Imaging device and window glass equipped with imaging device

Abstract

This imaging device includes: a first hood fixed to a principal surface on the indoor side of a building's window glass; a second hood detachable from the first hood; and a camera body which is capable of imaging the outdoor side of the window glass via a lens, and which is attached to the second hood. The first hood has a through hole for exposing the lens, a notch for exposing the lens, or a transparent part in which at least a front section of the lens is transparent.

Description

Imaging Device and Window Glass with Imaging Device 【0001】 The present disclosure relates to an imaging device and a window glass with an imaging device. 【0002】 Conventionally, there has been a window camera including an imaging unit that images the outside from the indoor surface of a window glass, a housing having a rectangular mounting surface facing parallel to the indoor surface, recessing the imaging unit in the mounting surface, and disposing the optical axis of the imaging unit to coincide with the intersection of a pair of diagonals on the mounting surface, and a light shielding member formed of an elastic material, protruding from the mounting surface toward the indoor surface and formed in a rectangular frame shape along the outer shape of the mounting surface, and elastically deformed by the pressing from the housing to close the gap between the indoor surface and the mounting surface. This window camera is fixed to the indoor surface of the window glass by a suction cup piece of a suction cup adsorption mechanism of the housing. The suction cup piece is formed of an elastic material (see, for example, Japanese Unexamined Patent Application Publication No. 2021-111812). 【0003】 By the way, for example, for maintenance or the like, there may be a case where it is required that the camera body be easily detachable from the window glass. However, in a configuration where the window camera is fixed to the window glass with a suction cup piece that adsorbs to the indoor surface (the main surface on the indoor side) of the window glass as in the conventional case, it is not easy to attach and detach the window camera from the window glass. 【0004】 Therefore, an object is to provide an imaging device that is easily detachable from a window glass and a window glass with an imaging device. 【0005】 The imaging device according to an embodiment of the present disclosure includes a first hood fixed to the main surface on the indoor side of a window glass of a building, a second hood detachably attached to the first hood, and a camera body capable of imaging the outdoor side of the window glass through a lens, the camera body being attached to the second hood, and the first hood having a through hole that exposes the lens, a notch that exposes the lens, or a transparent portion at least the front portion of the lens being transparent. 【0006】 An imaging device that is easily detachable from a window glass and a window glass with an imaging device can be provided. 【0007】This figure shows an example of the configuration of the imaging device 100 and its surroundings from the outside. This figure shows an example of the imaging device 100 in a disassembled state. This figure shows an example of the configuration of the imaging device 100 and its surroundings from the inside. This figure shows an example of the configuration of the imaging device 100 as a modified embodiment. This figure shows an example of the configuration of the second hood 120 with the filter 125 attached. This figure shows an example of the configuration of the second hood 120 with the filter 125 attached. 【0008】 The following describes embodiments applying the imaging device and window glass with the imaging device described herein. In the following, the same elements may be denoted by the same reference numerals, and redundant descriptions may be omitted. 【0009】 In the following, for ease of understanding, the scale of each component in the drawings may differ from the actual scale. In this embodiment, a three-dimensional Cartesian coordinate system with three axes (X-axis, Y-axis, and Z-axis) is used. For example, the width direction (horizontal direction) of the window glass is defined as the X-axis, the height direction of the window glass is defined as the Y-axis, and the thickness direction of the window glass is defined as the Z-axis. Also, for example, the direction from the bottom to the top of the window glass is defined as the +Y-axis, and the opposite direction is defined as the -Y-axis. Also, for example, the indoor side of the window glass is defined as the +Z-axis, and the outdoor side of the window glass is defined as the -Z-axis. In the following explanation, the +Y-axis direction may be referred to as "up," and the -Y-axis direction as "down." Plane view refers to viewing from the XY plane. For example, the X-axis and Z-axis directions are approximately parallel to the direction parallel to the horizontal plane (horizontal direction), and the Y-axis direction is approximately parallel to the vertical direction perpendicular to the horizontal plane. 【0010】 The X-axis, Y-axis, and Z-axis directions represent directions parallel to the X-axis, Y-axis, and Z-axis, respectively. The X-axis, Y-axis, and Z-axis directions are mutually orthogonal. The XY plane, YZ plane, and ZX plane represent virtual planes parallel to the X-axis and Y-axis, virtual planes parallel to the Y-axis and Z-axis, and virtual planes parallel to the Z-axis and X-axis, respectively. 【0011】<Embodiment> Figure 1A is a diagram showing an example of the imaging device 100 and its surrounding configuration from the outside. Figure 1B is a diagram showing an example of the imaging device 100 in a disassembled state. Figure 1C is a diagram showing an example of the imaging device 100 and its surrounding configuration from the inside. Figures 1A and 1C show a window 10 provided in the wall 1W of building 1. Building 1 is an example of a structure. 【0012】 Window 10 has a window pane 11 and a window frame 12. The window pane 11 is parallel to the XY plane. The window frame 12 is an example of a structure surrounding the window pane 11. The window pane 11 is a fixed window as an example, but it may also be a sliding window or the like. Figures 1A and 1C show a portion of the window pane 11 and the window frame 12. 【0013】 The imaging device 100 is used while fixed to the main surface 11A on the indoor side of the window glass 11. For example, the imaging device 100 is a circular device in plan view and is positioned at the corners of the window frame 12 on the +X axis side and the +Y axis side of the main surface 11A on the indoor side of the window glass 11. Note that the position where the imaging device 100 is positioned does not have to be limited to the corners of the window frame 12 on the +X axis side and the +Y axis side of the main surface 11A, but can be anywhere on the main surface 11A on the indoor side of the window glass 11. 【0014】 Here, the window glass 11, the window frame 12, and the imaging device 100 constitute the window glass with imaging device 200 of the embodiment. However, the window glass with imaging device 200 may include the window glass 11 and the imaging device 100, but may not include the window frame 12. 【0015】The imaging device 100 is a device that captures images of the outdoors through the window glass 11, and is connected to a processing device that performs image processing, etc., via a cable (not shown) as an example. The imaging device 100 transmits image data to the processing device via the cable. The imaging device 100 also receives control signals from the processing device via the cable to switch the camera body 130 on / off, etc., and receives power from the processing device. The imaging device 100 may also communicate wirelessly with the processing device, transmitting image data wirelessly and receiving control signals wirelessly. The imaging device 100 may also be configured to perform image processing, etc., on the captured images. The imaging device 100 may also have an intelligent vision sensor and be configured to perform high-speed edge AI (Artificial Intelligence) processing in addition to image processing. The imaging device 100 may also receive power from devices other than the processing device, such as from an outlet in the building 1. 【0016】 The processing unit is located inside building 1, but is omitted in Figures 1A to 1C. For example, the processing unit may be connected to an information processing unit such as an outdoor server via a wireless communication device or cable installed inside building 1. Alternatively, for example, the processing unit may be connected to an information processing unit such as a PC (Personal Computer) or server installed inside building 1 via a cable or wireless communication device, and the PC or server may be connected to an outdoor host server via a cable or wireless communication device. 【0017】 This section describes a configuration in which the window glass 11 is installed in building 1, but the window glass 11 may also be installed in structures other than building 1. Examples of structures other than building 1 include bridge piers, bridges, or civil engineering structures such as dams, as well as historical buildings or artistic buildings. 【0018】The window glass 11 is a glass plate used in the windows of a building such as Building 1. The window glass 11 may also be a glass facade located in the entrance of Building 1. The window glass 11 is formed in a rectangular shape in plan view, for example, and has an outer surface and an inner surface. The inner surface of Building 1 is the indoor side of Building 1. The thickness of the window glass 11 is set according to the specifications of Building 1. Note that "rectangular" includes not only rectangles and squares, but also shapes with beveled corners. The shape of the window glass in plan view is not limited to a rectangle, but may also be a circle or other shape. 【0019】 The window glass 11 is not limited to single panes, but may also be laminated glass or double-glazed glass. Furthermore, the window glass 11 may also be Low-E glass, dimmable glass, or glass with linear elements. 【0020】 Examples of materials for the window glass 11 include soda-lime silica glass, borosilicate glass, aluminosilicate glass, or alkali-free glass. 【0021】 The thickness of the window glass 11 is preferably 1.0 to 20 mm. If the thickness of the window glass 11 is 1.0 mm or more, the window 10 has sufficient strength to mount the imaging device 100. If the thickness of the window glass is 20 mm or less, it has sufficient radio wave transmission performance for the wireless communication device to stably connect wirelessly to an information processing device such as an outdoor server. The thickness of the window glass is more preferably 3.0 to 15 mm, and even more preferably 9.0 to 13 mm. 【0022】Furthermore, the reflectance on the outer surface of the window glass 11 is, for example, 3% or more. Also, the visible light transmittance (TVA) of the window glass 11, based on a standard A light source as defined in JIS R 3106:1998, is, for example, 30% to 98%. If the TVA of the window glass 11 is 30% or more, the imaging device 100 will have sufficient image quality when capturing an outdoor image through the window glass 11. Also, if the TVA of the window glass 11 is 98% or less, it will have excellent solar radiation shielding properties. The TVA of the window glass 11 is preferably 50% or more, more preferably 70% or more, even more preferably 75% or more, and particularly preferably 80% or more. Also, the TVA of the window glass 11 is preferably 95% or less, more preferably 92% or less, even more preferably 90% or less, and particularly preferably 85% or less. 【0023】 Figures 1A and 1C show the corner portions of the window frame 12 that hold the window glass 11, on the +X axis side and the +Y axis side. The window frame 12 has a frame portion 12X that extends in the X direction and a frame portion 12Y that extends in the Y direction. The frame portions 12X and 12Y are connected to each other at the corners of the window glass 11 on the +X axis side and the +Y axis side, and the angle between the frame portions 12X and 12Y is 90 degrees. The frame portions 12X and 12Y are two adjacent frame portions of the window frame 12. 【0024】 The frame portions 12X and 12Y have, for example, a rectangular annular shape in plan view, and the window glass 11 is fitted into the rectangular opening in plan view enclosed by the frame portions 12X and 12Y. The surface corresponding to the inner wall of the rectangular opening enclosed by the frame portions 12X and 12Y is, for example, a flat surface. In Figures 1A and 1C, the surface corresponding to the inner wall of frame portion 12X is the surface parallel to the XZ plane on the -Y direction side of frame portion 12X. In Figures 1A and 1C, the surface corresponding to the inner wall of frame portion 12Y is the surface parallel to the YZ plane on the -X direction side of frame portion 12Y. 【0025】 The imaging device 100 is a device used by being attached to the indoor side of the window glass 11 of building 1, and is capable of capturing both video and still images. This section will describe the general configuration and functions of the imaging device 100, and the detailed configuration of the imaging device 100 will be described later. 【0026】The imaging device 100 includes a lens 131A positioned toward the main surface 11A on the indoor side of the window glass 11, and images an outdoor subject through the lens 131A and the window glass 11. The subject is, for example, the scenery visible from the window glass 11 (everything visible from the window glass 11), and the scenery may be, for example, a road, sidewalk, passageway, or intersection, entrance to building 1, ticket gate or entrance to a station, etc., and may also include people, vehicles, etc. The imaging device 100 may also capture infrared images if it is possible to acquire infrared images. The information captured by the imaging device 100 may be used for digital twin computing. 【0027】 Such an imaging device 100 can be used for a variety of purposes and is not limited to any particular use. The imaging device 100 can capture images of subjects outside the window glass 11 of the building 1 and use the resulting images for a variety of purposes. Here, as an example, we will describe an application in which the imaging device 100 is used as a security surveillance camera. Since the imaging device 100 is positioned facing the main surface 11A on the indoor side of the window glass 11, it is difficult to see from the outside of the window glass 11 due to reflection. For this reason, its use as a surveillance camera is one example of a suitable application for the imaging device 100. 【0028】 The height at which the imaging device 100 is attached to the windowpane 11 is preferably higher than the average human height, from the viewpoint of allowing a good view of the area to be monitored. For example, the height at which the imaging device 100 is attached to the windowpane 11 is preferably 2m or more, and it may be attached to a windowpane 11 on the second floor or higher of the building 1, for example. If the height at which the imaging device 100 is attached to the windowpane 11 is 2m or more, it will be difficult for the person being monitored to see it. 【0029】The height at which the imaging device 100 is attached to the window glass 11 can be set to a height that allows for the capture of an appropriate image, taking into consideration the field of view of the imaging device 100, the distance to the subject, etc. The upper limit of the height at which the imaging device 100 is attached to the window glass 11 is the height of the top edge of the highest window glass 11 in the building 1. The height of the imaging device 100 can be defined as the height from a reference plane parallel to the horizontal plane (for example, the ground, floor, or a virtual plane). Alternatively, the height of the imaging device 100 may be the height of the lens 131A. 【0030】 <Detailed Configuration of Imaging Device 100> The imaging device 100 includes a first hood 110, a second hood 120, a camera body 130, a first holding part 140, and a second holding part 150. The first holding part 140 and the second holding part 150 are examples of holding parts. In the exploded view of Figure 1B, the first hood 110, the second hood 120, the camera body 130, the first holding part 140, and the second holding part 150 are shown obliquely from the -Z direction, but the configuration of the second hood 120 from the +Z direction is also shown. 【0031】 The imaging device 100 is designed to be lightweight for mounting on a windowpane 11. While most general surveillance cameras are fixed to the ceiling or wall, the imaging device 100 has been made lightweight by incorporating the first hood 110, the second hood 120, the first holding part 140, and the second holding part 150, which allows it to be attached to the windowpane 11 using double-sided tape or the like. 【0032】 <First Hood 110> The first hood 110 is fixed to the main indoor surface 11A of the window glass 11 of the building 1, for example, by double-sided tape 115. The first hood 110 is, for example, an annular member and has a base portion 111 and a protrusion portion 112. 【0033】The first hood 110 may be made of resin or metal, for example. As a resin material, a thermoplastic resin can be used, for example. As a thermoplastic resin, PC (polycarbonate) / ASA (Acrylate Styrene Acrylonitrile), ASA, or AES (Acrylonitrile Ethylene Styrene) can be used. As a metal material, aluminum, iron, stainless steel, etc. can be used. 【0034】 The first hood 110 is preferably black, as it absorbs light best, but it may be other colors. For example, the surface of the first hood 110 can be painted to an appropriate color. For example, a paint that suppresses degradation by ultraviolet light, such as a radical-controlled paint, is preferred. 【0035】 For example, the surface color of the first hood 110 may be any color with a lightness of 5 or less. Lightness is, for example, defined by JIS Z8721-1993. 【0036】 Since reflectance and brightness are correlated, a brightness of 5 or less corresponds to a reflectance of 20% or less. If the reflectance of the surface of the first hood 110 is 20% or less, strong incident light, such as sunlight, will be unnecessarily reflected by the first hood 110 and enter the lens 131A, preventing deterioration of the quality of the captured image. 【0037】 Therefore, its use as a surveillance camera is one example of a suitable application for the imaging device 100. When used as a surveillance camera, the imaging device 100 may be positioned so that the sun is behind the subject when photographing outdoors, depending on the time of day and installation location. Even in such cases, it is easy to acquire high-quality images including the subject being photographed when photographing the outdoor area being monitored. 【0038】 Regarding the color of the first hood 110, there are no particular restrictions on hue and saturation; any color with a lightness of 5 or less is acceptable. Besides black, examples of colors with a lightness of 5 or less include dark gray. In this way, the reflectivity of the surface of the first hood 110 is sufficiently low, allowing the imaging device 100 to obtain a sufficiently clear image. 【0039】 The thickness of the first hood 110 is preferably 0.15 mm or more, more preferably 0.4 mm or more, and even more preferably 1.0 mm or more. If the thickness of the first hood 110 is 0.15 mm or more, it has sufficient strength to attach the imaging device 100 to the window glass 11. Furthermore, the thickness of the first hood 110 is preferably 5 mm or less, and more preferably 3 mm or less. If the thickness of the first hood 110 is 5 mm or less, when an earthquake occurs and the window glass 11 moves, the first hood 110 is more likely to fit into the window frame 12, making it less likely for the imaging device 100 to detach from the window glass 11 and less likely to be damaged. 【0040】 The base portion 111 is a thin plate-like part having an annular shape in plan view. A through hole 110A is provided in the center of the base portion 111 in plan view. The through hole 110A penetrates the base portion 111 and the protrusion 112 in the Z direction. A first screw engagement portion 112A is provided on the inner circumferential surface of the through hole 110A. The opening shape of the through hole 110A is, for example, circular. The center of the through hole 110A in plan view coincides with the center of the base portion 111 in plan view. 【0041】 The base portion 111 has a surface 111A on the -Z direction side (outdoor side) and a surface 111B on the +Z direction side (indoor side). Surface 111A is adhered to the main indoor surface 11A of the window glass 11 by double-sided tape 115. Surface 111A is the -Z direction surface of the first hood 110. 【0042】The double-sided tape 115 is, for example, annular in plan view and has substantially the same size as the base 111. As an example, an OCA (Optically Clear Adhesive) or a double-sided tape of a transparent foamed base material or the like can be used for the double-sided tape 115. Further, the OCA or the double-sided tape of a transparent foamed base material may contain a UV (ultraviolet) absorber. Even if ultraviolet rays transmitted through the window glass 11 are incident on the OCA or the double-sided tape of a transparent foamed base material, deterioration of the OCA or the double-sided tape of a transparent foamed base material can be suppressed, and the first hood 110 can be stably fixed to the main surface 11A of the window glass 11 over a long period. As the UV absorber, for example, benzotriazoles, triazoles, and cinnamates can be used. 【0043】 Here, a configuration in which the surface 111A on the -Z direction side of the first hood 110 is adhered to the main surface 11A on the indoor side of the window glass 11 with the double-sided tape 115 will be described. However, the surface 111A on the -Z direction side of the first hood 110 may be fixed to the main surface 11A on the indoor side of the window glass 11 by means other than the double-sided tape 115 (for example, vacuum suction or the like). 【0044】 The convex portion 112 is a cylindrical portion protruding in the +Z direction from the surface 111B on the +Z direction side of the base 111. The inner peripheral surface of the convex portion 112 is the inner peripheral surface of the through hole 110A. Since the outer diameter of the convex portion 112 is smaller than the outer diameter of the base 111, the convex portion 112 protrudes in the +Z direction at the central portion of the surface 111B on the +Z direction side of the base 111 (the central portion surrounding the through hole 110A). 【0045】 A first screw engaging portion 112A is provided on the inner peripheral surface of the convex portion 112. The first screw engaging portion 112A is an example of the first screw engaging portion. The first screw engaging portion 112A is a screw portion formed on the inner peripheral surface of the convex portion 112 and can be engaged with the second screw engaging portion 122 of the second hood 120. The second hood 120 is fixed to the first hood 110 by engaging the second screw engaging portion 122 with the first screw engaging portion 112A and screwing it. 【0046】Here, the configuration in which the first hood 110 has the through-hole 110A has been described. However, instead of the through-hole 110A, the first hood 110 may have a notch that exposes the lens 131A, or a configuration having a transparent portion where at least the front portion of the lens 131A is transparent. 【0047】 The notch that exposes the lens 131A is, for example, a configuration in which a part of the base portion 111 and the convex portion 112 around the through-hole 110A is cut away to the outer peripheral surface of the base portion 111 and the convex portion 112. In this case, as an example, the base portion 111 and the convex portion 112 have a C-shaped configuration in plan view. The notch overlaps the through-hole 110A in plan view when the second hood 120 is attached to the first hood 110. Note that the notch that exposes the lens 131A is not limited to such a shape and may have various shapes. 【0048】 The first hood 110 having a configuration having a transparent portion where at least the front portion of the lens 131A is transparent means that the first hood 110 does not have the through-hole 110A, and a portion corresponding to the through-hole 110A is filled with a transparent resin or the like. In this case, it is only necessary that the portion corresponding to the through-hole 110A is transparent, and the base portion 111 and the convex portion 112 may be either transparent or non-transparent. The transparent portion overlaps the through-hole 110A in plan view when the second hood 120 is attached to the first hood 110. Also, even in a configuration where the portion of the through-hole 110A is filled with a transparent resin or the like, the opposing surface 121A of the second hood 120 faces the main surface 11A on the indoor side of the window glass 11 through the transparent resin portion of the first hood 110. 【0049】 <Second Hood 120> The second hood 120 constitutes the hood of the camera body 130 together with the first hood 110. The second hood 120 is an annular member and has an opening 120A, an opposing surface 121A, a back surface 121B, a second screw engaging portion 122, and a steel plate 123. The second screw engaging portion 122 is an example of the second screw engaging portion. The steel plate 123 is an example of a magnetic metal portion. 【0050】The second hood 120 can be attached to the first hood 110 by inserting the second screw engagement portion 122 into the first screw engagement portion 112A and fastening it with screws. The second hood 120 can also be removed from the first screw engagement portion 112A by rotating it in the opposite direction to how it was attached. In other words, the second hood 120 is configured to be detachably attached to the first hood 110. 【0051】 The second hood 120 may, for example, be made of resin or metal, similar to the first hood 110. The resin material and metal material may be the same as those used for the first hood 110. The color of the second hood 120 is preferably black, which absorbs light best, similar to the first hood 110, but it may be other than black, or the same as the first hood 110. 【0052】 The opening 120A penetrates the center of the second hood 120 in the Z direction when viewed from above. The opening 120A connects the opposing surface 121A and the rear surface 121B. The opening 120A is provided to expose the lens 131A of the camera body 130. The opening 120A is circular, and its diameter in a plan view is larger than the diameter of the lens 131A. 【0053】 The opposing surface 121A is concave in a mortar shape and is annular in plan view. The opposing surface 121A is the surface that faces the main surface 11A on the indoor side of the window glass 11 through the opening 120A, the through hole 110A of the first hood 110, and the opening of the double-sided tape 115. When the second hood 120 is attached to the first hood 110, the opposing surface 121A overlaps with the through hole 110A in plan view. The opposing surface 121A has a recessed depth such that, as an example, the lens 131A does not protrude in the -Z direction beyond the -Z direction end of the second hood 120 (the outermost radial edge of the opposing surface 121A) in the Z direction. This is to prevent the lens 131A from contacting the main surface 11A on the indoor side of the window glass 11. 【0054】The opposing surface 121A has a concave shape that extends from its outer edge toward the opening 120A, so as not to be included within the field of view of the camera body 130 through the lens 131A. This concave shape of the opposing surface 121A prevents it from appearing in the image captured by the imaging device 100. The opposing surface 121A functions as a lens hood. 【0055】 The back surface 121B is located on the opposite side from the opposing surface 121A and is an annular surface facing the +Z direction. The back surface 121B is, for example, a flat surface parallel to the XY plane. An opening 120A is located in the center of the back surface 121B. A steel plate 123 is attached to the back surface 121B. 【0056】 The second thread engagement portion 122 is a threaded portion formed on the outer circumferential surface of the annular second hood 120. The outer diameter of the second hood 120 is matched to the inner diameter of the through hole 110A of the first hood 110, and the second thread engagement portion 122 is inserted into the first thread engagement portion 112A from the +Z direction side and screwed in, so that it enters the inside of the first thread engagement portion 112A toward the -Z direction. The threaded portion of the first thread engagement portion 112A is configured so that the second hood 120 does not protrude toward the -Z direction beyond the surface 111A of the first hood 110. 【0057】 The length of the second screw engagement portion 122 of the second hood 120 in the Z direction is longer than the length of the first screw engagement portion 112A of the first hood 110 in the Z direction. When the second screw engagement portion 122 of the second hood 120 is fully inserted into the first screw engagement portion 112A of the first hood 110, as shown in Figure 1C as an example, a portion of the second screw engagement portion 122 on the +Z direction side is positioned on the +Z direction side of the protrusion 112 of the first hood 110. 【0058】The steel plate 123 is an annular member attached to the back surface 121B. For example, it is made of iron, but it may also be made of a magnetic metal such as nickel. The steel plate 123 is provided to enable the magnetic portion 153 of the second holding portion 150 to be fixed by magnetic attraction. The steel plate 123 shown in Figure 1B is annular in shape to avoid the opening 120A, but it may have any shape and size as long as it has an area on which the magnetic portion 153 can be magnetically attracted. 【0059】 When the second retaining part 150, which holds the first retaining part 140, is attached to the second hood 120, the lens 131A is positioned inside the opening 120A. By adjusting the angle of the first retaining part 140 relative to the second retaining part 150, the orientation of the camera body 130 can be changed. As the orientation of the camera body 130 changes, the orientation of the lens 131A changes, and therefore the range captured by the camera body 130 changes. 【0060】 Thus, in order to prevent the lens 131A from hitting the opening 120A when changing the orientation of the camera body 130, the opening 120A may be shaped like a mortar, with the opening diameter increasing from the boundary with the opposing surface 121A toward the rear surface 121B. 【0061】 <Camera body 130> The camera body 130 includes a lens housing 131, a lens 131A, and a circuit board 132. The camera body 130 is, for example, a board camera. An imaging unit (not shown) is mounted on the circuit board 132, and the lens housing 131 is attached to the -Z side of the imaging unit. The imaging unit has an image sensor. A lens 131A is provided at the -Z end of the lens housing 131. 【0062】The camera body 130 is a camera capable of capturing digital images of both video and still images, and as an example, includes an image sensor using a CMOS (Complementary Metal Oxide Semiconductor) or CCD (Charge Coupled Device) as the image sensor. The camera body 130 is a digital camera implemented as an example using a board camera. 【0063】 Through holes are provided at the four corners of the substrate 132, penetrating the substrate 132 in the Z direction, through which screws 132A are inserted. For example, the substrate 132 has four through holes and is fixed to the first retaining part 140 by four screws 132A. 【0064】 The camera body 130 is attached to the first retaining part 140 by screwing a screw 132A, which is passed through a through hole in the circuit board 132 from the -Z direction side, into the screw hole 142A of the first retaining part 140. 【0065】 The camera body 130 may or may not have a telephoto function. If the camera body 130 does not have a telephoto function, the camera body 130 can be made inexpensively, and the imaging device 100 can be manufactured at a low cost. The camera body 130 is connected to the processing device via a cable (not shown) as an example. Alternatively, the camera body 130 may be connected to the processing device in a data communication manner by wireless communication via a wireless communication unit. The wireless communication unit may be located inside or outside the camera body 130. 【0066】<First Holding Part 140> The first holding part 140 is, for example, a member having a hollow, hemispherical shape. The first holding part 140 has an outer surface 141, an inner surface 142, a screw hole 142A, and an opening 143. The opening 143 is located at the boundary between the outer surface 141 and the inner surface 142 of the first holding part 140, which has a hollow, hemispherical shape. Here, we will use a central axis C that passes through the center of the opening 143 and the vertex of the hemispherical outer surface for explanation. When describing the configuration of the first holding part 140 here, unless otherwise specified, the angle of the first holding part 140 is set to an angle in which the central axis C is parallel to the Z axis. 【0067】 The outer surface 141 is a spherically curved surface. The first retaining part 140 is held by the second retaining part 150 when the screw 152 of the second retaining part 150 engages with the outer surface 141. Furthermore, because the outer surface 141 of the first retaining part 140 is spherically curved, even if the angle of the first retaining part 140 relative to the second retaining part 150 is changed so that the orientation of the central axis C changes while the position of the center of the opening 143 is fixed, the outer surface 141 will move on a virtual sphere including the hemispherical shape of the first retaining part 140. The angle of the first retaining part 140 relative to the second retaining part 150 can be adjusted by changing the position in which the outer surface 141 of the first retaining part 140 engages with the screw 152 of the second retaining part 150. 【0068】 The inner surface 142 is located on the back side of the outer surface 141 and is curved spherically in correspondence with the outer surface 141. Screw holes 142A are provided in the portion of the inner surface 142 near the opening 143. There are four screw holes 142A, corresponding to the four screws 132A of the camera body 130, and the camera body 130 is attached to the first holding part 140 when the screws 132A are engaged. In the Z direction, the screw holes 142A are offset to the +Z direction side of the opening 143, and when the camera body 130 is attached to the first holding part 140, the substrate 132 is housed inside the first holding part 140, and the lens housing 131 protrudes to the -Z direction side of the opening 143. 【0069】<Second Holding Part 150> The second holding part 150 is an annular member and has a through hole 151, a screw hole 151A, a screw 152, and a magnet part 153. Here, as an example, a configuration in which the second holding part 150 is an annular member will be described, but the second holding part 150 only needs to have a circular through hole 151 in plan view, and its outer shape in plan view does not have to be circular. 【0070】 The through-hole 151 penetrates the central part of the second holding portion 150 in the Z direction when viewed from above, and is circular in shape when viewed from above. The through-hole 151 is the portion surrounded by the inner circumferential surface of the annular second holding portion 150. The diameter of the through-hole 151 is slightly larger than the diameter of the first holding portion 140 when viewed from above, and the first holding portion 140 can be accommodated inside the through-hole 151. 【0071】 The second retaining portion 150 has four screw holes 151A that penetrate between the outer and inner circumferential surfaces. The four screw holes 151A are, for example, provided at equal intervals in the circumferential direction of the second retaining portion 150. 【0072】 Four screws 152 are provided, corresponding to the screw holes 151A, and are inserted into each screw hole 151A from the outer circumferential surface side. With the first retaining part 140 positioned inside the through hole 151 of the second retaining part 150, the four screws 152 can be screwed to the outer surface 141 of the first retaining part 140 to fix the first retaining part 140 to the second retaining part 150. For example, the screws 152 are hexagon socket set screws. If hexagon socket set screws are used as screws 152, the screws 152 can be completely housed in the screw holes 151A when screwed to the outer surface 141 of the first retaining part 140, so that the screws 152 do not protrude from the outer circumferential surface of the second retaining part 150. 【0073】 When screwing the screw 152 to the outer surface 141, the orientation of the lens 131A can be changed by fixing the position of the center of the opening 143 of the first retaining part 140 and changing the angle of the first retaining part 140 relative to the second retaining part 150 so that the angle of the central axis C changes. 【0074】Therefore, the screw hole 151A and screw 152 of the second holding portion 150 are an angle adjustment mechanism that allows adjustment of the angle of the first holding portion 140 relative to the second holding portion 150. 【0075】 An annular magnetic portion 153 is provided on the annular surface of the second holding portion 150 on the -Z direction side. The magnetic portion 153 is, for example, a rubber magnet and has adhesive tape attached to it. The magnetic portion 153 is bonded to the annular surface of the second holding portion 150 on the -Z direction side. The rubber magnet is, for example, a sheet-shaped magnet made by mixing a permanent magnet with a rubber-based material. The permanent magnet is preferably one with strong magnetic attraction force, such as a neodymium magnet. 【0076】 With the camera body 130 attached to the first holding part 140 and the second holding part 150 holding the first holding part 140, the magnetic part 153 can be magnetically attracted to the steel plate 123 of the second hood 120, thereby allowing the camera body 130, the first holding part 140, and the second holding part 150 to be attached to the second hood 120. 【0077】 The imaging device 100 can be attached to the window glass 11 by screwing the second screw engagement portion 122 of the second hood 120, to which the camera body 130, the first holding portion 140, and the second holding portion 150 are attached, to the first screw engagement portion 112A of the first hood 110, which is attached to the main surface 11A on the indoor side of the window glass 11. 【0078】 Here, we will describe a configuration in which the second retaining part 150 has four screw holes 151A and the first retaining part 140 is fixed with four screws 152. However, at least three screw holes 151A are sufficient. This is because at least three screws 152 are sufficient to hold the outer surface 141 of the first retaining part 140. 【0079】 Furthermore, the inner circumferential surface of the second retaining portion 150 may have a curved shape corresponding to the surface of the first retaining portion 140. By curving the inner circumferential surface of the second retaining portion 150 into a spherical shape, the screw 152 can more easily engage with the outer surface 141 of the first retaining portion 140, allowing the second retaining portion 150 to hold the first retaining portion 140 more stably. 【0080】Furthermore, although a configuration in which the second holding part 150 has a magnetic part 153 and the second hood 120 has a steel plate 123 has been described here, the reverse is also possible. That is, the second holding part 150 may have a steel plate and the second hood 120 may have a magnetic part. 【0081】 Furthermore, although a configuration in which the second holding part 150 has an angle adjustment mechanism that can adjust the angle of the first holding part 140 relative to the second holding part 150 has been described, the second holding part 150 does not necessarily have an angle adjustment function. For example, when the camera body 130 is used to capture an image in a predetermined direction, the second holding part 150 does not necessarily have an angle adjustment function. In such cases, the second holding part 150 may be integrally configured with the first holding part 140. Such a first holding part 140 and second holding part 150 are just examples of holding parts. 【0082】 As an example, the imaging device 100 is placed on the main surface 11A on the indoor side of the window glass 11. Placing it on the main surface 11A on the indoor side of the window glass 11 makes it less visible and inconspicuous to an unspecified number of people outside the window glass 11. Also, a certain height for mounting the imaging device 100 allows for imaging of a wider area. Alternatively, the imaging device 100 may be mounted on the upper corner of the window frame 12. 【0083】 As shown in Figures 1A and 1C, when the imaging device 100 is attached to the main surface 11A on the indoor side of the window glass 11, the visible components are the first hood 110, the second hood 120, the lens 131A, the first holding part 140, and the second holding part 150. 【0084】 Of these components, the first hood 110 is the most visible from the outside of the window glass 11. Because the first hood 110 is circular in plan view, even if it is slightly misaligned in the direction of rotation relative to the intended angle when attached to the main surface on the inside of the window glass 11, it is possible to prevent it from looking unsightly. For this reason, the imaging device 100, including the circular first hood 110 in plan view, has a good appearance and high design quality. 【0085】The first hood 110 does not have to be circular in plan view. Figure 2 shows an example of the configuration of an imaging device 100 of a modified embodiment. The imaging device 100 shown in Figure 2 differs from the imaging device 100 shown in Figures 1A to 1C in that the first hood 110 is triangular in plan view. The other configurations of the imaging device 100 shown in Figure 2 are the same as those of the imaging device 100 shown in Figures 1A to 1C. Note that in Figure 2, the second hood 120, the first holding part 140, and the second holding part 150 are not visible due to the angle. 【0086】 As an example, when the imaging device 100 shown in Figure 2 is positioned at the upper corner of the window frame 12 on the main surface 11A on the indoor side of the window glass 11, it is preferable to attach the first hood 110 to the main surface 11A on the indoor side of the window glass 11 such that, in a plan view, the two sides of the triangular first hood 110 other than the hypotenuse are parallel to the frame portions 12X and 12Y of the window frame 12. 【0087】 This is because, in a plan view, if the two sides of the triangular first hood 110, other than the hypotenuse, are parallel to the frame portions 12X and 12Y of the window frame 12, it looks good and has a high design quality. In addition, the upper corner of the window frame 12 is less visible to a large number of people from the outside and is less conspicuous, making it a suitable location for installing the imaging device 100 used as a surveillance camera. 【0088】 The first hood 110 may also be rectangular in shape when viewed from above. The first hood 110, if rectangular in shape when viewed from above, should be attached to the main surface 11A on the indoor side of the window glass 11 such that two adjacent sides of the rectangular first hood 110 are parallel to the frame portions 12X and 12Y of the window frame 12. This is because, similar to the imaging device 100 having a triangular first hood 110 in shape when viewed from above, it will look good and have a high level of design appeal. 【0089】 Alternatively, a filter 125 may be provided on the second hood 120. Figures 3A and 3B show an example of the configuration of the second hood 120 with the filter 125 attached. Figures 3A and 3B show the second hood 120 with the filter 125 attached, but in order to show the shape of the filter 125 itself, the filter 125 is shown separately from the filter 125 attached to the second hood 120. 【0090】The second hood 120 shown in Figure 3A is provided with a filter 125 on the back surface 121B side so as to cover the opening 120A. The filter 125 is a thin disc shape and has the same diameter as the opening diameter at the -Z direction end of the opening 120A. Also, the surface of the filter 125 on the +Z direction side is flush with the back surface 121B, for example. 【0091】 The second hood 120 shown in Figure 3B is provided with a filter 125 that covers the opposing surface 121A. The filter 125 is a thin disc shape and has the same diameter as the end of the opposing surface 121A on the -Z direction side. 【0092】 Filter 125 is a filter that reduces the incidence of reflected light. For example, when sunlight hits the imaging device 100, light reflected by the first hood 110 and the second hood 120 may be included in the image, or reflections may occur, so filter 125 is used. 【0093】 Furthermore, the above description has described a configuration in which the first hood 110 has a first screw engagement portion 112A, the second hood 120 has a second screw engagement portion 122, and the second hood 120 is attached to the first hood 110 by the engagement of the first screw engagement portion 112A and the second screw engagement portion 122. However, the configuration for attaching the second hood 120 to the first hood 110 is not limited to this configuration. For example, the second hood 120 may have a plurality of claw portions provided on its outer circumferential surface, and the first hood 110 may have a plurality of claw receiving portions that receive the plurality of claw portions of the second hood 120, thereby attaching the second hood 120 to the first hood 110. In this case, the plurality of claw receiving portions of the first hood 110 are an example of a first engagement portion, and the plurality of claw portions of the second hood 120 are an example of a second engagement portion. Conversely, the first hood 110 may have a plurality of claw portions, and the second hood 120 may have claw receiving portions. 【0094】<Effects> The imaging device 100 of this disclosure includes a first hood 110 fixed to the main surface 11A on the indoor side of the window glass 11 of a building 1, a second hood 120 detachably attached to the first hood 110, and a camera body 130 capable of imaging the outdoor side of the window glass 11 via a lens 131A, the camera body 130 being attached to the second hood 120. The first hood 110 has a through hole 110A that exposes the lens 131A, a notch that exposes the lens 131A, or a transparent portion that is transparent to at least the front portion of the lens 131A. For this reason, the second hood 120 to which the camera body 130 is attached is detachably attached to the first hood 110. 【0095】 Therefore, an imaging device 100 that can be easily attached to and detached from the window glass 11 can be provided. 【0096】 When the second hood 120 is removed from the first hood 110, the first hood 110 remains on the window glass 11, while the second hood 120, camera body 130, first holder 140, and second holder 150 are removed from the window glass 11. The imaging device 100 being detachable from the window glass 11 means that, in this way, the first hood 110 remains on the window glass 11, while the second hood 120, camera body 130, first holder 140, and second holder 150 are removed from the window glass 11. The first hood 11 remaining on the window glass 11 can be removed from the window glass 11, for example, by using a solvent. 【0097】 Furthermore, the first hood 110 may have a first screw engagement portion 112A, and the second hood 120 may have a second screw engagement portion 122 that is engageable with the first screw engagement portion 112A and detachably attached to the first screw engagement portion 112A. The detachable engagement of the first screw engagement portion 112A and the second screw engagement portion 122 makes it possible to easily attach the second hood 120, to which the camera body 130 is attached, to the first hood 110. In addition, when the second hood 120, to which the camera body 130 is attached, is removed from the first hood 110 and then reattached to the first hood 110, the camera body 130 can be attached in the same position and direction as before removal, thus enabling stable imaging over a long period of time. 【0098】 Furthermore, the first hood 110 has a first engaging portion, and the second hood 120 has a second engaging portion that is engageable with the first engaging portion and detachable from the first engaging portion. One of the first and second engaging portions may have a claw portion, and the other of the first and second engaging portions may have a claw receiving portion that is engageable with the claw portion and detachable from the claw portion. Because the first and second engaging portions are detachably engaged, the second hood 120 to which the camera body 130 is attached can be easily attached to the first hood 110. Also, when the second hood 120 to which the camera body 130 is attached is removed from the first hood 110 and then reattached to the first hood 110, the camera body 130 can be attached in the same position and direction as before removal, enabling stable imaging over a long period of time. 【0099】 Furthermore, the design may include holding parts (140, 150) that hold the camera body 130 relative to the second hood 120, and the camera body 130 may be attached to the second hood 120 while being held relative to the second hood 120 by the holding parts (140, 150). The camera body 130 can be easily attached to the second hood 120. Also, having the second hood 120 and the holding parts as separate components makes it easier to design the second hood 120 and the holding parts. 【0100】 Furthermore, the holding portion (140, 150) may have a magnetic portion 153, and the second hood 120 may have a magnetic metal portion (steel plate 123) that can be magnetically attracted to the magnetic portion 153, or the second hood 120 may have a magnetic portion, and the holding portion (140, 150) may have a magnetic metal portion that can be magnetically attracted to the magnetic portion. The holding portion 150 can be easily attached to the second hood 120 by utilizing the magnetic attraction force of the magnetic portion and the magnetic metal portion. 【0101】Furthermore, the holding portion (140, 150) includes a first holding portion 140 that holds the camera body 130 and a second holding portion 150 that holds the first holding portion 140 relative to the second hood 120. The second holding portion 150 may have an angle adjustment mechanism that allows adjustment of the angle of the first holding portion 140 relative to the second holding portion 150, so that the orientation of the lens 131A of the camera body 130 held by the first holding portion 140 can be adjusted. The second holding portion 150 that holds the first holding portion 140 relative to the second hood 120 has an adjustable angle adjustment mechanism, which allows the direction of the lens 131A of the camera body 130 to be freely changed, and enables the camera body 130 to capture images in various directions when attached to the main surface 11A on the indoor side of the window glass 11. 【0102】 Furthermore, the second holding portion 150 has an annular shape that encloses the first holding portion 140, and the surface of the first holding portion 140 that is held by the second holding portion 150 may have a spherically curved surface. Since the first holding portion 140 has a spherically curved surface, a configuration can be realized that makes it easy to adjust the angle with respect to the second holding portion 150 while it is enclosed in the second holding portion 150. 【0103】 Furthermore, the second retaining portion 150 may have an inner circumferential surface located on the inner side of the annular shape, and may have an inner circumferential surface that is curved in accordance with the surface of the first retaining portion 140. By curving the inner circumferential surface of the second retaining portion 150 into a spherical shape, the screw 152 can more easily engage with the outer surface 141 of the first retaining portion 140, and the second retaining portion 150 can hold the first retaining portion 140 more stably. 【0104】Furthermore, the second hood 120 has an opening 120A that exposes the lens 131A, and an opposing surface 121A that surrounds the opening 120A and faces the main surface 11A on the indoor side of the window glass 11. The opposing surface 121A has a concave shape that is recessed in a mortar shape from its outer edge toward the opening 120A, and in a plan view, the opposing surface 121A may overlap with the through hole 110A, notch, or transparent portion of the first hood 110. Because the opposing surface 121A has a concave shape that is recessed in a mortar shape from its outer edge toward the opening 120A, it functions as a lens hood, so that the opposing surface 121A does not appear in the image captured by the imaging device 100, and a clear image with reduced reflections can be obtained. 【0105】 Furthermore, a filter 125 may be included to cover the opening 120A of the second hood 120 and reduce the incidence of reflected light. This reduces the effect of reflected light and allows for a clearer image. 【0106】 Furthermore, the first hood 110 may be circular in plan view. When attaching it to the main surface 11A on the indoor side of the window glass 11, even if it is slightly misaligned in the direction of rotation relative to the angle at which it was originally intended to be attached, it is possible to suppress any deterioration in appearance. For this reason, the imaging device 100 including the first hood 110, which is circular in plan view, has a good appearance and high design quality. 【0107】 The window glass with imaging device 200 of this disclosure includes a window glass 11 of a building 1 and an imaging device 100 provided on the indoor side of the window glass 11. The imaging device 100 includes a first hood 110 fixed to the main indoor surface 11A of the window glass 11, a second hood 120 detachably attached to the first hood 110, and a camera body 130 capable of imaging the outdoor side of the window glass 11 via a lens 131A, which is attached to the second hood 120. The first hood 110 has a through hole 110A that exposes the lens 131A, a notch that exposes the lens 131A, or a transparent portion that is transparent to at least the front portion of the lens 131A. Therefore, the second hood 120 to which the camera body 130 is attached is detachably attached to the first hood 110. 【0108】 Therefore, a window glass 200 with an imaging device that can be easily attached to and detached from the window glass 11 can be provided. 【0109】 While exemplary imaging devices and window glass with imaging devices have been described above, this disclosure is not limited to the specifically disclosed embodiments, and various modifications and changes are possible without departing from the scope of the claims. 【0110】The following additional notes are disclosed with respect to the above embodiments. (Note 1) An imaging device comprising: a first hood fixed to the main indoor surface of a windowpane of a building; a second hood detachably attached to the first hood; and a camera body capable of imaging the outdoor side of the windowpane through a lens, the camera body being attached to the second hood, wherein the first hood has a through hole for exposing the lens, a notch for exposing the lens, or a transparent portion that is transparent to at least the front portion of the lens. (Note 2) The imaging device according to Note 1, wherein the first hood has a first screw engagement portion, and the second hood has a second screw engagement portion that is engageable with the first screw engagement portion and detachably attached to the first screw engagement portion. (Note 3) The imaging device according to Note 1, wherein the first hood has a first engaging portion, the second hood has a second engaging portion that is engageable with the first engaging portion and detachable from the first engaging portion, one of the first engaging portion and the second engaging portion has a claw portion, and the other of the first engaging portion and the second engaging portion has a claw receiving portion that is engageable with the claw portion and detachable from the claw portion. (Note 4) The imaging device according to any one of Notes 1 to 3, further comprising a holding portion for holding the camera body with respect to the second hood, the camera body being attached to the second hood while being held with respect to the second hood by the holding portion. (Note 5) The imaging device according to Note 4, wherein the holding portion has a magnet portion, the second hood has a magnetic metal portion that can be magnetically attracted to the magnet portion, or the second hood has a magnet portion, and the holding portion has a magnetic metal portion that can be magnetically attracted to the magnet portion. (Note 6) The imaging device according to Note 4, wherein the holding portion comprises a first holding portion for holding the camera body and a second holding portion for holding the first holding portion relative to the second hood, and the second holding portion has an angle adjustment mechanism that can adjust the angle of the first holding portion relative to the second holding portion so that the orientation of the lens of the camera body held by the first holding portion can be adjusted.(Note 7) The imaging device according to Note 6, wherein the second holding portion has an annular shape encompassing the first holding portion, and the first holding portion has a spherically curved surface that is held by the second holding portion. (Note 8) The imaging device according to Note 7, wherein the second holding portion has an inner circumferential surface located on the inner circumference side of the annular shape, and has an inner circumferential surface that is curved in correspondence with the surface of the first holding portion. (Note 9) The imaging device according to any one of Notes 1 to 8, wherein the second hood has an opening that exposes the lens and a facing surface that faces the main surface on the indoor side of the window glass, the facing surface has a concave shape that is recessed in a mortar shape from the outer edge toward the opening, and the facing surface overlaps with the through hole, the notch, or the transparent portion of the first hood in a plan view. (Note 10) The imaging device according to Note 9, further comprising a filter that covers the opening of the second hood and reduces the incidence of reflected light. (Note 11) The imaging device according to any one of Notes 1 to 10, wherein the first hood is circular in plan view. (Note 12) A window glass with an imaging device, comprising a window glass of a building and an imaging device provided on the indoor side of the window glass, wherein the imaging device comprises a first hood fixed to the main indoor surface of the window glass, a second hood detachably attached to the first hood, and a camera body capable of imaging the outdoor side of the window glass via a lens, and attached to the second hood, wherein the first hood has a through hole for exposing the lens, a notch for exposing the lens, or a transparent portion that is transparent at least to the front portion of the lens. 【0111】 Furthermore, the disclosure of Japanese Patent Application No. 2024-209378, filed on December 2, 2024, is incorporated herein by reference in its entirety. All documents, patent applications, and technical standards described herein are incorporated herein by reference to the same extent as if the incorporation of each individual document, patent application, and technical standard were specifically and individually stated. 【0112】1 Building (Example of a structure) 1W Wall 10 Window 11 Window glass 11A Main surface 12 Window frame 12X, 12Y Frame part 100 Imaging device 110 First hood 110A Through hole 111 Base part 111A, 111B Surface 112 Protrusion 112A First screw engagement part 115 Double-sided tape 120 Second hood 120A Opening 121A Opposing surface 121B Back surface 122 Second screw engagement part 123 Steel plate (Example of a magnetic metal part) 125 Filter 130 Camera body 131 Lens housing 131A Lens 132 Substrate 140 First holding part 141 Outer surface 142 Inner surface 142A Hole 143 Opening 150 Second holding part 151 Through hole 151A, threaded hole 153, magnet section 200, window glass with imaging device.

Claims

1. An imaging device comprising: a first hood fixed to the main indoor surface of a windowpane of a building; a second hood detachably attached to the first hood; and a camera body capable of imaging the outdoor side of the windowpane via a lens, the camera body being attached to the second hood, wherein the first hood has a through hole for exposing the lens, a notch for exposing the lens, or a transparent portion that is transparent to at least the front portion of the lens.

2. The imaging apparatus according to claim 1, wherein the first hood has a first screw engagement portion, and the second hood has a second screw engagement portion that is engageable with the first screw engagement portion and detachable from the first screw engagement portion.

3. The imaging device according to claim 1, wherein the first hood has a first engaging portion, the second hood has a second engaging portion that is engageable with the first engaging portion and detachable from the first engaging portion, one of the first engaging portion and the second engaging portion has a claw portion, and the other of the first engaging portion and the second engaging portion has a claw receiving portion that is engageable with the claw portion and detachable from the claw portion.

4. The imaging device according to claim 1, further comprising a holding portion for holding the camera body relative to the second hood, wherein the camera body is attached to the second hood while being held relative to the second hood by the holding portion.

5. The imaging apparatus according to claim 4, wherein the holding portion has a magnetic portion, and the second hood has a magnetic metal portion that can be magnetically attracted to the magnetic portion, or the second hood has a magnetic portion, and the holding portion has a magnetic metal portion that can be magnetically attracted to the magnetic portion.

6. The imaging device according to claim 4, wherein the holding portion comprises a first holding portion for holding the camera body and a second holding portion for holding the first holding portion relative to the second hood, and the second holding portion has an angle adjustment mechanism that can adjust the angle of the first holding portion relative to the second holding portion so that the orientation of the lens of the camera body held by the first holding portion can be adjusted.

7. The imaging apparatus according to claim 6, wherein the second holding portion has an annular shape encompassing the first holding portion, and the first holding portion has a surface held by the second holding portion that is curved in a spherical shape.

8. The imaging apparatus according to claim 7, wherein the second holding portion is an inner circumferential surface located on the inner circumference side of the annular shape and has an inner circumferential surface that is curved in correspondence with the surface of the first holding portion.

9. The imaging device according to claim 1, wherein the second hood has an opening for exposing the lens and an opposing surface facing the main surface on the indoor side of the window glass, the opposing surface has a concave shape that is recessed in a mortar shape from the outer edge toward the opening, and the opposing surface overlaps with the through hole, the notch, or the transparent portion of the first hood in a plan view.

10. The imaging apparatus according to claim 9, further comprising a filter that covers the opening of the second hood and reduces the incidence of reflected light.

11. The imaging apparatus according to claim 1, wherein the first hood is circular in plan view.

12. A window glass with an imaging device, comprising a window glass of a building and an imaging device provided on the indoor side of the window glass, wherein the imaging device comprises a first hood fixed to the main indoor surface of the window glass, a second hood detachably attached to the first hood, and a camera body capable of imaging the outdoor side of the window glass via a lens, and attached to the second hood, wherein the first hood has a through hole for exposing the lens, a notch for exposing the lens, or a transparent portion that is transparent at least to the front portion of the lens.

Images