JPS607798B2 - Display device using light guide - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device having a light guide formed in the form of a sheet with optical fibers and an optical system for inputting light into the light guide. By forming a light leakage part in the form of , it is intended to obtain a display in the desired form by the light leaked from the light leakage part.

Modern times are the age of advertising, and the age of publicity, but advertising,
Typical means of advertising have traditionally been to illuminate the back side of a translucent board with advertisements and promotional items written on it with fluorescent lights, or simply illuminate the display board with advertising and promotional items written on it with incandescent lights. There are those that are illuminated with body lamps, etc. However, since these display means illuminate the display board on which advertisements, promotional matters, etc. are written, a light source for illuminating the display board must be placed near the display board. When the lighting equipment and display boards are arranged in multiple locations, there is a problem in that a large amount of cost is required to maintain and manage the lighting equipment and display boards at each location. Furthermore, when it is attempted to attach the above-mentioned display device to the wall of a high-rise building, the installation work requires great difficulty and labor, and maintenance and management are also not easy. There have also been proposals to use optical fibers to pass light through the optical fibers and use the light leaked from the optical fibers as an advertising light source. The light leakage part of the fiber is arranged to match the display form (for example, letters) of the advertisement (see, for example, Japanese Utility Model Application Publication No. 116978/1983), or the optical fiber is attached to the surface of the advertisement etc. In both cases, it is necessary to arrange the optical fibers according to the display form of the advertisement or the form of the advertising material. Alternatively, the optical fiber wiring had to be changed for each advertisement, making it unsuitable for mass production in factories. The present invention has been made in order to solve the above-mentioned drawbacks of the prior art, and in particular, a display board is constructed by arranging at least one light guide in the form of a folded sheet on a sheet-like substrate. ,
By configuring the light leakage portion in accordance with the form to be advertised on the sheet-like light guide, it is possible to mass-produce display boards in which light guides are arranged in the form of a sheet at a factory, and each The light leakage portion is formed in the sheet light guide produced at the customer's factory as described above in accordance with the form to be advertised, thereby greatly increasing its versatility. In addition, the present invention forms a display board by arranging the light guide in a sheet form, thereby making the display board convenient and easy to install on the wall of a building, etc., and allowing the light source to be placed in any position. It also makes it easy to install and maintain and manage. FIG. 1 is a cross-sectional view for explaining the structure of a light guide (optical fiber) used in the present invention.
In the figure, 1 is a core, 2 is a cladding layer, 3 is a propagation direction of light propagating within the optical waveguide, and 4a, 4b, and 4c are light leakage parts.

Although one optical fiber is shown in FIG. 1, in the present invention, these optical fibers are folded over a sheet-like substrate and used in the form of a sheet, as will be described later.
In Fig. 1, the light propagated inside the light guide is leaked to the outside through light leakage parts 4a, 4b, 4c, etc. where the optical waveguide conditions are changed so that the light leaks to the outside, and is used as display light. However, for example, as shown in FIG. 1A, this light leakage portion may be formed by removing the cladding layer 2 at a portion where light is to be leaked and providing a recess 4a in the core.
As shown in FIG. 1B, a part of the cladding layer 2 is removed,
The light transmitting body 4b may be attached to this removed portion, but the shape of the light leakage portion is not limited to these, and it goes without saying that it can be configured arbitrarily. FIG. 2 is a configuration diagram for explaining one embodiment of the present invention. In this embodiment, one optical fiber 14 is folded and formed into a sheet shape on a sheet-shaped substrate 10, and this optical fiber In addition to forming a light leakage part in a desired shape, the color of the light incident on the optical fiber is changed by changing the color of the light source or by using a light filter to obtain an arbitrary display color. In the figure, 1
For example, 1 is a red light source, 11' is a blue light source, 11'' is a green light source, and 12, 12', 12'' are lenses, and one of these light sources with different colors is selected for the optical fiber 14. The light of the desired color is emitted from the light leakage portion of the optical fiber.

Therefore, according to this embodiment, a sheet-like display board is made by folding one optical fiber onto a sheet-like substrate to form a sheet-like sheet, so that the display board can be manufactured very easily. Since a light leakage portion is formed in the optical fiber of the sheet-like display board formed in this manner in any desired shape according to the form of the advertisement, the display is performed by forming the light leakage part in the optical fiber of the sheet-like display board formed in this way. It is now possible to mass produce
Furthermore, it is possible to form a light leakage part on the sheet-like display board produced in this way at the factory side according to the form of advertisement for each consumer, so it is highly versatile and,
An inexpensive display device can be provided. In addition, since it is only necessary to introduce light into one optical fiber, it is very easy to introduce light into the optical fiber, and installation work at the site is made very easy. Furthermore, the sheet-like display unit manufactured as described above is attached to the wall of a building, etc.
Since the light source section can be installed and used inside a building, the display section can be configured to be extremely lightweight, making installation work very easy, and since there are no damaged parts, maintenance is also very easy. becomes easier. Furthermore, since the light source section can be installed at a desired location within the building, there are advantages such as ease of installation, maintenance, and management. FIG. 3 is a configuration diagram showing another embodiment of the present invention, in which three optical fibers 4, 14', 14'' are formed in a sheet shape on a sheet-like substrate 10, and each optical fiber is displayed. In addition to making the forms of characters, symbols, etc. different, the color of the light introduced into each optical fiber is made different, so that the display form and its color are changed for each fiber.

FIG. 4 shows a plurality of optical fibers 14, 14', 14''.
... are arranged in a sheet shape on a sheet-like substrate 10, a light leakage part of a different form is formed for each optical fiber, and the twill light source 11 is moved, or the light source 11 and the lenses 12, 1 are connected.
A slit plate is provided between the optical fibers 2', 12'', . , in this example, for example lenses 12, 12'
, 12'', etc., or by moving this light filter, it is possible to display different colors for each display format. , 4th
This is a modification of the figure, in which the display section is different for each optical fiber. For example, depending on the optical fiber 14, the display section A, 1
4' constitutes the display part B, and 14'' constitutes the display part C. As in the case of FIG. 4, by moving the light source 11 or moving the slit plate, each display part A, B, Figure 6 shows an example in which the sheet-like substrate 10 is omitted by forming a cloth using optical fibers, and a certain form of display is displayed using the vertical optical fibers 14. , another form of display is provided by the lateral optical fiber 14'.

According to this embodiment, the display section can be constructed without using a substrate, so the display section can be made even lighter and the amount of displayed information can be increased. Furthermore, a larger amount of information can be displayed by using a plurality of vertical and/or horizontal optical fibers as shown in FIGS. 3 to 5. As is clear from the above description, according to the present invention, it is possible to provide a display device that is extremely versatile, lightweight, and easy to maintain and manage.

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[Brief explanation of drawings]

FIG. 1 is a partially enlarged sectional view for explaining the detailed structure of a light guide used in the present invention, and FIGS. 2 to 6 are configuration diagrams for explaining embodiments of the present invention. 10... sheet-like substrate, 11, 11', 11''...
...Light source, 12, 12', 12" ... Lens, 13 ... Fiber east, 14, 14', 14"
...Optical fiber. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Scope of Claims] 1. A light guide comprising a light guide and an optical system for inputting light into the light guide, the light guide having a light leakage part for leaking the light propagated within the light guide to the outside. in which the optical waveguide conditions are changed in a manner related to the information to be displayed in the light leakage portion, the light guide comprises at least one optical fiber, and the optical fiber is in the form of a sheet. A display device using a light guide, characterized in that it is formed in a folded sheet shape on a substrate. 2. A display device using a light guide according to claim 1, wherein the optical system is configured to introduce light of various different colors into the optical fiber. 3 comprising a light guide and an optical system for inputting light into the light guide, the light guide having a light leakage part for leaking the light propagated within the light guide to the outside; In a display device in which the optical waveguide conditions are changed in a manner in which the light leakage portion is related to the information to be displayed, the light guide includes a plurality of optical fibers arranged as a set in a folded sheet shape on a sheet-like substrate. A light guide characterized in that the light leakage portion is formed in a different shape for each optical fiber, and the color of the light introduced into each optical fiber is different. A display device using 4 comprising a light guide and an optical system for inputting light into the light guide, the light guide having a light leakage part for leaking the light propagated within the light guide to the outside; In a display device in which optical waveguide conditions are changed in a manner in which the light leakage portion is related to information to be displayed, the light guide includes a plurality of optical fibers arranged in a folded sheet shape on a sheet-like substrate; The light leakage portion is formed in a different shape for each optical fiber, and is configured such that light from a single optical system is sequentially introduced into each optical fiber. Display device using conductors. 5 comprising a light guide and an optical system for inputting light into the light guide, the light guide having a light leakage part for leaking the light propagated within the light guide to the outside; In the display device in which the optical waveguide conditions are changed in a manner in which the light leakage portion is related to the information to be displayed, the light guide is formed into a sheet shape by folding and weaving at least two optical fibers,
A display device using a light guide, characterized in that the shape of the light leakage portion is different for each optical fiber, and light is introduced into each optical fiber.