RU2761180C2 - Explosion-proof led lamp and light-emitting element for it - Google Patents

Abstract

FIELD: light engineering.

SUBSTANCE: invention relates to light engineering, namely to explosion-proof lighting devices; it is intended for use in any conditions, both indoors and in open spaces, to provide general lighting, including in environments with a high content of explosive and flammable gases, dust and moisture. An explosion-proof LED lamp contains a light-emitting element including an explosion-proof case base coupled with a translucent lampshade with the formation of a closed volume and at least one LED emitter installed in it on the base, as well as a power supply unit connected to the LED emitter by means of a current supply, wherein the case base of the light-emitting element is additionally equipped with an explosion-proof breathing valve, while the translucent lampshade is made in the form of a removable cover connected to the case base by means of an explosion-proof threaded connection. The power supply unit is equipped with an isolated case, and couplings of case elements of the light-emitting element and the power supply unit, as well as the LED emitter with the case base and the power supply unit, are made detachable.

EFFECT: increase in the efficiency of heat removal with the possibility of using high-power LEDs in the design, as well as increase in the maintainability of the structure.

25 cl, 4 dwg

Description

Purpose and scope

The group of inventions relates to lighting engineering, namely to explosion-proof lighting devices, and is intended for operation in any conditions, both indoors and outdoors, to provide general lighting, including in environments with a high content of explosive and flammable gases, dust and moisture.

Prior art

Known "Circular light signal light", containing a housing with a protective cap (diffuser), installed in it on the holder of several groups of light-emitting diodes, and the LEDs are made in groups on the sections of the side faces of the hollow pyramid and are oriented with optical axes perpendicular to the specified faces (Patent for invention RU No. 2153623, IPC F21S 2/00, F21S 8/10, F21W 111: 06, F21W 101: 12).

An explosion-proof LED lamp is also known, consisting of a housing and a diffuser, several groups of light-emitting diodes, while the LEDs are made in groups on the sections of the lateral faces of a hollow pyramid mounted on a holder, and are oriented with optical axes perpendicular to the indicated edges, while unpackaged surface-mounted LEDs are used, which installed on boards, and the dimensions of the boards correspond to the dimensions of the side faces of the pyramid, and the holder is made in the form of a hollow structure, the base is connected to the mounting disk, and the pyramid, the holder and the disk are made in the form of a module (Application for utility model No. 2012144493, IPC F21S 8/00 , F21S 8/08, F21S 8/10).

Known protected light device on high-power LEDs (Patent for invention RU No. 2392538, IPC F21V 13/14), which also has an explosion-proof design, containing a protected shell in the form of a body made of heat-conducting material with an optically transparent protective cap, with a compact LED emitter installed inside on powerful LEDs, assembled in thermal contact on flat petals, forming a hollow polyhedron-cooling radiator, which is in thermal contact with one or more additional cooling radiators, one of which divides the protected shell of the device into two compartments isolated from each other. One of them is made explosion-proof with installed means of current supply and an electronic converter of the supply network, assembled on a board filled with a heat-conducting compound.

Known explosion-proof LED lamp (Patent for utility model RU No. 101149, IPC F21V 15/00), equipped with a light-emitting element, including an explosion-proof base of the housing coupled with a translucent shade, with the formation of a closed volume and installed on the base of the LED emitter, as well as a power supply connected to the LED emitter by means of a current supply. The luminaire is made in a metal case with an outlet covered with transparent polycarbonate with LEDs assembled in it and having an insulated compartment in which a power supply and control unit is installed, filled with an electrically insulating polymer compound, and a cable gland for connecting the luminaire to the mains. This decision on a set of essential features can be taken as a prototype.

The main disadvantage of the above known devices is low operational reliability due to the low efficiency of heat removal into the environment, the impossibility of meeting the requirements for operation in a wide range of operating temperatures, the spread, which usually ranges from -60 to + 60 ° C, as well as a low level of maintainability due to the impossibility of replacing a failed structural element (driver, LED element, etc.) in the field without damaging the housing and frame structures of the luminaire, which significantly reduces the operational characteristics of the equipment.

The essence of the invention

The technical problem to be solved by the claimed group of inventions is to propose a design for an explosion-proof LED luminaire that is easy to use and with improved thermophysical characteristics.

The technical result achieved by the claimed group of inventions is to increase the operational characteristics, which consist in increasing the service life of the lamp by increasing the efficiency of heat removal, with the possibility of using high-power LEDs in the structure, and increasing the maintainability of the structure.

The claimed technical result is achieved by using an explosion-proof LED lamp containing a light-emitting element, including an explosion-proof base of the housing coupled with a translucent shade, with the formation of a closed volume and installed in it on the base, at least one LED emitter, as well as a power supply connected to the LED emitter by means current lead, which differs from the prototype in that the base of the body of the light-emitting element is additionally equipped with an explosion-proof breathing valve, while the translucent cover is made in the form of a removable cover connected to the base of the body by means of an explosion-proof threaded connection.

In a preferred embodiment of the claimed invention, the explosion-proof breathing valve is provided with an explosion-proof gap between the structural elements, with the possibility of preventing the transmission of an explosion into the atmosphere, and the LED emitter is equipped with a removable holder equipped with means of attachment to the base of the body of the light-emitting element.

In this case, in one of the possible embodiments of the claimed invention, the explosion-proof luminaire can be additionally equipped with at least one removable secondary optics means placed in the space between the cover with the translucent shade and the LED emitter of the light-emitting element.

In one preferred embodiment, the power supply is insulated from the base housing of the light-emitting element and is provided with a separate explosion-proof housing.

In a possible embodiment, the power supply body is connected to the outer surface of the base of the light-emitting element body by a detachable connection, and the connection of the base of the light-emitting element body and the power supply body may be threaded and provided with a bracket.

In yet another possible embodiment, the power supply housing is provided with current transmission means compatible with the power supply and current leads of the light emitting element.

In this case, in another possible embodiment of the claimed invention, the power supply housing can be equipped with at least two current transmission means compatible with at least two light-emitting elements, and the power supply is additionally equipped with a heating element.

The claimed technical result is also achieved by the use of a light-emitting element of an explosion-proof LED lamp, including an explosion-proof base of the housing coupled with a translucent shade, with the formation of a closed volume and installed on the base with at least one LED emitter equipped with current lead-in means, which differs from the prototype in that the base of the body is additionally equipped with an explosion-proof breathing valve, while the translucent cover is made in the form of a removable cover connected to the base of the body by means of an explosion-proof threaded connection.

In this case, the breathing valve is preferably provided with an explosion-proof gap between the structural elements, with the possibility of preventing the transmission of an explosion into the atmosphere.

In one of the possible embodiments of the invention, the explosion-proof breathing valve is made in the form of a sleeve and a shaft, located coaxially with an explosion-proof gap between adjacent surfaces. Whereas in other possible embodiments, the explosion-proof breathing valve can be made in the form of a sleeve filled with compressed particles made of impact-resistant material, or filled with compressed wire made of impact-resistant material.

In another possible embodiment, the sleeve of the flameproof breathing valve can be integrated into the base of the housing.

In another embodiment of the invention, the sleeve can also be made removable, mating with the base of the body by a threaded connection, which, in a possible embodiment, can be made explosion-proof.

According to the claimed invention, the LED emitter is preferably provided with a removable holder provided with means of attachment to the base of the housing.

In this case, in a possible embodiment, the holder is provided with threaded fastening means adjacent to the body.

In yet another preferred embodiment, the light-emitting element can be additionally provided with at least one removable secondary optics means located in the space between the cover with the translucent shade and the LED emitter.

In a possible embodiment, the housing base can be equipped with an explosion-proof electrical connector of the LED emitter with a power supply, made with the possibility of a quick-disconnect connection by means of a current lead with one LED emitter. In this case, the LED emitter can be made in the form of a single LED or in the form of a modular structure, in the form of a set of LEDs.

Brief description of the drawings.

The claimed group of inventions is illustrated by drawings, where:

fig. 1 - section of an explosion-proof LED luminaire;

fig. 2 - examples of the design of a flameproof breathing valve: a) in the form of a sleeve with a coaxially mounted shaft; b) in the form of a sleeve filled with compressed particles of impact-resistant material; c) in the form of a sleeve filled with pressed wire made of impact-resistant material;

fig. 3 is an example of a constructive solution for installing a sleeve of an explosion-proof breathing valve into the base of the body of the light-emitting element: a) by means of a threaded connection; b) the bushing is integrated into the base of the body;

fig. 4 is an example of the implementation of the connection to the light-emitting elements of the power supply unit equipped with multiple current transmission means.

At the same time, the following positions are indicated in the drawings:

1 - light-emitting element;

2 - power supply

3 - LED emitter (LED),

4 - LED emitter holder,

5 - the base of the body of the light-emitting element,

6 - cover of the body of the light-emitting element;

7 - translucent shade;

8 - explosion-proof breathing valve;

9 - power supply case

10 - cover of the case box of the power supply unit;

11 - secondary optics;

12 - threaded fastening of the LED emitter with a holder to the base

13 - bracket;

14 - means of current transmission, in the form of a terminal block;

15 - threaded fastening of the power supply to the case box;

16 - electrical connector of the LED emitter with the power supply unit;

17 - explosion-proof screw connection of the cover and base

18 - line of wire communication (conductor)

19 - heating element

20 - explosion-proof electrical connection of the power supply unit with the LED element.

It should be noted that the accompanying drawings illustrate only some of the most preferred embodiments of the group of inventions and cannot be considered as limiting its content, which includes other embodiments.

Feasibility of the invention.

As shown in FIG. 1 of an example of implementation of the claimed group of inventions, an explosion-proof LED lamp consists of a coupled light-emitting element 1 and a power supply unit 2, each of which is made in an independent housing design. In this case, the light-emitting element 1 is equipped with an explosion-proof base 5 of the element body and a cover 6, equipped with a translucent shade 7, made, for example, of borosilicate glass, forming a closed cavity, in which on the base 5 the LED emitter 3 is fixed with a detachable connection, equipped with a holder 4. Mounting 12 of the LED emitter to the base, as shown in FIG. 1 of the exemplary embodiment is made threaded and carried out by attaching the holder 4 to the corresponding fastening elements 12 located on the adjacent surfaces of the base 5 of the body. The LED emitter can be either a single LED fixed to the holder or a modular structure in the form of a set of LEDs forming a planar (panel) or spatial (volumetric) structure fixed to the holder. The LED emitter is equipped with current lead-in means, made in the form of an explosion-proof electrical connection 20, including electrical connectors 16, for example, in the form of terminals or a detachable contact pad, providing its quick-disconnect connection to the power supply unit 2.

The base of the explosion-proof housing of the light-emitting element is equipped with an explosion-proof breathing valve 8, made of shock-resistant material (plastic, metal, etc.), which provides free air circulation in normal operation and equalization of pressure inside and outside the housing, and in the case of ignition of an explosive mixture inside the luminaire preventing the explosion from spreading to the environment. To achieve this result without significantly increasing the dimensions of the luminaire and complicating its design, in the shown in the drawings, Fig. 1-3 embodiments, the explosion-proof breathing valve is made at least of two parts of the structure located relative to each other, with an experimentally determined explosion-proof gap, preventing the transfer of the explosion into the atmosphere. For example, in private embodiments of the claimed group of inventions, an explosion-proof breathing valve can be (but not limited to): made in the form of a sleeve and a shaft (Fig.2a), or a sleeve filled with compressed particles of impact-resistant material (Fig.2b), or a sleeve filled pressed wire made of impact-resistant material (Fig. 2c). In this case, the sleeve can be made removable and connected to the body by means of a threaded connection (Fig. 3a), preferably explosion-proof, or be integrated into the body (Fig. 3b)).

The use of an explosion-proof breathing valve in the design of a light-emitting element and an explosion-proof LED luminaire prevents condensation or frost formation inside the explosion-proof LED luminaire by constantly removing warm air and moisture, and, accordingly, helps to equalize the pressure, humidity and temperature of the air outside and inside the luminaire, thereby ensuring increasing the efficiency of heat removal, with the possibility of using high-power LEDs in the design and increasing the service life of the product as a whole, by reducing the risk of destruction of the lamp or its failure due to corrosion caused by a violation of the operating mode (excessive humidity, pressure, etc. .).

As shown in FIG. 1 of an exemplary embodiment, the LED emitter 3 is mechanically attached directly to the base 5 of the lamp housing by attaching the emitter holder 4 to the base with a threaded fixture 12, which, for example, can be a screw fixture. At the same time, the electrical connection of the LED emitter to the power supply is carried out using the connector 16 through the explosion-proof connection 20, which, together with the possibility of dismantling the cover 6 along the explosion-proof threaded connection 17 with the base 5, makes it possible to quickly disconnect the LED emitter from the power supply, due to the use of quick-disconnect electrical connections, and replacement of the LED emitter 3 or its components in the field without dismantling the luminaire, thereby significantly increasing the maintainability of the structure and its service life. Obviously, the process of assembling the luminaire after dismantling its structural elements or replacing the LED emitter can also be carried out in the field, without the use of special means for its implementation.

The space under the glass of the translucent shade 7, in addition to placing the LED emitter in it, also allows placement of the secondary optics 11, which is also removable (not shown in the drawings) and can be detached to provide access to the LED. The connection can be screw, snaps, groove, or any other detachable attachment known in the art. The possibility of installing removable elements of secondary optics allows you to optimize the distribution of light, providing various types of light distribution curves without changing the design of the body and lamp shade, which increases the flexibility of solving technical problems, performance characteristics, and has an effect on increasing the efficiency of heat transfer and the service life of the product.

In the illustrated FIG. 1 of the exemplary embodiment, according to the claimed group of inventions, the light-emitting element 1 and the power supply 2 (driver) of the LED emitter 3 are structurally spaced and provided with separate housings, forming a modular structure of the lamp structure, where the housing of the light-emitting element consists of a base 5 and a cover 6 associated with them with a translucent shade 7, and the driver body 9 is equipped with a lid 10 detachably mated with it. The modules formed in this way: a light-emitting element and a power supply unit, are electrically connected to each other by means of electric communication lines, for example, a wire connection 18 (conductor), and can be placed at a distance of up to 100 m from one another, or linked to each other, forming a complete product. As shown in FIG. 1 of an embodiment, for their combination, a bracket 13 can be used, which makes it possible to mount the luminaire at the place of its operation with a given angle of inclination. Thus, this technical solution provides, on the one hand, the isolation of the driver from the thermal effect of the LED emitter, on the other hand, ensures the modularity of the luminaire assembly, i.e. connection to one driver of two or more light-emitting elements (Fig. 4), which leads to simplification of equipment maintenance and an increase in its maintainability, due to the possibility of quick replacement of the power supply unit (driver) in the field. In the cases of the formation of a complete product (Fig. 1), this effect is achieved due to the mechanical fastening of the power supply 2 (driver) to the housing 9 by means of a threaded fastener 15, which, for example, can be screw fastening, and the electrical connection to the lamp ( for any option of placing the power supply) is provided by means of a current transfer means, for example, a terminal block 14. The connection of the power supply to the LED emitter is carried out by supplying the current lead of the power supply to the electrical connectors of the LED emitter 16 through an explosion-proof connection 20, which provide fast switching of the electrical connection. The possibility of performing the power supply unit in a fixed removable way in an insulated case, equipped with a removable cover and structurally and electrically connected in a detachable manner with the light-emitting element, provides the possibility of replacing or repairing the power supply unit in the field without the need to completely dismantle the LED lamp, which significantly increases the ease of use of the product, its maintainability and service life.

As shown in FIG. 1 to the exemplary embodiment, the power supply unit 2 is additionally equipped with a heating element 19, which makes it possible to significantly expand the possibilities of operating the lamp, due to the possibility of using an LED lamp in an unlimited range of negative temperatures. Any heater known in the art, for example, a heating element, can be used as a heating element.

Thus, the design of the luminaire and the light-emitting element is collapsible, modular and equipped with a breathing valve, provides a significant increase in the operational characteristics of the product, by increasing the efficiency of heat removal, increasing the service life of the product and its maintainability.

Claims (25)

1. Explosion-proof LED luminaire containing a light-emitting element, including an explosion-proof base of the housing, coupled with a translucent shade, with the formation of a closed volume and installed on the base, at least one LED emitter, as well as a power supply connected to the LED emitter by means of current supply characterized in that the base of the body of the light-emitting element is additionally equipped with an explosion-proof breathing valve, while the translucent cover is made in the form of a removable cover connected to the base of the body by means of an explosion-proof threaded connection. 2. The lamp according to claim. 1, characterized in that the breathing valve is provided with an explosion-proof gap between the structural elements, with the provision of the possibility of preventing the transmission of the explosion into the atmosphere. 3. The lamp according to claim. 1, characterized in that the LED emitter is provided with a removable holder equipped with means of attachment to the base of the body of the light-emitting element. 4. The lamp according to claim. 1, characterized in that it is additionally provided with at least one removable secondary optics, placed in the space between the cover with a translucent shade and the LED emitter of the light-emitting element. 5. The lamp according to claim. 1, characterized in that the power supply is isolated from the body of the base of the light-emitting element and is provided with a separate body of the power supply. 6. The lamp according to claim 5, characterized in that the housing of the power supply unit is explosion-proof. 7. The lamp according to claim 5, characterized in that the body of the power supply unit is equipped with current transmission means compatible with the power supply unit and current leads of the light-emitting element. 8. The lamp of claim. 5, characterized in that the body of the power supply unit is provided with at least two current transmission means compatible with at least two light-emitting elements. 9. The lamp according to claim 5, characterized in that the power supply unit is additionally equipped with a heating element. 10. Lamp according to any one of paragraphs. 1-9, characterized in that the power supply is made in the form of a removable module, and the case of the power supply is connected to the outer surface of the base of the case of the light-emitting element by a detachable connection. 11. The lamp of claim. 10, characterized in that the connection of the base of the body of the light-emitting element and the body of the power supply is threaded and provided with a bracket. 12. Light-emitting element of an explosion-proof LED lamp, including an explosion-proof base of the housing, coupled with a translucent shade, to form a closed volume and installed on the base by at least one LED emitter equipped with current lead-in means, characterized in that the base of the housing is additionally equipped with an explosion-proof a breathing valve, while the translucent shade is made in the form of a removable cover connected to the base of the body by means of an explosion-proof threaded connection. 13. The light-emitting element according to claim 12, characterized in that the explosion-proof breathing valve is provided with an explosion-proof gap between the structural elements, with the provision of the possibility of preventing the transmission of the explosion into the atmosphere. 14. The light-emitting element according to claim 13, characterized in that the explosion-proof breathing valve is made in the form of a sleeve and a shaft located coaxially with an explosion-proof gap between adjacent surfaces. 15. The light-emitting element according to claim 13, characterized in that the explosion-proof breathing valve is made in the form of a sleeve filled with compressed particles made of impact-resistant material. 16. The light-emitting element according to claim 13, characterized in that the explosion-proof breathing valve is made in the form of a sleeve filled with a compressed wire made of an impact-resistant material. 17. The light-emitting element according to claim 13, characterized in that the sleeve of the explosion-proof breathing valve is integrated into the base of the housing. 18. The light-emitting element according to claim 13, characterized in that the sleeve is removable, mating with the base of the body by a threaded connection. 19. The light-emitting element according to claim 18, characterized in that the threaded connection is explosion-proof. 20. A light-emitting element according to claim 12, characterized in that the LED emitter is provided with a removable holder provided with means of attachment to the base of the housing. 21. The light emitting element of claim 20, wherein the holder is provided with threaded attachment means adjacent to the body. 22. The light-emitting element according to claim 12, characterized in that it is additionally provided with at least one removable secondary optics means placed in the space between the cover with the translucent shade and the LED emitter. 23. The light-emitting element according to any one of paragraphs. 12-22, characterized in that the base of the housing is equipped with a flameproof electrical connector of the LED emitter with a power supply, made with the possibility of a quick-disconnect connection by means of a current lead with one LED emitter. 24. The light-emitting element according to claim 23, characterized in that the LED emitter is made in the form of a single LED. 25. The light-emitting element according to claim 23, characterized in that the LED emitter is made in the form of a modular structure, in the form of a set of LEDs.

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