JP2006251241A - Attachment structure of display element and digital camera having the display element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem , although a liquid crystal panel 30 is housed in a liquid crystal case 41 and an LCD frame 50 and is protected by providing a protective cover 37 on its front surface, and also various contrives are made so that neither impulse nor pressure are imposed on the liquid crystal panel by providing a gap so that the inner surface of a body case 10 is not made in direct contact with the liquid crystal panel or the like, a demand for making equipment, in which the liquid crystal panel is housed, small in size and light in weight is strong and it is difficult to form sufficient buffering gap at surroundings of the panel, and therefor, it has being desired to make the impulse not to be transferred to the panel while making the gap at the surroundings of the panel smaller. <P>SOLUTION: In the attachment structure of the liquid crystal panel by which the liquid crystal panel is housed in the LCD frame 50 and is fixed to the body case, the frame 50 is constituted so that an LCD frame whose frame wall 53 is slightly heightened than the thickness of the liquid crystal panel. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure for mounting a display element such as a liquid crystal display incorporated in a digital camera, a mobile phone, a portable small television, and the like, and a digital camera incorporating such a display element.

  2. Description of the Related Art Today, liquid crystal display plates are frequently used as display screens for monitor screens of digital cameras, mobile phones or portable pocket TVs.

  This liquid crystal display panel is a combination of a liquid crystal panel and a backlight as a light source provided on the back surface of the liquid crystal panel, and is attached to a circuit board, and a transparent protective cover such as acrylic resin is positioned on the front surface of the liquid crystal display panel. The liquid crystal panel is fixed immediately inside the opening of the case.

  When the liquid crystal panel is fixed to the circuit board, an LCD holder that supports the liquid crystal panel is used, the backlight is stored in the LCD holder, the liquid crystal panel is fixed on the LCD holder, and the LCD holder is attached to the circuit board. There is something to fix.

  When the liquid crystal panel is fixed to the circuit board through the LCD holder, when the liquid crystal panel and the circuit board are electrically connected, the connection between the liquid crystal panel and the circuit board is poor due to thermal expansion of the LCD holder. It has been proposed to apply a device that does not occur (for example, Patent Document 1).

  Also, when covering the LCD panel display with a protective cover, the external force applied to the protective cover is transmitted to the surface of the LCD panel, which may cause malfunction or damage of the LCD panel. In order to prevent this from occurring, it has been proposed to secure a space between the surface of the liquid crystal panel and the protective cover by making the housing formed of the protective cover and the case into a round shape (for example, Patent Document 2).

  Furthermore, today, a liquid crystal panel and a backlight are combined, and a backlight is placed under the liquid crystal panel to form a display element in which the liquid crystal panel and the backlight are stored in a liquid crystal case, which is attached to a body case such as a liquid crystal panel. It has also been made easier to assemble electronic devices.

  When a display element in which a liquid crystal panel and a backlight are accommodated in this liquid crystal case is housed in a digital camera, the LCD frame 50 is disposed on the back of the circuit board 27 as shown in FIG. The frame 50 is fixed to the body case 10, and the display element in which the liquid crystal panel 30 and the backlight 35 are superimposed in the liquid crystal case 41 is fixed so as to be accommodated in the LCD frame 50.

  The circuit board 27 is for fixing an image pickup device 25 such as a CCD disposed behind the optical lens 21. The circuit board 27 is screwed to an appropriate part such as the periphery of the circuit board 27 at a required part of the body case 10. As a result, the circuit board 27 is fixed to the body case 10.

  In this display element, as shown in FIG. 5, the liquid crystal panel 30 and the backlight 35 are overlapped and stored in the liquid crystal case 41, and the liquid crystal panel 30 excluding the liquid crystal display section 32 is surrounded by a front plate. The front case 43 covered with 44 is fixed to the liquid crystal case 41, and the liquid crystal panel 30 and the backlight 35 are housed and fixed so as to overlap each other in a predetermined positional relationship.

  When the display element is housed and fixed in the LCD frame 50, the display element is fixed to the LCD frame 50 with a width and depth matching the outer shape of the liquid crystal case 41 with the frame wall 53 of the LCD frame 50. In some cases, a protective cover 37 is fixed to the display element by using an adhesive 47 such as a double-sided adhesive tape on the surface of the face plate 44.

  It should be noted that a thin plate-like cushioning material 48 is adhered to the front surface of the cover collar portion 39 at the periphery of the protective cover 37, and the liquid crystal is displayed when the inside of the display unit frame 15 of the body case 10 is deformed inward by an impact or the like. The panel 30 is prevented from being damaged.

Further, as shown in FIG. 6, the front surface of the cover collar 39 is adhered to the display frame 15 formed on the back surface 12 of the body case 10 by an adhesive 47 such as a double-sided adhesive tape, whereby the protective cover 37 is attached to the body case. The display element is fixed to the LCD frame 50 so that a slight gap is formed between the protective cover 37 and the display element, and the liquid crystal is applied even if an external force is applied to the body case 10 or the protective cover 37. Some prevent the panel 30 from being damaged.
Japanese Patent Laid-Open No. 08-076098 JP 09-016098 A

  As described above, the liquid crystal panel is housed in a liquid crystal case or an LCD frame, and a protective cover is provided on the front surface of the liquid crystal panel to protect the liquid crystal panel, and the inner surface of the display frame formed in the body case is the liquid crystal panel. Various measures have been taken to prevent impact and pressure from being applied to the liquid crystal panel, for example, by providing a gap so that it does not come into direct contact with the liquid crystal panel.

  In addition, when the periphery of the protective cover is fixed to the display element or the display frame of the body case by an adhesive, the protective cover expands and deforms due to temperature and humidity, and presses the liquid crystal panel, causing malfunction. There is also a gap between the protective cover and the liquid crystal panel.

  However, a device using a display element such as a liquid crystal display panel has a strong demand for reduction in size and weight today, and it is difficult to form a sufficient buffer space between the display element and surrounding members.

  Therefore, the present invention provides a display element mounting structure that can downsize a device having a monitor screen such as a liquid crystal panel without damaging the liquid crystal panel or the like due to an external force such as an impact.

  The present invention relates to a display element mounting mechanism in which a display element such as a liquid crystal display panel is accommodated in an LCD frame (50) and fixed to a body case (10), and the frame wall (53) of the LCD frame (50) is attached to the display element. The LCD frame (50) is slightly higher than the height (thickness).

  Then, the front end of the frame wall (53) of the frame (50) containing the display element is brought close to the body case (10) so as to contact the inside of the body case (10).

  Further, the frame wall (53) may be provided with a frame protrusion (55) protruding from the upper end thereof to make the height of the frame wall (53) higher than the height (thickness) of the display element. When the height to the tip of (55) is made higher than the height (thickness) of the display element, the thickness of the display element and the cover collar (39) of the protective cover (37) placed on the display element It is preferable to make it slightly higher than the sum of the thickness.

  Further, the protective cover (37) placed on the display element is placed on the display element with the cushion plate (49) interposed therebetween, and a cover collar (39) formed on the periphery of the protective cover (37). It is preferable that the upper surface of the protective cover (37) is sandwiched between the front case (43) and the body case (10) of the display element by bringing the upper surface of) into contact with the inside of the body case (10).

  In the present invention, the display element is housed and fixed in the LCD frame (50) fixed to the body case (10) of the camera, and the frame wall (53) of the LCD frame (50) is the height of the display element. This is a digital camera that is slightly higher than (thickness) and has the end of the frame wall (53) positioned in the immediate vicinity of the body case (10), and is protected by a cushion plate (49) on the front surface of the display element. The cover (37) is placed, and the cover collar (39) at the periphery of the protective cover is aligned with the cushion plate (49) and sandwiched between the front case front plate (44) of the display element and the inside of the body case (10) It is a digital camera.

  As described above, when the frame wall of the frame for housing the display element is made higher than the thickness of the display element, when an impact is applied to the body case which is a case of an electronic device incorporating the display element, the liquid crystal display unit of the display element It is possible to prevent an impact from being transmitted directly from the body case around the opening to allow the device to be visually recognized from the outside to the display element.

  In addition, if the cover cover's cover collar is sandwiched between the front plate of the display element and the back of the display unit frame together with the cushion plate, the protective cover absorbs the expansion deformation and damages the display element. Can be prevented.

  The display element is housed and fixed in the LCD frame, the front end of the frame wall of the LCD frame is positioned in the immediate vicinity of the inside of the body case, and the cover collar on the periphery of the protective cover is aligned with the cushion plate and the front plate of the front case. A digital camera sandwiched between the inside of the body case can prevent the display element from being damaged by an impact applied to the body case.

  The mounting structure of a display element such as a liquid crystal display panel according to the present invention incorporates a display element in a digital camera, and the display element such as a liquid crystal display board is attached to an LCD frame 50 to a circuit board 27 fixed to the body case 10. The display element is fixed to the body case 10 so as to accommodate the.

  The liquid crystal panel 30 and the backlight 35 are overlapped with each other, and the liquid crystal panel 30 and the backlight 35 are integrally stored in the liquid crystal case 41 by the front case 43 and formed around the LCD frame 50. The height of the tip of the frame projection 55 protruding from the upper end of the frame wall 53 is made higher than the height (thickness) of the display element, and the tip of the frame projection 55 is placed around the liquid crystal display portion opening of the body case 10 It is positioned in the immediate vicinity of the back surface of the display unit frame 15 to be formed.

  The transparent protective cover 37 disposed on the front surface of the display element has a cushion plate 49 placed on the display element or on the cover flange 39, and the cover flange 39 and the cushion plate 49 are placed in front of the display element. The case 43 is sandwiched between the front plate 44 and the back surface of the display unit frame 15 formed in the body case 10.

  In the embodiment of the display element mounting structure according to the present invention, as shown in FIG. 1, the display element is mounted on a digital camera.

  This digital camera is a digital camera in which a lens cap 22 can be attached to and removed from the front surface of the body case 10, and a plurality of optical lenses 21 are attached near the front end of a retractable lens barrel 23. The image pickup device 25 such as a CCD is fixed to the circuit board 27 behind the circuit board 27.

  The circuit board 27 is fixed to the body case 10 by screwing appropriate portions such as the periphery thereof to the required part of the body case 10, and the image sensor 25, the liquid crystal display panel, and other necessary integrated circuits are fixed. It is what is done.

  The display element is a liquid crystal case 41 in which the liquid crystal panel 30 and the backlight 35 are stacked and stored. The liquid crystal panel 30 stored in the liquid crystal case 41 is inserted into the opening of the body case 10. The liquid crystal case 41 is housed and fixed to the LCD frame 50 so as to be positioned inside the transparent protective cover 37.

  The LCD frame 50 is placed at a required position on the back surface of the circuit board 27 and is fixed to the body case 10. In the digital camera shown in FIG. Since it is formed on a part of the back surface 12, the display unit frame 15 is formed around the protective cover 37.

  This display frame 15 is a body that slightly protrudes around the opening for inserting the protective cover 37 from the case back surface 12, and has a body with increased rigidity around the case back surface 12 and the opening for inserting the protective cover 37. Case 10 is assumed.

  The LCD frame 50 is formed with a frame wall 53 around a flat frame plate 51 that matches the size of the liquid crystal case 41. As shown in FIG. A through-hole 57 is provided, and a frame wall 53 is erected in a vertical direction around the frame plate 51 so as to form a gap for drawing out a connector cord from the backlight 35 and the liquid crystal panel 30. Screw holes 58 and locking projections 59 are provided at required locations on the plate 51.

  Further, in this embodiment, a frame protrusion 55 protruding further upward from the upper edge of the frame wall 53 is provided, and the height from the tip of the frame protrusion 55 to the upper surface of the frame plate 51 is determined by the thickness of the display element ( It is slightly higher than (height).

  In this LCD frame 50, the locking projection 59 is engaged with a predetermined position of the body case 10, and the LCD frame 50 is fixed to the body case 10 by screws passing through the screw holes 58. The LCD frame 50 is fixed to the circuit board. The display element is accommodated at a predetermined position on the back surface of 27, as shown in FIG.

  In this display element, the liquid crystal panel 30 is stacked above the backlight 35 and stored in the liquid crystal case 41, and the front panel 44 holds the periphery of the liquid crystal panel 30 that is the periphery of the liquid crystal display section 32 in the liquid crystal panel 30. When the display element is housed in the LCD frame 50, the frame projection 55 of the LCD frame 50 protrudes higher than the display element and the tip can be positioned in the immediate vicinity of the display unit frame 15. .

  Therefore, even if an impact is applied to the body case 10 and the display unit frame 15 is deformed inward, it is possible to prevent the impact from being transmitted to the frame wall 53 and the impact to the liquid crystal panel 30.

  Further, in this embodiment, when the protective cover 37 is attached to the opening of the body case 10 surrounded by the display unit frame 15, the upper and lower surfaces of the cover collar part 39 are connected to the rear surface of the display unit frame 15 and the front case 43. Without fixing to the face plate 44, a frame-like cushion plate 49 is inserted between the front plate 44 and the protective cover 37 is placed on the front surface of the liquid crystal panel 30, and the upper surface of the cover collar 39 is placed on the display frame 15 The periphery of the protective cover 37 is sandwiched between the display unit frame 15 and the front plate 44 of the front case 43 with the cushion plate 49 interposed therebetween.

  As shown in FIG. 2, the frame protrusions 55 are provided on each of four frame walls 53, which are the upper and lower frame walls 53 of the frame plate 51 and the right and left frame walls 53 of the frame plate 51. The number of frame protrusions 55 and the width of each frame protrusion 55 are changed depending on the aspect ratio of the liquid crystal panel 30 as well as the case where a total of nine frame protrusions 55 are provided.

  Further, the height of the frame wall 53 itself is made higher than the thickness of the display element without providing the frame protrusion 55, and is substantially equal to or slightly more than the total thickness of the cover collar 39 in the display element and the protective cover 37. May be high.

  As described above, the height of the frame wall 53 including the frame protrusion 55 or the height of the frame wall 53 itself substantially coincides with the sum of the thickness (height) of the display element and the thickness (height) of the cover collar 39. If the thickness of the display element and the thickness of the cover collar 39 are slightly higher, the cushion plate 49 is inserted and the protective cover 37 is placed on the display element, and the LCD frame 50 is covered with the protective cover. If the periphery of the protective cover 37 is pressed by the display unit frame 15 of the body case 10 so as to accommodate the display element on which the 37 is placed, the frame wall 53 or the frame projection 55 is brought into contact with the back surface of the display unit frame 15 or the display unit It can be positioned in the immediate vicinity of the back surface of the frame 15.

  The thickness of the cushion plate 49 creates a gap between the protective cover 37 and the liquid crystal panel 30 to prevent the shock from being transmitted to the liquid crystal display portion 32 of the liquid crystal panel 30 even if an impact is applied to the protective cover 37. can do.

  Further, when the protective cover 37 expands due to a change in temperature or humidity, if a gap is formed between the peripheral edge of the protective cover 37 and the inner edge of the display unit frame 15, the cover collar 39 can be connected to the display unit frame 15 or The expansion of the protective cover 37 is absorbed by being displaced from the front case 43, and the protective cover 37 can be prevented from warping inward. The back surface of the protective cover 37 contacts the liquid crystal panel 30 and damages the liquid crystal panel 30. Can also be prevented.

When a transparent soft resin plate is used for the cushion plate 49, the protective cover 37 may be placed on the cushion plate 49 that covers the entire upper surface of the display element.
In addition, the cushion plate 49 is not limited to being inserted between the protective cover 37 and the display element, and the frame-shaped cushion plate 49 is placed on the cover flange portion 39 to cover the cover flange portion 39 and the cushion plate. 49 may be sandwiched between the front plate 44 of the display element and the display frame 15 which is the periphery of the opening of the body case 10.

In the above embodiment, the display element is attached to the digital camera, but a mobile phone, a video camera, a portable pocket TV, and the like can be attached in the same manner.
The display element is not limited to a display element using a liquid crystal panel such as a liquid crystal display panel.

Sectional drawing which shows an example of the digital camera using the attachment structure of the display element which concerns on this invention. The perspective view which shows the general appearance of the LCD frame used for the attachment structure of the display element which concerns on this invention. Sectional drawing which shows the principal part of the attachment structure of the display element which concerns on this invention. Sectional drawing which shows an example of the digital camera which incorporates the conventional display element. Sectional drawing which shows an example of the attachment structure of the conventional display element. Sectional drawing which shows the other example of the attachment structure of the conventional display element.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Body case 12 Case back 15 Display part frame 21 Optical lens 22 Lens cap 23 Lens barrel 25 Image sensor 27 Circuit board 30 Liquid crystal panel 32 Liquid crystal display part 35 Backlight 37 Protective cover 39 Cover collar part 41 Liquid crystal case 43 Front case 44 Front plate 47 Adhesive material 48 Buffer material 49 Cushion plate 50 LCD frame 51 Frame plate 53 Frame wall 55 Frame projection 57 Through hole 58 Screw hole 59 Locking projection

Claims (6)

  A display element mounting mechanism for storing a display element in a frame and fixing the display element to a body case, wherein the frame wall of the frame is slightly higher than a height (thickness) of the display element, and the frame wall The display element mounting structure is characterized in that the front end of the display element is close to the inside of a body case that is an exterior case of an electronic device in which the display element is incorporated.   The frame wall includes a frame protrusion protruding from the upper end of the frame wall, and the height of the frame wall from the frame plate to the tip of the frame protrusion is higher than the height (thickness) of the display element. The display element mounting structure according to claim 1.   A display element mounting mechanism in which a protective cover is provided on the front surface of the display element, wherein the height of the frame wall is slightly smaller than the sum of the thickness of the cover collar that is the periphery of the protective cover and the thickness of the display element The display element mounting structure according to claim 1, wherein the display element mounting structure is high.   The protective cover is placed on a front plate of a front case of the display element, and the cover collar portion is overlapped with a cushion plate so that the cover collar portion is an inner case of the electronic device outer case. The display element mounting structure according to claim 3, wherein the display element is sandwiched between the front panel and the front plate.   The display element is housed and fixed in a frame fixed to the body case of the camera, the frame wall of the frame is slightly higher than the height (thickness) of the display element, and the front end of the frame wall is close to the inside of the body case A digital camera characterized by being located.   A protective case is placed on the front surface of the display element via a cushion plate, and the case flange on the periphery of the protective case is sandwiched between the front case front plate of the display element and the inside of the body case together with the cushion plate. The digital camera according to claim 5.

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