FR2776049A1 - Controlled energy diffuser/projector for electrical, luminous, electromagnetic, fluid, energy, etc. - Google Patents

Abstract

The projector is composed of a central module (1) in a central hollow body (4) surrounded by a diffusing crown (2) formed from a number of hollow diffusion heads (3) arranged radially and concentric around the central part (4). The face of each diffusion head is covered by at least a wall through which the energy can pass. The hollow central body (4) communicates with the interior volume of each of the diffusion heads (3) via a passage passing through the lateral wall of the body (4). The body (4) contains a group of geometrical interior reflectors placed before an emission/reception window (8) which is the central opening formed in the rear wall of the central hollow body (4).

Description

l

  PROJECTOR DIFFUSER OF A CONTROLLED AND MODEL FLOW

OF ENERGY.

  The present invention relates to a functional unit intended to reflect or transmit in a controlled manner an energy-carrying flux emitted by an energy source with diffusion and modeling effect.

  and this in transmission or reception.

  Due to its reversible nature, the functional unit according to the invention can function either as a transmitter by integrating the source to radiate energy in a multidirectional and controlled manner or as a receiver by integrating a sensor or a detector

  when it receives an energy flow from the outside.

  It can operate simultaneously or alternately or successively in transmission and / or reception from an internal and / or external source. The invention relates not only to the transmission function in transmission or to reception, but also to the reflection function in which the flow

  energy is sent in another direction.

  According to the inventor, there is currently no device for controlling light and more generally a visible or invisible energy flow making it possible to change its density, zone by zone, in depth and intimately mixing them together in a predetermined space

  according to the peculiarities of the incident energy.

  Devices are known to act on

  flash light or low intensity light.

  As far as flash light is concerned, the devices that currently exist are called "honeycombs", which only compartmentalize the

  light zone by zone in one direction.

  Then, we use many materials which are more or less diffusing and which play only on the softness or the intensity of the light and not on its direction in the concept of spatial multistereo. In addition, we only play on the size of the box reflectors

  light but without fundamentally changing the light.

  It will simply be more or less attenuated unlike the present invention which modulates and

sculpt it in space.

  For permanent low light, simple holes or simple reflective panels are used. Some act as a light return

  indirect but we do not control the light by area.

  We also know the invention disclosed by publication No. WO 96 34228 in the name of Olivier

CAILLAUD.

  This invention relates to a light box with reflective faces containing a plurality of movable mirrors carried by rods. Groups of adjustable mirrors placed on the same axis return the light according to their own inclination. This is manually adjustable. Alignments of mirrors on the same axis pass through the central part and the atria, which is contrary to the good light output and the independence of the mirrors necessary for the multidirectional properties targeted by this

invention.

  The means indicated in this publication allow only a rudimentary and very limited control of the light. This light box with fixed walls and structures and a particular central part does not allow perfect relaxation of light or sound or an effect

  multidirectional sensitive and satisfactory.

  The arrangement of the central part is not sufficiently adapted for all the desired effects and

  only concerns visible light.

  The general aim of the invention is the controlled spatial diffusion of an emitted energy flow or its reflection-diffusion. It also aims at the concentration of an incident energy flow towards the reception window (reception function and no longer emission) whether it is radiation, waves, radiation or any other form of energy or a current of one or more carrier fluid (s)

of energy, all at the same time.

  The object of the invention is to send wave fronts of different density to each other and having zones of different energy densities simultaneously and to control zone by zone in a predetermined space open at 180 downstream from the source.

  energy distribution when parameters change.

  The advantages of the invention are particularly numerous in all fields of application. We will simply indicate below the

  main advantages common to all areas.

  It is mainly about the multidirectional and controlled diffusion of energy allowing to widen the diffusion space and to give it relief specifically zone by zone. This visual, sound or other relief can be modified at will in real time and simultaneously with respect to the

emission source.

  And in all cases, the invention makes it possible to have a round, soft but contrasted light (not gray), enveloping and capable of being adjusted by zones simultaneously, that is to say of having a light

  stronger back and weaker forward.

  The invention makes it possible to obtain a high quality lighting providing images or visualizations of what is lit with a remarkable rendering of the volumes where the colors can be dosed without being exhilarating and contrasted to excess and thus giving an impression. of natural shade when it remains. It will therefore be understood that photography is one of the preferred but non-limiting applications of the invention. The present invention combines the advantages of the so-called umbrella source and those of the direct or indirect reflector. We take advantage of the soft light provided by the umbrella source and the quality of the contrast of direct light without the drawbacks specific to each of these two complementary lighting methods. Many applications are envisaged in the most varied fields. Of course

  the actual application will depend on the technical reality

  economics of the subject of the invention in the field under consideration. We can cite for this purpose, but not limited to, the following areas of application: lighting in general: scenic, shooting, domestic, public, offices, windows, museums ... lighting in photography 20. the lighting of land vehicles the broadcasting and reception of sounds the broadcasting and reception of electromagnetic waves the field of cooking materials and food 25. the medical, surgical and dental fields the field of reprography of high level medical imaging: scanner and radioscopy the general field of energy sensors: solar,

electromagnetic, luminous ...

  Other features and benefits of

  the invention will appear in the description which follows,

  given by way of nonlimiting example with reference to the appended drawing in which: FIG. 1 is a schematic overall view in perspective and from the front of the projector-diffuser according to the invention in which only one diffusion head is shown complete; Figure 2 is an exploded perspective view showing the composition of the central module; Figure 3 is a general overview in perspective of the projector-diffuser according to the invention in a technological version considered as an exemplary embodiment; Figure 4 is a side view showing the invention as a whole with cutaway on the central part of the central module and showing one of the diffusion heads pivoted upwards; FIG. 5 is a general diagram in cross section illustrating the characteristic course

  of a light beam through the projector-

  diffuser according to the invention; 15. Figures 6 and 7 are perspective views of a diffusion head respectively in a straight position and in a position of maximum expansion and inclination according to a technological embodiment taken as an example; 20. Figures 8 to 10 are perspective views in

  exploded layout of the three main sub-

  assemblies making up one of the diffusion assemblies mounted on the central module; FIG. 11 is a perspective view from the rear showing the body of a flash engaged on the emission window of the bottom wall of the central module; Figures 12 and 13 are respectively perspective and longitudinal sectional views of an application with a flash of a simplified variant in which only the basic structure of the central body has been shown; Figure 14 is a view similar to that of Figure 12 illustrating an example of a movable filter on the light path; 35. FIGS. 15 and 16 are two illustrative views of specific applications respectively in the field of cameras and

  microwave cooking appliances.

  The invention consists in projecting a controlled and modeled flow of energy into a predetermined space by means of diffusion heads developing around a central module and this in stages, by different zones and by depth distances, using a single source of energy in the form of light, waves or fluids. This way of projecting a flow of energy in space makes it possible to achieve a real multistereo spatial effect. The functional unit according to the invention is a multidirectional composite assembly with central module 1 surrounded by a fixed or movable ring 2 developing around the central module. This ring 2 is formed of a plurality of elementary diffusion heads such as 3. These heads 3 are placed in a radial concentric arrangement around the hollow body 4 of the central module 1. They are expandable in order to increase their optical surface. They can be oriented in order to favor a component of the

projected beam.

  The crown 2 formed of the set of diffusion heads 3 can constitute a separate mechanical assembly having its own relative movement relative to that of the central module 1. It is thus possible to envisage a crown 2 movable in rotation relative to the central module 1 allowing to create periodic spatial effects of modulation by rotation by

example of light.

  The central module 1 is a hollow body of the housing type with a flat and reflective bottom wall 5 and a lateral surface 6 of straight or divergent polygonal section formed by a succession of flat side walls 7 with a reflective inner face and a perpendicular or oblique plane. relative to the wall of

background 5.

  The bottom wall has a central emission-reception opening 8, for example rectangular, serving as an emission window to a surface emitting an energy flow or as a reception window. The upper part of the hollow body is

  covered by a semi-pyramidal cover

  transparent hereinafter called upper pyramid 9 formed of oblique facets 10 transparent or translucent optically treated globally or in places only in order to give them additional properties of reflection or covered and dotted with reflective microsurfaces such as flakes, pastilles, flakes, platelets or other reflective incrustations or added materials in suitable number, arrangement and distribution. The bases of the triangles defining the oblique facets 10 of this upper pyramid 9 each correspond to the length of the upper side of each adjacent side wall 7

  composing the lateral surface 6 of the central module 1.

  The oblique facets 10 of the upper pyramid 9 can be made fixed or removable relative to the central module 1 or optionally retractable for a particular operation without

upper pyramid.

  The interior space of the central module 1 contains a geometric interior reflector assembly 11 in reverse arrangement with respect to the upper pyramid 9 and centered like the latter on the axis

  general 12 of symmetry of the whole.

  The interior reflector geometrical assembly 11 is made up of two parts, a rigid and reflective pyramidal lower part called the horn 13 and a pyramidal upper part deformable by collapsing-extension called pyramid bellows 14 of general shape in truncated pyramid and with reflecting lateral surface. The pyramidal bellows 14 is formed in the case of the exemplary embodiment represented by the succession-superposition of a plurality of pyramidal belts such as 15 forming perimeters in articulated blades of decreasing length fitting into one another to allow a pyramid trunk of variable height to be produced, that is to say to present a small opening 16 of variable surface and a large opening 17 fixed and of constant surface identical in shape and in surface at the base of the upper pyramid 9 for

  come and relate edge to edge on it.

  The pyramidal perimeter sections of the pyramidal bellows 14 can overlap one another until the formation of a pyramid trunk of minimum height or develop in extension until a pyramid trunk of height is obtained maximum planned for the central hollow body 4 taking into account the partial occupation of the interior volume by the

horn 13.

  The rigid pyramid forming the horn 13 has as many facets as the upper pyramid 9, that is to say a number equal to that of the diffusion heads 3. The facets of the horn 13 are not of identical surface. There are facets with large walls 18 and facets with small walls 19. These walls are all fully reflective on their two faces and are oriented in such a way that they each direct the flow of energy emitted from window 8 towards the corresponding diffusion head. The facets with large walls 18 have openings 20 closed partially or completely by movable reflecting shutters such as 21. These shutters 21 are controlled by movement manually or remotely from the outside to more or less or completely discover the openings 20 and thus allow an adjustable part of the flow to the upper pyramid to pass

11 that is to say forward.

  The following indicates a control assembly for moving the flaps 21 in the form of a connecting crosspiece 22 the ends of the branches of which are integral with the planes of flaps 21 and the center of which is movable longitudinally in the direction of the axis general 12 of the assembly by a rod 23 sliding in a tube, the lower end of which is integral with the center of the connecting crosspiece 22 and the upper end of which protrudes from the top of the pyramid by a gripping pin 24 for its actuation in axial movements when opening or closing the shutters. Of course other systems or mechanisms for controlling

  moving the movable flaps are possible.

  This horn 13 constitutes with the bottom wall the optical base of the central module 1. These means are arranged so as to return to the diffusion heads 3 most of the energy flow emitted from the bottom of the central module through the window

8.

  The horn 13 may have a structure

foldable allowing it to be retracted.

  According to an alternative embodiment, the horn 13 is movable for example in rotation about the axis

central 12 of the set.

  According to another variant, there are several interior pyramids with different openings

  succeeding over the entire height of the interior volume.

  The diffusion heads 3 are hollow bodies which communicate with the central module and are mechanically connected with it at the walls

  lateral 7 of its lateral surface 6.

  Each head 3 forms with a connecting barrel 25 a diffusion assembly. The connecting barrel 25 is a hollow body open lengthwise to form a surface 26 of the front facade. It connects each head 3 to the central module 1 in the form of a hollow mechanical support with an articulated base. The head 3 and the barrel 25 form a diffusion assembly 27 shaped as an articulated shell 28 tiltable as a whole. In this assembly there is a tilting structure 29. The shell 28 has rigid or flexible or composite side walls 30 with an alternation of rigid zones and flexible deformable zones for example

regularly distributed.

  Each diffusion head 3 is hollow as well as the corresponding connection drums 25 to constitute a true channel for propagation of the incident energy from the central hollow body 4 to each head 3 but also for dispersion and heat evacuation. FIGS. 6, 7 and 10 show an example of a mechanical embodiment of the articulations of the connection to the central module 1 and of the elementary heads 3 of

diffusion.

  Mechanical achievements may differ widely depending on technological possibilities. The main functions to be performed are as follows. The

  first function is that of transmission-

  reflection from the front face of the diffusion assemblies which for this purpose have a removable surface 31 of translucent facade, punctually reflective and extensible as a whole. It can be simple in one piece or composite in several pieces,

  consisting of one or two translucent walls 32.33-

  reflective facades mounted one 32 movable with the extension of the head relative to the other 33 which is fixed and this by partially overlapping at

  varying degrees depending on the total active area desired.

  The latter is maximum when the head is in the outermost position. The second function is that of multiple articulation which allows the heads 3 and the connecting barrels 25 to switch towards the central module or to move away from it. The third function is that of the internal reflection by zones dotted with elementary reflecting surfaces 34 looking inwards from the heads 3 and from the barrel 25 which the facade walls of the sets of

broadcast 27.

  More particularly, the heads 3 are hollow volumes in the form of a shell 28 with reflective side walls 30 and with translucent and reflective front walls 31. The bottom of the interior volume of each diffusion assembly 27 is occupied by a reflective body 35 formed for example of three planes 36,37,38 pivotally hinged together for example in three places to be able to

  tilting movements of the diffusion head 3.

  The diffusion heads 3 are extended towards the central body 1 with which they are connected by the hollow connecting barrel 25 the end of which is mounted on the adjacent facade of the side wall 7 of the side surface 6 of the central module by the intermediate for example of a mount 39 of the bayonet type as used in photography. However, other removable fixing means may be suitable, in particular those having a degree of freedom in pivoting around the central axis 12 of the connecting barrel 25 in order to give this articulation

multidirectional possibilities.

  A passage 40 provides optical and fluid communication between each diffusion head 3 and the central module 1. These communication passages 40 with the central module 1 open out inside the frames. In the case of an application to light, the section of this passage can be occupied by a transparent or translucent filter 41 fixed or movable by

  drop-down example as shown in figure 14.

  This screen can include patterns, zones or surfaces that change in shape, color, opacity

  and other optical or visual characteristics.

  The facade of each connecting barrel 25 is also provided with translucent and reflective facade walls 32 similar to those described above.

for the heads.

  There are as many diffusion heads 3 as side walls 7 making up the side surface 6

of the central module 1.

  Each mechanical connection to the central module 1 can be made as shown in Figures 6

  and 7 by two distinct and successive articulations.

  It is for example a first articulation 42 for pivoting the head 3 on itself by which the link is mounted on the adjacent wall. It is then a pivot articulation 43 in inclination of the connecting barrel 25 about a transverse axis 44 to the barrel immobilizable in position by a screw 45 on each side. This second articulation 43 is maneuvered by an inclination lever 46. Finally, there is a third articulation 47 for pivoting the head 3 in tilting by which the head 3 can tilt relative to the connecting barrel 25. This third articulation 47 is actuated

  by an upper tilt lever 48.

  The combination of the possible movements by these two articulations with two crossed axes makes it possible to confer on the head 3 a multi-orientation capacity.

equivalent to that of a gimbal.

  Of course these multi-joint

  complex directional can be replaced by an elastically deformable link section by

  twist and bend with retention in the final position.

  To do this, various technological means exist

already on the market.

  A particularly advantageous device allowing optimal control of the quality of the light or of the flow concerned by an adjustment of the total translucent-reflective surface of the facade of the diffusion assemblies 27 consists in the sliding of each of the walls 32, 33 through a slot in the side walls of the shell or sliding integrated in the various walls. This sliding can be done manually, mechanically or electrically. This translucent-reflective active surface is a composition of a set of plates or plates 32 and 33 serving to close off the facade and support a multitude of elementary reflective surfaces such as 34 attached to the rear face of these supports and looking towards the inside of the diffusion head 3 or of the connecting barrel 25 and distributed according to the application. The angle of the elementary reflecting surfaces 34 with the plane of its translucent support depends on the application and

of the desired effect.

  Optionally, the upper surface of the plates or plates 32,33 can also be provided with upper reflective elementary surfaces and / or

translucent and / or diffusing 49.

  According to a variant, it is possible to envisage reflective surfaces 34 or 49 in the form of flakes or free and movable pellets as a function of local excitation from a control signal or any other application of this type. Thus, it may be reflective elementary surfaces 34,49 resting on individual or collective microtransducers by groups of the electromechanical or electromagnetic type or others transmitting to these reflective surfaces 34,49 mechanical vibrations which can come for example from a musical sound . We have thus generated a music-light never seen before. The heads 3 themselves can be vibrating or driven in a synchronized or harmonic movement thus obtaining a basic movement of rhythmic or other ensemble or a global displacement

  bright music in space.

  As seen in FIGS. 11 to 14, one of the applications relates to lighting and in particular the

photographic shooting.

  To this end, the bottom wall 5 of the central module 1 comprises a mechanical assembly 50 for fixing the head of a light source 51, for example that of a flash. This mechanical fixing assembly 50 can be embodied by a conduit or a guide in the form of a tubular receiving body 52 forming a support for engaging the end of the orientable head of a flash housing 53 the face of which before 54 opens from the bottom window 8 inside the central module 1 so as to diffuse the continuous light or the flash of the flash entirely in its

interior volume.

  In the case of application to a built-in flash 55 in a photographic camera 56, as shown in FIG. 15, provision is made to mount the functional unit according to the invention directly on the front protection 57 of the flash or in place of as shown in Figure 15. We can

  also consider integrating it into the flash unit.

  Still in the field of application to flash sources, according to a particular variant of the invention, the diffuser can replace an annular flash. In this variant, the objective of

  the camera will occupy the central location.

  The main material of which the central module 1 and the elementary diffusion heads 3 are made must be suitable for the application. It can result from a massive structure or from an assembly or a joining of flat blades in various materials or materials or they can be pieces shaped by an industrial forming process. Various specific flexible materials are to be mentioned such as textile and / or plastic materials held by a reinforcement

internal or external.

  The functional unit according to the invention has a passive rear face and an active front face determining an energy projection space towards the front and a dead space towards the rear. In order to double the energy radiation field, it is of course possible to combine two units according to the invention back to back. We will thus have radiation

  energy in two opposite directions.

  According to an autonomous variant of the invention, the diffusion unit can contain its own energy source with its own power supply such as one or more cells or batteries or one or more systems for capturing, transforming and accumulating energy to

  away from light and / or heat.

  Of course, the dimensions of the central module 1 and of the heads 3 of the crown 2 are adapted to the use, to the nature and to the power of the energy source. The whole provides in its application to light, a natural light that does not dazzle and considerably reduces shine, reflections, flickers, and all these facts provide an unequaled perception of relief, volume, and life. The quality and realism of the photos are the result of the particularity of the lighting provided by the invention, because the photographic shooting has

  need lighting with directed and controlled light.

  As can be seen in FIG. 5,1 direct flow only very partially arrives on the translucent walls of the heads 3 and of the connecting barrel 25. These are the bellows 14 and the horn 13 with its adjustment devices which allow part of the flow to be directed in different directions towards the eight diffusion heads 3. Once the energy flow is admitted, the whole system rests on the translucent walls 32,33 provided with elementary reflective surfaces 34 which look inward which aim on the one hand to avoid the return of light or other energy flow and on the other hand to fragment it. Of course, as it appears in FIG. 5 illustrating the path of the beam 58, the external reflecting faces of the horn 13 have a

  important role. They distribute the flow spatially.

  The upper pyramid 9 distributes and meshes the central body 1 and channels the mobility of the interior reflector assembly 11 when the flaps 21 are open. Each elementary reflecting surface 34 of the heads 3, inside or on the facade, makes it possible to give rise to an individual brush of light. We thus have like spider webs placed one behind the other on the

  horizontal plane and intersected on the vertical plane.

  One or more translucent-reflective plates or plates 32, 33 can be colored with modification of the color on order or by

  variation of a parameter of the ambient environment.

  An interesting variant of the invention consists either of placing inside the heads 3 or of the central module 1 or of integrating into the walls of the heads of the central module scales of diffusing or reflecting material or of material adapted to the flow concerned, arranged more or less inclined relative to the diffusion face or having precalculated bevel angles in order to reduce and / or orient the components of the flux in fine brushes. These scales have a length and a width adapted to the dimensions of the heads 3 and of the central hollow body 1. These scales

  are made of translucent materials previously cited.

  Reception applications are also possible in which the flash is replaced by a sensor sensitive to the energy flow or replaced by a propagating guide, for example a wave guide or other

  to a reception or detection unit.

  Other applications are also envisaged, including emission applications in which the flash is replaced by another light source or another energy flow: sound, electromagnetic, but also in liquid or gaseous fluid. In applications with fluids, the reflective elementary surfaces of the reflective translucent walls of the facades of the diffusion heads and of the facets of the upper pyramid are replaced by orifices of more or less large section depending on the characteristics of the application and the nature and pressure of the

fluid used.

  It should also be mentioned in addition to all the others mentioned above, applications for cooking using microwave generators (FIG. 16) in which one or more propeller (s) 59 are integrated into the central hollow body 1.

  fan driven (s) in rotation by a motor.

  The unit according to the invention will then advantageously replace the fan disposed at the outlet of the waveguide 60 channeling the microwaves from the magnetron generator 61 to the cooking chamber 62. This variant allows better dispersion of the

  energy flow for improving efficiency.

  It is also possible to envisage applications in interventional or exploratory surgery and in dentistry, to dental lighting incorporated into contra angles, or to lighting fields, tables or

operating seats.

  Mention should also be made of an endoscopy application in which a miniaturized embodiment of the invention can be placed in the terminal area of the light pipe, dividing the incident light into several beams suitably

oriented and distributed.

Claims (17)

  1. Projector diffusing an energy-carrying flux characterized in that it consists of a central module (1) in central hollow body (4) surrounded by a diffusing ring (2) formed of a plurality of diffusion hollow heads (3) in radial and concentric arrangement around the central hollow body (4) and each closed on their front face by at least one through wall for energy, said central hollow body (4) being in internal communication with the internal volume of each of the diffusion heads (3) through a passage (40) passing through the side wall (6) of this central body (4) at the right of the connection of each of the diffusion heads with this central hollow body (4) and in that this central hollow body (4) is occupied by at least one geometric reflector assembly   interior (11) placed in front of a transmission window-   reception (8) which is the central opening provided in   the bottom wall (5) of the central hollow body (4).   2. Diffuser projector according to the resale   dication 1 characterized in that the central opening serving as a window (8) for emission and possibly reception is extended towards the rear by a tubular propagation duct on which the body is fixed   or the emissive or receptive surface.   3. Diffuser projector according to the resale   dication 1 characterized in that the central hollow body (4) has a lateral sectional surface polygonal.   4. Diffuser projector according to the resale   dication 1 or 3 characterized in that the central hollow body (4) is closed on its upper face by a   upper pyramid (9) with translucent facets-   reflective and polygonal-based resting on the upper edges of the lateral surface of the central hollow body.   5. Diffuser projector according to the resale   dication 1 characterized in that the geometrical interior reflector assembly (11) consists of two parts, a rigid and reflective pyramidal lower part called a horn (13) and a part   pyramidal upper deformable by sagging-   extension called pyramidal bellows (14) of general truncated pyramid shape and with reflecting lateral surface, the pyramidal bellows (14) being formed by the succession-superposition of a plurality of pyramidal belts such as (15) constituting perimeters in articulated blades of decreasing length fitting into each other to allow a pyramid trunk of variable height to be produced with small opening (16) of variable surface and large opening (17) fixed and of constant surface identical in shape and in surface at the base of the upper pyramid (9), the large opening of the pyramidal bellows being placed opposite or in contact   with the base of the upper pyramid (9).   6. Diffuser projector according to the resale   dication 1 characterized in that the horn (13) has in at least one of its facets located opposite the internal passages (40) towards the diffusion heads, openings (20) each closable partially or completely by a flap (21) , the opening and closing of all the shutters   (21) being controlled from the outside.   7. Diffuser projector according to the resale   dication 1 characterized in that each of the heads is connected to the adjacent wall of the lateral surface by a barrel (25) of connection with hollow body open in length and with articulated base, each diffusion head (3) being articulated to a barrel (25) connecting by a pivot articulation in inclination and movable in approach and in distance with respect to the barrel, the walls of the interior volume of each barrel and of each   corresponding head being reflective.   8. Diffuser projector according to the resale   dication 1 or 7 characterized in that each head has a translucent-reflective front wall and in that this wall is interchangeable.   9. Projector-diffuser according to the resale   dication 1 or 7 characterized in that each barrel has a translucent-reflective front wall and   in that this wall is interchangeable.   10. Projector-diffuser according to the resale   dication 8 or 9 characterized in that the total translucent-reflective surface increases or decreases by the movement of moving away or moving closer to the head compared to the barrel.   11. Diffuser projector according to the resale   dication 8 or 9 characterized in that the translucent-reflective walls are flat supports of translucent material dotted with elementary surfaces   reflective looking inward.   12. Diffuser projector according to the resale   dication 11 characterized in that the plane of the elementary reflecting surfaces is not parallel to the   plane of supports planes of translucent walls.   13. Diffuser projector according to the resale   dication 7 characterized in that the interior volume of the barrel-head assembly (27) is occupied at least at its bottom by a mirror with multiple planes hinged together.   14. Projector-diffuser according to the resale   dication 1 characterized in that the central hollow body (4) is occupied by at least one fan propeller   connected to a drive motor.   15. Diffuser projector according to the resale   dication 1 characterized in that the diffusing projector is doubled by a second diffusing projector, the two being assembled back to back with a common energy input in order to project the energy in the front space and in the rear space by report to the emission plan of one of the emission windows.   16. Diffuser projector according to the resale   dication 1 characterized in that the crown (2) formed by the plurality of diffusion heads (3) is   rotated around the central module (1).   17. Projector-diffuser according to the resale   dication 1 characterized in that the section of at least one through passage (40) is occupied by a filter (41) fixed removable or scrollable.