JPH0953213A - Spontaneous emission type sign - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve visibility by preventing the deterioration of luminance due to irregular reflection regarding a spontaneous emission type sign such as a traffic sign, a guide sign, etc., using electroluminescence (hereinafter called EL). SOLUTION: EL 21 is buried into a light-transmitting synthetic resin 22 by casting to form a light-emitting panel 2, and the surface of the light-emitting panel 2 is used as a display surface 23. Accordingly, the light L of the EL 21 is not reflected irregularly and is transmitted through the light-transmitting synthetic resin 22 and is emitted from the display surface 23 as it is because there is no room of the generation of space, etc., between a display board and the EL 21 generated when the display board and the EL 21 are formed of separate bodies as conventional devices, the luminance of the display surface 23 is not lowered, and reaches approximately the same extent as the original luminance of El 21 itself, and visibility is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-luminous sign such as a road sign or a guide sign using electroluminescence, and more particularly to a self-luminous sign with improved visibility.

[0002]

2. Description of the Related Art Conventionally, as a self-luminous marker using electroluminescence (hereinafter referred to as EL), for example, as described in Japanese Utility Model Publication No. 62-44911.
A road sign has been proposed in which an EL is arranged in close contact with the back surface of a translucent sign board having a sign on its surface, and the EL is used as a light source for a backlight of the sign board. Thus E
The self-luminous sign with a transparent signboard on the front of L is
Although EL is inherently weak to ultraviolet rays, especially sunlight, it is excellent in that it prevents the deterioration of EL by absorbing or blocking the ultraviolet rays by the translucent marking plate.

[0003]

However, when the EL is arranged on the back surface of the translucent sign board as described above, its E
As shown in FIG. 9 (A), the mounting method of L is generally performed by sticking the outer peripheral edge of ELc to the back surface of the marking plate b having the marking a on its surface with a film d or the like. In such a mounting method, a slight gap e is formed between the marking plate b and ELc, and therefore, as shown in FIG.
The light f emitted from the display board diffusely reflects in the gap e between the sign board b and ELc, and the diffuse reflection attenuates the light f emitted from the sign board b, so that the brightness of the sign board b is originally the brightness that ELc itself has. It became lower, which was an obstacle to visibility.

A film d for adhering the outer peripheral edge of ELc
In some cases, the gap e between the marking plate b and the ELc becomes larger due to the deterioration or peeling of the ELc due to the passage of time, and the ELc may be peeled off. Since the ELc, which is inferior in property, is directly attached to the marking plate b, the ELc itself may be deteriorated due to the influence of moisture in the atmosphere.

In view of the above problems, a self-luminous sign is also provided in which an EL is embedded in a translucent synthetic resin to form a light-emitting panel, and the light-emitting panel is arranged on the back surface of a translucent sign board having markings on the surface. Proposed. Such a self-luminous sign not only absorbs or blocks ultraviolet rays by the sign board and the translucent synthetic resin, but also does not directly touch the atmosphere with the translucent synthetic resin. Although excellent in that deterioration is also prevented, since the light-emitting panel and the signboard are configured separately, a gap is inevitably formed between the light-emitting panel and the signboard. The light emitted from the EL in the gap also causes diffuse reflection, and the diffuse reflection attenuates the light emitted from the sign board, resulting in a decrease in brightness.

Therefore, the present invention solves the above problems,
It is an object of the present invention to provide a self-luminous sign having improved visibility by preventing a decrease in brightness due to diffused reflection.

[0007]

In order to achieve the above object, the present invention has the following arrangement. That is, the self-luminous sign according to the present invention is characterized in that electroluminescence is embedded in a translucent synthetic resin by casting to form a light-emitting panel, and the surface of the light-emitting panel serves as a marking surface. .

[0008]

Next, an embodiment of the present invention will be specifically described with reference to the drawings. That is, FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a sectional view of FIG. 1, FIG. 3 is an enlarged sectional view of a main portion of FIG. 1, and FIG. 4 is a main portion of another embodiment. 7 is an enlarged cross-sectional view showing a still another embodiment of the present invention, FIG. 6 is a cross-sectional view of FIG. 5, and FIG.
FIG. 8 is an enlarged cross-sectional view of the main part of FIG. 5, and FIG. 8 is a perspective view showing a light emitting panel used in still another embodiment.

In the embodiment shown in FIGS. 1 to 3, a light emitting panel 2 is attached to the front side of a frame body 1 assembled in a substantially inverted triangular shape, and a back plate 3 is attached to the back side thereof. In the above, the EL 21 is formed by being embedded in the translucent synthetic resin 22 by casting, and the surface of the light emitting panel 2 is the marking surface 23.

By casting in this way, the EL21
Is embedded in the translucent synthetic resin 22 to form the light-emitting panel 2 and the surface of the light-emitting panel 2 is used as the marking surface 23, so that the marking generated when the marking plate and the EL are separately formed as in the conventional case. There is no room for a gap between the plate and EL,
Therefore, as shown in FIG. 3, the light L of the EL 21 is not diffusely reflected and is transmitted through the translucent synthetic resin 22 and is directly displayed on the marking surface 23.
Since the light is emitted from the display surface 23, the brightness of the marking surface 23 does not decrease, and the brightness is substantially the same as that of the EL 21 itself, and the visibility is improved.

In the above-described embodiment, the frame 1 is generally an L-shaped front frame piece 11 made of metal such as aluminum alloy or synthetic resin, and mounting ribs 12 on the front side and the rear side, respectively.
13 and an upright side frame piece 14, a plurality of side frame pieces 14 are combined to be assembled into a substantially inverted triangular shape as shown in the drawing, and the front frame piece 11 is provided on the front side of the side frame piece 14. Mounting ribs 1 on the front side of the side frame piece 14 that are mounted by screws 15.
The outer peripheral edge of the light emitting panel 2 is sandwiched between 2 and the front frame piece 11, and the back plate 3 is attached to the attachment rib 13 on the back side of the one side frame piece 14 with the screw 15. Although a metal plate such as an aluminum alloy is generally used as the back plate 3,
It may be a synthetic resin plate.

As the EL 21, all conventionally known ones such as a thin film phosphor sandwiched between dielectric insulating layers, or a powder phosphor dispersed in a dielectric binder can be used. Further, as the translucent synthetic resin 22 for forming the light emitting panel 2 by embedding and casting the EL 21 therein, a transparent acrylic resin, a transparent polycarbonate, a methacrylic resin, or any other transparent or translucent synthetic resin is particularly limited. Not EL
From the viewpoint of embedding 21 and casting, and effectively emitting the cast EL 21 light without attenuating, acrylic resin excellent in transparency and moldability is preferably used.

There is no particular limitation on the power supply, the control device, etc. until the charge is applied to the EL 21.
In addition to a commercial power source, a dry cell, a solar cell, a storage battery, or a combination thereof, or another DC power source may be used. Further, in the light emitting panel 2, in the present embodiment, the portion in which the EL 21 is embedded is thick and the other portion in which the EL 21 is not embedded is thin, but as shown in FIG. The part may have the same thickness.

As described above, the surface of the light emitting panel 2 is the marking surface 23, and the marking surface 23 is directly printed with the marking 24 such as "Tomare", characters, symbols, or designs in this embodiment. The indicator 24 is illuminated from the back side by using the light of the EL 21 of No. 2 as a backlight. The marking 24 may be provided by directly pasting a printed marking sheet or the like on the marking surface 23, and the marking surface 23 itself is not marked, and the shape of the EL 21 itself is marked with letters, symbols, patterns, or the like. May be formed so that the EL 21 emits light so that the marking according to the shape of the EL 21 is visually recognized through the marking surface 23. In this way, when the surface of the light emitting panel 2 is used as the marking surface 23, the surface of the light emitting panel 2 is arranged by, for example, arranging on the front surface of the light emitting panel 2 a marking plate such as a marking plate which causes a diffused reflection. It means that the surface itself of the light emitting panel 2 is the marking surface 23, not the marking surface.

Next, in the embodiment shown in FIGS. 5 to 7, the marking surface 23 on the surface of the light emitting panel 2 having the above-described structure is
Further, a metal plate 4 is arranged, and at least a part of the metal plate 4 facing the EL 21 is hollowed to form a hollow marking 41, and the hollow marking 41 indicates characters, symbols, patterns, and the like. .

In this way, the marking surface 2 on the surface of the light emitting panel 2
By arranging the metal plate 4 on which the hollowed-out marking 41 by hollowing is formed, the EL 21 as shown in FIG.
Light L passes through the translucent synthetic resin 22 without being irregularly reflected, and is emitted from the marking surface 23 as it is, and is further emitted only from the cut-out marking 41 on the front side.
Since the light L is blocked in other portions, the hollow marking 41 is just visible and visible, and the brightness of the light L emitted from the hollow marking 41 does not decrease, and the brightness originally possessed by the EL 21 itself. The visibility is improved by the same degree as above. Moreover, by the metal plate 4,
Even if a vehicle or the like collides, the light emitting panel 2 is not broken and scattered, and the risk of a secondary disaster is eliminated.

The metal plate 4 is not particularly limited and may be a stainless plate or the like, but an aluminum alloy plate is preferable in consideration of economy, and a reflection sheet is provided on a portion other than the cut-out marking 41. It is preferable that the retroreflective material 42 as described above is attached. Further, in this embodiment, the marking surface 23 of the light emitting panel 2 is flat,
As shown in FIG. 8, on the marking surface 23 of the light-emitting panel 2, a convex marking 25 having a shape corresponding to the hollow marking 41 of the metal plate 4 is projected, and the convex marking 25 is fitted into the hollow marking 41. The marking 25 and the metal plate 4 are flush with each other, which is easy to see and is also preferable in appearance. In this embodiment, EL2
Since the light emitting panel 2 in which 1 is embedded in almost the entire area is used, the hollowed-out marking 41 of the metal plate 4 is formed over almost the entire area of the light emitting panel 2, but the EL 21 is partially embedded. The light emitting panel 2 may be used,
In this case, the position of the hollow marking 41 on the metal plate 4 is EL.
It is formed in the portion facing 21.

In the embodiment shown in FIGS.
3, the front frame piece 11 is attached to the front side of the side frame piece 14 with screws 15 as shown in FIG. 6, and the mounting ribs 12 on the front side of the side frame piece 14 and the front frame piece 11 are connected to each other. The outer peripheral edge of the metal plate 4 is sandwiched between the metal plates 4, the light emitting panel 2 is closely attached to the back surface of the metal plate 4, and the back plate 3 is attached to the mounting rib 13 on the back surface side of the side frame piece 14 by the screw 15. Installed.

[0019]

According to the present invention, the marking plate and the E
There is no room for a gap between the marking plate and EL, which occurs when L is formed as a separate body, and therefore the EL light passes through the translucent synthetic resin without diffuse reflection and is emitted from the marking surface as it is. Therefore, the brightness of the marking surface does not decrease, and the brightness is substantially the same as that of the EL itself, and the visibility is improved.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a sectional view of FIG.

FIG. 3 is an enlarged sectional view of a main part of FIG.

FIG. 4 is an enlarged sectional view showing a main part of another embodiment of the present invention.

FIG. 5 is a front view showing still another embodiment of the present invention.

FIG. 6 is a sectional view of FIG. 5;

7 is an enlarged cross-sectional view of the main part of FIG.

FIG. 8 is a perspective view showing a light emitting panel used in still another embodiment of the present invention.

FIG. 9 shows a main part of a conventional self-luminous sign, (A) is a sectional view thereof, and (B) is an enlarged sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 11 Front frame piece 12 Mounting rib 13 Mounting rib 14 Side frame piece 15 Screw 2 Light emitting panel 21 Electroluminescence (EL) 22 Translucent synthetic resin 23 Marking surface 24 Marking 25 Convex marking 3 Back plate 4 Metal plate 41 Hollowed-out marking 42 Retroreflective material

Claims (4)

[Claims] 1. A self-luminous sign, wherein electroluminescence is embedded in a translucent synthetic resin by casting to form a light emitting panel, and the surface of the light emitting panel serves as a marking surface. 2. The self-luminous sign according to claim 1, wherein markings such as characters, symbols, and designs are directly applied to the marking surface. 3. The electroluminescence shape is a shape representing a marking such as letters, symbols, and patterns, and the electroluminescence shape is made visible by the emission of the electroluminescence. The self-luminous marker according to claim 1, wherein 4. A metal plate is arranged on the front surface of the marking surface, and at least a part of the metal plate facing the electroluminescence is hollowed to form a hollow marking, and characters, symbols, patterns, etc. are marked by the hollow marking. The self-luminous label according to claim 1, wherein the self-luminous label is provided.