WO1998000672A1

WO1998000672A1 - Multiflex surface-illuminating system (mf)

Info

Publication number: WO1998000672A1
Application number: PCT/DE1997/001190
Authority: WO
Inventors: Jan Hess
Original assignee: Jan Hess
Priority date: 1996-07-01
Filing date: 1997-06-12
Publication date: 1998-01-08
Also published as: DE19626315A1

Abstract

The invention relates to the production of lighting bodies intended for surface lighting as used in illuminated advertising for illuminated traffic signs and elsewhere. Unlike current methods of surface lighting in which selective or elongated light sources (10) are mounted behind the lighting surface, rays of light are passed over the entire area (5) of a surface to be illuminated in an even manner using a more complicated ray course in the lighting body. Said design involves the use of flat illuminated bodies. The principle behind the illuminated bodies of the multiflex surface lighting system is that a very intensive, sharply directed beam (or a plurality thereof) is passed into the cavity of two parallel opposing plates (1, 2) which are the main reflex plate (2) and a transparent cover plate (1) and can portray a very wide range of contours (letters etc.). They are connected by the side surface (3) which surrounds completely at the sides thereof, said side surface having a mirror coating on the inside which opposes and is also aligned precisely with respect to manufacture. The sharply directed light beam fanned out at an angle parallel to the illuminated body strikes thereon, and is projected to and fro a plurality of times between the side surfaces (3). The light consequently increasingly sweeps the entire surface before it finally strikes the main reflex plate (2) as a result of the deflection advancing as the distance increases, to be emitted externally through the transparent cover plate (1) by said plate.

Description

description

Multireflex surface lighting system (MF).

It corresponds to the previous and customary state of the art luminous surfaces, such as the letters of a neon lettering, luminous banners, light boxes, illuminated fascia tapes, among other things in the field of neon signs, as well as traffic, information and signage, etc., and so into the light to be set, on the one hand to illuminate them with spotlights from the outside or to attach the light source (s) inside or behind the surface to be illuminated or contour. The latter always arises

• 10 the same basic problem. Because to this day, no two-dimensional, areal stronger light source is known. stretched electr. strong light sources available. This has several disadvantages. -To achieve an adequate, uniform illumination of a surface

45 it is necessary to place the light source (s) at a relatively large distance behind it. The result is an unsightly depth of neon signs, neon sign boxes, etc. - The financial aspect. More complicated structures such as

XV ben etc. are illuminated by manually manufactured high-voltage tubes which are shaped to the contours - their manufacture is complex and expensive. expensive. A large number of transformers are often added. In addition, the housing is also manufactured by hand. Furthermore, the large number of lamps

XS (low voltage fluorescent tubes) in light boxes, among other things, maintenance measures relatively common (lamp failures). Despite the effort involved, the quality of the illumination is often inadequate and the light sources are clearly visible on the illuminated surface. The Multireflex area lighting system (MF) has now been developed with the aim of offering an alternative to the conventional technology of area lighting with its described defects. Its appeal is said to be from the points

5 -flat, elegant construction -expensive manufacturing -complex application field and largely maintenance-free. As the name suggests »the MF is not a self-contained individual object, but rather a system, a program of building blocks and the like. Elements, each of which is available in a number of different sizes. You should choose a manufacturer e.g. enable neon signs to put everyone in

ΛS the question of the lighting surfaces to be implemented, from the transparent plug-out (Fig. 5) to the illuminated lettering (Fig.) On their basis. The two plates (lu.2 in Fig.2) form an integral part of most MF lamps. This is the transparent top facing the viewer

2.0 each lamp (LK) made of acrylic or the like (l ^ as well as the always the same shape always on the back of the LK main reflex plate (2). It directs all light through the plate (l) to the outside. The manufacturing technology requires that both plates are of identical dimensions (e.g. laser

\ S cut). These are connected to the surface (3) on the side surface formed by both, which completely surrounds them. It is reflective on the inside and is made of a material that can be easily adapted to the respective contour, but still according to the insoluble one

30 connection (gluing, welding or similar) with the two plates (lu.2) is so stable that it gives the LK extensive compactness and resistance to torsion. One of the basic requirements for the function of the MF is the precision in the processing of this mirror side surface (3).

S5 When automating production, it must be ensured that these surfaces are sufficiently parallel. Another condition for the function of the MF is the form of light input into the LK. In principle, this happens through one or more cutouts corresponding to the light beam cross-section - in the case of illuminated letters, primarily on the back -

5 pages. The light must be bundled as follows: In the dimension perpendicular to the reflection surface of the plate (2), the beam path should run parallel to the optical axis (Fig. 2). A fanning out in this direction is therefore undesirable. On the other hand, in the dimension parallel to the reflection, u. ° There is a relatively large scatter of light in the filament surface (Fig. Lu .5). The ideal case would therefore be if the light beam were shown as a sharply delimited bar with the same thickness as on the surface at the light exit opening. Of course, this can only be achieved with the help of an optically high-quality light source. (Fig.2) shows a light input element (LE) - here in the version as it could be used on letters and others. It consists of a deflecting mirror (4) _f which sits approximately at an angle of 45 above the rear wall recess (5) and, if required, has the property of being a small part of the light that is permeable to O, in order to counteract a shadow cast on the surface of the filament. The basic principle of the MF is that the light emitted from one or more LEs into the LK is often tossed back and forth between the side surfaces of the mirror and, due to its fanning out, spreads across the entire area to be illuminated , before it is finally caused by the continuously progressing distraction with the distance and the number of reflections (caused by the general fanning out of light, among other causes)

30 main reflection plate meets (Fig.3) _f to be emitted to the outside through the transparent cover plate. This main reflex plate also has a reflective surface, which has a large number of conical elevations _» whose side surfaces are approximately at an angle to the plane of the plate. The light coming at a very shallow angle strikes them in order to be reflected perpendicular to the plane of the plate. However, other solutions are also conceivable for directing the light out of the luminous element. For example, light-scattering u. reflective granular material. If necessary, defined auxiliary mirrors in the LK can optimize the light distribution (7).

When it comes to light supply, a single strong light source should normally be aimed for. This can be a halogen glow stick, which is embedded in a special reflector that bundles in one direction. An automatic changer with lamp storage magazine next to the lamp makes a system practically maintenance-free for decades. In (Fig.4) the light supply of a neon sign is shown in more detail. The light from the main conductor (8) _r fed into it by the deflecting mirror (9) from the light source (10) strikes the main conductor branches (11) here. They consist of partially reflecting deflecting mirrors, which can be made of transparent material with a partially transparent reflective coating or of reflective, opaque material »which has a large number of recesses. This executive branches provide a larger program in itself is, because they differ not only by the dimensions of their corresponding main conductor size, but also by the precisely defined percentage _"to give them to light in the LK. In individual cases, branches attached to the main conductor for the light supply of cut-off lighting contour parts, for example I points, may also be necessary. A special feature are luminous bodies that shine on both sides, such as banners, signs, etc. (Fig.5). Here, both sides take on the function of both the transparent cover plate and the main reflective plate, which is realized by either mirroring the light-deflecting structures of the transparent plates or simply by selecting a suitable material for them, which has the property of incident light in the Angle range up to 45 ° to reflect well, but for that to be transparent (cut according to Bc / Fig.5). A wide variety of accessories, such as brackets tailored to the system »frames etc. would be added in practice. It makes sense to design the mirror surface of the side surface (3) in a profiled manner in order to illuminate even the most complicated contour of an LK with a few LE. Furthermore, precautions must be taken at the light source that counteract overheating. With the light guides, it is intended to use a hollow mirrored mirror on the inside]. Finally, a special computer program for the manufacture of luminous elements based on MF must be planned. It should calculate the optimal attachment points of the LE and auxiliary mirror as well as their required number.

The yardstick is a degree of surface illumination that is absolutely homogeneous for the human eye.

Claims

claims

1.Multireflex surface lighting system for the uniform illumination of variously contoured areal luminaries, such as those found in neon signs, signs etc. with the basic manufacturing, -u. The principle of operation is that a hollow luminous body with the desired shape is always produced, which is characterized by the following features: a) a transparent, usually colored cover plate, the surface through which the light is emitted evenly to the outside (Fig.2 / l) which of which of the same shape and at a distance from

)0 millimeters to centimeters behind it b) main reflective plate comes (Fig.2 / 2) _# which can have any light reflecting or scattering surface, but should preferably be reflective and has a surface structure that has a maximum proportion of light perpendicular

ΛS reflects to the plate level, which strikes it across its entire surface at a flat angle (Fig.3j _l coming from the side plate (3) that connects the two plates and completely surrounds them) towards the inside of the lamp (3), which is independent of the shape of the lamp in any

20 confronts and thus a d) through at least one opening invisible to the viewer into the filament allows _» to reflect back and forth in many ways between the side surface and to run almost uniformly through the entire filament inside, provided that this is due to the beam path in the filament the

Requirement corresponds, on the one hand, to be strongly summarized in the extent to the luminous element depth (beam path parallel to the optical axis (Fig. 2) and, on the other hand, to be widely fanned out in the direction of the actual surface of the luminous element 2> 0 (Fig.lu.5) for which the use of only in the plane of scattering lenses or a suitable structuring of the mirror side surface (e.g. partial cylinder structure surface). The normal case is, however, that the light by means of a suitable reflector or the like receives.

2.Luminous lettering with luminous elements according to claim 1 with the special design that all luminous elements are supplied with 5 light by a single continuous main conductor by means of interrupting and diverting light quantities, so-called main conductor branches (Fig.),

3. Modular system for the manufacture of lighting fixtures

In addition to the raw panels for the transparent upper part of the luminous element (1) and the main reflective panel (2), there are different sizes and can be combined within one size, including a mirror material strip for the side surface (3), light input elements (4), light guides (8), main conductor branches ( 11), various designs of light sources u. Various accompanying the program, such as a standardized range of frames for illuminated signs »brackets and tools u. AS production aids etc.

4. Luminous body according to claim 1 with the special feature _» that the light is emitted on two sides» realized »in that both plates take on both the function of the main reflective plate and the transparent cover plate» or by using a 2.0 mirroring of their light-deflecting structures Desired reflective properties of the material for the plate is achieved.

5.Light input element for filament according to claim 1 with the special property that the deflecting mirror allows a defined,% approximately corresponding to the luminance of the filament light quantity.