Imaging device, display system, and vehicle

Abstract

The imaging body includes a heating body, a lens unit, a heat transfer body, and a first heat transfer plate. The heat transfer body is arranged between the heating body and the lens unit. Heat is transferred from the heating body to the heat transfer body. The first heat transfer plate is provided between the lens unit and the heat transfer body. The first heat transfer plate is in contact with the heat transfer body on one main surface side, and is in contact with the lens unit on the other main surface side. A first contact area between the first heat transfer plate and the heat transfer body is larger than a second contact area between the first heat transfer plate and the lens unit.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit of priority based on Japanese Patent Application No. 2022-089758 filed in Japan on June 1, 2022, and the entire disclosure of the prior application is incorporated herein by reference. Technical Field

[0003] The invention relates to a photographing device, a display system and a vehicle. Background Art

[0004] There is known an imaging device including a heating element and a lens unit (see Patent Document 1).

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Publication No. 2005-64591. Summary of the invention

[0008] In one embodiment, the imaging device includes: a heating element; a lens unit; a heat transfer element disposed between the heating element and the lens unit to transfer heat from the heating element; and a first heat transfer plate disposed between the lens unit and the heat transfer element, in contact with the heat transfer element on one main surface side and in contact with the lens unit on the other main surface side. A first contact area between the first heat transfer plate and the heat transfer element is greater than a second contact area between the first heat transfer plate and the lens unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a cross-sectional view of the imaging device according to the first embodiment.

[0010] Figure 2 It is a plan view of the display system and the vehicle according to the first embodiment.

[0011] Figure 3 yes Figure 1 Enlarged view of region R in the middle.

[0012] Figure 4 yes Figure 1 FIG. 1 is a diagram showing an example of a first heat transfer plate viewed from a heat transfer body.

[0013] Figure 5 yes Figure 1 FIG. 4 is a diagram showing another example of observing the first heat transfer plate from the heat transfer body.

[0014] Figure 6 yes Figure 1 FIG. 4 is a diagram showing still another example of the first heat transfer plate as viewed from the heat transfer body.

[0015] Figure 7 It is a partially enlarged view showing the fourth convex portion of the imaging device according to the first embodiment.

[0016] Figure 8 This is a perspective view showing an example of a first heat transfer plate of the imaging device according to the first embodiment.

[0017] Fig. 9 This is a partially enlarged view showing an example of the concave portion and the second convex portion of the imaging device according to the first embodiment.

[0018] Fig.10 This is a partially enlarged view showing an example of a third convex portion of the imaging device according to the first embodiment.

[0019] Fig.11 It is a partially enlarged view of a photographing device according to another embodiment.

[0020] Fig.12 It is a partially enlarged view of a photographing device according to yet another embodiment.

[0021] Fig.13 It is a partially enlarged view of a photographing device according to yet another embodiment. DETAILED DESCRIPTION

[0022] Hereinafter, embodiments of an imaging device to which the present invention is applied will be described with reference to the drawings.

[0023] Figure 1 1 is a cross-sectional view of the camera device of the first embodiment. The camera device 100 is, for example, a vehicle-mounted camera. The camera device 100 may be mounted on a vehicle 300 together with a display device 200 (see FIG. 1 ). Figure 2 ). For example, the camera 100 may be fixed to a rearview mirror of the vehicle 300, etc., to capture a peripheral image of the rear view. The display device 200 may be arranged to be visible from the driver's seat. The camera 100 and the display device 200 may constitute a display system.

[0024] The photographing device 100 is configured to include a lens unit 10, a heat generating body 20, a heat transfer body 30, and a heat transfer plate (first heat transfer plate) 40. The photographing device 100 may further include a second heat transfer plate 60.

[0025] Below, parallel to Figure 1 The optical axis OA of the lens unit 10 is denoted by the optical axis OA, and the direction from the imaging device 100 toward the subject (the direction indicated by the arrow of the optical axis OA) is described as the direction from “rear” to “front”.

[0026] The lens unit 10 may have a photographing optical system 11 and a lens barrel 12 .

[0027] The photographing optical system 11 can image the subject image within the photographing field of view onto the photographing element 21. The photographing optical system 11 may include at least one optical element. The photographing optical system 11 is designed to satisfy the desired optical characteristics such as focal length and focal depth. The optical element may include a lens, an aperture, a reflector, etc.

[0028] The lens barrel 12 may be cylindrical. The lens barrel 12 may accommodate the shooting optical system 11 in a retaining hole 12h defined by the inner circumference of the cylindrical shape of the lens barrel 12. An annular retaining portion 11s for fixing the shooting optical system 11 may be formed at the rear edge of the lens barrel 12. The lens barrel 12 may retain the shooting optical system 11 so that the optical axis OA of the shooting optical system 11 passes through the center of an opening 12o defined by the ring of the retaining portion 11s. The light beam incident on the shooting optical system 11 may pass through the opening 12o. The lens barrel 12 may be a resin member.

[0029] The heating element 20 may be a structure that generates heat directly or indirectly due to the driving of the camera 100. The heating element 20 may include, for example, an electronic component 23 and a substrate 22 on which the electronic component 23 is mounted. The heating element 20 may include, for example, a camera element 21. The mounting height of the electronic component 23 on the substrate 22 may vary depending on the type of the electronic component 23.

[0030] The imaging element 21 can be arranged behind the lens unit 10. The imaging element 21 can capture the subject image formed on the light receiving surface through the lens unit 10, and convert it into an electrical signal for output. The imaging element 21 can use, for example, a CCD (Charge Coupled Device), a CMOS (Complementary Metal Oxide Semiconductor) image sensor, etc. The imaging device 100 can transmit an image signal based on the electrical signal from the imaging element 21 to a device outside the imaging device 100 such as a display device. The image signal can be the electrical signal itself output from the imaging element 21, or it can be a signal after the electronic component 23 has performed necessary image processing.

[0031] The electronic component 23 can be mounted on the substrate 22. The substrate 22 can be one or more. By using a plurality of substrates, it is easy to meet the size restrictions so that they can be accommodated inside the camera 100. The electronic component 23 can be, for example, a component for driving the camera element 21, signal processing of image signals, etc.

[0032] The heat transfer body 30 is provided between the heating body 20 and the lens unit 10. Heat is transferred from the heating body 20 to the heat transfer body 30. The heat transfer body 30 may include an opening 30o (first opening). The heat transfer body 30 may be in contact with the heating body 20 at the end (inner circumferential surface) of the first opening 30o. The heat transfer body 30 is arranged in the imaging device 100 so that the optical axis OA of the imaging optical system 11 is located in the first opening 30o. The light beam incident on the imaging optical system 11 may pass through the first opening 30o. The heat transfer body 30 may be a solid or a liquid. The heat transfer body 30 may be a solid having elasticity. In the following description, unless otherwise specified, the heat transfer body 30 is a solid having elasticity. The heat transfer body 30 may be a highly thermally conductive resin such as silicone resin. The heat transfer body 30 may be a highly thermally conductive resin of a carbon series. By applying a highly thermally conductive resin of a carbon series to the heat transfer body 30, the thermal conductivity of the heat transfer body 30 in the in-plane direction may be higher than the thermal conductivity in the thickness direction.

[0033] The heat transfer plate 40 is disposed between the lens unit 10 and the heat transfer body 30. Compared with the heat transfer body 30, the heat transfer plate 40 may be made of a material having higher heat conductivity, for example, it may include metals such as aluminum, nickel silver, and copper. By using metal in the heat transfer plate 40, electromagnetic interference (Electromagnetic Interference) can be reduced. By using metal in the heat transfer plate 40, electromagnetic compatibility (Electromagnetic Compatibility) can be improved.

[0034] Alternatively, the heat transfer plate 40 may be made of a solid material having elasticity. The heat transfer plate 40 may be made of a highly thermally conductive resin such as silicone resin, for example. By resin molding the heat transfer plate 40, a heat transfer plate 40 having a complex shape can be easily manufactured.

[0035] The heat transfer plate 40 may include a main body 40m and a top end 40t. The top end 40t may be continuous on at least a portion of the outer edge of the main body 40m. The top end 40t may be formed by bending in one direction of the main surface of the main body 40m. In the present application specification, the main surface refers to the surface with the largest area in the plate as a rectangular parallelepiped. As described later, although a convex portion or a concave portion may be provided on the main body 40m, in a structure including a surface formed with concave and convex portions, the main surface refers to the surface with the largest area when the concave and convex portions on the surface are regarded as a plane on a macroscopic scale. The main body 40m may have an opening (second opening) 40o near the center.

[0036] The heat transfer plate 40 may be disposed in the imaging device 100 such that the main surface of the main body 40m (eg, the main surface 40b) is perpendicular to the optical axis OA of the imaging optical system 11. The heat transfer plate 40 may be disposed in the imaging device 100 such that the tip 40t faces the lens unit 10 side.

[0037] When viewed from the direction along the optical axis OA, the heat transfer plate 40 may extend to the outside of the lens unit 10 in the imaging device 100. More specifically, at least a portion of the outer edge of the main body 40m of the heat transfer plate 40 may extend to the outside of the lens unit 10 in the imaging device 100. The second opening 40o of the heat transfer plate 40 may be coaxial with the first opening 30o of the heat transfer body 30 in the imaging device 100. With such a structure, the light beam incident on the imaging optical system 11 may pass through the second opening 40o.

[0038] The heat transfer plate 40 may be in contact with the heat transfer body 30 on the main surface 40a side of one side. The heat transfer plate 40 may be in contact with the lens unit 10 on the main surface 40b side of the other side. More specifically, the heat transfer plate 40 may be in contact with the lens barrel 12 in the lens unit 10. The first contact area between the heat transfer plate 40 and the heat transfer body 30 is greater than the second contact area between the heat transfer plate 40 and the lens unit 10. The specific structure of the heat transfer plate 40 and the specific structure of the heat transfer plate 40 in contact with the heat transfer body 30 and the lens unit 10 are described below.

[0039] Figure 3 yes Figure 1 The region R is a part of the cross section of the camera 100. The region R includes a part of the rear edge of the lens barrel 12, the heat transfer plate 40, the heat transfer body 30, and the heat generating body (electronic component) 23. Figure 3 and Figure 4 As shown in FIG. 1 , the heat transfer plate 40 may have a first protrusion 41 on one main surface 40a. The first protrusion 41 may be in a convex shape. Alternatively, Figure 5 As shown in FIG. 1 , the first protrusion 41 may be in the shape of a line segment. Figure 6 As shown, the first protrusion 41 may be in the shape of an annular ridge.

[0040] In the structure in which the first protrusion 41 is convex, the heat transfer plate 40 may have more than three first protrusions 41. The three or more first protrusions may not be on the same straight line. The first protrusion 41 may be hemispherical. The first protrusion 41 may be conical or polygonal with an axis orthogonal to the main surfaces 40a, 40b. The first protrusion 41 may be semi-cylindrical or polygonal with an axis parallel to the main surfaces 40a, 40b. Preferably, the edge of the first protrusion 41 is formed smoothly. In other words, the first protrusion 41 of the heat transfer plate 40 can smoothly transition to other parts. This structure can reduce the gap between the heat transfer plate 40 and the heat transfer body 30.

[0041] In the structure in which the first protrusion 41 is convex, the heights of the plurality of first protrusions 41 may be different, in other words, the lengths in the normal direction of the main surface (the main surface 40a on one side) may be different. The height of the first protrusion 41 may be different depending on the interval between the heating element 20 and the heat transfer plate 40 that are opposite to each other across the heat transfer element 30. More specifically, the wider the interval, the higher the first protrusion 41 may be. With such a structure, since the heat transfer element 30 pressed by the first protrusion 41 is deformed according to the height of the first protrusion 41, the protrusion height of the heat transfer element 30 to the side opposite to the first protrusion can be changed.

[0042] like Figure 7 As shown, the first protrusion 41 may have a through hole 44h that penetrates from the main surface 40a side of one side to the main surface 40b side of the other side. In other words, the heat transfer plate 40 may have a fourth protrusion 44 formed with a through hole 44h. The heat transfer body 30 may intrude into the interior of the through hole 44h. The heat transfer body 30 may contact the inner circumference and the outer circumference of the fourth protrusion 44. The total contact area of ​​the heat transfer body 30 with the inner circumference and the outer circumference may be greater than the area of ​​the through hole 44h. In other words, by forming the through hole 44h, the contact area between the heat transfer body 30 and the fourth protrusion 44 may become larger. The heat transfer body 30 may not contact the lens unit 10. When manufacturing the shooting device of this embodiment, the fourth protrusion 44 of the heat transfer plate 40 may be pressed against the heat transfer body 30, so that the heat transfer body 30 can enter the inner circumference of the fourth protrusion 44.

[0043] like Figure 8 As shown, in the structure where the first protrusion 41 is a line segment ridge, the first protrusion 41 having the through hole 44h can be slit-shaped as a whole. When manufacturing the imaging device of this embodiment, the first protrusion 41 of the heat transfer plate 40 is pushed against the heat transfer body 30, so that the heat transfer body 30 can enter the slit.

[0044] The heat transfer plate 40 or the lens unit 10 may be formed on the other main surface 40b side so that the contact area between the heat transfer plate 40 and the lens unit 10 is reduced and the two are in contact. Figure 3 As shown in FIG. 4 , the heat transfer plate 40 may have a recess 42 on the other main surface 40b side. Alternatively, Fig. 9 As shown in FIG. 1 , the heat transfer plate 40 may have three or more second protrusions 43 on the other main surface 40b side. The three or more second protrusions 43 may not be on the same straight line. Alternatively, as shown in FIG. Fig.10 As shown, the lens unit 10 may have three or more third convex portions 13 in contact with the heat transfer plate 40, instead of providing the concave portion 42 or the second convex portion 43 on the heat transfer plate. The three or more third convex portions 13 may not be on the same straight line. The number of the second convex portions 43 and the third convex portions 13 may be set to a total of three or more.

[0045] like Figure 1 As shown, a portion of the heat transfer plate 40 near the second opening 40o can be inclined toward the main surface 40a on one side. Therefore, a portion of the heat transfer plate 40 near the second opening 40o can be inclined toward the heating element 20 in the imaging device 100. For example, the heat transfer plate 40 is bent around the second opening 40o to form an inclined portion 40i inclined toward the heating element 20. In the above-mentioned structure in which the heat transfer element 30 is a solid with elasticity, since the heat transfer plate 40 presses the heat transfer element 30, the heat transfer element 30 can be deformed to match the shape of the heat transfer plate 40. The heat transfer element 30 can also be inclined toward the heating element 20 near the second opening 40o.

[0046] The angle θ of the inclined portion 40i relative to the optical axis OA of the lens unit 10 may be greater than the incident angle of the light that passes through the aperture of the optical system and enters the imaging element 21. With this structure, the light that passes through the aperture of the optical system and enters the imaging element 21 can reach the imaging element 21 without being blocked by the heat transfer plate 40 or the heat transfer body 30.

[0047] like Fig.11 As shown, from the in-plane direction of the heat transfer plate 40 (with Fig.11 The first protrusion 41 may be asymmetric with respect to the normal line 1 of the heat transfer plate 40 when viewed in a direction perpendicular to the paper surface of the heat transfer plate 40. In other words, the heat transfer plate 40 may have a first protrusion (fifth protrusion) 41 that is asymmetric with respect to the normal line 1 of the heat transfer plate 40. The cross-sectional shape of the first protrusion 41 may be a right triangle. One side of the right triangle may include the normal line 1. The other side of the right triangle may be a hypotenuse that is closer to the side of the imaging element 21 than the normal line 1. The imaging element 21 may abut against the heat transfer body 30 in the in-plane direction of the heat transfer body 30. Due to the use of this structure, the first protrusion 41 is pressed by the imaging element 21 via the heat transfer body 30, so that the first protrusion 41 can generate a large elastic repulsive force. Therefore, the imaging element 21 and the heat transfer body 30 can be more closely attached, so that the heat of the imaging element 21 can be easily transferred to the heat transfer body 30.

[0048] like Fig.12 As shown in FIG. 1 , in one main surface 40a, the density of the first protrusions (sixth protrusions) 41 may increase as the density increases away from the opening (third opening) 40o of the heat transfer plate 40. For example, Figures 4 to 6As shown, the first protrusions 41 can be sparsely arranged in the first area 40f near the opening 40o. In the second area 40s away from the third opening 40o, the first protrusions 41 can be arranged more densely than in the first area 40f. With this structure, near the opening 40o, the pressure from the first protrusions 41 to the heat transfer body 30 becomes weaker, so that the expansion of the heat transfer body 30 in the in-plane direction becomes smaller. Therefore, the light that passes through the aperture of the optical system and is incident on the imaging element 21 is not easily blocked by the heat transfer body 30. On the other hand, in the area away from the opening 40o, the contact area between the heat transfer body 30 and the first protrusions 41 of the heat transfer plate 40 can be increased. Therefore, the heat of the heat transfer body 30 can be effectively transferred to the heat transfer plate 40.

[0049] Alternatively, the first protrusions 41 may be densely arranged in the first region 40f. In the second region 40s, the first protrusions 41 may be arranged more sparsely than in the first region 40f. With this structure, the contact area between the heat transfer body 30 and the first protrusions 41 of the heat transfer plate 40 near the opening 40o can be increased. Therefore, near the heating element 20, the heat of the heat transfer body 30 can be effectively transferred to the heat transfer plate 40.

[0050] like Figure 1 As shown, the second heat transfer plate 60 may be in direct or indirect contact with the first heat transfer plate 40. The second heat transfer plate 60 may surround the electronic component (heat generating body) 23 from a direction intersecting the optical axis OA of the lens unit 10. For example, the second heat transfer plate 60 may surround the electronic component 23 from a direction orthogonal to the optical axis OA of the lens unit 10. In other words, the second heat transfer plate 60 may surround the electronic component 23 around an axis parallel to the direction orthogonal to the optical axis OA of the lens unit 10. The second heat transfer plate 60 may be in a polygonal cylindrical shape or a cylindrical shape. Alternatively, the second heat transfer plate 60 may surround the electronic component 23 together with the first heat transfer plate 40.

[0051] The second heat transfer plate 60 may include a main body 60m and a contact portion 60t. The contact portion 60t may be continuous with the main body 60m at the rear end of the imaging device 100. The contact portion 60t may be formed by bending the main surface of the main body 60m in one direction.

[0052] The second heat transfer plate 60 may be arranged in the imaging device 100 such that the main surface of the main body 60m is parallel to the optical axis OA of the imaging optical system 11. In the imaging device 100, the main body 60m may extend backward from the heat transfer plate 40. With this structure, the heat of the heating element 20 can be transferred in a direction away from the lens unit 10.

[0053] The main body 60m may be fixed to the frame 80 of the imaging device 100 by using an adhesive. The adhesive may be a heat transfer material.

[0054] The contact portion 60t may be mounted on the internal heat transfer member 70. The internal heat transfer member 70 may be disposed on the rear side of the imaging device 100. The internal heat transfer member 70 may have heat transfer properties and insulation properties. The internal heat transfer member 70 may be implemented, for example, by a heat transfer sheet made of silicon or a heat transfer potting material, but is not limited thereto.

[0055] The second heat transfer plate 60 may be in contact with the top end portion 40t of the heat transfer plate 40. Specifically, the main body 60m of the second heat transfer plate 60 may be in contact with the top end portion 40t of the heat transfer plate 40. At least a portion between the second heat transfer plate 60 and the top end portion 40t may be in contact via a heat transfer material. The heat transfer material may improve the contact or heat transfer between the second heat transfer plate 60 and the top end portion 40t. The heat transfer material may be solid or liquid.

[0056] like Fig.13 As shown, the end of the top portion 40t of the heat transfer plate 40 may be located in the recess 80r of the frame 80 together with the end of the contact portion 60t of the second heat transfer plate 60. Alternatively, the end of the top portion 40t of the heat transfer plate 40 may be located in the recess of the lens barrel 12. The recess may be located on the heat transfer plate 40 side of the frame 80. A heat transfer material may be filled in the recess. The heat transfer material may be a highly thermally conductive resin.

[0057] The imaging device 100 of this embodiment includes: a heat transfer body 30, which is provided between the heating element 20 and the lens unit 10, and transfers heat from the heating element 20; and a heat transfer plate, which is provided between the lens unit 10 and the heat transfer body 30, and contacts the heat transfer body 30 on one main surface side and contacts the lens unit 10 on the other main surface side. The first contact area between the heat transfer plate 40 and the heat transfer body 30 is larger than the second contact area between the heat transfer plate 40 and the lens unit 10. With such a structure, the imaging device 100 can reduce the heat transfer from the heating element 20 to the lens unit 10, and can transfer the heat of the heating element 20 to the heat transfer plate 40 via the heat transfer body 30.

[0058] Usually, the shooting device mounted on the vehicle is sometimes stored in a narrow space such as a rearview mirror to save space and where heat is not easy to diffuse. In addition, there is also the external ambient temperature, so the shooting device needs to work stably at a very high temperature. In addition, since the shooting device used for peripheral monitoring requires a wide viewing angle, the focal length of the shooting device usually becomes shorter. Therefore, the height of the shooting device will inevitably become lower, and the heat dissipation will also tend to deteriorate. In addition, in the vehicle shooting device, the lens surface on one side of the object lens of the shooting device is easily cooled by wind, rain, snowfall, etc. during driving, and the water vapor in the spherical space of the cooled lens will condense on the lens surface and cause poor visual recognition. Usually, the higher the temperature of the lens surface on one side of the object lens, the more likely it is that this condensation phenomenon will occur. Therefore, it is necessary to effectively transfer heat from the heating element and reduce the heat transfer to the lens unit. The shooting device 100 with the above structure is effective in a space-saving structure such as a rearview mirror set on a vehicle.

[0059] In the imaging device 100 of the present embodiment, the heat transfer plate 40 extends to a position outside the lens unit 10 when viewed from the direction of the normal line l of the main surface (for example, the other main surface 4b) of the heat transfer plate 40. With this structure, the imaging device 100 can transfer the heat transferred to the heat transfer plate 40 to a space or object outside the lens unit 10.

[0060] The imaging device 100 of this embodiment includes a second heat transfer plate 60, which surrounds the heat generating element from a direction intersecting the optical axis OA of the lens unit 10, and the second heat transfer plate 60 is in direct or indirect contact with the first heat transfer plate 40, and the heat generating element is the electronic component 23. In this structure, since the first heat transfer plate 40 or the second heat transfer plate 60 is made of metal, electromagnetic interference or electromagnetic compatibility can be improved.

[0061] Although the present invention has been described with reference to the drawings and embodiments, it should be noted that various modifications and alterations can be easily made by those skilled in the art according to the present invention. Therefore, it should be noted that the scope of the present invention includes these modifications and alterations.

[0062] Description of Reference Numerals

[0063] 100 Filming Devices

[0064] 10 lens units

[0065] 11Photographic Optical System

[0066] 11s holding part

[0067] 12 Lens tube

[0068] 12r recess

[0069] 12o opening

[0070] 12h holding hole

[0071] 13 The third convex part

[0072] 20Heating element

[0073] 21 camera elements

[0074] 22 substrate

[0075] 23Electronic components

[0076] 30Heat transfer body

[0077] 30o First opening

[0078] 40 heat transfer plates

[0079] 40o Second opening, third opening

[0080] 40a, 40b main surface

[0081] 40i inclined part

[0082] 40m Main body

[0083] 40t top end

[0084] 41 The first convex part and the fifth convex part

[0085] 42 recess

[0086] 43 second convex part

[0087] 44Fourth convex part

[0088] 44h through hole

[0089] 45 Slit

[0090] 60 second heat transfer plate

[0091] 60t contact part

[0092] 60m Main body

[0093] 70 Internal heat transfer components

[0094] 80 frame

[0095] 200 display devices

[0096] 300 vehicles

[0097] OA optical axis

[0098] R Region

[0099] Normal

[0100] θ angle

Claims

1. A photographing device, comprising: Heating body; lens unit; a heat transfer body, disposed between the heating body and the lens unit, and transferring heat from the heating body; as well as The first heat transfer plate is provided between the lens unit and the heat transfer body, and is in contact with the heat transfer body on one main surface side and in contact with the lens unit on the other main surface side. A first contact area between the first heat transfer plate and the heat transfer body is greater than a second contact area between the first heat transfer plate and the lens unit.

2. The photographing device according to claim 1, wherein: The first heat transfer plate extends to the outside of the lens unit when viewed in the normal direction of the main surface of the first heat transfer plate.

3. The photographing device according to claim 1 or 2, wherein: The first heat transfer plate has a first convex portion on the one main surface side. The first convex portion is in a hemispherical shape, a conical shape, a semi-cylindrical shape, a polygonal column shape or a polygonal pyramid shape.

4. The photographing device according to any one of claims 1 to 3, wherein: The first heat transfer plate has a second convex portion in contact with the lens unit, or the lens unit has a third convex portion in contact with the first heat transfer plate.

5. The photographing device according to any one of claims 1 to 4, wherein: The first heat transfer plate has a fourth protrusion on the one main surface side, the fourth protrusion has a through hole, and the heat transfer body is in contact with the inner peripheral surface and the outer peripheral surface of the fourth protrusion.

6. The photographing device according to any one of claims 1 to 5, wherein: The heat transfer body has a first opening, and the first opening includes the optical axis of the lens unit. The first heat transfer plate has a second opening portion, and the second opening portion includes an optical axis of the lens unit.

7. The photographing device according to claim 6, wherein: The heat transfer body is a solid with elasticity. The first heat transfer plate is inclined toward the heat generating element in the vicinity of the second opening.

8. The photographing device according to any one of claims 1 to 7, wherein: The heat transfer body is a solid with elasticity. The first heat transfer plate has a fifth protrusion on the one main surface side. When viewed in the in-plane direction of the first heat transfer plate, the fifth protrusion is asymmetric with respect to a normal line of the first heat transfer plate.

9. The photographing device according to any one of claims 1 to 8, wherein: The first heat transfer plate has a third opening, and the third opening includes the optical axis of the lens unit. The first heat transfer plate has a sixth protrusion on the one main surface side. On the one main surface, the arrangement density of the sixth protrusions increases as the distance from the third opening increases.

10. The photographing device according to any one of claims 1 to 9, wherein: The imaging device comprises: a second heat transfer plate surrounding the heating element from a direction intersecting with the optical axis of the lens unit, The second heat transfer plate is in direct or indirect contact with the first heat transfer plate, The heat generating element is an electronic component.

11. A display system comprising: The photographing device according to any one of claims 1 to 10; A display device displays the image captured by the camera.

12. A vehicle having: The photographing device according to any one of claims 1 to 10.

Images