Ceiling fluorescent parabolic luminaire

Invenfia refer! in the field of electricity, namely luminaires with luminescent tubes for ceilings.

We know the ceiling type luminaires [1 .. .4] with parabolic relays in shape! the blinds, which include a metal body, in which all the necessary electrical elements are mounted; parabolic reflector grid! diffuse or catoptric! - focus and focus! light, being located! also in the luminaire body. Reflector grid const! from a parabolic blind, being made! from special elements of form! different !, which are interconnected to form о cellular cell! uniform!. Parabolic blinds, installed in the known ceiling type luminaires, consist mainly (90%) of a liking! aluminum subfloor with the puffin о surface! reflectors catoptric! or diffused!

The bodies of the known luminescent luminaires are made entirely of metal plates, to which by suitable mechanical methods of processing they are given the desirable shape. The luminaire bodies made in box form have a depth of about 10 cm, the upper part! whose is open! the shape of this box or its upper appearance is either a perfect plot, or a rectangular parallelogram, the minimum dimensions of the box are 10x60 cm and maximum 62x160 cm. A box with such dimensions, especially the four sections, is made! in different stages of the model. This process is costly and, respectively, increases the final cost of the parabolic ceiling type illuminator. One of the modeling steps, used by most manufacturers and which considerably reduces the cost and time of realization, is welding or combining the edges on all four edges of the square or rectangular box. At the same time! the use of the metal plate to make the body agreed! the finished product о excessive weight !, what I present! о task! adifional! for decorative ceilings. It also becomes difficult! manipulation in the production and installation process.

Grid grid! of the parabolic reflectors of the luminescent luminaires of the ceiling type represent! о re-made from elements of different sizes, mostly built with pleasure! aluminum subfloor with the puffin о surface! catoptrical! or broadcast. This grill! reticular! const! from a square or rectangular frame, formed by four linear elements, joined together in four angles. The main parabolic elements, which reflect! and focus! light, are proportionate to the number of tubes in the luminaire and are fixed in two! p! rfi opposite the inside of the frame. The elements of the parabolic and non-parabolic transverse blades are placed on two others! frames of the frame and vertically directed towards the main parabolic components, thus creating the reflecting grid. This! grill !, adifional to the concentration and focus of the light, it hides the luminescent tubes of the luminaire for the observer looking at the luminaire from a certain angle. The size of the angle at which the luminescent tubes are not visible depends on the quality of the blinds, becoming one of the main characteristics, according to which it is possible! differentiation of the parabolic luminaires luminaires of the ceiling type of any other and being classified in two! different categories.

In all ceiling-mounted parabolic luminaires to replace the о lamp! or the starter is required! preliminary disassembly! of the blinds made of cross lamellae, described above, to have access to the tubes and starters. To make it possible! dismantling the reflector grille (blinds), headlight! to lock with luminescent tubes of the luminaire, the transversal blades throughout the length are provided with holes. This means c! they are placed exactly under the luminescent tubes to avoid the obstacle I present! the installed tubes, the reflector grid being dismantled! As a result, the parabolic surface is missing beneath the luminescent tubes! reflectors at the same time! о part of the light flow! uneven at the bottom! of the tubes, it is directed! to the flat surface! of the metal support of the illuminator and to the floor, so do not concentrate! and does not focus! in the right way. This disadvantage can be eliminated by placing the luminescent tubes all over! their length, a parabolic reflector. The sectors of the metal body that are not covered by the reflecting grid serve as light reflecting surfaces; because they are in the field of view of the observer, the producers are required to paint entirely in white! the body, which consists! of a pleasure! metal! and which serves as a support for electrical elements, which increases the costs of producing this illuminator.

The problem I solve! the present invention const! in removing the disadvantage he mentioned by creating a luminescent parabolic luminaire for the ceiling, which includes a body (1), some electrical elements placed in it and a system of parabolic reflectors (2,3) with surface! catoptrical! or diffused! for focusing the light emitted by the luminescent tubes (4). Two sides of the body (1), in which the electrical elements are mounted, contain parts from the table! plastic! (6), which are fixed on the main support (5) of the body, which is executed from a board! metallic !, by pressing. Also, in the side shelves of the pieces from the table! plastic! (6) of the body (1) there are executed recesses and projections (9, 10) in which the parabolic reflector system (2,3) is installed, which is removable and which is bordered

MD 2505 C2 2004.07.31 the main parabolic components (2), which focus the light flux, and which are located directly near the base of the body (1) under the luminescent tubes (4), and the reticular grid (3), located above the parabolic components main (2) and under luminescent tubes (4). The reticular grid (3) and the main parabolic components (2) of the removable system are located in the body (1) independently of each other.

For the construction of the body of parabolic luminescent luminaires for decorative ceilings, plastic table pieces are used. These two pieces of plastic table are fixed by the body made of a metal plate with о butter, and not by welding or joining with rivets. Thus, the metal part of the body of the square or rectangular luminaire includes only two of its four side walls.

The fact that two of the four side walls of the luminaire body are not initially mounted, facilitates its configuration for the mechanical connection of the body with three edges, located on the bottom from one end to the other. Such a joint allows the thickness of the metal plate used to make the body from 0.6 mm to 0.4 mm to be reduced. The flexibility of the plastic material, of which two walls of the body are made, facilitates and improves their connection by stamping with the metallic part of the body. On the other hand, the stamping of the metallic details presents some difficulties.

At the same time, the execution of the plastic table pieces with cavities and projections of special shapes makes it possible to install the lattice grid of the parabolic spotlights directly on the side walls, avoiding the use of other additional parts.

Thanks to the use of a removable reflector grille, the efficiency of the ceiling-mounted parabolic luminaire increases. This kind of construction makes the main parabolic elements that concentrate and focus the light become completely independent of the top of the lattice. The main parabolic elements are located under the luminescent tubes having the ideal (curved) parabolic shape for intensifying the light flux. Thanks to these parabolic elements under the tubes there are no holes. If it is necessary to replace the tubes or starters, only the upper part of the reflecting lattice grid is required. In the lower part, independent of the upper one, the main parabolic elements remain untouched, at the same time they do not prevent the disassembly or installation of luminescent tubes or luminaire starters.

The elements of the removable lattice grid are made by the thermochemical treatment of the special thermoplastic film with at least о reflective, catoptric or diffuse surface. In order to obtain a thin thermoplastic film with at least о reflecting surface о very thin membrane (approx. 0.015 mm), it joins with о surface having the highest degree of reflection on a layer of material of greater thickness, the thickness of which is about 0, 10 ... 0.40 mm, such as, for example, polyethylene, polypropylene, paperweight, polyvinyl chloride, etc.

The reduction of the thickness of the metal plate used for the construction of the luminaire body, as well as the use of the thermoplastic material for two side walls, reduces by 20 ... 35% the total weight of the luminaire body, compared to the known luminaire bodies of the ceiling type. At the same time, the ceiling is characterized by the simplicity of handling in the production and installation process.

The thermoplastic material of the reflective lattice grille eliminates the risk of trauma by cutting with sharp edges for people who install the luminaires. In addition, the flexibility of the plastic material gives it durability, excluding the possibility of mechanical pressure in the installation process.

Finally, the lack of holes in the sections of the main elements of the removable lattice grille, which are located directly below the luminescent tubes, allows the use of unpainted galvanized iron plate, because it is completely covered by the reflecting parabolic surfaces. The use of the galvanized tier plate excludes the costs for further painting of the luminaire body, at the same time о such plate is more resistant to corrosion, compared to о ordinary iron plate, painted black.

The present invention allows to reduce the production costs of the body for the elements of the parabolic luminescent luminaires of the ceiling type due to the use of the thermoplastic elements. Thermoplastic parts are mounted by stamping on the body of a metal plate, a process much cheaper than welding or long-lasting riveting, used for all parts of the body if they are made of metal.

Thanks to the use of two additional pieces of plastic table, the thickness of the steel plate is reduced by 40%, which significantly reduces the costs for the construction of the body.

The present invention contributes to the increase of the lighting efficiency of the luminaires by the use of the removable lattice grating, which allows the use of parabolic elements that reflect and direct the light flow. In such a construction, the top of the removable lattice grille serves, in particular, as a protective cover for luminescent tubes, covering them from a certain angle. In case the tubes or the starter are replaced, only the top of the removable lattice grille is disassembled.

The main parabolic elements are located under the luminescent tubes and their parabolic (curved) shape encompasses all the lower part of the tubes, without leaving the hole along the lower part of the

MD 2505 C2 2004.07.31 of the luminaires, as in the case of known luminaires, in which it is necessary to dismantle the unified lattice reflectors. The fact that such openings are missing in the body of the main parabolic elements, but is о reflective surface under luminescent tubes throughout their length, leads to the retention of reflected light, focusing and focusing it directly in the desirable direction. Reducing the thickness of the plate from which the luminaire body is made, using two plastic table pieces! and a thin thermoplastic film with the shear о reflector surface for the creation of the reflector relay leads to a significant reduction! of the weight of the final product - the ceiling type parabolic illuminator. Consequently, the process of producing, installing and operating the luminaire is simple. In addition, for the simplified construction design, the luminaire can be installed on decorative ceilings.

The invention is explained! through the drawings in fig. 1 ... 5, which represent !:

FIG. 1, the overview of the parabolic fluorescent illuminator of the ceiling type with axial connection! with different component parts of it;

FIG. 2, the elements of the parabolic fluorescent illuminator of the ceiling type that axially join;

FIG. 3, cross section! of the ceiling type parabolic illuminator;

FIG. 4, the plastic table pieces! to support the removable reflector grille;

FIG. 5, the table pieces! plastic! to support the upper part of the removable reflector grille.

The luminescent parabolic luminaire for the ceiling, according to the invention, confines a body 1 for the electrical elements and a system of parabolic reflectors 2, 3 for the concentration and focus of the light flux! emitted by the luminescent tubes 4. Body 1 for electrical elements consists! from a main support 5, made with pleasure! metal! and two pieces of table! plastic! 6, which is mounted! in the body by the usual stamping of the metal elements of the main support 5, this process being accomplished in a shorter time, compared, for example, with the duration of welding or jointing by rivets, which, if all four parts of the body 1 would be made of metal, it would be necessary to make it in all four angles of the box.

Graphics of using table pieces! plastic! 6 in the body 1, the main support 5 of the metal plate! inifial is not modified on both sides 7. Thus, it is assured! the possibility of fortifying the base of the support 5 of the body 1 with the ribs 8 and its configuration according to a certain shape along the support 5 from one end to the other.

The system of parabolic reflectors 2, 3, according to the present invention, is executed demountable and const! from the main parabolic components 2, what reflects! and directs the flow of light and which are placed on the table pieces! plastic! 6 of the body 1 spelling of the constructive elements Special 9 executed on all! surface of the illuminator, and from the reticular grid! 3 located! above the main parabolic components 2, which, on the one hand, help! parabolic elements 2 to direct the flow of light, while on the other! part, it is used! to create a pleasant exterior appearance with the formation of multiple reflector levels, which simultaneously conceal the luminescent tubes 4, located in the illuminator. Grid grid! of the parabolic reflector system 2, 3 through the recesses and protrusions 9, 10 is mounted! on the table pieces! plastic! 6.

Splitting the reflector system into two parts allows the upper part to be dismantled! 3 independently of the parabolic components securely fixed 2, located at the bottom of the illuminator. If necessary! the replacement of the tubes or starters in the luminaire, is being dismantled! just the top! 3 of the reflector system 2, 3 headlamp! affect the main parabolic components 2. Thus, the main parabolic components 2, according to the present invention, are placed under tubes throughout! their length and are not insured with groove, having at the same time! о form! parabolic! ideal!, the writing of which creates a directed light flow, improving the efficiency of the illuminator.

Both parts of the parabolic reflector system 2, 3, according to the present invention, constitute a composition of elements of different shapes, made by thermomechanical modeling of a thermoplastic film subfloor with that of the reflector surface. Graphics of the specific low weight of the thermoplastic film, compared to the aluminum, the total weight! of the demountable grid 3 is reduced by 50%. The low weight in combination with the plastic properties of the material reduces the risk of trauma, which could be caused by the sharp edges, during the installation of the luminaire, and the flexibility of the plastic material gives it durability, excluding the possibility of mechanical pressure during the installation.