JP2010008795A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device that avoids the occurrence of abnormality to display on a display panel even when a member supporting a peripheral edge of the display panel has a large shrinkage width, and stably supports the display panel even if the member supporting the peripheral edge of the display panel expands to avoid a shift in position of the display panel. <P>SOLUTION: One edge of the display panel is supported by a support belt 41, which is provided with a gutter-shaped recess along the one edge. Further, a support piece 47 supporting the corner of the display panel positioned at an end of the one edge is fixed to a back-light chassis, and also provided with an engagement piece 50 which engages the recess, a projection is provided on a bottom surface of the recess, and the engagement piece 50 is provided with an engagement groove 50a which engages with the projection. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a display device including a member that supports a display panel.

  A liquid crystal display device that displays an image has an optical sheet that diffuses light disposed on the front side of a light source such as a fluorescent tube or a white LED, and a display panel that is disposed on the front side of the optical sheet. Light is diffused by an optical sheet, and the diffused light is projected onto a display panel to display an image.

In the liquid crystal display device described in Patent Document 1, in order to support the display panel, a frame member is attached to an edge portion of the display panel, and the frame member is fixed to a member that supports the optical sheet. Since the frame member contracts due to cooling, the display panel may be compressed by the frame member when the frame member is cooled, and an abnormality may occur in the display of the display panel. Therefore, an elastic member is provided between the frame member and the display panel, and when the frame member contracts, the elastic member is compressed to avoid occurrence of an abnormality in display on the display panel.
JP 2005-107498 A

  However, since the space between the frame member and the display panel is small, only a small elastic member can be used, and the compression width of the elastic member is limited. For this reason, the elastic member cannot cope sufficiently when the contraction width of the frame member is large, and there is a possibility that an abnormality may occur in the display of the display panel. Further, since the frame member expands by heating, the frame member expands when the frame member is heated, and the support of the display panel becomes insufficient, and the position of the display panel may be deviated.

  The present invention has been made in view of such circumstances, and even when the contraction width of the frame member is large, it is possible to avoid occurrence of an abnormality in the display of the display panel, and when the frame member is extended. An object of the present invention is to provide a display device capable of avoiding deviations in the position of the display panel.

  A display device according to the present invention, a chassis that supports a light source, a rectangular display panel that is disposed to face the light source, displays an image, a support band that supports one edge of the display panel, And a support piece for supporting a corner portion of the display panel located at an end portion of the one edge, wherein the support piece is fixed to the chassis and provided on one of the support band or the support piece. A hook-shaped recess along the one edge, an engagement piece that is provided on the other of the support band or the support piece, and that engages with the recess, and a protrusion provided on the bottom surface of the recess The engagement piece is provided along the recess, and the engagement groove engages with the protrusion.

  In the display device according to the present invention, for example, a rectangular display panel is opposed to a light source supported on the front surface of the chassis, and one edge of the display panel is supported by a support band. And a bowl-shaped recess along the one edge. Further, a support piece for supporting a corner portion of the display panel located at the end portion of the one edge portion is fixed to the chassis, and an engagement piece for engaging with the concave portion is provided on the support piece. Then, a protrusion is provided on the bottom surface of the recess, and an engagement groove that engages with the protrusion is provided in the engagement piece, so that when the support band expands and contracts, the engagement by the protrusion and the engagement groove. As the piece is guided, the engaging piece and the recess slide, and the position of the support band relative to the support piece fixed to the chassis is adjusted. For this reason, the dimensions of the entire support band and the support piece are hardly changed, and even if the support band contracts, the support band and the support piece do not compress the display panel, and the display panel is stable even if the support band is extended. Supported by

  The display device according to the present invention includes a rib projecting from an inner surface of the recess, an extension from the engagement piece toward the inner surface of the recess, and the engagement between the rib and the bottom surface of the recess. And a hook-like locking portion to be stopped.

  In the display device according to the present invention, the engagement piece is locked by locking the hook-shaped engagement portion extending from the engagement piece between the rib provided on the inner surface of the depression and the bottom surface of the depression. Is prevented from coming off from the recess.

  The display device according to the present invention extends from the edge of the support band toward the chassis, and includes a first extension plate along the longitudinal direction of the support band, and the edge of the support piece toward the chassis. A second extending plate adjacent to the first extending plate, a slit extending along the longitudinal direction of the support band, and provided on one of the first extending plate or the second extending plate; , Projecting from the other of the first extension plate or the second extension plate toward one of the first extension plate or the second extension plate, a projection plate facing the slit, and the projection plate And a claw portion inserted into the slit, wherein the claw portion is slidably contacted with an edge portion along the longitudinal direction of the slit.

  In the display device according to the present invention, for example, a first extension plate extending toward the chassis along the longitudinal direction of the support band is provided at the edge of the support band, and the first extension is provided at the edge of the support piece. A second extending plate that is located next to the plate and extends to the chassis side is provided, a slit is provided in the second extending plate along the longitudinal direction of the support band, and the protruding plate that faces the slit is the first. When the support band expands and contracts by projecting from the extension plate, providing a claw portion to be inserted into the slit on the projection plate, and bringing the claw portion into slidable contact with the edge portion along the longitudinal direction of the slit, The claw portion slides in contact with the edge portion along the longitudinal direction of the slit, and movement in a direction perpendicular to the longitudinal direction is restricted.

  In the display device according to the present invention, for example, a rectangular display panel is opposed to a light source supported on the front side of the chassis, and one edge of the display panel is supported by a support band. The support band is provided with a bowl-shaped recess along the one edge. Further, a support piece for supporting a corner portion of the display panel located at the end portion of the one edge portion is fixed to the chassis, and an engagement piece for engaging with the concave portion is provided on the support piece. Then, a protrusion is provided on the bottom surface of the recess, and an engagement groove that engages with the protrusion is provided in the engagement piece, so that when the support band expands and contracts, the engagement by the protrusion and the engagement groove. As the piece is guided, the engaging piece and the recess slide, and the position of the support band relative to the support piece fixed to the chassis is adjusted. For this reason, the dimensions of the support band and the support piece as a whole are hardly changed, and even if the support band contracts, the support band and the support piece are prevented from compressing the display panel. It can support stably and can avoid that the position of a display panel deviates.

  Hereinafter, a display device according to the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a schematic exploded perspective view showing a display device, and FIG. 2 is a schematic perspective view showing a display panel to which a first support member is attached.

  In the figure, reference numeral 1 denotes a front cabinet 1 having a rectangular opening, and a rectangular display panel 3 is provided on the back side of the front cabinet 1. A rectangular bezel 2 is attached to the front edge of the display panel 3, and the rear edge of the display panel 3 is supported by a panel support 4 having a rectangular frame shape. The display panel 3 is sandwiched between the bezel 2 and the panel support 4.

  Further, on the back side of the panel support 4, an optical sheet 5 for light control, a diffusion plate 6 for diffusing light, a diffusion plate support 7 for supporting the diffusion plate 6, a plurality of fluorescent tubes 8a, 8a,. .. A box-shaped backlight chassis 8 that houses 8a and a rear cabinet 9 are provided in this order.

  The panel support 4 includes two first support members 14 and 14 that form a U-shaped casing, and two rod-shaped second support members 15 and 15. The first support member 14 supports one edge along the longitudinal direction of the display panel 3 and a corner located at both ends of the one edge, and the second support member 15 is one edge of the display panel 3. The other edge perpendicular to the part is supported. Further, the end of the first support member 14 and the end of the second support member 15 are connected.

  3 is a partially enlarged exploded perspective view of the first support member 14 viewed from the front side, FIG. 4 is a partially enlarged exploded perspective view of the first support member 14 viewed from the back side, and FIG. 5 is the first support. 6 is a schematic front view of the member 14, FIG. 6 is a schematic rear view of the first support member 14, FIG. 7 is a schematic plan view of the first support member 14, and FIG. 8 is a schematic view taken along line VIII-VIII in FIG. It is side surface sectional drawing.

The first support member 14 is resin-molded. As shown in FIG. 3, the first support member 14 includes a support band 41 that supports one edge along the longitudinal direction of the display panel 3, and the support band 41. Two L-shaped support pieces 47 and 47 are connected to both ends and support the corners.
An elongated and shallow groove is formed at the edge along the longitudinal direction of the front surface of the support band 41. A seal member 42 is attached to the groove, and one edge portion of the display panel 3 is placed on the seal member 42. Further, a notch 41 a is formed at the center in the width direction at the end of the support band 41.

  As shown in FIG. 4, a bowl-shaped recess 43 is provided on the back surface of the end portion of the support band 41. The recess 43 protrudes at the center in the width direction on the back surface of the belt-like support band 41, and faces the first side plate 43 a along the longitudinal direction of the support band 41 and the first side plate 43 a. Between the first side plate 43a and the second side plate 43b projecting outward from one edge of the display panel 3, and the end of the support band 41. The first side plate 43a and the back side 43c perpendicular to the second side plate 43b are provided at a position separated by an appropriate length. Further, the back surface portion of the support band 41 surrounded by the first side surface plate portion 43 a, the second side surface plate portion 43 b and the back surface portion 43 c is used as a bottom surface portion 43 d of the recess 43.

  The first side face plate portion 43a extends toward the notch 41a formed in the support band 41, and faces the notch 41a at the extending end of the first side face plate portion 43a, and faces inward of the recess 43. A rib 44 parallel to the bottom surface portion 43d is provided. Further, the bottom surface portion 43d is provided with a cylindrical protrusion 45 protruding toward the back surface so as to face the rib 44 with the notch 41a interposed therebetween.

  Further, a rectangular first extending plate 46 extending in the back direction along the second side plate portion 43b and having a longitudinal direction in the direction along the second side plate portion 43b is connected to the second side plate portion 43b. ing. A projecting plate 46 a projecting in the longitudinal direction is connected to an end portion of the first extending plate 46, and a truncated pyramid-like claw perpendicular to the first extending plate 46 is connected to the projecting end of the projecting plate 46 a. The part 46b is erected.

  Next, the support piece 47 will be described. An L-shaped seal member 48 is attached to the front surface of the L-shaped support piece 47 and on the inner edge of the support piece 47, and the corner portion of the display panel 3 is placed on the seal member 48. Further, two rectangular parallelepiped elastic members 49, 49 are provided on the front surface of the support piece 47 on the outside of the longitudinal portion of the seal member 48 and the outside of the portion perpendicular to the longitudinal portion of the seal member 48.

  A rectangular engagement piece 50 extends from an end of a portion perpendicular to the longitudinal portion of the support piece 47 (hereinafter, a portion perpendicular to the longitudinal portion of the support piece 47 is referred to as a short portion of the support piece 47). On the front surface of the engagement piece 50, an engagement groove 50a along the engagement piece 50 is formed. Further, a hook-shaped locking portion 50 b adjacent to the front surface of the engagement piece 50 extends inward along the longitudinal direction of the engagement piece 50 from the side surface of the engagement piece 50.

  A rectangular second extending plate 51 extends from the outer edge of the short portion of the support piece 47 toward the back side, and the second extending plate 51 extends in the direction along the engagement piece 50 in the longitudinal direction. A rectangular slit 51a having a direction is opened. The width dimension of the slit 51a is substantially the same as the width dimension X (see FIG. 7) on one side of the claw part 46b, and the longitudinal dimension of the slit 51a is on the other side perpendicular to one side of the claw part 46b. It is larger than the width dimension Y (see FIG. 7).

  On the back surface of the support piece 47, the end of the longitudinal portion of the support piece 47 and the end of the portion perpendicular to the longitudinal portion of the support piece 47 are inserted into holes (not shown) provided in the backlight chassis 8. Two fixing protrusions 52 and 52 are provided, respectively. The support protrusions 47 are fixed to the backlight chassis 8 by fitting the fixing protrusions 52 and 52 into the holes.

  Next, the connection of the support band 41, the support piece 47, the first extension plate 46, and the second extension plate 51 will be described.

  The end portion of the short portion of the support piece 47 and the end portion of the support band 41 are opposed to each other in the engagement groove 50a so that the first extension plate 46 and the second extension plate 51 are adjacent to each other. The protrusion 45 is engaged, the locking portion 50b is slidably locked between the rib 44 and the bottom surface portion 43d, and the engaging piece 50 is slidable in the recess 43. Inserted. The other side of the claw portion 46b is inserted into the slit 51a so as to contact the front side edge and the back side edge of the slit 51a. The claw portion 46b can slide in the same direction as the engagement piece 50 at the slit 51a.

  In the support band 41 and the first extension plate 46 of the first support member 14, when the first support member 14 is cooled, the support band 41 and the first extension are shown as indicated by solid line arrows in FIG. The plate 46 contracts toward the center, and is guided by the protrusion 45 and the engagement groove 50a, so that the engagement piece 50 slides in the recess 43, and the claw portion 46b slides in the slit 51a. When the first support member 14 is heated, the support band 41 and the first extension plate 46 extend to the end side as shown by broken arrows in FIG. 5, and the protrusion 45 and the engagement groove 50a are formed. The engaging piece 50 is guided to slide in the recess 43, and the claw portion 46b slides in the slit 51a.

  Even if the first support member 14 is heated or cooled, since the support piece 47 is fixed to the backlight chassis 8, the support band 41 expands and contracts between the support pieces 47 and 47, and the panel support 4 The overall dimensions hardly change.

In the display device according to the present invention, when the support band 41 expands and contracts, the protrusion 45 is guided by the engagement groove 50a, and the engagement piece 50 and the recess 43 slide, and the backlight chassis. The position of the support band 41 with respect to the support piece 47 fixed to 8 is adjusted, and even if the support band 41 expands and contracts, the dimensions of the panel support 4 hardly change.
For this reason, even if the support band 41 contracts, the support band 41 and the support piece 47 are prevented from compressing the display panel 3, and the occurrence of an abnormality in the display on the display panel 3 is avoided. Even when the support band 41 is extended, the display panel 3 is stably supported, and the position of the display panel 3 can be avoided from being biased.

  In the display device according to the present invention, the engaging piece 50 is engaged with the concave portion 50b by engaging the engaging portion 50b extending from the engaging piece 50 between the rib 44 and the bottom surface portion 43d. 43 can be prevented from coming off.

  Further, in the display device according to the present invention, the protrusion of the protruding plate 46 a that extends from the edge of the support band 41 to the back side and protrudes from the first extension plate 46 along one edge of the display panel 3. A claw portion 46b is erected at the end, and a slit 51a is provided at an end portion of the second extending plate 51 that extends from the outer edge portion of the support piece 47 to the back surface side. When the support band 41 expands and contracts by being brought into contact with the edge on the side and inserted into the slit 51a, the claw portion 46b slides in contact with the edge on the front side and the back side of the slit 51a. The movement of 46b in the front-rear direction is restricted, and the alignment of the positions of the support band 41 and the support piece 47 in the front-rear direction is maintained.

  In the embodiment, the recess 43 is provided in the support band 41 and the engagement piece 50 is provided in the support piece 47. However, the engagement piece 50 may be provided in the support band 41 and the recess may be provided in the support piece 47. . In the embodiment, the protruding plate 46a is provided with the claw portion 46b, and the second extending plate 51 is provided with the slit 51a. However, the first extending plate 46 is provided with a slit, and the second extending plate 51 is provided with the slit 51a. A protruding plate may be provided, and a claw portion may be provided on the protruding plate. Further, the support piece 47 is not limited to the L shape, and may be formed in a band shape, and includes an other edge portion perpendicular to one edge portion of the display panel 3 and two corner portions located at both ends of the other edge portion. You may form in a U shape so that it may support. A white LED panel may be used instead of the fluorescent tube 8a.

1 is a schematic exploded perspective view showing a display device according to an embodiment. It is a typical perspective view which shows the display panel which attached the 1st supporting member. FIG. 3 is a partially enlarged exploded perspective view of a first support member viewed from the front side. FIG. 6 is a partially enlarged exploded perspective view of a first support member viewed from the back side. It is a schematic front view of the first support member. It is a simplified rear view of the first support member. It is a schematic plan view of a first support member. FIG. 6 is a schematic side sectional view taken along line VIII-VIII in FIG. 5.

Explanation of symbols

3 Display panel 8 Backlight chassis (chassis)
8a Fluorescent tube (light source)
41 Support Band 43 Recess 44 Rib 45 Projection 46 First Extension Plate 46b Claw 47 Support Piece 50 Engagement Piece 50a Engagement Slot 50b Locking Part 51 Second Extension Plate 51a Slit

Claims (3)

A chassis that supports a light source, a rectangular display panel that is arranged to face the light source, displays an image, a support band that supports one edge of the display panel, and an end portion of the one edge In a display device comprising a support piece for supporting a corner portion of the display panel positioned,
The support piece is fixed to the chassis;
Provided on one of the support band or the support piece, and a bowl-shaped recess along the one edge,
An engagement piece that is provided on the other of the support band or the support piece and engages the recess;
A protrusion provided on the bottom surface of the recess;
A display device comprising: an engaging groove provided on the engaging piece along the concave portion, and engaging with the protruding portion. A rib protruding from the inner surface of the recess;
A hook-like locking portion that extends from the engagement piece toward an inner surface of the recess and is locked between the rib and the bottom surface of the recess. The display device according to 1. Extending from the edge of the support band to the chassis side, a first extension plate along the longitudinal direction of the support band;
A second extension plate extending from the edge of the support piece to the chassis side, adjacent to the first extension plate;
It is provided on one of the first extension plate or the second extension plate, and a slit along the longitudinal direction of the support band;
Projecting toward one of the first extension plate or the second extension plate from the other of the first extension plate or the second extension plate, and a protruding plate facing the slit;
Provided on the protruding plate, and provided with a claw portion to be inserted into the slit,
The display device according to claim 1, wherein the claw portion is slidably contacted with an edge portion along a longitudinal direction of the slit.

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