RU2181507C2 - Stroboscopic projection device - Google Patents

Abstract

FIELD: programmed electronic- mechanical stroboscopic projection equipment. SUBSTANCE: invention is designed for volumetric-dynamic visualization of predominantly of advertising messages in the form of texts and/or pictures. Proposed device has at least one carrier of assemblage of light sources arranged over its outside surface coupled by shaft to rotation drive, control unit. All light sources are point light sources and their carrier is put on shaft and has form of rod which has shape of generating line of suitable body of revolution, thickness commensurable with cross-section of point light source and width sufficient for disappearance from field of vision of viewer with rotation. Optical axis of each point light source is oriented towards normal to generating line of that body of revolution which is specified by form of rod-carrier of these light sources. EFFECT: design of programmable stroboscopic projection device securing visualization of advertising messages with effect of their free soaring ( suspension ) in space. 15 cl, 24 dwg

Description

 The invention relates to structural diagrams and design of programmable electronic mechanical stroboscopic projection devices for volume-dynamic visualization of mainly advertising messages in the form of texts and / or images. Such devices can be used in outdoor and indoor light advertising, preferably at public service enterprises and at exhibitions and fairs to attract buyers and visitors.

State of the art
The stroboscopic effect on which cinema and television are based is phenomenologically known to the overwhelming majority of people (see, for example, the Big Polytechnical Dictionary. - Moscow: Scientific Publishing House "Big Russian Encyclopedia", 1998, p. 507).

 In cinema, it is realized by moving the film as a carrier of figurative and / or textual information in front of a light source that sequentially projects individual frames onto the screen with a frequency exceeding the inertia of the perception of the human eye (≈0.1 s). In this case, a moving or stationary image may be observed on the screen. Similarly - in the sense of staffing - they form images in television sets and on personal computer displays.

 However, the use of pre-shot films or videos for advertising purposes, for example, at exhibitions and fairs, has long been familiar to visitors and therefore attracts, as a rule, specialists to watch.

 This is enough to advertise industrial equipment or materials, but obviously not enough to massively attract customers to stores and catering establishments and to advertise at mass trade shows and fairs.

 Moreover, only on PC displays, using modern animation programs, it is possible to relatively quickly rebuild the information content of advertising, and ordinary film and television programs have to be monotonously repeated throughout the entire exposure time of the advertised goods.

 Therefore, recognized professionals in advertising such as K.BOVE and W.ARENS (see Contemporary Advertising, 5nd Ed., Richard D. Irwin, Inc., 1994) note that there is a need for publicly available programmable tools that may be easily rebuilt to display frequently changing advertising messages, still remains unsatisfied to a sufficient extent.

 So, this need cannot be fully satisfied by the well-known programmable matrix projection matrix devices such as "running line" or the type of multi-screen television advertising complexes.

 Their basis is usually a massive and bulky frame, on the front side of which in one or several rows are mounted from several hundred to several thousand light sources (hereinafter abbreviated IP). These ICs are connected to a power source, for example, through such a very complex switching control device, which is known from US Patent 4967373.

This device, designed in particular for controlling a multi-color matrix projection complex, has:
microprocessor,
a block of address storage cells and a block of data storage cells, in which each cell is connected to the specified microprocessor,
a block of video memory cards in which each board is connected to the address storage cells and data storage cells,
a block of graphic data control loops, in which each loop is connected to the corresponding data storage cells and address storage cells to receive video memory from the indicated video cards, which should be shown by a matrix projection device,
contours of addresses and data are connected to the indicated microprocessor and blocks of cells for storing addresses and data for switching the indicated block of video memory cards with the block of graphic data control loops by microprocessor commands and
a switch that is connected to the block of graphic data control loops for converting the received images into electrical control signals of the specified projection complex.

 It is clear that matrix projection devices are effective for express transmission of news and advertising information on the streets and squares of megacities.

 However, advertising calls to streams of random people are ineffective, and the price of messages is too high for targeted attention to the goods and services of mass demand, which are usually produced by disparate small businesses.

 Therefore, the need to create simple, cheap to manufacture and easy to use projection devices remains relevant.

Of the devices of this type, by technical nature, the proposed closest stroboscopic projection device is no US Patent 4689604. It has:
IP carrier in the form of an annular drum;
a rotation drive kinematically connected by a shaft to the indicated IP carrier;
three vertical panels located on the outer side surface of the drum, each of which is equipped with a plurality of ICs arranged in the form of demonstration columns;
a microprocessor-based IC control unit, which is equipped with a position sensor for the IC carrier drum, a synchronizer and software for recording texts and / or images to be displayed and processing the recorded data to generate commands for turning the IC on and off.

 During operation of such a device, advertising messages are moved relative to the drum in a direction that is opposite to the direction of its rotation. In this case, the complete message may consist of many frames. The length of each of the frames shown is less than the circumference of the drum and is limited by the initial column of the IP and, after some interval, the final column of the IP. The position sensor starts the microprocessor, which generates a sequence of synchronization signals, a single one for each of the moving demonstration drum IC speakers. For each revolution, the microprocessor sets the control sequences of the IP panels with the synchronization of their glow in each demonstration column.

 In the described device, the visualization of texts and / or images occurs directly on the background of a clearly visible drum, which significantly reduces the effectiveness of advertising. Indeed, visitors to exhibitions and fairs and buyers have long been accustomed to luminous inscriptions and images on arbitrary media. Therefore, in cases where the search for goods and services of mass demand is not targeted, they usually do not perceive the advertising information addressed to them.

SUMMARY OF THE INVENTION
The basis of the invention is the task of changing the composition and structure to create such a programmable stroboscopic projection device that would provide the visualization of advertising messages with the surprising effect of their "free floating (hanging) in space."

This problem is solved in that in a stroboscopic projection device having:
at least one IP medium;
a rotation drive kinematically connected by a shaft to the indicated IP carrier;
a plurality of ICs located on the outer surface of said carrier;
an IC control unit based on a microprocessor, which is equipped with a position sensor of the specified medium, a synchronizer and software for recording texts and / or images to be displayed and processing the recorded data to generate commands for turning the IC on and off,
according to the invention
a) all IPs are made point;
b) the carrier of point ICs is cantilevered on the shaft of the rotation drive and is made in the form of a rod, which has:
the shape of the generatrix of a suitable body of revolution,
thickness commensurate with the transverse dimension of the point IC, and
the width measured in the radial direction, sufficient for the disappearance of such a rod from the field of view of the observer during rotation; and
c) the optical axis of each point IC is oriented in the direction normal to the generatrix of that body of revolution, which is given by the selected form of the carrier rod of these IPs.

 Point ICs in such a device can be, for example, well-known to specialists and publicly available LEDs and / or ends of optical fibers.

 Since thin point-carrier ICs removed from the geometrical axis of the drive shaft during rotation disappear from the field of view of observers, the combination of features described above provides the illusion of free-floating volumetric advertising messages displayed in the air. Therefore, even for people knowledgeable in optics, these messages at the first moment seem especially mysterious and attractive. At the same time, by choosing the form of the body of revolution that is suitable for the needs of a particular advertiser, various advertising effects can be provided. For example, the carrier rods of point ICs in the form of a circular arc or an ellipse arc respectively allow static or dynamic advertising messages to be displayed on an invisible surface of a sphere or ellipsoid. Some other forms of these rods indicated below can provide such holistic free-floating volumetric images that will take the form of a vase, a teapot, a decaying fountain jet, etc.

 It is in the effect of free soaring that the fundamental difference between the light effects achieved with the proposed device and the similar effects achieved with the help of laser show systems popular in the show business, which leave clearly visible light paths in the air, extending from laser projectors to images, lies in the principle.

The first additional difference is that:
a) the thickness m of the carrier rod of the point IC is selected from the condition
d _tec <m≤9d _tec ,
where d _tis is the transverse size of the light-emitting surface of a point IC;
b) the width B of the carrier rod of the point IC is selected from the condition
B≤0.1R _max ,
where R _max is the radius of the circle described by that point IC that is as far as possible from the geometric axis of the drive shaft.

Compliance with the specified size ratios guarantees the effect of advertising messages at frame rates generally accepted for stroboscopic projection devices in the range of 16-25 s ^-1 or more.

 The second additional difference is that on the shaft of the drive of rotation opposite to the above-mentioned rod-carrier of point ICs in the same geometric plane as the balancer is cantilevered. Thereby (especially under wind loads) the stability of the carrier rod of the point IC during rotation increases.

 The third, additional to the second difference, is that the balancer is also made in the form of a rod, which has the form of a generatrix of a suitable body of revolution and is equipped with point ICs connected to the control unit from the outside. Thus, it is possible to create an arbitrary and optionally changing color background for the displayed advertising message or to combine different parts (for example, image and text) of the same advertising message. Moreover, depending on the desired additional advertising effects and guided by the principles of balancing known to specialists in theoretical mechanics, the geometric shape, mass and distance of such a balancer from the geometric axis of the shaft can be widely changed. In particular, from the point of view of ease of manufacture and installation, a balancer in the form of a straight vertical protrusion is preferable, although it is clear that other forms are possible.

 The fourth, additional to the third difference is that the main carrier carrier of the point ICs and / or the balancer are additionally equipped with point ICs from the inside, facing the geometric axis of rotation of the shaft.

 This allows you to add relief to the volume of luminous advertising messages, if additional point ICs are installed only on the inner side of the main carrier bar, or the effect of lightly shading text information displayed through the IC on the outside of the main carrier bar, if additional point ICs are also installed on the inside side of the balancer.

The fifth additional difference is that in the geometric planes located at an angle to the geometric plane of the location of the specified rod carrier of the point IC, selected in the range 0 ^° <φ <180 ^° , at least one additional carrier rod located with external side and connected to the control unit point IC, having the form of a generatrix of the body of revolution.

In this case, the stroboscopic effect is achievable with the lower shaft speed compared to the generally accepted minimum level of 16 s ^-1 , the more additional carrier rods of point IC will be installed on the common shaft, preferably at equal angular distances from each other.

 The reduction in mechanical (including aerodynamic) loads on the main and additional carrier rods, achieved with a decrease in the rotational speed, can significantly increase the radii of circles described by those point ICs that are maximally distant from the geometric axis of the drive shaft on each carrier rod. With such an increase in these radii, the sizes of advertising messages soaring in the air significantly increase and the effectiveness of their impact on potential consumers increases.

The sixth, additional to the fifth difference is that the main and additional rod-carriers of point ICs are made identical in shape and size and are located at angular distances that are multiples of about 45 ^o . This form of execution is the easiest to manufacture and creates the most favorable conditions for balancing inert masses.

 The seventh, additional to the fifth or sixth difference consists in the fact that each carrier carrier of point ICs has a cantilever-mounted balancer located opposite to it and located in the same geometric plane. As already noted above, this increases the stability of the carrier rods of point ICs during rotation, which is especially important during wind loads.

 The eighth, additional to the seventh difference is that each balancer has the shape of a generatrix of a suitable body of revolution and is equipped with point ICs connected to the control unit from the outside. Thus, during the demonstration, it is possible to create and optionally change the combined color background of the advertising message or to combine different parts (for example, image and text) of the same advertising message with the color change during the demonstration.

 The ninth additional difference is that the stroboscopic projection device is equipped with at least one additional shaft of the rotation drive, which is spatially remote from the first shaft and synchronized with it in rotation frequency by suitable means and on which at least one console is also fixed a carrier rod of a point-like IP having the shape of a generatrix of a suitable body of revolution.

 Such an increase in the number of spatially spaced and equipped with their own carrier rods of point IC shafts of rotation drive allows you to significantly expand the arsenal of means of advertising exposure to potential consumers of goods and services.

 The tenth, additional to the ninth, difference is that the main shaft and at least one additional shaft of the rotation drive are connected to a common engine by a synchronizing mechanical transmission. Publicly available examples of such transmissions may, for example, be gear or chain transmissions well known to those skilled in the art. When using them, electronic on-off control of point ICs driven by rotation by different shafts will be the simplest.

The eleventh, additional to the ninth or tenth difference, is that each pair of adjacent parallel mounted shafts is phase-synchronized, and the distance A between them satisfies the condition
A <maxR _i + maxR _{i + 1} ,
where maxR _i + maxR _{i + 1} is the sum of the radii of the circles described by those point ICs that are maximally distant from the geometric axes of the corresponding shafts.

 As is clear from the above, each of these shafts has its own carrier rods of point ICs. These rods can be different, and preferably the same in shape, of the forming bodies of revolution, and even the rods of the same shape can be different in linear dimensions. In this case, depending on the visualization programs, gradual or instantaneous mutual transitions and interpenetration of parts of advertising messages from the surface described by one rod to the surface described by another rod, including with the additional effect of color mixing, are possible.

 The twelfth, additional to the eleventh difference, is that the stroboscopic projection device is equipped with more than two parallel mounted shafts, each of which has the same shape in shape and equally oriented in the initial angular position of the carrier rods of point IC.

 Thus, on consecutively soaring in space and complementing one another mainly cylindrical surfaces invisible to consumers, which essentially form a wave-like “screen”, large and therefore prominent from afar advertising messages can be displayed.

 The thirteenth, additional to the twelfth, difference is that on each, except the first and last shaft, along with the main rod-carrier of point ICs, an additional direct rod-carrier of point ICs of a larger radius is installed, and only short rods are installed on the first and last shafts carriers of point ICs that coincide with the main carrier rods in shape, size and angular position.

An advantage of this particular embodiment of the invention is as follows. Short rods-carriers of point ICs provide the formation of the main “invisible” advertising screen that is invisible to the consumer. Long rod carriers of point IC provide the formation of an additional "screen", which also freely floats in the air equidistant to the main "screen". An advertising message on an additional "screen" can be displayed both simultaneously with the filling of the main "screen", and separately with a speed regulated by the advertiser. Both "screens" can be used both for duplicating or showing different parts of the same advertising message to be simultaneously perceived in the desired color scheme, and for displaying different advertising messages that can be separately perceived at viewing angles from 35 ^o to 75 ^o relative to the normal to the surface of any "screen".

 The fourteenth, additional to the ninth, difference is that the stroboscopic projection device is equipped with two coaxial shafts mounted with an axial gap, with each of which at least one carrier carrier of point ICs, having the shape of a generatrix of a suitable rotation body, is cantilevered, and these carrier rods are installed in the specified interval between the shafts.

 Such a design ensures the complete interpenetration of volume luminous advertising messages or the absorption of one such message by another message at the desired speed.

 The fifteenth, additional to the fourteenth, difference is that the coaxial shafts of the rotation drive are connected to the common motor by a synchronizing mechanical transmission, and this transmission is equipped with a regulator of the axial gap between the shafts. Thus, in the process of displaying, relative mechanical rendezvous-removal of parts of the same or complementary advertising messages is ensured, which additionally attracts the attention of buyers of goods or consumers of services.

Brief Description of the Drawings
Further, the invention is illustrated by a detailed description of the design and operation of the proposed device with reference to the drawings, which depict:
FIG. 1 is a generalized structural diagram of a stroboscopic projection device with one shaft of a rotation drive and opposite to one another, the main carrier carrier of point ICs and balancer with such ICs, different in shape and size, cantileverly mounted on it;
FIG. 2 is a simplified geometric diagram of the relative positioning of point ICs on the main carrier rod and the balancer, which are shown in FIG. 1 (side view);
FIG. 3 is a top view of the main core carrier of the point ICs and the balancer, which are shown in FIG. 1;
FIG. 4 and 5, 6 and 7, 8 and 9, 10 and 11, 12 and 13 examples of possible forms of carrier rods of point ICs and, accordingly, rotation bodies described by them;
Fig. 14 is a schematic example of fixing point ICs on the external and internal surfaces of the main carrier rod and the balancer, which are cantilevered opposite to one another on one drive shaft;
FIG. 15 is a diagram of the relative positioning of a point IC according to FIG. 14 with an indication of geometric parameters (side view);
FIG. 16 is a diagram of the relative positioning of the point ICs according to FIG. 14 with an indication of the offset angle of the parts of the advertising messages when the shaft rotates (top view);
FIG. 17-19 geometric diagrams of the preferred relative position of one, two and three pairs of main carrier rods of point ICs and balancers fixed on the same shaft (top views);
FIG. 20 diagram of a stroboscopic projection device with two parallel shafts of a rotation drive (plan view);
FIG. 21 is the same as in FIG. 20 (side view with a simplified drive circuit and an interpenetration diagram of advertising messages);
FIG. 22 diagram of a stroboscopic projection device with many parallel shafts (side view);
Fig.23 is the same as in Fig.22 (top view with part of the housing);
24 is a diagram of a stroboscopic projection device with two coaxial shafts (side view).

BEST MODES FOR CARRYING OUT THE INVENTION
The proposed device in the simplest and most commonly used form of the invention (Fig. 1) has:
preferably a hollow body 1 for accommodating most of the following blocks and assemblies and means for their connection;
rotation drive 2, which is rigidly fixed in the housing 1;
at least one output shaft 3 of said rotation drive 2;
at least one carrier rod 4 of a plurality of point ICs 5 located on its outer surface, for example, publicly available LEDs or ends of optical fibers;
an on-off control unit 6 for point ICs 5, which are connected to this unit 6 through a suitable switch, not particularly shown, and
a power supply 7, to which a rotation drive 2 is connected via a control unit 6, and which, if necessary, can be equipped with a suitable standard voltage regulator from among those available on the market.

 The carrier rods 4 can have the balancers 8 described in detail below, which, if desired, can also be equipped with point ICs 5.

 The rotation drive 2 is usually based on at least one electric motor, which, if necessary, can be equipped with a gearbox and other means such as mechanical gears of rotation to two or more output shafts 3. The electric motor can be easily selected by specialists from among those available on the market, and the gearbox and mechanical gears can be designed and manufactured by well-known methods. Therefore, the listed nodes of the rotation drive 2 are clearly not shown and are not indicated in the drawings.

 The control unit 6 can be made on the basis of suitable microprocessors, a position sensor of the specified carrier rod 4 and the synchronizer. These nodes are also not particularly shown in the drawings, because they are available on the market and can be easily selected by specialists. In particular, the basis of block 6 can be a switching control device, which is similar to the aforementioned device according to US Patent 4967373.

 It is understood by those skilled in the art that the control unit 6 is equipped with hardware and software sufficient to record the advertisements to be displayed in the form of texts and / or images and process the recorded data to generate commands for turning on / off the point IC 5. In this case, the synchronization function can also be implemented directly by the microprocessor using appropriate software.

It is also clear that the software provided with the device according to the invention is always prepared taking into account the specific form of the invention. Examples of factors, separately and jointly taken into account in programs, can serve:
the shape and dimensions of each carrier rod 4,
the number and spatial relative position of the carrier rods 4 and the balancers 8, equipped with point IS 5, on each individual shaft 3 of the rotation drive 2,
the number and spatial relative position of the shafts 3 of the drive 2 rotation,
the type, quantity and color of the dotted IC 5 located on each carrier rod 4 or balance beam 8,
types of data used in advertising messages in relation to individual national or product segments of the world market,
the number of simultaneously displayed advertising messages.

 In the simplest case (see the left parts of FIGS. 1 and 2), one carrier rod 4 is cantilevered on the shaft 3 of the rotation drive 2. It has the shape of a generatrix of a suitable body of revolution, a thickness commensurate with the transverse dimension of the point IS 5, and such a radially measured width that is sufficient for this carrier rod 4 to disappear from the observer's field of view when the shaft 3 rotates.

 The optical axis of each point IC 5 is oriented in the direction normal to the generatrix of that body of revolution, the shape of which has the corresponding carrier rod 4 (see figure 2). In this case, for high-quality visualization of volumetric objects such as a ball, the IS 5 must be positioned on the carrier rod 4 so that their geometric axes intersect near the geometric center of the ball with an error (in the angle of the divergence sector) of not more than 5%.

 It is desirable that on the shaft 3 of the rotation drive 2 opposite to the specified carrier rod 4 in the same geometric plane, as can be seen on the right parts of FIGS. 1 and 2, and especially in FIG. 3, a balancer 8 is cantilevered. It can be made in the form of an arbitrary shape of the load, balancing the carrier rod 4. However, it is preferable that the balancer 8 (see Fig. 1 and 2) was made in the form of an additional carrier rod located on its outer side point IC 5. Such a balancer 8 can have the same as the main rod-nose body 4, and another form of the generatrix of the body of revolution and preferably should be located at a greater than the carrier rod 4, a distance from the geometric axis of the shaft 3, as can be seen in Fig.3.

It is also desirable that the thickness m (see FIG. 3) of the carrier rod 4 or supporting additional point IC 5 of the balancer 8 be selected from the condition
d _tec <m≤9d _tec ,
where d _tis is the transverse size of the light-emitting surface of the point IC 5, and the width B (see _figure 2) of the carrier rod 4 was selected from the condition
B≤0.1R _max ,
where R _max is the radius described by that point IC 5, which is as far as possible from the geometric axis of the shaft 3 (see figure 2).

Abstract examples of forming bodies of revolution can serve:
straight - for a cylinder or cone;
circular arc - for a sphere;
arcs of other preferably smooth curves such as ellipse, hyperbola, parabola, etc. respectively for an ellipsoid, hyperboloid, paraboloid, etc., and
arbitrary combinations of straight lines and / or arcs of the same and / or different curves.

 Some specific examples of the possible shapes of the forming bodies of revolution for the main carrier rods 4 are shown in FIGS. 4, 6, 8, and for combinations of such rods 4 with balancers 8 carrying their own point ICs 5, in FIGS. 10 and 12. Corresponding to them rotation bodies are visible in FIGS. 5, 7, 9, 11 and 13.

Among simple examples of carrying out the invention, it is especially worth highlighting the variant according to both (left and right) parts of FIGS. 1 and 2 and FIGS. 10 and 11. As can be seen in FIGS. 1, 2 and, especially, 10, the point IC 5 on the main rod media 4 cover an angle of more than 90 ^o , and preferably about 180 ^o , while on the balance beam 8, this angle is usually selected in the range from 10 ^o to 40 ^o . In this case, the point IC 5 is preferably located on the balance beam 8 so that they are approximately opposite to the corresponding IS 5 in the middle part of the main carrier rod 4.

 Of course, the above examples in no way limit the list of possible forms of forming bodies of revolution, which can be selected and others, taking into account the wishes of specific advertisers.

 A more complex version of the device according to the invention is also possible. In it, at least one carrier rod with the inner side facing the geometric axis of rotation of the shaft 3 of the side (see Fig. 14) is additionally equipped with point ICs 5. It does not matter if this is only the main carrier rod 4 or only balancer 8, or both of them.

 Any carrier rods 4 point IC 5 and any balancers 8 can be cantilevered to the output shafts 3 either directly or using brackets that are free of point ICs. Examples of such brackets that are not specifically designated, which are parts of the balancers 8, are shown in FIGS. 1 and 2, 10 and 12. But in any case, it is preferable that said joints be detachable to facilitate the repair of the carrier rods 4 of the point 5 IC and the balance 8 replacing one such part with another.

It is advisable (see FIGS. 18 and 19) that at least one additional carrier rod 4 ′ (4 ’) and is located in geometric planes located at an angle φ to the geometric plane of the location of the main carrier carrier 4 point ICs etc.) of a point IC 5, which also has the form of a generatrix of a suitable body of revolution, such an angle should be chosen in the interval 0 ^° <φ <180 ^° .
It is also desirable that the main 4 and additional 4 '(4 ", etc.) carrier rods of point IC 5 have the same shape and linear dimensions and are located at angles that are multiples of approximately 45 ^o . It is naturally desirable that each such a carrier rod 4, 4 ', 4 "had its own balancer 8 (8', 8", etc.) cantileverly mounted on the shaft 3 opposite to it and located in the same geometric plane, having the shape of a generatrix of a suitable body of revolution and equipped with external connected to the block 6 control point IC 5 . In this case, the balancers 8, 8 ', 8 "can be identical to the corresponding carrier rods 4, 4', 4" in shape, linear dimensions and the number of point IC 5.

 Since with an increase in the number of pairs of such carrier rods and balancers fixed on one shaft 3, it becomes possible to provide a stroboscopic effect with a significant decrease in the speed of rotation of the shaft 3 and the moments of inertia of the rotating parts, insofar as the diameter of the bodies of revolution described by point IS 5 can be significantly increased . Naturally, to increase the rigidity and stability with such an increase in diameters along the upper parts of the carrier rods 4, 4 ', 4 "and the balancers 8, 8', 8" additional mechanical bonds not shown in the drawings can be applied.

From the point of view of ease of installation, maintenance and repair, it is also advisable that all carrier rods 4, 4 ', 4 "point IC 5, including balancers 8, 8', 8", which simultaneously serve as carriers of such IC 5, be of the same type designs, namely:
had unified sockets for mounting point-type IC 5 in the form of LEDs or for fixing the ends of fiber optic fibers;
had grooves or through holes communicating with said sockets for laying bundles of electric wires to LEDs or bundles of optical fibers.

 In particular, the carrier rods of the point IC 5 can be in the form of straight or curved tubes with holes-nests in the walls. Since the indicated design features of the carrier rods of point IC 5 are obvious to specialists in laying electrical or fiber optic bundles with taps, they are not discussed in detail in this description.

 To significantly expand the arsenal of advertising means, the device according to the invention (see FIGS. 20 and 24) can be equipped with at least one additional shaft 3 'of the rotation drive 2. This shaft 3 'is spatially remote from the first shaft 3, synchronized with it in rotation frequency by suitable means, and is also equipped with a cantilever fixed at least one carrier rod 4 of a point IC 5 having the shape of a suitable body of revolution.

 It should be clear that in these figures two shafts are shown only to facilitate the perception of the possibilities of implementing the inventive concept, but in reality the number of shafts may be larger.

 In some embodiments of the invention (see FIG. 20), it is preferable that the main and at least one additional shafts 3 and 3 ′ be parallel and connected to a common motor of the rotation drive 2 by a synchronizing, for example, gear or chain, mechanical transmission 9 ( see Fig.21 and 22).

It is clear that the distance A between the geometric axes of each two adjacent parallel shafts 3 _i and 3 _{i + 1} can be selected in a very wide range. So, it can be known to be larger than the sum or equal to the sum (maxR _i + maxR _{i + 1} ) of the radii of circles described by those point ICs 5 that are maximally distant from the geometric axes of the corresponding shafts.

Moreover, the device according to the invention, in which A≥maxR _i + maxR _{i + 1} , is all the more preferable for simultaneous display of independent advertising messages, the more the value of A exceeds the specified amount.

However, as will be shown below in the description of the work, for advertising purposes, cases are particularly interesting when each pair of adjacent parallel mounted shafts 3 _i and 3 _{i + 1} is phase locked and the distance between them satisfies the condition A <maxR _i + maxR _{i + 1} .

 In this simplest case, which is shown in Fig. 21, it is desirable that the main 4 and additional 4 'carrier rods of point ICs 5, having predominantly different linear dimensions, be mounted cantilever in pairs, preferably at right angles to one another. In particular, the main rods 4 may be in the form of arcs of circles of different diameters, and the additional rods 4 'may be in the form of segments of vertical lines. It is also desirable that the said rods in each pair were provided with common balancers 8 on short brackets.

 In more complex private embodiments of the invention (see FIGS. 22 and 23), the device is equipped with more than two parallel mounted shafts 3. Each of them has the same and equally oriented in the initial position, the straight carrier rods 4 point IC 5.

Moreover, it is advisable that:
on all the intermediate shafts between the first and last shafts, along with the main carrier rod 4, a larger additional direct carrier rod 4 'of point IC 5 was installed, and
on the first and last shafts 3, only such carrier rods of point IS 5 were installed that coincide with the main carrier rods 4 in shape, linear dimensions and angular position.

 In yet another particular embodiment of the inventive concept (see FIG. 24), the proposed device is provided with two coaxial shafts 3 sequentially mounted with an axial gap. At least one carrier rod 4 of point 5 is cantilever connected to each such shaft 3 the shape of the generatrix of a suitable body of revolution, and these carrier rods 4 are installed in the indicated gap between the shafts 3.

 To obtain additional optical effects, it is desirable that these coaxial shafts 3 of the rotary drive 2 are connected to a common motor by a synchronizing mechanical gear and that this gear is equipped with a regulator 10 of the axial gap between the shafts 3.

 It should be clear that, along with the examples of parallel and coaxial arrangement of the shafts 3 in one plane, other forms of implementing the inventive concept are possible. So, it is possible that several parallel shafts 3 are located at the vertices of an arbitrary (and not necessarily equilateral) polygon. In this case, depending on the desired optical effects, such an arrangement of at least two shafts 3, in which their geometric axes lie in the same plane or in different planes and are located at a certain angle to one another (respectively, intersecting in one point or crossing).

 It is also clear that to connect the point IC 5, made in the form of LEDs, to the power supply unit 7, a control unit connected to the output of the control unit 6, not shown, which is clearly suitable for the electromechanical switch, made, for example, in the form of a “brush-ring” set, can be used in where the number of pairs of these elements is equal to the number of point ICs installed on the corresponding shaft 3. Similarly, when using the ends of fiber optic optical fibers as point IC 5, suitable optoelectronic switches can be used .

 A stroboscopic projection device according to the invention operates as follows.

 Regardless of the particular embodiment of the device, an advertising message is first introduced into its microprocessor-based control unit 6. To do this, use ordinary hardware such as a keyboard (for texts), a scanner (for images), or PC drives (for advertising messages of any kind pre-recorded on floppy disks), etc. Further, this block 6, taking into account some or all of the above factors, taken into account by the control software, among which the number and initial position of the carrier rods of point IC 5 always appears, forms a sequence of commands for turning them on and off and a signal that the device is ready to start.

 When the drive 2 is turned on, the control unit 6 controls the rotation of the output shaft 3 and, after it reaches the set speed, processes the indicated sequence of commands. If there are several such shafts 3, then the demonstration of advertising messages begins after all these shafts have reached the operating mode.

 The main demonstration effect of hanging at least one advertising image and / or text in space on an invisible consumer medium also does not depend on the particular form of the device and is achieved in all cases, since the change of “frames” occurs at a speed exceeding the inertia of the human eye.

In the simplest case (see Figs. 1-3, without taking into account the point IC 5 on the balance beam 8 and Figs. 4-9), this effect can be observed in its pure form. Indeed, when a thin carrier rod 4 is rotated at a speed of ≥16 s ^-1, it is guaranteed to disappear from the observers' field of view, and luminous letters or lines formed by outbreaks of groups of point 5 synchronized with rotation flash “hang” in space and actively attract the attention of potential consumers of advertised goods or services.

This suspension effect is all the more surprising, the closer the thickness m of the carrier rod 4 to the transverse dimension d _{tis of the} light-emitting surface of the point IC 5 and the smaller the width B of this carrier rod 4 in comparison with the radius R _{max of the} circle described by that point IC 5, which as far as possible from the geometric axis of the drive shaft 3.

 When using more complex designs, this suspension effect can be supplemented by other lighting effects, which even more attract the attention of observers.

 For example, during the operation of the device according to figures 1-3 (but provided that the balancer 8 is equipped with its own point ICs 5, as emphasized in figure 10), these additional point ICs 5 create an invisible tape during operation, also encircling an invisible body of revolution described by the point IC 5 on the main carrier rod 4 (see Fig. 11). On such a combination of a rotation body and a ribbon, it is possible to show the complementary parts of the same advertising message in different ways or simultaneously display different advertising messages superimposed on one another.

 Naturally, due to the smaller number of dotted IPs 5 on the balancer 8, the invisible tape usually serves to display texts or simple images, preferably in the creeping line mode, and the invisible rotation body is used to display substantially more complex advertising messages or parts thereof.

 Even more complex lighting effects are provided by the device according to the invention, in which point ICs 5 are additionally installed on the inside of the carrier rod 4 and / or the balancer 8 (Fig. 14). With its help, you can either add relief to voluminous figurative advertising messages (usually when highlighting the main image formed by flashes of point ICs 5 on the outside of the carrier rod 4, flashes of such ICs on its inside), or slightly obscure text advertising messages (usually with a certain the order of inclusion of point IS 5 on both sides of the balancer 8).

 These additional effects are due to the fact that the point IC 5 on the inner side of the carrier rod 4 or the balancer 8 when the shaft 3 rotates seem to the observers offset by a linear distance x and angle α relative to the point IC 5 on their outer side (see Fig. 15 and 16 ) It is clear that the values of x and α will be the larger and, accordingly, the relief or shading will be more noticeable, the wider in the direction along the radius there will be a corresponding carrier rod 4 or a balancer 8.

 The use of two or four pairs of carrier rods 4 of point IS 5 fixed on one shaft 3 (see Figs. 18 and 19, respectively, in comparison with Fig. 17) allows halves or three times to decrease the number of revolutions of the shaft 3. The flicker possible with this decrease in angular velocity carrier rods 4 point IC 5 successfully masked by the saturation of advertising messages, for example, decorative details and significant (up to 1 m or more) the size of the displayed texts and / or images.

The device according to Fig. 21, in which a pair of parallel shafts 3 _i and 3 _{i + 1} is phase locked and located with a center distance A <maxR _i + maxR _{i + 1} , capable of providing yet another unusual and particularly attractive interpenetration effect when displaying advertising messages and / or transfer of volumetric luminous images and texts (see FIG. 22). Interpenetration and / or transfer can occur at different speeds depending on the program used by the control unit 6. Their effect on the observers is enhanced by mixing and / or alternating the colors of flashing point ICs 5 and when using different shafts 3 of different sizes of carrier rods 4 and / or balancers 8 equipped with point ICs 5.

 The device according to Fig.22 allows you to create a wave-like (see Fig.23) "screen", invisible to observers, on which displayed advertising messages are moved or recorded. Indeed, with the in-phase rotation of more than two parallel shafts 3, the same straight carrier rods 4 of the point IS 5 form an aggregate of cylindrical surfaces invisible to observers. Therefore, on the whole such surface or on any part of it, it is possible to show either complementary to one another oscillating in space parts of the same advertising message, or at least once to wave-wise move the advertising message along the "screen". Naturally, with appropriate software, the direction and / or speed of movement of advertising messages or parts thereof can be set arbitrarily.

The combined use on all intermediate shafts 3 of longer additional straight carrier rods 4 'and on the first and last shafts 3 of the same point IC 5 identical with the main additional carrier rods 4 allows you to create two invisible to the observers equidistant freely floating in the "screen" space and
or form on each "screen" different complementary to one another (in particular, figurative and text) parts of advertising messages that are simultaneously visible to the same observer at an angle deviating from a straight line in the range of approximately ± 45 ^o ,
or show on different "screens" different advertising messages that are simultaneously visible to different observers from different angles.

 And finally, the device shown in Fig.24, allows you to change the height of the same or the depth of interpenetration of different advertising images in the process of their display. To do this, it is sufficient to periodically switch the controller 10 to increase-decrease the axial gap between the coaxial shafts 3.

 In conclusion, it should be noted that in any particular embodiment of the inventive concept, due to the vanishingly low inertia of the point IC 5 at a constant angular velocity of the shaft (or shafts) 3 of the rotation drive 2, it is possible, using software, to change the speed and / or direction over a wide range visualization of any advertising messages.

Industrial applicability
The proposed device can be easily manufactured industrially and is available to mass advertisers represented by representatives of small and medium-sized businesses. It provides a demonstration of arbitrary figurative and / or text advertising messages with the surprising effect of their free floating in space.

 This surprise contributes to the manifestation of the well-known to psychologists effect of subconscious transfer of the perception of advertising messages to the perception of advertised (especially new) goods and services and therefore actively stimulates their purchase and consumption.

 The widespread use of even the simplest devices according to the invention at exhibitions and fairs for displaying trademarks and service marks of exhibiting companies and advertising messages alternating with such signs can significantly facilitate the orientation of visitors in the mass of exhibition stands.

Claims (16)

 1. A stroboscopic projection device having at least one light source carrier, a rotation drive kinematically connected by a shaft with said light source carrier, a plurality of light sources located on the outer surface of said medium, a microprocessor-based light source control unit that is equipped with the position sensor of the specified medium, synchronizer and software for recording texts and / or images to be displayed and processing the recorded data to generate commands for turning on / off the light sources, characterized in that: a) all light sources are made point; b) the carrier of point light sources is cantilevered on the shaft of the rotation drive and is made in the form of a rod that has the shape of a generatrix of a suitable body of revolution, a thickness commensurate with the transverse size of the point light source, and a radially measured width sufficient for such a rod to disappear from the field view of the observer during rotation; c) the optical axis of each point light source is oriented in the direction normal to the generatrix of that body of revolution, which is given by the selected shape of the carrier rod of these light sources. 2. The device according to claim 1, characterized in that: a) the thickness m of the carrier rod of the point light sources is selected from the condition d _tec <m≤9d _tec , where d _tec is the transverse dimension of the light-emitting surface of the point IC; b) the width B of the carrier rod of the point IC is selected from the condition B≤0,1R _max , where R _max is the radius described by that point light source that is as far as possible from the geometric axis of the drive shaft.  3. The device according to claim 1, characterized in that the balancer is cantilevered on the shaft of the rotation drive opposite to the carrier rod of point light sources in the same geometric plane.  4. The device according to p. 3, characterized in that the balancer is also made in the form of a rod, which has the form of a generatrix of a suitable body of revolution and is equipped with point sources of light connected to the control unit.  5. The device according to p. 3, characterized in that the main carrier rod of point light sources and / or the balancer are additionally equipped with point light sources from the inside, facing the geometric axis of rotation of the shaft. 6. The device according to claim 1, characterized in that at least one is located in geometric planes located at an angle φ to the geometric plane of the location of the specified carrier carrier of point light sources selected in the interval 0 ^° <φ <180 ^° an additional carrier rod cantileverly mounted on the shaft and placed on the outside and connected to the control unit of point light sources, having the form of a generatrix of a suitable body of revolution. 7. The device according to p. 6, characterized in that the main and additional rod-carriers of point light sources are made identical in shape and size and are located at angular distances that are multiples of approximately 45 ^o .  8. The device according to claim 6 or 7, characterized in that each carrier rod of point light sources has a cantilever-mounted balancer located opposite to it and located in the same geometric plane.  9. The device according to p. 8, characterized in that each balancer has the shape of a generatrix of a suitable body of revolution and is equipped with external point sources of light connected to the control unit.  10. The device according to p. 1, characterized in that it is equipped with at least one additional shaft of the drive rotation, which is spatially remote from the first shaft and synchronized with it in rotation frequency by suitable means and on which is also cantilever mounted , one having the shape of a generatrix of a suitable body of revolution, a carrier rod of point light sources.  11. The device according to p. 10, characterized in that the main shaft and at least one additional shaft of the rotation drive are connected to a common engine by a synchronizing mechanical transmission. 12. The device according to p. 10 or 11, characterized in that each pair of adjacent parallel mounted shafts is phase-synchronized, and the distance A between them satisfies the condition A <maxR _i + maxR _{i + 1} , where maxR _i + maxR _{i + 1} - the sum of the radii of the circles described by those point light sources that are as far as possible from the geometric axes of the respective shafts.  13. The device according to p. 12, characterized in that it is equipped with more than two parallel mounted shafts, each of which has the same in shape and identically oriented in the initial angular position direct rods-carriers of point light sources.  14. The device according to p. 13, characterized in that on each but the first and last shaft, along with the main rod-carrier of point light sources, an additional direct rod-carrier of point light sources of a larger radius is installed, and only the first and last shafts are installed short carrier rods of point light sources that coincide with the main carrier rods in shape, linear dimensions and angular position.  15. The device according to p. 10, characterized in that it is equipped with two coaxial shafts installed with an axial gap, with each of which at least one carrier rod of point light sources, having the shape of a suitable rotating body, is cantilevered, and these carrier rods are installed in the specified interval between the shafts.  16. The device according to p. 15, characterized in that the coaxial shafts of the rotation drive are connected to a common engine by a synchronizing mechanical transmission and this transmission is equipped with a regulator of the axial gap between the shafts.

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