JP7421533B2 - Imaging device - Google Patents

Description

The present disclosure relates to a hand-held imaging device that images an object.

BACKGROUND ART Hand-held imaging devices that capture images of objects have been known. For example, Patent Document 1 discloses a three-dimensional scanner that acquires three-dimensional data of teeth in the oral cavity. The three-dimensional scanner disclosed in Patent Document 1 includes an elongated housing including a front end portion that takes in light from an object and a rear end portion located on the opposite side of the front end portion, and a three-dimensional scanner provided in the housing. It has an intake port that takes in outside air and an exhaust port that exhausts air from inside the casing. As a result, the 3D scanner uses the air (outside air) taken in from the intake port to cool the heat source such as electronic components, and the air that has been heat exchanged with the heat source is sent to the outside of the housing via the exhaust port. Can be discharged.

Japanese Patent Application Publication No. 2020-32059

The three-dimensional scanner disclosed in Patent Document 1 is a type of imaging device (so-called pen grip type) that is operated by a user while holding the housing. While using the imaging device, the user holds the casing like holding a pen while pointing the operating section of the imaging device in the direction where the user's face is located, and images the object with the front end facing into the oral cavity. do. If the exhaust port is provided at the rear end of the housing, there is a risk that the inside of the 3D scanner may be seen by the user through the exhaust port while the imaging device is in use, unless some measures are taken. There is.

The present disclosure has been made to solve such problems, and aims to provide a technique that can prevent a user from seeing the inside of a three-dimensional scanner.

According to an example of the present disclosure, a handheld imaging device that images an object is provided. The imaging device includes an elongated housing including a front end that takes in light from an object and a rear end located on the opposite side of the front end, and is provided on a specific surface on the outer peripheral surface of the housing, an operation section that can be operated by the user; an air supply section that is provided on the outer circumferential surface to supply air from outside the casing to the inside of the casing; and an air supply section that is provided at the rear end to supply air from inside the casing. and an exhaust section for discharging the air to the outside of the casing. The exhaust part is inclined at a predetermined angle in the vertical direction with respect to a specific surface such that the front part of the exhaust part is located above the rear part of the exhaust part when the specific surface is directed upward. ing.

According to the present disclosure, it is possible to prevent a user from seeing the inside of a three-dimensional scanner.

1 is a diagram showing an application example of a three-dimensional scanner according to an embodiment. FIG. 1 is a diagram for explaining the configuration of a three-dimensional scanner according to an embodiment. FIG. 1 is a diagram for explaining the internal configuration of a three-dimensional scanner according to an embodiment. FIG. 3 is a diagram for explaining how to hold the three-dimensional scanner according to the embodiment. FIG. 3 is a diagram showing a cross section of an exhaust section of a three-dimensional scanner according to a comparative example. FIG. 3 is a diagram of a three-dimensional scanner according to a comparative example when viewed from the exhaust section side. FIG. 3 is a diagram for explaining an exhaust section of the three-dimensional scanner according to the embodiment. FIG. 3 is a diagram showing a cross section of the exhaust section of the three-dimensional scanner according to the embodiment. FIG. 3 is a diagram when the three-dimensional scanner according to the embodiment is viewed from the exhaust section side. 1 is a diagram showing the appearance of a three-dimensional scanner according to an embodiment. FIG. 3 is a diagram of a three-dimensional scanner according to a comparative example when viewed from the air supply section side. FIG. 3 is a diagram showing a cross section of an air supply section of the three-dimensional scanner according to the embodiment. FIG. 2 is a diagram when the three-dimensional scanner according to the embodiment is viewed from the air supply section side.

Embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the same or corresponding parts in the figures are designated by the same reference numerals, and the description thereof will not be repeated.

[Application example]
An application example of the three-dimensional scanner 1 according to the embodiment will be described with reference to FIG. FIG. 1 is a diagram showing an application example of a three-dimensional scanner 1 according to an embodiment. In the embodiment, an intraoral scanner such as the three-dimensional scanner 1 that acquires three-dimensional data of teeth in the oral cavity is exemplified as an "imaging device"; However, any hand-held scanner that captures an image of an object may be used. For example, the "imaging device" is not limited to dentistry, but may be a scanner used in other specialized fields such as ophthalmology, otorhinolaryngology, radiology, and veterinary medicine.

As shown in FIG. 1, the three-dimensional scanner 1 is connected to a control device 61 via a cradle 50 on which the three-dimensional scanner 1 is placed. The control device 61 is, for example, a general-purpose computer, to which a display 62, a mouse 63, and a keyboard 64 are connected. Note that the control device 61 may be a computer dedicated to the three-dimensional scanner 1.

The three-dimensional scanner 1 acquires three-dimensional data of an object using a built-in three-dimensional camera. Specifically, by scanning the inside of the oral cavity, the three-dimensional scanner 1 detects each detected position (vertical, horizontal, and height directions) of a plurality of points indicating the surface of an object such as a tooth as three-dimensional data. (coordinates of each axis) are acquired using an optical sensor or the like. More specifically, the three-dimensional scanner 1 inserted into the oral cavity projects patterned light onto an object and detects the reflected light from the object using an optical sensor or the like, thereby detecting the three-dimensional object. Get data.

The control device 61 generates three-dimensional image data based on the three-dimensional data acquired by the three-dimensional scanner 1, and displays a three-dimensional image corresponding to the generated three-dimensional image data on the display 62, thereby displaying the object. A two-dimensional projection of the surface viewed from a specific direction can be shown to the user.

Further, the control device 61 can also output the generated three-dimensional image data to a dental laboratory. In the dental laboratory, a dental technician creates a tooth model such as a prosthesis based on three-dimensional image data acquired from the control device 61. Note that if an automatic manufacturing device capable of automatically manufacturing tooth models, such as a milling machine and a 3D printer, is installed in the dental clinic, the control device 61 may output the three-dimensional image data to the automatic manufacturing device. .

[3D scanner configuration]
The configuration of the three-dimensional scanner 1 will be described with reference to FIGS. 2 and 3. FIG. 2 is a diagram for explaining the configuration of the three-dimensional scanner 1 according to the embodiment. FIG. 3 is a diagram for explaining the internal configuration of the three-dimensional scanner 1 according to the embodiment.

As shown in FIG. 2, the three-dimensional scanner 1 includes an elongated housing 11, an operation section 12 provided on the housing 11, and an attachment 13 that is detachable from the front end 11A of the housing 11. , and a main cable 5 connected to the housing 11.

The housing 11 includes a front end 11A that takes in reflected light from an object, and a rear end 11B located on the opposite side of the front end 11A, and has a partially rectangular parallelepiped shape. The housing 11 has a polygonal or substantially polygonal cross-sectional shape (YZ cross-section) near the rear end portion 11B, and has a plurality of surfaces as an outer circumferential surface. For example, when the housing 11 is viewed in a cross section (YZ cross section) from the rear end 11B to the front end 11A, the upper surface 110 corresponds to the surface on which the operation section 12 is provided, and the It has a bottom surface 120 located on the side, a right side surface 130 located on the right side of the cross section, and a left side surface 140 located on the left side of the cross section. That is, the casing 11 according to the embodiment has a cross-sectional shape (YZ cross section) of a quadrangular or substantially quadrangular shape, and has four surfaces as the outer circumferential surface. Note that the shape of the cross section (YZ cross section) of the housing 11 is not limited to a quadrangle, but may be another polygon such as a pentagon or a hexagon, or may be a circle or an ellipse. Here, the term "substantially polygonal" means that any corner may be round, or any side may be a gentle curve rather than a straight line, and is generally polygonal as a whole. Furthermore, a substantially quadrangular shape may be one in which one of the corners is rounded or one of the sides is not a straight line but a gentle curve, and refers to a shape that is generally quadrilateral as a whole.

In the embodiment, for convenience of explanation, the direction from the front end 11A of the housing 11 to the rear end 11B (the length direction of the housing 11) is the X-axis direction, and the direction from the left side surface 140 of the housing 11 to the right side is referred to as the X-axis direction. The direction toward the surface 130 (width direction of the housing 11) is referred to as the Y-axis direction, and the direction from the bottom surface 120 of the housing 11 toward the top surface 110 (height direction of the housing 11) is referred to as the Z-axis direction.

The operation unit 12 includes a plurality of types of switches for the user to operate the three-dimensional scanner 1, and is provided on a specific surface (in this example, the top surface 110) on the outer peripheral surface of the housing 11. The multiple types of switches include, for example, a power switch for turning on or off the power of the 3D scanner 1, a changeover switch for switching scan types, and a switch for deleting acquired 3D data when redoing a scan. Including function switches, etc.

The three-dimensional scanner 1 further includes an exhaust section 2 provided at the rear end portion 11B of the housing 11. The exhaust section 2 exhausts air from inside the housing 11 to the outside of the housing 11 via an exhaust port (not shown).

The exhaust section 2 includes an end cap 22 and a mesh member 21 provided between the exhaust port and the inside of the housing 11. A plurality of openings are formed in the mesh member 21 and have an opening length that is long enough to prevent foreign matter from entering the inside of the casing 11 . For example, the mesh member 21 has a honeycomb mesh structure, and a plurality of hexagonal openings each having a length of about 0.4 mm are formed in the mesh member 21. By applying the honeycomb mesh structure to the mesh member 21, it is possible to secure an opening area in the mesh member 21 through which air passes, and to increase the strength of the mesh member 21.

Furthermore, the three-dimensional scanner 1 further includes an air supply section 3 provided on the outer peripheral surface of the housing 11. Specifically, the three-dimensional scanner 1 includes two air supply units 3 symmetrically on each of the right side surface 130 and the left side surface 140 of the housing 11. The air supply unit 3 takes in air (outside air) from outside the housing 11 through an air supply port (not shown), and supplies the taken air into the inside of the housing 11.

The air supply section 3 includes a mesh member 31 provided between the air supply port and the inside of the housing 11 . A plurality of openings are formed in the mesh member 31 and have an opening length that is long enough to prevent foreign matter from entering the inside of the casing 11 . For example, the mesh member 31 is formed with a plurality of holes having a diameter of about 0.4 mm.

As shown in FIG. 3, the three-dimensional scanner 1 includes a fan 15 and at least one electronic component serving as a heat source inside a housing 11. For example, the three-dimensional scanner 1 includes an image sensor 17, a power supply circuit 18, and an FPGA (Field Programmable Gate Array) 19 as a heat source. Note that the three-dimensional scanner 1 may include other components or electronic circuits such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit) as a heat source.

Air (outside air) from outside the housing 11 passes through the mesh member 31 of the air supply section 3 and enters the inside of the housing 11 . The air that has entered the interior of the casing 11 flows into the exhaust section 2 while cooling the heat source by driving the fan 15, passes through the mesh member 21, and is discharged to the outside of the casing 11. Thereby, the three-dimensional scanner 1 can cool the heat source using air from outside the housing 11.

[How to hold the 3D scanner]
How to hold the three-dimensional scanner 1 will be explained with reference to FIG. 4. FIG. 4 is a diagram for explaining how to hold the three-dimensional scanner 1 according to the embodiment.

The three-dimensional scanner 1 is an imaging device of a type (so-called pen grip type) in which a user holds and operates a housing 11. While using the three-dimensional scanner 1, the user grasps the vicinity of the front end 11A of the housing 11, like holding a pen, while facing the top surface 110, where the operation section 12 is provided, in the direction in which the user's face is located. The reason why the housing 11 is held with the operation unit 12 facing the direction in which the user's face is located is that the user needs to operate the operation unit 12 when scanning the inside of the oral cavity using the three-dimensional scanner 1. It is.

For example, if the operation unit 12 is not facing the direction in which the user's face is located while using the 3D scanner 1, the user will not be able to see the operation unit 12, and the user will not be able to operate the operation unit 12 comfortably. I can't. Therefore, the user grips the housing 11 while pointing the operating unit 12 in the direction in which the user's face is located. Furthermore, as shown in FIG. 1, when the user holds the three-dimensional scanner 1 using a pen grip method, the position of the user's face is located above the housing 11. Therefore, while using the three-dimensional scanner 1, the user grips the housing 11 while facing the top surface 110, on which the operation section 12 is provided, in the direction in which the user's face is located (i.e., upward). ing.

[Configuration of exhaust section]
As described above, the user grips the housing 11 while pointing the operation unit 12 of the three-dimensional scanner 1 in the direction in which the user's face is located, and images the object by pointing the front end 11A toward the oral cavity. There is a risk that the inside of the casing 11 (for example, a heat source such as an FPGA 19, an electronic board, or other miscellaneous items) may be seen by the user through the exhaust port of the exhaust section 2 provided at the rear end 11B of the casing 11. Therefore, there is a risk that the beauty of the three-dimensional scanner 1 as a product may be impaired.

For example, FIG. 5 is a diagram showing a cross section of an exhaust section 200 of a three-dimensional scanner according to a comparative example. FIG. 6 is a diagram of a three-dimensional scanner according to a comparative example viewed from the exhaust section 200 side. Note that FIG. 5 shows an A-A' cross section of the exhaust section 2 when the exhaust section 200 is cut in the Z-axis direction as shown in FIG.

As shown in FIG. 5, the exhaust section 200 includes a mesh member 21 and an end cap 22 in order from the front end 11A to the rear end 11B.

The end cap 22 is located at the outermost side of the housing 11 in the X-axis direction, and includes a plurality of slits 22A through which air from inside the housing 11 passes. That is, the end cap 22 forms a plurality of slits 22A. As described above, the mesh member 21 has a honeycomb mesh structure and is provided closer to the inside of the housing 11 than the end cap 22 is.

As shown by the dotted line arrow in FIG. The liquid flows into the housing 11, passes through the mesh member 21, and is discharged to the outside of the housing 11 through the plurality of slits 22A.

As shown in FIG. 6, when the three-dimensional scanner is viewed from the exhaust part 200 side, the inside of the housing 11 (for example, a heat source such as an FPGA 19, an electronic board, etc. , or other miscellaneous items), which may spoil the aesthetic appearance of the 3D scanner as a product.

Therefore, the exhaust section 2 of the three-dimensional scanner 1 according to the embodiment has the upper surface 110 of the housing 11 facing upward in order to prevent the user from seeing the inside of the housing 11 through the exhaust port. In this case, it is configured to be inclined at a predetermined angle in the vertical direction (Z-axis direction) with respect to the upper surface 110.

The exhaust section 2 according to the embodiment will be described with reference to FIGS. 7 to 9. FIG. 7 is a diagram for explaining the exhaust section 2 of the three-dimensional scanner 1 according to the embodiment. FIG. 8 is a diagram showing a cross section of the exhaust section 2 of the three-dimensional scanner 1 according to the embodiment. FIG. 9 is a diagram of the three-dimensional scanner according to the embodiment viewed from the exhaust section 2 side. Note that FIG. 8 shows a B-B' cross section of the exhaust section 2 when the exhaust section 2 is cut in the Z-axis direction as shown in FIG.

As shown in FIGS. 7 and 8, the exhaust section 2 includes a louver 23 in addition to the mesh member 21 and the end cap 22. Specifically, the exhaust section 2 includes a louver 23, a mesh member 21, and an end cap 22 in this order from the front end 11A to the rear end 11B. The mesh member 21 is provided so as to be sandwiched between the louver 23 and the end cap 22.

The louver 23 includes a plurality of slits 23A and a plurality of plate portions 23B that allow air from inside the housing 11 to pass through the plurality of slits 23A. The opening of the slit 22A in the end cap 22 on the side of the mesh member 21 and the louver 23 coincides with the opening of the slit 23A of the louver 23 on the side of the mesh member and the end cap 22, so that the air from inside the housing 11 is It is provided to pass through the slit. The plurality of slits 23A are formed by the plurality of plate parts 23B. The plurality of plate portions 23B are tilted at a predetermined angle α in the vertical direction (Z-axis direction) with respect to the top surface 110 when the top surface 110 of the housing 11 in which the operation portion 12 is provided is directed upward (Z-axis direction). are doing. Specifically, the plurality of plate portions 23B are each inclined in the vertical direction (Z-axis direction) from the front end portion 11A to the rear end portion 11B direction (X-axis direction) when the upper surface 110 is set upward. It is arranged as follows. Note that the plurality of plate portions 23B are integrally formed with other portions of the louver 23.

Here, the predetermined angle α at which the plurality of plate parts 23B is inclined is such that when a user holds the three-dimensional scanner 1 and views the exhaust part 2 from the direction of the rear end part 11B, air from inside the housing 11 is This angle is such that the inside of the housing 11 cannot be visually recognized even though the inside of the housing 11 is discharged to the outside of the housing 11. For example, the predetermined angle α is 30 degrees or approximately 30 degrees.

As shown by the dotted line arrow in FIG. 8, the air (outside air) taken in from the outside of the casing 11 through the air supply section 3 is directed toward the exhaust section 2 while cooling the heat source by the drive of the fan 15. and passes through the plurality of slits 23A. At this time, the air from inside the casing 11 is urged by the plurality of plate parts 23B, passes through the plurality of slits 23A from above to diagonally downward, and further passes through the mesh member 21 and passes through the plurality of slits 23A. It is discharged to the outside of the housing 11 through the slit 22A.

Since the exhaust section 2 is configured as described above, even when the three-dimensional scanner 1 is viewed from the exhaust section 2 side, as shown in FIG. 9, only the mesh member 21 can be seen through the slit 22A of the end cap 22. The inside of the casing 11 (for example, a heat source such as the FPGA 19, an electronic board, or other miscellaneous items) located on the back side of the mesh member 21 is difficult to see.

That is, the plurality of plate parts 23B of the louver 23 are arranged to be inclined in the vertical direction (Z-axis direction) from the front end part 11A to the rear end part 11B direction (X-axis direction), so that the user can When the exhaust section 2 of the three-dimensional scanner 1 is viewed from above with the housing 11 being held like holding a pen while the top surface 110 is facing in the direction in which the user's face is located (i.e., upward, in the Z-axis direction) However, since the user's line of sight hits the plurality of plate parts 23B, the user's line of sight does not reach the inside of the casing 11. Thereby, it is possible to prevent the user from seeing the inside of the three-dimensional scanner 1 through the exhaust port of the exhaust section 2.

[Configuration of air supply section]
FIG. 10 is a diagram showing the appearance of the three-dimensional scanner 1 according to the embodiment. As shown in FIG. 10, the air supply section 3 is provided on the outer peripheral surface of the housing 11. Here, if no measures are taken, there is a risk that the inside of the housing 11 (for example, a heat source such as an FPGA 19, an electronic board, or other miscellaneous items) may be seen by the user through the air supply port of the air supply unit 3. Therefore, there is a risk that the beauty of the three-dimensional scanner 1 as a product may be impaired.

For example, FIG. 11 is a diagram of a three-dimensional scanner according to a comparative example viewed from the air supply unit 300 side. As shown in FIG. 11, when the three-dimensional scanner is viewed from the air supply unit 300 side, the interior of the casing 11 on the back side of the mesh member 31 (for example, a heat source such as an FPGA 19, an electronic board, or other miscellaneous items) I can see it.

Therefore, the air supply unit 3 of the three-dimensional scanner 1 according to the embodiment has a labyrinth structure in order to prevent the user from seeing the inside of the housing 11 through the air supply port.

The air supply unit 3 according to the embodiment will be described with reference to FIGS. 12 and 13. FIG. 12 is a diagram showing a cross section of the air supply section 3 of the three-dimensional scanner 1 according to the embodiment. FIG. 13 is a diagram of the three-dimensional scanner 1 according to the embodiment viewed from the air supply section 3 side. Note that FIG. 12 shows a C-C' cross section of the air supply section 3 when the air supply section 3 is cut in the Z-axis direction as shown in FIG. Further, in FIG. 12, the air supply section 3 provided on the left side surface 140 side of the case 11 is shown, but the air supply section 3 provided on the right side surface 130 side of the case 11 is It is configured laterally symmetrically with the air supply section 3 provided on the left side surface 140 side of the air supply section 11.

As shown in FIG. 12 , the air supply unit 3 includes a wall portion 32 located closer to the inside of the housing 11 than the mesh member 31 is. The wall portion 32 includes a first wall portion 32A provided in a direction from the left side surface 140 of the case 11 toward the inside of the case 11 (Y-axis direction), and a first wall portion 32A provided in a direction from the bottom surface 120 of the case 11 toward the top surface 110 ( Z-axis direction).

As shown by the arrow, the wall 32 having such a configuration allows the air ( Outside air) is allowed to pass into the interior of the housing 11, and the air is made to flow into a heat source such as the FPGA 19.

Since the air supply section 3 is configured as described above, even when the three-dimensional scanner 1 is viewed from the air supply section 3 side, only the mesh member 31 is visible, as shown in FIG. The inside of the housing 11 (for example, a heat source such as the FPGA 19, an electronic board, or other miscellaneous items) located on the back side of the housing 11 is difficult to see.

That is, the second wall 32B provided between the outside of the housing 11 and the inside of the housing 11 allows the user to access the air supply unit 3 of the three-dimensional scanner 1 from the right side 130 or the left side 140 of the housing 11. Even when the user looks at the second wall portion 32B, the user's line of sight does not reach the inside of the casing 11. Thereby, it is possible to prevent the user from seeing the inside of the three-dimensional scanner 1 through the air supply port of the air supply section 3, and it is possible to maintain the aesthetic appearance of the three-dimensional scanner 1 as a product.

[Modified example]
The present disclosure is not limited to the above embodiments, and various modifications and applications are possible. Modifications applicable to the present disclosure will be described below.

The exhaust section 2 according to the embodiment uses the louver 23 including the plurality of plate sections 23B to prevent the user from viewing the inside of the casing 11. The inside may not be visible to the user. For example, the exhaust part according to the modified example is formed of a thick plate member in the direction from the front end 11A to the rear end 11B (X-axis direction), and in the direction from the front end 11A to the rear end 11B (X-axis direction). A configuration may be provided in which a plurality of elongated holes are formed that are respectively inclined in the vertical direction (Z-axis direction). Such a plurality of elongated holes may be used to exhaust air from inside the casing 11 and to prevent the user from seeing the inside of the three-dimensional scanner 1.

In the air supply section according to the modification, the mesh member 31 may be formed of a honeycomb mesh structure, similar to the mesh member 21.

In the embodiment, the three-dimensional scanner 1 is illustrated as an "imaging device," but the "imaging device" may be, for example, an intraoral camera, an optical coherence tomography (OCT), an ultraviolet/infrared, Other imaging devices such as a terahertz imaging device or a fluorescence imaging device may also be used.

The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is indicated by the claims rather than the above description, and it is intended that all changes within the meaning and range equivalent to the claims are included. Note that the configurations exemplified in this embodiment and the configurations exemplified in the modified examples can be combined as appropriate.

1 Three-dimensional scanner, 2,200 Exhaust part, 3,300 Air supply part, 5 Main cable, 11 Housing, 11A Front end part, 11B Rear end part, 12 Operation part, 13 Attachment, 15 Fan, 17 Image sensor, 18 Power supply circuit, 19 FPGA, 21, 31 mesh member, 22 end cap, 22A, 23A slit, 23 louver, 23B plate section, 32 wall section, 32A first wall section, 32B second wall section, 50 cradle, 61 control device , 62 display, 63 mouse, 64 keyboard, 110 top surface, 120 bottom surface, 130 right side surface, 140 left side surface.

Claims (9)

A hand-held imaging device that images an object,
an elongated housing including a front end that takes in light from the object and a rear end located on the opposite side of the front end;
an operation section that is provided on a specific surface of the outer peripheral surface of the housing and that can be operated by a user;
an air supply section provided on the outer peripheral surface and supplying air from outside the housing into the inside of the housing;
an exhaust section provided at the rear end portion and discharging air from inside the casing to the outside of the casing;
The exhaust section is arranged in a predetermined vertical direction with respect to the specific surface such that when the specific surface is directed upward, the front part of the exhaust section is located above the rear part of the exhaust section. The imaging device is tilted at an angle. The imaging device according to claim 1, wherein the exhaust section includes a plurality of plate sections each inclined at the predetermined angle in the vertical direction with respect to the specific surface, when the specific surface is the upward direction. . The plurality of plate portions are arranged to be inclined in the vertical direction from the front end toward the rear end when the specific surface is the upper direction. Imaging device. The predetermined angle is such that when the user holds the imaging device and views the exhaust section from the direction of the rear end, air from inside the housing is exhausted to the outside of the housing. , the imaging device according to any one of claims 1 to 3, wherein the angle is such that the inside of the housing cannot be visually recognized. The imaging device according to any one of claims 1 to 4, wherein the predetermined angle is 30 degrees or approximately 30 degrees. The imaging device according to any one of claims 1 to 5, wherein the exhaust section further includes a first mesh member. The imaging device according to claim 6, wherein the first mesh member has a honeycomb mesh structure. The air supply unit includes a wall part that partitions a wall between the outside of the casing and the inside of the casing and allows air flowing in from the outside of the casing to pass into the inside of the casing. The imaging device according to any one of claims 1 to 7. The imaging device according to claim 8, wherein the air supply section includes a second mesh member.

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