FR3135861A1 - Lighting device, electronic control card - Google Patents

Abstract

The present invention relates to a lighting device (1) controllable by means of a removable electronic control card (3, 3'), said lighting device (1) comprising an integrated circuit electronic card, called an LED card ( 2), comprising at least one set of light sources (23), the electronic control card (3, 3') being arranged to connect removably via a mezzanine mounting to the LED card (2). The electronic control card (3, 3') includes means for attenuating and/or increasing the intensity and/or modifying the spectrum of the light emitted by the lighting device. The invention also relates to a device for positioning (4) the electronic control card (3, 3') within the lighting device (1). Figure 1

Description

Lighting device, electronic control card Preamble

The present invention, which belongs to the field of lighting, relates to a lighting device, an electronic control card capable of allowing the control of the lighting device and a box for positioning the electronic control card in the lighting device.

Certain lighting devices typically have one or more light sources, that is to say for example one or more bulbs that can be turned on or off simultaneously using a switch. The operation of the electrical circuit allowing the control of this type of lighting device is simple: when a switch is in the closed position, the light source(s) are on, while they are off when the switch is in position. opened.

Some lighting devices include a plurality of light sources that can be turned on or off alternately by means of several switches. Some lighting devices are equipped with a timer that is triggered when the switch is moved to the closed position and allows the light sources to be automatically turned off.

Finally, certain lighting devices are associated with a motion detector, the latter activating the lighting device when a presence is detected nearby.

All of the aforementioned lighting solutions operate within a simple electrical installation, without the intervention of complex electronic components.

General description

Certain recent lighting devices, comprising one or more light sources, allow the application of a variation in the intensity (“ dimming ” in English) of the light they produce. This is generally achieved by means of an eco-dimmer including, for example, a button allowing the light intensity produced by the lighting device to be manually reduced or increased.

More complex lighting devices may include different light sources emitting a light signal at distinct wavelengths, thus producing, for example, different colored lights.

This type of lighting device is particularly suited to certain technical fields, in particular agricultural or horticultural lighting.

To promote the growth of a plant, it is in fact advantageous to supplement the natural lighting produced by the sun, or even to compensate for its absence in certain cases, by means of artificial lighting so that the plant receives a surplus of light , in particular when natural lighting is insufficient or corresponds to radiation which does not make it possible to cover all the wavelengths of the synthetically active photo band.

To develop correctly, a plant needs to receive photo-synthetically active radiation, that is to say radiation whose spectrum covers the entire band of wavelengths ranging from 400 to 700 nanometers. (nm). Such radiation, which corresponds to so-called white light, is generally provided by natural lighting. Indeed, the sun produces balanced light across all wavelengths of the synthetically active photo band (400-700 nm).

When natural lighting is insufficient or non-existent, it is therefore necessary to use an agricultural lighting device emitting artificial lighting and which may include different types of lamps or bulbs.

For example, such agricultural lighting devices may include at least one incandescent lamp, at least one discharge lamp, at least one halogen bulb, CMH, MH or even at least one compact fluorescent lamp.

Such agricultural lighting devices may also include at least one discharge lamp, for example a sodium vapor lamp.

Such agricultural lighting devices may include at least one light-emitting diode (LED) lamp. The use of light-emitting diodes is economically advantageous, whether in terms of electrical energy consumption or lifespan. Compared to the aforementioned lighting solutions, a light-emitting diode in particular has high energy efficiency.

In addition, the heat released by an LED is moderate compared to that released by at least some of the aforementioned lighting solutions. The use of LEDs therefore allows better control of environmental conditions, and in particular the ambient temperature.

Finally, an LED has the particularity of being able to emit radiation in a narrow wavelength band, for example a band of around 20nm. An LED can therefore emit radiation centered on a given wavelength, with a variation of approximately 10nm on either side of this wavelength.

The use of such monochromatic or quasi-monochromatic diodes, for which the emission energy is concentrated over a narrow wavelength range, is advantageous in the field of agricultural lighting.

Indeed, certain wavelengths are more efficient than others in terms of photosynthesis. Red light, which corresponds to the 600-700 nm band, indeed maximizes the rate of photosynthesis. It is therefore particularly interesting to subject a plant to this type of light.

Although it is advantageous to favor red light, it is nevertheless important that this is not done to the detriment of other types of light: in particular blue light (400-500 nm) and green light (500-600 nm). nm) which must also be received by the plant in sufficient quantity to allow its stable and harmonious development.

Blue and green light are generally provided in sufficient quantity by natural lighting. At certain times of the day, however, particularly at the beginning or end of the day, it is necessary to compensate for the sunlight, which has become too weak, so that the plant continues to receive sufficient blue and green light. .

In certain closed environments, particularly those devoid of natural lighting, artificial lighting must necessarily cover all the wavelengths of the synthetically active photo band and this can be achieved by means of so-called white light.

The synthetically active photo radiation can also be supplemented by radiation in the band ranging from 700 to 780 nm, corresponding to far red, and by radiation in the band ranging from 340 to 400 nm corresponding to Ultra-Violets of the UV-type. HAS.

Beyond the phenomenon of photosynthesis, a plant has in fact different photoreceptors sensitive to certain very specific wavelengths (for example, far red or UV-A) which must therefore be stimulated.

An agricultural and/or horticultural lighting device must therefore typically have different light sources emitting at different wavelengths and therefore producing lights of distinct colors. We therefore understand that the use of LEDs producing lights of different colors is particularly suitable for this type of lighting device.

For example, an agricultural or horticultural lighting device may comprise a set of primary lighting units arranged to produce radiation in a primary wavelength band ranging from 600 to 700 nm, and at least one set of secondary lighting units arranged to produce radiation in a secondary wavelength band, for example a band ranging from 400 to 500 nm (blue light) or a band ranging from 500 to 600 nm (green light) or a band ranging from 700 to 780 nm (far red) or a band ranging from 340 to 400 nm (UV-A rays) or even a band from 400 to 700 nm (white light).

Such an agricultural or horticultural lighting device is capable of producing overall radiation whose spectrum is fixed over time, that is to say that the share of the different radiations making up the overall radiation remains the same over time. . In this scenario, it is however possible to vary the number of photons overall emitted per second (photon flux expressed in µmol.s ^-1 ) by the agricultural lighting device, which constitutes, according to dedicated English terminology , simple or global dimming .

To promote optimal and rapid growth of the plant, it is also important to be able to favor certain types of light over others depending on natural lighting conditions, for example, or even climatic conditions.

It is therefore necessary to be able to control or control the lighting device, manually or automatically, by separately varying the number of photons emitted per second in each of the aforementioned wavelength bands in order to fully satisfy the needs of the plant. and/or the grower’s objectives.

To do this, it is necessary to be able to vary the electrical power consumed by at least some of the sets of primary and secondary lighting units, since the quantity of photons emitted by each set of lighting units depends directly on the electrical power consumed.

Such a variation in the electrical power consumed by a particular set of lighting units can be implemented by means of an electronic control module comprising at least one electrical power converter.

Such an electrical power converter can for example be a power electronics circuit or an electromechanical device.

More particularly, such an electrical power converter may in particular be a direct current converter capable of varying the intensity of the direct current circulating through a set of lighting units. According to another possibility, such an electrical power converter is capable of converting a direct voltage across a set of lighting units into another direct voltage of lower or higher value, for example a DC-DC converter . Finally, such an electrical power converter is capable of converting a direct current source from one voltage level to another lower or higher voltage level.

Thus, a controllable agricultural lighting device, as described above, is integrated into a complex electronic system comprising different electronic components capable of controlling the device. In addition, such an agricultural lighting device can therefore comprise several sets of light-emitting diodes, monochromatic or not, emitting radiation centered on different wavelengths.

To produce such a device in a simplified, compact, robust and inexpensive manner, it may be advantageous to integrate the different light-emitting diodes on an electronic card called an LED card. Thus, the fact of integrating the different sets of lighting units on the same electronic card makes it possible to simplify the whole and reduce the space necessary for the integration of the lighting units within the device.

This has the advantage of providing less expensive, and above all less bulky, lighting devices, which is of undeniable interest in the field of horticultural lighting, whether indoors where available space is often limited or under greenhouse where it is desirable to limit the shadow cast by the lighting device as much as possible.

For even more compactness of the lighting device, the LED card can also integrate the electronic control module, that is to say the electronic elements necessary for implementing the control of the lighting device, and in particularly the electrical power converter(s).

However, such integration has the disadvantage of making the lighting device inseparable from the original electronic control card. Thus, the appearance of a malfunction in a single electronic element of the control module will in this case require the replacement of the entire LED card, or even the agricultural lighting device as a whole.

Furthermore, an agricultural lighting device comprising such an LED card with an integrated control module also has the disadvantage of only allowing one type of control without the possibility of changing the control functionalities of the lighting device. .

However, the same agricultural lighting device can operate with different types of control modules and it is interesting to be able to interchange the control modules according to the needs of the cultivated plant or the requirements of the cultivator.

For example, certain control modules only allow the application of a variation in the overall electrical power consumed (“ dimming ”), that is to say an increase or decrease in the electrical power consumed by the lighting device. in its entirety.

As mentioned above, other control modules allow the application of a variation in the electrical power consumed by at least one set of lighting units belonging to an agricultural lighting device comprising for example a first set of Red LEDs, a second set of green LEDs, and a third set of blue LEDs. By increasing, for example, the flow of photons emitted by the red LEDs, this type of control module makes it possible to qualitatively vary the emission spectrum of the lighting device.

Such a spectral variation control module is particularly useful when it comes to supplementing natural lighting, since it is for example generally desirable to maximize the share of reds during a large part of the day, while allowing compensate for an absence of blue light from the solar spectrum at the beginning and end of the day.

Such a spectral variation control module can optionally also allow “ dimming ”, that is to say the increase or decrease in the overall electrical power consumed by the lighting device as a whole.

The present invention therefore aims to provide a controllable lighting device which is robust and compact and allows simple replacement and/or rapid and easy repair of its control module.

Thus, it is useful to plan the implementation of an electronic control module which is both independent of the lighting device and the electronic card with light-emitting diodes or LED card. In particular, it is advantageous to provide a removable electronic control module, so as to allow its insertion and/or removal from the lighting device with a view to its replacement by another control module with distinct functionalities, or even with maintenance or repair purposes.

In addition and according to a complementary aspect, it is desirable to provide means adapted to the easy, rapid and secure insertion and/or removal of the electronic control module in the lighting device.

To this end, the first object of the present invention is an electronic card with an integrated circuit, called a LED card, comprising:

- a first part on which is arranged at least one set of lighting units arranged to produce radiation in a wavelength band,

- a second part devoid of lighting units and intended for mounting on the mezzanine of an electronic control card, said second part comprising at least two connectors configured to allow connection and/or disconnection and mounting on the mezzanine of the electronic control card on said second part of the LED card.

According to one possibility, the lighting units are light-emitting diodes (LEDs) arranged, regularly or irregularly, along the first part of the LED card.

According to one possibility, the LED card is of rectangular shape, said first part occupying a first surface of the LED card of larger size than a second surface occupied by said second part devoid of lighting units.

According to one possibility, the first part occupies a surface of the LED card of rectangular shape, the second part occupying a surface, for example of rectangular or square shape, located at one of the ends of the LED card.

The first part and the second part of the LED card are arranged so that, when the driver card is mounted on the mezzanine on the LED card, only the second part of the LED card is covered, partially or totally, by the control card. Thus, the control card, once connected to the LED card, only covers the part of the LED card devoid of lighting units, and does not cover the part of the LED card where the lighting units are located. .

According to one possibility, said at least two connectors of the LED card are male or female connectors of the pin strip or pin strip type, each connector comprising at least four pins or pins.

According to one embodiment, at least two connectors of the LED card are oriented in distinct directions. For example, a first connector is oriented in a direction parallel to the longitudinal axis of the LED card, while a second connector is oriented in a direction orthogonal to the longitudinal axis of the LED card.

According to one possibility, the LED card includes exactly two connectors. For example, each of the two connectors are pin strips, the longitudinal axis of one of the strips being orthogonal to the longitudinal axis of the other strip.

According to one embodiment, the LED card comprises a set of primary lighting units arranged to produce radiation in a primary wavelength band and at least one set of secondary lighting units arranged to produce radiation in a secondary wavelength band. Thus, the LED card can produce radiation, called primary radiation, in a band of so-called primary wavelength, and at least one radiation, called secondary radiation, in a second band of so-called secondary wavelength.

According to one possibility, the LED card comprises a first set of secondary lighting units arranged to produce a first secondary radiation in a first secondary wavelength band and a second set of secondary lighting units arranged to produce a second secondary radiation in a second secondary wavelength band.

According to one possibility, the LED card includes at least three sets of secondary lighting units. In all these cases, all the lighting units are arranged on said first part of the LED card, the second part of the LED card including the connectors being devoid of lighting units.

According to a second aspect, the present invention relates to a lighting device comprising:

- the LED card conforming to that described above,

- a frame intended to serve as a support for the LED card and means for holding the LED card within the frame, said frame further having a housing arranged to accommodate an electronic control card.

According to one embodiment, the lighting device further comprises a removable hatch for closing the housing.

The removable hatch is for example configured to be positioned opposite the part of the LED card devoid of lighting units so as to prevent any access to the housing of the lighting device during operation. Thus, the hatch serves as a cover for closing the housing of the lighting device and makes it possible to protect the control card when the latter is positioned within the housing of the lighting device.

According to one possibility, the hatch is made up of a metal plate provided with fixing means which cooperate with corresponding fixing means located on the frame of the lighting device and in particular around the housing of the lighting device.

When in the closed position, the hatch also serves as a radiator or dissipator for the electronic control card. Thus, the hatch is useful in order to avoid any overheating of the electronic control card, which makes it possible to protect the latter, but also the LED card and more broadly the lighting device as a whole, and to avoid the occurrence possible damage or malfunctions. The thermal connection between the electronic control card and the hatch, allowing heat transfer from the electronic control card to the hatch, is done for example with a thermal pad.

According to one possibility, the lighting device further comprises cooling means arranged so as to cool and/or prevent any abnormal overheating of the LED card and more generally of the entire lighting device. For example, such cooling means include a heat sink of the finned heat sink type.

According to a third aspect, the present invention relates to an electronic control card for a lighting device conforming to that described above, said electronic control card being arranged to be positioned removably within the housing of the device lighting, said electronic control card further comprising at least two connectors arranged to allow its connection and/or disconnection and its mounting on the mezzanine on the LED card conforming to that described above.

According to one possibility, said at least two connectors of the electronic control card are male or female connectors of the pin strip or pin strip type, each of the connectors comprising at least four pins or pins.

According to one embodiment, at least two connectors of the electronic control card are oriented in distinct directions. For example, a first connector is oriented in a direction parallel to the longitudinal axis of the LED card, while a second connector is oriented in a direction orthogonal to the longitudinal axis of the LED card.

According to one possibility, the electronic control card comprises exactly two connectors. For example, each of the two connectors are pin strips, the longitudinal axis of one of the strips being orthogonal to the longitudinal axis of the other strip.

In particular, said at least two connectors of the electronic control card are arranged so as to cooperate with said at least two connectors located on the second part of the LED card. Thus and according to a particular embodiment, each male connector of the electronic control card is intended to connect to a female connector of the LED card.

The arrangement of the connectors on the LED card on the one hand, and the electronic control card on the other hand, allows the mounting or positioning on the mezzanine of the electronic control card on the LED card. By mezzanine mounting is meant a particular positioning of the electronic control card relative to the LED card, said cards, once connected to each other, being located in parallel planes, or substantially parallel, and close .

This mezzanine mounting of the two electronic cards ensures the compactness and simplicity of the whole, the electronic control card being positioned so as to be inserted into the housing of the lighting device, said housing being able to be closed at means of the removable hatch.

Such a mezzanine assembly makes it possible in particular to obtain a lighting device of harmonious, simple and compact structure, which makes it possible to ensure the safety of the whole by means in particular of the housing and the hatch or cover of protection.

According to one embodiment, the electronic control card comprises means configured to increase and/or reduce the electrical power consumed by the lighting device.

Thus, the function of such an electronic control card is to allow “ dimming ”, that is to say an attenuation and/or an increase in the intensity of the lighting produced by the lighting device in his outfit.

According to one embodiment, the electronic control card comprises means configured to increase and/or decrease the electrical power consumed by at least one of the sets of primary and/or secondary lighting units of the LED card.

The function of such an electronic control card is therefore also to allow modification of the emission spectrum of the lighting device, for example by attenuating the intensity of the lighting produced by the sets of secondary lighting units. while increasing the intensity of the lighting produced by the set of primary lighting units.

According to one possibility, the means configured to increase and/or decrease the electrical power consumed by at least some of the sets of lighting units comprise electrical power converters and for example DC-DC converters.

According to a fourth aspect, the present invention relates to a device for positioning an electronic control card, conforming to that described above, within a lighting device conforming to that described above, said positioning device comprising:

- an outer frame comprising at least three faces and arranged so as to be able to be arranged at least partially in a housing of the lighting device, each of the faces of the outer frame comprising a lower edge and an upper edge, the lower edge of the 'at least one of the faces of the outer frame being arranged so as to support the lighting device on or near the LED card when the outer frame is arranged at least partially within the housing of the lighting device,

- an inner frame comprising at least three faces whose outer walls are arranged opposite the inner walls of the faces of the outer frame, each of the faces of the inner frame comprising a lower edge and an upper edge, said inner frame comprising in in addition to holding means configured so as to maintain the electronic control card within the positioning device in a plane orthogonal to at least one of the faces of the interior frame, said interior frame being configured to slide along the internal walls of the faces of the outer frame between at least one high position and one low position, the passage from the high position to the low position reducing the distance between the lower edge of at least one of the faces of the inner frame and the lower edge of at least one of the faces of the external frame so as to allow the electrical connection between the connectors of the electronic control card and the connectors of the LED card.

The sliding of the lower frame and its passage from its high position to its low position also has the effect of reducing the distance between the upper edge of at least one of the faces of the inner frame and the upper edge of one minus the faces of the outer frame.

The positioning device described above advantageously makes it possible to facilitate the insertion of the electronic control card into the housing of the lighting device, as well as the positioning on the mezzanine of the electronic control card and its electrical connection to the LED card by allowing the connectors to snap together.

In particular, once the positioning device positioned in the housing of the lighting device and the electronic control card positioned on the support and/or holding means and facing the location of the LED card comprising said connectors, the sliding of the interior frame between its high position and its low position causes the insertion of the pins of the male connectors of the electronic control card into the pins of the corresponding female connectors of the LED card.

Advantageously, the positioning device makes it possible not to directly manipulate the electronic control card when it is connected to the LED card, which makes it possible to avoid any risk of burns and/or injury, particularly in the possible case of a hot replacement of the electronic control card on the production site.

According to one possibility, the positioning device is made of plastic material, for example thermoplastic made from poly lactic acid filaments (PLA filaments).

In addition and advantageously, the positioning device allows easier and secure positioning, which limits the risk of damaging the electronic control card and/or the LED card when they are connected, by pressing with the fingers. for example too loud or in inappropriate places.

According to one possibility, the internal frame of the positioning device is of generally parallelepiped shape and comprises at least four faces whose lower edges are coplanar. According to this possibility, the upper edges of said at least four faces of the interior frame are also coplanar.

According to one possibility, the external frame of the positioning device is of generally parallelepiped shape and comprises at least four faces whose lower edges are coplanar. According to this possibility, the upper edges of said at least four faces of the outer frame are also coplanar.

Thus, the positioning device takes the form of a housing open on at least one of its faces and comprising within it means for supporting and/or holding an electronic card, for example but in a non-limiting manner. of a rectangular electronic card.

Said support and/or holding means are integral with the interior frame, and comprise for example at least two transverse edges joining at least two faces of the interior frame.

In particular, once positioned within the positioning device, the electronic card is held both by said transverse edges and the internal walls of the faces of the internal frame.

The outer frame and/or the inner frame further comprise means intended to limit in translation the sliding of the inner frame between its high position and its low position.

Said means may for example comprise elements forming a stop arranged on the internal walls of at least some of the faces of the external frame.

Said means may also comprise orifices made in at least some of the faces of the outer frame, said orifices being arranged so as to cooperate with projecting elements arranged on the outer wall of at least some of the faces of the inner frame.

Thanks to its different elements, the inner frame cannot separate from the outer frame, the path of its sliding remaining limited.

According to one embodiment, the positioning device further comprises release means intended to allow the release of the positioning device outside the housing of the lighting device.

In particular, the release means are intended to facilitate the extraction and/or removal of the positioning device once the electronic control card is connected to the LED card.

According to one possibility, said release means comprise a piston arranged in a housing provided for this purpose. For example, the accommodation is provided within said support and/or holding means secured to the interior frame.

Said piston is able to slide, within its housing, in a direction orthogonal to the plane defined by the electronic control card when it is positioned in the positioning device, between at least a first high position and at least a second so-called low position.

The piston and/or its housing further comprise means making it possible to limit in translation the sliding movement of the piston in its housing. Thus, the piston cannot separate from the positioning device.

When the positioning device is positioned within the housing of the lighting device and the electronic control card is connected to the LED card, moving the piston from its high position to its low position allows the device to be gradually released for positioning the housing of the lighting device.

According to one possibility, the release means further comprise at least one ear intended to facilitate the release of the positioning device once the electronic control card is connected. For example, there are two ears and they are arranged on or in the support and/or holding means, for example near the piston, so that they facilitate the release of the positioning device.

According to one possibility, the positioning device comprises means allowing the passage of at least one cable, for example a power cable, when the positioning device is positioned within the housing of the lighting device.

For example, the means allowing the passage of at least one cable comprise at least one rounded portion made in the lower edge of at least one of the faces of the external frame.

Description with reference to the figures

The invention will be better understood with the help of the detailed description which is set out below with reference to the appended drawings in which:

There is an exploded view of a lighting device according to one embodiment of the invention.

There is a view of the lighting device of the in operating situation.

THE has schematically illustrate the disconnection and removal of a first control card of the lighting device from the .

THE has schematically illustrate the insertion and connection of a second control card of the lighting device according to the invention.

THE has illustrate the insertion and connection of the second control card of the lighting device using a positioning device according to the invention.

There represents an exemplary embodiment of the lighting device 1 according to the invention. The lighting device 1 comprises in particular a frame 11, for example a metal frame, serving as a support for a printed circuit electronic card 2, called an LED card, comprising at least one lighting unit 23, for example at least one diode electroluminescent. The lighting device also includes means 111 for holding the LED card within the frame 11. The lighting device can also include a heatsink 14, for example a finned heatsink making it possible to avoid overheating of the lighting device. lighting, the LED card or even some of the lighting units.

The lighting device 1 also has a housing 12 within which an integrated circuit electronic card 3, called a control card, can be positioned, integrating a control module of the lighting device. For example, the control module integrated on the control card 3 makes it possible both to apply a variation in the flow of photons emitted by the lighting device as a whole, but also to apply a variation to the flow of photons emitted by each of the sets of primary and secondary lighting units.

The control card 3 also has two large notches to facilitate its insertion and/or removal within housing 12 of the lighting device. In addition, a hatch 13, for example a metal plate, is arranged to be placed opposite the control card once the latter has been inserted into housing 12 of the lighting device.

The hatch 13 therefore serves as a closing cover for the housing 12, but also, when it is in the closed position, as a radiator for the electronic control card. The hatch 13 is therefore useful in preventing any overheating of the electronic control card 3, which protects the latter and prevents the occurrence of possible damage or malfunctions. The thermal connection between the electronic control card 3 and the hatch 13, allowing the transfer of heat from the card 3 to the hatch 13, is done with a thermal pad.

The lighting device 1 and/or the hatch 13 may include removable fixing means allowing the hatch 13 to be securely held on the lighting device (1) in order to prevent any untimely fall of the hatch.

There represents the lighting device 1 of the in operating situation. On the , the hatch 13 is positioned so as to close the housing 12 of the lighting device dedicated to housing the control card 3. According to one possibility, the lighting device 1 comprises hooking means allowing it to be held in place. suspension on a horizontal beam.

THE has illustrate the disconnection and removal of the control card 3 shown on the as being mounted on the mezzanine on the LED card 2. The control card 3 has two notches facilitating its removal from the housing 12 of the lighting device. On the , the control card 3 appears disconnected from the LED card, revealing its male connectors 31 and 32 arranged to connect to the female connectors 21 and 22 of the LED card. Finally, the provides an overview of the lighting device 1 and the driver board disconnected and removed from housing 12.

THE has illustrate the connection and insertion of a second control card 3' of the lighting device 1. For example, the control card 3' integrates a control module allowing the implementation of a fixed spectrum during the time, and to achieve “ dimming ”, that is to say an increase or decrease in the flow of photons emitted overall by the lighting device.

There represents a view of the lighting device without the hatch (13), the housing (12) being visible as well as the two connectors 21 and 22 of the LED card. On the And , only one of the two connectors 31' and 32' of the control card is visible while the illustrates the positioning of the two connectors 21 and 22 oriented in a different direction from each other, which has the particular advantage of serving as a misleading factor when inserting the card into the housing and connecting it to DEL card 2. Finally, the represents the card 3' inserted in the housing 12 of the lighting device 1, placed opposite a part of the card 2, and connected to the latter so as to be mounted on the mezzanine on the card 2.

There represents, in perspective and seen from below, the electronic control card 3' and its male connectors 31' and 32' on the one hand, and the positioning device 4 on the other hand.

The positioning device 4 comprises an outer frame 5 comprising a plurality of faces each comprising a lower edge 49 and an upper edge 47. The positioning device 4 also comprises an inner frame 6 comprising a plurality of faces each comprising a lower edge 48 and an upper edge 44.

The outer walls of the faces of the inner frame 6 are arranged opposite the inner walls of the faces of the outer frame 5.

The interior frame 5 of the positioning device 4 is configured to slide along the internal walls of the faces of the exterior frame between at least one high position, said high position being visible for example on the and a low position, said low position being visible on the .

Moving from the high position to the low position reduces the distance between the lower edge 49 of at least one of the faces of the inner frame 6 and the lower edge 48 of at least one of the faces of the outer frame 5 as well that the distance between the upper edge 47 of at least one of the faces of the outer frame 5 and the upper edge 44 of at least one of the faces of the inner frame 6.

Thus, the passage of the interior frame 6 from its high position to its low position makes it possible to make the electrical connection between the connectors 31, 31', 32, 32' of the electronic control card 3, 3' and the connectors 21, 22 of the LED card 2 when the positioning device 4 is adequately positioned within the housing 12 of the lighting device.

The sliding movement of the interior frame 5 between its high position and its low position causes, for example, the insertion of the pins of the male connectors 31, 31', 32, 32' of the electronic control card 3, 3' into the pins of the corresponding female connectors 21, 22 of LED card 2.

The positioning device 4 comprises means 444 for supporting and/or holding an electronic card. Said support and/or holding means 444, secured to the interior frame 6, make it possible to maintain an electronic card within the positioning device 4, in a plane orthogonal to at least some of the faces of the interior frame 6 and/or to at least some of the faces of the outer frame 5 as shown in the .

There represents, in perspective and seen from below, the positioning device 4 within which the electronic control card 3' is positioned and held both by the support and/or holding means 444 and at least some of the faces of the inner frame 6.

On the are also shown means 51, 52, 61 intended to limit in translation the sliding of the internal frame between its high position and its low position.

Said means 51, 52, 61 comprise elements 51 forming a stop arranged on the internal walls of at least some of the faces of the external frame 5.

Said means 51, 52, 61 may also comprise orifices 52 made in at least some of the faces of the outer frame 5, said orifices being arranged so as to cooperate with elements 61 forming a projection arranged on the outer wall of at least some of the faces of the inner frame 6.

Thanks to these different means 51, 52, 61, the travel of the interior frame 6 is limited in both directions and the latter cannot separate from the exterior frame 5.

The lower edge 49 of one of the faces of the outer frame 5 has two rounded portions 45, 46 allowing, when the outer frame is arranged within the housing 12 of the lighting device 1, as shown in the , to allow the passage of two cables, for example power cables intended to power the LED card 2.

There represents, in perspective and seen from above, the positioning device 4 and a part of the lighting device 1 showing in particular its housing 12 and the second part of the LED card 2 comprising the connectors 21, 22. As this is visible on the And , the positioning device and in particular its outer frame 5 are arranged so as to be able to be partially arranged in the housing 12 of the lighting device, the lower edge 49 of each of the faces of the outer frame 5 being arranged so to come to support the lighting device 1 on or near the LED card 2, and in particular on or near the second part of the LED card, when the external frame is arranged within the housing 12 of the device lighting 1.

The positioning device 4 also includes release means 41, 42, 43, visible for example on the | ] And , intended to allow the release of the positioning device outside of the housing 12 of the lighting device 1. In particular, a piston 41 is arranged so as to be able to slide within a housing made in the means of maintaining 444 secured to the external frame 6 of the positioning device.

The piston 41 is arranged so as to slide, in its housing and in a direction orthogonal to the plane defined by the electronic control card 3, 3' when it is positioned in the positioning device, between at least one position high, said high position being visible for example on the , and at least one low position, said low position being visible on the .

The passage of the piston 41 from its high position to its low position makes it easier to disengage, or remove, the positioning device 4 once the electronic control card 3, 3' is connected to the LED card 2 as is represented at the .

In addition, lugs 42 and 43 can be arranged on the holding means 444 secured to the interior frame 6 so as to facilitate the release, or removal, of the positioning device 4 once the electronic control card 3, 3 ' connected to LED card 2.

The piston 41 comprises means making it possible to limit in translation its sliding movement in its housing, for example, the piston, of generally cylindrical shape, can comprise a first section of diameter strictly less than the diameter of the housing, and a section of greater diameter to the diameter of the housing, this making it possible to block the downward sliding movement of the piston. In addition, the housing within which the piston 41 slides may include means (not shown) intended to block the upward sliding movement of the piston.

Note that other types of electronic control cards have total compatibility with the lighting device described below and can also cooperate with the positioning device described in order to be correctly and quickly positioned within the lighting device. For example, those allowing the application of a variation of the emission spectrum of the lighting device without the possibility of “ dimming ”, and those allowing only the implementation of a fixed spectrum without “ dimming ”. The presence and adequate arrangement of the two connectors on these different types of control cards in fact allow their connection to the LED card of the control device.

According to the invention, a defective and/or unsuitable electronic control card can be extracted from the lighting device with a view to repairing it or replacing it with a similar control module. Positioning the repaired and/or replacement electronic control card is done easily and quickly using the positioning device.

Furthermore, by allowing the replacement of a first control card with a second control card with functionalities different from the first, the invention allows the provision of a scalable and modular lighting device, making it possible to achieve different spectra. dynamically or not, with or without “ dimming ”. Thus, when the needs of the grower or the plant grown change, it is no longer necessary to replace the entire lighting device, since the latter can be reused with a control module adapted to the new application.

Claims (10)

Integrated circuit electronic card, called LED card (2), comprising:

• A first part on which is arranged at least one set of lighting units (23) arranged to produce radiation in a wavelength band;
• A second part devoid of lighting units and intended for mounting on the mezzanine of an electronic control card (3, 3'), said second part comprising at least two connectors (21, 22) configured to allow connection and/or or disconnecting and mounting on the mezzanine of the electronic control card (3, 3') on said second part of the LED card (2).

LED card (2) according to claim 1, characterized in that at least two connectors (21, 22) are oriented in distinct directions. LED card (2) according to one of claims 1 or 2, characterized in that it comprises:

• A set of primary illumination units arranged to produce radiation in a primary wavelength band;

• At least one set of secondary illumination units arranged to produce radiation in a secondary wavelength band.

Lighting device (1) characterized in that it comprises:

• An LED card (2) according to one of claims 1 to 3;
• A frame (11) intended to serve as a support for the LED card (2) and means (111) for holding the LED card within the frame (11), said frame (11) further having a housing (12) arranged to accommodate an electronic control card (3, 3');

Lighting device (1) according to claim 4, further comprising a removable hatch (13) for closing the housing (12). Electronic control card (3, 3') of a lighting device (1) according to one of claims 4 or 5, said electronic control card (3, 3') being arranged to be positioned in a removable manner within the housing (12) of the lighting device (1), said electronic control card further comprising at least two connectors (31, 31', 32, 32') arranged to allow its connection and/or disconnection and its mezzanine mounting on an LED card (2) according to one of claims 1 to 3. Electronic control card (3, 3') according to claim 6, characterized in that it comprises means configured to increase and/or reduce the electrical power consumed by the lighting device (1). Electronic control card (3, 3') according to one of claims 6 or 7 taken in their dependence on claim 3, characterized in that it comprises means configured to increase and/or reduce the electrical power consumed by at least one of the sets of primary and/or secondary lighting units of the LED board (2). Device for positioning (4) an electronic control card (3, 3') according to one of claims 6 to 8 within a lighting device (1) according to one of claims 4 or 5, said positioning device (4) comprising:

• An outer frame (5) comprising at least three faces and being arranged so as to be able to be arranged at least partially within a housing (12) of the lighting device (1), each of the faces of the outer frame (5) comprising a lower edge (49) and an upper edge (47), the lower edge (49) of at least one of the faces of the outer frame being arranged so as to support the lighting device (1) on or near the LED card when the outer frame (5) is arranged within the housing (12) of the lighting device (1);

• An inner frame (6) comprising at least three faces whose outer walls are arranged opposite the inner walls of the faces of the outer frame (5), each of the faces of the inner frame (6) comprising a lower edge (48 ) and an upper edge (44), said lower frame (6) further comprising holding means (444) configured so as to hold the electronic control card (3, 3') within the positioning device ( 4) in a plane orthogonal to at least one of the faces of the interior frame (6), the interior frame (6) being configured to slide along the internal walls of the faces of the exterior frame (5) between at least one high position and one low position, the passage from the high position to the low position reducing the distance between the lower edge (48) of at least one of the faces of the inner frame (6) and the lower edge (49) of one at least faces of the outer frame (5) so as to allow electrical connection between the connectors (31, 31', 32, 32') of the electronic control card (3, 3') and the connectors (21, 22 ) of the LED card (2).

Positioning device (4) according to claim 9 further comprising release means (41, 42, 43) intended to allow the release of the positioning device (4) outside the housing (12) of the lighting device (1).