RU2622285C2 - Led industrial lamp - Google Patents

Abstract

FIELD: lighting.

SUBSTANCE: invention is used to illuminate warehouses, production halls, open and closed parking lots, ramps and large corridors, basements and facilities where an increased level of protection from external influences of moisture and dust is required. It consists of a radiator housing made of a heat-dissipating polymer composite, at least one power source, LED modules, and a diffuser. The method is carried out by assembling the main elements of the luminaire, in which the placement of the LED boards is made on the surface of the connector of the diffuser housing along the edges of the housing, the supply source (s) are located in the housing recess of the housing, open in the central part of the connector, and the heat dissipating longitudinal and transverse ribs are made only directly at the heat radiation sites - on the edges of the case opposite the installation locations of the LED modules; hermetic inputs are located on the front and back of the body, which allows you to "hide" them within the dimensions of the luminaire and reduce the size of the lamp in the field, and exclude protruding parts, in addition, if necessary, it allows to lay the power cable that supplies a group of fixtures inside Lamp on the central niche of the source (s) of power; for fixing the fixture there are U-shaped brackets mounted on the corresponding grooves made on the outer side surface of the central niche of the case, which allows a quick installation and dismantling of the luminaire.

EFFECT: increasing the reliability; decreasing the material consumption, mass-dimensional dimensions of the luminaire; simplifying the design, reducing labour intensity of production; reducing the cost and costs of installation and operation.

2 cl, 7 dwg

Description

Technical field

The invention relates to the field of lighting, and in particular to lighting devices for fixed installation, using semiconductor point light sources (LEDs) arranged in a row or strip. It is used for lighting warehouses, production halls, open and closed parking lots, ramps and large corridors, basements and in facilities where an increased level of protection against external effects of moisture and dust is required. It is an alternative to widespread industrial luminaires on fluorescent lamps such as LSP 2 × 36 Iceberg.

State of the art

The prior art in this area can be enlarged can be represented by the following groups of solutions:

1. LED lamps based on traditional lamps with the replacement of light sources by LED. They contain a housing that is closed on top by a diffuser with placement inside light sources and lighting fixtures.

a. A well-known analogue, a representative of the group, LED lamp LSP Iceberg 43, for example [www.electro-trader.ru/view-product.php?id=37], [http://zaopmz.ru/index.php?id=1195] . Installation of LED modules (LED “rulers”) in such lamps is made directly on the metal plate of the fixture of the lamp by means of glue or riveting.

b. Known for a more advanced analogue, a lighting device [patent RU 77024 U1, IPC F21V 31/00, dated 05.06.2008], equipped with an additional radiator.

The disadvantage of the group is due to the fact that the luminaires were originally designed for luminescent light sources and do not take into account the operating characteristics of LED light sources. So, for example, the heat generated during operation of the LEDs remains inside the enclosed space of the lamp, which negatively affects its reliability.

2. LED luminaires based on drawn aluminum profiles. They contain an extruded case, a diffuser, side covers, light sources and lighting fixtures [patent RU 116201 U1, IPC F21S 8/00, 08/15/2011], [patent RU 114506 U1, IPC F21S 8/00, dated 16.08. 2011], [patent RU 127865 U1, IPC F21S 8/00, dated September 13, 2012]. The luminaire housing has external heat-dissipating ribs, thus eliminating the problem inherent in the first group.

The disadvantages of the group are: adverse operating conditions of the power source, since the latter is located in a closed cavity and is located directly opposite the LED module board on their common wall or in close proximity to it; inefficient use of the casing material (aluminum alloy), due to the extrusion of the casing, which requires the organization of closed circuits to create the rigidity of the casing, and, as a result, the cost of the luminaire and increased requirements for load-bearing suspension structures of the luminaires. Especially this tendency manifests itself with an increase in the length of the lamp.

The most significant drawback is the implementation of the housing of the lamp made of aluminum alloy. In most cases, the absence of conditions for active cooling of the luminaire body, thermal "barriers" of heat transfer from light sources (LED-board-case-surrounding space) do not allow the efficient use of the heat-dissipating abilities of aluminum alloys in the "case-environment" system. So, it is known [Krivatkin Α., Sakunenko Yu. Heat-dispersing plastics - a challenge to aluminum, Semiconductor Lighting Journal No. 1, 2010], that with natural convection, the range of the effective value of the coefficient of thermal conductivity lies in the range of 5-10 W / (m⋅K). In the same place, the feasibility of using LED housing lights from the TRPC heat-scattering polymer composite as "thermal interfaces" is substantiated. At the same time, the specific gravity of the material is 60% less than that of aluminum alloys, which allows to reduce the weight of the lamp as a whole. Therefore, as a third group of solutions, luminaires having a housing made of TRPK are considered.

3. Lamps, the housing of which is made of (TRPK). Known LED lamps [patent RU 117575 U1, IPC F21S 13/00, from 11.01.2012], [patent RU 139714 U1, IPC F21S 2/00, from 23.10.2012], characterized in that the function of the lamp housing is performed by a heat dissipating radiator polymer composite. The design of the luminaires does not allow their use in the considered area of application.

Thus, the analysis of the selected groups of solutions allows us to form a search area for technical solutions of luminaires as a material for the housings used by TRPC. Moreover, the design of the fixtures is determined by the conditions of its operation and the scope. Because casting is used as the manufacturing method, this allows you to remove restrictions on the shaping of the housing surfaces characteristic of the extrusion method.

The technical task of the claimed invention:

1. Improving the reliability of the lamp;

2. Decrease in material consumption, mass and overall dimensions of the lamp;

3. Simplification of the design of the lamp, reducing the complexity of manufacturing;

4. Reducing the cost of the lamp and the costs of its installation and operation;

5. Expanding the functionality of the lamp.

SUMMARY OF THE INVENTION

The essence of the claimed invention is determined by the following provisions:

The lamp consists of the following main elements:

- a housing with heat-dissipating fins, closed on top with a diffuser, with a power source (s) installed inside the lamp, LED modules;

- the housing is molded from a heat-dissipating polymer composite, has a central niche for installing the power source (s) and the surface of the connector at the edges of which the LED module boards are mounted. The installation sites of LED modules on the rear side have longitudinal and transverse heat-dissipating ribs, and the ribs are made only in the places of installation of the boards and are adjacent to the rear sides of the niche of the power source (s). A groove for laying the sealing material is made along the contour of the surface of the connector;

- the trough-shaped diffuser is made of impact-resistant material, for example, polycarbonate, the inner surface of which is reinforced with longitudinal and transverse ribs. A protrusion is made along the contour of the diffuser, in accordance with the grooves for laying the sealing material of the lamp housing;

- on the front and rear parts of the housing from the outside, ledges are made for placement of cable glands in them.

The technical result is achieved:

- the implementation of the housing from TRK. Effect: reduction in mass, material consumption, the possibility of free shaping;

- the layout of the main elements of the lamp, in which:

○ LED boards were placed on the surface of the housing and diffuser on the edges of the housing, the power supply (s) are located in the central housing niche open on the surface of the connector, and the heat-dissipating longitudinal and transverse ribs are made only directly at the places of heat radiation - along the edges of the housing opposite the installation LED modules;

○ ledges are made on the outside on the front and rear parts of the case, and a hole for the power cable’s pressure seal is made on the side of one of them, and a hole under the pressure seal’s hole is made on the opposite side to release the power cable when it is laid in the central housing niche, the pressure glands in the ledges do not go beyond the size of the lamp, which allows you to "hide" the pressure gland (s) within the dimensions of the lamp and reduce the dimensions of the lamp in the field of operation, as well as exclude protruding parts, except e addition, if necessary, it allows the power cables feeding the group of lamps, the lamp inside the central recess of the source (s) power through the lamp;

○ special U-shaped brackets are provided for fixing the lamp, mounted on the corresponding recesses made on the outer side surface of the central housing niche.

Technical result:

○ reduction of heat load on the power source (s); o reducing the thermal load on the LEDs;

○ efficient use of heat dissipating surfaces of the case (the surface area is increased where it is needed - in the places of installation of LED boards, which is important for cases made of TRPK, since the thermal conductivity is several times lower and, accordingly, the rate of heat redistribution over the case, compared with aluminum alloys) ;

○ increase in strength and rigidity, anti-vandal characteristics of the lamp due to the longitudinal and transverse stiffeners of the body and diffuser;

○ reduction of the labor intensity of the assembly of the lamp: the installation of LED modules, power supply (s), connecting wires is carried out in one common area;

○ reducing the complexity of installation and maintenance, increasing maintainability: for maintenance / repair it is enough to free the lamp from the U-shaped brackets and remove the diffuser;

○ reduction in the number of power cable of a group of fixtures when laying it inside the fixture.

The total technical result: increased reliability, reduced cost.

To expand the functionality of the lamp, it provides mounting points for different types of LED modules and power supplies.

List of drawings

The invention is illustrated by the graphic materials presented in FIG. 1-7:

FIG. 1 - isometric lamp housing (a - top view, b - bottom view);

FIG. 2 - transverse section of the lamp (the seal is not shown conventionally);

FIG. 3 - lamp in isometric view from above;

FIG. 4 - lamp in isometric view from above (diffuser conventionally not shown);

FIG. 5 - lamp top view (a), side (b), bottom (c);

FIG. 6 - front and rear parts of the lamp in isometry (increased);

FIG. 7 - diffuser of the lamp in isometry (bottom view).

The list of items in the drawing

1 - housing-radiator of the lamp;

2 - diffuser;

3 - stiffening ribs of the diffuser;

4 - LED module;

5 - power source;

6 - fastening screw;

7 - a groove for placement of a sealant;

8 - U-shaped mounting bracket;

9 - heat dissipating fins of the radiator body;

10 - LED;

11 - the central niche of the power supply housing;

12 - side surfaces for mounting LED modules;

13 - additional attachment points for LED modules and power supplies;

14 - a hole for a pressure seal;

15 - pressure seal;

16 - a ledge housing the location of the pressure seal (s);

17 - boss of the housing fastening unit;

18 - punching for drilling a pressure seal opening;

19 is a protrusion of the diffuser configured under the groove of the housing.

The implementation of the invention

The invention is as follows:

The power supply source (s) 5 are mounted in the central niche 11 of the power sources and fixed with screws 6. At the edges 12 of the case, LED modules 4 are mounted, fixed with screws 6. Next, the LED modules 4 and power source (s) are connected 5. On one side of the case (front or rear) through the pressure seal 15, the power supply cable of the lamp is inserted into the central niche 11, it is connected to the power source (s) 5. In the case of using the central niche 11 for laying the power cable, for example, to power the group fixtures lined up in a line, the output of the latter is carried out through the cable entry from the opposite side. For these purposes, on one of the walls (front or rear) in the case there is a hole 14 of the hermetic inlet, and on the opposite side, punching 18 is made to drill a hole for another hermetic inlet for the output of the power cable. To ensure dust and water tightness, a sealing material is laid in a specially made groove 7 along the body contour. At the end of installation, the luminaire is closed by a diffuser 2 with stiffeners 3 and fixed by screws 6. The diffuser is based and sealed by a protrusion 19 having a contour similar to a housing groove.

For fastening the fixture, U-shaped brackets 8 are used, mounted in the housing along the corresponding recesses.

The lamp operates as follows. When the luminaire is connected to the mains, the power source 5 converts the input voltage and supplies it to the LED modules 4, the LEDs 10 begin to emit light, illuminating the surrounding area, and heat is released, which is dissipated mainly due to the longitudinal and transverse heat-dissipating ribs 9. Depending for lighting purposes and the required conditions, the lamp is equipped with at least one power source 5 and the corresponding set of LED modules 4 and at least one pressure lead 15.

Claims (2)

1. Industrial LED lamp, comprising a radiator housing made of a heat-dissipating polymer composite, at least one power source, at least one pressure seal, LED modules, a diffuser, characterized in that the LED boards are arranged on the surface of the housing connector and diffuser at the edges of the housing ; the power source (s) are located (s) in the central housing recess open on the surface of the connector, and the heat-dissipating longitudinal and transverse ribs are made only directly at the places of heat radiation - along the edges of the housing opposite the installation sites of LED modules; ledges are made on the outside on the front and rear parts of the case, and on the side of one of them a hole is made for the power cable’s hermetic inlet, and on the opposite side there is a punch under the hermetic opening for the cable to be released when it is laid in the central housing niche, in ledges do not go beyond the size of the lamp; for fixture mounting, U-shaped brackets are provided, mounted on the corresponding recesses made on the outer side surface of the central housing niche; a groove for laying the sealing material is made along the surface contour of the housing connector; the trough-shaped diffuser is made of impact-resistant material, the inner surface of which is reinforced with longitudinal and transverse ribs, and a protrusion is made along the contour of the diffuser, in accordance with the grooves of the lamp housing. 2. The lamp according to claim 1, characterized in that it contains attachment points for different types of LED modules and power supplies.

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