JP4338411B2 - Image display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a screw member, a frame member, and an image display device that are inserted into a recess formed in a frame member that supports an image display panel.
[0002]
[Prior art]
Conventionally, in assembling an image display device, for example, a liquid crystal display device, an appropriate portion of the outer periphery of a frame member that supports a liquid crystal panel is sandwiched by screw members based on the demand for thinning, and the bezel is interposed via the screw members. A side mount method is employed in which a reinforcing member such as the above is disposed and the reinforcing member is screwed to the screw member from the side (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP 2001-356321 A (page 3, FIG. 2)
[0004]
[Problems to be solved by the invention]
However, due to a demand for further thinning in the image display device, in the image display device described in Patent Document 1, a coupling portion (screw portion) having a sufficient area for screwing must be secured in the screw member or the frame member. There was a problem that could not be.
[0005]
On the other hand, in the image display device, even when the screen size is the same, the position when the reinforcing member such as a bezel is screwed to the outer periphery of the frame member is slightly different depending on the specifications of the user. For this reason, manufacturers of image display devices must prepare bezels and frame members with different screwing positions for each user for image display devices with the same screen size. It was an obstacle.
[0006]
The present invention has been made in view of the above-described problems of the prior art, and can secure a sufficient area for screwing, and can suppress an increase in the number of parts even if screwing positions are different. An object is to provide a screw member, a frame member, and an image display device.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, an image display device according to claim 1 includes an image display panel, a frame member that supports the image display panel, a screw member that is inserted into the frame member, and an outer periphery of the frame member. And a reinforcing member that is screwed using the screw member. The screw member is provided on the substrate portion and the substrate portion, is formed into a cylindrical shape, and is provided with a female screw on the inner periphery. A screw part that is provided adjacent to the screw part, and a leg part having a small width in a direction perpendicular to the press-fitting direction as compared to the outer diameter of the screw part , The frame member is formed with a first recess having a first recess and a second recess in which the substrate portion is disposed on an outer periphery, and a second recess connected to the first recess. The threaded portion in the first recess , The leg portion to the second recess, the screw member is arranged respectively, characterized in that it is inserted.
[0008]
The image display apparatus according to claim 2, in the above invention, the leg portion of the screw member may be provided plural in point symmetry to the center of the substrate portion as a reference.
[0015]
The screw member according to claim 2 is characterized in that, in the above invention, a plurality of the leg portions are provided point-symmetrically with respect to the center of the substrate portion.
[0016]
The frame member according to claim 3 is a frame member that supports the image display panel, wherein a first recess and a second recess are formed on an outer periphery, and the thread portion is provided in the first recess. The leg members are arranged in the second recesses, respectively, and the screw members are inserted.
[0017]
According to a fourth aspect of the present invention, the image display device includes the frame member, the image display panel, and a reinforcing member that is screwed to the outer periphery of the frame member using the screw member. .
[0018]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a screw member, a frame member, and an image display device according to the present invention will be described with reference to the drawings.
[0019]
(Embodiment 1)
First, a screw member of the present invention will be described as Embodiment 1 of the present invention. 1 is a left half sectional front view showing a screw member according to Embodiment 1 of the present invention. FIG. 2 is a plan view of the screw member shown in FIG. FIG. 3 is a right side view of the screw member shown in FIG. 1. The screw member 4 is formed from a metal plate such as stainless steel (SUS304). As shown in FIGS. 1 to 3, the leg portions 4c are provided on both sides of the substrate portion 4a, and the screw portions 4e are provided between the leg portions 4c. It is provided perpendicular to the substrate part 4a. The substrate portion 4a is a substantially rectangular portion, and a protruding edge 4b protruding in an arc shape is integrally provided on one of the long sides. As will be described later, the leg portion 4c serves as a reference position when the center C of the screw portion 4e is decentered, and as shown in FIG. 1, a locking piece 4d having an upper portion protruding outward is provided at the center in the width direction. ing. The screw part 4e is a cylindrical part provided at the center of the substrate part 4a by burring, and has an internal thread 4f on its inner periphery.
[0020]
At this time, as shown in FIGS. 2 and 3, the leg portion 4c is formed to have a smaller width in the direction indicated by the arrow Y in FIG. 2 than the outer edge of the substrate portion 4a. In the screw member 4, the leg portion 4c is formed with a smaller width in the direction indicated by the arrow Y than the outer diameter of the screw portion 4e. Therefore, the screw member 4 can be securely attached to the frame 3 even if the frame 3 is thin if at least a second recess 3c2 for press-fitting the leg 4c into the frame 3 to be described later can be secured. A necessary area can be sufficiently secured.
[0021]
Further, as shown in FIG. 2, the screw portion 4e is provided with its center C slightly decentered in the width direction (the arrow Y direction in the figure) within the plate surface of the substrate portion 4a with respect to the leg portion 4c. . The eccentricity E at this time is the distance between the center C and the intersection point P with reference to the intersection point P of the square diagonal line with the legs 4c on both sides as two sides as shown in FIG. The screw member 4 is attached in such a manner that the center C of the screw portion 4e is decentered within the plate surface of the substrate portion 4a, so that the protruding edge 4b is attached to the frame 3 described later with the position of the protruding edge 4b on the upper side or the lower side. The screwing position can be realized. At this time, the screw member 4 clearly indicates the eccentric direction of the screw portion 4e by the protruding direction of the protruding edge 4b.
[0022]
(Embodiment 2)
Next, a frame member of the present invention will be described as Embodiment 2 of the present invention. FIG. 4 shows a frame member according to Embodiment 2 of the present invention, and is a perspective view of the frame member to which the screw member 4 according to Embodiment 1 is attached. The frame member 3 is a frame body in which a short side 3b is provided on both sides of a long side 3a made of synthetic resin. As shown in FIG. 4, a recess 3c for inserting the screw member 4 is provided on the outer periphery of the short side 3b. It is provided where appropriate.
[0023]
As shown in FIG. 5, the recess 3c has a first recess 3c1 whose lower part is connected to the back side of the frame member 3, and a slit-like second recess 3c2 provided at a predetermined interval along the longitudinal direction of the short side 3b. And have. The first concave portion 3c1 is a portion into which the screw portion 4e of the screw member 4 is inserted. The first concave portion 3c1 corresponds to the thickness of the substrate portion 4a in the screw member 4 around the first recess portion 3c1. Is formed. As shown in FIG. 5, the recess 3e1 has an arcuate upper side in accordance with the shape of the protrusion 4b so that the screw member 4 can be inserted into the recess 3c with the position of the protrusion 4b on the upper side. Is formed. The second recess 3 c 2 is a portion that press-fits the leg 4 c and holds the screw member 4 in the recess 3 c of the frame 3. On the other hand, as shown in FIG. 4, the short side 3b has a flange 3f formed along the longitudinal direction on the inner side.
[0024]
Here, if the screw member 4 can securely hold the screw member 4 in the recess 3c by press-fitting each leg 4c into the corresponding second recess 3c2, the locking piece 4d is not formed. The leg part 4c may be one.
[0025]
In the frame member 3 configured as described above, the screw member 4 is attached by pressing each leg portion 4c into the second recess 3c2 and inserting the screw portion 4e into the first recess 3c1 in FIG. At this time, when the screw member 4 is inserted into the concave portion 3c with the protruding edge 4b facing upward, the center C1 of the screw portion 4e is present on the upper side with reference to the intersection P shown in FIG. On the other hand, when the screw member 4 is inserted into the recess 3c with the protruding edge 4b facing downward, the center C2 of the screw portion 4e exists on the lower side with reference to the intersection point P shown in FIG. . Therefore, as apparent from FIG. 5, the frame member 3 has the center C of the screw portion 4e positioned twice the eccentric amount E, that is, 2E, depending on whether the protruding edge 4b is directed upward or downward. It is possible to shift only in the vertical direction (arrow Y direction in FIG. 5).
[0026]
At this time, the lower portion of the first recess 3 c 1 is connected to the back surface side of the frame member 3. For this reason, when the screw member 4 is inserted into the recess 3c with the protruding edge 4b facing downward, the protruding edge 4b and the threaded portion 4e of the frame member 3 slightly protrude downward from the frame member 3. Since each leg 4c is press-fitted into the corresponding second recess 3c2 of the frame member 3, it is securely inserted into the recess 3c. As shown in FIGS. 2 and 3, the screw member 4 is formed so that the width of the leg portion 4c in the direction indicated by the arrow Y in FIG. 2 is smaller than the outer edge of the substrate portion 4a. For this reason, even if the frame member 3 is thin and the frame 3 itself cannot secure a screw hole for screwing, the frame member 3 has the leg portion 4c, and thus the screw, by the second recess 3c2. The member 4 can be held, and a screw hole exceeding the thickness of the frame member 3 can be secured by the screw member 4.
[0027]
As described above, even if the frame member 3 is thinned, the screw member 4 can be inserted into the recess 3c if the second recess 3c2 for press-fitting the leg 4c can be secured. A sufficient area required for stopping can be secured. Moreover, the frame member 3 can realize two screwing positions by changing the mounting direction of the screw member 4 while being a single component. Therefore, in the frame member 3, it is not necessary to prepare a plurality of types of frame members having different screwing positions, and an increase in the number of parts can be suppressed, and an expensive die is prepared for each frame member having different screwing positions. Therefore, the manufacturing cost can be reduced.
[0028]
(Embodiment 3)
Next, an image display apparatus according to the present invention will be described as a third embodiment of the present invention. FIG. 6 is an exploded perspective view showing a liquid crystal display device using a liquid crystal display panel as an image display device according to Embodiment 3 of the present invention. As shown in FIG. 6, the liquid crystal display device 1 includes a circuit board 2, a frame member 3, a screw member 4, a backlight unit 5, a liquid crystal cell assembly 6, and a bezel 7.
[0029]
The circuit board 2 is provided with a drain circuit, a gate circuit, an interface circuit, and the like. The circuit board 2 is disposed on the back side of the backlight unit 5 and is electrically connected to the liquid crystal cell assembly 6.
[0030]
The backlight unit 5 irradiates the liquid crystal cell assembly 6 with planar light vertically, and includes a light source, a reflection plate, a light guide plate, a diffusion plate and the like (not shown). The backlight unit 5 reflects light emitted from a fluorescent lamp, which is a light source, by a reflection plate provided at the bottom, passes through a light guide plate and a diffusion plate to form planar light, and converts the planar light into a liquid crystal cell. Input to the assembly 6.
[0031]
The liquid crystal cell assembly 6 is formed by integrally overlapping a liquid crystal display cell, a light shielding spacer disposed on the backlight unit 5 side, and the like.
[0032]
The bezel 7 is a reinforcing member made of a rectangular frame that fixes the backlight unit 5 and the liquid crystal cell assembly 6 supported by the frame member 3 to the frame member 3, and the cross section is made of a metal plate such as stainless steel (SUS304). It is formed in an L shape. As shown in FIG. 6, the bezel 7 has screw holes 7 a formed at positions corresponding to the recesses 3 c formed in the frame member 3. At this time, as shown in FIG. 7, the screw hole 7a is formed in advance in the thickness direction in consideration of the eccentric amount E of the center C of the screw portion 4e when the screw member 4 is inserted into the recess 3c of the frame member 3. It is formed in a slightly long slot. Here, in the liquid crystal display device 1 shown in FIG. 7, it is necessary to note that the frame member 3 does not include the screw member 4 that is inserted into the recess 3a.
[0033]
As described above, the liquid crystal display device 1 uses the screw member 4 and the frame member 3 according to the first and second embodiments. For this reason, the liquid crystal display device 1 can change the screwing position in two ways while using the same components, and the position of the protruding edge 4b is arranged on the upper side in FIG. When the screw member 4 is inserted into the recess 3c and when the screw member 4 is inserted into the recess 3c with the screw member 4 being inserted into the recess 3c, the position of the center C of the screw portion 4e is twice the eccentric amount E, that is, only 2E. It can be shifted in the vertical direction (the direction of arrow Y in FIG. 5).
[0034]
For this reason, the frame member 3 can realize two screwing positions by changing the mounting method of the screw member 4, and even if the liquid crystal display device 1 is thinned, the frame member 3 is interposed via the screw member 4. Since the bezel 7 is fixed to the frame member 3, the screw member 4 can sufficiently secure an area necessary for screwing. In addition, since the liquid crystal display device 1 can realize two screwing positions by using the frame member 3 and the screw member 4, it is not necessary to prepare two types of frame members having different screwing positions, and the number of parts is reduced. Can be suppressed. Furthermore, since the liquid crystal display device 1 does not need to prepare an expensive mold for each of a plurality of types of frame members even when screwing positions are different, the frame members can be manufactured at low cost and the manufacturing cost is reduced. can do.
[0035]
(Modification 1)
Next, Modification Example 1 of the screw member and the frame member according to Embodiments 1 and 2 will be described. FIG. 8 is a perspective view showing a screw member according to the first modification. FIG. 9 is a perspective view showing a frame member according to the first modification. FIG. 10 is a front view showing a frame member according to the first modification. The screw member 11 according to the modified example 1 has the substrate portion 11a formed into a square shape, and the leg portion 11c is perpendicular to the substrate portion 11a and is located at a position corresponding to each side of the substrate portion 11a. The center C of the screw portion 11e is eccentrically provided in any direction of the arrows X and Y in the figure with respect to the center P of the substrate portion 11a. At this time, similarly to the screw member 4, the screw portion 11 e is provided with a female screw 11 f on the inner periphery.
[0036]
On the other hand, since the screw member 11 is configured as described above, the concave portion 3c provided on the short side 3b of the frame member 3 has the first concave portion 3c1 in which the screw portion 11e is disposed, as shown in FIGS. In addition to being formed in a square shape when viewed from the front, the second recess 3c2 is provided on the side of the square corresponding to the substrate portion 11a so as to correspond to the four leg portions 11c. At this time, the first concave portion 3c1 has such a size that the screw portion 11e can be disposed at any rotational position in consideration of rotating the base plate portion 11a and inserting the screw member 11 into the concave portion 3c as described later. However, the shape is not particularly limited as long as the screw portion 11e can be disposed. In addition, in the upper part of the first recess 3c1, there is formed a recess 3e that corresponds to the thickness of the substrate portion 11a of the screw member 11 and in which the substrate portion 11a is disposed.
[0037]
Therefore, the screw member 11 and the frame member 3 rotate the base plate portion 11a by 90 ° to press-fit each leg portion 11c into the corresponding second recess portion 3c2 of the frame member 3, and the screw portion 11e into the first recess portion 3c1. By arranging and inserting it into the recess 3c of the frame member 3, four screwing positions can be realized.
[0038]
As described above, the screw member has a regular polygonal shape of a regular pentagon or more, and a leg portion that is a point target perpendicular to the center of the regular substrate is provided perpendicularly to each vertex of the regular polygon. The center of the screw portion may be eccentric with respect to the center. In this case, the frame member is formed with the first recess in a shape in which the screw portion can be disposed, and the second recess is provided corresponding to the position of each leg. If comprised in this way, a screw member and a frame member can implement | achieve still more screwing positions by rotating a screw member for every predetermined angle, and making it insert in a recessed part.
[0039]
(Modification 2)
Next, a second modification of the screw member and the frame member according to the first and second embodiments will be described. FIG. 11 is a perspective view showing a screw member according to the second modification. FIG. 12 is a front view showing a frame member according to the second modification. As shown in FIG. 11, the screw member 13 according to the modified example 2 has a board portion 13 a formed in a circular shape, and eight leg portions 13 c in a pin shape at regular intervals along the circumferential direction on the board portion 13 a. In addition to being erected, the center C of the screw portion 13e is provided eccentric to the center P of the substrate portion 13a in any direction of the arrows X and Y in the figure. At this time, similarly to the screw member 4, the screw portion 13 e is provided with a female screw 13 f on the inner periphery.
[0040]
On the other hand, as shown in FIG. 12, in the frame member 3, the first recess 3c1 in which the screw portion 11e is arranged is formed in a circular shape in the recess 3c provided in the short side 3b, and the leg portion 13c is press-fitted. The second recess 3c2 to be made is a plurality of pin holes. In addition, a recess 3e that corresponds to the thickness of the substrate portion 13a of the screw member 13 and in which the substrate portion 13a is disposed is formed around the upper portion of the first recess 3c1. At this time, the first recessed portion 3c1 has such a size that the screw portion 13e can be disposed at any rotational position in consideration of rotating the substrate portion 13a and inserting the screw member 13 into the recessed portion 3c as described later. However, the shape is not particularly limited as long as the screw portion 13e can be disposed.
[0041]
Accordingly, when the screw member 13 and the frame member 3 are arranged in the first recess 3c1 and are inserted into the recess 3c of the frame member 3, the screw member 13 and the frame member 3 are rotated by 45 ° each leg 13c. Is press-fitted into the corresponding second recess 3c2 of the frame member 3, so that eight screwing positions can be realized. Therefore, the screw member 13 has the base portion 13a as a regular polygon, and the plurality of leg portions 13c are arranged on the vertices of the regular polygon that is point-symmetric with respect to the center of the base portion 13a. By providing the second recess 3c2 corresponding to the leg 13c, more screwing positions can be realized.
[0042]
Here, the screw member 4 is slightly decentered in the width direction (arrow Y direction in FIG. 2) of the substrate portion 4a perpendicular to the press-fitting direction with respect to the leg portion 4c. However, the screw member 4 may be decentered in the direction orthogonal to the arrow Y in FIG. 2 with respect to the center C of the screw portion 4e, and the concave portion 3c of the frame member 3 may be rotated by 90 ° correspondingly. When the center C of the screw part 4e is decentered as described above and the recess 3c of the frame member 3 is formed as described above, the frame member 3 can change the mounting method of the screw member 4 to change the center C of the screw part 4e. Can be shifted by twice the eccentric amount E along the longitudinal direction of the frame member 3.
[0043]
In the first to third embodiments, the case of a liquid crystal display device using a liquid crystal display panel as an image display device using a frame member to which a screw member is inserted has been described. The member and the image display device using the frame member may be an electroluminescence (EL) display device, a plasma display device, or the like as long as it is a flat panel display.
[0044]
【The invention's effect】
As described above, according to the present invention, there is a screw member having a screw portion provided in the substrate portion, and the screw portion is inserted into the first recess formed in the frame member, A leg portion that is provided adjacent to the screw portion and is press-fitted into a second recess portion that is formed close to the first recess portion, wherein the screw portion is formed on the substrate portion. Since the center is provided eccentrically in the plate surface with respect to the reference position, if the screw member can secure a second recess for press-fitting the leg portion into the frame member, the frame member Even if it is thin, a sufficient area for screwing can be secured. In addition, since the screw member is provided with its center decentered within the plate surface with respect to the reference position of the substrate portion, a plurality of screwing positions can be set with one member by changing the direction of insertion into the recess. Since this can be realized, an increase in the number of parts can be suppressed.
[0045]
According to the invention, since the frame member, the image display panel, and the reinforcing member screwed to the outer periphery of the frame member using the screw member are provided, the image display device is used. The frame member can secure an area sufficient for screwing by the screw member, and an increase in the number of parts can be suppressed even if the screwing position is different.
[Brief description of the drawings]
FIG. 1 is a left half sectional front view showing a screw member according to Embodiment 1 of the present invention;
FIG. 2 is a plan view of the screw member shown in FIG.
3 is a right side view of the screw member shown in FIG. 1. FIG.
4 shows a frame member according to Embodiment 2 of the present invention, and is a perspective view of a frame member to which a screw member according to Embodiment 1 is attached. FIG.
5 is an enlarged front view showing a portion A of the frame member shown in FIG. 4. FIG.
FIG. 6 is an exploded perspective view showing a liquid crystal display device using a liquid crystal display panel as an image display device according to Embodiment 3 of the present invention.
7 is a cross-sectional view in the center of a recess of a frame member in the liquid crystal display device shown in FIG.
FIG. 8 is a perspective view showing a screw member according to a first modification.
9 is a perspective view showing a frame member according to Modification 1. FIG.
10 is a front view showing a frame member according to Modification 1. FIG.
FIG. 11 is a perspective view showing a screw member according to Modification 2.
12 is a front view showing a frame member according to Modification 2. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Liquid crystal display device 2 Circuit board 3 Frame member 3a Long side 3b Short side 3c Recessed part 3c1 1st recessed part 3c2 2nd recessed part 3e Indented part 3e1, 3e2 Indented part 4 Screw member 4a Substrate part 4b Projection edge 4c Leg part 4d Locking piece 4e Screw part 4f Female thread 5 Backlight unit 6 Liquid crystal cell assembly 7 Bezel 7a Screw hole 11 Screw member 11a Substrate part 11c Leg part 11e Screw part 11f Female thread 13 Screw member 13a Substrate part 13c Leg part 13e Screw part 13f Female thread

Claims (2)

An image display panel;
A frame member for supporting the image display panel;
A screw member inserted into the frame member;
A reinforcing member that is screwed by using the threaded member to the outer periphery of said frame member,
Equipped with a,
The screw member is provided on the substrate portion, the screw portion that is formed in a cylindrical shape and is provided with a female screw on the inner periphery, and is provided on the substrate portion adjacent to the screw portion. And a leg portion having a small width in a direction orthogonal to the press-fitting direction as compared with the outer diameter of the screw portion,
The frame member is formed with a first recess having a first recess and a second recess in which the substrate portion is disposed on an outer periphery, and a second recess connected to the first recess. The image display device, wherein the screw member is inserted and the screw portion is disposed in the first recess and the leg portion is disposed in the second recess . The screw member, the image display apparatus according to claim 1, characterized in that the legs is provided with a plurality point symmetrically with respect to the center of the substrate portion.

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