RU2207635C2 - Method for polychromatic illumination of information filed - Google Patents

Abstract

FIELD: equipment for interior and display lighting. SUBSTANCE: method includes lighting of surface- residing inscriptions, characters, or pictures with aid of light- emitting diodes of red, green, and blue radiation spectra, brightness of each group of light-emitting diodes of same radiation spectrum being varied by means of respective current regulator. Desired contract of picture that makes it possible to obtain comprehensive range of colors varying both in steady state and transient modes is attained due to corrugated surface of information field or due to corrugated characters or inscriptions residing on smooth information field. EFFECT: enlarged functional capabilities of light. 10 cl, 9 dwg

Description

 The invention relates to lighting equipment, is intended for use as a light indicator and can be used, for example, in the design of interiors of office buildings, stations, as an advertisement, etc.

 There is a method of polychromatic illumination of an information field in which a surface with symbols, images or inscriptions is illuminated from the back with the help of light sources consisting of LEDs. See, for example, RF patent N 2137211, MKI G 09 F 13/00 "Light pointer", publ. 09/10/1999 in B.I. N 25.

 The known method allows you to highlight available on the information field of the image.

 Its disadvantage is the limited scope, since the displayed information is not sufficiently contrasted and therefore poorly distinguishable, especially in conditions of large crowds, the presence of various kinds of advertising posters and with additional external illumination. In addition, changing information is quite time-consuming.

 Closer in technical essence and adopted for the prototype is the method of polychromatic illumination of the information field described in US patent N 5934798, NKI 362/497, MKI B 60 Q 1/56 "LED pointer" (Light emmition diod license lamp), publ. 08/10/1999

 In the known method, the information field is illuminated by a light source from LEDs located in front of the surface with symbols or inscriptions, which makes it relatively easy to replace the surface itself with information.

 However, the highlighted information, as in the previous technical solution, may not be distinguishable enough, especially in conditions of changing external lighting.

 The aim of this invention is to increase visual impact by creating greater image contrast, with a wide range of color shades that vary both in dynamic and in static mode depending on the purpose and ambient light. The result is increased versatility of the proposed method of illumination.

 This goal is achieved by the fact that in the known method of polychromatic illumination of the information field, which consists in the fact that the inscriptions, symbols or images contained on the surface are illuminated from the outside using LEDs, according to the invention, LEDs with red, green and blue are used as a light source emission spectra, and the brightness of each group of LEDs of one emission spectrum is changed using the corresponding current regulator.

 In the embodiment of the technical solution, the illumination is carried out by LEDs located in the plane of the information field, and the light flux is directed to the surface using reflectors.

 In the embodiment of the technical solution, the symbols and inscriptions on the information field are made of reflective material.

 In a variant of the technical solution, the surface of the information field is painted in one of the colors of the spectrum, for example, in blue or red.

 In a variant of the technical solution, the surface of the information field is corrugated.

 In a variant of the technical solution, the corrugated surface is made with sharp edges so that the light flux emanating from the light sources of each side illuminates one side of the corrugated surface.

 In the embodiment of the technical solution, the surface of the information field is smooth, and the symbols or inscriptions are corrugated.

 In a technical solution, a corrugated coating of transparent material is applied over the information field.

 In a variant of the technical solution, the information field is illuminated by light reflected from a transparent or translucent plane located at an acute angle to the field, from light sources mounted between the plane and the table on the side opposite the acute angle.

 The use of LEDs with red, green and blue emission spectra allows you to change the color of the table field and the color of information, depending on the lighting conditions or to attract attention.

 Illumination of the information field by reflected light from light sources located in the plane of the information field expands the possibilities of designers, helping to increase the versatility of the method.

 The use of reflective material for inscriptions or symbols makes the information more contrast.

 Coloring the information field in one of the colors of the spectrum, for example, red or blue, makes it possible to vary the resulting background color by changing the spectral composition of the light sources. It also enhances the visibility of information.

 The implementation of the corrugated table surface allows coloring the information surface in the rainbow color, which also helps to draw attention to the information.

 The execution of the surface of the information table in the form of a corrugation with sharp edges so that the light flux emanating from the light sources, reflected from the corrugated surface, are directed toward the observer, allows you to make the information more contrast.

 Running a smooth table with corrugated characters or inscriptions helps increase the visibility of information.

 The presence of a transparent corrugated coating applied over the information provides a higher contrast between the field and the inscription.

 In the presence of a transparent or translucent surface, located at an angle to the information field with light devices placed between the transparent surface and the field on the side opposite the acute angle, makes it possible to more fully use the luminous flux of light sources and, thereby, increase the visibility of information or reduce the number of light sources. An additional advantage of this embodiment of the technical solution is also the ability to ensure complete tightness of the structure.

 The presence of all the listed cumulative elements of this invention improves the visual perception of information, increases the versatility of the proposed method for polychromatic highlighting of information, helps to expand ergonomic design capabilities by increasing the color range of the information field.

 The presented invention is illustrated by drawings.

 In FIG. 1 shows a device that implements this method, made in the form of a table with the inscription (top view).

 Figure 2 presents the front view of the device.

 In FIG. 3 there is an image of a device according to this method, in which the information field is illuminated using reflectors directing the light flux from light devices located in the plane of the information field.

 In FIG. 4 shows a circuit diagram of the inclusion of LEDs.

 In FIG. 5 is a graph of the dependence of the light intensity (brightness) of the LED on the magnitude of the current flowing through it.

 Figure 6 shows a variant of a fragment of the table surface (information field) in corrugated design (top view).

 Figure 7 shows a fragment of the corrugated surface of the table with sharp edges (top view).

 On Fig given a variant of the technical solution, in which there is a corrugated coating of transparent material covering the information field of the table (top view).

 Fig. 9 has a structure in which the table surface has a transparent coating positioned at an angle to the surface (side view).

 General details in all figures are denoted identically.

 The device, according to the method of polychromatic illumination of the information field, is made as follows. Table 1 (Fig. 1) has a surface (information field) 2, on which information 3 is applied with the line width of the inscription "d" in the form of characters, figures or inscriptions (Fig. 2). The surface 2 is illuminated by light sources 4 (FIGS. 1, 2) located on both sides of the information field on the holders 5 so that the light flux from them is directed toward the table surface at an angle to it. The light sources 4 can also be installed in the plane of the surface 2 of table 1 (Fig. 3), and the light flux from them is directed to the surface 2 by reflectors 6. The information 3 applied to the surface 2 can be made of reflective material.

 Each light source 4 consists of LEDs having red, green and blue emission spectra. Each group of LEDs of the same emission spectrum is connected to the power source through the corresponding current regulator. So, the LEDs with a red emission spectrum 4 '(Fig. 4) are connected to the regulator 7. The LEDs with a green emission spectrum 4' 'are connected to the regulator 8, and, finally, the LEDs with the blue emission spectrum 4' 'are connected to the regulator 9. The connection diagram of the LEDs depends on their number. In this case, each group consists of six elements of the same color and connected in series-parallel fashion. Structurally, in one housing, three LEDs with red, green and blue emission spectra can be integrated.

 Surface 2 of table 1 can be painted in any color of the spectrum, for example blue or red.

The current I _F flowing through the LED, and the light intensity (brightness) I _v emitted by the LED, are interconnected by a practically direct proportion (line 10 in FIG. 5).

 In a variant of the technical solution, the entire surface of table 1 is corrugated (11) (Fig. 6). Moreover, the distance between the corrugations of the corrugation is much smaller than the width "d" of the line of the inscription 3.

 In an embodiment of the technical solution, the surface 11 of table 1 together with symbols or inscriptions 3 is made in the form of a corrugated surface (Fig. 7) with sharp edges 12, and the angle of inclination of the faces is arranged so that the light flux coming from the LEDs 4 of each side illuminates one side corrugated surface 11, and the light reflected from the surface was directed toward the observer. The length of the folds at the base of the corrugation is much less than the width of the line d of the inscription 3 or the symbol running along the folds.

 In the technical solution, the symbols or inscriptions 3 are corrugated and attached to the smooth surface 2 of table 1 (not indicated).

 In an embodiment of the technical solution, the surface 2 of table 1 with symbols or inscriptions 3 is covered with a transparent material 13 (Fig. 8), the outer surface 14 of which is corrugated.

 In a technical solution, the surface 2 of table 1 with symbols or inscriptions 3 has a transparent or translucent coating 15 (Fig. 9) of glass or plastic, located at an acute angle to surface 2. Lighting devices 4 are on the side opposite to the acute angle on the holder 5 . In this case, the axis of the light flux from the light sources 4 can be directed parallel to the surface 2.

 The light pointer, made according to the method of polychromatic illumination of the information field, operates as follows. LEDs 4 (Fig. 1, 2, 3) illuminate the information field (table surface) 2 from two sides, filled with information 3, direct (Fig. 1, 2, 6, 7, 8) or reflected light (Fig. 3, 9 ) Groups of LEDs with different emission spectra of 4 ', 4' 'and 4' '', receiving power from the corresponding current controller 7, 8 or 9 (Fig. 4), change their brightness depending on the magnitude of the current flowing through them.

 According to the colorimetric system, any color with a wavelength of 380-780 nm can be obtained by mixing three colors: red, green and blue in various proportions (see, for example, Prince N. Schepkina, Fundamentals of Lighting Engineering. M .: Energoatomizdat, 1985 p. 264-288). By changing the brightness of a group of LEDs with red, green, or blue emission spectra using the controls 7, 8, and 9, one can thus obtain any color of the illumination of the information field. Moreover, this polyharmonic illumination can continuously change in a dynamic mode due to the use of alternating voltage generators with a certain character of current change, installed in the LED circuit, or a static illumination of the information field can be created. Such illumination draws attention to information, even in the presence of additional external light sources. So, in the sunlight falling on the information field, you can attract attention, for example, by highlighting the field in red or blue. In principle, it is possible, through the use of a light sensor, to change the backlight information in the presence of additional external light sources.

 To increase the contrast between the background (surface 2 of table 1) and information 3, surface 2 is covered with monochromatic paint, for example blue or red. If surface 2 is red, then under blue light from LEDs 4, the background will turn black, thus shading the bluish inscription. A similar effect will be with a combination of the blue surface of the field when it is exposed to red light. Only the information will glow with a reddish tint. In other words, the apparent background color will be determined by the combination of the surface color and the total spectral composition of the radiation emanating from the light sources 4.

 In the case where table 1 (Fig.6) has a corrugated surface 11, then its color will depend on what angle the corrugated part is located at. So, parts of the corrugation surface that run parallel to the plane of table 1 will be painted in a color determined by a mixture of light fluxes directed from two sides of the light sources 4, and parts of the corrugation that are at an angle to the plane of the table will have a color determined by the total light a spectrum of radiation directed from one side or another from the light sources 4. This provides a multi-colored, rainbow background of the surface and image.

 The presence of the corrugated surface 11 with sharp edges 12 (Fig. 7) can significantly increase the visibility of the information, since the light flux from the inscription is directed towards the observer, on the other hand, it is possible to provide a multi-colored background and image due to the illumination of the corrugated information field in different colors on each side .

 The use of corrugated inscription 3 on a smooth field 2 of table 1 when illuminating the inscription with lamps 4 will provide good contrast, and changing the color of the backlight will draw attention to the inscription.

 If the surface of table 2 with inscriptions 3 is covered with a transparent material 13 with an external corrugated surface 14 (Fig. 8), then due to the fact that the light flux passes differently through the flat lenses formed by the waves of the corrugation 14, the illumination of the information field will have an unusual coloring, when you consider that light sources have a different radiation spectrum. This allows you to draw attention to the inscription even in the presence of additional external light sources available in a circle.

 In the embodiment shown in Fig.9, where there is a transparent or translucent coating 15 (Fig.9), located at an angle to the surface 2 of table 1, provides a more complete use of the light flux from the light sources 4. In this case, the backlight can be carried out with only one side, since the light flux, repeatedly reflected from the coating 15 and the surface 2, gives uniform illumination. This solution allows, in addition, to seal the information field together with light sources, which allows you to use this option when lighting, for example, valuable art paintings. In this case, surface heating is practically eliminated, since LEDs, as you know, have a low case temperature.

 In the aggregate of the proposed technical solutions, this method of polychromatic illumination of the information field provides ample opportunities for the execution of inscriptions of images or symbols for various purposes.

Technical and economic advantages of the proposed method for polychromatic illumination of the information field are as follows:
1. The universality of the luminous object is enhanced due to the possibility of a large selection of coloring options for information and background in both static and dynamic mode and depending on external additional illumination.

 2. The contrast of information is also increased due to various options for changing the background color and information.

Claims (10)

 1. The method of polychromatic illumination of the information field, which consists in the fact that the inscriptions, symbols or images contained on the surface are illuminated from the outside using LEDs with red, green and blue emission spectra and the brightness of each group of LEDs of one emission spectrum is changed using the corresponding current controller , characterized in that the surface of the information field is corrugated.  2. The method of polychromatic illumination of the information field according to claim 1, characterized in that the corrugated surface is made with sharp edges so that the light flux emanating from the light sources of each side illuminates one side of the corrugated surface.  3. The method of polychromatic illumination of the information field according to any one of paragraphs. 1 and 2, characterized in that the corrugated coating is made of a transparent material.  4. The method of polychromatic illumination of the information field according to any one of paragraphs. 1-3, characterized in that the information field is illuminated by light reflected from a transparent plane located at an acute angle to the field from light sources installed between the plane and the field on the side opposite to the acute angle.  5. The method of polychromatic illumination of an information field according to any one of claims 1 to 4, characterized in that the surface of the information field is painted in one of the colors of the spectrum, for example, blue or red.  6. The method of polychromatic illumination of the information field, which consists in the fact that the inscriptions, symbols or images contained on the surface are illuminated from the outside using LEDs with red, green and blue emission spectra and the brightness of each group of LEDs of one emission spectrum is changed using the corresponding current controller , characterized in that the surface of the information field is smooth, and the characters or inscriptions are corrugated.  7. The method of polychromatic illumination of the information field according to claim 6, characterized in that the corrugated symbols or signs are made with sharp edges so that the light flux emanating from the light sources of each side illuminates one side of the corrugated surface.  8. The method of polychromatic illumination of the information field according to any one of paragraphs. 6 and 7, characterized in that the corrugated coating is made of a transparent material.  9. The method of polychromatic illumination of the information field according to any one of paragraphs. 6-8, characterized in that the information field is illuminated by light reflected from a transparent plane located at an acute angle to the field from light sources installed between the plane and the field on the side opposite to the acute angle.  10. The method of polychromatic illumination of an information field according to any one of claims 6 to 9, characterized in that the surface of the information field is painted in one of the colors of the spectrum, for example, blue or red.

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