FR2924200A1 - LIGHTING DEVICE AND IN PARTICULAR WIND LIGHTING DEVICE - Google Patents

Abstract

The invention relates to a lighting device such as a street lamp, candelabra, lamppost comprising a foot or mast provided with at least one vertical axis wind turbine (1, 1a, lter), means for generating electrical energy from said wind turbine, means for storing said electrical energy and lighting means (4, 4a, 4b, 5a, 5b, 5b, 9b). Said lighting means of said lighting device consist partly of said wind turbine (1, 1bis, lter) mounted at the end of the foot or mast (2) of said lighting device.

Description

Lighting device and in particular wind lighting device

The present invention relates to lighting devices and in particular the devices for aeolian lighting.

For lighting devices, the main source of energy is currently electrical energy from the urban electricity grid. Although these electric power devices are widely used, they have certain limitations and disadvantages, mainly because of their very source of energy. In fact, these lighting devices consume a lot of energy most of the time and the electrical energy used is mainly produced from fossil natural resources that are dwindling, causing economic crises. In addition, the use of these natural energies causes various environmental concerns (pollution, greenhouse effect, natural disasters ...).

To overcome these various problems related to the production and consumption of electric energy from fossil natural energies, we often use energy production from renewable and clean energies. Indeed, lighting devices can be powered through the use, for example, of hydraulic energy, solar and / or wind. Devices using solar energy alone are very widely used.

The majority of power generation devices using wind turbines are equipped with lighting devices but these devices do not have a lighting purpose per se but rather a function of warning and signaling of a danger. In fact, wind turbines are often tall structures and can hinder low air traffic. Especially at night, it is important to report the presence of the obstacle to prevent potential accidents. This is why some wind devices are equipped with lighting devices, preferably at the ends of the blades of the wind turbine so that pilots of aerial vehicles can identify the dimension of the structure and avoid it. Such devices are described in the international patent application WO 2007093570 as well as in the patents JP 11182409, JP 2006174523, W 2002303248, SE 8206718, DE10164524. Such light devices are essential to signal the danger but they have insufficient light, punctual and too local to be qualified as lighting devices, their purpose being other. A lighting device operating with wind energy is described in CN1916395. This lamp has a wind force compression unit, a compressed air storage unit, a power generation unit and a lighting unit. Although this device is powerful, it has the disadvantage of being expensive because the means used to implement it are complex.

German patent DE19618041 describes an external lighting device provided with an aerator. This lighting device consists of a stand supporting the lighting structure, a wind-powered wind turbine and a generator connected to said motor which produces an electric current for the operation of the lighting structure. This device has the lighting structure above the wind turbine. This type of lighting device having a wind turbine and above or below a lamp or the like is described in DE10046042, KR 20020064619. These devices require a lot of equipment and are therefore expensive. They also have a congestion most often important and unsatisfactory aesthetics, especially for their integration into the urban landscape.

In addition, there is a street or street light street working with wind and solar energy under the name Windela. It consists of a sophisticated aerogenerator with two different types of blades, photovoltaic cells and an illuminated washbasin with 42 light-emitting diodes (LEDs) with the advantage of consuming little energy. Although this device has two means of energy production (solar and wind), it is similar to previously described devices having the lighting structure (the basin) placed above or below and separated from the wind device. The aesthetics of this street light is nice but the inconvenience of space and cost is not solved.

The present invention consists of a lighting device overcoming the main disadvantages of the lighting devices with wind energy of the prior art described above.

Indeed, the present invention relates to a lighting device such as a street lamp, candelabrum, lamppost, comprising a foot or mast, provided with a wind turbine or a vertical axis wind turbine, with means for generating energy electrical power from said wind turbine, means for storing said electrical energy and lighting means, characterized in that said lighting means consist in part of said wind turbine mounted at the end of the foot or mast of said lighting device. Advantageously, the wind turbine is thus an integral part of the lighting device and constitutes the aforesaid part of the lighting means. It is rotatably mounted in the extension of said mast of the lighting device according to the invention.

Such a lighting device provided with a wind turbine according to the present invention is advantageous from an energy point of view because on the one hand, the wind constitutes a clean energy and on the other hand, the wind is distributed over the whole globe allowing use of the present invention anywhere on the Earth's surface (or almost). In addition, according to data from the World Energy Resources Council, 27% of the planet's surface is swept by a wind of at least 5m / s (speed measured at 10 m from the ground).

The lighting device also has the advantage of being autonomous, that is to say that it does not require electrical power supplied by the sector, that it does not require connection or wired connection and it can work outdoors regardless of its location. It will preferably be used as an outdoor lighting device, public or private. For example, this lighting device can be included in street furniture or in private gardens. Such a device can also be used in an enclosed space such as a tunnel, the flow of cars and the air that they move is sufficient to rotate the turbine of said lighting device. Similarly, such a lighting device can be used on natural sites without a power supply network, because too far, too wild, without the need to perform work that can change these sites. When said lighting device comprises sealed components, it can also be used as a beacon at sea, another advantage because the signaling at sea is very important and in this place, the wind is constantly present even very weakly.

One of the major advantages of the lighting device according to the present invention lies in the fact that, to activate the wind energy device, the required wind force can be very small. The production of electrical energy from wind energy will be almost constant depending on weather conditions. The storage of this electrical energy produced will be achieved until the complete recharging of the storage device of electrical energy (accumulator) provided for this purpose.

The lighting device according to the present invention is preferably in an elongated form several meters high. This lighting device is provided with a foot or mast in which, preferably, are housed the wind energy transformer in electrical energy and the storage device of the electrical energy (accumulator), these two devices being thus masked in the foot of the lighting device to maintain the aesthetics of said device. In the extension above this foot or mast is the axis of rotation of said wind energy device. This axis is vertical and limits the size and bulk of said lighting device. In addition, this axis of rotation is provided with ball bearings to allow improved operation, more efficient and durable rotation of the device.

The wind energy transformer in electrical energy is directly connected to the wind energy device and can be of different types and preferably of conventional type.

The rotation of the wind energy device will cause, through the transformer, the generation (generation) of electrical energy that will be used immediately by the light sources of the lighting device and / or stored in a storage device. electrical energy (accumulator).

The light sources used for the lighting device according to the present invention may be of different types, for example light-emitting diodes (LEDs), fluorescent tubes, incandescent lamps, halogen bulbs or lamps, neon tubes or tubes. other means for lighting.

In one embodiment of the invention, the wind energy device comprises a vertical axis of rotation which carries blades or blades of curved section set in motion, that is to say in rotation, thanks to the wind. These blades or fins have a rectilinear shape in their longitudinal direction and are placed along the axis of rotation, either vertical. The wind turbine device then consists of the axis of rotation, the blades or fins and the ball bearing.

In this particular embodiment, the blades of the wind turbine, arranged around the rotating vertical axis, carry light sources and diffuse the emitted light. Preferably, these light sources are light-emitting diodes (LEDs) and they are preferably evenly distributed over the entire surface of each of the blades. Consequently, the blades or vanes of said wind turbine (ie part of the wind energy device) are, preferably, a means of diffusing the produced light, which is produced by the use of the electrical energy produced. by the wind turbine then stored.

Preferably in this embodiment, the wind turbine is constituted by three blades or movable fins distributed equidistantly about the axis of rotation. These blades are preferably translucent polycarbonate or diffusing light points to make the entire lighting device aesthetically pleasing but also allow it to diffuse light through the material used and this especially when the wind energy device rotates. It is possible to use another resistant material with the same properties of transparency or translucency and light scattering potential. The type of light source and its distribution on the blades, the number of blades and their distribution around the axis of rotation as well as the material used are only given by way of example and the present invention can not be limited to this example.

In a variant of use, this lighting device is off when the blades or blades rotate. On the other hand, when they are at a standstill, the lighting is turned on and the lighting device then acts as a street lamp, lamppost ... In another variant of use, when the charging device energy storage is below a predetermined fill threshold, the blades of the turbine start to rotate it is day or night to recharge.

In a particular preferred embodiment of the present invention, the light sources are carried by the foot of said lighting device. These light sources can be of different types as described above and are preferably light emitting diodes (LEDs) or fluorescent tubes. The wind turbine is in the form of a frustoconical cylinder flaring towards the upper part of the lighting device, carrying blades or fins at its outer periphery, said cylinder being rotatably mounted around the light sources carried by the foot and used to the diffusion of the light emitted by the light sources. The wind turbine has a vertical axis of rotation which is therefore connected to a light diffusion means itself carrying blades. The blades and said frustoconical cylinder are preferably made of the same material, namely translucent or diffusing polycarbonate at light points. Consequently, the lighting means of the lighting device consist in part of said wind turbine itself constituting a means of diffusing the light produced. This light diffusion means preferably has a circular section, this form not being limiting.

In a variant of this embodiment, the wind turbine comprises a rotary base or rotating ring, preferably circular, supporting said frustoconical cylinder carrying the blades and diffusing the light and carried by the foot of the device.

In yet another variant of this embodiment, the frustoconical cylinder is placed directly on ball bearings adapted to the shape of the lower section of the latter, namely circular preferably, and placed at the upper end of the mast or foot.

In this embodiment of the invention and its variants, the light sources can be carried either by the upper end of the mast then providing a light with a beam directed upwards, or by a hat or dome placed on the upper end of said frustoconical cylinder and then providing a beam of light directed downwards or the ground. This oriented light will then be scattered and reflected by said frustoconical cylinder.

The light sources are placed internally with respect to said frustoconical cylinder, that is to say that these light sources are inscribed in the perimeter of said frustoconical cylinder. The light coming from the light sources will then initially be placed inside the light diffusion means and then it will be reflected and diffused outwards by this frustoconical cylinder preferably made of translucent polycarbonate.

In order to allow a better diffusion of the light and to obtain a lighting device adapted to outdoor lighting, among others, and providing a pleasant lighting, the light diffusion means will be made substantially tube-shaped. The light produced and diffused by the lighting device then forms a light tube or lighting tube.

Preferably this tube is a frustoconical cylinder mounted on the mast or foot is oriented to flare upward allowing a distribution of light more suitable and pleasant for a lighting device.

This frustoconical cylinder carries blades or fins that will rotate the latter through the force of the wind. Thus, this frustoconical cylinder, means of light scattering and thus lighting means, is a part of the wind turbine. The electrical energy produced by this rotating wind turbine will then be used by the light sources that will operate, illuminate and light exiting will be diffused through said frustoconical cylinder. The lighting device will then be a kind of rotating light tube. Preferably, when the device illuminates, the turbine is stopped but, it can be expected that the turbine rotates while the device illuminates and particularly when the recharging of the battery of the lighting device is not complete and below a recharge threshold.

The blades or fins carried by said frustoconical cylinder of the wind turbine preferably have a more or less concave curved section, this shape giving the wind energy device a better efficiency, a better yield and a better resistance to wind than section blades. rectilinear in the direction of their width. The number of these blades is not fixed and will depend on the size of the lighting device, its location as well as its exposure to the wind. The size of the blades (width and length section) of said wind turbine may be variable and will also be a function of the number of blades carried by said wind turbine. The blades may extend over the entire height of the cylinder or only a part, preferably at least the upper third of it. In addition, whatever the shape of the section of these blades or fins, their number and size, they can be arranged along the frustoconical cylinder in various configurations.

Indeed, in a first configuration, they may be rectilinear in the length direction and placed vertically along said frustoconical cylinder, substantially parallel to the axis of rotation of said wind turbine. Preferably, these blades or fins are three in number. However this number is not limiting.

In a second configuration, the blades or fins may be arranged helically around said frustoconical cylinder and in its length. In this case, they are preferably inclined, non-rectilinear and 3 to 5. This configuration gives very advantageous energy efficiencies with a reduced cost because this configuration makes it possible in particular to reduce the width of the blades (short blades) and therefore to have a wind energy device lighter and less expensive equipment.

This embodiment containing a frustoconical cylinder carrying the blades or vanes of the wind turbine is particularly suitable for a lighting device because it allows to have a stable light source carried by the foot or mast of the device and a light scattering homogeneous and constant. Indeed, the diffusion of light is even more pleasant and satisfactory with this so-called frustoconical cylinder, a means of light scattering which constitutes a kind of inverted shade. In addition, such a device requires a very low wind force to operate, which avoids size constraints, especially in height, to pick up or catch wind. Therefore, a saving of material will also be achieved and the overall cost of the device according to the invention will be reduced compared to devices of the prior art.

The illumination means of the lighting device consist of the power supply, the connectors, the light sources as well as, according to the chosen embodiment of the lighting device, blades or frustoconical cylinder carrying blades. In these two main embodiments, on the one hand, the blades of the wind turbine carry the light sources and, on the other hand, the wind turbine is in the form of a frustoconical cylinder carrying blades and diffusing the light from the light sources. The orientation of the emitted light is different and the lighting result is different.

Indeed, in the first embodiment of the lighting device of the present invention, the lighting is performed by a multitude of light beams produced by the LEDs preferably. These light beams can be diffused by the blades made of a suitable material but also by the rotation of the wind turbine. In the second embodiment, the illumination is achieved by a single beam obtained by the scattering of the ascending or descending beams produced by the light sources carried respectively by the foot or the upper end of the lighting device, the diffusion being obtained also thanks to the material of realization of said frustoconical cylinder carrying the blades.

In addition, in the first embodiment, the light sources are potentially mobile because carried by the blades and in the second embodiment, the light sources are necessarily static when they are carried by the foot of the lighting device.

The blades of the wind turbine may, however, remain stationary if the wind force does not allow the rotation of the wind energy device or if, on the contrary, the wind force is too strong because, in the latter case, braking means or shutdown of the wind turbine is integrated with said lighting device. It will be described in more detail below. Nevertheless, when these blades or blades are immobile for one of the reasons explained above, the lighting device can still operate and diffuse light because the energy produced by means of the wind turbine and stored in the device energy storage can be solicited for lighting. Such a lighting device according to the present invention with a battery has an operating autonomy of at least 24 hours so that if the wind turbine is not rotating, the lighting device can illuminate.

The lighting device advantageously has means for limiting the speed of the wind turbine and / or stop / disengage means depending on the climatic conditions. Indeed, as mentioned several times, such a lighting device has the advantage of being very sensitive and having the ability to rotate with a very low wind force, this to obtain lighting despite a location very little exposed to the winds. On the other hand, as soon as the wind forces up, the wind turbine can pack and can therefore be damaged. As soon as the wind reaches a predefined speed, braking and / or stopping means of the wind turbine can be activated. These braking and / or stopping means actuate the partial or total retraction respectively of the blades or fins. Indeed, the blades or fins of this lighting device are designed to be potentially retractable. They can retract or retreat towards the central axis of said lighting device.

In the first embodiment where the light sources are carried by the blades themselves, when the wind is too strong, each blade or wing can tilt or pivot to the next blade, the lighting device then passing from a state deployed to a folded state or rest and thus making all the blades less or not exposed to the wind.

In the second embodiment, in which the wind turbine is in the form of a frustoconical cylinder carrying blades or fins, when the wind is too strong, the latter may partially or totally fall into said frustoconical cylinder which contains notches or slots allowing the passage of these so-called blades. The blades during their retraction move towards the axis of rotation of the wind turbine. The partial retraction of the blades can be done over the entire length of the blade thus decreasing the width of the blade but it can also be done by a retraction of the upper or lower part of the blade corresponding to rather a pivoting movement of this blade. part of the blade towards the main axis of the lighting device. The winding surface being thus reduced, the rotational speed of said wind turbine will be reduced, thus limiting the risk of damage to said lighting device.

For example, when the wind force reaches at least 120 km / h, the stop / disengage means is activated and allows the retraction of the blades of said device. The stopping means may be configured to activate beyond a predefined wind speed set by the designer or user.

In these two embodiments, said wind turbine can then be shut down does not prevent so far its lighting capacity obtained through the storage of electrical energy.

In an alternative embodiment, it can be provided that the axis of rotation of the turbine or the rotary base / rotary ring is connected to a gear system itself connected to the accumulator and provided in the foot or mast of the lighting device. This gear system can be used for braking or stopping the turbine.

The braking or stopping of the wind turbine of the lighting device can thus be carried out by pinion (s), by centrifugal force, by reduction of the surface exposed to wind or other suitable systems.

It can be envisaged that when the blades turn, the lighting device is off and when they are stopped due to the lack of wind or the actuation of the stop means, the device illuminates. In addition, it can be provided that the lighting device according to the invention is off by day, a period when the wind turbine produces electrical energy by the rotation of the blades and switched on at night, during which time it consumes the energy produced and stored. This makes it possible not to consume unnecessarily the energy produced. In addition, depending on the lighting requirements as a function of the brightness that can be advantageously detected by a sensor mounted on said lighting device, the lighting device will be turned off when it is light enough and turned on when it is dark. .

Furthermore, advantageously and in order to overcome the malfunctions of the wind energy device or the possible lack of wind, the lighting device according to the present invention is also equipped with a solar energy device. This solar energy device is preferably placed on the top of said lighting device. It consists of at least one photovoltaic cell, preferably several. It may for example be placed on the top of the cap or dome covering the upper end of the frustoconical cylinder.

The invention will now be described in more detail with reference to the figures in which: FIG. 1 shows a first embodiment of the present invention in which the blades of the wind energy device carry light sources (expanded state).

Figure 2 shows a section along the line A-A 'of Figure 1 in which the blades of the wind energy device are deployed.

Figure 2a shows a section of the wind turbine of Figure 1 when the blades thereof are folded (folded state or rest).

Fig. 3 shows a second embodiment of the present invention in which the light sources of said lighting device are fixed.

FIG. 4 shows an alternative embodiment of the lighting device as shown in FIG. 3. FIG. 5 represents a section of said lighting device illustrated in FIG. 3 or 4 along line A-A'.30. FIG. 6 shows this second embodiment illustrated in Figure 3 in which the blades of the wind turbine are partially retracted.

Figure 7 shows this same second embodiment illustrated in Figure 4 in which the blades of the wind turbine are fully retracted.

Figure 8 shows an alternative embodiment of said lighting device according to the invention, the light diffusion means being fixed to a ball bearing directly. FIG. 9 represents an alternative embodiment of the invention shown in FIG. 8.

Figure 1 illustrates a lighting device provided with a wind turbine 1 for generating electrical energy. The wind energy captured by said wind turbine 1 will be transformed by a wind energy transformer into electrical energy which will be stored in a storage device of energy or accumulator. These two devices, transformer and accumulator, are housed in the foot 2 of said lighting device. Said wind turbine 1 is provided with a vertical axis of rotation 3 on which are fixed blades or fins 4. These blades or fins 4 are preferably translucent polycarbonate. In this figure 1, they are three in number but this is not limiting. They carry light sources 5 which are preferably light-emitting diodes (LEDs). In order to allow a good rotation of the blades or fins 4 and a better life of the wind turbine 1, the vertical axis of rotation 3 is equipped with ball bearings 6. The supply provided by the accumulator and / or the rotation of the blades 4 of said wind turbine 1, in its deployed state, will allow illumination through the light sources 5 carried by said blades 4. In this embodiment of said lighting device, the lighting means are constituted by the blades 4 of the wind turbine 1 carrying the light sources 5. 10 In addition, the lighting device is surmounted by a solar energy device 7 which will supply the battery and / or allow the operation of said device lighting when the wind turbine 1 does not work due to lack of wind or wind too powerful. Figure 2 illustrates the device depicted in Figure 1 seen in section along the line A-A '. The blades 4 are spaced equidistantly from each other. They are carried by the axis of rotation 3.

FIG. 2bis illustrates a section at the same height as FIG. 2 but when the lighting device is in its folded or rest form. The blades or fins 4 are thus pivoted towards the axis of rotation 3. More precisely it is the outer edge 8 of each blade which will be brought to the next blade and in the direction of the axis of rotation 3 of the wind turbine. The blades 4 are thus no longer exposed to the wind and the wind turbine 15 1 is thus stopped, disengaged. This folded position is activated by means of stopping the wind turbine 1 when the outside winds are too powerful and may damage it.

Figure 3 illustrates a lighting device with an Ibis wind turbine for generating electrical energy. This lighting device is provided with a foot 2bis in which are housed a transformer and an accumulator. The developed wind energy will be transformed, stored and then used for lighting said lighting device. This lighting is done by means of light sources 5a placed at the upper end of the foot or mast 2a of said lighting device and whose light beam is oriented 25 upwards. These light sources 5a are therefore fixed. The wind turbine Ibis consists of a vertical axis of rotation 3bis equipped with ball bearings and to which is connected a frustoconical cylinder 9, a means of scattering the light produced by the light sources 5a. This frustoconical cylinder 9 carries blades 4a and constitutes a part of the wind turbine Ibis. Said frustoconical cylinder 9 is here in the form of a tube 30 slightly flared upwards. The light sources 5a are inscribed in the perimeter of the base of said frustoconical cylinder 9. Thus, the light produced by these light sources 5a will initially be contained in said frustoconical cylinder 9 and then diffused through the material of said frustoconical cylinder 9, namely preferably translucent polycarbonate. Light sources 5a providing light are preferably LEDs (as shown in the figure) or fluorescent tubes extending upwardly from the cylinder. The blades or fins 4a carried by said frustoconical cylinder 9 are three in this illustration, are of curved section and are arranged rectilinearly along said frustoconical cylinder 9. Such a device can be surmounted by a solar energy device 7.

Figure 4 illustrates a lighting device with a lter wind turbine for generating electrical energy. This device is provided with a foot or mast 2ter housing a transformer and a battery. The electrical energy produced is used by light sources 5ter fixed to said foot 2ter and therefore fixed. In the extension of the foot 2ter is the vertical axis of rotation 3ter of the wind turbine 1 ter. This axis of rotation 3ter is connected to a rotating base 10 supporting the frustoconical cylinder 9 which itself carries the blades 4ter of said wind turbine 1 ter. The light sources 5b used are preferably LEDs (as shown in the figure) or fluorescent tubes extending towards the upper part of the cylinder and the material of the frustoconical cylinder 9 is preferably translucent polycarbonate. The frustoconical cylinder 9 is flared upwards. The lighting device operates according to the same principle as for the devices previously described in FIGS. 1 and 3.

The light produced by the light sources 5ter is projected into the frustoconical cylinder 9, a diffusion means which in turn reflects the light and diffuses it outwards. The blades or fins 4ter carried by the frustoconical cylinder 9 are curved in section and are helically arranged around the frustoconical cylinder 9. They are preferably of shorter section than the blades arranged vertically on the lighting device of FIG. Thanks to the 4ter blades carried by the frustoconical cylinder 9, this light scattering means 9 is rotatable. Such a device can also be surmounted by a solar energy device 7.

FIG. 5 illustrates the illumination device seen in section along the line AA 'represented in FIG. 4. The light sources 5ter are observed carried by the foot or mast 2ter of the lighting device, the frustoconical cylinder 9 forming a circle around 5ter light sources. These light sources 5ter represented by points in the figure are for example light emitting diodes (LEDs), fluorescent tubes or any other suitable type. Four blades 4ter are also observed, four in number and with a curved section. They are arranged equidistantly around said frustoconical cylinder 9 diffusing the light. In the center, we notice the axis of rotation 3ter of the wind turbine. Thus it is understood that the light produced by the light sources 5ter themselves will be projected inside the frustoconical cylinder 9 which will reflect or diffuse through the material in which it is constructed.

Figure 6 illustrates the lighting device depicted in Figure 3 when in its partially folded position. Such a position is put in place when there is too much wind and the latter may damage the wind turbine 1a or link and therefore the lighting device. 4a blades are partially retracted into the frustoconical cylinder 9, the retracted portion is shown hatched in Figure 6. Indeed, the bottom of these blades is tilted to the axis of rotation 3bis of said wind turbine Ibis. Slots 11 are provided in the frustoconical cylinder 9 and allow the partial or total retraction (not shown here) of said blades 4a. Thus, these blades 4a will be less exposed to the wind and will allow the braking or stopping of said wind turbine Ibis.

Figure 7 illustrates the lighting device described in Figure 4 when it is in its fully retracted position. This position is activated when the wind is too strong and it is better to completely stop the rotation of the wind turbine bind. The frustoconical cylinder 9 is provided with slots 12 adapted to the folnie blades 4ter that is to say here curved and helical slots around said frustoconical cylinder 9 diffusing light. The blades 4ter are completely retracted towards the axis of rotation 3ter of said wind turbine lter. In Figure 7, they are seen through the transparent frustoconical cylinder 9 and shown hatched. Such a position will prevent the wind turbine from rotating, thus preserving any deterioration due to the strong wind, but will not prevent the lighting from functioning, thanks to the energy storage device and / or or the solar energy device 7 provided on the top of said lighting device.

FIG. 8 illustrates the upper part of the lighting device provided with a frustoconical cylinder or rotor 9 carrying blades 4a vertical with curved section, a length equivalent to about one third of said frustoconical cylinder 9 and arranged in the upper part of that -this. Said frustoconical cylinder 9 is crimped and held in its lower part to a ball bearing 6. Said ball bearing 6 has a shape adapted to the lower part of said frustoconical cylinder 9 and is preferably circular. It comes to be placed on the upper part of the mast or foot 2 of the lighting device. Thus, there is continuity between the foot and the light diffusing means 9. In addition, the wind turbine Ibis according to this embodiment has no central axis and internal to the frustoconical cylinder 9. A retracting means 11 4a blades is provided in the light scattering means 9.

In addition, the lighting device is provided at its upper end with a cap or dome 13 carrying the light sources 5. In Figure 8, the light sources shown are light emitting diodes (LEDs). The cap 13 is placed on the end of the wind turbine Ibis and covers it. The light sources 5 thus emit a downward light beam which is then diffused by the cylinder 9 as well as the blades 4a as a function of their production material. The hat or dome 13 may be covered with photovoltaic cells 7.

FIG. 9 illustrates an alternative embodiment of the invention shown in FIG. 8.

Thus, the light sources 5 are placed on a fixed plate 14 connected to the upper end of the mast 2. In FIG. 9, only one light source is shown which is a fluorescent tube carried by the fixed plate. 14 and placed in a central position inside the frustoconical cylinder 9. The light source 5 is then fixed. In the same way as for FIG. 8, the light scattering means 9 is connected to the upper end of the mast 2 and is rotatable through its connection to a ball bearing 6 adapted to the shape of its section. low, namely circular.

The present invention is of course not limited to the exemplary embodiments illustrated above.

Claims (10)

1- Lighting device such as a street lamp, candelabrum, lamppost comprising a foot or mast provided with at least one vertical axis wind turbine (1, Ibis, lter), means for generating electrical energy from said turbine wind turbine, means for storing said electrical energy and lighting means (4, 4a, 4b, 5a, 5b, 5b, 9), characterized in that said lighting means consist in part of said wind turbine ( 1, Ibis, lter) mounted at the end of the foot or mast (2) of said lighting device. 2- lighting device according to claim 1, characterized in that the wind turbine (1) consists of blades or fins (4) arranged around a rotating vertical axis and carrying light sources (5) and diffusing the light issued. 3- lighting device according to claim 1, characterized in that the wind turbine (Ibis, lter) is in the form of a frustoconical cylinder (9) carrying blades or vanes (4a, 4b) at its outer periphery, said cylinder being rotatably mounted around light sources (5a, 5b) and for diffusing the light emitted by said light sources (5a, 5b). 4- Lighting device according to claim 3, characterized in that said frustoconical cylinder (9), mounted on the foot or mast, is oriented to flare upwards. 5- lighting device according to the preceding claim, characterized in that the frustoconical cylinder (9) carries at its upper end a cap or dome (13) carrying the light sources (5a, 5ter) oriented downwards and / or a solar energy device (7). 6. Lighting device according to one of the preceding claims, characterized in that the blades or vanes (4, 4a, 4b) of said wind turbine (1, Ibis, lter) are curved. 7- lighting device according to one of the preceding claims, characterized in that the blades or fins (4ter) of said wind turbine (lter) are arranged helically. 8- Lighting device according to one of claims 1 to 5, characterized in that the blades (4, 4a) of said wind turbine (1, ibis) are straight. 9- lighting device according to one of claims 1 to 8 except claim 7, characterized in that the blades or fins (4, 4bis, 4ter) of said wind turbine (1, Ibis) are arranged vertically. 10- Lighting device according to one of the preceding claims, characterized in that the light sources (5, 5a, 5b) consist of light emitting diodes or LEDs, fluorescent tubes, halogen lamps. 11- lighting device according to one of the preceding claims, characterized in that the wind turbine (1, Ibis, lter) is made of translucent polycarbonate. 12- A lighting device according to one of the preceding claims, characterized in that it further comprises means for stopping said wind turbine (1, Ibis, bind). 13- lighting device according to one of claims 1 to 12, characterized in that the blades or fins (4, 4bis, 4ter) of said wind turbine (1, Ibis, lter) are retractile. 14- Lighting device according to claim 13,20characterized in that the wind turbine (Ibis, bind) shaped frustoconical cylinder carrying said blades or vanes (4a, 4b) is provided with slots (11, 12) for retraction said blades or vanes (4a, 4b). 15- Lighting device according to one of claims 2 to 14, characterized in that it is off when the blades or vanes (4, 4bis, 4ter) of the wind turbine (1, Ibis, lter) turn and lit when they are stopped. 16- Lighting device according to one of the preceding claims, characterized in that it further comprises a solar energy device (7). 17- Lighting device according to claim 16, characterized in that said solar energy device (7) is disposed on top of said lighting device.