RU136531U1 - EXPLOSION-FREE LAMP - Google Patents

Abstract

1. Explosion-proof lamp, comprising a housing, a shockproof light-transmitting screen on the front side, a light module, a power supply unit, characterized in that the housing is solid, consisting of two zones: the light module zone in the form of a disk on which the light module board is located and shockproof light-transmitting screen, fixed on the housing by means of fixing bolts on the flange, sealing the zone by pressing the seal with a groove along the reciprocal ring belt in the housing, and the zone of the source unit a power supply made in the form of a rectangular niche projecting to the opposite side in the center of the disk, the disk and the rectangular niche on the back side being combined by a set of transverse and longitudinal vertical ribs, and the light module contains at least one solid-state semiconductor light source. 2. Explosion-proof lamp according to claim 1, characterized in that the solid-cast housing and shockproof screen are made of thick-walled. The explosion-proof lamp according to claim 1, characterized in that the one-piece housing has a hollow hexagon with a thread for connection to the pipe s or to standard lighting fixtures. 4. Explosion-proof lamp according to claim 1, characterized in that hexagonal pockets for nuts are provided in the solid housing on the back of the flange. The explosion-proof lamp according to claim 1, characterized in that the translucent impact-resistant screen is made in the form of a convex-concave lens that smoothly transitions to the flange. Explosion-proof lamp according to claim 1, characterized in that the light module contains a solid-state semiconductor light source, made according to the technology

Description

Technical field

The inventive utility model relates to lighting engineering, in particular to protected and explosion-proof lighting devices using semiconductor solid-state light sources. It is an alternative to the widely used VZG lamp (mainly VZG-200, VZG-300), which allows to reduce operating costs. The device is intended for general lighting of technological objects, explosive zones, in rooms dangerous by dust and gas.

State of the art

There are a number of solutions that are similar in the scope of application of the devices (RU 46333 U1, IPC F21V 25/12 of 02/07/2005; RU 84507 U1, IPC F21V 25/12 of 04/01/2009; RU 2259512 C1, IPC F21V 25/12 of 02/02. 2004; RU 44163 U1, IPC F21V 25/12 of 11/30/2004) using lamps (incandescent or discharge) as a light source and therefore are not considered here.

A known analogue of the claimed device is an explosion-proof LED lamp containing a robust housing, light sources installed inside the housing and the power supply and control unit (RU 54138 U1, IPC F21V 15/00 of 11/23/2005). The scope of this device is somewhat wider than that of the claimed solution, which affects the complexity of the design of the lamp, and, as a consequence, the increase in costs for it.

For the prototype of the claimed utility model adopted device - explosion-proof LED lamp (RU 101149 Ul, IPC F21V 15/00 from 08/30/2010). The lamp comprises a housing with a front wall of impact-resistant transparent material, at least one light source installed inside the housing, and a power supply and control unit. Moreover, the power supply and control unit is installed in an insulated compartment of the lamp housing and is filled with an electrically insulating polymer compound. The disadvantage of this device is that the housing consists of several parts, which affects the increased requirements for its manufacture in order to ensure the reliability of the device. The front wall of the polycarbonate device is closed with a metal grill, which is redundant, provided that the screen is made of shockproof polycarbonate. In addition, it uses LEDs as a light source. The use of chip-on-board technologies (chip (crystal) on the board) and a remote phosphor for light modules can reduce the cost of the product, while maintaining (improving) its light characteristics.

Utility Model Essence

The essence of the claimed utility model consists in the design of the device containing a minimum set of components (solid body, monolithic translucent screen made of impact-resistant polycarbonate (a protective grille is not required), a light module and a power source), which provide lighting functions of the device with the possibility of use in hazardous areas and oriented to the use of various light modules based on solid state light sources.

Explosion protection is provided by a robust housing and impact-resistant polycarbonate, which is achieved by the increased wall thickness of both the housing and the screen in comparison with lamps operating under normal conditions. At the same time, in order to save material and to avoid increasing the dimensions of the luminaire, a trough protruding from the back side is made in a rectangular niche of the housing, in which the power cable is placed. The required gap for the exit of gases from the durable shell is formed by the junction of the housing and the shockproof screen.

The developed design allows the assembly of the lamp, as well as installation with minimal labor. This solution makes it possible to directly install the device directly instead of VZG luminaires without performing additional work on arranging the connection points (rework and adapters are not needed), which is especially important when carrying out large-scale projects for technical re-equipment and technical re-equipment.

The luminaire housing contains a zone for the light module — it is structurally made in the form of a flat round platform bounded around the perimeter by a girdle used to arrange a sealing element in it. The zone is covered by a translucent screen, the central part of which (above the light module) is shaped as a convex-concave lens bounded around the perimeter by a protruding groove (when connected to the body, the groove compresses the seal around the entire circumference of the annular girdle of the body) and then turns into a flat part with the implementation of a flange connection with lamp housing with fixing bolts. To reduce the complexity of assembling / disassembling the screen with the housing, the latter has hexagonal pockets on the boss flange for fixing nuts. The zone for the power source, also located in the central part of the housing directly behind the zone of the light module, is a rectangular niche, at the bottom of which two bosses with screw holes protrude for fastening the power supply unit through an insulating gasket. On the back of the lamp, the housing disk and the protruding rectangular niche combine longitudinal and transverse vertical ribs that perform a heat dissipating function. On the back of the rectangular niche there is a hexagonal element for fixing the lamp to the pipe ¾ or to a standard box. A protrusion with a ground hole is also provided here.

The technical result is expressed in reducing operating costs for the device, reducing the cost of manufacturing the product, as well as eliminating additional costs for the re-equipment of objects when replacing VZG lamps, due to unification under the existing lighting fixtures.

List of drawings

The essence of the utility model is illustrated by figures 1-11:

Figure 1 - lamp explosion-proof front view;

Figure 2 - lamp explosion-proof rear view;

Figure 3 - lamp explosion-proof section (light module with solid-state white light sources);

Figure 4 - lamp explosion-proof section (light module with solid-state sources of monochrome light);

Figure 5 - lamp explosion-proof side view;

6 is a lamp explosion-proof view from the front side in a perspective view;

Fig.7 - lamp explosion-proof view from the back in a perspective view;

Fig - lamp explosion-proof view from the back in a perspective view (fragment, enlarged);

Fig.9 - lamp explosion-proof view from the front side in a perspective view (light transmission screen and light module are conventionally not shown);

Figure 10 - lamp explosion-proof view from the front side in a perspective view (light transmission screen not shown conventionally, light module with solid-state sources of white or monochrome light is shown);

11 is an explosion-proof lamp from the front side in a perspective view (a light transmission screen is not shown conditionally, a light module is shown made on chip-on-board technology (chip (crystal) on a board);

Fig - lamp explosion-proof view from the front side in a perspective view, illustration (light-transmitting screen is not shown conventionally, a light module with solid-state sources of white or monochrome light is shown);

Fig - lamp explosion-proof view from the front side in a perspective view, illustration (a light-transmitting screen is not shown conventionally, a light module is shown made on chip-on-board technology (chip (crystal) on the board);

Fig - lamp explosion-proof view from the front side in a perspective view, illustration (light module with solid-state white light sources);

Fig - lamp explosion-proof view from the front side in a perspective view, illustration (light module made by chip-on-board technology (chip (crystal) on the board);

Fig - lamp explosion-proof view from the front side in a perspective view, illustration (light-transmitting shockproof screen is opaque).

The list of items indicated in the figures

1 - Case;

1-1 - Rectangular housing niche;

1-2 - Boss boss for installing the power supply unit;

1-3 - Chute of the housing for laying the power cable;

1-4 - The protrusion of the housing for external grounding;

1-5 - The annular belt of the housing for sealing;

1-6 - Hollow hexagon with thread for mounting the lamp;

1-7 - Pocket for the nut;

1-8 - Heat dissipating rib of the housing;

2 - power supply unit;

3 - Light module;

3-1 - Holes of the light module;

3-2 - Light source of the light module;

4 - Shockproof light-transmitting screen;

5 - Fixing bolt;

6 - Sealant;

7 - Insulating gasket;

8 - Luminophore layer.

Utility Model Implementation

The lamp is as follows:

A power supply unit 2 is installed in a rectangular niche 1-1 of the lamp housing 1 through an insulating gasket 7 on the bosses 1-2. First, a power cable is inserted into the lamp by means of a pressure seal and connected to the power supply unit 2, while the grounding cable wire is connected to one of the bosses 1-2, and the cable itself is laid in a groove 1-3 specially designed for it. Additionally, the product is grounded from the outside by connecting the grounding wire with a screw connection to the protrusion 1-4, adjacent to the hexagon 1-6 of the fixture of the lamp. Wires from the power supply unit 2 are pulled through the openings 3-1 of the light module 3 and soldered to the corresponding pads of the light module board 3. The light module 3 is connected to the housing 1 by means of screws. Next, a seal 6 is laid in the annular belt 1-5 of the housing, after which the area of the light module is closed by a light-transmitting shock-resistant screen 4 and fixed by bolts 5. The lamp is mounted on a pipe ¾ or on a standard box by means of a threaded connection with a tightening according to hexagon 1-6.

The luminaire operates as follows: the power supply unit 2 is supplied with power, after conversion, the power is supplied to light module 3. When using traditional semiconductor light sources in the light module 3 or a light module with a solid-state light source made using chip-on-board technology (chip on circuit board), the light module emits white light. The radiation pattern is formed after the light passes through a light-transmitting shockproof screen 4. When using solid-state sources of monochrome light in the light module 3, white light is formed after passing through a layer of phosphor 8 deposited on the inner surface of the light-transmitting shockproof screen 4.

Explosion protection of the device is implemented according to the schemes d - flameproof enclosure (the casing and light-transmitting screen are thick-walled, withstanding an internal explosion without deformation, protection is ensured by the gap between the casing and the screen) and m is compound sealing (the power supply unit and the light module are filled with a compound).

Claims (11)

1. Explosion-proof lamp, comprising a housing, a shockproof light-transmitting screen on the front side, a light module, a power supply unit, characterized in that the housing is solid, consisting of two zones: the light module zone in the form of a disk on which the light module board is located and shockproof light-transmitting screen, fixed on the housing by means of fixing bolts on the flange, sealing the zone by pressing the seal with a groove along the reciprocal ring belt in the housing, and the zone of the source unit power supply, made in the form of a rectangular niche projecting in the opposite direction in the center of the disk, the disk and the rectangular niche on the back side being combined by a set of transverse and longitudinal vertical ribs, and the light module contains at least one solid-state semiconductor light source. 2. The explosion-proof lamp according to claim 1, characterized in that the solid body and shockproof screen are made of thick-walled. 3. The explosion-proof lamp according to claim 1, characterized in that the one-piece housing has a hollow hexagon with a thread for connection to the pipe s or to standard lighting fixtures. 4. The explosion-proof lamp according to claim 1, characterized in that in the one-piece housing, hexagonal pockets for nuts are provided on the back of the flange. 5. The explosion-proof lamp according to claim 1, characterized in that the translucent impact-resistant screen is made in the form of a convex-concave lens that smoothly transitions to the flange. 6. The explosion-proof lamp 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). 7. The explosion-proof lamp according to claim 1, characterized in that the light module uses 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. 8. The explosion-proof lamp according to claim 1, characterized in that the shockproof light-transmitting screen is made of a transparent material. 9. The explosion-proof lamp according to claim 1, characterized in that the impact-resistant light-transmitting screen is made of a translucent material. 10. The explosion-proof lamp according to claim 1, characterized in that the impact-resistant light-transmitting screen is made of opaque material. 11. The explosion-proof lamp according to claim 1, characterized in that the shockproof light-transmitting screen is made diffusing.

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