Illumination – Revolving
Patent
1991-07-25
1992-09-08
Dority, Carroll B.
Illumination
Revolving
362 32, 40562, F21V 704
Patent
active
051452464
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an arrangement for collecting and emitting light via defined surface areas in order to create a slide and comprising a number of transparent plate elements, collector plates, which are designed to receive incident light at one or more of their surfaces, collector surfaces, and to emit the received light at one or more of their other surfaces, emission surfaces, in which respect the collector plates consist of fluorescent material designed to convert received ultraviolet light to visible light.
PRIOR ART
It is previously known to use transparent plastic plates for transmission of light, for example in connection with advertisement boards, or other information boards, in which respect a particularly good effect is achieved by using fluorescent Plexiglas, which emits collected ultraviolet light in the form of visible light.
TECHNICAL PROBLEM
Certain types of information arrangements are often placed in such a position that it is impossible to provide for power supply by means of connection to the existing electricity network. Examples of such a type of information arrangement are lights, which are of the type described in Swedish Patent Application No. 8603071-5, where strip-shaped light symbols appear.
The aim of the present invention is to provide an arrangement of the type described above, which permits a very great light exchange by using both sunlight and artificial light as the light source.
INVENTION
The said aim is achieved by means of an arrangement according to the invention, which is characterized in that the arrangement includes a plate, which forms a carrier for the slide which is to be presented, and in that the said plate elements are set transverse to the said carrier plate with their light-emitting surfaces bearing against the rear side of the carrier plate, and in that the said light-emitting surfaces are situated in strip-shaped intermediate spaces between opaque parts of the carrier plate.
DESCRIPTION OF FIGURES
The invention will be described in greater detail below on the basis of an exemplary embodiment and with reference to the attached drawings, in which
FIG. 1 shows schematically a partially broken side view of the arrangement according to the invention,
FIG. 2 shows a front view of the arrangement, while
FIG. 3 shows, on a greatly enlarged scale, a broken part of a vertical section through the arrangement according to the invention along the line III--III in FIG. 1.
PREFERRED EMBODIMENT
The arrangement shown by way of example in the drawings consists of a light, which uses the moire technique in order to indicate to the viewer, by means of a pattern, where the former is situated relative to a plane of symmetry. The position of the viewer is indicated by means of a pattern varying in relation to the position, which is described in greater detail in, for example, the abovementioned Swedish Patent Application No. 8603071-5. In order to form this pattern, a light source 1 is required and at least two screen units set at an angle relative to each other, a front screen unit 2 and a rear screen unit 3. In the example shown, the front screen unit is divided up into two screen parts 4, 5 which are set at an angle to each other, as shown in FIG. 1. The screen units 3, 4, 5 are supported by a frame 6 consisting of, for example, two side pieces 7, 8 and a crosspiece 9 and a lower support piece 10, the frame exposing maximally the information surface 11 formed by the screen units, on which surface 11 information symbols appear.
According to the invention a number of light-collector plates 12, 13, 14, 15 are connected to the rear screen element 3 and extend over the entire height of the screen unit 3 and advantageously have different widths, a central collector plate 12 having the greatest width, and the width of the other plates decreasing successively in the direction towards the sides. The collector plates 12-15 have downward-directed end surfaces 16 which form collector surfaces for picking up incident light together with the mu
REFERENCES:
patent: 1893024 (1933-01-01), Gill
patent: 4223374 (1980-09-01), Kimmel
Dority Carroll B.
Moagon AG
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