RU2240471C2 - Fiber-optic chandelier built around light-emitting diodes - Google Patents

Abstract

FIELD: lighting fixtures for decorative illumination of various possessions such as restaurants and the like.

SUBSTANCE: proposed chandelier has frame in the form of disk divided into sectors, each accommodating case, light sources assembled of diodes emitting red, green, and blue light, as well as light-emitting diodes disposed in output holes of cases. Each case is covered with light-reflecting layer that provides for inward direction of light beam. Side surfaces of cases are concave and are described by second-degree equation. Bottom parts of cases are disposed over disk perimeter and output holes in bottom parts of cases are facing disk center. Light sources are disposed in bottom parts of cases. Input holes of light-emitting diodes are disposed in frame center. Output ends of light-emitting diodes terminate in light-refracting components made in the form of various three-dimensional figures, such as cubes, stars, and the like.

EFFECT: enlarged space covered by light beam, extended color gamut, enhanced decorative effect, enlarged functional capabilities.

7 cl, 11 dwg

Description

The claimed invention relates to lighting equipment designed to create decorative lighting effects on objects of various purposes, for example, when decorating office spaces, train stations, pageants, cafes, restaurants, etc.

Known LED chandelier described in the patent of the Russian Federation No. 2123633, MKI F 21 S 1/04 "Lighting device", publ. 03/20/1998 in B.I. Number 35.

Known chandelier contains a frame, suspension elements and three-color light sources, consisting of LEDs with red, green and blue emission spectra.

The well-known LED chandelier does not allow to smoothly change the color of the radiation. Its disadvantage is the relative limited color gamut of radiation and, as a consequence, the limited range of applications.

Closer in technical essence and adopted for the prototype is an LED fiber optic chandelier, described in US patent No. 530109, F 21 V 8/00 (NKI 362-32) "Lamp (Luminaire)", publ. April 5, 1994

Known LED chandelier contains a frame with housings with light sources, made in particular on LEDs, with a different emission spectrum and fed from different generators with variable voltage, and fiber-optic optical fibers that conduct light flux and a luminous surface made in the form of a panel.

The known device allows you to smoothly change the color of the radiation.

Its disadvantage is the limited color gamut of radiation and the limited range of application, determined by the shape of the luminous surface.

The aim of this invention is to create a luminous flux covering a larger volume of space, expanding the color range of the backlight and, as a result, increasing the decorative effect and range of application.

This goal is achieved by the fact that in the known LED fiber optic chandelier containing a frame with housings in which light sources are installed in the form of LEDs with red, green and blue emission spectra, fiber optic fibers located in the outlet openings of the housings, and a luminous surface, according to to the proposal, the frame is made in the form of a disk divided into sectors, a housing is installed in each sector, each housing contains a common board with LEDs with red, green and blue emission spectra, the board is installed it is located in the bottom of the case, the case is covered with a reflective layer directing the light flux inward, and is symmetrical about the central axis, has a concave surface described by a second-order equation, the bottom parts of the cases located along the perimeter of the disk, the outlet openings facing the center of the disk, the fiber inlet openings The optical fibers are located in the center of the frame, and the luminous surface is formed by light-refracting elements installed at the output of the optical fibers.

In an embodiment of the technical solution, two surfaces of the housing are made flat and parallel to each other, the other two surfaces are concave and are described by a second-order equation.

In an embodiment of the technical solution, flat cases are mounted in sectors of the disk in several layers.

In a technical solution, fiber optic fibers are distributed around the perimeter of the hoop located below the frame, and the hoop is made of spring material and contains diametrically located sliding rods.

In an embodiment of the technical solution, fiber optic fibers are distributed in the form of tree branches.

In a variant of the technical solution, the light-refracting elements are made in the form of various three-dimensional figures (star, parallelepiped, cube, etc.).

In an embodiment of the technical solution, the LEDs are electrically divided into groups of the same color, and each group of LEDs is connected to a voltage generator with a voltage that varies with time.

In an embodiment of the technical solution, the groups consist of LEDs with a different emission spectrum.

The implementation of the LED fiber optic chandelier with a frame made in the form of a disk divided into sectors, in each sector of which there is a board with LEDs with red, green and blue emission spectra, and each case is made symmetrical about the central axis, has a concave surface described by the equation second order, allows you to create a powerful total luminous flux directed into the inlet holes of the optical fibers located in the center of the frame. Obtaining a luminous surface formed by refractive elements installed at the output of fiber optic fibers allows you to create a three-dimensional light source.

In the embodiment, when two surfaces of the housing are made flat and parallel to each other, it allows to reduce the thickness of the frame.

In the embodiment, when flat cases are mounted in sectors of the disk in several layers, it allows the formation of a multi-section frame with high light output.

In the embodiment, when the fiber-optic fibers are distributed around the perimeter of the hoop located below the frame, and the hoop is made of spring material and contains diametrically located sliding rods, it will allow to give the light flux contour various spatial configurations.

In the embodiment, when the fiber optic fibers are distributed in the form of tree branches, a decorative effect is created in the form of a luminous plant.

The execution of light-refracting elements in the form of various three-dimensional figures (star, box, cube, etc.) increases the decorative properties of the lamp.

The electrical inclusion of the LEDs, divided into groups of the same color, and the connection of each group to a voltage generator with time-varying voltage allows you to create a volumetric and changing in color and intensity of the light flux.

The inclusion in the group of LEDs with a different emission spectrum makes it possible to create multi-colored coloring of individual parts of the chandelier.

The proposed technical solution due to the variety of decorative lighting effects can be widely used for decorative illumination of a variety of objects, which expands the scope of this solution.

The description is illustrated by drawings.

Figure 1 shows a plan view of the frame with buildings in which light sources are installed.

Figure 2 shows the body in the form of a cone.

Figure 3 shows the housing in a flat design.

Figure 4 presents the design of the frame, combined with the input ends of the fiber optic optical fibers, the housings of which are located in two layers.

Figure 5 draws a chandelier suspended from the ceiling.

Figure 6 is a view of the fastening of the hoop.

7 shows embodiments of light-refracting elements.

On Fig shows a chandelier decorated in the form of a tree.

Figure 9 is a schematic diagram of the inclusion of LEDs with a different emission spectrum.

Figure 10 shows the nature of the dependence of voltage on time for generators supplying LEDs with a different emission spectrum.

In Fig.11 there is a graph of the luminous flux of the LEDs depending on the current.

Elements common to all figures are denoted identically.

LED fiber optic chandelier is as follows. Frame 1 (figure 1) is a disk, divided into sectors (not indicated). In each sector, a casing 2 is installed (Fig. 2), made of a transparent plastic material and coated on top with a reflective layer (not shown) that directs the light flux into the casing. The housing is symmetrical about the central axis, has the form of a cone, the side surfaces 3 of which are concave inward and are described by a second-order equation. The bottom parts of the 4 cases have a spherical surface with a radius equal to the radius of the disk 1. In the bottom parts 4 of each case, located along the perimeter of the disk 1, matrices with LEDs 5 with red, green, and blue emission spectra are installed. The outlet openings of the 6 cases face the center of the disk. The light fluxes of the LEDs 5 are directed towards the outlet 6. In the center of the disk are bundles of fiber optic optical fibers 7 (Figs. 1, 2), so that their input end surfaces enter the outlet openings 6 of the cases 2.

In an embodiment of the technical solution, the housing 8 (FIGS. 3, 4) is made flat and symmetrical with respect to the radial axis. The housing has concave lateral surfaces 9, also described by a second-order equation. The bottom parts of the housings (not indicated) have the form of a cylinder with a radius equal to the radius of the disk 1. Light sources 5 — LEDs with red, green, and blue emission spectra are located at the bottom of the housing. The outlet openings of the housings 10 are in the form of a rectangle and are coupled with fiber optic optical fibers 7, the end surfaces of which are also in the form of a rectangle.

Flat housing 8 can be installed in two (figure 4) or three layers, which allows you to complete the light source with a large luminous flux.

In turn, the disk 1 with the holder 11 and rods 12 (Fig.5) is suspended from the ceiling. Below the disk there is a hoop 13, inside which there are diametrically extending rods 14, the ends of which are articulated with the hoop 13. The optical fibers 7 hang freely, passing from the center of the disk 1 and distributed around the circumference of the hoop 13. The optical fibers are equipped with cuffs 15 (Fig.6) that hold hoop 13. The lower end surfaces of the optical fibers 7 have elements 16 refracting the light flux made of glass, crystal, or transparent plastic. The refractive elements 16 may have a different configuration, for example, in the form of stars, crescents, cubes, etc. (Fig.7).

In the embodiment of the technical solution, the LED fiber optic chandelier is made in the form of a branchy tree (Fig. 8), the base of which is a disk 1 with cases made as in Fig. 2 or Fig. 3 in a single-layer or multi-layer version. The trunk 17 of the tree are bundles of optical fibers 7, extending from the outlet openings of the buildings (not indicated). Branches 18 of the tree are branched fiber optic optical fibers made of a transparent material and ending with light-refracting elements 16.

The light sources are divided into groups of red 5 ', green 5 "and blue 5'" (Fig.9) radiation spectra. Each group of LEDs is connected to its own voltage regulator, respectively 19, 20, 21, which, in turn, are connected to a common converter 22 and have a switch 23 that connects the converter 22 to the power source 24.

The voltage regulators 19-21 provide various graphs of voltage changes (Fig. 10), for example, for regulator 19 this graph is indicated by 25, for 20 by 26 and for regulator 21 by 27. The relationship between the voltage supplied to the LED and the emitted luminous flux f is almost linear and is indicated in figure 11 by the number 28.

In the embodiment of the technical solution, the groups consist of LEDs with a different emission spectrum, for example, LEDs 5 ', 5 "and 5'" are connected in one branch.

In a variant of the technical solution, the hoop 13 is made of spring material.

LED fiber optic chandelier operates as follows. The LEDs 6 (1, 2, 3) create light fluxes that are distributed throughout the housings 2 and are concentrated in the output holes 6 or 10, and enter the fiber optic optical fibers 7. Part of the light flux, repeatedly reflected from the reflective layer, also ultimately, it enters the optical fibers due to the complex surface of the casing 3. Moreover, mixing and uniform distribution of light fluxes with red, green, and blue emission spectra occurs at the input ends of the optical fibers. The selected form of the housing, as practice shows, is optimal for combination with optical fibers 7. Through the optical fibers 7, the transmitted total light flux is scattered in the light-refracting elements 16. This creates a decorative effect caused by many luminous bodies. Using the sliding rods 14, you can create various spatial combinations of luminous bodies, for example, in the form of a ring, diamond or ellipse. The resulting color created by the luminous bodies is determined by combinations of three colors: red, green and blue. Using the regulators 19-21, the light fluxes of each group of LEDs change over time. As you know, most color shades, including white, can be formed by adding three color components, red, green and blue. The resulting color of all luminous bodies will also change both in color and in brightness, providing almost the entire color gamut. In an embodiment, when the groups of LEDs 6 connected to the voltage regulators have a different emission spectrum, different luminous bodies will have a different color and light tray. The result is a colorful effect of the play of color and light on the faces of the refracting elements 16.

As a light source in the chandelier, a single-case tri-color LED 6 with red (5 '), green (5 ") and blue (5'") emission spectra can be used.

A similar effect of a smooth and spatial distribution of the light flux is formed when the chandelier is in the form of a tree (Fig. 8).

The main advantages of this invention are:

Obtaining large light fluxes with an optimal arrangement of light sources.

A wide range of color changes.

The formation of a colorful spatial light flux, formed either in the form of luminous figures hanging from above, or in the form of a tree with luminous branches.

Claims (7)

1. LED fiber optic chandelier containing a frame with housings in which light sources are installed in the form of LEDs with red, green and blue emission spectra, fiber optical fibers located in the outlet openings of the housings, and a luminous surface, characterized in that the frame is made in the form of a disk divided into sectors, a housing is installed in each sector, each housing contains a common board with LEDs with red, green and blue emission spectra, the board is installed in the bottom of the housing, the housing is covered with This reflective layer directing the light flux and made symmetrical with respect to the central axis has a concave surface described by a second-order equation, the bottom parts of the housings located around the perimeter of the disk, the outlet openings facing the center of the disk, the inlet openings of the optical fibers located in the center of the frame, and the luminous surface formed by refractive elements installed at the output of the optical fibers. 2. The LED fiber optic chandelier according to claim 1, characterized in that the two surfaces of the housing are made flat and parallel to each other, the other two surfaces are concave and are described by a second-order equation. 3. The LED fiber optic chandelier according to claim 1 or 2, characterized in that the optical fibers are distributed around the perimeter of the hoop located below the frame, the hoop made of spring material and contains diametrically located sliding rods. 4. The LED fiber optic chandelier according to claim 1 or 2, characterized in that the fiber optic fibers are distributed in the form of tree branches. 5. The LED fiber optic chandelier according to any one of claims 1 to 4, characterized in that the light-refracting elements are made in the form of various three-dimensional figures, for example, in the form of a star, parallelepiped, cube. 6. The LED fiber optic chandelier according to any one of claims 1 to 5, characterized in that the LEDs are electrically divided into groups of the same color and each group of LEDs is connected to a voltage generator with time-varying voltage. 7. The LED fiber optic chandelier according to claim 6, characterized in that the groups consist of LEDs with a different emission spectrum.

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