RU2240470C2 - Decorative light built around light-emitting diodes - Google Patents

Abstract

FIELD: decorative lights such as indoor lighting fixtures, information signs, markers, display lights, alarms.

SUBSTANCE: proposed light has light source, transparent body, light guides mounted inside body, and color changing device. Light-emitting diode unit whose diodes have different emission spectrums is used as light source. Body is assembled of abutting plates whose planes are aligned with optical axes of light-emitting diodes; the latter are disposed in butt-end parts of plates.

EFFECT: extended service life, enlarged usability range with steady and uniform light flux, facilitated manufacture, reduced material input.

8 cl, 12 dwg

Description

The claimed invention relates to decorative lighting fixtures and may find application as an interior lamp, a lamp for various purposes, an information sign, in particular, as a vehicle license plate or light sign, marker, element of an advertising information device or alarm.

Known decorative lamp, which contains a housing made in the form of a hollow decorative container, a light source and a set of plates parallel to the main light flux (see, for example, RF patent No. 2026510 "Decorative lamp", IPC F 21 V 17/00, publ. 10.01.95, B.I. No. 1).

A disadvantage of the known technical solution is that a decorative lamp can find only limited use, for example, as a lamp in retro style. In it, an incandescent lamp is used as a light source, which has a short life, consumes a lot of energy, emits heat. In addition, the well-known lamp has a large weight, and special fixtures are required for its installation.

Also known is a decorative lamp described in the patent of the Russian Federation No. 2152555 "Decorative lamp", IPC F 21 S 10/00, publ. 07/10/2000, B.I. No. 19. The well-known decorative lamp contains a transparent body with a light source located inside it, and a decorative colored element in the form of a rotating impeller painted in different colors, which creates the effect of a color change.

A disadvantage of the known decorative lamp is similar to that described previously.

Closer in technical essence to this invention and adopted as a prototype is a decorative lamp described in US patent No. 5558421 "Decorative lamp (Decorative fiber optic lamp)", F 21 V 8/00 (NKI 363/32, publ. 24.09.1996 d. and consisting of a decorative casing made of a transparent material, a light source, optical fibers located inside the casing, and a device that changes the color of the light flux.

A disadvantage of the known decorative lamp is that in it, as well as in analogues, an incandescent lamp is used as a light source. The color change is made using a complex mechanical system using an electric motor. As a result, the design of the lamp is bulky, and the energy consumption is high. The life of the light source is short. In addition, the known lamp cannot be used, for example, as an information sign or advertising element.

An object of the invention is to increase the service life of a decorative lamp, expand the range of applications with a stable and uniform light flux with the ability to relatively easily change the color and redistribution of the light flux depending on the purpose, reduce the complexity of manufacturing and material consumption of the product.

The technical result is achieved due to the fact that in the LED decorative lamp containing a light source, a transparent casing, optical fibers located inside the casing, and a device for changing colors, according to the invention, a block of LEDs with a different radiation spectrum is used as a light source, the casing consists of of adjacent plates, the planes of which coincide with the optical axes of the LEDs, and the LEDs are located in the end parts of the plates.

In an embodiment of the technical solution, the LEDs in the unit are distributed into groups in several rows across the housing, so that the light fluxes of each group of LEDs in the series are directed inside one of the plates.

In a variant of the technical solution, the surface of the plates in the plan are made curly.

In a variant of the technical solution, information in the form of patterns or drawings having different colors is applied to both surfaces of the plates.

In an embodiment of the technical solution, transparent fibers are inserted inside the plates, so that the input ends of each fiber are located opposite one of the LEDs.

In an embodiment of the technical solution, LEDs are introduced in the cavity of the plates.

In an embodiment of the technical solution, the surface of the housing plates is corrugated, so that the protrusions of one of the plates coincide with the troughs of the neighboring ones.

In a variant of the technical solution, LEDs of different colors have a current regulator.

The use of a transparent material as a housing, consisting of parallel plates, in the end parts of which light sources are installed in the form of LEDs, ensures a uniform distribution of the light flux over the entire surface of the plates. Moreover, the use of LEDs as light sources leads to an increase in the life of the product to 100 thousand hours. There is also an ideal compatibility of LEDs with relatively low luminous fluxes and a low heating temperature and a layered body, which functions as a light guide and holder of light sources.

The use of a light source, made in the form of a block in which the LEDs are distributed in groups in several rows across the housing, so that the light fluxes of each group of row LEDs are directed inside one of the plates, allows you to create different illumination of each of the plates. As a result, the light range of the lamp is the most diverse.

Drawing on both surfaces of plates of drawings or drawings provides a large amount of information. Since the pictures are made in different colors, changing the color of the backlight, you can highlight individual groups of pictures.

The execution of the surface of the plates in a curly plan provides a great attractiveness of the lamp, in the case when it is used for purely decorative purposes or as an information sign.

The execution of the surface of the plates of the corrugated body, so that the protrusions of one plate coincide with the troughs of the neighboring ones, allows you to create a colorful picture of the play of light on kinks.

The presence of transparent optical fibers inside the plates, so that the input ends of each optical fiber are located opposite one of the LEDs, allows you to create light symbols for different purposes and, if necessary, change their color.

The introduction into the cavity of the plates of LEDs with a different emission spectrum makes it possible to widely change the spectrum and dynamics of the glow of information.

Since the LEDs have different colors and each group of LEDs of a certain color has a current regulator, this creates the opportunity to provide almost any color of the lamp housing or its individual plates.

LED decorative lamp is illustrated by drawings.

Figure 1 shows a LED decorative lamp, side view.

In Fig.2 there is a second projection of the lamp.

Figure 3 has a second projection of the LEDs arranged in a row along the plates of the housing.

Figure 4 shows a block of LEDs located across the housing consisting of plates.

Figure 5 has a second projection of a block of LEDs located across the housing.

Figure 6 presents the LED lamp with a figured body.

Figure 7 shows one of the plates of the housing with grooved marks on the surface.

On Fig given an embodiment of the sign on one side of the plate.

Figure 9 shows a variant of the housing with plates, the surfaces of which are corrugated, and the protrusions of one plate coincide with the depressions of adjacent plates.

Figure 10 shows a variant in which optical fibers are inserted inside the plates.

11 there is an option in which LEDs are introduced into the cavity, inside the plates.

On Fig shows a circuit diagram of the inclusion of light panels.

LED decorative lamp is as follows.

The housing of the lamp consists of several plates 1 (1, 2), in contact with the planes to each other. The plates can be made, for example, of polycarbonate or other transparent material, in the form of flat rectangular parallelepipeds. A light source in the form of a block 2 is installed from the end part of the casing. The light source consists of LEDs 3 arranged in one or several rows along the casing 1 (Fig. 3). LEDs have a different emission spectrum, and their light fluxes are mixed, and this light mixture passes into the plates.

In an embodiment of the technical solution, the light source in block 2 consists of LEDs 3 distributed in groups in several rows across the housing (Figs. 4, 5) so that the light fluxes of each group of row LEDs are directed inside one of the plates 1. LEDs located along of each row, have a different spectrum of radiation. Then each of the plates 1 is illuminated from the inside by LEDs with a different emission spectrum.

In a variant of the technical solution, the surface of the plates 1 in the plan is made curly (Fig.6). At the same time, the surface of the plate has a pattern made either in the form of grooves 4 (Figs. 7, 8) or in the form of a pattern 5 applied to the surface using a coloring matter. Information can be applied on both sides of any of the plates, and the drawings have a different color.

In an embodiment of the technical solution, the surface of the plates 1 of the body is corrugated, so that the protrusions 6 of one plate coincide with the depressions 7 of the adjacent ones (Fig. 9).

In an embodiment of the technical solution, transparent optical fibers 8 are inserted inside the plates 1 (Fig. 10). In this case, the input and output ends of each fiber are located opposite one of the group of LEDs 3.

In an embodiment of the technical solution, LEDs 10 are introduced in the cavity 9 inside the plates (Fig. 11). LEDs can have a different emission spectrum and turn on in a certain sequence.

LEDs 3 are divided into three groups with emission spectra: red (3 '), green (3' '), blue (3' ''), yellow 3 '' '', etc. (Fig. 12). In the power supply circuit of LEDs of various colors, there are current regulators, respectively for red 11, for green - 12, for blue - 13, for yellow 14, etc. The total number of diodes depends on the above design options and the required maximum luminous flux. In each individual circuit, the LEDs are connected in series. For example, in the diagram there are 4 series-connected LEDs of a certain emission spectrum. The circuit has a dimmer 15.

The end surfaces of the plates 1, with the exception of the area adjacent to the LEDs, can be coated with a reflective layer applied on the outside.

LED decorative lamp operates as follows. When you turn on the lighting devices 3 located along the plates (Fig.1, 2, 3), the light flux penetrates the entire inner space of the plates 1, providing a uniform glow of all surfaces. The reflective end layer of the plates 1 contributes to additional illumination of the surface of the lamp with reflected light. The resulting information is obtained by superimposing all the figures 5 (Fig. 8), applied on both sides of the plates 1.

Since the LEDs 3 have different colors, then, adjusting the current of a separate group of LEDs of different colors using current regulators 11, 12, 13, 14, etc. (Fig. 12), it is possible to change the luminous flux of each group of LEDs. The total color gamut is obtained as a result of adding the light fluxes of the LEDs used. If the information is applied in a different color, then when the backlight color is changed, part of the information will be poorly displayed, and the other part, on the contrary, is more clear. Thus, the symbolism of information can be adjusted. Using the controller 15, you can change the brightness of the luminaire.

A light source of relatively small power makes it possible to adjust in a wide range the overall brightness of the lamp or its individual plates by changing the brightness of individual groups of LEDs or by turning off some of them. At the same time, energy consumption is also reduced. Energy savings are also determined by the use of LEDs with relatively low consumption.

The use of LEDs is also justified by the fact that the heating temperature of their housing does not exceed 40 ° C, which determines the choice of non-heat-resistant and inexpensive plastic.

In the embodiment, when the LEDs 3 in block 2 are distributed into groups in several rows across the housing, each set of the group illuminates from the inside only one of the plates 1 (Figs. 4, 5). Since the LEDs have a different emission spectrum, then, including all of them together, or each separately, it is possible to obtain a different emission color of each individual plate 1 of the lamp and to obtain a wider amount of information. Using the controls 11-14, you can provide almost any color of the total radiation.

The presence of a corrugated surface (Fig. 9) will provide an additional colorful light picture of the distribution of luminous flux due to the play of light on fractures of the plates.

The use of the light guide 6 will make it possible to obtain light information corresponding to the pattern made of a transparent light guide. In this case, the color of the light flux emitted by the light guide depends on the combination of LEDs that are different in brightness and spectrum of light fluxes, which are illuminated from both sides of the light guides.

If the internal cavities 9 of the plates 1 are filled with LEDs 10 installed along the cavity (Fig. 11), then in this case the widest possible range of color change of the backlight of the plates is possible. By turning on the LEDs 10 in a different sequence, you can get a traveling wave of light along the cavity of the plate.

The luminaire can be attached to any surface or even located on a horizontal surface without any fasteners.

Claims (8)

1. LED decorative lamp containing a light source, a transparent casing, optical fibers located inside the casing, a device for changing colors, characterized in that a block of LEDs with a different emission spectrum is used as a light source, the casing consists of adjacent plates, planes which coincide with the optical axis of the LEDs, and the LEDs are located in the end parts of the plates. 2. The lamp according to claim 1, characterized in that the LEDs in the block are distributed into groups in several rows across the housing so that the light fluxes of each group of LEDs in the row are directed inside one of the plates. 3. The lamp according to claim 2, characterized in that the surface of the plates in the plan are made curly. 4. The lamp according to any one of paragraphs.2 and 3, characterized in that information is applied on both surfaces of the plates in the form of drawings or drawings made in different colors. 5. A lamp according to any one of claims 2 to 4, characterized in that transparent light guides are introduced into the plates so that the end ends of each light guide are located opposite one of the groups of LEDs. 6. The lamp according to any one of claims 1 to 5, characterized in that the LEDs are introduced into the cavity of the plates. 7. The lamp according to any one of claims 1 to 6, characterized in that the surface of the housing plates is corrugated so that the protrusions of one of the plates coincide with the troughs of the neighboring ones. 8. The lamp according to any one of claims 1 to 7, characterized in that the LEDs of different colors have a current regulator.

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