JP4981533B2 - Digital still camera - Google Patents

Description

  The present invention relates to a digital still camera, and more particularly to a digital still camera having an LCD display device and a camera accessory mounting member on a camera body.

  A digital still camera that is widely used today has an image display device that uses an LCD (Liquid Crystal Display) panel as a display means for confirming recorded still image data or moving image data during live view. What is becoming common.

  Conventionally, a method for appropriately positioning such an LCD display device in a camera body has been proposed. For example, according to the configuration of Patent Document 1, an LCD assembly including an LCD panel, an LCD cover that supports the LCD panel, and a base that serves as a base for fixing the LCD panel is mounted on a circuit board fixed to the camera body. The support piece provided on the LCD cover and the circuit board are screwed. At this time, the screw is attached with play, and the LCD assembly is in a temporarily positioned state. The final positioning is performed by fitting the contour of the display window portion of the exterior cover to be attached to the periphery of the LCD panel.

  In addition, in an electronic device such as a digital still camera, it is necessary to take measures to prevent erroneous display or failure of the LCD panel due to static electricity generated on the surface of the mounted LCD panel. As a countermeasure, in Patent Document 1, an earth piece elastically pressed against the earth surface of the circuit board is provided on the LCD cover, and the earth piece is pushed deeply into the circuit board side by the exterior cover to secure the earth of the LCD display device. ing.

  Further, due to the two trends of increasing the size of the LCD panel mounted on the camera and reducing the size of the camera body, the area of the display opening relative to the area on the camera rear side is large and the strength on the camera rear side is reduced. However, in the above configuration, since the circuit board supports the LCD display device, sufficient strength of the display opening cannot be ensured, and it is necessary to compensate for insufficient strength by other means.

  In the above configuration, since the LCD assembly including the LCD display device is directly placed on the circuit board, the degree of freedom in designing the circuit board with respect to the arrangement of circuit elements and the like is reduced.

Further, in the above configuration, it is necessary to separately provide a support piece used for temporary positioning of the LCD display device and a ground piece used for grounding, resulting in an increase in parts cost and an increase in assembly man-hours. There was a fear.
JP 2004-252185 A

  The present invention has been made in view of the above circumstances, and enables a highly accurate positioning of an LCD display device and countermeasures against static electricity with a simple structure without impairing the design freedom of a circuit board, and at the same time, the strength of the camera. An object is to provide a digital still camera that can be secured sufficiently.

  In order to solve the above-described object, the present invention provides a digital opening having a display opening for making an LCD display device mounted therein visible from the outside, and an accessory mounting member for mounting a camera accessory. In a still camera, a substantially rectangular metal plate-like member smaller than the LCD display device having at least three positioning pieces used for positioning the LCD display device and an adhesive means for holding the LCD display device The plate-like member is disposed in a region provided between the circuit board and the backside exterior cover, and is configured to be fastened with a base member and a screw fixing the accessory mounting member to the camera body. Is.

  Furthermore, in the above-mentioned invention, the present invention uses a hot shoe provided on the top surface of the camera and a tripod mounting screw hole provided on the bottom surface of the camera as the accessory mounting member.

  Furthermore, the present invention is configured such that, in the above invention, a double-sided tape having conductivity is used as the bonding means.

  According to the present invention, it is possible to position and hold an LCD display device with high accuracy with a simple structure. In addition, the strength of the camera body can be increased, and at the same time, a high mounting strength of the camera accessory mounting member such as an external strobe can be secured and the LCD display device can be protected against static electricity.

  In addition, since the strength of the camera body is increased by the present invention, it is possible to reduce the weight and size of the camera body by appropriately suppressing the thickness of the cover.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is an exploded perspective view showing an internal configuration of a digital still camera according to an embodiment of the present invention, which is disassembled from the back side. FIG. 2 is an exploded perspective view showing the configuration around the hot shoe 6, and FIG. 3 is a plan view around the screw hole 25 for attaching a tripod. FIG. 4 is a cross-sectional view of parts assembly showing the structure around the plate-like member 18.

  The digital still camera shown in FIG. 1 includes a retractable zoom lens 1 and a front exterior case 2a on the front, and a power button 4, a release button 5, a hot shoe 6, and a pop-up strobe 7 on the top. It has. By pressing the release button 5 halfway, the AF of the digital still camera functions and focuses on a desired subject. Subsequently, when the release button 5 is fully pressed, shooting is performed in a preset shooting mode, and the shot image data is recorded on a recording medium (not shown) such as a memory card. Camera accessories such as an external strobe and an external viewfinder are attached to the hot shoe 6, and the pop-up strobe 7 is popped up when strobe light emission is necessary at the time of shooting, and the electric charge stored in the main capacitor 8 is stored. It functions by being supplied to a discharge tube (not shown) in the strobe and emitting light.

  The circuit board 9 is fastened to a required portion of a body frame (not shown) on the inside of the exterior cover by screws at appropriate portions such as a peripheral portion thereof, and necessary circuit elements such as an integrated circuit 10 for controlling the camera are mounted. ing. Further, a metal ground piece 11 to be described later is mounted at an appropriate location on the rear side of the circuit board 9 on the camera. On the right side of the substrate, a cross key 12, a reproduction button 13, and a zoom operation key 14 are provided as operation members. The cross key 12 is composed of five buttons: an UP button, a DOWN button, a RIGHT button, a LEFT button, and an OK button located at the center of the cross key 12. By using these buttons, it is possible to select a shooting mode on the LCD display device 15. Further, when the playback button 13 is operated, the camera is switched to the playback mode, and the image data recorded on the recording medium (not shown) can be confirmed on the LCD display device 15. Further, by operating the zoom operation key 14, the retractable zoom lens 1 can be zoomed to the wide side and the tele side.

  The LCD display device 15 is used for live view at the time of shooting, confirmation of image data, and the like. The LCD panel, a backlight that irradiates illumination light from the back side of the LCD panel, and an LCD frame that covers other than the display surface of the LCD panel It consists of and. From the LCD display device 15, a flexible printed circuit board (FPC) 16 that connects the LCD panel and the circuit board 9 and a lead wire 17 with a connector that supplies power to the backlight are led out.

  The metal plate-like member 18 has three positioning pieces 18 a for positioning the LCD display device 15, one on the upper side end face and two on the right side end face. Further, the LCD display device 15 is bonded to the positioning piece 18a by the conductive double-sided tape 19 while being in contact therewith. The plate-like member 18 is fastened to the screw receiving member 22 shown in FIG. 2 and the tripod screw base 26 shown in FIG. 3 by screws, thereby ensuring the strength of the camera body and at the same time increasing the height of the LCD display device 15. Accurate positioning can be easily achieved. Furthermore, the ground of the LCD display device 15 can be secured, and erroneous display or failure of the LCD panel due to static electricity can be prevented.

  In the back side exterior case 2b covering the circuit board 9 and the like described above, a plurality of display openings 20 for making the LCD display device 15 visible from the outside, and a plurality of the operation members and the like described above are inserted through the outside. An opening 21 for operation is provided, and a protective cover 3 made of acrylic resin larger than the opening 20 for display is attached to the outer frame around the opening, and external force is directly applied to the LCD display device 15. prevent. The back side exterior case 2b is fixed to the body frame by a plurality of screws (not shown).

  FIG. 2 is an exploded perspective view for explaining the structure around the hot shoe. The hot shoe 6 has an electrical connection terminal for communicating with an accessory such as an external strobe, and is fixed to a pedestal 24 provided on a top plate 23 formed of resin by screws and a screw receiving member 22. . The screw receiving member 22 has a screw hole on the back side of the camera, and a high assembling strength of the hot shoe 6 can be obtained by being screwed to the plate-like member 18 described above.

  FIG. 3 is a plan view of a digital still camera according to an embodiment of the present invention as viewed from the bottom side. A tripod mounting screw hole 25 is fixed to a tripod screw base 26 by caulking. The tripod screw base 26 is provided with three screw holes at equal intervals in the peripheral portion of the tripod mounting screw hole 25, and the front side outer cover 2 a and the rear side outer case 2 b are formed in the screw holes. Fastened with screws. Further, the camera bottom is provided with a lid 27 that can be opened and closed on the right side thereof, and a power storage chamber for storing a battery pack for supplying the driving power of the camera and the image data taken therein. And a recording medium storage chamber for storing a memory card or the like for recording the recording medium. The tripod screw base 26 is also provided with a screw hole for fastening the plate-like member 18 described above, and high assembling strength of the tripod mounting screw hole 25 can be obtained by screw-fastening with the plate-like member 18. .

  FIG. 4 is a cross-sectional view of parts assembly for explaining the structure around the plate-like member 18. A CCD image for photographing a subject image taken from the photographing optical system of the retractable zoom lens 1 and outputting the image data. The retractable zoom lens 1 includes an image sensor unit 28 including a solid-state image sensor such as a sensor or a CMOS image sensor and a signal processing unit that inputs image data output from the solid-state image sensor and performs predetermined signal processing. It is fixed on the optical axis. The circuit board 9 is fixed to a body frame inside the back side exterior case 2b, and a metal ground piece 11 is mounted at an appropriate position on the back side of the camera. The ground piece 11 has a shape having elasticity, and includes a screw receiving member 22 of the hot shoe 6 in which the plate-like member 18 is attached to the top surface of the camera, and a tripod mounting screw hole 25 attached to the bottom surface of the camera. By fastening to the tripod screw base 26, the ground piece 11 is pressed against the plate-like member 18, thereby ensuring the necessary grounding of the circuit board 9.

  As in the above-described embodiment, the plate-like member 18 having a plurality of positioning pieces 18 a used for positioning the LCD display device 15, the screw receiving member 22 of the hot shoe 6, and the tripod screw base 26 of the tripod mounting screw hole 25. With a simple structure such that the LCD is fastened with screws, high-precision positioning of the LCD display device 15 and countermeasures against static electricity, improvement of the strength of the camera body, and improvement of the assembly strength of the hot shoe 6 and the screw hole 25 for mounting the tripod are provided. Can be achieved.

  In the digital still camera of the above-described embodiment, the conductive double-sided tape 19 is used as an adhesive means. Instead, a silicon adhesive or the like is used so that the plate member 18 and the back surface of the LCD display device 15 are in contact with each other. Even when the LCD display device 15 and the edge portion of the plate-like member 18 are used and bonded together in this state, it is apparent that the same effect as the present invention can be obtained.

It is a disassembled perspective view of the digital still camera which is one Embodiment of this invention. FIG. 3 is an exploded perspective view around a hot shoe 6. It is a disassembled perspective view around the screw hole 25 for attaching a tripod. FIG. 4 is a cross-sectional view of parts assembly around a plate-like member 18.

Explanation of symbols

11 Ground piece 15 LCD display device 18 Plate member 18a Positioning piece 22 Screw receiving member 26 Tripod screw base

Claims (3)

In a digital still camera having a display opening for making an LCD display device mounted inside visible from the outside, and an accessory mounting member for mounting a camera accessory,
A substantially rectangular metal plate-like member smaller than the LCD display device having at least three positioning pieces used for positioning the LCD display device and adhesive means for holding the LCD display device;
The plate-like member is disposed in an area provided between the circuit board and the back side exterior cover, and is fastened by a base member and a screw fixing the accessory mounting member to the camera body. A digital still camera.   The digital still camera according to claim 1, wherein the accessory mounting member is a hot shoe provided on the top surface of the camera and a screw hole for mounting a tripod provided on the bottom surface of the camera.   The digital still camera according to claim 1, wherein the adhesion unit is a double-sided tape having conductivity.

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