CZ20022624A3 - Signal element with lighting means, light signal device, and light signal system - Google Patents

Description

Signaling element with lighting means, light signaling device and light signaling system

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a signaling element with luminous means, in particular to a light signaling element in which luminescent diodes are used as illuminating means, a light signaling device comprising the lightning signaling element and a light signaling system comprising the light signaling device.

BACKGROUND OF THE INVENTION

In many areas, signal systems are used that display through a light signal, such as information, warnings or the like. A typical example of such a signaling system is a warning light device. The field of application of such signaling systems is often related to ensuring safety (traffic regulation, etc.). Therefore, regulations for the operation and performance of these systems have been issued that must be taken into account in the design of such systems, for example regarding minimum light intensity, failure protection and signal unambiguity.

Different possibilities are possible as light sources. For example, luminescent diodes, also referred to as LEDs, may be used. These LEDs have the advantage that they have a very long lifetime compared to incandescent lamps and

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... · ....... ·· · low overall height, so that the size of the whole system is not substantially limited by the size of the light fixture chosen.

To date, various systems have been developed, two of which will be further described with reference to Figures 6 and 7.

FIG. 6 shows a system in which a plurality of light emitting diodes 20 are distributed uniformly over approximately the entire illuminating surface of the signaling device on the support plate 21. Each light diode 20 is each equipped with a single lens, e.g. The system is further provided with a device, for example as a diffuser or a screen, or a lens arrangement serving as a primary optic 22. The primary optic 22 forms an outer screen.

By means of secondary optics, as much of the light emitted by the luminous means as possible is converted into useful light. The primary optics serve to suitably distribute the light emitted by the luminous means and guided through the secondary optics, for example to achieve the desired value according to DIN 67527 or EN 12368. For example, transparent or monochromatic diffusers can also be used.

Furthermore, it is possible to adapt the signaling systems to the problems of phantom or apparent light coming from external light sources (especially sunlight). For this purpose it is also possible to use lamellar or honeycomb inserts. These lamellar or honeycomb inserts are usually inserted between the primary and secondary optics.

FIG. 7 illustrates another known signaling system in which several high intensity light emitting diodes 20 are used, which are " ftft "

Are associated with each other into a unit 24 on the support plate, the size of the unit 24 being small compared to the illuminating surface. The light emitting diode unit 24 is provided with a secondary lens 25 which is a single lens. To achieve the above effect, a lens can also be used, or, for better adaptation of the lens to the whole concept, for example a Fresnel lens. Furthermore, a primary optic 22 is provided.

There are various solutions for controlling the lighting means by the known control devices. In most cases, the controls are governed by certain regulations regarding the protection against signal loss or clarity. For example, it may be required that a failure compatible with a metal-filament bulb occurs (for example, with DIN VDE 0832 light signaling devices). That is, when the light intensity due to the failure of one or more LEDs falls below a certain predetermined value or when uniform brightness is no longer guaranteed, the entire LED signaling system is switched off (high-ohm). This, like breaking the bulb filament, ensures that no appreciable current for the control device will flow through the signaling system.

To achieve a high ohmic state, for example, active monitoring is used to ensure a high ohmic shutdown in case of faults. To this end, the function of the light emitting diodes is examined by a microcontroller or other comparator electronics (for example by measuring the current passing through the light emitting diodes or by means of optical sensors). In the event of a fault, the safety element (for example, a semiconductor switch or relay) is switched off or switched off in a high ohmic manner. However, this implies the use of additional electronics in the signaling system, which, however, entails increased costs and an additional source of faults.

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Another option is to passively switch off the signaling system. In this case, the switching device of the LEDs and upstream electronics is designed so that if a certain number of LEDs fails to exceed a certain tolerance, no current can flow.

This is achieved, for example, in that all LEDs are connected in series with a power source. No current is flowing through the signaling system after the failure of one of the LEDs.

On the other hand, if the usability of the signaling system is to be higher and the failure of multiple light-emitting diodes can be tolerated, it is possible to use parallel connection of light-emitting diodes in multiple branches. The branches of this parallel connection of the LEDs are controlled in two different ways. One possibility is that each branch has its own control / power source. If one branch fails, the brightness of the signaling system decreases. Another advantage is that all branches of the parallel connection of the light-emitting diodes have a common control, for example a constant current source, so that the other branches will receive current from the fallen branch. This results in an approximately constant amount of light emitted due to the nominal characteristic of the LEDs. The light distribution and / or uniformity of the luminous brightness are also dependent on the optical system used,

Even for systems using the above-mentioned type of connection, it must be ensured that the entire system is switched off (active or passive) after a failure of a certain number of LEDs, even though LEDs are still available. This is guaranteed either by the above-mentioned step controller or by the appropriate sizing of the components used. For example, when the LEDs are divided into three branches with one common current source and the total current is set to 1.5 times the maximum permissible current value of one LED, it sets nastav ···

At the beginning, approximately half the permissible current of each LED, so that after the failure of one string, the remaining two strands always flow 0.75 times the allowable current, and with the failure of another LED, the current of the last LED exceeds its maximum allowable value. This results in the (last) LED being theoretically destroyed, thereby rendering the signal system high-ohmic. In practice, light emitting diodes work for some time with currents higher than the specified maximum value.

Also known are systems which, in order to increase usability, work with a diode matrix in which a plurality of parallel LEDs are connected in series. The current flow is interrupted only when one of the parallel connections is completely dropped / switched off. Until then, the failure of the light-emitting diodes in the other parallel connections is also possible, without impairing the functionality prematurely. In this case, however, it is assumed that the light-emitting diodes are selected according to the voltage in the direction of the current flow, in order to ensure a uniform current distribution within the parallel connection at the beginning. In addition, it is necessary to take into account the negative influence on the optical output power in terms of brightness distribution.

When several series of light emitting diodes are to be connected in parallel in one signaling system, the light emitting diodes of one series wiring on the screen are spaced as far apart as possible so that failure of one light emitting diode or light emitting diode chain does not lead to improper representation of one symbol. However, such a system always causes a change in brightness that can be perceived when one string of LEDs fails.

The known signaling systems described above with reference to FIGS. 6 and 7 may give rise to various problems.

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In the system of FIG. 6, a large number of individual components are used, each having its own secondary optics. In these systems, failure of one LED always results in a noticeable change in brightness.

In the system of FIG. 7, on the other hand, all the lighting means (LEDs) are arranged behind the lens. In this case, however, approximately parallel light guidance within the optical system is possible only to a limited extent. As a result, the light distribution is burdened with greater scattering losses and constraints in uniformity of brightness, especially when viewed from the lateral direction. Reducing the phantom effect is substantially more difficult.

Furthermore, by arranging many light emitting diodes in a small space, local temperature increases can occur in the region of the light emitting diodes, which has a negative effect on the life of the light emitting diodes.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an improved light signaling element, an improved light signaling device and a light signaling system provided with at least one light signaling device.

SUMMARY OF THE INVENTION

The signal element with the luminous means, with the base carrier and with two or more electric luminous means arranged on the base carrier in one plane, the luminous means arranged on the base carrier so that the surface occupied by them has a maximum lateral the length, and the signaling element with the illumination means is arranged at a predetermined distance after the optical element, the maximum lateral length being less than this predetermined distance.

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The object of the present invention is to provide a light signaling device with a light-emitting signal element according to the invention and an optical element, the optical element being spaced from the light-emitting signal element at a distance greater than the maximum lateral length of the light means.

Furthermore, the light signaling system with one or more light signaling devices according to the invention fulfills this object, and in the case where two or more light signaling devices are used, the respective light signaling devices are arranged in the light signaling system in such a way that the beam from the respective illuminating means to the respective optical elements is the same and the optical elements are arranged in one plane,

Advantageous embodiments of the invention are set forth in the respective dependent claims.

By means of the above-described signaling element with the illumination means, by means of the above-described light signaling device and by means of the above-described light signaling system, it is possible to increase the redundancy of the light signals and therefore achieve a higher usability or life. The optical image of the light signal does not change substantially with respect to its optical and electrical properties until the end of its useful life, since the failure of one of the luminous means is not perceived by the observer, since neither the light intensity nor the light distribution or brightness will change significantly. This effect is all the better, the more point the light source is, or the less diverging the individual light sources. Therefore, operation is possible until the last illumination means of the parallel connection is lost, whereas in previous systems, shutdown must be performed earlier due to diminishing brightness or the risk of symbol change.

Even in the case of several parallel wiring of lighting means arranged in series, the system only fails when all of the lighting means fall off (or are interrupted) in one of the parallel wiring.

LEDs are used, for example, as illuminants. These light-emitting diodes can be connected in series with a suitable power source, so that in the event of the failure of one light-emitting diode, the remaining light-emitting diodes assume the energy fraction of the failed light-emitting diode. Due to the typical current / rated brightness ratio of the light emitting diode, the failure of the one light emitting diode in the emitted light intensity can be compensated. Furthermore, in the event of a failure, a passive shutdown is possible which meets the monitoring requirements by means of the signaling control device. This kind of wiring saves the active trip electronics configuration associated with increased costs and sources of failure, without the disadvantages of providing tripping.

If the current source is dimensioned so that the current is controlled proportionally to the input voltage, the brightness of the light signal can be adjusted by varying the voltage level without entailing a loss of safety if the monitoring via the control device is set to current as the limit value minimum light intensity.

By means of a secondary optic, for example a connecting lens, which is arranged at a predetermined distance in front of the illuminating means, it is possible to produce an almost parallel luminous flux. Thus, the desired light distribution can be achieved with good efficiency. In addition, it is possible to use phantom light reducing measures, for example by means of lamellar or honeycomb inserts.

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By setting the distance of the secondary optics from the luminous means to ten times or more of the maximum lateral surface occupied by the luminous means, the light-emitting diodes appear to be almost a point light source. Each light emitting diode therefore leaves almost the same image in the observer plane.

The light signaling system may preferably additionally comprise a primary optic (diffuser) which very specifically emits light in the desired distribution in order to increase the efficiency or reduce the phantom effect of the sunlight.

If the number of required lighting means requires the arrangement of a plurality of light signaling devices (light means and associated secondary optics), then the light signaling devices are preferably evenly distributed over the illuminating surface in order to obtain a homogeneous brightness. The lighting elements of the individual light signaling devices are connected in parallel and in series so that individual light-emitting diodes can fall out without necessarily causing the entire light signaling system to be switched off.

The modular design of the light signaling system makes it possible to easily replace modules, for example signaling elements with luminous means (basic carriers with luminous LEDs). This is advantageous, for example, because the light signaling system can be used universally. For example, it is possible to vary the combination of the signaling elements with the illumination means in one light signaling system to display other symbols. Alternatively, defective modules can also be replaced, which simplifies maintenance and reduces costs,

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a signaling device; FIG. 2 shows a signaling system using a plurality of signaling devices according to FIG. 1; FIG. 3 is a plan view of the signaling system of FIG. 2; 4 shows a preferred wiring diagram of the signaling device of FIG. 1, FIG. 5 shows a preferred wiring diagram of the signaling system of FIG. 2, FIG. 6 a prior art signaling system, and FIG. 7 a prior art signaling system.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows an exemplary embodiment of a light signaling device 7 with lighting means. On the base plate 2, light emitting diodes 3 are used in one plane as light means. In the illustrated embodiment, the three light-emitting diodes 3 are located in a narrow spatial arrangement, for example at the apexes of an equilateral triangle. The number of LEDs 3 may vary. It is furthermore possible to arrange the light-emitting diodes 3 in a different shape, for example on concentric circles around one center or in one row. The shape of the arrangement of the light emitting diodes 3 is preferably selected so as to achieve the smallest diameter of the base area of the arrangement.

The base plate 2 further comprises, for example, printed lines (not shown) which serve as a connection of the light emitting diodes 3 to each other and to the outside, as well as other electrical elements, for example resistors.

Opposed to the illuminating surface of the light emitting diodes 3 is an optical element 4 (for example, a lens), which will also be referred to hereinafter as a secondary optic. This secondary optics is arranged at a certain distance A from the light emitting diodes 3, which will be described in more detail later.

If the diodes 3 are energized, light of a certain wavelength will be emitted. This light is guided to the optical element 4 forming the secondary optics, where it is transformed into an almost parallel luminous flux. By arranging and dimensioning the light-emitting diodes 3, it is possible to convert as much of the light emitted as possible into useful light. This is achieved, for example, by the fact that the light-emitting diodes 3 are located in the focus of the lens, that is to say a platí f, where f is the focal length of the lens, so that light after refraction caused by the lens occurs in a beam of parallel rays.

The arrangement of the light-emitting diodes 3 on the base plate 2 is dimensioned so that the maximum length d (measured from the centers of the light-emitting diodes 3) of the area covered by the light-emitting diodes 3 is less than the optical distance. Assuming the arrangement of LEDs

3. represents an almost point light source behind the common lens, the relation a >> d must be applied. This ensures that each LED 3 leaves almost the same image in the plane of the observer.

Ideally, by virtue of the secondary optics, i.e. the optical element 4, almost parallel beams are produced after passing through the lens forming the optical element 4. In practical terms, the aim is to achieve the lowest divergence of the beam after passing through the secondary optics. Angle ct. it has a value of about 10 °. As a result, the failure of one light-emitting diode 3 has no significant effect on the distribution of light behind the secondary optics. Assuming that a near-parallel beam is formed and the relation a >> d holds, the ratio of the maximum length d to the optical distance a can be approximately 4 · 4 4 4 4 4 4 4 4 4

D / a = tan a. This achieves that d / a <0.1, which must be taken into account for dimensioning the size conditions in the light signaling device 7.

The observer will not notice the failure of one LED 2 unless it is ensured that the remaining LEDs 3 do not compensate for the loss of light. This is achieved, for example, by the parallel connection of the light-emitting diodes 3 as shown in FIG. 4. FIG. 4 shows a light signaling device 1 with a plurality of light-emitting diodes 2 connected in parallel. current, which supplies the light emitting diodes 2 with current I to supply them with energy. The current source 10 may be sized such that the current δ is regulated directly in proportion to the input voltage. The brightness can then be adjusted by varying the voltage level without entailing a loss of safety. The appropriate control device must only respond to a drop in the primary current associated with the minimum light intensity.

In this type of connection, the failure of a single light emitting diode in terms of light output is substantially compensable by the remaining light emitting diodes 3 (increase in redundancy). In addition, a suitable shutdown condition can be defined in the foreground by a suitable dimensioning. The optical image of the light signal does not change substantially in terms of its optical and electrical properties until the end of its service life (i.e. until the last light emitting diode 3 is stopped), since neither the light intensity nor the light distribution or brightness changes substantially.

The number of LEDs 3 connected in parallel is chosen in practice as a compromise between the usability and the cost of the device. In order to allow operation up to the last LED 3, the total wiring current must not substantially exceed the permissible current of one LED 3.

That is, the more light-emitting diodes I operate in parallel, the more

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0 «0 ·· * more light emitting diodes 3. luminous flux will be required. On the other hand, when the light-emitting diodes 1 are operated, the redundancy of the arrangement is reduced. In addition, the length d of the light emitting diodes 3 is another consideration when selecting the number of light emitting diodes 3 connected in parallel. A longer length d results in a greater distance from the secondary optics. It is necessary to take into account the predetermined values of the size of the device.

Therefore, if too many light-emitting diodes 3 are to be placed on the base plate 2, a plurality of light signaling devices 7 are arranged next to each other, so that the full coverage of the screen is again guaranteed by a very uniform brightness.

Referring now to FIG. 2, a light signal system 5 will be described in which a plurality of light signal devices 5 are used in accordance with FIG. 1.

FIG. 2 shows a light signaling device 7 with a base plate 2, light emitting diodes 3 and a secondary optic 4. Further, the whole light signaling system 5 is shown. Individual components of the light signal system 5 are mounted in the body 6 or on it. The body 6 consists, for example, of plastic and is produced by injection molding and, in suitable places, is provided with support and fastening elements (not shown) for mounting the individual components. The light signaling system může may have an overall base carrier (multiple light emitting diodes 3 on one common board) or alternatively a modular structure. In a modular design, the support and fastening elements are sized to allow easy replacement of certain components. This makes it possible, for example, for the elements of the lighting means (i.e., the light-emitting diodes 1 and the base carrier 2) to be arranged differently in a simple manner in order to achieve a different representation of the symbols. The geometric shape must also be taken into account

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Preferably, there is an effort to arrange or align the base carriers 2 side by side so that there are no gaps between them. This can be achieved, for example, by a hexagonal basic shape. A damaged light element can thus also be easily replaced. In this case, a plug-in system is preferably used for fastening the components in the body 6, but other types of fastening (clamping, soldering, etc.) are also possible.

FIG. 2 further shows an additional optical device, hereinafter referred to as primary optic 2. This primary optic 7 may be located on the front side of the body 6. For example, various diffuser screens or lens systems may be used as primary optics 7, to adapt the light distribution to predetermined values. The primary optic 7 can furthermore be provided with transparent or monochromatic diffuser screens.

FIG. 2 further illustrates (optional) an additional optical device 8 comprising, for example, lamellae or honeycomb inserts. This suppresses environmental influences on the light signaling system 5, such as the phantom light induced by solar radiation. This phantom light can be further attenuated by the aforementioned primary optics 7.

The light signaling devices 7 are arranged side by side, the respective secondary optics 4 forming one plane. In the light signaling system 5 shown, the base support plates 2, and consequently the light emitting diodes 3, are also arranged in one plane. According to a first preferred embodiment, the secondary optics 4 and the base plate 2 are each formed as a whole unit (one secondary optical unit and one whole base plate). However, other forms of arrangement are possible as long as it is guaranteed that the light emanating from the secondary optics 4 is essentially "t".

9 * · · »··· * uniform and the light source is point (a >> d). The respective arrangements of the light emitting diodes 3 and the secondary optics 4 are further evenly distributed over the illuminating surface of the light signaling system 5 in order to achieve the most homogeneous brightness.

FIG. 5 shows the arrangement of the connection of the light signaling system 1. The light-emitting diodes 3 of the respective light signaling devices X, as described above, are connected in parallel to each other. The respective parallel connections of the LEDs 3 are connected in series with each other. With this series connection, a current source 10 is also connected in series, supplying current I for supplying the LEDs with energy. This connection achieves an even power distribution across all parallel connections. The system can also be monitored by passive shutdown. The light signaling system 1 will only be switched off when one parallel circuit is completely disconnected. Up to this point, the brightness is homogeneous.

Referring now to FIG. 3, an exemplary use of the invention described above is described.

Approximately 60 light-emitting diodes 3, such as the OSRAM Power-TOPLED ®, are required to design a light signal system X, such as a warning light device, to produce the required luminous flux. With the individual light signal devices X of FIG. 1, this would result in 61 light emitting diodes X occupying an area of about 1500 mm ² , corresponding to a maximum lateral length d> 32 mm. However, since d / a <0.1 is to be valid, an optical distance of approximately 430 mm is obtained with such a dimensioning, which is impossible with the existing warning light devices. Therefore, the light signal system 5 according to FIG. 2 is switched.

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FIG. 3 is a plan view of the light signal system 5 of FIG. 2 for use as a light warning device; A typical nominal diameter of the entire lens plate of a light warning device (i.e., a visible semaphore field) is, for example, 210 mm or 300 mm. In other words, the nominal diameter of the primary optic 1 of Figures 2 and 3 is set to 210 mm.

With a practical spacing a of approximately 50 mm and hence a length d of approximately 5 mm, it is possible to arrange 19 individual lenses with three LEDs 3 behind each individual lens. Each individual lens then has a diameter of about 50 mm. The arrangement of the individual lenses of the secondary optics 4 is then carried out as shown in FIG. 3, i.e. with one lens / secondary optics 4 in the center of the circle formed by the primary optics 7 and 6 and 12 respectively concentrically lowered by the other secondary optics 4. 4, correspondingly arranged 3 light emitting diodes 3 are arranged. This produces a total of 57 light emitting diodes 3 which are considered sufficient to achieve the required luminous flux.

As shown in FIG. 3, twelve external lenses, or secondary optics 4, are trimmed by the circular outer path of the primary optics 7. Although only circular secondary lenses 4 are shown in FIG. 3, it is also possible to extend the secondary optic lenses 4 to corner regions such that the entire primary optic disc T is illuminated.

By the smaller number of light emitting diodes 3 behind each optical element 4 (secondary optics) on the base plate 2 and the associated smaller length d, it is possible to select a relatively smaller distance a, which makes the light signal system 5 generally compact. Large-scale distribution of light-emitting diodes 3, as well as their smaller concentration on the LEDs

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9 «·» ·· in one place, further allows improved heat dissipation, thereby increasing the lifetime of the individual LEDs 3.

The invention is not limited to the embodiments described above. Also contemplated is a signaling system in which only one light signaling device 8 is used, which is combined with said additional devices, such as primary optics 7. The additional optical device 8 in the form of lamellar or honeycomb inserts and the like, in one body 6 A plurality of such individual systems may then be assembled again into a multiple system, whereby one or more separate energy sources 10 may be provided.

In addition to the aforementioned light-emitting diodes 1, other light-emitting means, such as incandescent lamps or the like, can also be used. In addition to the constant current source, other energy sources (for example, a combination of a battery and a solar cell) can be used as sources of energy which can guarantee the minimum current required. Although passive control of the lighting means is provided in the above-described embodiments, it is also possible to use active control by means of a microcontroller or the like.

The opposite arrangement of the secondary optics 4 and the basic carrier 2 is not necessary in the light signaling device 7. An arrangement is also possible in which the base carrier 2 forms an angle (e.g. 90 °) with the base surface of the secondary optics 4. The emitted light is then reflected by a suitably arranged mirror or prisms to the secondary optics 4. This in some cases facilitates, for example, the installation of a signaling device with respect to the existing spatial conditions.

Furthermore, the aforementioned ratio d / a can be adapted to the subjective requirements of ft • ft • when dimensioning the light signaling device 1 or light signaling system 5, respectively.

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Ft ft · ft ft ft · ···· recognizable or unrecognizable failure of one LED 3. It is also possible to adapt the ratio d / a to the lenses used in the secondary optics 4.

As described above, a light signaling device 7 is provided in which the distance a of the light emitting diodes 3 from the optical element 4 is selected such that the maximum lateral length d of the area occupied by the light emitting diodes 3 is substantially less than a plurality of light signaling devices 7 may be included in a single light signaling system. Appropriate electrical interconnection achieves a high failure safety.

Claims (16)

PATENT CLAIMS Signaling element having illumination means, with a base carrier (2) and two or more electric illumination means (3), which are arranged on the base carrier (2) in a plane, the illumination means (3) being on this base the carriers (2) are arranged such that the surface they occupy has a maximum lateral length (d), and the signaling element with the lighting means is arranged at a predetermined distance (a) behind the optical element (4), the maximum lateral length (d) being smaller than this predetermined distance (a). Signaling element with lighting means according to claim 1, wherein the lighting means (3) are formed by light-emitting diodes. The luminous signaling element according to claim 1 or 2, wherein two or more electric luminous means (3) are connected in parallel. The luminous signal element according to one of the preceding claims, wherein the electric luminous means (3) are connected to an electric power source (10) which is dimensioned such that the starting current is controlled directly proportional to the input voltage, so that from the lighting means (3), the remaining lighting means (3) could be adjusted to the brightness. Light signaling device (1) with a signaling element with lighting means (2, 3) according to one of claims 1 to 5 and with an optical element (4), the optical element (4) being located from the signaling element with lighting means (2), 3) at a distance (a), said distance (a) being greater than the maximum lateral length (d) of the lighting means (3). • 9 • 9 9 The light signaling device (1) according to claim 5, wherein the optical element (4) has a lens which converts the light rays emitted by the illumination means (3) on one side of the optical element (4) into a substantially parallel luminous flux on the other side. The light signaling device (1) according to claim 5 or 6, wherein the spacing (a) is substantially ten times or more times the lateral length (d). Light signaling system (5) with one light signaling device (1) or several light signaling devices (1) according to one of claims 5 to 7, wherein in the case where two or more light signaling devices (1) are used, the respective light signaling devices (1) are arranged in the light signaling system (5) such that the path of the light beam from the respective lighting means (3) to the respective optical elements (4) is the same and the optical elements (4) are arranged in one plane. The light signaling system (5) according to claim 8, wherein in the case where two or more light signaling devices (1) are used, the respective light signaling devices (1) are arranged evenly such that on the outside of the optical element (4) a homogeneous brightness is achieved. Light signaling system (5) according to one of claims 8 or 9, wherein, in the case where two or more light signaling devices (1) are used, the electric lighting means (3) of the respective light signaling devices (1) are connected in parallel in groups and the parallel groups are connected to each other in series, the power supply (10) being connected in series to the series. * 4 · 4 4 4 4 4 4 4 444 5 «44 4444 44 4444 Light signaling system (5) according to one of Claims 8 to 11 10, wherein the light signaling system (5) comprises a body (6) in which one light signaling device (1) or two or more light signaling devices (1) are arranged. Light signaling system (5) according to one of Claims 8 to 12 11, wherein the light signaling system (5) comprises a first optical accessory (7) to which light rays coming from the outside of the optical element (4) are directed, and capable of emitting light rays coming from the optical element (4) from the light a signaling system (5) in a predetermined layout. The light signaling system (5) according to claims 11 and 12, wherein the first optical attachment (7) is formed by a diffuser screen mounted on the body (6). The light signaling system (5) according to claim 12, wherein the light signaling system (5) comprises a second optical attachment (8) disposed between the optical element (4) and the first optical attachment (7), wherein the second optical attachment (8) ) suppresses surrounding optical disturbances affecting the light signaling system (5). Light signaling system (5) according to one of Claims 8 to 14, wherein the signaling elements with the illumination means (2, 3) are arranged for different representations of the symbols by the light signaling system (5). The light signaling system (5) according to claim 15, wherein the arrangement of the signaling elements with the illumination means (2, 3) is aaa variable to represent different symbols in the light signaling system (5).