JP2004317862A - Large video display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce space necessary for the maintenance and adjustment of a large video display device. <P>SOLUTION: A slide guide attached to the upper part of a body part 1 and a slide moving mechanism 30 constituted of a roller 21 fitted to the upper part of a protection glass frame 20 are driven by a driving means 40 and the protection glass frame 20 is moved to the front of the body part 1 in parallel. When returning the protection glass frame 20 to the body part 1 side, the slide guide 3 has a slope in the moving direction of the roller 21 to the body part side by gravity, and when moving the protection glass frame 20 to the front of the body part 1, the slope is canceled and the slide glass 3 is horizontally set. When sufficiently wide space is secured in the front of the body part 1, an interval between the body part 1 and the protection glass frame 20 can be sufficiently secured and space necessary for maintenance and adjustment can be reduced. Since the weight of the protection glass frame 20 is reduced by rolling friction, an inexpensive large video display device 100 allowed to be driven by manpower and quickly and easily operated can be obtained. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a large-sized image display device including a main body having a display unit and a protective frame provided on the front surface of the main unit and covering the periphery of the display unit, and more particularly to space saving for maintenance and adjustment thereof.
[0002]
[Prior art]
In a conventional large-sized image display device, for example, as described in Patent Document 1, when performing maintenance and adjustment thereof, the display unit is moved in parallel to the main body unit in a forward oblique direction by a link mechanism and a screw feed mechanism. To obtain the minimum necessary maintenance space by parallel movement between the display unit and the main unit.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 60-243,692 (FIG. 4)
[0004]
[Problems to be solved by the invention]
However, the conventional large-sized video display device as disclosed in Patent Document 1 has a problem that the size of the link mechanism is limited by the size of the main body of the video display device. When the dimensions of the link mechanism are not sufficient, the distance between the main body and the display after the parallel movement of the display is small, and the maintenance space in the lower front half of the main body is restricted. In addition, when the display unit is opened, the display unit moves in parallel below the lower surface of the main body unit, so that there is a problem that the installation place is restricted.
[0005]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. The space required for maintenance and adjustment is reduced, thereby eliminating the restriction on the installation location, and further performing the operation for maintenance and adjustment. It is an object of the present invention to provide an inexpensive large-sized image display device capable of quickly and easily performing the above.
[0006]
[Means for Solving the Problems]
A large-sized image display device according to the present invention includes a main body having a display, a frame-shaped protection frame provided on a front surface of the main body and covering the periphery of the display, and a slide for moving the protection frame forward of the main body. The slide mechanism is provided with a slide mechanism, one end of which is attached to the main body and the other end of which is extended toward the front of the main body, and which is rotatably mounted on the protective frame and rolls on the slide guide. Since there is a roller for the main body, if there is sufficient space in front of the main body, the space between the main body and the protective frame can be sufficiently provided, and the space required for maintenance and adjustment can be reduced.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiment 1 FIG.
An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view showing a large-sized image display device according to Embodiment 1 of the present invention. The large-sized image display device 100 according to the present embodiment is, for example, a reflective liquid crystal display, and its main body 1 has an image display unit 2 on the front surface, and a frame-shaped protective glass frame 20 surrounds the image display unit 2. Covered. The protective glass frame 20 is for protecting the liquid crystal display from ultraviolet rays and for keeping the temperature inside the housing from suddenly changing. The material is desirably transparent, such as laminated glass, acrylic glass, polycarbonate, or the like. Is used. In addition, the large-sized image display device 100 includes a slide moving mechanism 30 that moves the protective glass frame 20 in parallel to the front of the main body 1. The slide moving mechanism 30 includes a slide guide 3 having one end 31 attached to the main body 1 and the other end 32 extending forward of the main body 1, and a slide guide rotatably attached to the protective glass frame 20. 3 is configured by a roller 21 that rolls and moves. In the present embodiment, the slide guides 3 are provided at two places on the upper part of the main body 1, extend in a direction perpendicular to the front surface of the main body 1, and the rollers 21 are attached to the two upper parts of the protective glass frame 20. Have been. Further, as drive means 40 for operating and controlling the slide moving mechanism 30, pinions 22 are provided so as to be located on both left and right sides below the protective glass frame 20, and these pinions 22 are connected by a shaft 23. The shaft 23 is attached to the bottom surface of the protective glass frame 20 by a bearing unit 24. In addition, both ends of the shaft 23 are processed to have a square cross section (not shown) so that a handle (not shown) can be attached thereto. Racks 4 are provided on both left and right sides of the lower portion of the main body 1 so as to mesh with the pinions 22. Further, a packing 25 is arranged on a peripheral portion of a surface of the protective glass frame 20 which is in contact with the main body portion 1 to perform a waterproof seal.
[0008]
The slide moving mechanism 30 of the large image display device 100 according to the present embodiment will be described in more detail with reference to FIG. As shown in FIG. 2A, a roller guide 5 adapted to the shape of the roller 21 is attached inside the slide guide 3. An inclined plate 6 is provided on the side of the main body 1 of the slide guide 3 adjacent to the roller guide 5. The inclined plate 6 is inclined toward the main body 1 with the pin 7 as a fulcrum, but is not inclined on the opposite side because it is supported by the inclined plate stopper 29. On the lower side of the inclined plate 6, a push-up rod 8 for raising and lowering the inclined plate 6 and a lever part 9 are provided. Further, the lever part 9 is provided for connection for operating the inclination of the inclined plate 6 below the main body 1. Wire 10 is connected. In addition, a lever part 13 to which the connecting wire 11 is attached is provided at the lower part of the main body 1. These connecting wires 10 and 11 are connected by a turnbuckle 12 to adjust the tension. A connecting rod 14 for linking a series of operations is attached to the tip of the lever part 13, and a jack bolt 15 for moving the lever part 13 up and down is attached to the center of the connecting rod 14. Further, pinions 22 provided so as to be located on the left and right sides below the protective glass frame 20 are connected by a shaft 23, and a handle 17 is attached to an end surface of the shaft 23.
When assembling the large-sized image display device 100 according to the present embodiment, the roller 21 attached to the upper part of the protective glass frame 20 is arranged on the roller guide 5 inside the slide guide 3. At this time, the pinion 22 attached to the lower part of the protective glass frame 20 and the rack 4 attached to the lower part of the main body 1 are arranged so as to mesh with each other.
[0009]
Next, the operation will be described with reference to FIG. First, when the protective glass frame 20 is moved to the front of the main body 1 in order to perform maintenance and adjustment of the video display unit 2, the jack bolt 15 installed at the lower part of the main body 1 is turned in a direction to push up. Then, the connecting rod 14 is pushed up, and the one end 13a of the lever component 13 is pushed up. The connecting wire 11 is attached to the other end 13b of the lever component, and the lever component 13 pulls down the connecting wire 11. Thereby, the connecting wire 10 connected to the connecting wire 11 is also pulled down, and one end 9a of the lever component 9 connected to the connecting wire 10 is pulled down. A push-up rod 8 is attached to the other end 9b of the lever part 9, and the one end 9a of the lever part 9 is pulled down by the connecting wire 10, and at the same time, the push-up rod 8 is pushed up, and the inclined plate 6 having the pin 7 as a fulcrum. And the inclined plate 6 is in a horizontal state. In this state, the handle 17 is rotated counterclockwise (in the direction of arrow A in the figure) to move the protective glass frame 20 forward of the main body 1. A sufficient interval is provided between the main body 1 and the protective glass frame 20, and maintenance such as replacement and cleaning of the liquid crystal display serving as the image display unit 2 or cleaning of the inside of the protective glass frame 20 is performed during this interval.
[0010]
When the maintenance is completed and the protective glass frame 20 is returned to the main body 1 side, the handle 17 is rotated clockwise (in the direction of arrow B in the figure), and the protective glass frame is moved to a position where the roller 21 rides on the inclined plate 6. 20 is brought closer to the main body 1 side. When the jack bolt 15 is turned in the lowering direction in this state, the connecting rod 14 is lowered and the one end 13a of the lever part 13 is also lowered, so that the other end 13b is raised, and the force of the lever part 13 to pull down the connecting wires 11 and 10 is lost. . As a result, one end 9a of the lever component 9 connected to the connecting wire 10 moves upward, and the push-up bar 8 moves downward. The inclined plate 6 that has lost the support of the push-up bar 8 operates so as to be inclined toward the main body 1 by the amount of the lowering of the push-up bar 8. For this reason, the roller 21 riding on the inclined plate 6 rolls and moves toward the main body 1 by the weight of the protective glass frame 20. In this state, the packing 25 is pressed against the main body 1 by the weight of the protective glass frame 20, and the main body 1 and the protective glass frame 20 come into close contact with each other. A drain 16 is provided around the image display unit 2 of the main body 1, and the moisture that has passed through the packing 25 flows downward along the drain 16.
[0011]
As described above, in the first embodiment, the main body 1 having the video display unit 2, the protective glass frame 20 provided on the front surface of the main body 1 and covering the periphery of the video display unit 2, The slide movement mechanism 30 includes a slide movement mechanism 30 for moving the slide guide 3 parallel to the front of the main body 1, the slide movement mechanism 30 having one end attached to the main body 1 and the other end extending forward of the main body 1. And a roller 21 rotatably mounted on the protective glass frame 20 and rolling on the slide guide 3, so that the lightweight protective glass frame 20 can be easily moved forward of the main body 1 by the roller 21 with respect to the main body 1. Can be moved. In addition, if there is sufficient space in front of the main body 1, the space between the main body 1 and the protective glass frame 20 can be sufficiently provided, so that the space required for maintenance and adjustment is reduced, and the installation location is restricted. Will be resolved. Furthermore, since it has a simple structure, it can be manufactured at low cost and has sufficient strength. Further, since the slide moving mechanism 30 is driven and controlled by the driving means 40, the movement of the protective glass frame 20 can be stopped halfway, and the operation can be performed safely. When the protective glass frame 20 is returned to the main body 1 side, the slide guide 3 has an inclination such that the roller 21 moves toward the main body 1 by the weight of the protective glass frame 20. When the camera is moved forward of the main body 1, a mechanism is provided for switching so as to be horizontal without the inclination, so that the weight of the protective glass frame 20 is reduced by rolling friction, and it can be driven sufficiently by human power. Can be performed quickly and easily. Further, since the pinions 22 constituting the driving means 40 are provided on both left and right sides of the protective glass frame 20 and these pinions 22 are connected by the shaft 23, the protective glass frame 20 is slid when the protective glass frame 20 is slid. The two ends of the protective glass frame 20 can be moved at the same time, and the parallel movement of the protective glass frame 20 can be performed quickly and easily. Further, a packing 25 is disposed on the periphery of the surface of the protective glass frame 20 in contact with the main body 1, and the packing 25 is pressed against the main body 1 by the weight of the protective glass frame 20 by its own weight. Therefore, a large-sized image display device 100 having excellent waterproof performance and capable of being installed outdoors can be obtained.
[0012]
Embodiment 2 FIG.
FIG. 3 is a cross-sectional view illustrating a configuration of a large-sized image display device according to Embodiment 2 of the present invention. The large-sized video display device 101 according to the present embodiment has substantially the same configuration as the large-sized video display device 100 according to the first embodiment, except for the structure of the slide guide 3a constituting the slide moving mechanism 30a. In the present embodiment, in order to incline the slide guide 3a over the entire stroke, the inclined plate 6a is provided up to the tip of the slide guide 3a, and the fulcrum 7a is provided at the foremost end. The direction of the inclination of the inclined plate 6a is operated by a jack bolt 15 provided at the lower part of the main body 1, and the protective glass frame 20 is slid to the front of the main body 1 or to the main body 1 side.
[0013]
The operation will be described. First, when the protective glass frame 20 is moved to the front of the main body 1 in order to perform maintenance and adjustment of the video display unit 2, the jack bolt 15 installed at the lower part of the main body 1 is turned in a direction to push up. Then, the connecting rod 14 is pushed up, and the one end 13a of the lever component 13 is pushed up. The connecting wire 11 is attached to the other end 13b of the lever component, and the lever component 13 pulls down the connecting wire 11. Thereby, the connecting wire 10 connected to the connecting wire 11 is also pulled down, and one end 9a of the lever component 9 connected to the connecting wire 10 is pulled down. A push-up bar 8 is attached to the other end 9b of the lever component 9, and one side 9a of the lever component 9 is pulled down by the connecting wire 10, and at the same time, the push-up bar 8 is pushed up and the inclined plate 6a having the pin 7a as a fulcrum. , The inclined plate 6 a is inclined forward of the main body 1, and the roller 21 riding on the inclined plate 6 a moves forward of the main body 1 by the weight of the protective glass frame 20. A sufficient space is provided between the main body 1 and the protective glass cover 20, and maintenance such as replacement and cleaning of the liquid crystal display serving as the image display unit 2 or cleaning of the inside of the protective glass frame 20 is performed during this interval. When the maintenance is completed and the protective glass frame 20 is returned to the main body 1 side, when the jack bolt 15 is turned in the lower direction, the connecting rod 14 is lowered, and the one end 13a of the lever part 13 is also lowered. As a result, the lever component 13 loses the force of pulling down the connecting wires 11 and 10. As a result, one end 9a of the lever component 9 connected to the connecting wire 10 moves upward, and the push-up bar 8 moves downward. The inclined plate 6a that has lost the support of the push-up bar 8 operates so as to have a slope toward the main body 1 side by the amount that the push-up bar 8 is lowered. As a result, the roller 21 riding on the inclined plate 6a moves toward the main body 1 by the weight of the protective glass frame 20. In this state, the packing 25 is pressed against the main body 1 by the weight of the protective glass frame 20, and the main body 1 and the protective glass frame 20 come into close contact with each other.
[0014]
As described above, in the second embodiment, when the slide guide 3a returns the protective glass frame 20 to the main body 1 side, the inclination of the direction in which the roller 21 moves toward the main body 1 due to the weight of the protective glass frame 20 is reduced. Also, when the protective glass frame 20 is moved to the front of the main body 1, a mechanism is provided for switching the roller 21 so that the roller 21 has an inclination to move forward of the main body 1 by the weight of the protective glass frame 20. Therefore, the protective glass frame 20 can be moved by using its own weight, and the members such as the pinion 22 and the rack 4 constituting the driving means 40 can be omitted as compared with the first embodiment. An inexpensive large-sized image display device 101 having a simple structure can be obtained.
[0015]
Embodiment 3 FIG.
FIG. 4 is a cross-sectional view illustrating a configuration of a large-sized image display device according to Embodiment 3 of the present invention. The large-sized image display device 102 according to the present embodiment is provided with a forward moving wire 18 and a backward moving wire 19 to assist the driving means 40a for slidingly moving the protective glass frame 20. The forward moving wire 18 is fixed to a forward moving wire fixture 18a provided in front of the slide guide 3b, and is wound up via a forward moving wire guide roller 18b, a horizontal guide roller 26, and a vertical guide roller 27. It is wound on a pulley 28. The rearward movement wire 19 is fixed to a rearward movement wire fixing device 19a provided behind the slide guide 3b, and passes through a rearward movement wire guide roller 19b, a horizontal guide roller 26, and a vertical guide roller 27. It is taken up by a take-up pulley 28. The take-up pulley 28 is attached to the end of the shaft 23 to which the pinion 22 is attached, and is rotated by the handle 17a. Other configurations are almost the same as those in the first embodiment, and thus description thereof is omitted. However, it is not necessary to provide an inclined plate for the slide guide 3b of the slide moving mechanism 30b in the present embodiment, and a horizontal roller guide may be provided over the entire stroke of the slide guide 3b.
[0016]
The operation will be described. First, when the protective glass frame 20 is moved forward of the main body 1 for maintenance and adjustment of the image display unit 2, the handle 17a is rotated counterclockwise (in the direction of arrow A in the figure), and the slide guide is rotated. Winding pulley 28 turns forward movement wire 18 fixed to forward movement wire fixture 18a provided in front of 3b via front movement wire guide roller 18b, horizontal guide roller 26 and vertical guide roller 27. To take up. Thereby, the protective glass frame 20 is moved forward of the main body 1. A sufficient space is provided between the main body 1 and the protective glass cover 20, and maintenance such as replacement and cleaning of the liquid crystal display serving as the image display unit 2 or cleaning of the inside of the protective glass frame 20 is performed during this interval. When the maintenance is completed and the protective glass frame 20 is to be returned to the main body 1 side, the handle 17a is rotated clockwise (in the direction of arrow B in the figure), and the rearward movement wire provided behind the slide guide 3b. The protective glass frame 20 is formed by winding the rearward movement wire 19 fixed to the fixture 19a onto the winding pulley 28 via the rearward movement wire guide roller 19b, the horizontal guide roller 26, and the vertical guide roller 27. It is moved to the main body 1 side.
[0017]
As described above, in the third embodiment, the forward moving wire 18 and the backward moving wire 19 are provided to assist the driving means 40a for slidingly moving the protective glass frame 20, so that the sliding moving mechanism 30b is inclined. There is no need to provide a member such as a plate or a lever part, and the protective glass frame 20 can be easily and safely moved manually without relying on the weight of the protective glass frame 20.
[0018]
【The invention's effect】
As described above, according to the present invention, since the protection frame of the large-sized video display device can be easily moved to the front of the main body, if there is sufficient space in front of the main body, the space between the main body and the protection frame can be sufficiently increased. The space required for maintenance and adjustment is reduced as compared with the related art, and restrictions on the installation location are eliminated. In addition, since it has a simple structure, it can be manufactured at low cost, and sufficient strength can be obtained.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a large-sized image display device according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view illustrating a configuration of a large-sized image display device according to the first embodiment of the present invention.
FIG. 3 is a cross-sectional view illustrating a configuration of a large-sized image display device according to a second embodiment of the present invention.
FIG. 4 is a schematic perspective view showing a large-sized image display device according to a third embodiment of the present invention.
[Explanation of symbols]
1 body part, 2 image display part, 3, 3a, 3b slide guide, 4 rack, 5 roller guide, 6, 6a inclined plate, 7, 7a pin, 8 push-up bar,
9,13 lever parts, 10,11 connecting wire, 12 turnbuckle,
14 connecting rod, 15 jack bolt, 16 drainer, 17, 17a handle, 18 forward moving wire, 18a forward moving wire fixture,
18b wire guide roller for forward movement, 19 wire for backward movement,
19a wire fixing device for backward movement, 19b wire guide roller for backward movement, 20 protective glass frame, 21 rollers, 22 pinion, 23 shaft,
24 bearing unit, 25 packing, 26 horizontal guide roller,
27 vertical guide roller, 28 take-up pulley, 29 inclined plate stopper,
30, 30a, 30b slide moving mechanism, 31 one end, 32 other end,
40, 40a Driving means, 100, 101, 102 Large image display device.

Claims (7)

A main body having a display, a frame-shaped protection frame provided on a front surface of the main body and covering the periphery of the display, and a slide moving mechanism for moving the protection frame forward of the main body; The mechanism includes a slide guide having one end attached to the main body and the other end extending forward of the main body, and a roller rotatably attached to the protection frame and rolling on the slide guide. A large-sized video display device comprising: The large-sized image display device according to claim 1, wherein the slide moving mechanism is driven and controlled by a driving unit. 2. The large-sized image display device according to claim 1, wherein the slide guide is inclined in a direction in which the roller is moved toward the main body by the weight of the protective frame when returning the protective frame to the main body. 3. And a mechanism for switching the protection frame to be horizontal without the inclination when moving the protection frame forward of the main body. 2. The large-sized image display device according to claim 1, wherein the slide guide is inclined in a direction in which the roller is moved toward the main body by the weight of the protective frame when returning the protective frame to the main body. 3. And a mechanism for switching the roller so as to have an inclination in a direction in which the roller moves forward by the weight of the protective frame when the protective frame is moved forward of the main body. A large image display device characterized by the following. 3. The large-sized image display device according to claim 2, wherein said driving means are provided on both left and right sides of said protection frame, and said driving means are connected by a shaft. 2. The large-sized image display device according to claim 1, wherein the protection frame is provided with a packing at a peripheral edge of a surface that is in contact with the body portion, the packing being in close contact with the body portion. 3. . 7. The large-sized image display device according to claim 6, wherein the packing is pressed against the main body by the weight of the protective frame.

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