JPS63271284A - Image display device and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a display device used as a screen for a television, a VTR, etc., and a method for manufacturing an image display device for a large screen using optical fibers. It is related to.

[Prior Art and its Problems] Conventionally, there is an image display device shown in FIG. 17 as a large screen image display device installed outdoors, for example.

In the figure, 50 is an image display device, which has a panel 51 for displaying images and a large number of optical fibers 52 inside an outer panel (not shown). The light output ends 52b of the optical fibers 52 are connected to the panel 51, and the light input ends 52a of the optical fibers 52 are bundled and connected to a television receiver or slide projector via an imaging lens 55. It is connected to an image projector 54 such as. The image from this image projector 54 is displayed on the panel 51 via the imaging lens 53 and the optical fiber 52.

[Problems to be Solved by the Invention] However, when manufacturing the above conventional image display device 50, a large number of holes 55 are provided in the panel 51, and the holes 55 are
Since the light emitting ends 52b of a large number of optical fibers 52 were inserted and fixed one by one in the holder, there was a problem in that manufacturing was troublesome. In fact, when trying to make a panel 51 with a size of about 5 m square with a fiber pitch lom+s, it is necessary to insert hundreds of thousands of light emitting ends 52b into the holes 55 of the panel 51, which greatly increases the number of manufacturing steps.

The present invention was made to solve the above-mentioned conventional problems, and an object of the present invention is to facilitate the manufacture of an image display device using optical fibers.

[Means for Solving the Problems] In order to achieve the above object, the image display device of the present invention has a panel formed of a plurality of pillow materials stacked in a certain direction, for example, in the vertical direction, and each The light emitting ends of the plurality of optical fibers are sandwiched between the pillow materials. On the other hand, the light input ends are bundled and connected to a connector.

Further, the method for manufacturing an image display device of the present invention includes first pulling out a plurality of optical fibers forward from an optical fiber supply device and placing them at set positions on a plurality of pillow materials arranged at predetermined intervals in the front-rear direction. place During the placement or after completion of the placement, the plurality of optical fibers are bundled at a first predetermined position between the plurality of panels.

Next, another pillow material is stacked on top of each pillow material on which the optical fiber is placed, and the above steps are repeated to stack a predetermined number of pillow materials to form a plurality of panels. moreover,
cutting an optical fiber at a first predetermined position between the plurality of panels to form the light input end; and cutting the optical fiber at a second predetermined position between the plurality of panels; The light output end portion is formed. Finally, connect the light input end to the connector.

[Function] Since the image display device of the present invention sandwiches the optical fiber between a plurality of pillow materials, the optical fiber is placed on the pillow material,
By overlaying the pillow material on top of the pillow material, the panel can be formed and the optical fibers can be connected to the panel, and there is no need to insert the optical fibers into the holes of the panel one by one as in the conventional method.

Further, according to the manufacturing method of the present invention, a plurality of pillow materials are arranged in the front-rear direction of the panel, the light output end of the optical fiber is placed on each pillow material, and the pillow materials are further stacked to form a panel. Therefore, multiple panels connected with optical fibers can be formed in one cycle.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 11 denotes an optical fiber supply device, which has a large number of pobbins 13 wound with optical fibers 12 arranged vertically and horizontally and supported by a rack 14. The above optical fiber 12
is made of synthetic resin, for example. One optical fiber 12, for example 100 in total, is taken out from each bobbin 13 at the bottom of the optical fiber supply device 11 and inserted into a guide plate 16 provided with a guide hole 15. The ends of the 100 optical fibers 12 inserted through the clamp 17
, and pull it out in parallel to the front F, and then pull out the first pillow material A.
1 into the groove 18 formed on the top surface. the distance between the grooves 18;
In other words, the interval between the optical fibers 12 is, for example, ioms.

Next, as shown in FIG. 2, while leaving the clamp 17 as it is, move the guide plate 16 backward R, and
100 optical fibers 12 are narrowed down at a first predetermined position iP1 in the front F of 6.

As the squeezing device, although not shown, a comb or the like widely used in spinning devices is used. The narrowed optical fibers 12 are temporarily fixed with adhesive to form a first stage optical fiber group as shown in FIG.

Next, as shown by the broken line in FIG. 5, the guide plate 16 is moved rearward R, the pillow material B1 is placed just in front of the guide plate 16, and the optical fiber 12 is inserted into a groove (not shown) in the pillow material B1. Next, the guide plate 16 is further moved slightly backward R as shown by the solid line, and the pillow material C1 is placed in front of the guide plate 16 and close to the pillow material B1, and the light is also placed in the groove (not shown). Insert fiber 12. Thereafter, the steps of bundling the optical fibers 12 and the like are repeated to obtain a connection structure of the pillow materials Al, Bl, . . . and the optical fibers 12 as shown in FIG.

In addition, the work of bundling the optical fibers 12 is performed by bundling the optical fibers 12 onto all the pillow materials Al, Bl, ·Φ· of the first stage.
You may perform this after placing 2.

Next, as shown in FIG. 7, an adhesive is applied to the upper surface of the pillow material A1, and then the second layer of pillow material A2 is stacked. At this time, a rubber plate for cushioning may be inserted between both pillow materials Al and A2.The same operation as explained in FIG. 1 is performed for the second stage pillow material A2, and further, As shown in FIG. 8, the optical fibers 12 are bundled at the first predetermined position P1, the pillow material B2 is superposed on the pillow material Bl, and the second
Row pillow material A2. B2. C2,・φ・ and optical fiber 12
Obtain a connected structure with.

Here, the second stage optical fiber 12 is 2nd from the bottom in FIG.
After taking it out from the bobbin 13 in the second stage and inserting it into the guide plate 16 in the second stage shown in FIG.
When bundling the optical fibers 12 in the tiers, the optical fibers are temporarily fixed together with adhesive to form the second tier optical fiber group, and as shown in FIG. Lay it on top of the optical fiber group.

By repeating the above steps, for example, 100 stages of pillow materials are stacked and 100 stages of optical fibers 12 are bundled at the first predetermined position P1 shown in FIG.
The optical fiber 12 is cut to form the light input end 12a of the optical fiber 12, and the second material between the pillow materials Bl, B2φΦ and C1, C2-.
At a predetermined position P2, the optical fiber 12 is cut to form a light output end 12b. The front positions of the frontmost pillow materials Al, A2, . . . are also included in the second predetermined position P2, and the optical fiber 12 is cut here as well to form the light output end portion 12b. In this way, as shown in FIG. 9, a plurality of panels A, B, C, . . . to which the optical fibers 12 are connected are obtained in one manufacturing cycle. A connector 25 is connected to the light input end 12a of each optical fiber 12. Also, each panel A, B, C,...
If necessary, the pillow materials are firmly connected to each other by passing bolts through the top and bottom and tightening them with nuts.

What is important here is that if the work of inserting 100 optical fibers 12 through the guide plate 16 shown in Fig. 8 is done for 100 steps at the beginning of one cycle of the manufacturing process, that is, 100 times, then during that cycle In addition to having the advantage of being able to manufacture a plurality of panels as described above, the process can be repeated many cycles without having to repeat the above-mentioned insertion operation until the optical fiber 12 wound around the bobbin 13 in FIG. 1 is used up. The point is that you can repeat the process to form even more panels.
This greatly simplifies the manufacturing process.

For example, 25 of the panels A, B, C, . . . are used to form a large rectangular panel 26 as shown in FIG. 1O.

The 25 connectors 25 are connected to an extension optical fiber 28 via a connector 27 one by one. The light input ends 28a of the extension optical fibers 28 are bundled by a press device 20 shown in FIG.

This press device 20 is equipped with an upper mold 21 and a lower mold 22, and after placing 100 optical fibers 28 for one stage in the lower mold 22, the optical fibers 28 are pressed with the upper mold 21 while being heated. , 100 optical fibers 28 are melted and bonded to each other to obtain a first stage optical fiber group as shown in FIG. The cross-sectional shape of each optical fiber 28 is circular before deformation, but is deformed into a rectangular shape as shown in the figure by the heating and pressing described above. As a result, if the diameter of the optical fiber 28 before deformation is, for example, one layer (2), after deformation, the width will be about 12, the height will be about 0.8 mm, and the vertical dimension will be 0.2 mm.
It becomes smaller than the proverbial size. In this way, a sheet-like optical fiber group consisting of 100 optical fibers 28 in each stage is formed, and 100 stages are passed through each of the eight frames of the large connector 29 having 25 frames shown in FIG. The light input ends 28a of all the sheet-like optical fiber groups
Gather them together as shown by the dashed line in the figure and overlap them with adhesive.

In this case, since the cross section of each optical fiber 28 is deformed into a rectangular shape, there is no gap between each optical fiber 28, so that the light incidence efficiency is improved. In other words, if a large number of optical fibers 28 with circular cross sections are arranged horizontally and vertically, gaps will be created between each optical fiber 28.
Whereas the light incidence efficiency decreases, in the case of FIG. 13, the light incidence efficiency improves by more than ten percent.

Finally, connect the large panel 26 and the connector 25 to the first
As shown in Figure 5, it is stored in the case 30 and the large panel 2
A glass 31 forming one display surface is attached to the front surface of the display panel 6.
A screen display device 32 of the present invention is obtained. An extension optical fiber 28 is connected to the connector 25 of this screen display device 32 from the outside.
Connect the connector 27 of the The light input end 28a of the extension optical fiber 28 is connected to an image projector 54 via an imaging lens 53, as in the conventional case shown in FIG.

As shown in FIG. 16, the connectors 25 and 27 are connectors 3 of a type in which a large number of pipes are brought together and the optical fibers 12 and 28 are inserted from both sides of each pipe.
It may be set to 5.

[Effects of the Invention] As explained above, according to the image display device of the present invention, there is no need to insert optical fibers one by one into the holes in the panel as in the conventional case, so the manufacturing process is significantly simplified. .

Furthermore, according to the manufacturing method □ of the present invention, a plurality of panels to which optical fibers are connected can be formed in one manufacturing cycle, thereby improving production efficiency.

[Brief explanation of drawings]

1 to 14 are manufacturing process diagrams showing one embodiment of the present invention, FIG. 15 is a vertical sectional view showing an example of the obtained image display device, and FIG. 16 is a perspective view showing a modified example of the connector. ,
FIG. 17 is a schematic configuration diagram showing a conventional example. 11... Optical fiber supply device, 12... Optical fiber/<
, 12a... Light entrance end, 12b... Light exit end, 31
...Image display device, 25...Connector, AI, A2
゜Bl, B2. C1, C2,...Pillow material, F...Front. Figure 3 Figure 4 Figure 6 Figure 11 Figure 73 Figure 15

Claims (2)

[Claims] (1) An image display device in which the light output ends of a plurality of optical fibers are connected to a panel, and the image received from the light input end of the optical fiber is emitted from the light output end to display the image on the panel. The panel is formed of a plurality of pillow materials stacked in a certain direction, and the light output ends of the plurality of optical fibers are sandwiched between each pillow material, and the light input ends are
Image display devices bundled together and connected to a connector. (2) The light output ends of a plurality of optical fibers are connected to the panel, the light input ends of the optical fibers are connected to the connector, and the image received from the light input ends through the connector is output from the light output end. In the method for manufacturing an image display device that displays an image on the panel, the first step is to draw out a plurality of optical fibers in parallel from an optical fiber supply device forward, and to draw out the plurality of drawn out optical fibers in a front-back direction. a second step of placing the pillow at a predetermined position on a plurality of pillow materials arranged at predetermined intervals, and a first predetermined position between the plurality of pillow materials during or after the second step; A third step of bundling a plurality of optical fibers; further layering a pillow material on top of each pillow material on which the optical fibers are placed; and repeating the first, second and third steps described above, thereby forming a predetermined number of fibers. a fourth step of piling up pillow materials to form a plurality of panels arranged in front and back; and a fourth step of cutting the optical fiber at a first predetermined position between the plurality of panels to form the light input end portion. a sixth step of cutting the optical fiber at a second predetermined position between the plurality of panels to form the light output end; and a seventh step of connecting the light input end to a connector. A method of manufacturing an image display device, comprising the steps of: