JP4637002B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device, and more particularly to an electronic device having a display device for displaying information.

  Conventional electronic devices often use LCD (Liquid Crystal Display) panels as display devices. Since the LCD panel does not emit light by itself, it has a backlight as a light source on the back surface.

  In recent years, in order to reduce the thickness of electronic devices, organic EL (electroluminescence) displays that emit light themselves are being used as display devices (see, for example, Patent Document 1).

On the other hand, CCDs (Charge Coupled Devices) are often used as image pickup elements in conventional electronic devices (see, for example, Patent Documents 2 and 3). In such an electronic apparatus, generally, a sheet metal to which a CCD is fixed is fixed to a lens barrel holding an imaging lens only by screws or by adhesion after adjustment with screws so as to face the optical axis. . In many cases, the display device and the lens barrel are arranged so as to overlap in the thickness direction of the electronic device. In order to reduce the thickness of the electronic device, the CCD and the display device are arranged very close to each other.
JP 2004-152563 A JP-A-8-248465 JP 2005-117253 A

  However, the above conventional techniques have the following problems.

  An organic EL display is suitable for thinning because it does not require a backlight, but it is easily deformed locally. Therefore, if the CCD and the display device are arranged very close to each other in order to reduce the thickness of the electronic device, the organic EL display is deformed and comes into contact with the CCD when the organic EL display is pressed from the display surface side. . As a result, a force is applied to the CCD, the positional relationship between the CCD and the optical axis is shifted, the focus position is shifted, and the imaging performance is degraded.

  The objective of this invention is providing the electronic device which can achieve size reduction, without reducing imaging performance.

  In order to achieve the above-described object, an electronic apparatus according to claim 1 is fixed to a lens barrel holding a lens for forming a subject image, and to the lens barrel so as to face the optical axis direction of the lens. And an imaging device that converts the imaged subject image into an electrical signal, and a display device that is arranged at a predetermined interval from the imaging device and displays information, and the lens barrel includes the display device Is provided with a convex portion that comes into contact with the display device when closer to the imaging element than the predetermined interval.

  According to the electronic apparatus of the first aspect, the convex portion included in the lens barrel comes into contact with the display device when the display device is closer to the imaging element than the predetermined interval. Thereby, even when the display device is pressed and displaced from the display surface, the image sensor is not affected. As a result, it is possible to reduce the size of the imaging apparatus without degrading the imaging performance.

  1 and 2 are exploded perspective views showing the configuration of an electronic apparatus according to an embodiment of the present invention.

  FIG. 1 is a diagram of a camera 100 as an electronic device viewed from the back, and FIG. 2 is a diagram of the camera 100 viewed from the front.

  1 and 2, a camera 100 includes a front cover 1 that covers the front side of the camera, a rear cover 2 that covers the back side of the camera, a lens barrel 3, a viewfinder unit 5, a base 8, a battery case 9, an analog substrate 10, and a digital A substrate 17 is provided.

  The camera 100 also includes an operation flex 19, a speaker 20, an operation button base member 21, an organic EL display 29, a display holder 30, a switching button 32, a fixing plate 33, a button holding member 34, and a side cover 41.

  The base 8 is made of a metal frame. The lens barrel 3 holds a photographing lens for forming a subject image and is fixed to the base 8 by fixing screws 7a, 7b, and 7c. The battery case 9 holds the battery 60 and is fixed to the base 8 with screws 11a and 11b with the analog substrate 10 interposed therebetween.

  A CPU, memory, image processing LSI, and the like are mounted on the digital board 17. A slot 17a for mounting an SD memory card 17b, which is an external memory, and a USB connector 17c for mounting a USB cable (not shown) are mounted on the back surface of the digital board 17. The digital board 17 is screwed to the battery case 9 and the base 8 by screws 18a, 18b, 18c.

  The operation flexible board 19 is equipped with a release SW, a power supply SW, and the like. One end of the operation flex 19 is soldered to the terminal portion of the speaker 20. The operation button base member 21 is made of silicon rubber, and a cross key 22, a center key 23, push buttons 24 and 25, etc. are pasted on the operation button base member 21.

  On the back surface of the operation button base member 21, a dome-shaped metal dish (metal dome) is attached at a position corresponding to the buttons attached to the operation button base member 21. When the above buttons are pressed, the metal dome comes into contact with the pattern on the operation flex 19 and is energized.

  A part 21 a of the operation button base member is configured to cover the edge of the speaker 20, and serves as a cushioning material that closes the gap between the speaker 20 and the rear cover 2. Thereby, it is possible to omit a cushioning member such as urethane foam that has been conventionally attached to the upper portion of the speaker and has played a role in preventing sound leakage or the like.

  A light guide member 27 is attached to the center of the light emitting button 26. The analog substrate 10 includes a tact switch 10a and an LED 10b. The light guide member 27 is configured to press the tact SW 10a mounted on the analog substrate 10 disposed at the back of the operation flex 19 provided with other push buttons SW.

  An LED 10b is disposed beside the tact switch 10a, and light emitted from the LED 10b is guided to the surface of the light emitting button 26 through the light guide member 27. The base portion of the light emitting button 26 is fixed to the base 8 by a screw 28.

  The organic EL display 29 is a display device and is held by a metal display holder 30 having high thermal conductivity. The display holder 30 has a screwing portion 30 a and is fixed to the base 8 by screws 31.

  The switch button 32 switches the operation mode (still image shooting mode, moving image shooting mode, image playback mode) of the camera 100 by moving left and right. The switching button 32 is configured to be movable left and right by sandwiching the rear cover 2 together with the rear fixed plate 33. Further, the switching button 32 is configured to switch the SW when the notch 33 a holds the arm of the mode switching SW mounted on the operation flexible cable 19.

  The button holding member 34 holds a zoom dial 35, a release button 36, and a power button 37. The button holding member 34 is disposed on the upper surface of the battery case 9 with the operation flex 19 interposed therebetween.

  Further, on the side of the button holding member 34, there is provided a connector housing portion for housing the USB connector 17c and the audio / video connector 10c, and a connector cover 38 for covering them is arranged so that it can be pulled out.

  The side cover 41 covers the side surface of the camera 100 and is molded by die casting from the viewpoint of strength and design. Further, the side cover 41 is configured such that holes 41a and 41b are formed at substantially the center, and the strap string 42 is attached to the bar 41c therebetween.

  In the holes 41a and 41b, an inner member 43 whose inside is hollowed out in a hemispheric shape from the back is fitted. Thereby, the strap string 42 can be attached easily. Further, the inner member 43 is arranged such that the wall surface covers the periphery of the holes 41 a and 41 b of the side cover 41. As a result, it is possible to prevent the strap string 42 from being cut at the edge around the hole and to prevent the finger from touching the edge and being injured.

  The side cover 41 is fixed to the base 8 with screws 44a and 44b sandwiching the front cover 1, the rear cover 2, and the inner member 43. The tripod mounting seat 45 is provided with a tripod mounting screw.

  The side surfaces of the front cover 1 and the rear cover 2 are fixed by screws 46a and 46b, and the lower surfaces are fixed by screws 47a and 47b.

  FIG. 3 is a cross-sectional view showing the structure of the organic EL display 29 in FIG.

  In FIG. 3, the organic EL display 29 includes a sealing glass 29a, a base material 29b, an aluminum vapor deposition layer 29c, a ceramic particle mixed black acrylic resin paint layer 29d, and an organic light emitting agent 29e. The display holder 30 includes a screwing portion 30a.

  The organic EL display 29 is held by a metal display holder 30 so as to cover the ceramic particle mixed black acrylic resin coating layer 29d. By releasing the heat generated by the CCD 50 to the camera 100 through the metal display holder 30 having a high thermal conductivity, it is possible to prevent the deterioration of the organic EL display 29 that is sensitive to heat.

  The base material 29 b has a protruding portion 29 b ′ protruding from the display holder 30. The protrusion 29b ′ can radiate heat generated when the organic EL display 29 is driven without affecting the CCD 50.

  The aluminum vapor deposition layer 29c covers the back surface of the display surface of the organic EL display 29 and the side surface of the protruding portion 29b ′.

  The aluminum vapor deposition layer 29c enhances the display brightness of the organic EL display 29 by reflecting external light incident from the display surface of the organic EL display 29 and light emitted from the organic EL display 29 to the display surface side. As a result, the visibility of the organic EL display 29 can be improved.

  Further, the protruding portion 29 b ′ is pressed against the base 8 when the screwing portion 30 a is fixed to the base 8. The protrusion 29 b ′ releases the heat generated by the organic EL display 29 to the camera 100 body through the aluminum vapor deposition layer 29 c having a high thermal conductivity and dissipates it from the surface of the camera 100. As a result, deterioration of the organic light emitting agent 29e due to heat can be prevented.

  The ceramic particle mixed black acrylic resin coating layer 29 d is provided outside the aluminum vapor deposition layer 29 c and covers the back and side surfaces of the organic EL display 29.

  The ceramic particle mixed black acrylic resin coating layer 29d blocks the heat of the CCD 50 (FIG. 4) and the organic EL display 29 and prevents mutual thermal interference. As a result, the ceramic particle mixed black acrylic resin coating layer 29d blocks the heat of the CCD 50 that generates heat when it is driven from being transmitted to the organic EL display 29 even when the CCD 50 is close to the organic EL display 29. As a result, it is possible to reduce the thickness of the camera 100 without deteriorating the heat-sensitive organic EL display 29.

  Further, the CCD 50 is prevented from being heated by heat generated when the organic EL display 29 is driven. As a result, it is possible to prevent noise from being generated in the captured image.

  The ceramic particle mixed black acrylic resin coating layer 29d prevents external light incident from the display surface and light emission of the organic EL display from entering the camera 100 and leaking into the CCD 50.

  Furthermore, the ceramic particle-mixed black acrylic resin coating layer 29d can hide the inside of the imaging device from the display surface side and improve the display quality. The display on the organic EL display 29 can be brightened.

  FIG. 4 is a perspective view showing the structure of the lens barrel 3 in FIG.

  In FIG. 4, the lens barrel 3 includes a rear lens barrel 3a and a plurality of convex portions 3b. A CCD 50, a flexible printed wiring board 51, and a CCD holding plate 52 are arranged on the back surface of the lens barrel 3.

  The CCD 50 is a substantially square imaging device that converts a formed subject image into an electrical signal. The CCD 50 is fixed to the lens barrel 3 so as to face the optical axis direction of the imaging lens. The flexible printed wiring board 51 is pulled out in the direction of one side of the CCD 50, and supplies a signal and a power source for driving the CCD 50 to the CCD 50.

  The convex portion 3b having a height H is provided so as to come into contact with the organic EL display 29 when the organic EL display 29 is pressed from the display surface direction. At least one convex portion 3 b is provided in the vicinity of each side of the CCD 50 in the lens barrel 3. Thereby, the displacement of the CCD 50 due to local deformation of the organic EL display 29 can be prevented.

  The convex portion 3 b is also provided at a position corresponding to the flexible printed wiring board 51 in the lens barrel 3. Rexible printed wiring board 51 has a hole 51a through which this convex portion 3b passes. Thereby, the displacement of the CCD 50 due to the displacement of the organic EL display 29 can be more reliably prevented.

  The CCD 50 is connected to the flexible printed wiring board 51 and bonded to the CCD holding plate 52. The CCD 50 is adjusted so as to face the optical axis by being attached to the rear barrel 3 a with adjustment washers (not shown) sandwiched between three attachment portions provided on the CCD holding plate 52. 3 is fixed. The rear barrel 3a is a part of the barrel 3, and holds a CCD holding plate 52, a low-pass filter, and the like.

  FIG. 5 is a cross-sectional view showing the relationship between the lens barrel 3 and the organic EL display 29 in FIG.

  In FIG. 5, the organic EL display 29 is arranged at a predetermined interval from the CCD 50. When the organic EL display 29 is pressed from the display surface direction, first, the organic EL display 29 always comes into contact with the convex portion 3b. Therefore, the force from the display surface direction is applied to the convex portion 3 b and not applied to the CCD 50. As a result, it is possible to prevent the position of the CCD 50 from shifting when the organic EL display 29 is pressed from the display surface direction.

  The lens barrel 3 also includes an adjustment mechanism (not shown) that adjusts the position of the CCD 50 so as to face the optical axis direction of the photographing lens. The height H of the convex portion 3b is defined so that the organic EL display 29 and the CCD 50 do not come into contact with each other even when the distance between the organic EL display 29 and the CCD 50 is closest when the position of the CCD 50 is adjusted. Thereby, the interval between the CCD holding plate 52 and the organic EL display 29 can be held, and the displacement of the CCD 50 due to the displacement of the organic EL display 29 can be prevented more reliably.

  According to the present embodiment, the convex portion 3 b included in the lens barrel 3 comes into contact with the organic EL display 29 when the organic EL display 29 is closer to the CCD 50 than a predetermined interval. Thereby, even when the organic EL display 29 is pressed and displaced from the display surface, the CCD 50 is not affected. As a result, it is possible to reduce the size of the imaging apparatus without degrading the imaging performance.

It is a disassembled perspective view which shows the structure of the electronic device which concerns on embodiment of this invention. It is a disassembled perspective view which shows the structure of the electronic device which concerns on embodiment of this invention. It is sectional drawing which shows the structure of the organic electroluminescent display in FIG. It is a perspective view which shows the structure of the lens-barrel in FIG. It is sectional drawing which shows the relationship between the lens-barrel in FIG. 1, and an organic electroluminescent display.

Explanation of symbols

3 Lens barrel 3b Convex 29 Organic EL display 50 CCD
51 Flexible Printed Wiring Board 51a Hole 52 CCD Holding Board

Claims (6)

A lens barrel holding a lens for forming a subject image;
An image sensor that is fixed to the lens barrel so as to face the optical axis direction of the lens and converts the imaged subject image into an electrical signal;
A display device that displays information while being arranged at a predetermined interval from the image sensor;
2. The electronic apparatus according to claim 1, wherein the lens barrel includes a convex portion that comes into contact with the display device when the display device is closer to the imaging device than the predetermined interval.   The electronic apparatus according to claim 1, wherein the imaging element is substantially rectangular and includes a printed wiring board that is pulled out in one side direction of the imaging apparatus and transmits an electrical signal.   The electronic device according to claim 2, wherein the convex portion is provided in the vicinity of at least two sides other than the side from which the printed wiring board of the imaging element is pulled out in the lens barrel.   The convex portion is provided in the vicinity of the side from which the printed wiring board is drawn out in the lens barrel, and the printed wiring board has a hole through which the convex portion passes at a position corresponding to the convex portion. The electronic device according to claim 2.   The lens barrel includes an adjustment mechanism that adjusts the position of the imaging element so as to face the optical axis direction of the lens, and the predetermined interval is adjusted by adjusting the position of the imaging element and the display device. The electronic device according to claim 1, wherein the electronic device is larger than the closest distance.   The electronic device according to claim 1, wherein the display device is an organic EL display.

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