JP2014056208A - Imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging device in which flexural rigidity of a tripod plate is enhanced.SOLUTION: An imaging device includes a camera main body, and a tripod female screw part to which a screw provided in a tripod is screwed, and comprises a tripod shoe main body member fixed to the camera main body with a plurality of screws in such a manner as to surround the tripod female screw part. The tripod shoe main body member is bent while employing a direction perpendicular to a camera optical axis as a bent axis; screw fixing places fixed by the screws of the tripod shoe main body member are disposed in a first plane where the tripod female screw part is disposed, and in a second plane formed by folding the tripod shoe main body member; in the tripod shoe main body member, at both sides of the tripod female screw part, a deflection suppression part is disposed in parallel with a camera optical axis; the deflection suppression part is disposed in at least an area surrounded by a straight line crossing perpendicularly with the camera optical axis passing through a centroid of a polygon having apexes at the screw fixing places of the tripod shoe main body member and a straight line crossing perpendicularly with the camera optical axis passing through the center of the tripod female screw part.

Description

  The present invention relates to an imaging apparatus, and more particularly to a mounting structure for a tripod.

  In an interchangeable-lens digital SLR camera, a tripod plate with a tripod female screw on the bottom of the camera to withstand deformation caused by external force when the camera is attached to a tripod and external force is applied to the camera, especially the lens tip. A structure in which is arranged is proposed.

  FIG. 12 is a bottom view of the periphery of a tripod plate of a conventional digital single-lens reflex camera. 82 is a tripod plate, 81 is a tripod female screw, 85 is a mirror box, and 86 is a camera body. Reference numerals 83a to 83h are portions where the tripod plate 82, the mirror box 85, and the camera body 86 are fastened with screws (not shown).

  As shown in FIG. 12, the tripod plate 82 is disposed over the entire bottom of the camera, and has a structure that resists deformation due to external force applied to the camera by being screwed at various locations. However, in the conventional configuration shown in FIG. 12, the tripod plate is large, which is disadvantageous for reducing the weight of the camera. In addition, screws are fixed at various places, which causes an increase in assembly costs.

  Therefore, it is conceivable to arrange a bead on the tripod plate in order to increase the bending strength while reducing the number of screws and reducing the number of screws.

  FIG. 13 is a bottom view of the periphery of the tripod plate of the digital single-lens reflex camera when the tripod plate is downsized. 92 is a tripod plate, 91 is a tripod female screw, 95 is a mirror box, and 96 is a camera body. Reference numerals 93a to 93d are portions where the tripod plate 92, the mirror box 95 and the camera body 96 are fastened with screws (not shown). In the configuration shown in FIG. 13, the external force applied to the camera is received by a tripod female screw. Therefore, the direction of the maximum deflection is on a line connecting the tripod female screw 91 that is a fulcrum and the screw fixing points 93a to 93d that are power points. Therefore, as shown in FIG. 13, when beads 94a to 94d are arranged on the line connecting the tripod female screw 91 and the screw fixing points 93a to 93d, the most dynamic effect is obtained.

  On the other hand, Patent Document 1 discloses another method for increasing the bending strength of a tripod plate. Patent Document 1 includes a tripod seat having a tripod plate including two parts, a female screw part and a top plate having a convex shape provided immediately above the female screw part, and having high strength against static pressure. is suggesting.

  In recent years, in an imaging apparatus such as a digital single-lens reflex camera, power consumption of an imaging element and an image processing microcomputer has increased with an increase in pixels and functions. Furthermore, the heat generation density is increasing as the imaging device is reduced in size and thickness.

  FIG. 14 is a diagram illustrating a heat dissipation configuration of a conventional imaging device. An image processing microcomputer 212 is mounted on the substrate 211. Since the image processing microcomputer 212 has high power consumption, it generates a large amount of heat. Reference numeral 202 denotes a tripod plate. Reference numeral 214 denotes a heat transfer member that connects the image processing microcomputer 212 and the tripod plate 202. Since the tripod plate 202 is a part having a high heat capacity among the parts constituting the camera, the tripod plate 202 is useful as a heat radiation destination inside the camera.

  However, since the tripod female screw portion is made of a metal part, it has a higher thermal conductivity than a resin material often used as an exterior material. Furthermore, since the tripod female screw part is exposed to the outside, there is a problem that it is easy to feel heat when the photographer touches it.

  As a structure for suppressing the temperature rise of the tripod female screw portion, Patent Document 2 has a tripod plate composed of two parts, a tripod female screw portion and a top plate, and the tripod female screw portion is formed by a through-hole, The structure of the tripod attachment part which has covered the through-hole part of this with the member with low heat conductivity is proposed.

JP 2006-208801 A JP 2011-10069 A

  However, for example, when a bead is arranged as shown in FIG. 13, it is difficult to form the tripod plate integrally with a tripod female screw and a bead without providing a gap when press forming the tripod plate. Therefore, in this tripod plate, as shown by the dotted-lined round frame portion in FIG. 13, a portion where the bead cannot be disposed is formed, and the bending rigidity is low. As a result, the external force applied to the camera causes a large stress at that location, causing a problem that the tripod plate is deformed.

  The present invention has been made to solve at least one of the above problems. An object of the present invention is to provide an image pickup apparatus in which the bending rigidity of a tripod plate is increased. Another object of the present invention is to provide an imaging apparatus that can suppress the temperature rise of the tripod female screw while maintaining the bending rigidity of the tripod plate.

  An imaging apparatus according to an embodiment of the present invention includes a camera body and a tripod female screw portion into which a screw included in a tripod is screwed, and is fixed to the camera body with a plurality of screws so as to surround the tripod female screw portion. A tripod base body member, wherein the tripod base body member is bent with a direction perpendicular to the optical axis of the camera as a bending axis, and the screw fixing portion fixed by the screw of the tripod base body member is It is arranged on a first plane where a tripod female screw part is arranged and a second plane formed by bending the tripod seat main body member, and on the tripod seat main body member on both sides of the tripod female screw part, A deflection suppressing portion is arranged in parallel to the camera optical axis, and the deflection suppressing portion is orthogonal to the camera optical axis passing through a center of gravity of a polygon having at least the screw fixing portion of the tripod base body member as a vertex. Straight line and the tripod Characterized in that it is arranged in the region between the straight line perpendicular to the camera optical axis through the center of the threaded portion.

  According to the imaging apparatus of the present invention, the bending rigidity of the tripod plate can be maintained. Moreover, according to the imaging device of the present invention, it is possible to suppress the temperature rise of the tripod female screw while maintaining the bending rigidity of the tripod plate.

1 is an example of an external view of an imaging apparatus according to Embodiment 1. FIG. 1 is an example of an external view of an imaging apparatus according to Embodiment 1. FIG. It is a disassembled perspective view of the bottom part of a digital single-lens reflex camera. It is a bottom view of a digital single-lens reflex camera. It is a bottom view of a tripod plate. It is a bottom view of a tripod plate. It is a bottom view of a tripod plate. It is the perspective view which looked at the thermal radiation structure of the imaging device from diagonally lower side. It is a bottom view of a tripod plate. It is a bottom view which shows the relationship between a tripod plate and a graphite sheet. It is a bottom view of a tripod plate. It is a bottom view around the tripod plate of a conventional digital single-lens reflex camera. It is a bottom view around the tripod plate of a conventional digital single-lens reflex camera. It is the figure which showed the thermal radiation structure of the conventional imaging device.

Example 1
1 and 2 are examples of external views of the imaging apparatus according to the first embodiment. FIG. 1 is a perspective view as seen from the front of the camera, showing a state in which the taking lens unit is removed. FIG. 2 is a perspective view seen from the back side of the camera. A digital single-lens reflex camera 1 shown in FIGS. 1 and 2 is an imaging apparatus according to the present embodiment.

  The mount 2 is a part where a detachable photographing lens (not shown) is attached to the camera body. The mount contact 3 has a function of transmitting a control signal, a status signal, a data signal, and the like between the camera body and the photographing lens unit and supplying currents of various voltages.

  The lens lock release button 4 is a button that is pressed when the photographing lens unit is removed. The mirror box 5 is disposed in the camera casing. The mirror box 5 has a shape surrounding the light beam that has passed through the photographing lens. The mirror box 5 has a built-in quick return mirror 6 that can be moved to a position where the subject image can be observed through the viewfinder eyepiece window 18 and a position where the subject image is retracted from the photographing light flux. An imaging element (not shown) is disposed at the subject image formation position, and the imaged subject image is photoelectrically converted and imaged.

  When viewed from the front in the figure, on the upper left side of the camera, there is a shutter button 7 as a start switch for starting shooting, a main operation dial 8 for setting a shutter speed and a lens aperture value according to an operation mode at the time of shooting, An LCD display panel 9 showing each operation mode is arranged.

  A flash unit 11 that pops up with respect to the camera body, a flash mounting shoe groove 12, and a flash contact 13 are provided at the upper center of the camera. A shooting mode setting dial 14 is disposed on the upper right side of the camera.

  A finder eyepiece window 18 for observing a subject image is provided above the center of the optical axis on the back of the camera, and a liquid crystal display unit 19 capable of displaying an image is provided at the center of the back of the camera. The sub operation dial 20 disposed beside the liquid crystal display unit 19 has an auxiliary function of the function of the main operation dial 8. The user sets the shutter speed with the main operation dial 8 and sets the lens aperture value with the sub operation dial 20 in the manual mode in which each of the shutter speed and the lens aperture value is set according to the user's will.

  The tripod female screw 21 is a female screw for attaching the tripod to the digital single-lens reflex camera 1. The tripod female screw 21 functions as a tripod female screw portion into which a screw included in the tripod is screwed. The power switch 43 turns on / off the power of the digital single-lens reflex camera 1.

  FIG. 3 is an exploded perspective view of the bottom of the digital single-lens reflex camera in the present embodiment. FIG. 4 is a bottom view of the digital single-lens reflex camera. Parts such as the mirror box 5 and the camera exterior are fastened to the camera body 30 with screws.

  The focus detection sensor unit 31 functions as a focus detection unit that performs phase difference type focus detection. The digital single-lens reflex camera 1 moves a focus lens in an imaging lens (not shown) to an in-focus position based on the detection signal. The focus detection sensor unit 31 is attached to the bottom of the mirror box 5 after a predetermined adjustment. The tripod plate 22 is a tripod base body member formed integrally with the tripod female screw 21. Since the tripod plate 22 is integrally formed with the tripod female screw 21, the number of parts and the assembly cost can be reduced. The tripod female screw 21 is disposed on the camera optical axis.

  The tripod plate 22 has a minimum size necessary for reduction in size and weight. As shown in FIG. 4, the width A of the tripod plate is equal to or smaller than the projection width indicated by B in the figure of the mount 2 and is set to be equal to or larger than the projection width indicated by C in the figure of the focus detection sensor unit 31.

  When a force is applied to the mount, a box shape is formed by the tripod plate 22, the mirror box 5, and the camera body 30 within the mount projection width, and can resist deformation of the camera. Thereby, the deformation of the camera can be suppressed without unnecessarily enlarging the tripod plate 22. Further, for the purpose of protecting the focus detection sensor unit 31 from the outside, the width of the tripod plate 22 is set to be equal to or larger than the width of the focus detection sensor unit 31.

  Screw holes 23 a to 23 d of the tripod plate 22 are screw fixing places arranged so as to surround the tripod female screw 21. Further, the screw holes 23a to 23d of the tripod plate 22 are arranged so as to be symmetric with respect to the center line of the tripod female screw 21 parallel to the camera optical axis. The screw holes 23a to 23d are parallel to the camera optical axis such that the line 23a-23c connecting the screw hole 23a and the screw hole 23c and the line 23b-23d connecting the screw hole 23b and the screw hole 23d are parallel to each other. It is arranged to be.

  The tripod plate 22 is fixed to the bottom of the camera body 30 by screws 32a and 32b through screw holes 23a and 23b. The tripod plate 22 is fixed to the bottom of the mirror box 5 by screws 32c and 32d through screw holes 23c and 23d. That is, the tripod plate 22 is fixed to the bottom of the mirror box 5 with a plurality of screws 32a, 32b, 32c, and 32d so as to surround the tripod female screw 21.

  Further, the tripod plate 22 is bent between the tripod female screw 21 and the screw holes 23c and 23d of the tripod plate 22 in a crank shape with two axes orthogonal to the camera optical axis as bending axes. . The ribs 25a and 25b are formed by rib processing on the bending shaft on the side close to the tripod female screw 21 of the two bending shafts. By forming the ribs 25a and 25b, the bending rigidity of the bent portion is increased.

  Since the tripod plate 22 has a crank-like bent shape, the screw holes 23a and 23b are arranged on a different plane from the screw holes 23c and 23d. Specifically, the screw holes 23a and 23b are arranged in the first plane where the tripod female screw 21 is present, and the screw holes 23c and 23d are the first ones close to the previous mount bent in a crank shape. 2 planes. That is, the screw fixing portions fixed with the screws of the tripod plate 22 are arranged on the first plane on which the tripod female screw 21 is arranged and the second plane formed by bending the tripod plate.

  When the tripod plate 22 does not have a crank-like bent shape and the screws for fixing the tripod plate 22 are in the same plane, when a load is applied to the tip of the lens, the direction of maximum deflection of the tripod plate 22 is as follows: It is on the line connecting the fixed points. On the other hand, in the imaging apparatus of the present embodiment, the tripod plate 22 has a bent portion. Therefore, the direction of the maximum deflection of the tripod plate 22 is on the line connecting the screw holes 23a and 23b from the tripod plate bent portion along the camera optical axis (tripod plate longitudinal direction). And the bead is arrange | positioned along the bending direction. Thereby, deformation of the tripod plate can be suppressed.

  FIG. 5 is a bottom view of the tripod plate 22 in the present embodiment. As described above, the beads 24 a and 24 b are arranged on both sides of the tripod female screw 21 in parallel to the camera optical axis as a deflection suppressing portion that suppresses the deflection. The beads 24a and 24b are formed by bead processing and function as a deflection suppressing portion that suppresses deflection. The bead 24a is disposed in a region sandwiched between the tripod female screw 21 and the wire 23a-23c connecting the screw holes. The bead 24b is disposed in a region sandwiched between the tripod female screw 21 and the wire 23b-23d connecting the screw holes. Thereby, when press-molding the tripod plate, it is possible to achieve both the tripod female screw molding and the bead molding. In this embodiment, the bead 24a, 24b forms a deflection suppressing portion on the tripod plate 22. Instead, a rib is formed at the same position as the bead 24a, 24b by rib processing. Even so, the rib functions as a deflection suppressing portion.

  Further, the convex direction of the beads 24a and 24b is preferably the internal direction of the camera (the depth direction on the paper). By doing so, it is possible to avoid unnecessarily enlarging the camera by protruding the bead to the exterior side.

  As shown in FIG. 5, let AA be a straight line that passes through the center of gravity P of a polygon (rectangle) having tripod plate fixing screw holes 23a, 23b, 23c, and 23d as vertices and is orthogonal to the camera optical axis. A straight line passing through the center of the tripod female screw 21 and perpendicular to the camera optical axis is defined as BB. At least beads 24a and 24b are arranged in a region D sandwiched between the straight line AA and the straight line BB.

  When a load is applied to the lens tip, a particularly large bending stress is generated in a region D sandwiched between the straight line AA and the straight line BB, and the lens is deformed so as to be bent along an axis orthogonal to the camera optical axis. Therefore, the configuration shown in FIG. 5 can effectively resist bending. Thereby, it becomes possible to prevent the tripod plate 22 from being deformed.

  The bent portion of the tripod plate 22 is preferably disposed outside the region D sandwiched between the straight line AA and the straight line BB and on the mount side (subject side). This is because when a bent portion is arranged in a region D sandwiched between the straight line AA and the straight line BB, a very large bending stress is applied to the bent portion when a load is applied to the lens tip. This is because the tripod plate 22 is deformed.

  The lightening holes 26 a to 26 d are formed to reduce the weight of the tripod plate 22. The lightening holes 26a to 26d are disposed outside a region D sandwiched between the straight line AA and the straight line BB. This is because if a load is applied to the tip of the lens, a large bending stress is generated in the region D sandwiched between the straight line AA and the straight line BB. This is because the tripod plate 22 cannot resist bending deformation.

  With the above configuration, when press forming a tripod plate, when external force is applied to the camera while simultaneously forming a tripod female screw and bead molding, a vertical force is applied particularly to the front end of the photographic lens attached to the camera. Even in such a case, deformation of the tripod plate can be prevented.

  6 and 7 are bottom views of a tripod plate for explaining a modification of the present embodiment. The tripod plate 42 shown in FIG. 6A has a configuration in which a square center of gravity P having apexes of the fixing screw holes 43a, 43b, 43c, and 43d is located behind the center of the tripod female screw 41 (subject side). Have. In the tripod plate 42 shown in FIG. 6A, the positional relationship between the center of gravity P and the center of the tripod female screw 41 is opposite to the configuration shown in FIG.

  A straight line that passes through the quadratic center of gravity P with the tripod plate fixing screw holes 43a, 43b, 43c, and 43d at the apex and is orthogonal to the camera optical axis is defined as AA. A straight line passing through the center of the tripod female screw 41 and perpendicular to the camera optical axis is defined as BB.

  At least the beads 44a and 44b are arranged in a region D sandwiched between the straight lines AA and BB. The ribs 45a and 45b are formed by rib machining, and increase the bending rigidity of the bent portion of the tripod plate 42.

  The tripod plate 52 shown in FIG. 6 (B) has a square center of gravity P having apexes of the fixing screw holes 53a, 53b, 53c, 53d and the center of the tripod female screw 51.

  A straight line passing through the outer diameter end of the tripod female screw 51 on the mount side and orthogonal to the camera optical axis is taken as AA. A straight line passing through the outer diameter end of the tripod female screw 51 on the photographer side and orthogonal to the camera optical axis is defined as BB. A region D sandwiched between the straight line AA and the straight line BB is a region represented by the outer diameter width of the tripod female screw 51 in the camera optical axis direction. In this region D, at least beads 54a and 54b are arranged. The ribs 55a and 55b are formed by rib processing, and enhance the bending rigidity of the bent portion of the tripod plate 52.

  In any of the modifications shown in FIGS. 6A and 6B, when a load is applied to the tip of the lens, a particularly large bending stress is generated in a region D sandwiched between the straight line AA and the straight line BB. The lens is deformed so as to be bent along an axis orthogonal to the optical axis of the camera. Therefore, the above configuration can efficiently resist bending. As a result, the tripod plates 42 and 43 can be prevented from being deformed.

  Next, another modification of the present embodiment will be described with reference to FIG. As shown in FIG. 7, a straight line that passes through the center of gravity P of a quadrangle with the tripod plate fixing screw holes 63a, 63b, 63c, and 63d as vertices and is orthogonal to the optical axis of the camera is AA. A straight line passing through the center of the tripod female screw 61 and perpendicular to the camera optical axis is denoted by B-B.

  At least the beads 64a and 64b are arranged in a region D sandwiched between the straight lines AA and BB. The shapes of the beads 64a and 64b are triangular, and are different from the linear beads as shown in FIGS. The bases 64aa and 64bb of the triangular beads 64a and 64b are disposed on both sides of the tripod female screw 61 substantially parallel to the camera optical axis.

  Also in the modification shown in FIG. 7, when a load is applied to the lens tip, a particularly large bending stress is generated in a region D sandwiched between the straight line AA and the straight line BB, and the axis perpendicular to the camera optical axis is generated. Deforms to bend along. Therefore, the above configuration can efficiently resist bending. The bead shape may be, for example, a triangular bead as described above, or a square shape, as long as a component substantially parallel to the camera optical axis is present at least in the region D on both sides of the tripod female screw. A shape bead may be sufficient and the shape is not limited.

  In each of the embodiments shown in FIGS. 5 and 6, the bead restraining portion is formed on the tripod plate by a bead, but instead, a rib is formed at the same position as each bead by rib processing. Even if formed, the rib functions as a deflection suppressing portion. Moreover, although the number of fixing screw holes of the tripod plate is four, it is not limited to this.

(Example 2)
Hereinafter, an imaging apparatus according to the second embodiment will be described with reference to FIGS. 8 to 11. FIG. 8 is a perspective view of the heat dissipation configuration of the imaging apparatus according to the second embodiment when viewed obliquely from below. The digital single-lens reflex camera 300 is an imaging apparatus according to the present embodiment. The basic configuration of the digital single lens reflex camera 300 is the same as the basic configuration of the digital single lens reflex camera 1. The image processing microcomputer 112 is mounted on the substrate 111. The graphite sheet 114 that functions as a heat transfer member connects the image processing microcomputer 112 and the tripod plate 102. Thereby, the local temperature rise in the vicinity of the image processing microcomputer 112 which is a heat generating part in the imaging apparatus can be suppressed. In the present embodiment, the image processing microcomputer is used as the heat generating unit. However, the present embodiment also has the same effect with respect to a heating element other than the image processing microcomputer such as an image sensor.

  FIG. 9 is a bottom view of the tripod plate in the second embodiment. In order to increase the thermal resistance between the tripod female screw 101 and other regions of the tripod plate 102, the through holes 107a to 107g as second thinned portions are provided in the vicinity of the tripod female screw 101. The lightening holes 106a to 106d as the first lightening parts are formed at the same positions as the lightening holes 26a to 26d described in FIG.

  In the present embodiment, the hollow holes 107a to 107g are arranged so as to avoid the lines 101-103a, 101-103b, 101-103b, and 101-103d connecting the tripod female screw 101 and the tripod plate fixing screw holes 103a to 103d, respectively. Has been. Further, the lightening holes 107a to 107g are arranged so as to avoid the quadratic gravity center point P having the tripod plate fixing screw holes 103a to 103d as the apexes and the lines connecting the gravity center point P and the tripod plate fixing screw holes 103a to 103d. ing.

  Here, let AA be a straight line that passes through the quadratic center of gravity P with the tripod plate fixing screw holes 103a, 103b, 103c, and 103d as vertices and is orthogonal to the optical axis of the camera. A straight line passing through the center of the tripod female screw 101 and orthogonal to the camera optical axis is defined as BB. The lightening holes 107a to 107g are arranged so as to avoid a region D sandwiched between the straight line AA and the straight line BB. Note that the lightening holes 106a to 106d are arranged outside the region D sandwiched between the straight line AA and the straight line BB.

  By arranging the lightening holes 107a to 107g as described above, even if an external force is applied from the outside of the camera, especially when a load is applied to the tip of the lens, a large stress is not applied to the lightening hole part. It becomes possible to prevent the deformation of 102.

  The drip-proof member 115 seals the joint portion between the periphery of the tripod female screw 101 and the camera exterior. The drip-proof member 115 is disposed so as to circumscribe the tripod female screw 101, and exhibits a drip-proof effect by being compressed by the tripod plate 102 and the camera exterior. The lightening holes 107a to 107g of the tripod plate 102 are arranged so as to avoid the region where the drip-proof member 115 is provided. This makes it possible to maintain the drip-proof performance of the camera even if the lightening holes 107a to 107g are arranged.

  FIG. 10 is a bottom view showing the relationship between the tripod plate and the graphite sheet in Example 2. The graphite sheet 114 is a heat transfer member. The graphite sheet 114 is connected to the tripod plate 102 with an adhesive tape or the like. A hatched portion in FIG. 10 is a connection portion between the tripod plate 102 and the graphite sheet 114.

  In order to avoid the tripod female screw 101, the graphite sheet 114 is provided with an opening 114a. The graphite sheet 114 is adhered to the tripod plate 102 so that the upper edge of the opening 114a and the upper edge of the lightening holes 107a to 107g coincide. That is, even if the graphite sheet 114 is attached to the tripod plate 102, the graphite sheet 114 does not block the hollow holes 107a to 107g. Thereby, it is possible to prevent excessive heat transfer to the tripod female screw 101 while releasing the heat of the image processing microcomputer 112 to the tripod plate 102.

  A region D sandwiched between the straight line AA and the straight line BB is a region in which the lightening hole 107 is not disposed. In this region D, the tripod female screw 101, the tripod plate 102, and the graphite sheet 114 are connected outside the beads 104a and 104b. Thereby, the distance to the connection part of the tripod female screw 101 and the tripod plate 102 and the graphite sheet 114 is increased, and the thermal resistance between the tripod female screw 101 and the connection part of the tripod plate 102 and the graphite sheet 114 is increased. Can be increased.

  With the above configuration, when the tripod plate is press-molded, it is possible to suppress an increase in temperature of the tripod female screw while maintaining the rigidity of the tripod plate. Therefore, it is possible to suppress the temperature rise of the tripod female screw without increasing the number of parts and the assembly cost of the tripod plate.

  FIG. 11 is a bottom view of a tripod plate for explaining a modification of the second embodiment. In the modification shown in FIG. 11A, the quadrangular center of gravity P with the tripod plate fixing screw holes 123a, 123b, 123c, and 123d as vertices is closer to the photographer side than the center of the tripod female screw 121 (upper side in the figure). It is in. The tripod plate fixing screw holes 123a, 123b, 123c, and 123d are defined as a straight line AA that passes through a quadrangular center of gravity P having a vertex and orthogonal to the camera optical axis. A straight line passing through the center of the tripod female screw 121 and perpendicular to the camera optical axis is denoted by B-B. The lightening holes 127a to 127f are arranged so as to avoid a region D sandwiched between the straight lines AA and BB.

  In the modification shown in FIG. 11 (B), the center of gravity of the quadrilateral center P of the tripod plate fixing screw holes 143a, 143b, 143c, 143d of the tripod plate 142 and the center of the tripod female screw 141 overlap. A straight line that passes through the outer end of the tripod female screw 141 on the mount side and is orthogonal to the camera optical axis is AA. A straight line passing through the outer end of the tripod female screw 141 on the photographer side (upper side in the figure) and orthogonal to the camera optical axis is defined as BB. A region D sandwiched between the straight line AA and the straight line BB is a region represented by the outer width of the tripod female screw 141 in the camera optical axis direction. The lightening holes 147a to 147f are arranged so as to avoid the region D.

  In any of the modifications shown in FIGS. 11A and 11B, heat transfer to the tripod female screw can be suppressed while maintaining the rigidity of the tripod plate. In the second embodiment, the bead suppressing portion is formed on the tripod plate by the bead. However, even if the rib is formed by rib processing at the same position as the bead forming position, the rib is suppressed from bending. It functions as a part. Moreover, although the number of fixing screw holes of the tripod plate is four, it is not limited to this.

  As mentioned above, although the preferable Example of this invention was described, this invention is not limited to these Examples, A various deformation | transformation and change are possible within the range of the summary.

2 Mount 5 Mirror box 21 Tripod female screw 22 Tripod plate 24 Bead 30 Camera body 31 Focus detection sensor unit 101 Tripod female screw

Claims (14)

The camera body,
A tripod seat body member having a tripod female screw portion into which a screw included in a tripod is screwed and fixed to the camera body with a plurality of screws so as to surround the tripod female screw portion;
The tripod base body member is bent with a direction orthogonal to the camera optical axis as a bending axis,
The screw fixing portions fixed with the screws of the tripod base body member are arranged on a first plane on which the tripod female screw portion is arranged and a second plane formed by bending the tripod base body member. ,
In the tripod base body member, on both sides of the tripod female screw part, a deflection suppressing part is arranged in parallel to the camera optical axis,
The deflection suppressing portion includes at least a straight line passing through a polygonal center of gravity centering on the screw fixing portion of the tripod seat body member and perpendicular to the camera optical axis, and passing through the center of the tripod female screw portion. An imaging apparatus, wherein the imaging apparatus is arranged in a region sandwiched between straight lines orthogonal to the optical axis. A mount to which the taking lens can be attached and detached,
A focus detection unit for performing focus detection,
The imaging apparatus according to claim 1, wherein a width of the tripod base body member is equal to or smaller than a projection width of the mount and equal to or larger than a projection width of the focus detection unit. The imaging device according to claim 1, wherein a rib that increases the bending rigidity of the bent portion is formed in the bent portion of the bent tripod seat main body member. The bent portion of the tripod base body member includes a straight line that passes through a polygonal center of gravity centered on the screw fixing portion of the tripod base body member and is perpendicular to the camera optical axis, and a center of the tripod female screw portion. The imaging apparatus according to any one of claims 1 to 3, wherein the imaging apparatus is disposed outside a region sandwiched by a straight line orthogonal to the camera optical axis. 5. The screw fixing portion of the tripod seat main body member is arranged so as to be line symmetric with respect to a center line of the tripod female screw in a direction parallel to the camera optical axis. The imaging device according to any one of the above. The center of gravity of the polygon whose vertex is the screw fixing point of the tripod seat body member is matched with the center of the tripod female screw part,
The said bending suppression part is arrange | positioned at least in the area | region represented by the outer diameter width of the said camera optical axis direction of the said tripod female screw part. Imaging device. The imaging apparatus according to claim 1, wherein the deflection suppressing portion is a bead formed by bead processing, and a convex direction of the bead is an internal direction of the camera. The tripod base body member has a first lightening part,
In the tripod base body member, the first thinned portion includes a straight line that passes through a polygonal center of gravity centered on the screw fixing portion of the tripod base body member and is orthogonal to the camera optical axis, and the tripod female body. The imaging apparatus according to any one of claims 1 to 7, wherein the imaging apparatus is disposed so as to avoid a region sandwiched between straight lines orthogonal to the camera optical axis passing through the center of the screw portion. A heat transfer member that connects the heat generating part in the imaging device and the tripod base body member;
The tripod base body member has a second lightening portion around the tripod female screw portion,
The second lightening portion is arranged avoiding a region on a line connecting the tripod female screw portion of the tripod seat body member and the screw fixing portion,
The connecting portion between the heat transfer member and the tripod base body member is disposed in a region farther from the second lightening portion than the tripod female screw portion. The imaging device according to any one of the above. The image pickup apparatus according to claim 9, wherein the second lightening portion is disposed so as to avoid areas on lines connecting the screw fixing portions. The second lightening portion is orthogonal to the camera optical axis passing through the center of the tripod female screw portion and a straight line passing through the center of gravity of the polygon having the screw fixing point as a vertex. The imaging device according to claim 9 or 10, wherein the imaging device is arranged so as to avoid a region sandwiched between straight lines. In a region sandwiched between a straight line perpendicular to the camera optical axis passing through the center of gravity of the polygon whose vertex is the screw fixing point and a straight line perpendicular to the camera optical axis passing through the center of the tripod female screw part, The imaging device according to claim 11, wherein a connection portion between the heat transfer member and the tripod seat main body member is connected to a region farther from the deflection suppressing portion than the tripod female screw portion. The center of gravity of the polygon whose vertex is the screw fixing point of the tripod seat body member is matched with the center of the tripod female screw part,
The said 2nd thinning part is arrange | positioned avoiding the area | region represented by the outer diameter width of the said camera optical axis direction of the said tripod internal thread part. Imaging device. A drip-proof member for drip-proofing between the tripod female screw and the camera exterior is provided around the tripod female screw,
The imaging device according to any one of claims 9 to 13, wherein the second lightening portion is disposed so as to avoid an area where the drip-proof member is provided.

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