JPH0310546Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention is a display device that uses both sides as a display surface and is used for, for example, advertising signboards, decorative ornaments, etc., especially a type that uses fluorescent color to enhance the display effect. The present invention relates to a fluorescent display device.

Conventional technology and its problems Conventionally, the most common type of fluorescent display device uses paint mixed with fluorescent pigments to draw and form predetermined characters, designs, etc. on the display panel surface, and then removes ultraviolet rays. A device is known in which fluorescent light is generated in the display portion by irradiation (for example, Utility Model Application No. 156086/1986). However, since the display part of this conventional product is flat, even if it emits light, the display part can only be made to appear raised in appearance, and the three-dimensional effect is still lacking. Excellent entertainment based on changes in luminance could not be expected.

On the other hand, a display device in which a desired display pattern is formed as an optically discontinuous surface by forming grooves, cuts, etc. on one side of a transparent synthetic resin plate mixed with a fluorescent pigment (Utokoko 52- No. 30859)
has also been proposed. In this display device, the fluorescent light generated in the resin plate is scattered by the display pattern, making the display part appear to shine from the ground, but the display mode does not have a flat appearance. However, it was undeniable that it lacked a sense of three-dimensionality.

Purpose of the invention This invention was created in view of the above-mentioned conventional technology, by producing bright colors by generating fluorescence, by partially changing the luminance, and by providing a three-dimensional effect by the shape of the display member that forms display patterns such as characters. It is an object of the present invention to provide a double-sided display device with a simple structure that has excellent aesthetics and visibility due to the synergistic effect of this and the edge lighting effect.

Means for Achieving the Object This invention achieves the above object by forming the display member from a fluorescent transparent synthetic resin that is excited to emit light when irradiated with ultraviolet rays, and by arranging rod-shaped bodies of the resin in an upright manner. A display pattern such as a predetermined character or figure is formed on the screen, and ultraviolet rays are irradiated from the surrounding area.

That is, in the fluorescent display device according to the invention, a large number of display rod-shaped bodies of a predetermined length made of fluorescent transparent synthetic resin are erected in a predetermined arrangement on at least one side of a display substrate made of a transparent plate. A display pattern such as a predetermined character or figure is formed with the group of rod-shaped bodies, and the display rod can be observed from both sides of the substrate, and the surrounding area can be viewed from the side facing the group of rod-shaped bodies. It is characterized in that one or more ultraviolet lamps are arranged at appropriate positions.

Embodiments This invention will be described below with reference to illustrated embodiments.

In FIGS. 1 and 2, 1 is an outer box body, which is formed into a substantially rectangular shape from an opaque synthetic resin plate or a metal plate, and has a display window 2 of a required size in the middle part of both the front and back surfaces. , 2 are open.

Reference numeral 3 denotes a display board housed in the outer case 1 and hung vertically in an appropriately fixed state; 4 a display pattern such as letters and figures formed in a protruding state on one side of the display board; 5 a display board facing this display pattern; These are ultraviolet lamps arranged vertically and attached to the upper and lower surfaces of the outer box body 1, respectively.

The upper and lower display substrates 3 are formed of colorless transparent synthetic resin plates, and the display pattern 4 can be viewed from both sides through display windows 2, 2 on both sides of the outer case 1. However, the display substrate 3 may be a colored transparent plate.

The display pattern 4 is made by forming a group of rod-shaped bodies by arranging a large number of display rod-shaped bodies 6 made of fluorescent transparent synthetic resin and having a predetermined length, one end surface of which is adhesively fixed to the surface of the substrate 3, and erected in a predetermined arrangement. It is formed by representing predetermined characters, figures, etc. The above-mentioned fluorescent transparent synthetic resin used for this purpose is a transparent colored synthetic resin or polymer uniformly mixed with a fluorescent coloring material, particularly a fluorescent dye, or a fluorescent pigment that emits light when excited by ultraviolet irradiation. A display rod-shaped body 6 formed from a transparent colored polymer material having fluorescent properties in its molecular chains.
For example, if the display pattern 4 has a solid cylindrical shape as shown in the figure, in order to give a sense of depth to the display pattern 4,
It is preferable to use a material in which the length l is at least 3 times the diameter d, and it is particularly preferable to use a material in which the diameter d:length l is about 1:4 to 1:20. good. In the case of display devices for signboards, those having a diameter of 2 to 30 mm and a length of 40 to 120 mm are generally suitably used.

Examples of the transparent matrix resin used for the display rod include methyl methacrylic resin,
Suitable materials include styrene resin, vinyl chloride resin, polycarbonate resin, etc.
Examples of fluorescent coloring materials mixed in this include alcohol-soluble dyes or oil-soluble dyes such as rhodamine, auramine, eomine, flavin, phosphine, benzopyran, thioindigo, and heterocyclic dyes. Fluorescent materials such as oleate and stearate with fluorescent colors such as red, blue, green, and yellow can be preferably used.

The display rod-shaped body 6 in the illustrated embodiment has a cylindrical shape with both end faces perpendicular to the center line in the longitudinal direction, but one end face or both end faces are at a predetermined angle with respect to the center line. It is also permissible to use one formed on a diagonal surface. Accordingly, the rod-shaped bodies 6 may be arranged in an upright manner so as to be inclined at a predetermined angle with respect to the surface of the display substrate 3. Further, the rod-shaped body 4 is not limited to a cylindrical shape, but may have a rectangular, triangular, or other polygonal cross-section, as in the other modified solid type shown in FIG. As shown in Figure B, the cross-sectional shape may be hollow, or as shown in Figure C, protrusions or grooves may be formed along the axial direction on the outer circumferential surface and (and) the inner circumferential surface. A formed solid or hollow material with an irregular cross section may also be used. Alternatively, in order to produce a luminous effect due to the confusion of the fluorescent light in the intermediate portion in the length direction, and to make the display pattern 4 more varied,
One or more grooves may be formed on the circumferential surface. The groove is generally formed in a V-shape, U-shape, U-shape, etc. in cross section, but it may be formed in a simple cut.

In addition, it is preferable that the ultraviolet lamp 5 is arranged so as to be able to directly irradiate the entire group of rod-like bodies with ultraviolet rays at a position around the group of display rod-like bodies 6 forming the display pattern 4 so as not to be exposed through the display window 2. A plurality of rays are provided, and a type called black light is generally used, but any type of ray that can irradiate light rays rich in ultraviolet rays can be used.

In the display device according to the above embodiment, when the ultraviolet lamps 5, 5 are turned on, the fluorescent substance in the display rod-shaped body 6 is excited by the action of the ultraviolet rays irradiated, particularly in the effective wavelength range of 300 to 400 nm, and the rod-shaped body 6 Generates fluorescence within the body. This fluorescent light causes the entire display rod-shaped body 6 to develop a bright fluorescent color such as red, green, or yellow, making the display pattern 4 stand out, and at the same time, due to a kind of edge lighting effect,
The light is scattered to the outside from the end face of the display rod-shaped body 6, that is, the left and right end faces in FIG.
Make the image clear. Therefore, the rod-shaped body 6
The display pattern 4 formed by the arrangement of the rods exhibits a fluorescent color luminescent state as a whole, but has a unique external shape due to the row of rod-shaped bodies and an even stronger light scattered from the end surface. By brilliance,
It is observed as being three-dimensional, aesthetically pleasing, and highly interesting. Since the display substrate 3 is made of a transparent plate, the appearance of the display pattern 4 can be observed from both the front and back sides of the display substrate 3, making it suitable as a double-sided signboard. It can be used for.

Effects of the invention This invention is based on the above. First, the display pattern is formed by an array of rod-shaped bodies made of fluorescent transparent synthetic resin that emit fluorescence when irradiated with ultraviolet rays. By being equipped with an ultraviolet lamp that performs the In addition to expressing this, the display pattern itself is formed by an arrangement of the rod-like bodies erected on the surface of the transparent substrate. In addition, the fluorescent light generated within the display rod-shaped body shines particularly strongly at its end face, emphasizing the specific shape of the display pattern at a position away from the display substrate surface. The shape can be observed from both sides of the substrate. For this reason, the display pattern becomes a three-dimensional object whose appearance changes depending on the viewing angle, and where the brightness changes partially, resulting in an extremely beautiful appearance from both the front and back sides. It is possible to provide a display device with excellent visibility and interest, which is suitable for applications such as the following.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a perspective view with a part of the outer box cut away, Fig. 2 is a cross-sectional view along the line shown in Fig. 1, and Fig. 3 is a bar-shaped display. FIG. 7 is a cross-sectional view showing various modifications of the body. DESCRIPTION OF SYMBOLS 1... Outer box body, 3... Display board, 4... Display pattern, 5... Ultraviolet lamp, 6... Display rod-shaped body.

Claims (1)

[Scope of utility model registration request] On at least one side of the display substrate made of a transparent plate,
By erecting a large number of display rods of a predetermined length made of fluorescent transparent synthetic resin in a predetermined arrangement, a display pattern of predetermined characters, figures, etc. is formed by the group of rods. The fluorescent rods can be observed from both sides of the substrate, and one or more ultraviolet lamps are arranged at appropriate positions facing and around the group of rods. Display device.