FR3034499A1 - LUMINOUS DEVICE COMPRISING A PROJECTOR WITH A PLURALITY OF LIGHT SOURCES ARRANGED ON THE FRONT PANEL AND ON THE REAR PANEL OF THE PROJECTOR - Google Patents

Abstract

The present invention relates to a luminous device comprising: - a base for fixing said light device on a support, - a projector with a front face comprising first light sources and a rear face comprising second light sources, - an arm connected to a from its ends to the base with a first attachment member, the arm being rotatable relative to the base about a first axis of rotation, the projector being attached to the arm using a second fixing element, the projector being rotatable relative to the arm, about a second axis of rotation, the first axis of rotation and the second axis of rotation being substantially perpendicular, the light device being characterized in that that the first light sources are of a first type and the second light sources are of a second type, the second type being different from the first type .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of lighting and, more specifically, to a light device comprising: a light device comprising a projector provided with a plurality of light sources disposed on the front face and on the rear face of said projector; a projector having a plurality of light sources and a base for fixing the light device on a support, the projector being connected to said base by means of a pivoting connection in the form of an arm .

STATE OF THE ART Nowadays, it is known to use a luminous device comprising a base which forms the fixed element of the luminous device. A first end of an arm is attached to said base by means of a fastener which allows rotation of said arm relative to the base about a first axis of rotation. A projector comprising light sources is connected to the arm by means of a second fixing element allowing the rotation of said projector relative to said arm about a second axis of rotation. In the prior art, the first axis of rotation and the second axis of rotation are substantially perpendicular to each other. Such a light device offers the user a great freedom of orientation of the projector and therefore the light sources. In the field of the spectacle, and more particularly during the theatrical performances or the musical spectacles, the luminous devices represent a not insignificant part of the decoration. Indeed, the luminous devices are used in order to complete the visual image offered to the spectators by generating particular luminous effects. During the normal use of the light devices, it is possible to materialize the light beams obtained from the light sources and this, using a smoke type "fog". This fog forms the support on which the different light beams are made visible to the spectators. The prior art discloses other known light devices for having a projector substantially in the form of a panel. At least one side of said panel has light sources allowing the projector to represent images. The light sources present on the panel may be, for example, light emitting diodes (LEDs). The resolution of the image shown on the panel surface is proportional to the amount of light emitting diodes installed on the projector. Thus, the resolution of the image represented on the panel surface increases with the number of light-emitting diodes. However, such light devices do not provide sufficient degrees of freedom in the use of the projector. It is therefore necessary to improve the light devices of the prior art to offer the user more freedom in handling the light devices, and particularly the manipulation of the headlamps of said light devices in order to create innovative visual effects. OBJECT OF THE INVENTION The object of the present invention is to provide a light device comprising a base, an arm connected to said base, said arm being able to pivot about the base along a first axis of rotation, and a projector. connected to the arm to allow said projector to pivot about a second axis of rotation relative to the arm. Another object is to provide such a projector having at least a first plurality of light sources capable of forming light beams and a second plurality of light sources capable of representing an image. Thus, the object of the present invention relates to a luminous device comprising: - a base for fixing said luminous device on a support, 3034499 3 - a projector with a front face comprising first light sources and a rear face comprising second light sources; - an arm connected at one of its ends to the base by means of a first fixing element, the arm being rotatable relative to the base, about a first axis of rotation; the projector being fixed to the arm with a second fixing element, the projector being rotatable relative to the arm, about a second axis of rotation, the first axis of rotation and the second axis of rotation; rotation being essentially perpendicular, the light device being characterized in that the first light sources are of a first type and the second light sources are of a second type, the second type being different from the first type.

According to a particular embodiment of the present invention, the projector is essentially in the form of a panel. According to a particular embodiment of the present invention, the front face of the projector comprises a screen forming an image projector comprising a first plurality of light sources positioned according to a matrix comprising at least 64 rows and 64 columns. According to a particular embodiment of the present invention, the front face of the projector comprises a screen forming an image projector comprising a plurality of light sources positioned according to a matrix comprising between 64 and 128 lines and between 64 and 128 columns. According to a particular embodiment of the present invention, the first plurality of light sources comprises light emitting diodes (LEDs). According to a particular embodiment of the present invention, the rear face of the headlamp is provided with a second plurality of light sources comprising (LEDs), each light-emitting diode (LED) being provided with an optical element, such as a collimator, to obtain a light beam.

According to a particular embodiment of the present invention, the first fastening element and the second fastening element are adapted to allow 360 ° rotation, the first fastening element and the second fastening element being adapted to transfer. electrical energy as well as information relating to the control of the first and second plurality of light sources.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, objects and features of the present invention will become more apparent upon reading the following description with reference to the figures in which: FIG. 1 shows a front view of the light device according to FIG. the invention, and more particularly the front face of the projector of said light device, - Figure 2 shows a front view of the light device according to Figure 1, and more particularly the rear face of the projector of said light device, - Figure 3 shows a side view of the light device according to Figures 1 and 2, - Figure 4 shows a top view of the light device according to Figures 1 to 3, - Figure 5 shows a plurality of light devices according to Figures 1 to 4. , and more particularly the front faces of said light devices, said light devices being positioned so as to form a matrix, FIG. urality of light devices according to Figure 5, said light devices being positioned to show the rear face of the light devices, - Figure 7 shows a plurality of light devices according to Figures 5 and 6, and more particularly the rear faces of said 3034499 5 luminous devices, said luminous devices being positioned to form a matrix, - Figure 8 shows a plurality of luminous devices according to Figures 1 to 4, the luminous devices together forming a circle, - Figure 9 shows a schematic view a plurality of light devices according to Figures 1 to 4, said luminous devices together forming a rectangular surface; - Figure 10 shows a plurality of rectangular surfaces according to Figure 9, all of said surfaces constituting a decor, and 10 - Figure 11 shows a schematic view of a fixing element of a light device according to FIGS. 1 to 4. FIG. 1 shows an embodiment of a light device 10 according to the invention. The light device 10 comprises a base 2 adapted to fix the light device 10 on a support (not shown), said support being able to be a wall or a structure adapted to receive a predetermined quantity of light devices 10, some fixed next to the other. An arm 3 is fixed to the base 2 by means of a first fixing element 4 which defines a first axis of rotation enabling said arm 3 to rotate about said first axis of rotation relative to the base 2. The first The axis of rotation is essentially perpendicular to the horizontal plane of the base 2. The first fastening element 4 allows the arm 3 to rotate without limitation in the two possible directions of rotation relative to the base 2 and in a horizontal plane 25. said base 2. The first fastening element 4 is adapted to allow, simultaneously, the rotation of the arm 3 and the transfer of the electrical energy from the base 2 to the arm 3. The first fastening element 4 is also adapted to transmit commands and instructions communicated by a control element to the base 2 and then transferred from the base 2 to the arm 3 via the first fastening element 4. A panel-shaped projector 5 is fixed é on the arm 3 with the aid of at least one second fastening element. The projector 5 comprises a plurality of light sources (not shown). In Figure 1, the arm 3 is shaped "U". This means that the projector 5 is fixed by means of a second and a third fastening element allowing the projector 5 to pivot relative to the arm 3 about a second axis of rotation. The second axis of rotation is substantially perpendicular to the first axis of rotation. The operation of the second and third fasteners is described below with reference to Figs. 5, 6 and 7. The second and third fasteners, allowing the connection of the projector 5 to the arm 3, are adapted to transfer the electrical energy and the instructions and commands of the arm 3 to said projector 5, to ensure the operation of the light sources present on the projector 5.

The base 2 comprises one or more connectors intended on the one hand to connect said base 2 to a source of electrical energy and, on the other hand, to connect said base 2 to a control element. The control element is itself intended to transmit instructions and commands to the base 2 in order to control the movement of the arm 3 relative to the base 2 and the movement of the projector 5 relative to the arm 3. Moreover, , the control element is adapted to transmit commands for operating the light sources present within the light device 10 according to FIG.

The projector 5 comprises a front face 6 and a rear face 7. The front face 6 of the projector 5 shown in FIG. 1 is adapted to represent an image. The front face 6 of the projector 5 is provided with a determined quantity of light sources making it possible to represent an image on said front face 6. These light sources comprise, for example, light-emitting diodes (LEDs) of three different colors. The signals controlling the use of the different light sources are used, firstly to adjust the intensity of the LED light sources when the latter are in operation and, secondly, to adjust individually the specific color of the light source. each light source.

The amount of light sources used on the front face 6 determines the resolution of the image obtained on said front face 6. Thus, the resolution of the image obtained is all the more optimal as the number of light sources is high. When the light sources comprise LEDs, the size of said LEDs 35 determines the maximum amount of LEDs that can be used on the front face 6 of the projector 5. By way of example, a P6-type LED occupies a substantially square surface , of dimension 6 x 6 mm. Thus, a projector 5 of a size equal to 40cm x 40cm, can contain on the front face 6, 64 x 64 LEDs (a total of 4096 LEDs.) Consequently, the amount of LEDs installed on the front face 5 6 5 In practice, the front face 6 of the projector 5 can therefore be provided with 64 x 64 LEDs, According to an alternative embodiment, the front face 6 of the projector 5 can be provided. In another embodiment, the front face 6 of the projector 5 can be provided with 128 x 128 LEDs, to obtain an even more optimal image resolution it is possible to install 160 x 160 LEDs on the front panel 6 of the projector 5. The image shown on the front panel 6 of the projector 5 may, for example, be a video signal of HDMI, DVI or any other type of signal, such as an Ethernet link, adapted the use of the light device 10 according to the invention The front face 6 of the light device According to the invention, they represent only part of an image obtained by the juxtaposition of a plurality of light devices 10. In practice, the entire image is transmitted to the base 2 of the light device 10. The base 2 comprises an electronic unit (not shown) for selecting a specific part of the image, then transferring said specific part from said base 2 to the arm 3, and then from the arm 3 to the projector 5. Thus, the base 2 comprises means adapted to store instructions which, once executed, allow the front face 6 of the projector 5 to display the representation of the specific part of the image adapted to the surface available on the projector 5 and to the orientation of the light device 10 concerned with respect to the other light devices 10 present.

FIG. 2 shows a front view of the rear face 7 of the projector of the light device 10 according to FIG. 1. The rear face 7 of the projector 5 comprises a determined quantity of light sources 8. The example as described in FIG. 2 represents the rear face 7 comprising 25 light sources 8, arranged along 5 rows and 5 columns.

The light sources 8 located on the rear face 7 of the projector 5 are adapted to create light beams. For example, a light source 8 is positioned on a printed circuit. An optical element, such as a collimator, is positioned on the light source, said collimator being used to create a light beam diffusing parallel light rays. Such a type of light source 8 is known from the prior art and described in detail, for example, in the patent application FR1252482 filed by the same applicant. The light beams obtained from the light sources 8 on the rear face 107 of the projector 5 are used to illuminate a place or a space in the environment of the light device 10 as installed. During its normal use, the luminous device 10 may be used in the presence of a "fog" type smoke. The "fog" type of smoke serves to materialize the light beams by serving as a support for said light beams made visible to the spectators. The light device 10 according to Figures 1 and 2 allows to create a relatively high number of visual effects. An image can be represented by the use of several light devices 10, the front faces 6 of the projectors 5 being visible to the spectators. During the presentation of an image, the projector 5 can either rotate or pivot relative to the base 2 by using the first fastening element 4 between said base 2 and the arm 3 on the one hand and the first , second and optionally third fasteners 4 present between the arm 3 and the projector 5, on the other hand. These rotational and pivoting movements of the projector 5 relative to the base 2 generate visual effects which can enhance the rendering of the displayed image by the light sources present on the front face 6 of the projector 5. The various projectors 5 of the adjacent luminous devices 10 are movable relative to one another, which gives the impression of a force so great that the image can be "unstructured", for example if the image is made visible by the different faces before 6 spotlights 5 shows a car or moving animal. Alternatively, the luminous devices 10 may be used to use the rear faces 7 of said projectors 5 during the presentation of an image 35 on the different front faces 6 of the projectors 5. Thus, it is possible to obtain 3034499 9 visual effects combining an image obtained using several front faces 6 of the projectors 5 and light beams created using light sources 8 on the rear faces 7 of said projectors 5. For example, when the different front faces 6 projectors 5 display the image of a human face, said projectors corresponding to the display of the character's eyes may be rotated to give the impression that the character's eyes project light or fire. In view of the different possibilities offered by the light device 10 according to the invention, it should be noted that the intensity and the color of the different light sources 8 located on the front 6 and rear 7 of the projectors 5 can vary. The combination of intensity and color variations offers multiple options for using the light device 10 according to the present invention.

FIG. 3 shows a side view of the light device according to FIGS. 1 and 2. FIG. 3 shows in detail the arm 3 fixed to the base 2. The direction in which the projector 5 can swing relative to the arm 3 is diagrammatically indicated in FIG. 3 with the aid of the arrow 21. The arrow 22 indicates, also schematically, the rotation of the assembly composed of the arm 3 and the projector 5 with respect to the base 2. FIG. the different light sources 8, present on the front face 6 of the projectors 5, shown on the left in FIG. 3, can generate individual light beams 9. The light beams thus give the impression, thanks to the diffusion of a "fog" type smoke, of being physical elements actually present in the space in which the light device 10 is used. On the front face 6 of the projector 5, all the different light sources 8 create a scattered image, represented by a light ray limited by the lines 18, 19. As shown in Figure 3, the projector 5 comprises one or more orifices 51 between the 6 and the rear face 7. The orifices 51 allow the entry and diffusion of a flow of air used to cool the different light sources 8 installed on the front face 6 and on the rear face 7 of the projector 5 The cooling means (not shown) may comprise any suitable means including, for example, a fan combined with heat exchangers in order to suppress a given amount of heat present within of the projector 5 when the light device 3034499 10 is used. Alternatively, the cooling means may comprise, for example, heat-transfer tubes. FIG. 4 shows a view from above of the light device according to FIGS. 1 to 3.

FIG. 4 shows a particular position of use of said light device 10. Thus, the base 2 is fixed on a support in a substantially vertical position. During the use of the light device 10, the base 2 is located at the rear of the projector 5. In FIG. 4, the pivoting of the projector 5 with respect to the arm 3 is indicated by means of the arrow 21. The rotational movement of the assembly 10 composed of the arm 3 and the projector 5 relative to the base is indicated by means of the arrow 22. FIGS. 5, 6, 7 show an embodiment of a set of luminous devices 10 according to the invention. The use described in FIGS. 5, 6, 7 shows sixteen light devices 10 positioned to form a square or die having four rows and four columns. FIG. 5 shows a plurality of light devices according to FIGS. 1 to 4, and more particularly the front faces 6 of said light devices 10, said light devices 10 being positioned so as to form a matrix. FIG. 5 shows a possibility of using the light devices 10 according to which the front faces 6 of the projectors 5 are oriented towards the spectators. Thus, the different front faces 6 of the projectors 5 of the light devices 10 can all be used to represent an image together. A determined space is present between the ends of the different projectors 5 of the light devices 10, shown in FIG. 5, said determined space allowing, on the one hand, the rotation of the different projectors 5 with respect to the arm 3 and, on the other hand, part, the rotation of the entire arm 3 and the projector 5 relative to the base 2 during normal use of the light device 10 according to the invention. In view of the operation of the human eye, the presence of the determined space is not detrimental to the viewing of the image by a spectator. Indeed, the human eye is capable of completing the various determined spaces present between the different adjacent projectors 5 in order to reconstruct the parts of images associated with said determined spaces.

FIG. 6 shows a plurality of light devices 10 according to FIG. 5, said light devices 10 being rotated so as to show the rear face 7 of the light devices 10. FIG. 6 shows a possibility of using the light devices 10 according to which the different projectors 5, as positioned according to FIG. 5, are tilted so as to be oriented so as to show the rear face 7 of said projectors 5. In FIGS. 5 and 6, it is possible to display, in FIGS. a first step, then to return one by one the different projectors 5 to replace said first image by light beams obtained thanks to the different light sources 8 present on the rear faces 7 of said projectors 5.

FIG. 7 shows a plurality of light devices 10 according to FIGS. 5 and 6, and more particularly the rear faces 7 of said light devices. FIG. 7 shows a possibility of using the light devices 10 according to which the different projectors 5 are oriented so as to show the rear face 7 of said projectors 5. According to this possibility, all the light sources 8, located on the faces 7 rear projectors 5 are available to create light beams. Fig. 8 shows a plurality of light devices 10 according to Figs. 1 to 4, the different light devices 10 being positioned to form a circle. As shown in FIG. 8, the various luminous devices 10 are oriented in square form with the angles at the top, bottom, right and left. The light devices 10 as shown in FIG. 8, as well as their respective position and orientation, are known. This allows the light device 10 according to FIG. 8 to represent an image. It will be apparent to those skilled in the art that a first quantity of light devices 10 according to FIG. 8 may be combined with several other pluralities of light devices 10 in order to represent a number together. By way of example, a first plurality of light devices 10 may represent the numeral 1, 5, 6 and a second plurality of light devices 10 may represent the digit 0. FIG. 9 shows a schematic view of a plurality of devices 10 according to FIGS. 1 to 4, said luminous devices 10 together forming a rectangular surface 60. FIG. 9 shows a rectangular figure 60, said surface 35 comprising a determined quantity of light devices 10 according to the invention, 3034499 12 said light devices 10 together may form a matrix or a rectangular surface 60. The devices 1a may be placed anywhere within the image shown on the rectangular surface 60. The rectangular surface 60 is connected to a control element 65 at the same time. four connections 61 to 64.

The control element 65 is itself connected to a light source 66. The control element 65 is adapted to transmit commands to the different light devices 10 present on the rectangular surface 60. The control element 65 is also adapted to indicate, to each of the light devices 10 present on the rectangular surface 60, which part of the image is associated with it.

In the example as shown in FIG. 9, each light device 10 has 64 x 64 pixels. The rectangular surface 60 represents for example 2000 x 1000 pixels. The rectangular surface 60 is, for example, adapted for a HDMI or DVI "2K" video signal. In practice, the user can compose said rectangular surface 60 using the light devices 10 according to the invention. Then, using the control device 65 and the connections 61 to 64, located between the control device 65 and the different light devices 10, the user can represent an image on the light devices 10 within said rectangular surface 60. When the image is not perfectly uniform during the display, the user can correct said image on the different luminous devices 10. In fact, the user can correct the image displayed by each light device 10 of the light. the assembly comprising the rectangular surface 60. When the correction is carried out, the various luminous devices 10 display a uniform image by means of which the user can create light effects as described above.

Fig. 10 shows an assembly composed of rectangular surfaces 60 according to Fig. 9, said surfaces together constituting a decoration. Each rectangular surface 60 is connected to a control element 65. The control elements 65 are connected to a video source or to a multimedia server 66.

The final image represented on the set consisting of the four rectangular surfaces 60 may be, for example, an image from an HDMI or DVI "4K" video signal comprising 3840 x 2160 pixels. The control elements 65, as shown in FIGS. 9 and 10, are for example a multimedia server comprising software for transforming a video image into computer instructions and for transmitting said instructions to the various luminous devices 10 assembled within a set of rectangular surfaces 60 as shown in Figures 9 and 10. In the example as shown in Figure 10, the image represented by the set consisting of four rectangular surfaces 60 comprises 3840 x 2160 pixels. The assembly composed of the rectangular surfaces 60, 5 as shown in FIG. 10, can be widened along two axes (X, Y). It suffices for this to use a video source 66 adapted to generate the required number of pixels. Figure 11 shows a schematic view of a fastener 70 adapted to be used as the first fastener between the base 2 and the arm 3 or be used between the arm 3 and the projector 5. The fastener 70 comprises an outer element 71, of cylindrical shape, provided with a portion 75, in the form of a disc, on which are fixed connectors 73. The fastening element can, for example, be used to fix the light device 10 on the base 15 2. The connectors 73 have a fixed position and can be connected to the connector for controlling the different light sources within the light device 10 according to the invention. In addition, the connectors 73 can be connected to a source of electrical energy necessary for the proper functioning of the light device 10 according to the invention.

The fastener 70 comprises an inner member 72, substantially cylindrical in shape. The inner element 72 is provided internally with connectors 74. The end of the inner element 72 may, for example, be fixed to a determined location of the arm 3, when the light device 10 is used, between the base 2 and the arm 3. The connectors 74 can be attached to the connectors adapted to the transfer of electrical energy and control signals. The fastening element 70, as shown in FIG. 11, is adapted to comprise a series of brushes (not shown) positioned next to each other along the length "L" of said fastening element 70. Each broom is adapted for transferring a determined amount of electrical energy and / or information from the outer member 71 to the inner member 72. According to a particular embodiment, the outer member 71 and the inner member 72 are connected to the outer member 71. 48 brooms help. The breakdown for information transfer 35 and electrical power can be defined as follows: 3034499 14 - Twisted Pair for Video LED Card, - 34 Data Connections for Video LED Card, - 4 Data Connections Power LED Card , 5 - 2 connections for the fan part of the cooling system inside the projector 5, - 3 connections for the power supply 28Volts dc / 4A, - 3 connections for the power supply 380Volts ac / 5A, 10 According to a mode of particular embodiment, the length "L" of the body of the fastener 70 may be of the order of 115 mm and the diameter of the inner member 72 may be about 34 mm. 15 20 25 30 35

Claims (7)

REVENDICATIONS1. Luminous device comprising: - a base for fixing said luminous device on a support, - a projector with a front face comprising first light sources and a rear face comprising second light sources, - an arm connected at one of its ends to the base by means of a first fixing element, the arm being rotatable relative to the base, around a first axis of rotation, the projector being fixed to the arm by means of a second fixing element, the projector being movable in rotation relative to the arm, about a second axis of rotation, the first axis of rotation and the second axis of rotation being substantially perpendicular, the light device being characterized in that the first sources The first and second light sources are of a second type, the second type being different from the first type. 2. Light device according to claim 1, wherein the projector is substantially in the form of a panel. 3. Light device according to claim 1 or 2, wherein the front face of the projector comprises a screen forming an image projector having a first plurality of light sources positioned in a matrix having at least 64 rows and 64 columns. 4. Light device according to claim 3, wherein the front face of the projector comprises a screen forming an image projector having a plurality of light sources positioned in a matrix having between 64 and 128 lines and between 64 and 128 columns. 3034499 16 The luminous device according to one of claims 3 or 4, wherein the first plurality of light sources comprises light emitting diodes (LEDs). 5 The luminous device according to one of claims 1 to 5, wherein the rear face of the projector is provided with a second plurality of light sources comprising (LED) and wherein each light emitting diode (LED) is provided with a optical element, such as a collimator, for obtaining a light beam. 10 Light device according to one of claims 1 to 6, wherein the first fastening element and the second fastening element are adapted to allow 360 ° rotation and wherein the first fastening element and the second fastening element. are adapted to transfer electrical energy as well as information relating to the control of the first and second plurality of light sources. 20 25 3035