JP2019168639A - Imaging device - Google Patents

Abstract

To provide an imaging device without affecting the appearance of the imaging device, which prevents a local temperature rise and has a display device capable of opening/closing operations with excellent downsizing and assembling workability and rotating operations.SOLUTION: An imaging device 1 includes: a display device 3; a hinge part 2 capable of opening/closing operations and rotating operations of the display device; a first electronic circuit board 25; a second electronic circuit board 29; a first heat generator 24 in the first electronic circuit board; a second heat generator 34 in the second electronic circuit board; a cable harness 32 connecting the first and second electronic circuit boards; and a flexible print board (FPC) 31 connecting a display unit of the display device and the second electronic circuit board, the first and second heat generators arranged so as not to be in a substantially overlapping state. The cable harness is located in nearly the center of the hinge part, the cable harness and the FPC extend from the same end surface of the display device in a substantially overlapping state, and a notch is provided as an escaping part of the cable harness in a part of the FPC.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an imaging apparatus having a display device that can be opened and closed and rotated, and more particularly to a structure for achieving heat countermeasures for the imaging apparatus and miniaturization of the display device.

  2. Description of the Related Art Conventionally, in an imaging apparatus such as a digital camera, a signal that is output from an imaging element is displayed on a display device provided on the exterior of the imaging apparatus, and has a live view function that enables confirmation of composition and exposure before shooting. There is something. In such an imaging device, in order to ensure the visibility of the display device at an extreme low angle or high angle, as in Patent Document 1, the imaging device body is mounted so that it can be opened and closed and rotated. A device equipped with the vari-angle display device has been proposed. According to this, the CPU (first heating element) mounted on the electronic circuit board inside the imaging device is arranged on the right side when viewed from the back side of the imaging device.

  Further, the backlight (second heating element) for displaying the vari-angle display device is arranged on the right side when viewed from the rear side of the imaging device when the vari-angle display device is fully closed. Further, in the vari-angle display device, a cable harness that electrically connects the electronic circuit board of the imaging device and the vari-angle display device extends from the vari-angle hinge side provided in the display device.

  On the other hand, a flexible printed circuit board (hereinafter referred to as FPC) that electrically connects the vari-angle display device and the electric circuit board of the vari-angle display device is extended from the opposite side of the vari-angle hinge portion provided in the display device. Yes.

  Further, Patent Document 2 proposes a display device having a pressure resistance against an external force of the protective frame by providing a hole in the wiring sheet through which the protective frame for protecting the vari-angle display device is inserted. .

JP 2012-60508 A JP 2010-79001 A

  However, in the conventional technique disclosed in Patent Document 1 described above, when the vari-angle display device is in a fully closed state, a CPU (first heating element) and a backlight (second heating element) serving as a heat source are substantially stacked. It becomes a state. In this case, it is conceivable that the temperature of the imaging device increases locally, and in some cases, the electric element is thermally destroyed. In order to prevent these problems, a camera that incorporates specifications that limit the recording time in a recording function that consumes a large amount of power, such as a recording function that consumes a large amount of power, in a region where there is a concern about temperature rise. Has been proposed. However, if the recording time is restricted for the user, the usage environment is restricted.

  On the other hand, the cable harness needs to be bent so as to avoid the TFT module in order to prevent disconnection of the cable harness, and a bending space for that purpose is required. Further, the FPC needs to be folded back 180 ° in the vicinity of the extension portion in order to connect to the electronic circuit board disposed on the back surface of the TFT module, and a space for folding back is necessary. That is, since a certain space is required on both sides of the vari-angle hinge part side and the opposite side of the vari-angle hinge part, in this configuration, it is difficult to reduce the size of the display device.

  In the prior art disclosed in Patent Document 2, when this configuration is adopted for a vari-angle display device that has a vari-angle hinge unit that can be opened and closed and rotated, an FPC is placed outside the vari-angle hinge unit. The problem of exposure will occur.

  As described above, the object of the present invention is to realize an imaging device having a display device that can be opened and closed and rotated with good miniaturization and good assembly workability without affecting the external appearance. It is to be.

  In order to achieve the above object, the present invention provides a flat display device, a hinge portion that enables opening / closing operation and rotation operation of the display device, a first electronic circuit board provided in the imaging device, A second electronic circuit board provided in the display device; a first heating element disposed on the first electronic circuit board; a second heating element disposed on the second electronic circuit board; A cable harness connecting the first electronic circuit board and the second electronic circuit board; a flexible printed circuit board connecting the display unit of the display device and the second electronic circuit board; In the imaging device in which the one heating element and the second heating element are arranged so as not to be substantially stacked, the cable harness is located in a substantially central part of the hinge part, and the cable harness and the FPC Is the display device And extend in a substantially stacked from the same end face, characterized in that it provided a notch serving as a relief portion of the cable harness to a portion of the FPC.

  According to the present invention, it is possible to realize an imaging device having a display device that can be opened and closed and rotated with a small size and good assembling workability without affecting the external appearance, while preventing a local temperature rise. Can do.

The external appearance perspective view which looked at the display apparatus of the imaging device which concerns on one embodiment of this invention from the back side in the fully-closed state and the fully-open state. The perspective view which shows the detail of the internal structure seen from the back side by making the display apparatus of the imaging device which concerns on one embodiment of this invention into a full open state. The disassembled perspective view of the display apparatus of the imaging device which concerns on one embodiment of this invention. The perspective view which shows the detail of FPC which concerns on one embodiment of this invention. The perspective view which shows the internal structure of a hinge part and a display apparatus. 1 is a rear view, a cross-sectional view, and a detailed view of a display device showing a characteristic configuration of an imaging apparatus according to a first embodiment of the present invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. An embodiment of an imaging apparatus having a vari-angle display device according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is an external perspective view of the image pickup apparatus 1 of this embodiment as viewed from the photographer side. FIG. 1A shows a fully closed state of the display device 3, and FIG. 1B shows a fully opened state of the display device 3. Hereinafter, the subject side is the front side, the photographer side is the rear side, and the horizontal direction is based on the direction viewed from the photographer side. In addition, the front-rear and left-right directions for the components of the display device 3 are referred to as directions in the fully closed state.

  As shown in FIG. 1A, a display device 3 is connected to an imaging device 1 via a hinge portion 2 so as to be able to be opened and closed and rotated. The hinge portion 2 is covered with a cover 2 (a) made of resin. As shown in FIG. 1B, the imaging apparatus 1 is provided with a main body power switch 4 for turning on / off the power, a release switch 5, and an operation button group 6 for performing various operations.

  The image pickup apparatus 1 is provided with a finder 7. In this embodiment, an optical finder is shown as an example. The back cover 8 constituting the exterior of the imaging device 1 is made of resin. The display device 3 includes a display unit 9 for displaying captured and reproduced images, shutter speed, aperture value, number of captured images, menu, and the like. The display unit 9 is, for example, an LCD module configured from a liquid crystal display (hereinafter referred to as LCD: Liquid Crystal Display).

  An imaging element and a photographing optical system, which will be described later, are arranged inside the imaging apparatus 1, and a subject image incident from the optical axis direction is formed on the imaging element by the imaging optical system. The hinge portion 2 is integrated with the back cover 8, and the display device 3 is rotated by the hinge portion 2 and is coupled to the imaging device 1 so as to be opened and closed. The photographer can rotate the first rotation center axis A of the hinge unit 2 and further rotate the second rotation center axis B of the hinge unit 2 while the display device 3 is open, so that the photographer has a more free angle. You can shoot with

  The internal configurations of the imaging device 1 and the display device 3 will be described with reference to FIG. FIG. 2 shows a state in which the display device 3 is rotated so that the display unit 9 faces the front side after the display device 3 is fully opened. FIG. 2 is a perspective view of the imaging apparatus 1 as viewed from the back side. In order to describe the internal configuration of the imaging device 1, a part of the exterior cover of the imaging device 1 / hinge unit 2 / display device 3 is not displayed.

  The hinge 2 is positioned and fixed to a metal plate 22 that is positioned and fixed to the back cover 8 (not shown). This is because the photographer is not easily damaged when an excessive load is applied to the display device 3 while using the imaging device 1 or when the display device 3 is accidentally collided. The metal plate 22 is firmly fixed. Reference numeral 23 denotes a main chassis, which requires strength as a housing of the imaging apparatus 1, and therefore, in this embodiment, a resin and metal insert configuration is adopted. A first electronic circuit board 25 including a CPU (first heating element) 24 for driving the imaging device 1 is disposed on the rear side of the main chassis 23 and is positioned and fixed to the main chassis 23. .

  On the camera optical axis of the first electronic circuit board 25, an image sensor unit 100 having an image sensor is disposed. Since the imaging device 1 is thin, a region corresponding to the imaging element unit 100 of the first electronic circuit board 25 is cut out. The image sensor unit 100 and the first electronic circuit board are electrically connected via the connection portion 102 by the FPC 101 extended from the right side of the image sensor unit 100. In this embodiment, the CPU (first heating element) 24 gives priority to the communication efficiency of the image sensor, and the vicinity of the connection portion 102 of the FPC 101 to the first electronic circuit board 25, that is, the rear surface indicated by the hatched portion. It is arranged on the right side of the first electronic circuit board 25 when viewed from the side.

  Next, the internal configuration of the display device 3 will be described with reference to FIGS. FIG. 3 is an exploded perspective view of the display device 3. FIG. 4 is a perspective view showing details of the FPC according to the embodiment of the present invention. As shown in FIG. 3, the display device 3 includes a front case 26, a display unit 9, a pasting member 27 for fixing the display unit 9 to the front case 26, a holding member 28, a second electronic circuit board 29, a rear A case 30 or the like is included. Reference numeral 34 denotes a backlight which uses a plurality of LEDs and the like. The FPC 31 includes a backlight (second heating element) 34 for displaying the display unit 9, and considering the communication efficiency of the backlight (second heating element), the backlight (first heating element) of the display device 3. (Second heating element) 34 is extended from the vicinity.

  In the present embodiment, the backlight (second heating element) 34 is disposed on the hinge portion 2 side of the display portion 9. That is, as described above, since the CPU (first heating element) 24 is provided on the right side when viewed from the back side, the backlight (second heating element) 34 is the CPU when the imaging device 1 is fully closed. By disposing the first heating element 24 so as not to be substantially laminated, the heating part is dispersed. By doing so, since a local temperature rise is avoided, problems that restrict the user's usage environment such as thermal destruction of electric elements and limiting the recording time can be avoided.

  As shown in FIG. 4, after the FPC 31 is extended from the display unit 9, it is folded back 180 ° so as to change its orientation. Thereafter, the display unit 9 and the second electronic circuit board 29 are electrically connected by being connected to the connector 29 (a) on the second electronic circuit board 29 attached to the holding member 28. The second electronic circuit board 29 has a substantially rectangular shape, and is mounted with a driver and peripheral circuits for driving the display unit 9 and the backlight (second heating element) 34. In the region where the FPC 31 is folded back by 180 °, the escape portion 50 is provided in a range substantially corresponding to the center in the vertical direction of the display portion 9, which will be described later.

  The end 32 (a) on the display device 3 side of the cable harness 32 inserted through the hole 45 of the hinge 2 is connected to a connector 29 (b) provided on the second electronic circuit board 29. On the other hand, the end portion 32 (b) on the imaging device 1 side is connected to a connector 33 provided on the first electronic circuit board 25. For this reason, the cable harness 32 supplies power from the first electronic circuit board 25 to the second electronic circuit board 29 and signals for display contents.

  The holding member 28 has conductivity, and holds the rear surface of the display unit 9 and its side surface so as to wrap around the front surface side, and the second electronic circuit board 29 is positioned and fixed on the rear surface side. On the upper and lower sides of the holding member 28, arm portions 28 (a) for loosening the front case 26 are provided. A plurality of fixing portions 28 (b) for fixing the rotating sheet metal 40, the front case 26, and the rear case 30 provided on the hinge portion 2 are disposed on the left and right sides of the holding member 28. Further, the holding member 28 is provided with a plurality of cut and raised shapes 28 (c) provided with steps substantially the same as the thickness of the second electronic circuit board 29. The cut and raised shapes 28 (c) provide the second electronic circuit board. The thickness of the display device 3 is suppressed by fixing 29 with screws.

  As described above, in this embodiment, both the FPC 31 and the cable harness 32 are configured to extend from the hinge portion 2 side.

  Next, the structure of the hinge part 2 is demonstrated using FIG. Note that the posture of the display device 3 shown in FIGS. 5A and 5B is the same as the posture described in FIG. FIG. 5A illustrates the internal configuration of the hinge unit 2 and the display device 3, and the rear case 30 of the display device 3 and the cover 2 (a) of the hinge unit 2 are not displayed.

  As shown in FIG. 5A, the hinge portion 2 is mainly composed of a base sheet metal 38, an opening / closing sheet metal 39, and a rotating sheet metal 40, and is composed of a metal member having high strength and conductivity. In addition, the display device 3 includes a torque spring (not shown) that generates a sliding torque when the display device 3 is opened and closed and rotated, and a stopper member that restricts opening and closing and rotation. The rotating sheet metal 40 is positioned with respect to the rear case and the outer shape. The hinge portion 2 is positioned with high accuracy using positioning holes 38 (a) and (b) provided in the base metal plate 38 and convex portions (not shown) of the metal plate 22, and screws 40 (a) and (b ).

  After the cable harness 32 inserted into the hole 45 of the hinge 2 described above is inserted into the hollow rotary shaft 41 provided in the hinge 2 and once bent downward by 90 ° in the hinge 2. The hollow opening / closing shaft 42 orthogonal to the rotation shaft 41 is inserted into the first electronic circuit board 25. In order to prevent the cable harness 32 from being disconnected during the opening / closing rotation operation, the cable harness 32 is provided with a covering portion.

  Next, the positional relationship between the FPC 31 and the cable harness 32 in the display device 3 will be described. First, the route of the FPC 31 will be described. As described above, the FPC 31 is extended from approximately the center in the vertical direction of the display device 3 and then folded back by 180 ° in order to avoid interference with the rotating sheet metal 40 and change the direction. That is, a certain space is required to turn the FPC 31 180 ° with respect to the extending direction. After that, it extends in a substantially horizontal direction while getting over the holding member 28, thereby being connected to a connector 29 (a) mounted at a substantially central portion in the vertical direction of the second electronic circuit board 29 at the shortest distance.

  Next, the route of the cable harness 32 will be described. Since the hole 45 of the hinge portion 2 is the center of the rotation axis of the display device 3 and is positioned at the center of the display device 3 in the vertical direction, the cable harness 32 extends from the center of the display device 3 in the vertical direction. Will be extended. In addition, since the display unit 9 is disposed immediately after going from the hole 45 of the hinge unit 2 toward the second electronic circuit board 29, the cable harness 32 is avoided in order to avoid interference between the cable harness 32 and the display unit 9. Need to bend. That is, in order to bend the cable harness 32, a certain space in the bent portion is required.

  Thereafter, the cable harness 32 is detoured once and connected to the connector 29 (b) mounted on the first electronic circuit board 29 so as to avoid a place where the FPC 31 gets over the holding member 28. By doing so, the FPC 31 and the cable harness 32 can be arranged so as not to interfere with each other, so that the thickness space of the display device 3 can be minimized.

  Furthermore, in the present embodiment, the cross-sectional shape of the cable harness 32 is changed from the circular shape 32 (c) to the flat plate shape 32 (d). That is, when the cable harness 32 is inserted through the hollow rotary shaft 41, the diameter of the rotary shaft 41 is not increased, and the rotary harness 41 contacts and wears when the rotary shaft 41 rotates. The circular shape 32 (c) is used so that there is no occurrence. Thereafter, the region until the connector 29 (b) is connected is formed into a flat plate 32 (b) in order to suppress the thickness direction of the display device 3.

  The thickness of the flat plate 32 (d) is set to be equal to or less than the thickness of the holding member 28 and the FPC 31 over the upper portion thereof. By doing so, even if the cable harness 32 gets over the holding member 28, the space between the holding member 28 and the rear case 30 can be reduced, so that the display device can be thinned.

  As described above, in this configuration, both the FPC 31 and the cable harness 32 are extended from the left side of the display device 3. For this reason, it becomes possible to share the space required for the bent part and the folded part, respectively, and further, by changing the cross-sectional shape of the cable harness 32, the display device 3 is effectively arranged to be reduced in size.

  Next, the characteristics of the shape near the hole 45 of the hinge portion 2 of the display device 3 in the present embodiment will be described with reference to FIG. 6A is a view of the display device 3 as viewed from the front, FIG. 6B is a central cross-sectional view of the rotating shaft of FIG. 6A, and FIG. 6C is an enlarged view showing the features of this embodiment. FIG. The posture of the display device 3 shown in FIG. 6 is the same as the posture described in FIG.

  As described above, in this embodiment, the FPC 31 and the cable harness 32 are both extended from the hinge portion 2 side. For this reason, the bent portion of the cable harness 32 and the folded portion of the FPC 31 are in a laminated state in the immediate vicinity of the extending portion extending from the hole 45 of the hinge portion 2 to the second electronic circuit board 29. There is a concern that the covering portion of the cable harness 32 may be damaged when the cable harness 32 is pressed against the hole 45 of the hinge portion 2 due to the repulsive force of the FPC 31 generated at the folded portion of the FPC 31 due to the laminated state.

  In order to avoid this problem, in this embodiment, the relief portion 50 is provided in the region corresponding to the bent portion of the cable harness 32 with respect to the FPC 31. A relief shape 51 is also provided for the corresponding portion of the display unit 9. Further, with respect to the outer shape in the vicinity of the folded portion of the FPC 31, a part of the FPC 31 is enlarged in order to compensate for the area of the electric circuit pattern reduced by the relief shape 50.

  As described above, according to the configuration of the present embodiment, since the stacked state of the FPC 31 and the cable harness 32 is avoided in the folded portion of the FPC 31, the concern that the covering portion of the cable harness 32 is damaged can be avoided. Further, as shown in FIG. 6C, a sufficient space / gap X through which the cable harness 32 passes can be ensured, so that the display device 3 can be further downsized accordingly. Furthermore, since the escape portion 50 is formed inside the display device 3 covered with the front case 26 and the rear case 30, the appearance is not affected.

  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. Further, the present invention may be applied to a digital movie camera, a portable PC, a cellular phone, and the like. Further, as the display unit in the present embodiment, a so-called transmissive liquid crystal display device with a built-in backlight (second heating element) or a so-called reflective plate instead of the backlight (second heating element). Either a reflective liquid crystal display device may be used.

DESCRIPTION OF SYMBOLS 1 ... Imaging device 2 ... Hinge part 3 ... Display device 9 ... Display part 24 ... First heating element 25 ... First electronic circuit board 29 ... Second electronic circuit board 31 ... FPC (Flexible printed circuit board)
32..Cable harness 34..Second heating element 50..Notch

Claims (3)

A flat display device, a hinge portion that enables opening / closing operation and rotation operation of the display device, a first electronic circuit board provided in the imaging device, and a second electronic circuit board provided in the display device A first heating element disposed on the first electronic circuit board, a second heating element disposed on the second electronic circuit board, the first electronic circuit board, and the second electronic circuit board A cable harness for connecting the electronic circuit board; a flexible printed circuit board (FPC) for connecting the display unit of the display device and the second electronic circuit board; and the first heating element and the second In the imaging device arranged so that the heating element is not substantially laminated,
The cable harness is located at a substantially central portion of the hinge portion;
The cable harness and the FPC are extended in a substantially laminated state from the same end surface of the display device,
An imaging device, wherein a cutout portion serving as a relief portion of the cable harness is provided in a part of the FPC.   The imaging apparatus according to claim 1, wherein the FPC is configured to be folded back approximately 180 ° after being extended from the display unit.   The imaging device according to claim 1, wherein the cable harness has a cross-sectional shape that changes from a circular shape to a flat plate shape in the display device.