DE202011001774U1 - Leuchtbild - Google Patents

Abstract

Illuminated image, characterized in that it consists of at least one image plate, which images the scene to be displayed, and a rear transparent plate (light plate) on which the image plate is arranged, wherein the light plate is designed so that it covers at least the image plate, and wherein the image plate and / or the light plate have recesses or erosions, wherein at least one of the recesses is created so that it transmits less or more light than other recesses.

Description

The invention relates to a light image.

There are various lighting images in the trade, which cause a special effect by means of a light source and a backlit image of them when they are viewed. These are mostly murals, such as posters, art prints or photographs whose special decorative design is that a picture carrier is used with backlight.

An example is a luminous image according to DE 103 56 721 which, when illuminated from the front, displays a day image and, when illuminated from behind, a night image of the objects shown in the picture. For this purpose, the day image is printed on the front of a translucent image carrier and on the back of the image carrier a matching to the contours of the day image shading image, which covers the dark night appearing objects opaque and leaves the appearing on the night image bright objects completely or partially.

Another example is luminous images according to DE 299 10 235 comprising an array of individual picture element-oriented luminous elements on the image carrier to emphasize those areas of the image. These lighting elements may be active lights or backlit translucent recesses in the image carrier.

Disadvantage of the previous photos is that the variability of the transmitted light intensity through the image in relation to the backlight is not very large. On the one hand, the intensity consists of the light transmitted through the image itself, on the other hand, of the light that falls through the recesses. There are no other gradations. It is not possible to achieve a large variation of the light transmitted through the holes.

This creates the impression of a backlit image, which has significant holes in a viewer. It is not possible to produce a luminous image in which z. B. points of light, which have an additional brightness through holes for the viewer to represent harmoniously as part of the image, or to light points that are realized by holes of the same size to shine with different intensity.

The object of the invention is to overcome the existing disadvantages and to provide a light image available in which the variation of the transmitted light power is large enough to evoke the impression of a real scene in a viewer, and in particular even the same size lighting areas with constant backlight to shine with varying intensity.

This object is solved by the present invention according to the claims.

Thereafter, the luminous image consists of at least one image plate, which images the scene to be displayed, and a rear transparent plate (light plate), on which the image plate is arranged. In this case, the light plate is designed so that it covers at least the image plate. Preferably, the luminous image additionally includes a front transparent panel (front panel) arranged so that the image panel is sandwiched between the front panel and the light panel. Preferably, the front panel is designed so that it covers at least the image plate.

The special effect of the light image is achieved in that recesses or erosions are introduced into the image plate and / or the light plate. When illuminated from behind on the light plate in this way, the areas of the recesses are seen lighter than the areas without the recesses.

The image plate is usually made of a solid substrate to which a motif has been applied. Preferably, the motif was printed or painted. This support material is preferably permeable to light or at least penetrable.

Preferred support materials are paper, cardboard, gelatin, plastic or glass.

The thickness of the image plate is in the range between 0.01 mm and 10 mm, preferably between 0.5 mm and 2 mm.

Preferred examples of optical disks are photographs or prints on plastic or paper.

The front transparent panel (front panel) has the primary task to protect the light image against dirt and mechanical effects without adversely affecting the lighting effect. For this reason, it is advantageous if the front panel has the lowest possible absorption for the illuminating light.

The front panel is preferably made of a transparent material, in particular a hard material, preferably harder than 4 Mohs, in particular harder than 5 Mohs. Preferred materials for the front panel are glass or plastics, in particular Plexiglas or acrylic glass. Glass has the advantage that care and cleaning of the front panel are unproblematic.

In a preferred embodiment, the front panel is made of float glass. This has the advantage that the light is additionally sharpened and optically bundled by this material, which positively influences the effect of the illuminated image. The glass may have a slight green core. This dampens the reflections, especially in glossy photographs.

The rear transparent plate (light plate) serves for a stable attachment of the image plate, on the other hand, but also the optical effect of the light image. This plate preferably absorbs a part of the from behind, d. H. from the side facing away from the image plate, through light passing through them, preferably more than 20%, in particular more than 50%, but not the entire light output. Preferably, at least 30% of the incoming light from the rear is transmitted. This can be z. B. by a certain proportion of white of the light plate, z. B. 55% can be achieved.

Preferred materials for the light plate are glass or plastics, in particular Plexiglas or acrylic glass. With a view to easy processing of the light plate while plastic, especially Plexiglas or acrylic glass, particularly preferred, with plexiglass is advantageous because of its brilliance.

The light plate preferably has a thickness between 0.5 and 50 mm, in particular a thickness between 1 and 5 mm.

The recesses are any types of weakening of the thickness of the image plate and / or the light plate. Hereinafter, these recesses will be referred to as 'holes' for better understanding. However, this should also include the case that these recesses can be introduced in other ways, preferably by milling, etching, carving or grinding.

The recesses have walls that are generally parallel, but can also assume an angle> 0 ° and <180 ° to each other. In particular, in holes, but also in other methods, these walls can be parallel to one part and to another at an angle to each other. For drilling, this is at the point angle of the drill. This angle is preferably between 60 ° and 179 °, in particular between 110 ° and 160 °.

The base of the recesses (eg end of a blind hole) may be flat or have the above-mentioned angles.

Each of these recesses can be assigned to a central axis. In recesses with parallel walls, this runs parallel to these walls. In the case of recesses with walls which are at an angle to one another, the central axis which is referred to in the present application is the angle bisector.

For example, in a normal blind bore, the central axis would be parallel to the walls of the borehole, which would correspond to an angle bisector of the angle at the end of the blind hole.

In a further preferred embodiment, a bore is mounted at least in the image plate, but preferably also extends into the light plate. Through the different depths of the holes can control how much light to penetrate through the light image at this point. In particular, in the case that the light plate absorbs a part of the incoming light from behind, so that the intensity of each light spot relative to the overall illumination of the image is precisely adjustable.

The diameter of each recess is initially arbitrary. However, as a rule, the motif on the image plate dictates how large the recess should be. For example, if the effect of a luminous solar disk is to be generated, the recess must extend over the entire surface of the illustrated sun. In contrast, if only one point of light of a small lamp is to be displayed, a small recess in the form of the lamp shown is sufficient.

With the same size and cross-sectional area of two recesses, a difference in intensity can be achieved by the above-described differences in the depth of the recesses.

An advantageous effect is achieved if at least one recess or at least a subset of the recesses is designed such that light incident from behind will pass through in such a way that the maximum intensity is not perceived by a viewer when this viewer is orthogonal to the image plate directly from above the recess looks but along a straight line which is inclined to the image plate, and / or the light is not straight from the light source through these recesses but is deflected by optical elements.

On the one hand, it achieves the effect that, in reality, the illuminations of the image motif enhanced by recesses do not always emit their maximum intensity in the direct direction of the image's capture. On the other hand, however, that from different perspectives illuminations of different recesses dominate what a gives special dynamics when viewing the image.

Finally, this is also necessary means to a non-planar backlight of the light image, such as LEDs or bulbs (see also 3 ), yet to let an optimum intensity of the illumination pass through the recess.

In the latter case, it is advantageous if the light of the backlight falls vertically through the recess. This means that the recess is directed directly at the backlight and / or the beam path of the light is correspondingly changed by optical elements such as mirrors, prisms or lenses.

In a preferred embodiment, the central axis of at least one recess is inclined relative to the plane of the image plate. In particular, in this case, the central axis has a minimum angle between 1 ° and 89 °, more preferably between 30 ° and 80 °.

By this inclination of the central axis of the recess, the intensity of the transmitted light is adjustable. In particular, when the light image is illuminated by a light source, which does not homogeneously illuminate the background of the image in the full surface, but consists of luminous bodies which are smaller than the total area of the light image, for example lamps or LEDs, gives a particularly brilliant light effect of a recess which is farther away from the light sources when the center axis of this recess is inclined to the image plate so as to point directly at the light source.

In a further preferred embodiment, a transparent adhesive layer is applied between the image plate and the light plate. This serves for fastening and thus also for locking the image plate to the light plate. These two plates can thus no longer be moved relative to each other. A shift would adversely affect introduced recesses. In addition, a corrugation of the same is prevented in particular with thin optical disks.

The adhesive layer preferably consists of an adhesive or of an adhesive tape, wherein the adhesive layer is transparent at least for one of the frequencies of the illumination. Thus, the adhesive layer may be transparent colored or transparent white.

In a preferred embodiment, the adhesive layer consists of at least two areas, each having a different color. In this way, it is possible to emphasize areas of the image plate, in particular recesses, which are present only in the image plate in color.

In a further preferred embodiment, areas on the back of the light plate, which corresponds to the side facing away from the image plate, dyed.

Dyeing is preferably achieved with a paint, a varnish or a colored plastic plate or layer. In this way, it is possible to highlight even recesses that lead through both the image plate and in the light plate, colored. This can be used to create the impression of colorful lights for a viewer.

In a preferred embodiment, the illumination is generated passively by placing the image in front of an external light source, for example a room lamp or the sun.

In a further preferred embodiment, a light source is fixedly arranged behind the light plate and part of the light image.

Preferred light sources are lamps, in particular from the group of LEDs, OLEDs, neon tubes, halogen lamps and energy-saving lamps.

In particular, surface-mounted lights, in particular OLEDs, have the advantage that they can ensure a homogeneous illumination of the light image over its entire surface.

In a particular embodiment, a frame in which all other necessary parts are arranged, part of the light image. This frame preferably also includes a rear wall in addition to supporting side parts.

This rear wall is preferably coated on the inside, the light plate facing side, white or reflective.

In particular, in the case that an internal light source is used, the rear wall in the region of the light sources is designed to be reflective, in particular there is a chromium-colored foil, which optically amplifies the light forward again and thus produces a flood light.

In a particular embodiment of a recess whose bottom is curved, in particular convex or concave with a uniform curvature. Preferably located on the back of the light plate in extension of the central axis of this recess also has a convex or concave curvature, in particular with a uniform curvature. In this way, the bottom of the recess acts as an optical lens and the passing light is refracted by this lens according to the laws of refraction.

In this way, special lighting effects can be achieved. In addition, with such optical elements also light rays can be so distracting that not necessarily an inclination of the central axis of the recess is necessary to guide the light of the light source optimally through the recess, even if the recess is relatively far away from the light source.

In another embodiment of a recess, the bottom of the recess is inclined relative to the plane of the image plate. Preferably located on the back of the light plate in the extension of the central axis of this recess also a zone in which the material of the light plate was removed so that even there the ground is inclined relative to the plane of the optical disc. In this way, the material of the light plate acts as a prism at this point and the light of the light source is broken and decomposed into its spectral colors. Thus, the effect can be generated that, for. As with white lighting, a light spot on this image is iridescent at different viewing angles in different colors visible.

In addition, with such optical elements, light beams can be deflected in such a way that an inclination of the center axis of the recess is not necessarily necessary to optimally guide the light of the light source through the recess, even if the recess is relatively far away from the light source.

Examples of the system according to the invention are shown in the figures.

1 schematically shows the structure of a luminous image according to the invention.

2 shows a selection of possible recesses in the luminous image.

3 shows a possible arrangement of the light sources.

The light picture after 1 consists of the front panel ( 1 ), the image plate ( 2 ), for example a photo or an art print, and the light plate ( 3 ), here the image plate and the light plate with the transparent adhesive layer ( 4 ) are interconnected.

The front panel is preferably made of glass. In particular, if float glass is used, the light transmitted through the light image is additionally sharpened and optically bundled.

The arrangement is not passed through passively by light, but has its own light source, which in the frame ( 5 ) is housed. The light source here consists, for example, of energy-saving lamps ( 6 ) mounted on the inside of the rear wall and placed on a pedestal, with any ballasts ( 7 ) can be attached, for. B. transformers for halogen chandeliers or receivers for a radio switch. The supply line ( 10 ) to the light source preferably passes through the back wall or, as shown here, through the bottom of the frame; usually is secured with a train lock. In general, the implementation should be appropriate where it is the least noticeable after the attachment of the light image. For this purpose, the frame could have different zones with predetermined breaking points at which easy feedthroughs can be created.

The distance of the energy-saving lamps is here preferably 40 mm. This ensures that the outer area is still adequately illuminated, even with larger illuminated images.

The back wall of the frame ( 8th ) is preferably coated white and in the interior at least partially reflective. In the area of the light sources there is additionally a chromium-colored foil ( 9 ) which optically amplify the light to the front, thus creating a floodlight.

In order to hang up the illuminated picture, you will find on the back of the picture frame ( 5 respectively. 8th ) Hanger ( 11 ).

In the front structure clearly a hole (L) can be seen, through which light from the light source only slightly attenuated by the light plate can pass through the light image. The hole is tilted so that it points directly to the light source, thus the light from the light source is not unnecessarily attenuated and exits at an angle not equal to 90% to the image plate.

This achieves a special effect when viewing the image. On the one hand, the maximum perceptible by this hole light is very intense, compared with a hole orthogonal to the image plate at this point, on the other hand, the maximum intensity is only when you look at the light image at a certain angle. This improves the liveliness of the depicted motif.

In 2 are different recesses in the form of holes in the illuminated image shown. From bottom to top, these are two identical holes that are only in the image plate ( 2 ) are present, a hole which the image plate penetrates, two holes through the image plate through different deep into the light plate ( 3 ), two holes at different angles and at the top two holes with different completion of the blind hole.

In 3 schematically illustrates a possible arrangement of halogen lamps as two internal light sources ( 6 ) with a transformer ( 7 ) and supply lines ( 10 ).

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10356721 [0003]
• DE 29910235 [0004]

Claims (9)

Illuminated image, characterized in that it consists of at least one image plate, which images the scene to be displayed, and a rear transparent plate (light plate) on which the image plate is arranged, wherein the light plate is designed so that it covers at least the image plate, and wherein the image plate and / or the light plate have recesses or erosions, wherein at least one of the recesses is created so that it transmits less or more light than other recesses. Luminous image according to claim 1, characterized in that the luminous image additionally comprises a front transparent plate (front panel), which is arranged so that the image plate between the front panel and the light plate is located. Luminous image according to one of the preceding claims, characterized in that the front panel is made of a transparent material, in particular a hard material, preferably harder than 4 Mohs, in particular harder than 5 Mohs, preferably glass or plastics, in particular float glass, Plexiglas or acrylic glass, and in that the light plate absorbs a part of the light passing through from behind, preferably transmits more than 20%, in particular more than 50%, but preferably at least 30% of the light from behind, and preferably consists of Plexiglas or acrylic glass. Luminous image according to one of the preceding claims, characterized in that at least one recess is designed so that it transmits light incident from behind so much that the maximum intensity is not perceived by a viewer, if this viewer directly from above orthogonal to the image plate on the recess looks but along a straight line which is inclined to the image plate, and / or the light is not rectilinearly from the light source through the recess but is deflected by optical elements, in particular that the central axis of at least one recess is inclined relative to the plane of the image plate, and in particular a minimum angle between 1 ° and 89 °, more preferably between 30 ° and 80 °, relative to the image plate, wherein preferably the central axis of this recess is inclined to the image plate so that it points directly to the illuminating light source. Luminous image according to one of the preceding claims, characterized in that between the image plate and light plate, a transparent adhesive layer is attached, which preferably consists of an adhesive or of an adhesive tape, wherein the adhesive layer is transparent at least for one of the frequencies of illumination. Illuminated image according to one of the preceding claims, characterized in that areas are colored on the back of the light plate, preferably with a paint, a lacquer or a colored plastic plate or layer. Illuminated image according to one of the preceding claims, characterized in that a light source is fixed behind the light plate and part of the light image, wherein the light sources are preferably elements from the group of LEDs, OLEDs, neon lights, halogen lamps and energy-saving lamps, preferably flat running lights. Illuminated image according to one of the preceding claims, characterized in that the luminous image has a frame, which in addition to supporting side parts preferably also consists of a rear wall, said rear wall is preferably coated on its inside white or reflective and in particular in the region of the light sources in addition a chrome-colored Foil has. Luminous image according to one of the preceding claims, characterized in that the bottom of at least one recess is curved, in particular convex or concave with a uniform curvature, and preferably on the back of the light plate in extension of the central axis of this recess is also a convex or concave curvature, and / or the bottom of at least one recess is inclined relative to the plane of the image plate, and preferably on the back of the light plate in extension of the central axis of this recess is also a zone in which the material of the light plate has been removed so that even there Bottom is inclined relative to the plane of the image plate.

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