JP2014178565A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera with an adjustable flange back, capable of downsizing without impairing strength while having a mechanism to prevent change in an once-adjusted flange back.SOLUTION: A camera includes: an imaging unit (2000); a mounting member (100) to which the imaging unit is mounted; imaging unit mounting parts (400a, 400b, 400c) disposed on the mounting member, and configured to mount the imaging unit; and a main body (1000) in which a metal plate (1100) is inserted to a resin member (1200) having an opening (1901) around a photographic optical axis. The main body is fastened to the mounting member by a plurality of fastening parts (1980a, 1980b, 1980c, 1980d) in a periphery of the opening. The metal plate formed by cutting out a part of an annular part surrounding the opening.

Description

  The present invention relates to an imaging device having a main body made of a resin member, and more particularly to a configuration of a main body in which a metal is inserted into a resin member.

  Conventionally, in an imaging apparatus such as a digital camera, an imaging unit is attached to a mirror box having a mount so that a flange back between the mount and the imaging surface can be adjusted. As a method of adjusting the flange back, the flange back is adjusted by rotating the flange back adjustment screw for attaching the image pickup unit to the mirror box so that the image pickup unit moves back and forth in the optical axis direction. At this time, a method of biasing and holding the imaging unit at a position where the flange back is adjusted is known by a flange back adjustment spring provided between the mirror box and the imaging unit.

  FIG. 7 shows a conventional example of a holding structure for an image sensor.

  On the rear surface of the mirror box 5000, imaging unit mounting portions 5600a, 5600b, and 5600c and imaging unit positioning shafts 5610a and 5610b are provided so as to project and position the imaging unit 7000. Further, a washer positioning shaft 5630 for positioning the loosening prevention washer 7500 is provided in a projecting manner. Further, washer rotation prevention shapes 5620a, 5620b, and 5620c, which are partially formed as concave grooves, are provided so as to project. On the other hand, the main body 6000 is provided with an imaging unit mounting portion 5600a, an imaging unit positioning shaft 5610a, and a notch portion 6200 for escaping the washer rotation prevention shape 5620a. Further, the main body 6000 is provided with imaging unit mounting portions 5600b and 5600c, an imaging unit positioning shaft 5610b, a washer positioning shaft 5630, and openings 6300a and 6300b for escaping the washer rotation prevention shapes 5620b and 5620c. Yes. Here, in a state where the main body 6000 is attached to the mirror box 5000, the imaging unit attachment portion 5600a, the imaging unit positioning shaft 5610a, and the washer rotation prevention shape 5620a are disposed above the notch portion 6200. Further, the imaging unit mounting portions 5600b and 5600c, the imaging unit positioning shaft 5610b, the washer positioning shaft 5630, and the washer rotation prevention shapes 5620b and 5620c are inserted into the openings 6300a and 6300b with a predetermined clearance.

  Hereinafter, a method of adjusting the flange back by attaching the imaging unit 7000 to the mirror box 5000 in a state where the main body 6000 is attached to the mirror box 5000 will be described.

  First, the flange back adjustment spring 7400 made of an elastic body such as a coil spring is extrapolated to the imaging unit mounting portions 5600a, 5600b, and 5600c provided on the back surface of the mirror box 5000.

  Next, the positioning holes 7210a and 7210b of the sensor plate 7200 are fitted and inserted into the imaging unit positioning shafts 5610a and 5610b. The sensor plate 7200 has an insertion hole 7220 at a position corresponding to the washer positioning shaft 5630. At this time, the washer positioning shaft 5630 is inserted into the insertion hole 7220 with a predetermined clearance.

  Next, one of the holes 7515 of the loosening prevention washer 7500 is inserted into the imaging unit positioning shafts 5610a and 5610b and the washer positioning shaft 5630, respectively. At this time, the rotation prevention shape 7510 in which a part of the loosening prevention washer 7500 is formed in a convex shape is locked by the concave grooves of the washer rotation prevention shapes 5620a, 5620b, and 5620c. This prevents the loosening washer 7500 from rotating.

  Next, the flange back adjusting screw 7300 is inserted into one hole 7515 of the holes 7515 of the loosening prevention washer 7500 and fastened to the imaging unit mounting portions 5600a, 5600b, and 5600c, whereby the imaging unit 7000 is attached to the mirror box 5000. Fix it.

  Next, by rotating the flange back adjustment screw 7300, the imaging unit 7000 is moved back and forth in the optical axis direction to adjust the flange back. At this time, the imaging unit 7000 is biased and held at the position where the flange back is adjusted by the elastic force of the flange back adjustment spring 7400.

  Next, the screw head of the flange back adjustment screw 7300 and the loosening prevention washer 7500 are fixed with an adhesive or the like. This prevents the flange back adjustment screw 7300 from loosening in the rotational direction.

  The following conventional techniques are disclosed as other conventional examples.

  In Patent Document 1, an elastic cylinder portion that urges a holding plate that holds an image sensor in a direction away from the lens barrel body in the optical axis direction, and the holding plate is elastic so that the inclination angle of the holding plate with respect to the optical axis can be adjusted. There is disclosed a content that includes a screw that is fixed to the barrel main body against the elastic force of the barrel portion, and the elastic barrel portion is extrapolated to a shaft portion of the barrel main body.

  In Patent Document 2, a CCD is operated by an operation unit that protrudes to the outside of the case from an operation window opened on a side wall surface of the camera chassis that is spaced rearwardly from the lens mount unit along the optical axis direction on the peripheral wall of the case unit of the camera chassis. The content of moving and adjusting the optical axis in the optical axis direction is disclosed.

  As other conventional examples, the following conventional techniques are disclosed.

  Conventionally, in an imaging apparatus such as a digital camera, a configuration using a resin main body having an opening around a photographing optical axis has been proposed. In general, an imaging unit and a mirror box are often attached around the opening around the optical axis. Therefore, as disclosed in Patent Document 3, a configuration is proposed in which a metal plate such as aluminum or stainless steel is processed into a shape having an opening and inserted into a resin body in order to improve the mounting accuracy and reliability of the imaging unit.

  In the prior art shown in FIG. 7, a main body 6000 is proposed in which an insert sheet metal 6100 having an opening around the optical axis is inserted into a resin. In order to firmly join the main body 6000 and the mirror box 5000, a joint portion with the mirror box 5000 is provided on the insert metal plate 6100.

  Patent Document 1 shown below discloses a configuration in which a metal plate having a standing bent portion for fixing an image sensor unit is inserted into a resin body.

JP2012-138664 JP2002-176579 JP2009-14958

  In the conventional image sensor holding structure, imaging unit mounting portions 5600a, 5600b, and 5600c and imaging unit positioning shafts 5610a and 5610b are provided protruding from the back surface of the mirror box 5000 for positioning and fixing the imaging unit 7000. Has been. Further, a washer positioning shaft 5630 for positioning the loosening prevention washer 7500 is provided in a projecting manner. Further, washer rotation prevention shapes 5620a, 5620b, and 5620c, which are partially formed as concave grooves, are provided so as to project. For this reason, the shape of the back surface of the mirror box 5000 is increased.

  On the other hand, the main body 6000 is provided with an imaging unit mounting portion 5600a, an imaging unit positioning shaft 5610a, and a notch portion 6200 for escaping the washer rotation prevention shape 5620a. Further, the main body 6000 is provided with imaging unit mounting portions 5600b and 5600c, an imaging unit positioning shaft 5610b, a washer positioning shaft 5630, and openings 6300a and 6300b for escaping the washer rotation prevention shapes 5620b and 5620c. Yes. Therefore, the notch 6200 and the openings 6300a and 6300b are required to have a sufficient size, and there are problems that the camera is enlarged and the strength is weakened.

  In the prior art disclosed in Patent Document 1, when an external force such as vibration or impact is applied, the screw that adjusts the flange back rotates and the flange back changes.

  In the prior art disclosed in Patent Document 2, there is a problem that the mechanism is complicated, there are many parts, and the camera becomes large.

  In the prior art of FIG. 7 and the prior art disclosed in Patent Document 3, a square-shaped aluminum sheet metal is inserted around the photographing optical axis. With this configuration, in the process of cooling the part during insert molding, there is a concern that the part may be warped due to the difference in linear expansion coefficient between aluminum and resin, and the precision of the part may be reduced. For this reason, if it is going to reduce curvature and improve the dimensional accuracy of components, it will become the conditions where the molding conditions were limited, and it might lead to the increase in manufacturing cost and the fall of mass productivity.

  Moreover, in the prior art of Patent Document 3, a fixing portion for the image sensor unit is provided in the bent portion of the aluminum sheet metal. Since aluminum is excellent in heat transfer, heat generated from an electric circuit or the like inside the camera is easily transferred in the aluminum sheet metal. For this reason, during the operation of the camera, the temperature of the image pickup unit mounting portion rises, and there is a possibility that the position accuracy of the image pickup device is deviated due to thermal expansion, and the flange back changes. Also in the prior art shown in FIG. 7, since the insert sheet metal 6100 is fastened to the mirror box 5000 in the vicinity of the imaging unit mounting portions 5600a, 5600b, and 5600c, the configuration in which the imaging unit mounting portion is likely to be affected by heat in the same manner. It was.

  Moreover, in the prior art of FIG. 7 and Patent Document 3, most of the resin around the optical axis is replaced with a metal plate, which increases the mass of the product.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a main body configuration of an image pickup apparatus that suppresses an increase in mass while ensuring the reliability of a flange back and improves the workability and heat dissipation of parts.

  The imaging apparatus of the present invention includes an imaging unit (2000), an attachment member (100) to which the imaging unit is attached, and imaging unit attachment parts (400a, 400b, 400c) and a main body (1000) in which a metal plate (1100) is inserted into a resin member (1200) having an opening (1901) around the photographing optical axis, and the main body includes a plurality of parts around the opening. The metal plate is fastened to the mounting member by fastening portions (1980a, 1980b, 1980c, 1980d), and the metal plate is formed by cutting out an annular part surrounding the opening.

  Another feature of the present invention is that the metal plate is not provided with a hole (1180b) for attachment with the fastening portion at a location located in the vicinity of the imaging unit attachment portion. It is said.

  Another feature of the present invention is that the metal plate is fastened to the attachment member at a location (1980b) not located in the vicinity of the imaging unit attachment portion of the attachment member.

  Another feature of the present invention is that the metal plate is disposed at least below the opening.

  Another feature of the present invention is that the metal plate has a substantially L shape and is disposed on the left side when viewed from the lower side of the opening and the photographer side.

  Another feature of the present invention is that the heat transfer section (3010) connects the heat source (3400) and the heat radiating section (3300) disposed on the substrate (3000) at a position facing the metal plate. Is arranged.

  As described above, according to the present invention, it is possible to improve the accuracy of parts and reduce the processing cost. Furthermore, high heat dissipation and light weight can be achieved while maintaining the reliability of the flange back.

It is a disassembled perspective view of the camera concerning one Embodiment of this invention. 4 is an exploded perspective view for explaining a method of adjusting the flange back by attaching the imaging unit 2000 to the mirror box 100 in a state where the shutter unit 500 and the main body 1000 are attached to the mirror box 100. FIG. 2A and 2B are a rear view and a cross-sectional view of a state where the imaging unit 2000 is attached to the mirror box 100. It is the figure which fastened the mirror box 100, the shutter unit 500, and the main body 1000. FIG. It is a disassembled perspective view of the main body 1000, and a figure which shows the insert sheet metal 1100. 2 is an exploded perspective view of a main body 1000 and a circuit board 3000. FIG. The conventional example of the holding structure of an image pick-up element is shown.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of a camera according to an embodiment of the present invention.

  The mirror box 100 includes a mount 110 for attaching a photographic lens (not shown), a viewfinder (not shown), an AF sensor (not shown), a mirror 120 rotatably attached to guide the imaging element 2100, and the like. Have The shutter unit 500 includes a focal plane shutter, and includes a shutter unit 540 including a shutter base plate 520 and a shutter curtain 530 having an aperture 510 that allows an imaging light beam to pass through, and a shutter driving unit 550 that controls opening and closing of the shutter unit 540. The shutter drive unit 550 has a mechanism for driving the mirror 120. The main body 1000 has a substantially box shape, and the housing shape of the camera according to the embodiment of the present invention is formed by insert molding of a resin member and a metal. In the imaging unit 2000, an imaging element 2100 including a CMOS sensor or a CCD sensor that takes an imaging light beam from a photographing lens and performs photoelectric conversion is fixed to a sensor plate 2200, and includes an optical component such as an LPF (low-pass filter). The circuit board 3000 connects a processing circuit 3400 for controlling the drive of the camera, a media case (not shown) for storing a recording image including a semiconductor memory card that can be attached to and detached from the camera, and the camera and an external device. An external terminal 3300 is mounted.

  Hereinafter, the holding structure of the image sensor will be described with reference to FIGS. 1 to 3.

  FIG. 1 is an exploded perspective view of a camera according to an embodiment of the present invention.

  First, a method of attaching the shutter unit 500 to the mirror box 100 will be described with reference to FIG.

  On the rear surface of the mirror box 100, shutter unit mounting portions 200a and 200b and shutter unit positioning shafts 210a and 210b for positioning and fixing the shutter unit 500 are provided. The shutter unit 500 is provided with shutter unit positioning holes 560a and 560b at positions corresponding to the shutter unit positioning shafts 210a and 210b described above. As a result, the shutter unit 500 is positioned on the mirror box 100 and fixed to the shutter unit mounting portions 200a and 200b with a fastening member such as a screw 10.

  Next, a method of attaching the main body 1000 to the mirror box 100 will be described with reference to FIG.

  The mirror box 100 is provided with main body attachment portions 300a, 300b, 300c, and 300d and main body positioning shafts 310a and 310b for positioning and fixing the main body 1000. The main body 1000 is provided with main body positioning holes 1950a and 1950b at positions corresponding to the aforementioned main body positioning shafts 310a and 310b. As a result, the main body 1000 is positioned on the mirror box 100 and fixed to the main body attaching portions 300a, 300b, 300c, and 300d with a fastening member such as a screw 10. Here, the main body 1000 and the shutter unit 500 are fastened together at the position of the main body attachment portion 300d. On the other hand, on the back surface of the mirror box 100, an imaging unit mounting portion 400c is projected above the shutter driving portion 550. In addition, an imaging unit attachment part 400b is provided below the shutter drive part 550. Further, an imaging unit mounting portion 400a is projected from a position that forms a substantially equilateral triangle so that the upper and lower sides of the shutter driving unit 550 and the vicinity of the optical axis become the center of gravity. Imaging unit positioning shafts 410a and 410b for projecting the imaging unit 2000 are provided in the vicinity of two imaging unit mounting parts 400a and 400b in the imaging unit mounting parts 400a, 400b, and 400c. The imaging unit positioning shafts 410a and 410b have the same diameter. The main body 1000 has a second opening 1902 at a position corresponding to the imaging unit mounting portion 400c described above. At this time, the imaging unit mounting portion 400c described above is inserted into the second opening 1902 with a predetermined clearance. In addition, the main body 1000 includes a third opening 1903 at a position corresponding to the above-described imaging unit mounting portion 400b and the imaging unit positioning shaft 410b. At this time, the imaging unit mounting portion 400b and the imaging unit positioning shaft 410b are inserted into the third opening 1903 with a predetermined clearance. Further, the main body 1000 has a fourth opening 1904 at a position corresponding to the above-described imaging unit mounting portion 400a and the imaging unit positioning shaft 410a. At this time, the imaging unit mounting portion 400a and the imaging unit positioning shaft 410a are inserted into the fourth opening 1904 with a predetermined clearance.

  Next, a method for adjusting the flange back by attaching the imaging unit 2000 to the mirror box 100 with the shutter unit 500 and the main body 1000 attached to the mirror box 100 will be described with reference to FIGS. .

  FIG. 2 is an exploded perspective view for explaining a method of adjusting the flange back by attaching the imaging unit 2000 to the mirror box 100 in a state where the shutter unit 500 and the main body 1000 are attached to the mirror box 100.

3A is a rear view of the imaging unit 2000 attached to the mirror box 100. FIG.
FIG.3 (b) is the sectional view on the AA line of Fig.3 (a).

  First, the flange back adjustment spring 2400 made of an elastic body such as a coil spring is extrapolated to the imaging unit mounting portions 400a, 400b, and 400c provided on the back surface of the mirror box 100.

  Next, the positioning holes 2210a and 2210b of the sensor plate 2200 are fitted and inserted into the imaging unit positioning shafts 410a and 410b. On the other hand, a washer positioning shaft 1925 (described later) projects from the main body 1000 in the vicinity of the imaging unit mounting portion 400 c of the mirror box 100. Here, in the embodiment of the present invention, the washer positioning shaft 1925 has the same diameter as the imaging unit positioning shafts 410a and 410b. Further, the sensor plate 2200 has an insertion hole 2220 at a position corresponding to the washer positioning shaft 1925. At this time, the washer positioning shaft 1925 is inserted into the insertion hole 2220 with a predetermined clearance.

  Next, one of the holes 2515 of the loosening prevention washer 2500 is inserted into the imaging unit positioning shafts 410a and 410b and the washer positioning shaft 1925, respectively. On the other hand, the main body 1000 is provided with washer anti-rotation shapes 1920a, 1920b, and 1920c that are partially formed as concave grooves. At this time, the rotation prevention shape 2510 in which a part of the loosening prevention washer 2500 is formed in a convex shape is locked by the concave grooves of the washer rotation prevention shapes 1920a, 1920b, and 1920c. This prevents the loosening washer 2500 from rotating.

  Next, the flange back adjustment screw 2300 is inserted into one hole 2515 of the holes 2515 of the loosening prevention washer 2500 and fastened to the imaging unit mounting portions 400a, 400b, 400c, so that the imaging unit 2000 is attached to the mirror box 100. Fix it.

  Next, by rotating the flange back adjustment screw 2300, the imaging unit 2000 is moved back and forth in the optical axis direction, and the flange back is adjusted. At this time, the imaging unit 2000 is biased and held at the position where the flange back is adjusted by the elastic force of the flange back adjustment spring 2400.

  Next, the screw head of the flange back adjustment screw 2300 and the loosening prevention washer 2500 are fixed with an adhesive or the like. This prevents the flange back adjusting screw 2300 from loosening in the rotational direction.

  Here, above the shutter drive unit 550, the mirror box 100 is provided with an imaging unit mounting part 400c, and the main body 1000 is provided with a second opening 1902 at a position corresponding to the imaging unit mounting part 400c. ing. The main body 1000 is provided with a washer rotation prevention shape 1920a. Thereby, the opening range of a main body can be made small. On the other hand, the main body 1000 is provided with reinforcing ribs 1910 around the second opening 1902. A washer rotation prevention shape 1920 a is formed integrally with the reinforcing rib 1910. Thereby, the intensity | strength of the main body 1000 can be increased. Here, as in the embodiment of the present invention, the imaging unit mounting portion 400c needs to be provided outside the shutter driving portion 550. However, when the imaging unit mounting part 400c is provided on the side of the shutter driving unit 550 (in the direction of the arrow X in FIG. 3A), the mirror box 100 has a complicated shape and increases in size. Therefore, it is desirable to provide the imaging unit attachment part 400c above the shutter driving part 550. Further, above the shutter driving unit 550, providing the main body 1000 with a hole or a cutout significantly reduces the strength. Therefore, it is desirable to provide the reinforcing rib 1910 around the second opening 1902.

  Further, below the shutter drive unit 550, the mirror box 100 is provided with an imaging unit mounting part 400b and an imaging unit positioning shaft 410b. The main body 1000 is provided with a third opening 1903 at a position corresponding to the imaging unit mounting portion 400b and the imaging unit positioning shaft 410b. The main body 1000 is provided with a washer rotation prevention shape 1920b. Thereby, the opening range of a main body can be made small. On the other hand, the main body 1000 includes a light shielding rib 1915 that includes a remote control terminal 3301, a USB terminal 3302, an HDMI terminal 3303, and the like to prevent intrusion of external light from the external terminal 3300. Projections are provided between the units 2000. A washer rotation prevention shape 1920 b is formed integrally with the light shielding rib 1915. Accordingly, since the light shielding rib 1915 can be provided in the vicinity of the imaging unit 2000 without providing a notch or the like in the light shielding rib 1915, the camera can be downsized. Here, as in the embodiment of the present invention, the imaging unit mounting portion 400b needs to be provided outside the shutter driving portion 550. However, when the imaging unit mounting portion 400b is provided on the side of the shutter driving portion 550 (in the direction of the arrow X in FIG. 3A), the mirror box 100 has a complicated shape and increases in size. Therefore, it is desirable to provide the imaging unit attachment part 400b below the shutter driving part 550. Further, it is not desirable to provide a hole or a notch between the external terminal 3300 and the light shielding rib 1915 in order to prevent external light from entering from the external terminal 3300. Therefore, it is desirable to provide the imaging unit mounting portion 400b in the vicinity of the light shielding rib 1915 near the optical axis.

  In addition, the imaging unit mounting portion 400a and the imaging unit positioning shaft 410a project from the upper and lower portions of the shutter driving unit 550 and at a position that forms a substantially equilateral triangle so that the vicinity of the optical axis is the center of gravity. The main body 1000 is provided with a fourth opening 1904 at a position corresponding to the imaging unit mounting portion 400a and the imaging unit positioning shaft 410a. The main body 1000 is provided with a washer rotation prevention shape 1920c. Thereby, the opening range of a main body can be made small. On the other hand, as shown in FIG. 3 (b), the main body 1000 has a battery storage portion 1930 having a substantially rectangular cross section parallel to the optical axis for storing the battery, with a predetermined clearance from the mirror box 100. Forming. The battery housing part 1930 has a battery housing part side wall 1935 on the optical axis side. And the washer rotation prevention shape 1920c forms a part of shape on the extension line | wire of the battery storage part side wall 1935 of the optical axis direction (position shown with the dashed-dotted line of FIG.3 (b)). Thereby, since the battery accommodating part 1930 can be provided in the vicinity of the mirror box 100, a camera can be reduced in size. Here, as a method of adjusting the flange back as in the embodiment of the present invention, a method of adjusting the flange back by moving the imaging unit 2000 back and forth in the optical axis direction by rotating the flange back adjustment screw 2300 is adopted. doing. Therefore, it is desirable that the imaging unit mounting portions 400a, 400b, and 400c have the center of gravity near the optical axis. That is, it is desirable to provide the imaging unit mounting portion 400a at a position that forms a substantially equilateral triangle so that the center of gravity is located above and below the shutter driving portion 550 and in the vicinity of the optical axis. Further, it is desirable to provide a battery housing side wall 1935 in the vicinity of the outside of the optical axis of the mirror box 100. However, if a shape such as the washer rotation prevention shape 1920c is formed in the mirror box 100, the opening of the main body 1000 becomes large. Therefore, it is desirable to provide the washer rotation prevention shape 1920c on the main body 1000 and to form a part of the shape on the extension line of the battery housing side wall 1935 in the optical axis direction.

  Hereinafter, the configuration of the main body of the imaging apparatus will be described with reference to FIGS.

  FIG. 4 is a view of the state in which the shutter unit 500 and the main body 1000 are fastened to the mirror box 100 as viewed from the back of the camera. As described above with reference to FIG. 1, the mirror box 100 is provided with main body attachment portions 300 a, 300 b, 300 c, and 300 d. The main body 1000 is provided with mirror box mounting portions 1980 a, 1980 b, 1980 c, 1980 d at positions corresponding to the main body 1000, and is fastened to the mirror box 100 by screws 10.

  FIG. 5A is a perspective view in which the main body 1000 is disassembled into an insert sheet metal 1100 that is a metal plate and a main body resin portion 1200. The insert metal plate 1100 in this embodiment is made of an aluminum alloy. As shown in the drawing, in this embodiment, the insert sheet metal 1100 has a horizontal beam portion 1110 extending from the mirror box mounting portion 1980b toward the 1980c direction below the first opening portion 1901 around the photographing optical axis. is there. The first opening 1901 has a substantially L-shape including a vertical beam portion 1120 that extends upward from the vicinity of the mirror box mounting portion 1980c on the left side when viewed from the photographer side. That is, the insert sheet metal 1100 is in a state in which an annular part surrounding the first opening 1901 is cut away. For this reason, the rigidity of the insert sheet metal itself is greatly reduced as compared with the case where the insert sheet metal has a square shape having an opening around the optical axis as in the prior art described above. Accordingly, when the main body 1000 is formed, even if a difference occurs in the deformation amount of the insert metal plate 1100 and the main body resin portion 1200 due to the difference in the linear expansion coefficient between the aluminum alloy and the resin, the insert metal plate is bent and deformed. It is possible to absorb the difference in quantity. That is, a large warp of the entire component due to a difference in deformation amount can be suppressed as compared with the case where the sheet metal has a square shape as in the prior art. Therefore, among the circuit board attachment portions 1960a, 1960b, 1960c, 1960d, and 1960e of the main body 1000, it is possible to accurately process the dimensions of places away from the optical axis, such as 1960a and 1960b. That is, since the degree of freedom in setting the molding conditions can be secured in mass production, it is possible to prevent a delay due to an increase in cycle time and an increase in cost due to a decrease in yield.

  FIG. 5B is a diagram showing only the insert sheet metal 1100. In the figure, positions indicated by circular dotted lines are positions corresponding to the plurality of mirror box mounting portions 1980a, 1980b, 1980c, and 1980d of the main body 1000. As is apparent from the figure, the mirror box mounting portion 1980b is at the same position as the mounting hole 1180b on the insert metal plate 1100. On the other hand, the mirror box mounting portions 1980a, 1980c, and 1980d do not exist on the insert metal plate 1100. That is, the mirror box mounting portions 1980a, 1980c, and 1980d are provided on the main body resin portion 1200. As shown in FIG. 4, the mirror box mounting portions 1980a, 1980c, and 1980d are disposed in the vicinity of the imaging unit mounting portions 400a, 400b, and 400c, respectively. On the other hand, the attachment portion of the imaging unit 2000 is not disposed in the vicinity of the attachment hole 1180b of the insert metal plate 1100 and the mirror box attachment portion 1980b of the main body 1000. By adopting such a configuration, heat of the insert metal plate 1100 is easily transmitted to the mirror box 100 when the insert metal plate 1100 is in direct contact with the mirror box mounting portion 1980b. However, since the remaining three mirror box mounting portions 1980a, 1980c, and 1980d are provided on the main body resin portion 1200, heat is not easily transmitted to the mirror box 100. Accordingly, even when heat is applied to the insert metal plate 1100, heat is not transmitted to the vicinity of the imaging unit mounting portions 400a, 400b, and 400c, and the main body mounting portion 300b that is remote from the imaging unit mounting portions 400a, 400b, and 400c is large. The amount of heat can be transmitted. For this reason, it is possible to efficiently dissipate heat to the mirror box 100 while preventing the imaging unit mounting portions 400a, 400b, and 400c of the mirror box 100 from being deformed by heat and changing the flange back.

  Next, with reference to FIG. 6, the heat dissipation configuration of the entire camera in the present embodiment will be described. FIG. 6 is an exploded perspective view of the main body 1000 and the circuit board 3000 which are disassembled into the insert sheet metal 1100 and the main body resin portion 1200. On the circuit board 3000, a processing circuit 3400 serving as a heat source that generates high heat when the camera is operated is disposed. As described above, the external terminal 3300 including the remote control terminal 3301, the USB terminal 3302, and the HDMI terminal 3303 is disposed at the left end of the circuit board 3000. Between the processing circuit 3400 and the external terminal 3300, there is a constricted portion 3010 of the circuit board. By providing the constricted portion 3010 on the circuit board 3000 in this manner, the imaging unit 2000 and the circuit board 3000 can be located at substantially the same position in the front-rear direction of the camera, and thus the camera can be reduced in size. is there. However, when heat generated in the processing circuit 3400 is transferred to the external terminal 3300 directly facing the outside of the camera in the circuit board 3000, it is disadvantageous because the thermal resistance increases abruptly at the constricted portion 3010. . In this embodiment, since the horizontal beam portion 1110 of the insert metal plate is disposed at a position facing the constricted portion 3010, the external metal plate 3100 side that receives the heat radiated from the circuit board 3000 and receives the heat from the circuit board 3000 and becomes a heat radiating portion. It is possible to transfer heat. A terminal contact portion 1130 that comes into contact with the HDMI terminal 3303 is provided on the insert metal plate 1100, and heat can be transmitted to the HDMI terminal 3303 from here. Also, heat can be diffused throughout the main body 1000 near the external terminal 3300 by the vertical beam portion 1120 extending in the vertical direction of the camera.

  In addition, since the present embodiment is configured such that the insert sheet metal is disposed at a position that opposes the portion having a high thermal resistance, the weight of the opening can be reduced while maintaining heat dissipation as compared with the case where the entire periphery of the opening is configured by the insert sheet metal. It is possible.

  As described above, by disposing the insert metal plate 1100 at a position facing the constricted portion 3010 that acts as a heat transfer portion of the circuit board 3000, it is possible to efficiently dissipate heat while reducing the size and weight of the camera.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary. For example, although the insert sheet metal 1100 has been described as being substantially L-shaped, it may be substantially C-shaped or substantially U-shaped as long as it does not depart from the present invention.

10 Screw 100, 5000 Mirror box 110 Mount 120 Mirror 200a, 200b Shutter unit mounting portion 210a, 210b Shutter unit positioning shaft 300a, 300b, 300c, 300d Main body mounting portion 310a, 310b Main body positioning shaft 400a, 400b, 400c, 5600a, 5600b 5600c Imaging unit mounting part 410a, 410b, 5610a, 5610b Imaging unit positioning shaft 500 Shutter unit 510 Aperture 520 Shutter base plate 530 Shutter curtain 540 Shutter part 550 Shutter driving part 560a, 560b Shutter unit positioning hole 1000, 6000 Main body 1100, 6100 Insert Sheet metal 1110 Horizontal beam 1120 Vertical beam 1130 Terminal contact Touch portion 1180b Mounting hole 1200 Main body resin portion 1901 First opening portion 1902 Second opening portion 1903 Third opening portion 1904 Fourth opening portion 1910 Reinforcing rib 1915 Light shielding rib 1920a, 1920b, 1920c, 5620a, 5620b, 5620c Washer anti-rotation shape 1925, 5630 Washer positioning shaft 1930 Battery housing part 1935 Battery housing part side wall 1950a, 1950b Body positioning hole 1960a, 1960b, 1960c, 1960d, 1960e Circuit board mounting part 1980a, 1980b, 1980c, 1980d, 5700a, 5700b, 5700c, 5700d Mirror box mounting part 2000, 7000 Imaging unit 2100, 7100 Imaging element 2200, 7200 Sensor plate 2 210a, 2210b, 7210a, 7210b Positioning hole 2220, 7220 Insertion hole 2300, 7300 Flange back adjustment screw 2400, 7400 Flange back adjustment spring 2500, 7500 Loosening prevention washer 2510, 7510 Anti-rotation shape 2515, 7515 Hole 3000 Circuit board 3300 External terminal 3301 Remote control terminal 3302 USB terminal 3303 HDMI terminal 3400 Processing circuit 6200 Notch 6300a, 6300b Opening

Claims (6)

An imaging unit (2000);
An attachment member (100) to which the imaging unit is attached;
An imaging unit mounting portion (400a, 400b, 400c) for mounting the imaging unit provided on the mounting member;
A main body (1000) in which a metal plate (1100) is inserted into a resin member (1200) having an opening (1901) around the photographing optical axis;
The main body is fastened to the attachment member by a plurality of fastening portions (1980a, 1980b, 1980c, 1980d) around the opening,
The metal plate is formed by cutting out an annular part surrounding the opening.   The imaging apparatus according to claim 1, wherein a hole (1180 b) to be attached by the fastening portion is not disposed in a location located in the vicinity of the imaging unit attachment portion on the metal plate.   The imaging apparatus according to claim 1, wherein the metal plate is fastened to the attachment member at a location (1980b) that is not located near the imaging unit attachment portion of the attachment member.   The imaging apparatus according to claim 1, wherein the metal plate is disposed at least below the opening.   The imaging apparatus according to claim 4, wherein the metal plate has an L shape and is disposed on a left side when viewed from a lower side of the opening and a photographer side.   The heat transfer part (3010) connecting the heat source (3400) and the heat radiating part (3300) arranged on the substrate (3000) is arranged at a position facing the metal plate. The imaging device described.

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