RU180657U1 - LED LAMP - Google Patents

Abstract

The utility model relates to lighting devices using semiconductor light sources and can be used as a stationary lamp for street or indoor industrial lighting, and also used as a spotlight for lighting large open spaces, such as construction sites and stadiums. The technical result of the claimed utility model is improving reliability, improving manufacturability, expanding the possibilities of using the lamp, unifying the attachment points. This result is achieved due to the fact that in the LED lamp, which includes at least one housing-radiator made in the form of an elongated thin-walled profile of heat-conducting material, having an upper cavity closed in cross section with a power source installed in it, and open, formed central shelf and adjoining two side inclined walls with end grooves, in which a protective light-transmitting screen is installed with sealing with a sealing mat rial, the lower longitudinal cavity, mounted with the lower surface of the central shelf LED module, wherein the central shelf has a central longitudinal U-shaped lug, directed upwards; on the side surfaces of the radiator casing, longitudinal heat-conducting fins are made, directed upwards, and on the upper surface there are grooves for installing the fastening elements of the lamp to the support; in addition, the luminaire is equipped with at least two end caps that are sealed with gaskets, a pressure seal is installed on one of the covers, the central shelf and the side walls of the radiator casing in cross section are made of variable thickness, increasing to the places of their joint; the outer side surfaces of the radiator body, including the heat-removing fins, are made with a wavy surface, the fins of the radiator having an alternating height; on the upper surface of the radiator case, symmetrical rectangular horizontally located longitudinal grooves are made; the power source is located on a guide shelf mounted along the corresponding longitudinal grooves of the upper closed cavity of the radiator body; and the end caps are made voluminous, having basing protrusions at the places of tight contact of the caps to the radiator body.

Description

Technical field

The inventive utility model relates to lighting devices using semiconductor light sources and can be used as a stationary lamp for street or indoor industrial lighting, and also used as a spotlight for lighting large open spaces, such as construction sites and stadiums.

State of the art

Known solutions for LED lighting fixtures (analogues), containing at least one housing-radiator from a drawn profile with heat-dissipating ribs, end caps, LED light sources, a protective translucent screen and a power supply placed inside the radiator housing:

- LED street lamp, RU 106335 U1, F21S 13/00, 03/23/2011;

- LED lamp, RU 114506 U1, F21S 8/00, 08/16/2011;

- LED lamp, RU 118397 U1l, F21S 8/00, 02.02.2012;

- street LED lamp, RU 123113 U1, F21S 13/10, 12/20/2012;

as well as LED lamp housings from a drawn profile:

- housing of a modular street lamp, RU 127865 U1, F21S 8/00, 09/13/2012.

These analogues contain in cross-section two closed contours: the contour of light sources formed by the profile of the body and a protective translucent screen; and a power source circuit formed directly by the profile of the lamp housing.

The disadvantage of the above analogues is the insufficient efficiency of the lamp housings as a radiator: approximately the same distribution of the body material (over the cross section) in the area of light sources and away from them leads to the fact that the heat-conducting material at the periphery “does not work” due to the large heat flow path from the sources Sveta.

Known solutions of LED lamps (analogues), containing at least one housing-radiator from a drawn profile with heat dissipating ribs, end caps, LED light sources and a power supply placed inside the housing-radiator, carrying frame:

- modular street LED lamp, RU 163816 U1, F21S 8/00, F21S 13/00, 08/10/2016;

- modular street LED lamp, RU 173002 U1, F21S 8/00, 08/04/2017.

The disadvantage of these solutions is that the combination of the housing of the modular lamp is carried out through the use of a massive supporting frame, which increases the material consumption of the structure as a whole and, accordingly, leads to an increase in the cost of the product, and also that the fastening element to the supporting structures is provided only on the supporting frame. Also, measures to seal the luminaire have not been sufficiently developed - with a long length of the luminaire inside the compartment of the power source, condensation may form due to the pressure difference inside the compartment and outside. The disadvantages include the need for additional machining of the lamp housing for cutting holes in the housing in order to lay the wire connecting the power source to the board with LEDs.

A solution is known for an industrial LED luminaire (RU 88769 U1, F21S 13/10, 11/20/2009), containing at least one drawn profile radiator body with heat dissipating fins located on the side walls of the luminaire and tilted down, end caps, LED light sources and protective translucent screen. This utility model contains in cross section two cavities of a rectangular and trapezoidal shape, between which an LED board is mounted in the grooves.

The disadvantage of the utility model is that there is no partition between the cavities inside the housing for mounting the LED board (the board slides into the groove). This improves the manufacturability of the assembly, but greatly degrades the characteristics of the heat sink from the LEDs, and, therefore, the reliability of the lamp is reduced.

The closest analogue is the LED lamp (RU 173797 U1, F21S 13/00, 09/12/2017), including at least one housing made in the form of an elongated hollow profile made of heat-conducting material, having an upper cavity closed in cross section and installed in power supply unit, and formed by the central shelf and adjoining two side inclined walls with end grooves in which a protective transparent screen is installed, a lower longitudinal cavity with a central longitudinal mounted on it on the central shelf LED module, while the housing is equipped with lower side docking elements, cooling fins, as well as upper mounting elements made with the possibility of fixing the lamp on a support, the central shelf has a central longitudinal hollow protrusion made in the area of the central LED module, on the side inclined walls in LED modules are installed in the lower longitudinal cavity, and the side inclined walls themselves have pairwise placed longitudinal hollow protrusions made in the installation zone and LED modules, wherein one pair of longitudinal hollow projections has cooling ribs on the upper side coupling elements and the other pair of longitudinal projections provided with additional cooling fins.

The disadvantages of the prototype are:

- low characteristics of the heat sink from the LEDs, due to the lack of contact with the surface of the casing-radiator in the area of the light sources on the central LED board - located opposite the U-shaped groove, in addition there is an additional thermal load from the side boards;

- increased material consumption of the lamp housing, due to the non-optimal distribution of the housing material over the cross section, which reduces the ability to efficiently remove heat from light sources;

- to fix the lamp, bolts are used that are installed in the upper T-shaped grooves of the housing, which leads to a point load at the place of fastening of the bolt head and, taking into account the housing material and wall thickness in this place, with its significant value in this area, the structure can be destroyed ;

- the design of the lamp does not provide space for laying the wire connecting the LED board with the power supply. This fact complicates the assembly of the lamp, because there is a need for special laying of the wire, and also leads to the need for additional machining of the radiator body to make a niche for the wire.

The technical result of the claimed utility model is to increase reliability.

Utility Model Essence

The essence of the utility model is the creation of an LED luminaire, including at least one made in the form of an elongated thin-walled profile of heat-conducting material, a radiator case, an upper cavity closed in cross section, with a power supply board installed in it, and open, formed by a central shelf and adjacent to it two side inclined walls with end grooves, in which a protective light-transmitting screen is installed, a lower longitudinal cavity, installed on the bottom the surface of the central shelf with an LED module, while the central shelf has a central longitudinal U-shaped protrusion directed upwards to which the LED module is mounted, longitudinal heat-conducting fins are directed upwards on the side surfaces of the radiator casing, and there are grooves on the upper surface for installation of fastening elements of the lamp to the support, in addition, the lamp is equipped with end caps.

The technical result in terms of improving reliability is achieved by performing the Central shelf and the side walls of the casing-radiator of variable thickness, increasing to the places of their articulation, which leads to the greatest concentration of the casing material in the place of the highest concentration of heat flux. This solution provides a more efficient removal of heat flux from the zone of light sources and transfers it to the peripheral elements of the radiator case without the formation of thermal barriers. This reduces the possibility of overheating of the lamp, and, consequently, increases its reliability.

The same technical result is achieved by performing the lateral outer surfaces of the radiator case, including fins, with a wavy surface, which allows to increase the radiator area and additionally turbolize the air flow, increasing the radiator efficiency. In addition, the radiator fins are made of alternating height, which eliminates the effect of thermal shielding of adjacent fins relative to each other, i.e. eliminate the situation when the ribs mutually heat each other.

Measures to comprehensively seal the lamp are aimed at increasing reliability: the use of sealing material at the junction of the screen and the housing; the use of gaskets between the end caps and the housing; the use of power cable gland; the exception of violation of the structural integrity of the lamp housing by fasteners; the use of a pressure equalization valve in the lamp, which prevents the formation of condensate inside the lamp, and also eliminates the ingress of dust through microcracks.

The casing-radiator of the lamp is made by extrusion, while for this technical solution does not require additional machining, for example, to make holes for laying the wire connecting the power supply board and the LED module, because inside the luminaire there are sufficient clearances for laying the wire between the radiator casing and the end caps, which are made for this purpose and are voluminous and having a dense, through a gasket gasket, adjoining the casing only along the outer contour of the luminaire. At the same time, the end caps have basing protrusions in places of their close contact with the housing, which greatly facilitates the assembly of the lamp, increases its manufacturability and ensures the tightness of internal cavities.

It is also possible to perform a power supply in an open architecture, without using a case in the form of a board with electronic components, placed and based using a guide shelf mounted along the corresponding longitudinal grooves of the upper closed cavity of the radiator case.

For the ceiling, wall and cantilever suspension of the lamp on the upper surface of the radiator casing, symmetrical rectangular horizontally arranged longitudinal grooves are made for using standard DIN-rails.

The use of a DIN rail makes it possible to use the luminaire in an overhead or suspended version using eyebolts. In this case, the distribution and transmission of the external load occurs along the longitudinal grooves evenly along the entire length of the housing.

To install the luminaire on a pillar support, it is possible to use a special bracket on the console, made in the form of a rectangular plate, on the upper surface of which there is a shortened profile of a pipe with one blind wall, having an inverted T-shaped groove on the outside for fastening to the pole console using bolts.

If it is necessary to control the illumination and achieve the required value of the illumination level, it is possible to use the modular principle of the luminaire, which consists in combining several luminaires with the help of the unifying planks of an adjustable swivel bracket. The connecting strips have folding plates, commensurate with the width of the DIN rail, in the amount corresponding to the number of luminaires to be joined, and located at a distance from each other to ensure reliable fastening. The folding plates are placed in the longitudinal grooves of the lamp housing. Fixation and reliable fastening of the folding plates takes place by means of a threaded connection of bolts to riveting nuts mounted in the folding plates, which eliminates the violation of the structural integrity of the lamp housing.

List of drawings

FIG. 1 - LED lamp (isometric view from above);

FIG. 2 - LED lamp (isometric view from below);

FIG. 3 - LED lamp (isometric view from below, a protective light-transmitting screen is not conventionally shown);

FIG. 4 - LED lamp (top, front, bottom; protective light-transmitting screen is not shown conventionally);

FIG. 5 - LED lamp (cross-section A-A; electronic components of the power supply board are not conventionally shown);

FIG. 6 - LED lamp (left view);

FIG. 7 - LED lamp (right view);

FIG. 8 - LED lamp (B-B longitudinal section; electronic components of the power supply board are not conventionally shown);

FIG. 9 - Housing-radiator of the lamp (side view);

FIG. 10 - LED lamp with mounting on DIN rails (isometric view from above);

FIG. 11 - LED lamp with mounting on DIN rails and eyebolts (isometric view from above);

FIG. 12 - LED lamp with mounting on the console (isometric view from above);

FIG. 13 - Two LED luminaires combined according to a modular principle using the connecting strips of an adjustable swivel bracket (isometric view from above);

FIG. 14 - Mounting unit of the LED lamp to the folding plates of the unifying plates of the swivel bracket in longitudinal section;

FIG. 15 - Three LED luminaires combined according to a modular principle using the connecting strips of an adjustable swivel bracket (isometric view from above);

FIG. 16 - Four LED luminaires combined according to a modular principle with the help of combining slats of an adjustable swivel bracket (isometric view from above);

FIG. 17 - Five LED luminaires combined according to a modular principle using the connecting strips of an adjustable swivel bracket (top view in isometry);

FIG. 18 - End cover with a sealing gasket of the LED lamp (inside view).

FIG. 19 - End cover (isometric view).

The list of items in the drawings

1 - Housing-radiator of the lamp;

2 - Closed cavity of the radiator body;

3 - Open cavity of the radiator body;

4 - Central shelf;

5 - U-shaped central protrusion of the Central shelf of the housing-radiator;

6 - Rib of the radiator body;

7 - Mounting grooves of the protective light-transmitting screen;

8 - Protective light-transmitting screen;

9 - Assembly of end caps;

10 - Longitudinal grooves of the radiator case for mounting fasteners;

11 - Longitudinal grooves for basing the guide shelf of the power source;

12 - Power supply board;

13 - Removable guide shelf;

14 - Screw securing the power source to the profile plate;

15 - End cover;

16 - Screw securing the end cap;

17 - Germanovod end cover for laying power wires;

18 - LED module;

19 - LEDs;

20 - Screw for fixing the LED board;

21 - DIN rail;

22 - Eye bolt;

23 - Attachment to the console;

24 - The unifying level;

25 - Swivel bracket;

26 - Folding plates;

27 - Sealing material;

28 - Pressure equalization valve;

29 - a sealing lining;

30 - Riveting nut;

31 - Wire connecting to the power supply network;

32 - Wire connecting the board of the power source and the LED module;

33 - Base protrusions of the end caps.

Utility Model Implementation

The utility model is as follows.

The power supply board 12 is mounted on a removable guide shelf 13. Then, in the closed cavity 2 of the radiator body 1, a removable guide shelf 13 with a power supply board 12 is installed in the longitudinal basing slots 11. An LED module 18 is attached to the lower surface of the central shelf 4 in the open cavity 3 fixed by screws 20 in the area of the U-shaped central protrusion 5 of the Central shelf. Next, the LED module 18 and the power supply board 12 are connected using the wire 32. To ensure dust and moisture resistance, a sealing material 27 is laid in a specially made groove in the mounting area of the protective light-transmitting screen 8 of the radiator housing 1. An open cavity 3 of the radiator housing 1 with a fixed LED circuit board 18 is closed by a protective light-transmitting screen 8 by inserting into the mounting grooves 7.

Before mounting the end caps 15, a pressure balancing valve 28 and a pressure seal 17 are installed on one of them, through which a wire 31 is drawn from the power supply board 12 for connecting to the power supply network. Then, along the outer contour of the end caps 15 adjoining the luminaire, a sealing gasket 29 is placed along the base protrusions 33. After that, the end caps 15 are mounted along the base protrusions 33 on the lamp and fixed with screws 16.

After the installation of the main elements of the luminaire is completed, the installation, depending on the application, of the luminaire mounting element (DIN rail 21, eyebolt 22, mounting element on the console 23) to the support is carried out by inserting the mounting 10 into the base grooves.

If it is necessary to combine several fixtures, the connecting strips 24 of the rotary bracket 25 are used. In this case, the mounting of the fastener is carried out as follows: the folding plates 26 of the two connecting strips 23 are inserted into the mounting grooves of the required number of 10 combined fixtures from different sides and fixed with bolts to the corresponding riveting nuts 30 mounted in the folding plates at a distance equal to the length of the swing arm 25.

The lamp operates as follows. When the luminaire is connected to the mains, the power source 12 converts the input voltage and supplies it to the LED module 18, the LEDs 19 begin to emit light, illuminating the surrounding area, while the heat is released, which is perceived by the central shelf 4 of the radiator housing 1, is transferred to the remaining parts body and scattered in space mainly due to the longitudinal heat-dissipating ribs 6.

Claims (5)

1. LED lamp, including a radiator case made in the form of an elongated thin-walled profile made of heat-conducting material, having an upper cavity closed in cross section, with a power source installed in it, and open, formed by a central shelf and adjacent to it with two side inclined walls with end grooves in which a protective light-transmitting screen is installed with sealing by means of a sealing material, a lower longitudinal cavity, with a central surface mounted on the lower surface the neutral shelf with an LED module, while the central shelf has a central longitudinal U-shaped protrusion directed upwards; on the side surfaces of the radiator casing, longitudinal heat-conducting fins are made, directed upwards, and on the upper surface there are grooves for installing the fastening elements of the lamp to the support; in addition, the luminaire is equipped with two end caps that are sealed with gaskets, a pressure seal is installed on one of the covers, characterized in that the central shelf and the side walls of the radiator body in cross section are made of variable thickness, increasing to the places of their joint; the outer side surfaces of the radiator body, including the heat-removing fins, are made with a wavy surface, the fins of the radiator having an alternating height; on the upper surface of the radiator case, symmetrical rectangular horizontally located longitudinal grooves are made; the power source is located on a guide shelf mounted along the corresponding longitudinal grooves of the upper closed cavity of the radiator body. 2. The LED lamp according to claim 1, characterized in that the power source is made in an open architecture in the form of a circuit board with electronic components. 3. The LED lamp according to claim 1, characterized in that a pressure equalization valve is installed on one of the covers. 4. The LED lamp according to claim 1, characterized in that the LED module is equipped with secondary optics. 5. The LED lamp according to claim 1, characterized in that a silicone cord is used as the sealing material.

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