear side of the insertion hole 15a, and these spaces serve as discharge holes 15b and 15b.

In the state where the element block 3 is attached to the apparatus main body 2A, the heat dissipating part 20 is located behind the front surface 15c of the guard part 9A, and the discharge holes 15b and 15b are located above and below the heat dissipating part 20, respectively. In the state where the element block 3 is attached to the apparatus main body 2A, at least a part of the holder portion 17 of the element block 3 protrudes forward from the guard portion 9A.

In the imaging apparatus 1A configured as described above, the heat generated when the imaging element 22 is driven and released from the heat radiating unit 20 is mainly from the discharge holes 15b and 15b formed in the apparatus body 2A. It is discharged outside.

As described above, since the apparatus body 2A is formed with the discharge holes 15b and 15b for discharging the heat released from the heat radiating section 20, the heat released from the heat radiating section 20 is transferred from the discharge holes 15b and 15b to the apparatus main body 2A. It is reliably discharged outside. Therefore, heat is not easily transmitted to the apparatus main body 2A, and the apparatus main body 2A does not reach a high temperature, and the temperature rise of the image pickup element 22 and the apparatus main body 2A is suppressed, and a good operating state of the image pickup element 22 and the apparatus main body 2A is ensured. can do.

Further, since the apparatus main body 2A is formed with

discharge holes

15b and 15b positioned on the opposite side across the element block 3, the heat released from the heat radiating portion 20 is transmitted from both sides of the element block 3 to the apparatus main body 2A. It is discharged to the outside, and the temperature rise of the image sensor 22 and the apparatus main body 2A is further suppressed, and a more favorable operation state of the image sensor 22 and the apparatus main body 2A can be secured.

In particular, although the heat generated from the heat radiating part 20 is easily moved upward, as described above, the one discharge hole 15b is located above the heat radiating part 20, so that the heat released from the heat radiating part 20 is reduced. Good discharge performance can be ensured.

The imaging apparatus 1B as the second configuration example is configured by the apparatus main body 2B and the element block 3 (see FIG. 16). Note that the imaging apparatus 1B may include an interchangeable lens 4 in addition to the apparatus main body 2B and the element block 3. In this case, the interchangeable lens 4 may be detachable from the element block 3. Further, in the imaging apparatus 1B, the element block 3 may be integrally formed with the apparatus main body 2B. In this case, the holder unit 17, the imaging unit 19, and the heat radiating unit 20 which are each part of the element block 3 are included in the apparatus main body 2B. Part of the configuration.

The apparatus main body 2B has a housing 5B and

various operation units

6, 6,... Arranged in each part of the housing 5B.

The housing 5B has a guard portion 9B and a hold portion 11B provided in a state protruding from the guard portion 9B.

The housing 5B is formed with a circular insertion hole (not shown) through which the element block 3 is inserted, and discharge

holes

15b and 15b for discharging heat released from the heat radiation portion 20 of the element block 3B. The discharge holes 15b and 15b are penetrated to the left and right and are spaced apart to the left and right. In addition, the discharge hole 15b should just be formed in the arbitrary positions around the thermal radiation part 20, for example, may be located in at least one of the upper direction of the thermal radiation part 20, or the downward direction.

The adapter 32 can be attached to and detached from the apparatus main body 2B. The adapter 32 is provided with

various connection terminals

33, 33,. By connecting a predetermined connection cord to each of the

connection terminals

33, 33,..., Connection between the imaging device 1B and an external device such as a display device is possible via the adapter 32.

The viewfinder 34 can be attached to and detached from the adapter 32. The viewfinder 34 allows the user to reliably see the subject at the time of shooting. The imaging device 1B having such a viewfinder 34 is particularly preferably used as a video camera for moving image shooting.

Note that the adapter 32 is not necessarily attached and used at the time of shooting or the like. When the adapter 32 is not used, for example, the viewfinder 34 may be detachable from the apparatus main body 2B.

In a state where the element block 3 is attached to the apparatus main body 2B, the heat radiating portion 20 is located behind the front surface 15c of the guard portion 9B, and the discharge holes 15b and 15b are located on the left and right sides of the heat radiating portion 20, respectively. When the element block 3 is attached to the apparatus main body 2B, at least a part of the holder portion 17 of the element block 3 protrudes forward from the guard portion 9B.

In the imaging apparatus 1B configured as described above, heat generated when the imaging element 22 is driven and released from the heat radiating unit 20 is mainly from the discharge holes 15b and 15b formed in the apparatus body 2B. It is discharged outside.

Thus, since the apparatus main body 2B is formed with the discharge holes 15b and 15b for discharging the heat released from the heat radiating portion 20, the heat released from the heat radiating section 20 is discharged from the discharge holes 15b and 15b to the apparatus main body 2B. It is reliably discharged outside. Therefore, heat is not easily transmitted to the apparatus main body 2B, and the apparatus main body 2B does not reach a high temperature, and the temperature rises of the image pickup element 22 and the apparatus main body 2B are suppressed, and a favorable operating state of the image pickup element 22 and the apparatus main body 2B is ensured. can do.

Further, since the apparatus main body 2B is formed with

discharge holes

15b and 15b positioned on the opposite side across the element block 3, the heat released from the heat radiating portion 20 is generated from both sides of the element block 3 on the apparatus main body 2B. It is discharged to the outside, and the temperature rises of the image sensor 22 and the apparatus main body 2B are further suppressed, and a better operating state of the image sensor 22 and the apparatus main body 2B can be secured.

[One Embodiment of Imaging Device]
FIG. 17 shows a block diagram of an embodiment of the imaging device of the present technology.

The imaging device 1 has, for example, a device main body 2 and an element block 3, and the interchangeable lens 4 is attached to the element block 3 for use.

The apparatus main body 2 includes a camera signal processing unit 51 that performs predetermined signal processing and an image processing unit 52 that performs recording and reproduction processing of image signals. In addition, the apparatus main body 2 includes a display unit 53 (display 12) that displays captured images and the like, an R / W (reader / writer) 54 that writes and reads image signals to and from the memory 60, and an imaging apparatus. A central processing unit (CPU) 55 that controls the entire system 1, an operation unit 56 (operation unit 6) such as various switches that are operated by a user, and a lens group 26 provided in the interchangeable lens 4. And a lens drive control unit 57 that controls driving.

The camera signal processing unit 51 performs various signal processing such as noise removal, image quality correction, and conversion to luminance / color difference signals on the output signal from the image sensor 22.

The image processing unit 52 performs compression encoding / decompression decoding processing of an image signal based on a predetermined image data format, conversion processing of data specifications such as resolution, and the like.

The display unit 53 has a function of displaying various data such as an operation state of the user operation unit 56 and a photographed image.

The R / W 54 writes the image data encoded by the image processing unit 52 into the memory 60 and reads out the image data recorded in the memory 60.

The CPU 55 functions as a control processing unit that controls each unit of the imaging apparatus 1 and controls each unit based on an instruction input signal or the like from the operation unit 56.

The operation unit 56 outputs an instruction input signal corresponding to the operation by the user to the CPU 55.

The lens drive control unit 57 controls a drive source that drives each lens of the lens group 26 based on a control signal from the CPU 55.

The memory 60 is a semiconductor memory that can be attached to and detached from a slot connected to the R / W 54, for example.

Hereinafter, the operation of the imaging apparatus 1 will be described.

In the shooting standby state, the captured image signal is output to the display unit 53 via the camera signal processing unit 51 and displayed as a camera-through image under the control of the CPU 55. When an instruction input signal for zooming is input from the operation unit 56, the CPU 55 outputs a control signal to the lens drive control unit 57, and a predetermined lens group 26 is controlled based on the control of the lens drive control unit 57. The lens is moved.

When photographing is started by an instruction input signal from the operation unit 56, the photographed image signal is output from the camera signal processing unit 51 to the image processing unit 52, subjected to compression coding processing, and converted into digital data of a predetermined data format. Converted. The converted data is output to the R / W 54 and written to the memory 60.

Focusing is performed when the lens drive control unit 57 moves a predetermined lens of the lens group 26 based on a control signal from the CPU 55.

When the image data recorded in the memory 60 is reproduced, predetermined image data is read from the memory 60 by the R / W 54 in accordance with an operation on the operation unit 56, and decompression decoding processing is performed by the image processing unit 52. After being performed, the reproduced image signal is output to the display unit 53 to display the reproduced image.

[Technology]
The present technology may be configured as follows.

(1)
It has a device main body with an operation unit,
When the end surface on the subject side at the time of shooting of the apparatus body is the front surface,
A heat dissipating part that releases heat generated when the image sensor is driven is positioned behind the front surface of the apparatus body;
An imaging apparatus, wherein a guard portion that covers at least a part of the heat radiating portion is provided in the apparatus main body.

(2)
An element block having the heat radiating portion and the imaging element is provided,
The imaging device according to (1), wherein the element block is detachable from the apparatus main body.

(3)
The imaging device according to (2), wherein the guard portion has an insertion hole through which the element block is inserted when the element block is attached or detached.

(4)
In a state where the element block is attached to the apparatus main body, at least a part of the element block is inserted into the insertion hole,
The imaging device according to (3), wherein a gap is formed between an inner peripheral surface of the guard part and an outer peripheral surface of the element block.

(5)
The imaging apparatus according to any one of (2) to (4), wherein a discharge hole for discharging heat released from the heat radiating unit to the outside is formed in the apparatus main body.

(6)
A plurality of the discharge holes are formed in the apparatus body,
The imaging device according to (5), wherein the discharge hole is positioned on the opposite side at least across the element block.

(7)
The element block is provided with a holder portion for holding the image sensor inside,
The imaging device according to any one of (2) to (6), wherein an outer shape is reduced as the heat dissipation unit is separated from the holder unit.

(8)
The heat radiating part is formed in an annular shape,
The imaging device according to any one of (2) to (7), wherein a radiation fin is provided on the entire circumferential direction of the radiation unit.

(9)
A cover for covering the heat dissipation part is provided outside the heat dissipation part,
The imaging device according to any one of (2) to (8), wherein the heat dissipating part and the covering part are positioned in a non-contact state.

(10)
The imaging device according to any one of (2) to (9), wherein an interchangeable lens is detachably attached to the element block.

(11)
An apparatus body in which an operation unit is arranged;
An element block having an image sensor and a heat radiating part that releases heat generated when the image sensor is driven;
When the end surface on the subject side at the time of shooting of the apparatus body is the front surface,
The heat dissipating part is located on the rear side of the front surface of the apparatus body;
An imaging apparatus, wherein a guard portion that covers at least a part of the heat radiating portion is provided in the apparatus main body.

(12)
The imaging device according to (11), wherein the element block is detachable from the apparatus main body.

(13)
The imaging device according to (11) or (12), wherein the guard portion is formed with an insertion hole through which the element block is inserted when the element block is attached or detached.

(14)
In a state where the element block is attached to the apparatus main body, at least a part of the element block is inserted into the insertion hole,
The imaging device according to (13), wherein a gap is formed between an inner peripheral surface of the guard part and an outer peripheral surface of the element block.

(15)
The imaging apparatus according to any one of (11) to (14), wherein a discharge hole for discharging heat released from the heat radiating unit to the outside is formed in the apparatus main body.

(16)
A plurality of the discharge holes are formed in the apparatus body,
The imaging device according to (15), wherein the discharge hole is positioned on the opposite side at least with the element block interposed therebetween.

(17)
The element block is provided with a holder portion for holding the image sensor inside,
The imaging device according to any one of (11) to (16), wherein an outer shape is reduced as the heat radiating portion is separated from the holder portion.

(18)
The heat radiating part is formed in an annular shape,
The imaging device according to any one of (11) to (17), wherein a heat radiating fin is provided in the entire circumferential direction of the heat radiating portion.

(19)
A cover for covering the heat dissipation part is provided outside the heat dissipation part,
The imaging device according to any one of (11) to (18), wherein the heat dissipating part and the covering part are positioned in a non-contact state.

(20)
The imaging device according to any one of (11) to (19), wherein an interchangeable lens is detachable from the element block.

(21)
It can be attached to and detached from the main body where the operation unit is located.
An element block comprising: an imaging element; a holder part that holds the imaging element; and a heat dissipation part that releases heat generated when the imaging element is driven.

(22)
Provided integrally with the device body where the operation unit is located,
An element block comprising: an imaging element; a holder part that holds the imaging element; and a heat dissipation part that releases heat generated when the imaging element is driven.

DESCRIPTION OF SYMBOLS 1 ... Imaging device, 2 ... Apparatus main body, 3 ... Element block, 4 ... Interchangeable lens, 6 ... Operation part, 9 ... Guard part, 15a ... Insertion hole, 15b ... Discharge hole, 15c ... Front surface, 17 ... Holder part, 19 DESCRIPTION OF SYMBOLS ... Imaging unit, 20 ... Radiation part, 20c ... Radiation fin, 22 ... Imaging element, 24 ... Gap, 20X ... Radiation part, 30 ... Cover part, 20A ... Radiation part, 20d ... Radiation fin, 20B ... Radiation part, 20e ... Radiation fin, 20C ... radiation part, 20g ... radiation fin, 20D ... radiation part, 20h ... radiation fin, 20E ... radiation part, 20i ... radiation fin, 1A ... imaging device, 2A ... device body, 9A ... guard part, 1B ... Imaging device, 2B ... device main body, 9B ... guard unit, 56 ... operation unit

Claims

It has a device main body with an operation unit,
When the end surface on the subject side at the time of shooting of the apparatus body is the front surface,
A heat dissipating part that releases heat generated when the image sensor is driven is positioned behind the front surface of the apparatus body;
An image pickup apparatus, wherein a guard part that covers at least a part of the heat radiating part is provided in the apparatus main body.
An element block having the heat radiating portion and the imaging element is provided,
The imaging device according to claim 1, wherein the element block is detachable from the apparatus main body.
The imaging device according to claim 2, wherein an insertion hole through which the element block is inserted when the element block is attached or detached is formed in the guard portion.
In a state where the element block is attached to the apparatus main body, at least a part of the element block is inserted into the insertion hole,
The imaging device according to claim 3, wherein a gap is formed between an inner peripheral surface of the guard part and an outer peripheral surface of the element block.
The imaging apparatus according to claim 1, wherein a discharge hole for discharging heat released from the heat radiating unit to the outside is formed in the apparatus main body.
A plurality of the discharge holes are formed in the apparatus body,
The imaging device according to claim 5, wherein the discharge hole is positioned on the opposite side with at least the element block interposed therebetween.
The element block is provided with a holder portion for holding the image sensor inside,
The imaging device according to claim 2, wherein the outer shape of the heat radiating portion is reduced as the distance from the holder portion decreases.
The heat radiating part is formed in an annular shape,
The imaging device according to claim 1, wherein a heat radiating fin is provided over the entire circumferential direction of the heat radiating portion.
A cover for covering the heat dissipation part is provided outside the heat dissipation part,
The imaging device according to claim 1, wherein the heat dissipating part and the covering part are positioned in a non-contact state.
The imaging device according to claim 2, wherein an interchangeable lens is detachable from the element block.
An apparatus body in which an operation unit is arranged;
An element block having an image sensor and a heat radiating part that releases heat generated when the image sensor is driven;
When the end surface on the subject side at the time of shooting of the apparatus body is the front surface,
The heat dissipating part is located on the rear side of the front surface of the apparatus body;
An imaging apparatus, wherein a guard portion that covers at least a part of the heat radiating portion is provided in the apparatus main body.
The imaging device according to claim 11, wherein the element block is detachable from the apparatus main body.
The imaging device according to claim 11, wherein an insertion hole through which the element block is inserted when the element block is attached or detached is formed in the guard portion.
In a state where the element block is attached to the apparatus main body, at least a part of the element block is inserted into the insertion hole,
The imaging device according to claim 13, wherein a gap is formed between an inner peripheral surface of the guard portion and an outer peripheral surface of the element block.
The imaging apparatus according to claim 11, wherein a discharge hole for discharging heat released from the heat radiating unit to the outside is formed in the apparatus main body.
A plurality of the discharge holes are formed in the apparatus body,
The imaging device according to claim 15, wherein the discharge hole is positioned on the opposite side with at least the element block interposed therebetween.
The element block is provided with a holder portion for holding the image sensor inside,
The imaging device according to claim 11, wherein the outer shape of the heat radiating part is reduced as the distance from the holder part decreases.
The heat radiating part is formed in an annular shape,
The imaging device according to claim 11, wherein a heat radiating fin is provided over the entire circumferential direction of the heat radiating portion.
A cover for covering the heat dissipation part is provided outside the heat dissipation part,
The imaging device according to claim 11, wherein the heat dissipating part and the covering part are positioned in a non-contact state.
The imaging device according to claim 11, wherein an interchangeable lens is detachable from the element block.