MXPA99011479A - Lighting device - Google Patents

Abstract

A lighting device comprising one or more light sources placed in respect to a concentrating concave or echelon main reflector, with the light emitted by the light source(s) (10) being reflected by the main reflector (11) so as to create a projected pattern of light to be directed onto a subject to be illuminated, a focusable light being achieved by shifting means capable of displacing or tilting the light source(s) with regard to the optical axis of the reflector. Said shifting means are apt to displace said at least one light source in a direction or at an angle to and from said optical axis (12) of said reflector, in a plane substantially perpendicular to said axis, or to tilt the at least one light source(s). The light source(s) is(are) placed around said optical axis of the reflector and are movable or inclinable in a direction away from the optical axis of said reflector.

Description

LIGHTING DEVICE BACKGROUND OF THE INVENTION The invention relates to the field of lighting in which lighting devices or luminaires are used that comprise one or more light sources placed in relation to a reflector to directly illuminate a target, for example, luminaires used in studies of TV. The light sources of reflectors are well known, which also concentrate or focus the light, thus changing the illuminated angle. This can be achieved in several ways. The most common lighting device of this type is provided with means for moving forward or forward longitudinally along its optical axis, placing the light source inside the reflector, whereby the projected light pattern is varied. . However, these lighting devices have the following disadvantages: -When the light source is advanced to a maximum degree, the end of the lamp may protrude, thereby exposing a possible breakage. In addition and therefore, a percentage of the light emitted by the light source is lost because the reflector no longer captures or reflects it. Moreover, the light source can come into contact with the accessories attached to the front of the reflector. -The housings and focusing systems of the lighting device must be manufactured in a large size to allow the aforementioned movement. -When the light source moves backward, it exceeds the rear limit of the reflector, causing an increasing amount of light to be wasted, since the reflector no longer receives this light and, therefore, can not reflect it forward as you want -When a light source of small size is used and when a light pattern is desired at a large angle, there is a "hole in the middle" since there is no light reflected there. -It has also made lighting devices with two light sources mounted eccentrically inside the reflector and rotated around the optical axis of it. The use of this type of artifacts is very limited, because the variation of the light pattern always projects coaxially in the same way, unevenly around the optical axis. A variation of this type of lighting device has been made in which the rotational movement of two light sources is coupled to a longitudinal movement thereof "back and forth along the optical axis of the reflector, in such a way that The light may be more or less focused, however, its utility is very limited, and lighting devices with multifilament lamps have also been used.The filaments are placed, in this case, in different fixed places inside the lamp so that the Surrounding reflector receives light coming from different angles, thus projecting the light forward in a different way.This system has certain disadvantages and limitations except for the headlights of automobiles, this system is rarely used because: -Lamps must be used of multifilaments. -The light pattern is limited and fixed by the superior number of filaments inside the lamp and its placement. - or varies continuously. Another type of lighting device uses a reflector that has two separate sections with the same optical axis. A lamp is used at each level of the reflector and each section has different optical characteristics and diameter. So when switching between one lamp and another, or both, the lighting makes changes. However, this device is somewhat complicated to produce and its use is rather limited.

The groups of light sources placed around the optical axis of a reflector are also known, but the systems, if they can be focused, do so by changing reflectors or by moving the lamps back and forth longitudinally along the axis - optical. In addition, fixed focus illumination artifacts are known in which the lamp is inserted and held at an angle with respect to the optical axis, in such a way that its base is outside the reflector on the side, instead of on the back, placed light emitting surface of the lamps along the optical axis of the reflector in a fixed position. Thus, there are no mechanisms that vary the lighting. There are fixed overhead lights in the size range of 60 cm x 60 cm, but neither the angle at which they illuminate nor the direction of light can be changed. Attempts have been made to overcome this deficiency by placing known costly elements in front of certain models, for example, grid reflectors to reduce the illuminated angle, and light reflecting grid elements to reflect light towards the side at a fixed angle. These accessories are efficient, expensive and are not adjustable. The union of several lights is well known and much used, but all these accessories are simply composed of a series of individual lights, mounted side by side. Thus, since the angle illuminated by these networks of lights is not adjustable, and given the lack of use of additional mirror reflective surfaces common to all the lights, this means that there is no increase in the light output and that there is no mixing of light in these mirror surfaces. COMPENDIUM OF THE INVENTION The present invention relates to a lighting device that uses a main reflector, and that is capable of varying the projected pattern of light either symmetrically or asymmetrically, and of doing this without moving the source (s). ) of light backwards or forwards longitudinally in the direction of the optical axis of the reflector. Since there is no backward or forward movement of the light source, the depth of the luminaire can be minimized. In addition, the light source (s) can be moved without interference from the accessories placed on its front face. The lighting device according to the invention makes it possible to have a light capable of concentrating at a variable angle of less than 30 ° to more than 100 ° with a very high output and light efficiency. When used with fluorescent lamps, the lighting device of the invention reaches up to 100 candelas per watt, or even more, compared to that of 10 to 30 candelas per watt achieved by other fluorescent lamp devices being manufactured, and that, moreover, they can not concentrate. The lighting device manufactured in accordance with the present invention can be used with one or more lighting sources that are placed in a position to illuminate a concave or stepped concentrator reflector. No individual reflectors are required for each light. It is also possible to have interchangeable illuminating heads and interchangeable reflectors. Moreover, with the invention, ordinary lamps can be used instead of special "bifocal" or "multifocal" lamps. The lighting device according to the invention comprises at least one light source placed in a position for illuminating a main reflector. The light emitted by the light source is reflected by the reflector, in such a way that a projected pattern is created that will be directed to an object that will be illuminated, achieving a light that can be focused through displacement mechanisms capable of moving or tilting. at least one light source, in relation to an optical axis of the reflector- In accordance with an important aspect of the present invention, the displacement mechanisms are suitable for moving a light source at least in one direction towards and from the axis optical reflector, in a plane substantially perpendicular to the axis. According to a specific embodiment of the invention, at least two light sources are placed around the optical axis of the reflector and are movable in a radial direction with respect to the optical axis of the reflector. Preferably, the light sources are placed regularly around the optical axis of the reflector. In accordance with another embodiment of the invention, a fixed light source is placed on the optical axis of the reflector, and used together with other mobile or tilting light sources. According to a further embodiment of the invention, the device comprises at least two light sources and the mechanisms of displacement or inclination that are able to simultaneously move or tilt the light sources. According to a further embodiment of the invention, the lighting device comprises at least two light sources and the movement mechanisms are able to move or tilt the light sources separately. According to a further aspect of the present invention, the movement mechanisms comprise a guide plate having at least one guide groove, through which an extension of the base of at least one light source passes, being placed a cam plate below the guide plate and having at least one cam in collaboration with a base of the light source, the guide plate and the cam plate being capable of a relative rotational movement, with which the base is displaced of the light source in the direction to and from the reflector axis. In accordance with a further aspect of the invention, the guide grooves of the guide plate are rectilinear grooves extending radially from the optical axis of the reflector, and the cams of the cam plate are curved. In accordance with a further aspect of the invention, the cams of the cam plate are slots. In accordance with a further aspect of the invention, the base of the light source is separated into separate sections for each group of one or more light sources, and the movement mechanisms are used to control the inclination of each section, which it is susceptible to lean towards and from the optical axis of the reflector. There are different mechanisms to control the angle of inclination that allow the user to modify the light pattern, by varying the angle, for example, turning a button, operating a lever or by means of an electric motor. According to a further aspect of the invention, the device comprises at least two light sources of a different nature, for example, halogen incandescent lamps, high frequency fluorescent tubes, discharge lamps, electronic flashing tubes. According to a further aspect of the invention, the housing in which the displacement mechanisms are placed can be separated from the reflector to be replaced by another housing with a different set of light sources or to use different interchangeable reflectors with the same head of illumination. Other features, advantages and objects of the present invention will become apparent in the following description of the embodiments taken together with the figures. BRIEF DESCRIPTION OF THE FIGURES Figure 1 is a cross-sectional view of a first embodiment of the invention with two light sources; Figure 2 is a schematic top view of a guide plate of the movement mechanisms of two light sources of Figure 1; Figure 3 is a schematic top view of a cam plate of the movement mechanisms of the two light sources of Figure 1; Figure 4 is a schematic top view of a guide plate of the movement mechanisms of a second embodiment having only one light source; Figure 5 is a schematic top view of a guide plate of the movement mechanisms of a third embodiment having three light sources; Figure 6 is a schematic top view of a guide plate of the movement mechanisms of a fourth embodiment having four light sources; and Figure 6A is a schematic top view of a cam plate of the movement mechanisms of four light sources; Figure 7 is a schematic top view of a guide plate of the movement mechanisms of the two light sources of Figure 1 combined with a centrally placed fixed light source; Figure 8 is a schematic cross-sectional view of a fifth embodiment of the invention with two light sources guided directly along the wall of the reflector.

Figure 9 is a schematic front view of a base plate of two tiltable light sources in a sixth embodiment of the invention. Figure 10 is a schematic side view showing the two tiltable light sources of Figure 9 in their planar position. Figure 11 is a schematic side view showing the two tiltable light sources of Figure 9 in their divergent position, at an open angle. Figure 12 is a schematic side view showing the two tiltable light sources of Figure 9 in their convergent position, concentrated at a closed angle. Figure 13 is a schematic cross-sectional view showing the angular variation of the inclination of the light sources within the reflector and the placement of a centrally positioned control shaft of the sixth embodiment of the invention. Figure 14 is a schematic front view of a base plate for four tiltable light sources of a seventh embodiment of the invention. Figure 15 is a schematic front view of a base plate with two inclinable sections, each with two light sources of an eighth embodiment of the invention. Figure 16 is a schematic side view of a central retention part for the tiltable sections of the sixth, seventh or eighth embodiment of the invention. Figure 17 is a schematic front view of a two-section incunable base plate with two lamps in each section placed in a horizontal and movable configuration in a horizontal direction in a ninth embodiment of the invention. Figure 18 is a schematic front view of a two-section incunable base plate with two lamps in each section positioned vertically in each section and movable in the horizontal direction, similar to Figure 17. Figure 19 is a front schematic view of a tenth embodiment of the invention using a stepped reflector. Figure 20 is a side schematic view of the tenth embodiment of the invention using a stepped reflector. DESCRIPTION OF THE EMBODIMENTS OF THE INVENTION Figures 1-3 show a first embodiment of the invention. The illumination device shown comprises two light sources 10 in the form of ü-shaped light tubes which are placed inside a reflector 11, on opposite sides of the central optical axis 12 of this reflector. The bases 13 of the light sources 10 are arranged in a central opening 14 of the reflector in a base plate 15 constituting the front side of a housing 16 of the lighting device. The base plate 15 and the housing 16 are preferably cylindrical in shape and the cylindrical side wall of the housing extends over the base plate 15, whereby a circular space 17 is formed in which the bases of the light sources are arranged. , so that the pieces that emit light start from a point close to the flush with the reflector opening. The housing 16 preferably contains electronic circuits, compensating elements and power supplies 18 of the lighting device. A main power supply has the reference numeral 19 in Figure 1. The lighting device further comprises displacement mechanisms capable of displacing the light sources 10 with respect to the optical axis 12 of the reflector. To that end, the base plate 15 contains, in accordance with one embodiment of the invention, rectilinear guide grooves 20 (Figure 2) which constitute a guide plate for the lamp or the bases of the tube 13 which are provided with a extension 21 passing through the slots.

The dimensions of the extension 21 are adapted to the width of the groove to ensure easy movement of the extension along the groove. The slots 20 are disposed radially and preferably, but not necessarily, aligned to face each other a. opposite sides of the optical axis 12 of the reflector 11, and move outwardly perpendicular to this axis 12. Accordingly, the bases of the tube 13 can move in these guide grooves 20 in the direction towards and from the optical axis of the reflector, in a plane substantially perpendicular to this axis. The displacement mechanisms further comprise a cam plate or disc 22 disposed immediately below the guide plate 15 in the housing 16 where it is mounted, so that it can rotate about an axis that coincides with the longitudinal axis of the housing . The cams have in this embodiment the shape of two curved grooves 23, but could alternatively, of course, have a groove shape made from the side of the cam disk facing the guide plate 15. The cams could also be formed with guides additional ones coupled to the cam disk 22. Each curved slot 23 has one of its ends near the center of the cam disk 22, while the opposite end is near the periphery of the disk, depending on the amount of movement desired. The extensions 21 of the bases of the tube 13 extend into the cam grooves 23, in such a way that they move along the cam disk when it rotates. The width of the cam slots 23 is adapted to the dimension of the extensions 21 to facilitate their sliding in the slots. To control its rotation, the cam disk 22 is coupled to an arm 24 projecting from the housing through an oblong opening 25 in the wall. The displacement mechanisms according to the present embodiments work in the following manner. Figure 2 shows in continuous lines the position where the bases of the light source 13 are located in their extreme position near the periphery of the guide plate 15 and in dashed lines the position in which they are in their extreme position near from the center of plate 15. They move from the first position to: the second when rotating the cam disk of Figure 3 and can, of course, take any intermediate position. By moving the light sources to and from the optical axis of the reflector, the angle of incidence of the light rays striking the reflector changes, thus modifying its reflectance angle. For this reason, it is possible to direct the light rays to different places in the space by varying the placement of the light sources in the guide base plate 15. In addition, as a light source approaches the surface of the reflector, it joins the rectilinear segments of the arch at a greater angle causing its reflectance angle to increase. These facts apply in the invention to create a new, versatile and efficient luminaire. For use in television studios where the lights hang from above, the control mechanisms for moving the light sources within the reflector are advantageously operated with a pole that is manipulated from the floor. The Figure also shows in discontinuous lines alternative control mechanisms for the cam disc 22. They comprise a central axis 26 connected to the disc 22 and with one end coupled to a rotary knob 27 positioned outside the housing 16. For use in television studios , the rotary knob 27 can in the previous case be operated by means of a cardan joint or universal joint to which a rotating cup is connected. It would be possible, of course, to have other types of movement mechanisms, such as a cone, whose upper part between the bases of the light source slidably mounted and deflected by a spring, in such a way that it displaces the bases towards a peripheral position when it penetrates more between the bases. Other movement mechanisms, including individual manual mechanisms, could be provided to move the light sources independently of one another. Figures 4-6 show some alternative embodiments that have the same type of movement mechanisms as the embodiment described above, but with a varied number of light sources. In the Figure, the base 13 of a single light source can take a position either on the optical axis of the reflector or move along the guide groove 20 extending radially towards the periphery of the guide plate 15. In Figures 5-6, there are 3 and 4 light sources, respectively, guided in guide grooves 20 which extend radially and are arranged in a regular manner in the guide plate 15. The movement of the sources of Light arranged as indicated in figures 5 and 6 should be limited to where a "hole in the center" appears to ensure a homogeneous lighting pattern. To eliminate this "hole in the center", Figure 7 illustrates an advantageous embodiment with a light source having its base 13 'fixedly positioned on the central optical axis of the reflector 11. In the arrangement shown, there are two light source bases 13 that can be moved radially disposed to opposite sides of the fixed light source. Such an arrangement increases the total amount of light and also allows the laterally placed light sources to move further with respect to the optical axis of the reflector 11, to obtain a more open illumination angle, without creating a "hole in the center" that It has less light. Of course, a fixed light source in the center could be used with any number of mobile light sources. In tests carried out by the requesting party, up to 8 light sources have been used successfully. A lighting device manufactured in this way, with a single row of light sources, as shown in figures 2 and 7, will therefore allow the light pattern to be done in a linear manner. This is especially advantageous whenever you want to illuminate the funds in the studios or to illuminate several people sitting in a row, for example in a News Desk. This also allows people to be illuminated without changing the lighting effect applied to the stage behind them, since they are illuminated horizontally, there will be little light fall on the stage behind them, and it will not be wasted light that illuminates the floor behind your desk. Moreover, the housing 16 is advantageously mounted on the reflector 11 with a quick release mechanism, for example a pin device which makes it possible to have interchangeable housings, provided with movement mechanisms according to the invention. Figure 8 shows another embodiment of the invention without a base plate on which the bases of the light source can move. In this case, the extensions of the bases of the light source are placed in the grooves 28 made directly in the wall of the reflector 11. The grooves 28 extend outwardly in the reflector in a plane substantially perpendicular to their optical axis 12. The bases of the light source are coupled to simple displacement mechanisms, for example, push-pull devices and blocking devices well known to the person skilled in the art. The lighting device according to the invention allows to use combinations of different types of light sources, for example, incandescent halogen lamps, fluorescent tubes operated by low or high frequency compensating elements, discharge lamps of various types, flashing tubes electronic Since additional mechanisms for controlling light are usually desirable, mounting mechanisms are provided to use various accessories. These mounting mechanisms may comprise a flange 29 incorporated within the reflector 11 to support grid reflectors, diffusers, color filters, refractive prismatic light intensifiers. An outer flange 30 of the reflector 11 can be provided to hold various accessories, for example, pivoting adjustable screens 31, color filters of jaws, jaw light reflector intensifiers. The mounting mechanisms may also include a ring to link the reflectors either at 45 ° or 60 ° to attach either a large reflector or a light box. The mechanisms may also be provided either in the reflector 11 or in the rear housing 16 for coupling an L-shaped or U-shaped fork to hold and tilt the lighting device in a conventional manner and to hold the lighting device in a flexible gooseneck mount or for pan-tilt movement. Figures 9 to 14 show another embodiment of the invention in which the angle of illumination varies by tilting the light sources (s) instead of varying the distance of their bases from the optical axis of the reflector. If desired, this system can be combined with the one described above. This system has many advantages. It is less expensive to manufacture because it is simpler and uses fewer parts, and avoids the lighting effect of a "hole in the center". The bases of the lamp 13 remain in fixed positions in their respective different sections of the base of the lamp 15. These separate sections are then inclined with respect to the optical axis 12 of the reflector. The Figure is a schematic top view as shown in Figure 15 of a base plate 15 divided along line 29 in two sections, shown with a lamp base 13 in each section. However, two or more lamps may be placed per section. Each section has mechanisms 30 to hold it inside the housing, enclosing them. The angle of the sections with respect to the optical axis of the reflector is controlled either by keeping the axis or center point in place and by moving the outer ends of the base plate 15 forward and backward, or by keeping the outer ends in place. moving the axis or center point of the base plate forward and backward. The individual sections are linked with a hinge mechanism, for example, a hinge 33, or the base plate 15 can be manufactured with a single plastic plate with a flexible section along the line 29, which serves as a hinge. The various sections can also be separate pieces joined by a central piece 31 on which an arrow 35 can be attached, which allows their respective angles to be changed when the arrow 35 moves back and forth. Figure 10 is a schematic side view showing the two sections of the base plate 15 in a flat position with the lamps 10 parallel. Figure 11 is a schematic side view showing the base plate 15 with its sections in a divergent open angle position. In this configuration the lamps pivot beyond the optical axis of the reflector, and are closer to the reflector 11 (Figure 13), joining the segments with a larger arc. In this way, the angle illuminated by the reflector increases. Figure 12 is a side schematic view showing the base plate 15 with its sections in a concentrated converging position. Thus, the lamps are closer forming a smaller light source that is closer to the optical axis of the reflector, and in a deeper position within it, causing an increase in light over a smaller angle. Figure 13 is a schematic cross-sectional view showing the tilting movement of the lamps 10. Generally a movement of ± 15 ° 50 of the lamps is sufficient, but this may vary depending on the placement of the lamps in the base plate 15, the length of the lamps, the angle of variation sought, the design of the reflector, etc. The movement necessary for the variation of the desired angle is advantageously achieved by moving the center of the base plate 15 in the direction of the arrow 34 and controlled, for example, by the arrow 35 and by turning the knob 36 or by an electric motor (not shown) or by a lever similar to the lever 24 shown in Figure 1 coupled to the arrow 35, or by moving the central axis 29 outwards and inwards using the points "32" as in Figure 15 or Figure 9. Figure 14 is a schematic top view of a base plate with four lamp sockets 13 designed to hold APRA four lamps 10, with individual sections 37 for each lamp.This type of baseplate provides a variation in the illuminated angle that is symmetrical.Other baseplates can be designed for use with other quantities of lamps.The individual sections are held in Its site as the examples provided above and its angles are controlled in a similar manner Figure 15 is a schematic top view of a base plate divided into two sections in which four lamp sockets 13 are placed in each section whose angle can be varied This version differs from Figure 14 in that when the lamps are tilted, a greater variation of the illuminated angle occurs in a plan or compared to the other. The Figure illustrates with a side elevated view a version of the retaining end of the control arrow coupled to the center of the base plate 15. This part holds all the sections in place at their center points, while allowing the arrow control 35 tilt them backwards and forwards. Figures 17 and 18 show another version of how the lamp sockets 13 can be mounted on the base plate 15. Two or more lamp sockets 13 are mounted on the plates 51 which in turn can be mounted and rotated about the point 52. Figure 17 shows the lamps aligned horizontally, while Figure 18 shows the lamps in the vertical position close to each other, when moving laterally. These turntables 51 can also be used with the above-described baseplates designed to be inclined along the axis 29. Figures 19 and 20 show another embodiment of the present invention of particular interest for making overhead lights that are adjustable both in the direction they illuminate as in the illuminated angle, and that they have a much greater efficiency than the current lights that are in the size range of 60 cm x 60 cm, which only illuminate downwards in an uncontrollable direction and which do not have control over the illuminated angle. My invention makes it possible to manufacture lights that can direct light either downward or laterally at an angle of attack that can be fixed or variable. In addition, its design allows the lighting angle to be varied as desired. By using specially designed stepped reflective elements, it is possible to manufacture such lighting fixtures that can be modified in the ceilings and spaces currently occupied by known lighting fixtures with fixed lighting characteristics. It is advantageous to use a lighting fixture manufactured in accordance with my invention, since while it is housed in a fixed position in or on the ceiling, it can illuminate a picture or decoration on the adjoining wall. Also, its angle can be varied to illuminate areas of different sizes. In addition, if two separate light sources are used, you can have two different lighting zones and adjust using only one lighting fixture. Moreover, the efficiency of these accessories is much greater than that of current lighting fixtures that use diffusers in front of the lights. The Figure is a schematic top view of the accessory 36 in the main concentrator reflector, which may be concave in shape or a stepped reflector as illustrated here. If it is desired to reduce tool costs, this stepped reflector may be composed of several smaller sections 41 joined as desired. The light source 42 (Figure 20) can be of different types, for example, an incandescent lamp, fluorescent lamp, discharge lamp, electronic flash lamp, etc. Mechanisms are provided to allow its placement at different distances from the reflector 36. and at different points with respect to the optical axis of the reflector., by selecting a point closer or further from the reflector 36, the illuminated angle can be selected, and when moving it on different areas of 36, the light can be directed in the space as desired. A vertical arrow 37 is shown in a corner of the fixture, illustrating a manner of how it can be used to adjust the distance of the light source 42, shown mounted on the side bar 38. However, one or more arrows may be placed. verticals 37 elsewhere and one or more lateral or radial bars may be used. The lateral or radial bars 38 can be rotated as indicated by arrows R. Figure 20 is a schematic cross-sectional view of this version of a device manufactured in accordance with the invention. The arrows 44 show the area on the stepped reflector 36 where the light source 42 can be moved, coupled in this case to the reflector 43 to gather light that has not fallen on the reflector 36. The arrows 45 show how the height of the light can be selected. the light source 42 to obtain the desired illumination angle. This angle increases, as the distance 45 decreases, and the angle decreases, with the corresponding increase in light output, as the distance increases to that of the focal length of the reflector 36. The light can be reflected laterally, moving away from the optical axis 12 to the moving the light source 42 in the opposite direction, toward the opposite end of the reflector 36. To illuminate the reflector 36 more evenly, mechanisms are provided to allow the light source 42 to tilt toward the center of the reflector 36. Another form of Embodiment of my invention is of interest primarily for the backgrounds of lighting cyclorams or for front lighting in which one or more accessories manufactured in accordance with the present invention are assembled together, their light reflected by one or more mirror reflectors common to all . Figure 21 is a schematic perspective view of this embodiment of the present invention in which four accessories 46 manufactured in accordance with the present invention are placed side by side and are surrounded by one or more reflective mirror surfaces 47. Using other configurations, for example, square, hexagonal, etc., each lamp may have its own light filtered by color filters 48 placed across its front face. The mirror surfaces 47 fulfill two functions: they increase the light output when capturing and reflect the front that could be wasted when going to the side. They mix the light that comes from all the accessories 46 since each reflective surface 47 is a common reflector used by all of them together. The mixing of the light made by the reflecting surfaces 47 is especially advantageous when illuminating backgrounds with light. red, green and blue. A common focus control (not shown) allows the lighting angle to be varied for the entire set of lamps. In addition, each lamp can be attenuated separately, or can all be attenuated together with known attenuation mechanisms.

Claims (20)

1. A lighting device comprising at least two light sources (10) placed in a position to illuminate a reflector (11, 36 - Figure 19), with adjustable mechanisms (13, 15, 20, 22, 23, 28, 37 ) to support, move or orient the light sources (10) in one or more positions, orientations or directions with respect to the central axis (12) of the reflector, where at least two light sources (10) are mounted of displacement mechanisms provided for displacing or tilting, or both, the light sources (10) in a direction towards and from the reflector axis (12), in a plane substantially perpendicular to the axis, for placing the light sources ( 10) with respect to the axis (12) of the reflector (11, 36 - Figure 19) in a zone remote from the axis (12), so that a projected pattern of light is created and directed on an object that will be illuminated.

2. A lighting device according to claim 1, wherein the reflector (11) comprises a concave shape or part.

3. A lighting device according to claim 1, wherein the reflector is a concentration reflector with one or more portions of a substantially planar stepped reflector.

4. A lighting device according to any of the preceding claims, wherein the light sources (10) can be inclined to and from the optical axis (12) to ± 15 °.

5. A lighting device according to any of the preceding claims, wherein the light sources (10) are mounted together, either rotatably about a common axis (52) and placed in a fixed or mobile manner, or inclined with respect to the axis (12) of the reflector (11).

6. A lighting device according to any of the preceding claims, wherein a fixed light source (10) is placed on the axis (12) of the reflector (11).

7. A lighting device according to any of the preceding claims, wherein the movement mechanisms (13, 15, 20, 22, 23) comprise a guide plate (15) having at least one guide slot ( 20) through which passes an extension (21) of a base (13) of each of the light sources (10), a cam plate (22) that is placed below the guide plate (15) and having at least one cam (23) that cooperates with the base of the light source (13), the guide plate (15) and the cam plate (22) being capable of a relative rotational movement with which the base of the light source (13) is displaced in the direction towards and from the reflector shaft (11).

8. A lighting device according to claim 7, wherein the guide groove (20) of the guide plate (15) is a rectilinear groove extending radially outwardly from the reflector shaft (12). (11) and the cam (23) of the cam plate (22) is curved.

9. A lighting device as claimed in claim 8, wherein at least one reed (23) of the cam plate is a slot.

A lighting device according to any of claims 1-5, wherein the mechanisms are tilting mechanisms comprising at least one base plate (15) that is separated into separate, interconnected sections (37) or no, with one or more light sources (10) mounted in each section, and where the respective angles of each section can be varied with respect to each other and with respect to the axis (12) of the reflector (11).

11. A lighting device according to claim 10, wherein the tilting mechanisms (15, 37) are controlled by movement to and from an arrow (35) connected to one or more section (37).

12. A lighting device according to any of the preceding claims, wherein the mechanisms (15, 37) are connected to external control mechanisms (35, 36) to activate the mechanisms.

13. A lighting device as claimed in claim 12, wherein the control mechanisms comprise a fixed arm (24) in the movement or inclination mechanisms (15, 37) and extending out of the device in a direction perpendicular to the axis (12) of the reflector (11).

A lighting device as claimed in claim 12, wherein the external control mechanisms comprise a rotating arrow (27, 36) linked to the movement or tilt mechanisms and extending out of the device and connected to a rotary knob (36) that is outside the device or to the arrow of an electric motor.

15. A lighting device according to any of claims 2, 6 or 12, wherein the mechanisms (28) are capable of moving a base of the light sources (10) along the reflector wall ( eleven) .

16. A lighting device according to the preceding claims, wherein the device comprises at least two light sources (10) of a different nature, for example, halogen incandescent lamps, fluorescent tubes operated by ferro-resonant compensating elements. or high frequency, discharge lamps, electronic flashing tubes.

17. A lighting device according to any of the preceding claims, wherein the light sources (10) and the mechanisms (12, 15, 20, 23, 28, 37) are placed in interchangeable housings, in such a way that allow the use of different housings containing other lamps, or that are used together with interchangeable reflectors, and to facilitate the transport and storage of the lighting fixtures when separating the reflectors from the lighting heads.

18. A lighting device according to any of the preceding claims, wherein at least one base plate (51) of one or more light sources can be rotated, in such a way that it rotates in a manner similar to the pattern of desired light emitted by the lighting device.

19. A lighting device according to the preceding claims, wherein at least one reflector (11, 36 - Figure 9) is interchangeable.

20. A lighting device comprising one or more lighting devices according to any of the preceding claims wherein the main reflectors are placed adjacently (46) and used together with or without one or more highly reflecting surfaces. additional (47),