JP2007310252A - Apparatus for adjusting tilt of display screen in flat panel display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tilt adjusting means that can speedily and easily adjusts tilt by using a display screen center as a rotary axis, in an installation site of a flat panel display device such as a thin television or a thin display, which has a large-sized oblong display screen of a wide aspect ratio. <P>SOLUTION: A protrusion abutted with a bracket, which constitutes a skeleton inside a liquid crystal television, is formed on one side of an upper side in a stand attaching plate that is integrally locked with a stand attaching part of the flat panel display device. A tilt adjusting screw, which can adjust spacing between the stand attaching plate and the center-bearing bracket, is disposed on the other side of the stand attaching plate. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a structure of a display screen tilt adjustment device having a display screen center as a rotation axis, particularly in a thin display device such as a thin television having a wide screen with a wide aspect ratio and a thin display device.

In recent years, an increase in the size of a display screen of a thin television or a thin display device using a liquid crystal display panel, a PDP, or the like as a display element has been rapidly progressing. Many of these thin display devices have an aspect ratio of 16 on the display screen. : In order to promote the use of 9 landscape screens and the technological advancement of thin display devices, the design of the exterior design has been summarized in a simple and sophisticated form mainly composed of straight lines and rectangles. Since it is becoming mainstream, furniture, wall-to-ceiling joint lines, and pillars at the installation location of the thin display device due to the processing accuracy and assembly accuracy of many parts constituting the thin television and the thin display device Or, deviations in parallelism and perpendicularity to horizontal and vertical lines of joinery, etc. can be easily detected, and the quality of the flat-screen TV and thin-screen display device is marked. Ku harm.

The cathode ray tube type display device is affected by geomagnetism, and the display screen center is rotated or tilted slightly depending on the direction of the cathode ray tube, and the display screen is slightly rotated or tilted. A correction current for correcting the display screen inclination is supplied to the arranged correction coil, and corresponding means is applied. However, the same means cannot be applied to a thin display device using a liquid crystal display panel or a PDP as a display element, and the present invention has been made in view of such a situation, such as a liquid crystal television and a thin display device. Even at the installation site of the thin display device, the inclination of the thin display device with the center of the display screen as the rotation axis is easily adjusted without using a special tool.
JP 2000-41154 A JP 2001-352557 A

In thin display devices such as thin televisions and thin display devices that have a simple and sophisticated form that is composed mainly of straight lines and rectangles, using a landscape screen with an aspect ratio of 16: 9. Degree of parallelism and orthogonality with furniture in installation location, joint line between wall surface and ceiling surface, horizontal or vertical line such as pillar or joinery, due to processing accuracy and assembly accuracy of many parts constituting the thin display device The tilt of the display screen can be quickly and easily adjusted at the installation site of the thin display device. Provide a means.

A tilt adjustment device capable of quickly and easily tilting a thin display device in a horizontal direction at a site where a thin display device such as a thin television or a thin display device using a liquid crystal display panel or a PDP as a display element is installed. The thin display device is provided.

In a thin display device using a liquid crystal display panel, a PDP, or the like as a display element, a protrusion that abuts on a driving body inside the thin display device at one end of a cut surface on the upper side of a stand mounting plate that is integrally locked with the stand of the thin display device The stand mounting plate is disposed so that the display screen inclination adjusting screw comes into contact with the other end of the cut surface on the upper side of the stand mounting plate.

In a thin display device such as a thin television or thin display device using a liquid crystal display panel or PDP as a display element, the thin display device is provided in a plane parallel to the display screen of the thin display device including the center of gravity of the thin display device. The power point and fulcrum of the horizontal tilt adjusting device are arranged.

In a thin TV or a thin display device having an appearance design that is a simple and refined form mainly composed of straight lines and rectangles, using a horizontally long screen with a display screen aspect ratio of 16: 9. Due to the processing accuracy and assembly accuracy of a large number of parts constituting the thin display device, the degree of parallelism or orthogonality between furniture in the installation location, the connecting line between the wall and the ceiling, the horizontal line or the vertical line such as a column or joinery, etc. Deviation is easily detected and the quality of the thin television or the thin display device may be significantly impaired, and the tilt adjustment can be easily and quickly performed at the installation site of the thin display device.

FIG. 1 is a rear view of a liquid crystal television 1 for explaining an embodiment of the present invention. In FIG. (Tilt in the horizontal direction) is exaggerated. 1 is a rear cabinet of the liquid crystal television 1 and is formed by molding a thermoplastic resin member. 5 is a detachable stand to be attached to the liquid crystal television 1 so that the liquid crystal television 1 can be used as a table type, 2 is a screw for screwing the stand 5 to the main body of the liquid crystal television 1, and 12b does not use a tool. This is an adjustment wheel for easily adjusting the tilt of the display screen.

FIG. 2 is an exploded perspective view of the rear cabinet 1a of the liquid crystal television 1, the stand mounting plate 13 and the mounting portion of the stand 5 showing the embodiment of the present invention. A recessed portion that is stepped down from the rear surface of the rear cabinet 1a is formed at the lower center of the rear cabinet 1a. The screw insertion hole 5a in which the screw 2 is drilled in the stand 5; The stand 5, the stand mounting plate 13, and the rear cabinet 1 a are screwed to the center bracket 11 (not shown) constituting the drive unit inside the liquid crystal television 1.

FIG. 3A is a rear view of the liquid crystal television 1 showing a state in which the stand mounting plate and the stand 5 are attached to the rear cabinet 1 a by the screw 2. Between the rear surface of the rear cabinet 1a of the liquid crystal television 1 and the mounting surface of the stand 5, a stand mounting plate 13 having a pivot 13a having a sharp edge at the end is interposed, and the sharp edge of the pivot 13 is located in the rear cabinet 1a. The pivot opening is inserted into the center bracket 11 (not shown) inside the rear cabinet 1a, and the contact portion forms a fulcrum for adjusting the tilt of the display screen.

FIG.3 (b) is the longitudinal cross-sectional view cut | disconnected along the cutting line AA shown with a dashed line in FIG. A center bracket 11 is disposed inside the rear cabinet 1a. The center bracket 11 supports a backlight device that irradiates the back surface of the liquid crystal display panel and a large structure inside the liquid crystal television 1 having a large mass such as the liquid crystal display panel. Therefore, it is a rigid member made of a metal member having a sufficient thickness. The center bracket 11 is formed with an inclination adjusting screw mounting hole 11c for screwing the screw shaft portion 12c of the inclination adjusting screw 12. Further, in order to screw the stand 5 from the outside of the rear cabinet 1a to the center bracket 11, a stud 11d having a screw groove on the inner wall of the air core portion is caulked.

4A is a rear perspective view of the inside of the liquid crystal television including the center bracket 11, and FIG. 4B is an enlarged perspective view of the center bracket 11 to which the inclination adjusting screw 12 is attached. As shown in FIG. 4A, the center bracket 11 is a precursor for mounting a large structure inside a liquid crystal television having a large mass, such as the liquid crystal display panel 4 or the backlight device 3 that irradiates the back surface of the liquid crystal display panel 4. Therefore, it is firmly formed of a metal member having a sufficient thickness.

The center bracket 11 is formed with an inclination adjustment screw mounting hole 11c for screwing the screw shaft portion 12c of the inclination adjustment screw 12, and an adjustment wheel opening 11b for escaping the adjustment wheel 12b portion of the inclination adjustment screw 12 is formed. It is touched. Further, in order to screw the stand from the outside of the rear cabinet, a stud 11d having a screw groove formed on the inner wall of the air core is fastened to the center bracket 11.

FIG. 5 is a perspective view showing a lower central portion of the rear cabinet 1a of the liquid crystal television. As shown in FIG. 5A, the lower central portion of the rear cabinet 1a is stepped down from the other surface of the rear cabinet 1a to form a recess. Further, a part of the tip of the stud 11d crimped to the center bracket 11 disposed inside the liquid crystal television is exposed from a screw insertion hole 1d formed in the rear cabinet 1a. Further, on the upper surface of the concave portion of the lower central portion of the rear cabinet 1a, a pivot for pivoting the tip of the pivot provided at the upper edge of the stand mounting plate to the center bracket 11 provided inside the liquid crystal television. A wheel opening 1c is provided for clearance of the opening 1b and the adjusting wheel 12b of the inclination adjusting screw 12 and the screw shaft portion 12c. The screw insertion hole 1d formed in the rear cabinet 1a is not a perfect circle, and the stud 11d crimped to the center bracket 11 inside the liquid crystal television can be moved along the screw insertion hole 1d of the rear cabinet 1a when adjusting the tilt. Therefore, an elliptical screw insertion hole 1d is formed on an arc centering on the pivot tip of the stand mounting plate fitted in the pivot opening 1b of the rear cabinet 1a.

As shown in FIG. 5B, a stand mounting plate 13 is placed on a stud that is exposed at a part of the tip from a screw insertion hole provided in a recess in the lower center of the rear cabinet 1a. Screw the stand. In order to allow the studs crimped to the center bracket 11 inside the liquid crystal television to move along the screw insertion holes 13b at the time of tilt adjustment, a plurality of screw insertion holes 13b of the stand mounting plate 13 as shown in FIG. Is not a perfect circle, but an elliptical screw insertion hole 13b is formed on an arc centered on the tip of the pivot 13a formed on the stand mounting plate 13. In order to integrate the stand mounting plate 13 with the stand, a bent portion of the stand pressing portion 13c is formed on the upper side of the stand mounting plate 13.

As a procedure for assembling the tilt adjusting device of the display screen of the thin display device, the screw shaft portion 12c of the tilt adjusting screw 12 is screwed into the tilt adjusting screw mounting hole 11c of the center bracket 11 shown in FIG. Next, as shown in FIG. 5A, alignment is performed so that the stud 11d of the center bracket 11 is exposed from the screw insertion hole 1d of the rear cabinet 1a, and the center bracket 11 is covered by the rear cabinet 1a. Further, as shown in FIG. 5 (b), the screw insertion hole 13b of the stand mounting plate 13 is aligned with the screw hole at the axial center of the stud 11d, and the stand mounting plate 13 is mounted on the stepped surface of the rear cabinet 1a. Put. Next, as shown in FIG. 2, alignment with the screw insertion holes 5a of the stand 5 is performed, and the screws 2 are sequentially inserted into the screw insertion holes 5a, 13b and 1d, and are arranged inside the rear cabinet 1a at once. Temporarily tighten the center bracket (not shown).

When the adjusting wheel 12b of the tilt adjusting screw shown in FIG. 3B is rotated with the screw 2 temporarily tightened, the screw shaft portion 12c of the tilt adjusting screw is screwed into the tilt adjusting screw mounting hole 11c of the center bracket 11. The length changes, and the stand mounting bracket pressing portion 12a of the tilt adjusting screw 12 presses the upper piece of the stand mounting plate 13 according to the screwing length. Since the stand mounting plate 13 is integrated with the stand 5, as a reaction, the center bracket 11 moves upward or downward, the inclination of the liquid crystal display panel fixed to the center bracket 11 changes, and the display screen is changed. Tilt is adjusted. After the tilt adjustment, the temporarily tightened screw 2 is tightened to complete the adjustment.

Here, the stand mounting bracket pressing portion 12a of the tilt adjusting screw 12 shown in FIG. 5 (b) becomes a power point of the tilt adjusting device, and the other end of the upper piece of the stand mounting plate 13 with which the stand mounting bracket pressing portion 12a abuts. The pivot 13a located is the fulcrum or the rotation center of the tilt adjusting device. The straight line connecting the force point and the fulcrum of the tilt adjusting device is disposed in a plane parallel to the display screen including the center of gravity “g” of the liquid crystal television shown in FIG. There is no twisting stress on the display screen during adjustment, and smooth display screen tilt adjustment work is possible.

In the rear view of the liquid crystal television according to the present invention, the clockwise tilt around the center of the display screen is exaggerated. It is the disassembled perspective view which removed the back cabinet of the back surface of the liquid crystal television shown in FIG. 1, a stand, and a stand attachment plate. 3A is a stand attachment portion of the rear cabinet of the liquid crystal television, and FIG. 3B is a longitudinal sectional view cut along a cutting line indicated by a chain line AA in FIG. FIG. 4A is a rear perspective view of the inside of the liquid crystal television including the center bracket portion, and FIG. 4B is an enlarged perspective view of the center bracket to which a tilt adjusting screw is attached. FIG. 5A is a perspective view showing a stand attaching portion at the lower center of the rear cabinet, and FIG. 5B is a perspective view showing a state where the stand attaching bracket is placed on the rear cabinet.

Explanation of symbols

1: LCD TV 1a: Rear cabinet 1b: Pivot opening 1c: Wheel opening 1d: Screw insertion hole 1e: Front cabinet 2: Screw 3: Backlight device 4: Liquid crystal display panel 5: Stand 5a: Screw insertion hole 11: Center bracket 11b: Adjustment wheel opening 11c: Tilt adjusting screw mounting hole 11d: Stud 12: Tilt adjusting screw 12a: Stand mounting bracket pressing portion 12b: Adjustment wheel 12c: Screw shaft portion 13: Stand mounting plate 13a: Pivot 13b: Screw Insertion hole 13c: Stand pressing part 14: Center of gravity

Claims (3)

A thin display device using a liquid crystal display panel, a PDP, or the like as a display element, comprising a horizontal tilt adjustment device for the thin display device. In a thin display device using a liquid crystal display panel, a PDP, or the like as a display element, a protrusion that abuts against a driving body inside the thin display device at one end of a cut surface on the upper side of a stand mounting plate that is integrally locked with the stand of the thin display device A thin-type display device, characterized in that a shaft portion of an inclination adjusting screw is in contact with the other end of the cut surface on the upper side of the stand mounting plate. 3. The thin display device according to claim 1 or 2, wherein a power point and a fulcrum of the horizontal tilt adjustment device of the thin display device are provided in a plane parallel to the display screen of the thin display device including the center of gravity of the thin display device. A thin display device characterized by comprising:

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