Imaging device

Abstract

To provide an imaging apparatus capable of satisfying heat radiation performance, without inhibiting the movement of an imaging element.SOLUTION: An imaging apparatus 100 includes an imaging element part 106 which includes an imaging element 115, a movable part 114 for supporting the imaging element, and a driving mechanism 113 for moving the movable part in a direction including a direction orthogonal to an optical axis direction and air blowing means 130. The air blowing means is arranged outside the movable area range of the movable part, when viewed from the optical axis direction and the driving mechanism is not arranged between the air blowing means and the movable part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an imaging device having a heat dissipation structure for heat generated from a heat source. [Background technology]

[0002] In recent years, along with the demand for miniaturization of imaging devices, the miniaturization and high density of components mounted inside imaging devices have become significant. At the same time, there has been an ever-increasing demand for high performance imaging devices, particularly for video recording, and the amount of heat generated by imaging devices is on the rise. The rise in temperature inside an imaging device during video recording in a high-temperature environment is likely to cause malfunctions and performance degradation of the mounted components, and ultimately failure of the imaging device.

[0003] In recent years, imaging devices that correct shake by moving the image sensor in a direction perpendicular to the optical axis have become popular in order to improve image quality. Even in imaging devices that perform shake correction, sufficient heat dissipation is required because heat generated in the image sensor when the shake correction mechanism is operating, during continuous shooting, and during video shooting affects image quality.

[0004] Therefore, when the amount of heat dissipated by natural heat dissipation is insufficient for the amount of heat generated by the imaging device, a heat dissipation structure that uses forced air cooling using a heat conductive member is used.

[0005] Patent Document 1 discloses an optical unit that cools an imaging element by connecting a heat conductive member to the movable imaging element. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2020-30393 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the optical unit disclosed in Patent Document 1, the heat conducting member is physically connected to the movable imaging element, which causes a problem of impeding the operation of the imaging element.

[0008] The present invention provides an imaging device that satisfies heat dissipation requirements without impeding the movement of the imaging element. [Means for solving the problem]

[0009] An imaging device according to one aspect of the present invention includes an imaging element unit including an imaging element, a movable part supporting the imaging element, and a drive mechanism for moving the movable part in directions including a direction perpendicular to an optical axis direction, and a blower, the blower being disposed outside a movable range of the movable part as viewed from the optical axis direction, the air discharged from the exhaust port of the air blowing means passes over the back surface of the imaging element; The drive mechanism includes: On the air flow path from the exhaust port to the rear surface It is located in When viewed from the optical axis direction, the airflow path from the exhaust port to the rear surface overlaps with the diagonal line of the imaging element in projection. It is characterized by:

[0010] Other objects and features of the present invention will be described in the following embodiments. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide an imaging device that can satisfy heat dissipation performance without interfering with the movement of the imaging element. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 2 is an exploded rear perspective view of the digital camera 100 according to the present embodiment. [Figure 2] FIG. 2 is an exploded front perspective view of an image sensor unit 106 according to the present embodiment. [Figure 3] FIG. 2 is an exploded rear perspective view of an image sensor unit 106 according to the present embodiment. [Figure 4] FIG. 2 is a rear view of the image pickup element unit 106 and the heat dissipation fan 130 according to the present embodiment. [Figure 5] FIG. 2 is a schematic diagram of a rear view of the image pickup element unit 106 and the heat dissipation fan 130 according to the present embodiment. [Figure 6]FIG. 10 is a schematic diagram of a rear view of the image pickup element unit 106 and heat dissipation fans 130a and 130b according to a modified example of the present embodiment. [Figure 7] 1 is a block diagram of a digital camera 100 according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The dimensions, materials, shapes, and relative arrangements of the components described below may be changed as appropriate depending on the configuration of the device to which the invention is applied and various conditions. Therefore, the scope of the present invention is not limited to the following description. Well-known or publicly known techniques in the relevant technical field may be applied to configurations and processes not specifically shown or described. Furthermore, duplicated descriptions may be omitted. The same reference symbols are used in the drawings to indicate identical or functionally similar elements.

[0014] 1 is an exploded perspective view of the rear of a digital camera 100, which is an imaging device according to this embodiment. As shown in FIG. 1, the digital camera 100 is made up of a mount 102a, a rear cover 101, a front base 102, a top cover 103, a bottom cover 104, and a side cover 105.

[0015] Inside digital camera 100 are arranged image sensor section 106 with a shake correction mechanism, main board 107, shutter 108, viewfinder 109, and chassis 110. Image sensor section 106 is made up of movable section 114 that supports image sensor 115, and fixed section 113 that is a drive mechanism for driving movable section 114.

[0016] The image sensor unit 106 is disposed perpendicular to the optical axis OA, and the image sensor 115 is also disposed perpendicular to the optical axis OA. Here, "perpendicular to the optical axis" does not only mean perpendicular to the optical axis in the strict sense, but also includes the case of being approximately perpendicular to the optical axis. Hereinafter, when the term "perpendicular" is simply used, it is interpreted as including "approximately perpendicular."

[0017] The front base 102 is made of, for example, magnesium die-cast or resin, and includes a mount 102a onto which an interchangeable lens can be attached. The main board 107 is a multi-layer board with electronic components mounted on both sides. The main board 107 is fixed to the front base 102 and a metal chassis 110 with screws. The main board 107 is equipped with a control IC 107a that controls imaging signals, etc., a recording medium connector 107b that accommodates an external recording medium, and an external communication terminal 107c for connecting a cable to an external device. The external communication terminal 107c is covered with a terminal cover 105a.

[0018] Among the components of the digital camera 100, the image sensor unit 106 consumes particularly large amounts of power and generates a large amount of heat. For this reason, the image sensor unit 106 is a component that experiences rapid temperature increases. The shooting time of the digital camera 100 is limited by the guaranteed operating temperatures of each component. In order to maintain the longest possible shooting time, it is necessary to take measures to dissipate heat from the image sensor unit 106, which is a heat source, so that the guaranteed operating temperatures are not exceeded. The image sensor unit 106 is fixed to the front base 102 with screws, and is configured to dissipate heat from the image sensor unit 106 to the front base 102.

[0019] The heat dissipation fan 130 is disposed around the image sensor unit 106 so that its airflow direction is perpendicular to the optical axis OA, and the air passes directly over the back surface of the image sensor unit 106, which is a heat source. This prevents the image sensor unit 106 from becoming locally hot (details will be described later). In this embodiment, a centrifugal fan is used as the airflow means for the heat dissipation fan 130, but an axial fan, for example, may be used as long as the purpose can be achieved. In this embodiment, the heat dissipation fan 130 is disposed so that its airflow direction is perpendicular to the optical axis OA. However, this is not the case as long as the airflow from the heat dissipation fan 130 directly hits the image sensor unit 106, and the fan may be disposed so that its airflow direction is not perpendicular to the optical axis OA.

[0020] The image sensor unit 106 will be described in detail with reference to Figures 2 and 3. Figure 2 is an exploded perspective view of the front of the image sensor unit 106, and Figure 3 is an exploded perspective view of the rear of the image sensor unit 106.

[0021] The imaging element unit 106 is composed of a movable unit 114 and a fixed unit 113, which is a drive mechanism. The fixed unit 113 can perform blur correction by moving the movable unit 114 in a direction perpendicular to the optical axis direction. The movable unit 114 may also be moved in a direction including a direction perpendicular to the optical axis direction. The movable unit 114 is provided with a coil unit 116 in which a coil and a Hall element are arranged for moving the imaging element 115. The imaging element 115 is held by a sensor holder 117 of the movable unit 114. Three magnets 118 are held on the drive mechanism 113 side, and the movable unit 114 is attracted and held by the magnets 118. A ball (not shown) is placed in a ball holding unit 117a provided on the sensor holder 117 between the movable unit 114 and the drive mechanism 113. The movable unit 114 can be moved by changing the amount of current flowing through the coil unit 116. Blur correction (image stabilization) can be performed by moving movable part 114 in a direction that cancels out blurring of the body of digital camera 100. Note that coil part 116, magnet 118, etc., which are necessary for driving movable part 114, are considered to be part of drive mechanism 113.

[0022] The imaging element 115 has a sensor chip (not shown) attached to an imaging substrate 115a on which an imaging circuit is mounted, and is electrically connected to the imaging substrate 115 by wire bonding. The imaging element 115 and sensor holder 117 are fixed with adhesive. On the back side of the surface of the imaging substrate 115a where the sensor chip is attached, elements 115b such as capacitors, resistors, and regulators of the imaging circuit are mounted.

[0023] The imaging element unit 106 and the main board 107 are electrically connected using a flexible wiring board. Imaging signals output from the imaging element 115 and control signals required to drive the imaging element 115 are transmitted to the control IC 107a on the main board 107 via an imaging signal flexible cable 111. An imaging power supply flexible cable 112 is a flexible cable that supplies power to drive the imaging element 115. Inter-board connectors are used to connect the imaging board 115a to each flexible cable.

[0024] 4 and 5 are a diagram and a schematic diagram of the heat dissipation fan 130 and the image pickup element unit 106 as seen from behind in the optical axis direction, respectively.

[0025] Here, the movement of movable part 114 of imaging element unit 106 and the positional relationship between heat dissipation fan 130 will be described. Movable part 114 is movable perpendicular to optical axis OA, and the range of movement of movable part 114 is shown as range 114a in Figure 5. Furthermore, range 114b shows the range within which diagonal line 114c of movable part 114 (or the diagonal line of imaging element 115) always exists when movable part 114 moves. This range 114b is the range within which diagonal line 114c of movable part 114 exists regardless of the position within range 114a within which movable part 114 moves.

[0026] Next, the arrangement of the heat dissipation fan 130 will be described. As described above, the heat dissipation fan 130 is arranged outside the movable range 114a of the movable part 114 when viewed from the optical axis direction so that the air discharged from the exhaust port 131 of the heat dissipation fan 130 passes over the back surface of the image sensor unit 106. Furthermore, in order to pass the air over the range 114b where the diagonal line 114c of the movable part 114 always exists when the movable part 114 moves, the heat dissipation fan 130 is arranged so that the direction in which the exhaust port 131 faces is within the range 114b. In other words, the heat dissipation fan 130 is arranged so that the diagonal line 114c extending in the direction in which the exhaust port 131 faces exists no matter where the movable part 114 moves to. Here, the air blowing direction of the heat dissipation fan 130 is roughly indicated by 131a. By keeping the airflow direction 131a within the range 114b, the air can pass through the diagonal line 114c, which has the longest airflow distance, no matter where the movable part 114, which is the heat source of the image sensor part 106, moves to. This allows for a higher heat dissipation effect.

[0027] It is preferable that the heat dissipation fan 130 and the imaging element 115 are disposed at approximately the same position in the optical axis direction. This allows the air to also blow against the sides of the imaging element 115, making it possible to suppress a rise in temperature of the imaging element 115. It is more preferable that the heat dissipation fan 130 and the imaging element 115 are disposed at approximately the same position in the optical axis direction.

[0028] Furthermore, the heat dissipation fan 130 is positioned so that components such as the coil section 116 and the magnet 118 required to drive the movable section 114 are not positioned in the airflow path of the heat dissipation fan 130. In other words, the drive mechanism 113 is not positioned between the heat dissipation fan 130 and the movable section 114. This does not block the airflow of the heat dissipation fan 130. By not placing components such as the coil section 116 and the magnet 118 required to drive the movable section 114, or any other components that block the airflow, between the diagonal line 114c of the heat dissipation fan 130 and the movable section 114, a higher heat dissipation effect can be achieved.

[0029] Furthermore, in this embodiment, the heat conduction member for heat dissipation is not physically connected to the movable part 114, so the heat dissipation effect can be achieved without impeding the image stabilization function due to the movement of the movable part 114.

[0030] In this embodiment, for example, the heat dissipation fan 130 is operating at a wind speed of 4.5 L / min. Liters per minute (L / min) is a unit of volumetric flow rate. By incorporating the heat dissipation fan 130 into the digital camera 100, it is possible to reduce the maximum temperature that the image sensor unit 106 can reach by 10°C. This suppresses the temperature rise of the heat source, making it less likely that the digital camera 100 will reach a temperature limit at which it will stop functioning due to heat generation.

[0031] FIG. 6 is a schematic rear view of the image sensor unit 106 and multiple heat dissipation fans 130a and 130b according to a modified example of this embodiment. While the heat dissipation effect was achieved using a single heat dissipation fan 130 in the above-described embodiment, multiple heat dissipation fans 130a and 130b may be used. By using multiple heat dissipation fans 130a and 130b to blow air toward the heat source, the heat dissipation effect toward the heat source can be further enhanced. For example, as shown in FIG. 6, two heat dissipation fans, a first air blowing unit 130a and a second air blowing unit 130b, are arranged. Specifically, the first air blowing unit 130a is arranged so that the air blowing direction 131a1 of the first air blowing unit 130a is parallel to one diagonal line 114c1 of the movable unit 114 when viewed from the optical axis direction. The second air blowing unit 130b is disposed so that the air blowing direction 131b1 of the second air blowing unit 130b is parallel to the other diagonal line 114c2 of the movable unit 114 when viewed from the optical axis direction. Here, "parallel to the diagonal line" refers not only to the strict meaning of "parallel to the diagonal line" but also to the meaning of "approximately parallel to the diagonal line." When the air blowing direction 131b1 is within the range 114b1, the air can pass through the diagonal line 114c1, which has the longest air blowing distance, regardless of the position of the movable unit 114, which is a heat source of the image sensor unit 106. Furthermore, when the air blowing direction 131b1 is within the range 114b2, the air can pass through the diagonal line 114c2, which has the longest air blowing distance, regardless of the position of the movable unit 114, which is a heat source of the image sensor unit 106. This allows for a higher heat dissipation effect.

[0032] FIG. 7 is a block diagram showing an example of the configuration of a digital camera 100 according to this embodiment.

[0033] The shutter 410 is a focal plane shutter that can freely control the exposure time of the imaging unit 411, which will be described later. This control is performed by a system control unit 420, which will be described later. The imaging unit 411 is an imaging device that has an imaging surface on which an object image (optical image) that has passed through the lens 501 is formed, and outputs an electrical signal (analog signal) corresponding to the optical image on the imaging surface through photoelectric conversion. A CCD (Charge Couple Device) or a CMOS (Complementary MOS) sensor is used as the imaging unit 411.

[0034] The A / D converter 412 is a signal conversion means used to convert an analog signal output from the imaging unit 411 into a digital signal.

[0035] The image processing unit 413 is an image calculation means that performs predetermined pixel interpolation, resizing such as reduction, and color conversion processing on the digital signal from the A / D converter 412 or a digital signal from a memory control unit 422 (described later) to generate image data. Based on the calculation results obtained by the image processing unit 413, the system control unit 420 controls the aperture position and lens position. The image processing unit 413 further performs calculation processing using the image data, and performs TTL-type AWB (auto white balance) processing based on the obtained calculation results.

[0036] The system control unit 420 is a control unit made up of at least one processor or circuit, and controls the entire digital camera 400. The system control unit 420 realizes various processes by executing programs recorded in a nonvolatile memory 423, which will be described later.

[0037] The memory 421 is a storage means for temporarily recording digital signals obtained by the imaging unit 411 and converted by the A / D converter 412, and image data generated by the image processing unit 413. The memory 421 has a storage capacity sufficient to store a predetermined number of still images and a predetermined period of moving images and audio.

[0038] The memory control unit 422 is a memory control means that controls the transmission and reception of data controlled by the system control unit 420 to and from the A / D converter 412 , the image processing unit 413 , and the memory 421 .

[0039] The digital signal output from the A / D converter 412 is written directly into the memory 421 via the image processing unit 413 and the memory control unit 422, or via the memory control unit 422 only.

[0040] The nonvolatile memory 423 is a read-only storage means that can be electrically erased and recorded, and stores constants, programs, etc. for the operation of the system control unit 420. The system memory 424 is a readable and writable storage means that stores constants, variables, programs read from the nonvolatile memory 423, etc. for the operation of the system control unit 420.

[0041] The system timer 425 is a timing unit that measures the time until an auto power-off function that turns off various display members (described later) is executed, and the exposure time.

[0042] The auto power off function has the function of turning off various display members (described later) to prevent battery consumption when it is determined that the photographer is not operating the digital camera 100.

[0043] The power supply unit 430 is made up of a primary battery such as an alkaline battery or a lithium battery, a secondary battery such as an NiCd battery, an NiMH battery, or a Li battery, an AC adapter, or the like.

[0044] The power supply control unit 431 is composed of a circuit for detecting the power supply unit 430 that serves as the power source for driving the digital camera 100, a DC-DC converter, a switch circuit for switching the power supply destination, etc. The power supply control unit 431 detects whether a battery is installed, the type of battery, and the remaining battery power. The power supply control unit 431 also controls the DC-DC converter based on the above detection results and instructions from the system control unit 420, and supplies the required voltage to the supply destination at the required timing.

[0045] The communication terminal 440 is provided in the digital camera 100 and is electrically connected to a lens communication terminal 506, which will be described later. By electrically connecting the communication terminal 440, the system control unit 420, which controls the entire digital camera 100, can communicate with the lens 500, which will be described later.

[0046] The recording medium I / F 441 is an interface with a recording medium 600, which will be described later.

[0047] The orientation detection unit 442 detects the orientation of the digital camera 100 with respect to the direction of gravity. Based on the orientation detected by the orientation detection unit 442, the system control unit 420 can output orientation information indicating whether the image captured by the imaging unit 411 was captured with the digital camera held horizontally or vertically. The system control unit 420 can add the orientation information output by the orientation detection unit 442 to the image data. An acceleration sensor, a gyro sensor, or the like can be used as the orientation detection unit 442. Using an acceleration sensor and a gyro sensor as the orientation detection unit 442 also makes it possible to detect the movement of the digital camera 100 (panning, tilting, lifting, whether the digital camera is stationary, etc.).

[0048] Eyepiece 443 is the part where the photographer's eye (object) 700 approaches (comes into contact with) digital camera 100.

[0049] The eye contact detection unit 444 is a proximity or eye contact detection sensor that detects the approach (eye contact) and removal (eye separation) of the eye 700 to the eye piece 443. The eye contact detection unit 444 detects the approach of the eye 700 to the eye piece 443 based on whether or not a light receiving unit (not shown) of the infrared proximity sensor receives light. After detecting the approach of the eye, the system control unit 420 determines that the eye is in the eye contact state until it detects the eye separation. After detecting the eye separation, the system control unit 420 determines that the eye is not in the eye contact state until it detects the eye separation. Note that the infrared proximity sensor is just an example, and other sensors may be used for the eye contact detection unit 444 as long as they can detect the approach of an eye or an object that can be considered to be in eye contact.

[0050] The memory 421 also serves as a memory for image display (video memory). Digital signals and image data written to the memory 421 are displayed on the rear display unit 450 and EVF 451 via the memory control unit 422.

[0051] The rear display unit 450 performs display in response to a signal from the memory control unit 422. The EVF 451 performs display in response to a signal from the memory control unit 422 when the eye proximity detection unit 444 detects eye proximity. An analog signal generated by the imaging unit 411 is converted into a digital signal by the A / D converter 412 and recorded in the memory 421. The memory control unit 422 sequentially transfers the digital signal recorded in the memory 421 to the rear display unit 450 or the EVF 451. This enables live view shooting display, which is a real-time display.

[0052] The system control unit 420 switches the rear display unit 450 and the EVF 451 between display (display state) and non-display (non-display state) depending on the state detected by the above-mentioned eyepiece detection unit 444. When the eyepiece is not in position, the system control unit 420 sets the rear display unit 450 to the display state and the EVF 451 to the non-display state. Furthermore, when the eyepiece is in position, the system control unit 420 sets the EVF 451 to the display state and the rear display unit 450 to the non-display state.

[0053] The operation unit 460 is a variety of operation members that serve as an input unit for accepting operations from the user. The operation unit 460 includes various operation members (a mode changeover switch 461, a shutter button 462, a first shutter switch 463, a second shutter switch 464, a touch panel 465, and a power switch 466) that will be described later. The operation unit 460 is also an operation means for inputting various operation instructions to the system control unit 420.

[0054] The mode changeover switch 461 switches the operation mode of the system control unit 420 between a still image shooting mode, a video shooting mode, etc. Shooting modes included in the still image shooting mode include an auto shooting mode, an auto scene determination mode, and a manual shooting mode. Shooting modes included in the still image shooting mode include an aperture priority mode (Av mode), a shutter speed priority mode (Tv mode), and a program AE mode (P mode). Similarly, the video shooting mode may include multiple shooting modes.

[0055] The shutter button 462 is a button that the photographer uses to issue a shooting preparation instruction and a shooting instruction. The first shutter switch 463 is turned on when the shutter button 462 provided on the digital camera 100 is pressed halfway (shooting preparation instruction) during operation, and generates a first shutter switch signal SW1. The signal SW1 starts shooting preparation operations such as AF (autofocus) processing, AE (auto exposure) processing, and AWB (auto white balance) processing.

[0056] The second shutter switch 464 is turned on when the shutter button 462 is fully pressed (photographing instruction) and generates a second shutter switch signal SW2. The system control unit 420 starts photographing processing operations based on the signal SW2, such as reading an analog signal from the imaging unit 411, signal conversion processing in the A / D converter 412 and image processing unit 413, and writing image data temporarily recorded in the memory 421 to the recording medium 600.

[0057] The touch panel 465 is a device that detects touch or drag operations by the photographer. Here, the touch panel 465 is integrated with the rear display unit 450, and operations can be performed by touching the display unit of the rear display unit 450 with a finger.

[0058] The power switch 466 is a switch that switches the power supply ON / OFF. The power supply control unit 431 controls the power supply from the power supply unit 430 by the switching operation of the power switch 466.

[0059] The heat dissipation fan 130 is controlled by the system control unit 420 and cools the heat source inside the digital camera 100 .

[0060] Lens unit 500 is an interchangeable lens that can be attached to and detached from digital camera 100. Lens 501 is a lens group for generating an optical image (subject image) from subject light reflected from a subject, and is made up of multiple lenses, but for simplicity, only one lens is shown in this diagram.

[0061] The lens communication terminal 506 is a communication terminal that enables the lens unit 500 to communicate with the digital camera 100. As described above, the lens communication terminal 506 is electrically connected to the communication terminal 440, so that the lens unit 500 can communicate with the system control unit 420 that controls the entire digital camera 100. This enables the system control unit 420 to communicate with the lens drive circuit 502, lens system control circuit 505, and aperture drive circuit 504, and to control the positions of the lens 501 and aperture 503, and to control the focus state of a real image when the lens 501 is displaced.

[0062] The recording medium 600 is a recording medium such as a memory card that is detachable from the digital camera 100 and is used to record captured images. Examples include an SD card, a FLASH (registered trademark) memory, and a hard disk.

[0063] As described above, the configuration of this embodiment can provide an imaging device that can satisfy heat dissipation performance without interfering with the movement of the imaging element.

[0064] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. [Explanation of symbols]

[0065] 100 Digital camera (imaging device) 106 Image sensor section 115 Image sensor 114 Moving parts 113 Drive mechanism 130 Heat dissipation fan (air blowing means)

Claims

1. an imaging element unit including an imaging element, a movable part supporting the imaging element, and a drive mechanism for moving the movable part in directions including a direction perpendicular to the optical axis direction; a blowing means, the air blowing unit is disposed outside a movable range of the movable part as viewed in the optical axis direction, the air discharged from the exhaust port of the air blowing means passes over the back surface of the imaging element; the drive mechanism is not disposed on an air flow path from the exhaust port to the rear surface, When viewed from the optical axis direction, an airflow path from the exhaust port to the top of the rear surface overlaps a diagonal line of the imaging element in projection.

2. The imaging device is capable of mounting an interchangeable lens, 2. The imaging device according to claim 1, wherein the drive mechanism performs blur correction by moving the movable portion in directions including a direction perpendicular to the optical axis direction.

3. 3. The imaging device according to claim 1, wherein the air blowing means is a heat dissipation fan.

4. The imaging device according to any one of claims 1 to 3, characterized in that even when the movable part moves, when viewed from the optical axis direction, the air supply path from the exhaust port to the top of the back surface and the diagonal line of the imaging element overlap in projection.

5. The imaging device according to any one of claims 1 to 4, characterized in that the air blowing means is arranged so that, no matter what position the movable part moves to when it moves, there is a diagonal line of the movable part extending in the direction in which the exhaust port of the air blowing means is facing.

6. 6. The imaging device according to claim 1, wherein the air blowing unit and the imaging element are disposed at substantially equal positions in the optical axis direction.

7. The imaging element is disposed substantially perpendicular to the optical axis, 7. The imaging device according to claim 1, wherein the air blowing means is disposed so that the air blowing direction is substantially perpendicular to the optical axis.

8. 8. The imaging device according to claim 1, wherein no member blocking the air blown by the air blowing means is disposed between the air blowing means and the movable portion.

9. 9. The imaging device according to claim 1, wherein the plurality of air blowing units are arranged outside the movable range of the movable part when viewed from the optical axis direction.

10. the air blowing means includes a first air blowing means and a second air blowing means, the blowing direction of the first blowing means is approximately parallel to one diagonal line of the movable part when viewed from the optical axis direction, 10. The imaging device according to claim 1, wherein the air blowing direction of the second air blowing means is substantially parallel to the other diagonal line of the movable part when viewed from the optical axis direction.

Images