JP2018054664A - Imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging device that optimizes an arrangement of a strobo capacitor and a strobo circuit substrate to achieve miniaturization of the imaging device, and improves a holding performance and impact-resistance performance.SOLUTION: In an imaging device comprising: a strobo unit; a lens mount part; a mirror box unit 3; a front cover unit 7 having a grip part; a main body chassis having a battery accommodation part formed inside the grip part; and a strobo capacitor 12 to be arranged between the mirror box unit 3 and the battery accommodation part, the imaging device has a concave surface that is almost parallel with the mount surface in the front cover unit 7, and a shelf-like reception part that is formed in the main body chassis so as to cover an upper part of the strobo capacitor 12. At a position opposing the front cover concave surface of the shelf-like reception part, the imaging device has: a front cover unit engagement part that is formed in the front cover unit 7; and main body chassis engagement parts 91b and 91c in vertical/lateral and depth three directions of the imaging device.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a digital single lens reflex camera, and more particularly to a main body configuration in a camera having a strobe condenser.

  A conventional imaging apparatus has a built-in strobe, and a strobe condenser and a strobe substrate are provided for light emission. In order to reduce the size of the image pickup apparatus, various proposals have been made as to how elements constituting the image pickup apparatus such as a strobe capacitor are arranged inside the image pickup apparatus.

  As shown in Patent Document 1, an imaging device has been proposed that achieves downsizing in an instant camera with a built-in strobe by a device such as a drive motor and a strobe capacitor sandwiched between a cover member that covers the bottom surface of the main body and a light shielding cylinder. Yes. In addition, a strobe capacitor generally requires a larger capacity than other capacitors. For this reason, the weight of the stroboscopic capacitor itself increases, and countermeasures against impacts when dropped are also an issue.

  Therefore, as shown in Patent Document 2, as a countermeasure against an impact on the strobe capacitor and the strobe substrate, the cantilever spring-shaped portion provided on the main body component of the strobe capacitor and the strobe substrate connecting the strobe capacitor floats in a certain direction. The structure which has a receiving shape in the surface facing a buoyancy spring shape part is proposed. In this configuration, when an impact is applied, the cantilever spring is deformed, and the main capacitor and the strobe board are integrally held so as to be movable in a certain direction, so that the electrical connection is not easily broken. An imaging apparatus has been proposed.

JP-A-10-39404 JP 2011-113058 A

  As shown in the previous case, as considerations in considering the optimum layout of the strobe capacitor, the downsizing of the imaging device and the countermeasures against impacts are the concerns. Conventionally, a configuration in which a strobe capacitor is laid out on the inner side of the front end of an imaging device hold shape formed by a front cover as in the imaging device described in Patent Document 2 is generally used. Furthermore, in the said structure, it became the structure which has a battery accommodating part in the imaging device back side (imaging device hold shape base part) of a strobe capacitor.

  In the image pickup apparatus having such a configuration, when the photographer holds the image pickup apparatus, the length of the finger hold of the image pickup apparatus hold part (the length from the image pickup apparatus hold shape tip to the root part) is included in the battery storage part. Cannot be set long. As a result, in the conventional strobe capacitor and battery housing arrangement configuration, there is a problem that the holdability of the image pickup apparatus is lowered as the entire image pickup apparatus is downsized.

  The object of the present invention is to reduce the size of the image pickup apparatus main body, while efficiently arranging the capacitor for the strobe, the strobe board, and the battery storage portion, while ensuring the holdability of the image pickup apparatus, The object is to provide a high imaging device.

In order to achieve the above object, an imaging apparatus according to the present invention includes:
Holds the strobe unit (2), the lens mount (5), the mirror (4) that reflects the photographic light flux and guides it to the finder optical system, the mirror box unit (3) that surrounds the mirror (4), and the imaging device A front cover part (7) having a grip part (72), a main body chassis (9), and a strobe condenser (12). The front cover part (7) includes the mount part (5) and A battery housing is formed between the grip portion (72) and has a surface substantially parallel to the XY plane on the photographer side with respect to the mount surface (5), and is formed by a main body chassis (9) inside the grip portion. A strobe condenser (12) is disposed between the mirror box unit (3) and the grip part (72), and the main body cover is disposed so as to cover the top of the strobe condenser (12). The chassis (9) has a shelf-like receiving part (91), and an engaging part (71) formed on the front cover unit (7) at the front end part thereof, and the vertical, horizontal, and depth of the imaging device (1) It has the engaging part (91a, 91b, 91c) of these 3 directions.

  According to the present invention, it is possible to provide an imaging device with high impact resistance performance while ensuring holdability of the imaging device.

(A) is a top view in the assembled state of the front cover unit of the image pickup apparatus according to the embodiment of the present invention, (b) is an enlarged view of the enlarged portion C of FIG. 1 (a), and (c) is FIG. 1 (b). Sectional view along section line EE The perspective view of the imaging device which is an Example of this invention FIG. 1 is an exploded perspective view of an exterior portion of an imaging apparatus that is an embodiment of the present invention. 1 is an exploded perspective view of an internal structure of a front direction of an image pickup apparatus that is an embodiment of the present invention. (A) is a front perspective view of a main unit of an image pickup apparatus that is an embodiment of the present invention, and (b) is an enlarged view of an enlarged portion A of FIG. (A) is a rear perspective view of a front cover unit of an image pickup apparatus that is an embodiment of the present invention, and (b) is an enlarged view of an enlarged portion B of FIG. (A) is sectional drawing in sectional line DD of FIG. 1 (a), (b) is an enlarged view in the enlarged part F of FIG. 7 (a), (c) is sectional line G-- of FIG. 7 (a). Cross section at G

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[Example]
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings.

  FIG. 2 is a perspective view of a digital single-lens reflex camera main body 1 (hereinafter referred to as a camera main body) which is an image pickup apparatus main body of the present embodiment. A camera built-in strobe unit 2 (strobe device) that pops up with respect to the camera body 1 is provided at the upper center of the camera body 1. The camera built-in strobe unit 2 irradiates the subject with illumination light. This perspective view shows a state in which the flash unit 2 is moved to the light emitting position.

  Reference numeral 3 denotes a mirror box unit, which is arranged so as to surround a space driven by a main mirror 4 for reflecting and guiding a photographing light beam to a finder optical system. Usually, the surface of the photographic light flux is treated with light-shielding paper or the like so as not to cause internal reflection. A mount unit 5 fixes a detachable photographic lens unit (not shown) to the camera body 1. Reference numeral 6 denotes a lens lock release button. The photographing lens unit can be detached from the camera body 1 by pressing the lens lock release button 6.

  Next, the assembly direction of the exterior member with respect to the main unit 8 in the embodiment of the present invention will be described with reference to FIG. FIG. 3 is an exploded perspective view of the front-side exterior portion of the image pickup apparatus of the present embodiment. With respect to the main body unit 8 including the mirror box unit 3, the top cover unit 11 covering the upper surface portion of the imaging device is from the upper surface direction, and the front cover unit 7 covering the front surface portion of the imaging device is parallel to the optical axis in the front direction. The back cover unit 10 covering the part is assembled in parallel with the optical axis in the back direction.

  Next, the layout configuration of the main unit 8 in the embodiment of the present invention will be described with reference to FIG. FIG. 4 is an exploded perspective view of the internal structure in the front direction of the imaging apparatus according to the embodiment of the present invention.

  The main unit 8 includes two main units, a mirror box unit 3 and a main unit chassis 9. The mirror box unit 3 has the finder optical system and the main mirror 4 described above. A strobe circuit board 13 on which a strobe capacitor 12 is mounted is attached to the image pickup apparatus grip side surface portion of the mirror box unit 3. The main body chassis 9 has a configuration in which a metal sheet metal is insert-molded into resin, and has a main body chassis battery housing portion 92 that is molded from resin. After the strobe circuit board is fixed to the mirror box unit 3 by the strobe circuit board fixing screw 13a, the strobe circuit board is assembled so as to be inserted into the main body chassis portion 9 in the optical axis direction (the Z direction in the figure). .

  Next, the shape of the front cover engaging portion of the main unit 8 in the embodiment of the present invention will be described with reference to FIG. FIG. 5A is a front perspective view of the main unit of the imaging apparatus according to the embodiment of the present invention. FIG.5 (b) is an enlarged view in the enlarged part A of Fig.5 (a).

  A shelf-like receiving portion 91 is formed of a resin member on the main body chassis 9 so as to cover the upper surface portion of the main capacitor 12. A body chassis depth direction engaging portion 91a is formed at a front end portion of the shelf-like receiving portion 91 on a surface facing the assembly direction (the Z direction in the figure) of the front cover unit 7 with respect to the body unit 8. In addition, a body chassis lateral engagement portion 91b is provided in the imaging device direction (Y direction in the drawing) on a surface parallel to the assembly direction of the front cover unit 7 with respect to the body unit 8 and corresponding to the imaging device lateral direction (X direction in the drawing). A main body chassis vertical direction engaging portion 91c is formed on the opposing surface. A main body chassis horizontal direction mirror box unit contact portion 91d is formed further closer to the optical axis of the main body chassis horizontal direction engaging portion 91b.

  Next, the shape of the engaging portion of the main body unit 8 of the front cover unit 7 in the embodiment of the present invention will be described with reference to FIG. FIG. 6A is a rear perspective view of the front cover unit of the imaging apparatus according to the embodiment of the present invention. FIG. 6B is an enlarged view of the enlarged portion B of FIG.

  The front cover unit 7 has a front cover body chassis direction protruding portion 71, and the front cover depth is formed at the front end of the protruding portion on the surface facing the assembly direction of the front cover unit 7 with respect to the body unit 8 (the Z direction in FIG. 3). A direction engaging portion 71a is formed. Further, a front cover lateral engagement portion 71b is provided in the imaging device direction (Y direction in the drawing) on a surface parallel to the assembly direction of the front cover unit 7 with respect to the main body unit 8 and corresponding to the lateral direction (the X direction in the drawing). A front cover vertical direction engaging portion 71c is formed on the opposing surface.

  Next, with reference to FIG. 1, an engagement state of the engaging portion between the main unit 8 and the front cover unit 7 in the embodiment of the present invention in the horizontal direction and the vertical direction of the imaging device will be described.

  FIG. 1A is a top view in the assembled state of the main unit 8 and the front cover unit 7 of the imaging apparatus according to the embodiment of the present invention. FIG.1 (b) is an enlarged view in the enlarged part C of Fig.1 (a), and FIG.1 (c) is sectional drawing in the sectional line EE of FIG.1 (b). A cross-sectional line EE is a cross-sectional line where the main body chassis 9 and the front cover unit 7 are engaged.

  As shown in FIG. 1C, in the state where the front cover unit is assembled to the main body chassis, the front cover lateral engagement portion 71b has a gap α corresponding to the gap α at a position opposite to the main body chassis lateral engagement portion 91b. It is in a state of being arranged with a gap. Further, the front cover lateral direction engaging portion 71c is disposed at a position opposite to the main body chassis vertical direction engaging portion 91c with a gap corresponding to the gap β.

  Next, the imaging device depth direction state of the engaging portion of the main unit 8 and the front cover unit 7 in the embodiment of the present invention will be described with reference to FIG. FIG. 7A is a cross-sectional view taken along a cross-sectional line DD in FIG. FIG.7 (b) is an enlarged view in the enlarged part F of Fig.7 (a). FIG.7 (c) is sectional drawing in the sectional line GG of Fig.7 (a).

  As shown in FIG. 7B, in the state where the front cover unit is assembled to the main body chassis, the front cover depth direction engaging portion 71a has a gap γ corresponding to the position opposite to the main body chassis depth direction engaging portion 91a. It is in a state of being vacated. By setting the gap α, the gap β, and the gap γ, even if the front cover unit 7 is slightly distorted when the photographer holds the imaging device, there is no interference with the main body chassis 9 due to the gap. It can be set as the structure which a friction noise does not generate | occur | produce.

  As shown in FIG. 7 (c), the engaging portion area H between the main body chassis 9 and the front cover unit 7 described above is from the finger hook portion of the front cover grip portion which is the optical axis side ridge line of the front cover grip portion. Is also set closer to the optical axis side. When receiving a strong impact from the outside due to dropping or the like, the front cover unit 7 is greatly deformed. For example, when the imaging device falls with the grip portion down, an impact force F is applied to the front cover grip portion 72 in the imaging device.

  At that time, the front cover grip end is deformed so as to fall in the direction of deformation f around the rotation center g, but when the amount of deformation of the front cover unit 7 exceeds the gaps α, β, γ, respectively. Since the main body chassis 9 abuts on the front cover unit 7, deformation of the front cover unit 7 can be suppressed.

  Further, as shown in FIG. 6C, the front cover grip 72 is deformed by forming a receiving portion 91d on the strobe circuit board fixing screw 13a shaft attached to the side surface of the mirror box unit 3 in the main body chassis 9. Can be suppressed even in the mirror box unit 3, so that a structure having high impact resistance can be obtained. As a result, the configuration can reduce the impact on the strobe capacitor.

  As shown in FIG. 7A, the front cover unit 7 is made of a non-conductive member by using the mount side terminal 12b as the positive terminal and the main body chassis side terminal 12a as the negative terminal of the two terminals of the strobe capacitor. In the case where the structure is formed and the main body chassis has conductivity, the following effects can be obtained. It is possible to secure the distance between the high voltage part and the main body chassis conductive part by moving the positive terminal away from the main body chassis conductive part. In order to maintain a stable ground voltage as a reference voltage for the image pickup device circuit section in a part of the main body chassis, a member made of a metal having a large electric capacity may be used for stable driving of the electric element and radiation noise. Effective in characteristics. Since the main body chassis side terminal 12a of the strobe capacitor 12 serves as a negative electrode terminal, the camera main body 1 can be configured without inserting an insulating member between the main body chassis conductive portion.

  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.

DESCRIPTION OF SYMBOLS 1 Camera body, 2 Strobe unit, 3 Mirror box unit, 4 Mirror which reflects imaging light flux and guides to finder optical system, 5 Lens mount part, 6 Lens lock release button, 7 Front cover unit, 71 Front cover body projecting part toward chassis 71a Front cover depth direction engaging part, 71b Front cover lateral direction engaging part, 71c Front cover vertical direction engaging part, 72 Front cover grip part, 72a Finger cover part of front cover grip part, 8 body unit, 9 body Chassis, 91 Main body chassis shelf-shaped receiving portion, 91a Main body chassis depth direction (Z direction) engagement portion, 91b Main body chassis lateral direction (X direction) engagement portion, 91c Main body chassis vertical direction (Y direction) engagement portion, 91d Body chassis lateral direction (X direction) mirror box unit Contact portion, 92 Main body chassis battery housing portion, 10 Back cover unit, 11 Top cover unit, 12 Strobe capacitor, 12a Strobe capacitor main body chassis side terminal, 12b Strobe capacitor mount side terminal, 13 Strobe circuit board, 13a Strobe circuit board fixing screw , 13b Strobe circuit board fixing screw center line, 14 Shooting optical axis

Claims (8)

A strobe unit (2), a lens mount unit (5), a mirror box unit (3) surrounding a mirror (4) that reflects a photographic light beam and guides it to a finder optical system, and a grip unit (72 ), A main body chassis (9) having a battery storage part (92) formed inside the grip part, the mirror box unit (3), and the battery storage part (92). ) Between the mount portion (5) and the battery storage portion (92) on the front cover portion (7). A shelf-like receiver formed on the main body chassis (9) so as to cover the upper portion of the strobe condenser (12) and having a concave surface parallel to the mount surface located closer to the photographer. A front cover unit engaging portion (71) formed on the front cover unit (7) at a position opposite to the front cover concave surface of the shelf-shaped receiving portion (91) An image pickup apparatus having main body chassis engaging portions (91a, 91b, 91c) in three directions of vertical, horizontal, and depth of the apparatus (1). The front cover unit (7) is configured to be assembled in parallel to the optical axis direction (14) with respect to the main body chassis (9). The front cover unit (7) and the main body chassis (9) Depth direction engaging portions (71a, 91a) are provided on a surface orthogonal to the assembling direction parallel to the axis, and lateral engaging portions (71b, 91b) and vertical engaging portions (71c, 91b) are provided on surfaces parallel to the assembling direction. 91c). The imaging apparatus according to claim 1. The main chassis engaging portions (91a, 91b, 91c) and the front cover unit engaging portions (71a, 71b, 71c) have a gap (α) when a force (F) from the outside of the drop impact is not applied. , Β, γ) are set, and the imaging apparatus according to claim 1 or 2. The main body chassis engaging portion (91a, 91b, 91c) and the front cover unit engaging portion (71a, 71b, 71c) are arranged so that the photographing optical axis (7d) is closer to the optical axis side of the front cover grip portion than the finger hook portion (7d). The imaging apparatus according to any one of claims 1 to 3, wherein the imaging apparatus is set at a position close to 14). The main body chassis (9) has a contact portion (91d) with the mirror box unit on the optical axis side of the imaging device lateral engagement portion (91b) with the front cover unit (7), and is subjected to a drop impact. The deformation in the optical axis direction of the front cover grip part (72) when receiving an external force (F) is suppressed by contacting with the mirror box unit (3). 5. The imaging device according to any one of 4. The contact portion on the mirror box side is a strobe circuit board fixing screw (13a) for fixing the strobe circuit board (13) on which the strobe capacitor (12) is mounted to the side surface of the mirror box unit (3). The imaging apparatus according to claim 5. The battery storage unit (92) includes a battery (not shown) having a rectangular parallelepiped shape, and the longest side is the vertical direction of the imaging device, and the second longest side is the optical axis of the imaging device (not shown). 14. The imaging device according to claim 1, wherein the imaging device has a shape that can be stored in a direction parallel to 14). The main body chassis (9) is made of a conductive member, the front cover unit (7) is made of a non-conductive member, and the cathode terminal (12a) of the two terminals of the strobe capacitor (12). The image pickup apparatus according to any one of claims 1 to 7, wherein a front cover unit side and an anode terminal (12b) are arranged on a main body chassis side.