JP2015184502A - Electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof camera which maintains an excellent display state even under high water pressure and in which a liquid crystal protective window never comes into contact with a display device.SOLUTION: A waterproof cam includes: a resin casing which has a liquid crystal protective window; a liquid crystal display device which faces the protective window in the resin casing; a metal plate member which has an opening hole at a position opposed to a display part, and is drawn between the resin casing and liquid crystal display device; and an elastic member which is stuck substantially in the center of a side of an outer periphery of the plate member. The elastic member retains the liquid crystal display device at a position on an opposite side opposed to a sticking surface, and moves the liquid crystal display device away form the protective window according to deformation of the metal plate material due to external pressure.

Description

  The present invention relates to measures against water pressure in an electronic device (for example, a waterproof electronic still camera).

  In recent years, there has been a demand for a waterproof electronic still camera that is small and can be used up to deep water. In such a waterproof electronic still camera, a waterproof packing is disposed in the gap of the exterior cover, and a transparent protective window is provided in the lens and the rear liquid crystal display device. In addition, the liquid crystal display device may be fixed to a metal chassis member and held at a position facing the protective window.

  However, when a high water pressure is applied, the chassis member that fixes the liquid crystal display device is pressed due to the deformation of the exterior cover, and the liquid crystal display device may be deformed, and color unevenness may occur in the liquid crystal display device.

  Then, the following technique is proposed as a prior art regarding the deformation | transformation countermeasure by the external force mentioned above (refer patent document 1). In the proposal of Patent Document 1, the liquid crystal display device is surrounded by a box-shaped chassis and held by four receiving surfaces, thereby reducing the distortion of the liquid crystal module.

JP-A-7-99394

  However, when the flat part covering the display surface side is pushed down in the box-shaped chassis, the central part is depressed, and the side wall surrounding the periphery is inclined toward the liquid crystal module, that is, inward. When the inclined side wall contacts the liquid crystal module, the liquid crystal module is distorted and color unevenness occurs.

  Moreover, since the central part of the protective window of the liquid crystal display device is depressed due to water pressure, it is necessary to secure a sufficient gap so as not to contact the liquid crystal module, which increases the thickness of the camera and makes it difficult to see the liquid crystal display part. There was a problem.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a waterproof electronic still camera that can ensure a good liquid crystal display state, and can be downsized and have high water pressure resistance.

In order to solve the above problem, in the first invention of the present application,
Resin exterior with LCD protective window;
In the interior of the resin sheath, a liquid crystal display device at a position facing the protective window;
Having an opening hole at a position facing the liquid crystal display,
A metal plate member extending between the resin sheath and the liquid crystal display device;
A substantially central portion of the outer periphery of the plate member, an elastic member attached to the liquid crystal side;
Is a waterproof camera with
The elastic member holds the liquid crystal display device at a position opposite to the attachment surface, and moves the liquid crystal display device in a direction away from the protective window in accordance with deformation of the metal plate member due to external pressure. It is characterized by.

Furthermore, in the second invention,
The metal plate member has a standing bend so as to surround the liquid crystal display device, and is curved in a direction away from the liquid crystal display device with the approximate center of the surface facing the display surface of the metal plate member as a vertex. Features.

Furthermore, in the third invention,
The exterior member at a position facing the curved metal plate member is characterized in that the apex of the curved portion is the thinnest and the thickness is increased toward the outer periphery.

Furthermore, in the fourth invention,
The standing bending portion is pushed out in a direction away from the liquid crystal display device as the bending portion is pushed by an external pressure and approaches a flat surface.

Furthermore, in the fifth invention,
The external pressure is water pressure.

  According to the present invention, it is possible to provide a waterproof electronic still camera that can ensure a good liquid crystal display state, and can be downsized and have high water pressure resistance.

1A and 1B are external perspective views of a waterproof digital camera as an electronic apparatus according to an embodiment of the present invention, where FIG. 1A is a perspective view viewed from the camera front side, and FIG. It is a disassembled perspective view which shows the internal structure of a waterproof digital camera. It is the disassembled perspective view which shows the main chassis structure of a waterproof digital camera, (a) is a camera back side, FIG.3 (b) is seen from the camera front side. It is a perspective view which shows the structure of the exterior cover of a waterproof digital camera, (a) is a camera back side, FIG.4 (b) is the perspective view seen from the camera front side. It is sectional drawing which shows the structure of the digital camera which follows the arrow AA line of FIG. 1 of a waterproof digital camera. It is sectional drawing which shows the structure of the digital camera which follows the arrow BB line | wire of FIG. 1 of a waterproof digital camera. FIG. 7 is an enlarged view of the waterproof digital camera in FIG. 6, in which a) is a C portion, and FIG. 4B is an enlarged view of a D portion. It is sectional drawing which shows the structure of the digital camera which follows the arrow AA line of FIG. 1 of a waterproof digital camera.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  Hereinafter, a liquid crystal display device and an internal structure according to a first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1A is a front external perspective view of a waterproof digital camera according to the present embodiment. In FIG. 1, a digital camera 101 includes a lens glass 102 and a flash 103 on the front surface of the main body, an AF auxiliary light 104, and a power button 105, a release button 106, and a moving image shooting button 107 on the top surface.

  A lens barrel 108 (FIG. 2) is mounted inside the lens glass 102. The lens barrel 108 constitutes a photographic optical system including a photographic lens, a barrel member that supports the photographic lens, an image sensor, and the like. Yes.

  The power button 105 is operated when the digital camera is turned on / off. The release button 106 is operated for still image shooting, and the moving image shooting button 107 is operated for moving image shooting.

  The flash 103 and the AF auxiliary light 104 perform a light emission operation in a low-luminance shooting environment.

  The power button 105, the release button 106, the moving image shooting button 107, the flash 103, and the AF auxiliary light 104 described above are controlled by a CPU mounted on the main board 201 described later.

  FIG. 1B is a rear external perspective view of the waterproof digital camera according to the present embodiment. In FIG. 1, a digital camera 101 includes a liquid crystal protection window 109 and a zoom button 110 on the back of the main body, an operation button 111, and a projection 112 for hooking fingers.

  FIG. 2 is an exploded perspective view showing the internal structure of the digital camera 101.

  The digital camera 101 includes a lens barrel 108 of a bending optical system, a strobe board (not shown), a main board 201 that is a signal processing board, and a GPS board 202 for acquiring position information, and a battery 203. A resin frame 204 (frame member) is provided.

  Next, the digital camera 101 includes a flexible substrate 205 on which each operation switch is mounted, and a flexible substrate 208 on which a USB connector 206 and an HDMI (registered trademark) connector 207 are mounted.

  In the upper part, a flexible substrate 210 mounted with a DC plug connector 209 for supplying power from the outside is provided.

  The flexible substrates 208 and 210 are held by a resin holder 211.

  Each component is mounted on a resin front cover 212 and is surrounded by a waterproof rib 212a for press-contacting a waterproof packing, which will be described later, to be protected from external water pressure.

  3A and 3B are exploded perspective views showing a holding portion of the liquid crystal display device of the digital camera 101 according to the present embodiment. FIG. 3A is a front perspective view and FIG. 3B is a rear perspective view.

  The main chassis 301 is disposed on the rear side of the camera with respect to the liquid crystal unit 302 and has a box shape so as to surround the liquid crystal unit 302.

  An opening hole 301b having an area larger than that of the display region 302a is formed on a surface 301a of the liquid crystal unit 302 facing the display region 302a.

  The surface 301a has a curved shape having a vertex near the center of the display area 302a.

  Standing walls 301c are formed above and below the curved surface 301a to reinforce the curved surface 301a and protect the liquid crystal unit 302 from external forces.

  A standing wall 301d is formed on the left side of the curved surface 301a, and a tip 301e thereof abuts a sub chassis not shown.

  On the right side of the curved surface 301a, there is a flat surface 301e for holding the flexible substrate 205 on which the operation switch is mounted, and a standing wall 301f that connects the curved surface 301a and the flat surface 301e is formed.

  The liquid crystal unit 302 includes a backlight light guide plate and a backlight LED (not shown), and is held by a bezel 302b having a metal box shape together with a liquid crystal cell.

  The LCD flexible substrate 302c and the backlight flexible substrate 302d extending from the right side surface of the liquid crystal unit 302 are connected to the main substrate 201 through the main chassis opening holes 301h and 301k.

  The liquid crystal unit 302 is mounted via two cushions 303 on the back side of the main chassis curved surface 301a.

  A cushion 303 is a cushion on a strip provided with adhesive paper on both the main chassis facing surface and the liquid crystal unit facing surface, and holds the distance between the main chassis 301 and the liquid crystal unit 302 in a constant state.

  The cushion 303 is mounted in the vicinity of the apex of the curved portion 301a of the main chassis 301, and the thickness of the cushion is set to a height at which the curved surface 301a and the liquid crystal unit do not contact at the end.

4A and 4B are exploded perspective views illustrating the configuration of the rear cover of the digital camera 101 according to the present embodiment. FIG. 4A is a front perspective view and FIG. 4B is a rear perspective view.

  Like the front cover 212, the rear cover 401 is a resin exterior cover, and a waterproof packing 402 is attached to a groove 401a surrounding the rear cover 401.

  The waterproof packing 402 is pressed into contact with the front cover waterproof rib 212a in the groove 401a to prevent water from entering from the outside.

  A surface of the liquid crystal unit facing the display area 302a has an opening hole 401b, and a front surface has a recess 401c surrounding the periphery.

  A liquid crystal protective window 109 made of an acrylic cutting material is bonded and fixed to the recess 401c.

  In the conventional waterproof camera, the liquid crystal protection window 109 may be deformed by water pressure and may contact the display area 302a of the liquid crystal unit.

  Silicon is enclosed in the glass of the liquid crystal cell of the liquid crystal unit 302, but when pressure is applied, the thickness of the silicon layer changes and the original color cannot be displayed.

  For this reason, the photographer has color unevenness in the center of the screen, making it difficult to see, and giving the liquid crystal protection window 109 contact with the liquid crystal unit 302, thereby giving anxiety that it may be broken by water pressure.

  Therefore, the liquid crystal protection window 109 and the liquid crystal unit 302 need to be separated from each other so as not to contact with water pressure. However, increasing the thickness of the window to widen the gap between the two parts or increase the strength of the liquid crystal protection window 109 is a camera. Will be enlarged.

  Therefore, in the present invention, the main chassis 301 is provided between the rear cover 401 and the liquid crystal unit 302 so that deformation due to water pressure is suppressed.

  FIG. 5 is a cross-sectional view showing the configuration of the digital camera along the arrow AA line (FIG. 1) of the digital camera 101 according to the present embodiment.

  This figure shows the internal structure in a normal state, and the liquid crystal protection window 109 and the liquid crystal unit 302 are spaced apart from each other at a constant interval.

  Here, the main chassis 301 is formed along the outer shape of the rear cover 401.

  If the sheet metal is formed into a shape as shown in the figure by press molding, the strength is significantly increased against the pressure from the liquid crystal protection window 109.

  As a result, the exterior cover deformed by water pressure can be supported from the inside by the main chassis 301, and the water-resistant depth performance is improved.

  Further, a curved surface 301 a is formed on the main chassis 301 between the rear cover 401 and the liquid crystal unit 302. The rear cover rear surface 401d facing the curved surface 301a also has a shape curved at a certain distance from the main chassis 301.

  On the other hand, a fixed retreat space α is provided between the lens barrel 108 and the main substrate 201 on the camera inner side of the liquid crystal unit 302.

  This is because the digital camera 101 according to the present embodiment is not only waterproof but also has a high impact resistance, so that the lens barrel 108 and the liquid crystal unit 302 are held by elastic members, and are urged by surrounding gaps. Has improved the impact resistance performance.

  FIG. 6 is a cross-sectional view showing the configuration of the digital camera taken along line BB (FIG. 1) of the digital camera 101 according to the present embodiment.

  This figure shows the internal configuration in an underwater state, in which the liquid crystal protection window 109 and the rear cover 401 are deflected to the inside of the camera by water pressure, and the main chassis bending portion 301a is pushed to change the curvature of the curve closer to a plane.

  When the curvature of the main chassis bending portion 301a is changed, the length of the plate member forming the bending portion is not changed, so that the side walls 301d and 301f at both ends are pushed and moved in the directions of arrows X and −X, respectively.

  Next, when the main chassis bending portion 301a is pushed and displaced to the inside of the camera, the cushion 303 also follows and moves to the inside of the camera.

  Since the liquid crystal unit 302 is held by the cushion 303, the liquid crystal unit 302 moves to the inside of the camera as the cushion 303 moves.

  As a result, the retreat space on the back surface of the liquid crystal unit 302 is reduced. However, there is no problem even if the retreat space is small because there is no strong impact in the water such as when dropped.

  FIG. 7A is an enlarged view of a portion C shown in FIG. In the main chassis configuration curved convexly as in the present embodiment, the side wall 301f is displaced so as to escape in the direction of the arrow -X.

  Accordingly, the liquid crystal unit side wall 302c and the main chassis side wall 301f do not interfere with each other due to water pressure, and color unevenness can be avoided from occurring on the outer peripheral side of the display unit.

  FIG. 7B is an enlarged view of a portion D shown in FIG. In this case as well, the side wall 301d moves in the direction away from the liquid crystal unit side wall 302d (in the direction of the arrow X), so there is no interference, and color unevenness can be avoided from occurring on the outer peripheral side of the display unit.

  FIG. 8 is a cross-sectional view showing the configuration of the digital camera along the arrow AA line (FIG. 1) of the digital camera 101 according to the present embodiment. FIG. 5 shows the internal configuration in the underwater state with respect to FIG. 5, and the liquid crystal protection window 109 has the largest displacement amount due to water pressure at the substantially central portion of the liquid crystal protection window 109 as shown in the figure.

  However, as described above, the liquid crystal unit 302 moves to the inside of the camera as the cushion 303 moves. As a result, the curved liquid crystal protection window 109 and the liquid crystal unit 302 can be prevented from coming into contact with each other, and color unevenness at the center of the screen can also be avoided.

  Moreover, although the case where it deform | transformed by water pressure was mentioned as an example in this Embodiment, it is not limited to this. The same effect can be obtained for an electronic device characterized by a load resistance that can withstand strong pressure in a bag.

  In addition, the liquid crystal protective window is exemplified by the case of using a planar cut acrylic material, but is not limited thereto. You may form by the protective window comprised by glass, the injection-molded transparent resin material, and the curved surface. In this case, the same effect can be obtained.

  In addition, the curved portion of the main chassis is exemplified by a shape in which the entire back surface is curved, but is not limited thereto. The same effect can be obtained even if only a part of the curved portion is used.

  The configuration of the present invention can be applied to various types of imaging devices such as single-lens reflex cameras and video cameras, optical devices other than imaging devices, and electronic devices in addition to digital cameras. Furthermore, the present invention can be applied to elements constituting an imaging device, an optical device, and an electronic device.

101: Camera body 109: Liquid crystal protective window 301: Metal plate member 302: Liquid crystal display device 303: Elastic member 401: Resin exterior

Claims (5)

Resin exterior with LCD protective window;
In the interior of the resin sheath, a liquid crystal display device at a position facing the protective window;
Having an opening hole at a position facing the liquid crystal display,
A metal plate member extending between the resin sheath and the liquid crystal display device;
An elastic member attached to the center of the outer peripheral side of the plate member, the liquid crystal side;
Is a waterproof camera with
The elastic member holds the liquid crystal display device at a position opposite to the attachment surface, and moves the liquid crystal display device in a direction away from the protective window in accordance with deformation of the metal plate member due to external pressure. Waterproof camera featuring   The metal plate member has a standing bend so as to surround the liquid crystal display device, and is curved in a direction away from the liquid crystal display device with a center of a surface facing the display surface of the metal plate member as a vertex. The waterproof camera according to claim 1.   The said exterior member of the position facing the said curved said metal plate member becomes the thinnest thickness at the vertex part of the said curved part, and the thickness becomes thick as it goes to an outer periphery. Item 3. The waterproof camera according to item 2.   4. The waterproof camera according to claim 1, wherein the standing bent portion is pushed away from the liquid crystal display device as the curved portion is pushed by an external pressure and approaches a flat surface. 5.   The waterproof camera according to claim 4, wherein the external pressure is a water pressure.