RU2566660C2 - Led-based spotlight - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: invention is referred to the area of light engineering, and namely to lighting facilities with solid-state semiconductor light sources. The device comprises radiator housing, light module, power supply source, inner or outer translucent screen. Technical result is attained by the fact that translucent screen is complete with lenses of modular optics, and at light source shift in regard to the above lenses focus it is possible to produce a number of light intensity curves, which may be used for lighting of different objects at different height by the same lighting device. Besides, impact-resistant translucent screen combines protective and optical functions as well as sealing function thus simplifying assembly of the article, and heat-dissipating fins protruded outside the spotlight case dissipate heat additionally thus allowing decrease in its weight.

EFFECT: improved heat removal, simplified assembly and reduced weight of the spotlight.

8 cl, 14 dwg

Description

Technical field

The invention relates to the field of lighting with solid-state semiconductor light sources and is intended to produce directional light with the formation of various KSS (light intensity curves) for use mainly in the railway sector, as well as in industrial and domestic needs.

State of the art

For the prototype of the claimed invention, the decision was made according to patent RU 82481 U1, IPC F21S 4/00, F21W 131/00 dated 12/30/2008 “SPEJECTOR”. The searchlight contains a housing made of heat-conducting material, an LED matrix, a current source (if necessary, a control controller), a protective translucent material for indoor use, and a protective translucent material together with a sealing gasket and a protective cover for outdoor use, as well as a mounting bracket for mounting and cover plate for decorative purposes. The disadvantage of a searchlight is a reduced degree of tightness of the device even when using a protective cover, since the contour of the protective cover does not allow uniformly clamping the seal between the translucent material and the body. The assembly of the device when installing the seal, decorative cover-plugs, translucent material, protective cover is difficult, which negatively affects the complexity of the assembly, as well as the quality of the product. The scope of the spotlight is limited to that issued by the SCC, formed by a matrix of LEDs (a translucent screen is used as a protective light transmitting material).

SUMMARY OF THE INVENTION

The technical problem to be solved during the creation of the claimed invention is relevant mainly for the railway sector and is caused by the problem of lighting railway tracks and trains over long distances and large areas, especially for large transport hubs, where high lighting poles with light devices are used for these purposes. Such devices are required to form a whole series of KSS, depending on the installation height, i.e. in fact, their implementation requires a number of different lighting devices. In the claimed invention, this problem is solved by the use of modular optics, made in one with a translucent screen. The required different KSS are obtained due to the displacement of solid-state light sources relative to the lenses of modular optics. In this case, the translucent screen is made in the form of modular optics with a set of lenses or one lens, and depending on the required light intensity curve, the light sources are located either in the focus of the lenses of the modular optics, or with an offset relative to them. At least one of the lenses can be concave or convex.

In addition, in the claimed invention, the heat dissipation capabilities of the housing are improved due to the fact that the cooling fins extend beyond the dimensions of the housing body and the translucent screen, and therefore, the air circulation through them is more intense. The possibility of using an external power source reduces operating costs (the resource of the power source is significantly less than the resource of the light modules, and if the external power source fails, it is quite easy to replace).

The body of the spotlight is made of heat-conducting material, has a light module compartment, in which light modules with solid-state light sources and a power supply compartment are located, located above and below, respectively, with a partition between them and combined from the back with a set of longitudinal heat-dissipating ribs.

The searchlight according to the claimed invention contains a fastening U-shaped bracket with fastening to the sides of the housing for its fastening.

The searchlight according to the claimed invention contains a translucent screen on the front side of the searchlight with fastening to the reinforced edging of the housing through a sealing sealing cord. In contrast to the prototype, in which a translucent material and a protective cover are used for this purpose, a single translucent screen has a greater rigidity, thereby sealing the cord is clamped evenly, which allows for a protection class of IP67 inclusive.

Along the way, the tasks of improving the quality of the lighting device and reducing its cost by expanding the functions of a translucent screen, which simultaneously serves as a protective, sealing and optical component of the device, are being solved.

The inventive lighting device is focused on the use of light modules based on solid-state semiconductor sources of both white light and monochrome (in this case, a phosphor layer is applied to the inner surface of the translucent screen). In addition, the light module can be made using the technology "chip on the board" ("chip-on-board").

The inventive lighting device may have an explosion-proof design, provided by filling the light module and the internal power source with an electrical compound. In this case, the partition between the two compartments: the light and the power supply compartment forms two independent niches, which allows to reduce the consumption of the electrical compound.

The inventive lighting device can be equipped with an external power source for quick replacement in case of failure of the device, because the power source has a shorter life compared to the light emitting part.

To protect against vandalism, a translucent screen is made of shockproof material, such as polycarbonate.

The technical solution with the claimed combination of essential features of an independent claim is not known from the prior art, which confirms its compliance with the patentability condition - novelty.

List of drawings

The invention is illustrated by drawings in figures 1-14:

figure 1 - LED floodlight (translucent screen made with lenses of modular optics, a perspective view from below);

figure 2 - LED floodlight (translucent screen made with lenses of modular optics, top view of a perspective view);

figure 3 - LED floodlight (translucent screen is made with lenses of modular optics, bottom view);

figure 4 - LED floodlight (translucent screen is made with lenses of modular optics, top view);

5 - LED floodlight (translucent screen is made with lenses of modular optics, front view);

6 - LED floodlight (translucent screen is made with lenses of modular optics, rear view);

Fig.7 - LED floodlight (translucent screen is made with lenses of modular optics, side view);

Fig. 8 - LED floodlight (view in perspective from below, a translucent screen is conventionally not shown);

Fig.9 - housing of the LED spotlight (view in perspective of the bottom);

figure 10 - LED floodlight with an external power source (top view of a perspective view);

11 - LED floodlight with a mounting bracket (top perspective view);

Fig - LED floodlight (view in perspective from below, the translucent screen does not contain a lens of modular optics, illustration);

Fig - LED floodlight (translucent screen is made with lenses of modular optics, illustration);

Fig - LED floodlight (translucent screen does not contain a lens modular optics, illustration).

The list of items indicated in the figures

1. LED floodlight housing;

2. Niche of the light module;

3. Niche internal power source;

4. Lugs of fastening of the internal power supply;

5. The groove of the housing for laying the sealing cord;

6. Boss fastening an external power source;

7. The hole in the input of the power cable or cable from an external power source;

8. A hole for grounding the device;

9. The structural element of the housing for mounting the mounting bracket;

10. The partition between the compartments of the light module and the internal power source;

11. Translucent screen;

12. Lens of modular optics of a translucent screen;

13. The light module;

14. The power source is internal;

15. A structural element of an external power source;

16. Fixing bracket.

The implementation of the invention

LED Floodlight can be implemented as follows. In the niche 2 of the housing 1 of the searchlight is a light module 13, containing at least one solid-state semiconductor light source. An internal power source 14 is attached to the bosses 4 in the niche 3 of the housing. The sealing is carried out by the screen 11 of the searchlight with a sealing cord along the closed circuit of the groove 5 of the housing 1 as a response element of the closed circuit of the screen. In the case of using an external power source, the latter is fixed on the rear side of the boss 6. To enter the power cable of the mains or external power source, use hole 7, to ground the device - hole 8. The fastening bracket 16 is fastened to elements 9. In case of using solid-state semiconductor sources of monochrome light previously on the inner surface of the screen is applied a layer of phosphor. In addition, the light module can be made using the technology "chip on the board" ("chip-on-board"). The partition 10 between the light compartment and the compartment of the internal power source allows you to independently fill them with a compound.

LED Floodlight works as follows. After applying voltage through the power cable, the power source converts it and supplies it to solid-state semiconductor light sources, the latter begin to emit light, and if the sources are monochrome, the light is converted to white after passing through the phosphor layer on the screen. If the light sources are placed in the foci of the lenses 12 of the modular optics, the emitted light will be narrowly focused. For the formation of other KSS, translucent screens and light modules, or one of them, are selected so that the corresponding desired KSS shift is achieved between the light sources and the foci of the lenses 12 of the modular optics. In this case, the screen may contain both a set of lenses and one lens, depending on the required KSS. In the event of failure of the external power source, the latter can easily be replaced without disassembling the case and a translucent screen and dismantling the spotlight itself.

Claims (8)

1. LED floodlight, comprising a housing of heat-conducting material, having a light module compartment with solid-state light sources of at least one and a power supply compartment, located at the top and bottom, respectively, with a partition between them and combined from the back with a set of longitudinal heat-dissipating ribs; a fastening U-shaped bracket with fastening to the sides of the housing, a translucent screen on the front side of the spotlight with fastening to a reinforced border of the housing, characterized in that the translucent screen is made in the form of modular optics with a set of lenses or one lens, depending on the required force curve light sources of light are located either in the focus of the lenses of modular optics, or with an offset relative to them; the power source is installed either in the compartment of the power source inside the case, or on its back side from the outside according to the lugs provided for this; the spotlight housing has at least one cooling rib protruding beyond the translucent screen; IP67 sealing is inclusively provided by a translucent screen and a sealing cord along the closed contour of the body trough as a response element of the closed screen contour. 2. LED floodlight according to claim 1, characterized in that the light module contains a solid-state semiconductor light source made using chip-on-board technology (chip on the board). 3. The LED floodlight according to claim 1, characterized in that the light module uses solid-state solid-state semiconductor light sources of monochrome light, while the inner surface of the impact-resistant translucent screen is coated with a phosphor, as a result of which the monochrome light is converted to white. 4. The LED floodlight according to claim 1, characterized in that there is at least one convex lens on the translucent screen. 5. LED floodlight according to claim 1, characterized in that there is at least one concave lens on the translucent screen. 6. LED floodlight according to claim 1, characterized in that it has an explosion-proof design. 7. LED floodlight according to claim 1, characterized in that the translucent screen is made of impact-resistant material. 8. LED floodlight according to claim 1, characterized in that the light module and the power source, when placed in the power supply compartment inside the housing, are flooded with a compound.

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