Double glazing with lighting system

Abstract

Double glazing with lighting system, electrically powered, adapted to generate light inside the cavity (110) of the double glazing, providing light inside and / or outside the room in which it is installed; said double glazing with lighting system comprising a motherboard, adapted to allow wireless and / or Bluetooth connections with external devices. Said double glazing with lighting system comprising a profile of the duct (12) with a hollow portion (12') adapted to allow the engagement therein, by sliding, of an aluminum strip (13). Said double glazing comprising, for each side, at least a primary LED strip (15) and a secondary LED strip (19) welded onto the aluminum strip (13) and magnetic connectors (20).

Description

[0001] “Double glazing with lighting system”

[0002] Description

[0003] Field of the invention

[0004] The present invention operates in the field of lighting technology, in particular in lighting apparatuses associated with window frames and structural facades. Even more specifically, the present invention proposes a double glazing with an internal lighting system, engaged along the internal perimeter, which can not only generate light inside the cavity of the double glazing, but which at the same time is easily removable and replaceable without significantly damaging the double glazing. The invention, manageable and usable through the connection with external devices, in addition produces great energy savings thanks to the solar power supply.

[0005] Prior art

[0006] In today's market, thanks to the many technologies implemented, there are lighting systems integrated on the edge or inside single or laminated glass. Such lighting systems, which use LED (Light-Emitting Diode) technology, emit the light emitted by the diodes inside cavities obtained on the same glass.

[0007] These illuminating windows essentially have an ambient lighting or light signaling function, however, very often the luminous efficiency of such illuminated glass windows is generally limited due to light losses caused by the absorption of light by the glass and / or materials in its vicinity.

[0008] In this regard, many innovations have been developed in this field, such as the one presented by patent application EP3600884A1 by ALEXANDRE HENNION AND MATHIEU BERARD. The patent claims an illuminating windows comprising a first transparent glass sheet, perforated with a through hole delimited by an internal wall and at least an inorganic light-emitting diode provided with emitting surface, which emits light in a main emission direction which is substantially orthogonal to the emission surface. Such an invention is characterized by comprising a light-guide element, provided with an input face, a body and an output face, which allows the emitting diode to form a light emission cone of at least 80°. In addition, technologies relating to double glazing have been developed for various purposes. Double glazing is an insulating window unit formed by two or more coupled glass panes, separated by a cavity of dehydrated air or gas, the perimeter of which generally consists of a light metal frame subjected to double sealing, so as to obtain thermal insulation and acoustic insulation.

[0009] As regards various innovative solutions with LED lights used specifically in double glazing, we refer to patent EP2737247B1. It describes a refrigerated multi-pane light cabinet comprising: a first glass sheet and a second glass sheet spaced apart by a blade of gas (air or inert gas); a possible third sheet separated by a blade of gas (air or inert gas); a peripheral light source with a printed circuit support section, with the emission area or face facing one of the plates, acting as a guide for the emitted light. The support of the source is inserted inside a housing surrounded by material and is covered by a cover, placed on the mounting element. The cover and the support of the source, in particular the diodes, are removable from the particular glazing by removing the cover.

[0010] This last invention introduces us to a problem which is common to all these devices, which, even though they mount highly durable LEDs, are still subject to technical and / or wear problems that necessarily require the replacement thereof. Although the known art speaks of a cover for removing them, it still represents an invasive solution not only for the space required to house the LEDs, but also for the limited space accessible from the opening, which in any case makes the extraction thereof difficult. The main difference between the proposed invention and existing solutions is the installation of the LEDs inside the double glazing, which are currently installed outside thereof. In addition, when the LED is positioned under the glass, as in the solutions presented and existing on the market, it does not have a significant lighting effect, since the light passes through the glass merely illuminating the edges, which in turn are covered by the frame; the present invention differs because it generates a real ambient lighting given by the reflective and amplifying effect that the two panes have on the light itself.

[0011] A further object of the present patent application is to overcome the aforesaid problem by means of a support for LEDs which can be engaged and extracted by sliding: the LED strips are applied to an aluminum strip and inserted into a hollow portion, which is filled with polyurethane resin or closed by an extruded polyurethane profile; the polyurethane used in both cases will have UV stabilizing additives and will therefore be resistant to high temperatures and yellowing. In addition, all this will allow the customer, or whomever, to replace the LED strips without completely opening the double glazing, but simply by acting on the side sealant, opening a plastic cap and removing the aluminum strip.

[0012] Therefore, the present document proposes a double glazing integrated with a lighting system which projects light directly inside the cavity, exploiting a polyurethane resin covering, or an extruded polyurethane profile, generating a suggestive, uniform and improved lighting performance. Added to this is the device's ability to exploit sunlight to power itself and the ability to control the light intensity and color, even by means of external devices connected thereto.

[0013] Description of the invention

[0014] According to the present invention, a double glazing is provided with an internal lighting system, consisting of a series of light strips, which can be created with LED, OLED, COB technology both by means of application on flexible or rigid PCBs and applications with glass or optical fiber, or other technologies which allow lighting. The emitted light can advantageously have different shades which vary from cold light to warm light, known as CCT (Correlated Color Temperature) technology, RGB and / or RGB W, including all the colors available on the market. LED strips are also dimmable, meaning they can be adjusted to different light intensities. In one of the embodiments, the invention can preferably use technologies which make the lighting strips capable of changing the color at will, in addition of course to the relative intensity at the discretion of the customer: these are therefore, for example, RGB - RGBW LEDs. The control of the various colors and intensities can occur by means of a motherboard, but also by means of a controller positioned on the glass / window frame, by remote control, or APP from mobile or PC, home automation systems.

[0015] Since the specific effect / functioning of the double glazing is obvious and known to a person with ordinary knowledge in the technical field, its description will be omitted, it is specified in any case that the glass forming the two faces, internal and external, are of quadrangular shape, and the whole system is enclosed within window frames on all four sides: this means that what is described below refers to one side of the double glazing, but is applicable to each thereof.

[0016] Specifically, the double glazing has components known as if it were a traditional double glazing, that is, an element formed by two or more sheets of glass joined together by means of a duct, called a “spacer”. The double glazing is sealed with specific materials so that it remains insulated. Such material is preferably butyl, used for both a first and a second seal, thus preventing air from entering between the two panes of glass. The duct present therein is instead filled with salts that have the function of absorbing all the moisture. Inside the two glass panes, to increase thermal performance, the glass is instead filled with gas.

[0017] In the present invention the duct profile will have a “U”-shaped section with two lateral wings and a hollow part that allow for the insertion of an aluminum strip on which one or more LED strips are applied: such a duct profile and the LED strips are covered by a cover, which in some embodiments of the invention is polyurethane resin (a resin casting which is then solidified) and in other embodiments is a polyurethane cover. The cover in all embodiments not only prevents yellowing thanks to the presence of UV stabilizers, and provides rigidity to the product, but also makes the diffusion of color perfectly uniform inside the cavity. Preferably, the duct profile is made of aluminum or Warm Edge.

[0018] In the case of both polyurethane resin and polyurethane cover, the covers can be produced in both transparent and opaline versions. Such a cover is perfectly fixed and sealed to the “U” duct during assembly so as to close it and to be placed between the LED strips mounted in the hollow portion of the duct profile and the empty space of the double glazing cavity. Thereby, the cover also prevents the gases in the cavity from coming into contact with the LED strips. The end portions of each duct profile are engaged by a cap. The cap features a removable door that can be opened if one or more LED strips need to be replaced. It should be noted that the present invention, in the version with two LED strips, contemplates the operation of one LED strip, while the other has a reserve (redundancy) function in the event of a failure. The activation of the secondary, and therefore “spare” LED strip, is achieved by simply exchanging the power cables, therefore without the need to damage the double glazing, for example by opening it, dismantling parts or carrying out other long and potentially complex operations. If both LED strips are damaged, then the present invention offers the possibility of removing part of the sealant, and opening the cap door to remove the aluminum strip with the LED strips engaging it. The cover, made of polyurethane resin or rigid polyurethane plastic, can be, in some embodiments of the present invention, characterized by special laser processes adapted to increase the distribution of light. Alternatively, the cover can preferably include the application of darkening elements which prevent the passage of the light emitted by the LEDs, obtaining light and shadow effects along the perimeter of the cavity. Said darkening elements, in some embodiments, are special films adapted to improve the efficiency thereof and define the specific direction of the light beam. The films can advantageously be spaced along their length by bands or patterns, such as floral patterns or others, preferably black in color (or in any case very dark) adapted to prevent the passage of light: such a feature allows, when the LED strips are turned on, to obtain said light and shadow effects. For example, in the case of a film with a zebra pattern (alternating black and white stripes), the light will be able to pass only in the areas of the covering which do not have the black bands, creating a discontinuous light effect along the entire perimeter of the double glazing and, specifically, of the cavity. In one of the preferred embodiments, the LED strip is of the flexible type.

[0019] The LED strips are used in the innermost part of the double glazing, that is, they are applied to an aluminum strip, which anchors itself with a sliding effect to the internal portion of the hollow portion of the duct profile: thereby, if a LED strip needs to be replaced, the replacement would occur simply by removing a minimal part of the sealant, opening the cap door, removing the aluminum strip and inserting the new one, without significantly damaging the double glazing since the hollow portion is hermetically sealed by the cover. In fact, by making a small incision on the seal, where the latter is located in the perimeter part of the glass / comer of the window frame - specifically in the area of the lateral sealant as known in the art - it is possible to reach the lateral plastic cap; subsequently, by unscrewing some screws and opening the door obtained on the same cap, it is possible to remove the aluminum strip without damaging the main chamber of the double glazing, i.e., the one containing the gas, and the LED strips can be easily replaced. The door takes up a minimal amount of space on the cap so that only the aluminum strip and the LED strips can be removed and reinserted. The removal of the duct profile is therefore not possible by simply opening the door, as the door is at least partially in contact with the profile itself and blocks an opening smaller than the space occupied by the duct profile section, whereby this cannot be extracted.

[0020] Furthermore, replacing the LED strips is extremely simple since the connection with the other LED strips, related to the other sides of the double glazing, occurs by means of magnetic connectors. Replacement is therefore simple both in the case of a system with a single line of LED strips connected by connectors, and in the case of independent circuits for each side of the double glazing. Such connectors allow the exchange of current and therefore power supply from a LED strip on one side to those on the adjacent sides: they also allow an easy removal of the aluminum profile and reconnection after replacing the new LED strip.

[0021] Merely for the purposes of greater descriptive exhaustiveness, it is specified that with regard to the electrical diagrams and the connection for the smart functions described, the present invention comprises: a main board, called motherboard, necessary for systems with connection to the electrical line and / or a board related to the management of the power supply and battery charging for stand-alone systems with charging by means of solar panel. The circuits, present in a control unit or in a battery-powered controller (controller and battery present for the stand alone systems), are easily interpretable by any person skilled in the art and therefore their features are omitted from the present description, taking for granted that their presence and functionality are implied by those skilled in the art. Such control units can be installed in the customer's electrical panel and connected to the double glazing of the present invention with a four-wire cable, having a final socket which connects to the comer of the double glazing. From an electrical point of view, the present invention can advantageously be provided with a battery module outside the window frame but engaged thereon by means of double-sided adhesive; in an embodiment, such a battery module is engaged on the window of the double-glazing. The battery module is advantageously connected by means of cable from the connector / end cap, up to the fixing / engagement point. Said battery module is adapted to allow turning on / off and / or managing the LED strips in terms of color, light and intensity. The battery module is preferably recharged by means of solar panel, preferably placed along the surface of the window frame and / or outside the double glazing, making the system completely autonomous and facilitating the installation thereof.

[0022] The invention is preferably connected to an electrical home automation system, by means of an electrical connection.

[0023] In one of the preferred embodiments, the invention advantageously comprises a temperature sensor, engaged inside the cavity, so that once the maximum and / or minimum temperature parameters at which the LEDs can work have been set (for example by means of a CPU or in any case by means of a user interface which can connect to the sensor), it acts on the deactivation of the LEDs by switching them off or preventing them from switching on if the temperature is higher or lower than such parameters. Specifically, the LED strips suffer from high temperatures above 50°C: the temperature sensor ensures a greater durability of the LED strips. The temperature sensor can also directly measure the temperature of the LED strips, turning them off when they exceed, for example, said temperature of 50°C. The LED strips are turned off when the temperature sensor sends the measured temperature, for example, to a PLC or another electronic device capable of processing the measured data, comparing them with the set threshold values and intervening on the energy power supply of the LED strips. The temperature sensor is then connected to the LED strips by means of said electronic apparatuses. Preferably, the invention can include a brightness sensor adapted to act as a function of the solar illumination, allowing the automatic switching on and / or off of the LED strips.

[0024] In one of the preferred embodiments, the temperature sensor and / or the brightness sensor can be at least partially immersed within the polyurethane resin so that they are fixed once it solidifies and they have minimal aesthetic impact.

[0025] In another preferred embodiment the invention can comprise at least a video camera, which engages said cavity and is in contact with a profile of the duct. The camera frames an environment inside and / or outside the double glazing: in this case all the electronic boards are integrated into a special small and non-invasive aluminum profile.

[0026] The present invention can advantageously comprise curtains installed inside the double glazing unit: in this case the temperature sensor, the solar sensor and the video cameras occupy an internal space of the aluminum box of the curtain.

[0027] The advantages offered by the present invention are evident in the light of the description presented thus far and will be even clearer thanks to the attached figures and the related detailed description.

[0028] Description of the figures

[0029] The invention will be described hereinafter in at least a preferred embodiment by way of nonlimiting example with the aid of the appended figures, in which:

[0030] - FIGURE 1 shows a section of a double glazing with lighting system with a cover 14 made with a layer of polyurethane resin according to one of the embodiments of the present patent application;

[0031] - FIGURE 2 shows a section of the double glazing with lighting system with a cover 14 which is a polyurethane profile according to one of the embodiments of the present patent application;

[0032] - FIGURE 3 shows a perspective view inside an environment in which two double glazings with lighting systems are installed close to each other according to one of the embodiments of the present patent application;

[0033] - FIGURE 4 illustrates a section of the double glazing with lighting system according to one of the embodiments of the present invention, with specific detail of an end 12" in which a cap 21 is present.

[0034] Detailed description of the invention

[0035] The present invention will now be illustrated by way of a purely non-limiting or binding example, resorting to the figures which illustrate some embodiments with respect to the present inventive concept.

[0036] With reference to FIGS. 1 to 4, the components of a double-glazing with lighting system according to the present invention are shown, consisting of window frames 17 and electrically powered, adapted to generate light inside the cavity 110 / perimeter of the double glazing, where said light also illuminates the internal and / or external environment delimited by the double glazing. It should be noted that the present invention is powered by an electrical connection from a line, or by means of a connection between a control unit and the electronic components of the double glazing with a cable with a JST connector, or it is powered by one or more batteries. The embodiments in which a controller 200 is present and in which there are batteries powering the motherboard and / or the controller 200 and / or other electronic apparatuses of the double glazing are hereinafter defined as stand alone. In addition, the double glazing with lighting system comprises two glass sheets 10, 11 joined together by means of a profile of the duct 12 which is sealed with a sealing material 16 such as butyl to the two glass sheets 10, 11, where the sealing material 16 is adapted to keep the cavity 110 insulated within the internal surfaces 10", 11" of the two glass sheets 10, 11.

[0037] In particular, FIG. 1 and 2 show a cross-section of a double glazing with lighting system according to the present invention.

[0038] The double glazing is electrically powered, emitting light inside a cavity 110 of the double glazing and providing light inside and / or outside the room in which it is installed; said double glazing with lighting system comprises two or more glass sheets 10, 11 mutually joined, on each side, by means of a “U”-shaped profile of the duct 12 and by means of sealing material 16. Said sealing material 16 insulates a cavity 110 delimited by internal surfaces 10", 11" of the glass sheets 10, 11. Said cavity 110 is filled with gas. Said double glazing with lighting system comprises a motherboard, adapted to connect with external devices via wireless and / or Bluetooth technology. The motherboard can be powered by the electrical grid or in standalone mode with a battery system. In said stand-alone embodiments, said motherboard further comprises a board related to power management and battery charging.

[0039] In said double glazing with lighting system, each said profile of the duct 12 has a hollow portion 12' engaged by an aluminum strip 13 which is made to slide inside the hollow portion 12', and by a cap 21. The strip 13 and the cap 21 are placed at least atone end 12" of the profile of the duct 12. Where “placed at least at one end” means that cap 21 and strip 13, on each profile of the duct 12 are placed near (preferably at a distance from the end comprised between 0% and 10% of the length of the internal profile of the duct 12) of at least one of the two ends of each profile of the duct 12. A cap 21 is shown in FIG. 4. Said double glazing with lighting system comprises, for each of its sides:

[0040] - at least a primary LED strip 15, placed on said aluminum strip 13, adapted to emit light.

[0041] Said primary LED strip 15 faces said cavity 110 between said internal surfaces 10", 11". The primary LED strip 15, when turned on, produces a perimeter lighting around the double glazing. Said aluminum strip 13 can be removed by sliding and removing said door 22 of said cap 21;

[0042] - at least a secondary LED strip 19, placed on said strip 13 parallel to said primary LED strip 15. The secondary LED strip 19 also faces said cavity 110 comprised between said internal surfaces 10", 11". The primary LED strip 15, when turned on, produces a perimeter lighting around the double glazing. The secondary LED strip 19 has a backup function in the event of a failure of the primary LED strip 15, allowing the invention to continue to be used without any replacement occurring. In various embodiments of the present invention, the LED strips 15, 19 can have a common or separate and independent electric power supply. The two LED strips 15, 19 can also be installed on a single PCB (Printed Circuit Board) but with the characteristic of always being powered by two different power lines. Specifically, each LED strip 15, 19 will have its own positive and negative power supply, thereby the two LED strips 15, 19 cannot be damaged in the event of over-powering deriving from the main electrical system. In a preferred embodiment of the invention, one of the two poles can be common to both LED strips 15, 19, thus ensuring total autonomy of the two LED strips 15, 19 in the event of over-powering by the main power line;

[0043] - said cap 21 in turn comprising said door 22 fixed to said profile of the duct 12 by means of screws 23. The door 22 is removable when said screws 23 are removed. The strip 13 can be removed from said double glazing by removing said door 22. The strip 13 is removed so as not to damage the cavity 110 of the double glazing. In fact, the door 22 blocks an opening facing said strip 13 and said LED strips 15, 19. A sliding of said profile of the duct 12, when the door 22 is removed, is prevented by the presence of the cap 21 which is, at least partially, in contact with said profile of the duct 12. This means that the door 22 is made with dimensions such as to allow the extraction / reinsertion exclusively of said aluminum strip 13 and said LED strips 15, 19;

[0044] - at least a cover 14 which at least partially engages (therefore, it can partially or totally fill in different embodiments of the invention) said hollow portion 12' separating said LED strips 15, 19 from said cavity 110. Said cover 14 is a layer of polyurethane resin (as shown in FIG. 1) or a rigid or semi-rigid polyurethane profile (semi-rigid, in the case shown in FIG. 2). Said cover 14 is hermetically sealed in said hollow portion 12'. The insertion and hermetic sealing of the cover 14 occurs during assembly so as to close said hollow portion 12' above and create a hermetic seal for the cavity 110. Said cover 14 prevents the diffusion of the gases present in said cavity 110 into said hollow portion 12'. The cover 14 uniformly diffuses the light produced by said primary 15 and / or secondary LED strip 19. The cover 14 is in some embodiments of the present invention, such as that shown in FIG. 1, a layer of polyurethane resin, while in other embodiments of the present invention such as that shown in FIG. 2, it is a rigid or semi-rigid profile made of polyurethane (PU). Both described embodiments of the cover 14 hermetically insulate the profile of the duct 12 where the hollow portion 12' is obtained for the LEDs and for the aluminum strip 13; - at least two magnetic connectors 20, each placed at one end 12" of said profile of the duct 12. Said magnetic connectors 20 exchange current from a LED strip 15 on a first side of the double glazing to a LED strip 15 on a second side of the double glazing consecutive (with a common vertex) to the first side. Due to their magnetic properties, said magnetic connectors 20 facilitate the engagement and locking of said aluminum strip 13.

[0045] Said double glazing, in the embodiments defined as stand alone, further comprises at least a controller 200 which in turn comprises buttons, said buttons send signals to turn on, off and / or adjust the light intensity of the LED strips 15, 19 when pressed.

[0046] In FIG. 3, two double glazings with lighting system are installed close to each other inside a domestic environment. FIG. 4 illustrates the section of an embodiment of the invention with detail on one end 12", and on the related cap 21.

[0047] In various embodiments of the present invention, said LED strips 15, 19 are produced either with application on flexible or rigid PCBs, or with glass or optical fiber LED technology. In various embodiments of the present invention, said LED strips 15, 19 exploit CCT, RGB and / or RGBW technologies; the control of the various colors and intensities can be controlled by said motherboard, by said controller 200 (in the stand alone embodiments), by remote controls and / or by software applications installed on Personal Computers and / or on mobile devices.

[0048] In various embodiments of the present invention such as that shown in FIG. 3, the double glazing further comprises a removable additional LED strip 100; said additional LED strip 100 being reversibly constrained to the surface of said window frame 17 (when this is present) or to the external surfaces 10', 11' of said glass sheets 10, 11. The constraint is achieved, for example, by means of adhesive or mechanical fixing elements.

[0049] In various embodiments of the present invention, the double glazing further comprises at least a video camera 18 which engages said cavity 110 and is in contact with said profile of the duct 12. Said video camera 18 frames an environment inside and / or outside said glass sheets 10, 11. Said video camera 18 is connected to said motherboard and managed directly remotely by a user by means of an external device (such as a tablet, a smartphone, a computer). In various embodiments of the present invention such as that shown in FIG. 1 and 2, the double glazing comprises two video cameras 18. The video cameras 18, being connected to said motherboard, can be managed directly remotely by the customer by means of an external device, through which he / she will also be able to view the captured images.

[0050] In various embodiments of the present invention, the double glazing further comprises a brightness sensor in said cavity 110. Said brightness sensor is connected to the primary 15 and / or secondary LED strips 19. Said brightness sensor generates automatic on or off signals for the primary 15 and / or secondary LED strips 19 when the measured brightness is above or below threshold values. Where brightness “threshold values” are intended as values that are defined as factory values and / or appropriately programmed by means of, for example, a CPU which connects to the brightness sensor. Said brightness being preferably measured in lumens by said brightness sensor. Here, “generating signals” means that the synergy between the brightness sensor and electronic data processing equipment is such as to control the switching on and off of the LED strips 15, 19. It is believed that such electronic equipment and the relative electrical connections are a known practice for a person skilled in the art.

[0051] In various embodiments of the present invention, the double glazing comprises a temperature sensor in said cavity 110. Said temperature sensor is connected to said primary 15 and / or secondary LED strips 19. Said temperature sensor generates automatic turn-off signals for said primary 15 and / or secondary LED strips 19 or signals to prevent the turning on of said primary 15 and / or secondary LED strips 19 when the measured temperature is above or below threshold values. Where the maximum and minimum operating temperatures for LED strips 15, 19 can be taken as preferential temperature “threshold values”, in order to prevent them from being turned on or remaining turned on in temperature conditions that could compromise the operation thereof. Such a temperature sensor can also detect the temperature of the LED strips 15, 19 so as to turn them off in the event of overheating. Also in this case, “generating a signal” refers to the output of electronic data processing equipment that receives data from the temperature sensor and controls said LED strips 15, 19.

[0052] In various embodiments of the present invention said temperature sensor and / or said brightness sensor are at least partially immersed in said polyurethane resin cover 14; said polyurethane resin cover 14 at least partially constrains and hides said sensors during a solidification step.

[0053] In various embodiments of the present invention, the double glazing further comprises a curtain with a box installed inside the double glazing; said curtain assumes a retracted position in the box or a position extracted from the box and inside the cavity 110; said temperature sensor, said brightness sensor and said video camera 18 engage the inside of the box.

[0054] In various embodiments of the present invention, the double glazing further comprises a solar panel; said solar panel provides energy power supply to said battery in said stand-alone embodiments. Said solar panel engages a surface of a window frame 17, when present, and / or said external surfaces 10', 11'.

[0055] In various embodiments of the present invention, said cover 14 comprises darkening elements. Such darkening elements are, by way of non-limiting and non-binding example, black bands that are repeated at intervals or designs of various patterns preferably in black. Said darkening elements prevent the passage of the light emitted by said primary LED strip 15 and / or said secondary LED strip 19, obtaining light and shadow effects along the perimeter of the cavity 110.

[0056] In the embodiment shown in FIG. 3, there are four magnetic connectors 20 for each glass, each placed in a comer of the window (FIG. 3 specifically shows only two per glass while the other two are hidden from view) on the ends 12" of said profile of the duct 12 of each side of the double glazing. Not only do they allow the exchange of current, and therefore of power supply, from a primary LED strip 15 on one side to those of the consecutive sides 15' and 15" (i.e. sides with a common vertex / end 12"), but they also facilitate, due to their magnetic properties, the engagement and locking of said aluminum strip 13 when it is engaged.

[0057] FIG. 4 shows a detail of the ends 12" in section, with particular attention to the cap 21 already mentioned. On the cap 21, the door 22 is obtained, fixed to the profile of the duct 12 with screws 23: by removing the screws 23 it is possible to remove such a door 22, which allows the aluminum strip 13 to be removed, avoiding damaging the main chamber of the double glazing. It should be noted that the door 22 is designed so that it occupies a minimal required part of the cap 21, so that only the aluminum strip and the LED strips can be removed.

[0058] Finally, it is clear that modifications, additions or variations that are obvious to a person skilled in the art can be made to the invention described so far, without thereby departing from the scope of protection provided by the attached claims.

Claims

Claims1. Double glazing with lighting system, electrically powered, emitting light inside a cavity (110) of the double glazing unit and providing light inside and / or outside the room in which it is installed; said double glazing unit with lighting system comprising two or more glass sheets (10, 11) joined together, on each side, by means of a “U” shaped duct profile (12) and by means of sealing material (16); said sealing material (16) insulating a cavity (110) delimited by internal surfaces (10”, 11”) of the glass sheets (10, 11); said cavity (110) being filled with gas; said double glazing unit with lighting system comprising a motherboard, capable of connecting with wireless and / or Bluetooth technology to external devices; said double glazing with lighting system is characterized in that each said profile of the duct (12) has a hollow portion (12’) engaged by an aluminium strip (13) and by a cap (21); said strip (13) and said cap (21) being placed at least at one end (12”) of the profile of the duct (12); said double glazing with lighting system comprising, for each of its sides:- at least a primary LED strip (15), placed on said aluminium strip (13), suitable for emitting light; said primary LED strip (15) being directed towards said cavity (110) between said internal surfaces (10”, 11”); said primary LED strip (15), when turned on, producing perimeter lighting to the double glazing; said aluminium strip (13) being extractable by sliding and removing said one door (22) of said cap (21);- at least a secondary LED strip (19), placed on said strip (13) parallel to said primary LED strip (15); said secondary LED strip (19) being directed towards said cavity (110) between said internal surfaces (10”, 11”); said primary LED strip (15), when turned on, producing perimeter lighting to the double glazing; said LED strips (15, 19) having a common or separate and independent power supply;- said cap (21) comprising said door (22) fixed to said profile of the duct (12) by means of screws (23); said door (22) being removable when said screws (23) are removed; said strip (13) being removable from said double glazing by removing said door (22); said door (22) blocking an opening that overlooks said strip (13) and said LED strips (15, 19); a slipping of said profile of the duct (12), when the door (22) is removed, being prevented by the presence of the cap (21) which is, at least partially, in contact with said profile of the duct (12);- at least a cover (14) which at least partially engages said hollow portion (12’) separating said LED strips (15, 19) from said cavity (110) between said internalsurfaces (10”, 11”); said cover (14) being a layer of polyurethane resin or a rigid or semi-rigid polyurethane profile; said cover (14) engaging; said cover (14) being hermetically sealed in said hollow portion (12’); said cover (14) preventing the diffusion in said hollow portion (12’) of the gases present in said cavity (110); said cover (14) uniformly diffusing the light produced by said primary (15) and / or secondary (19) LED strip;- at least two magnetic connectors (20), each placed in said ends (12”) of said profile of the duct (12); said magnetic connectors (20) exchanging current from a LED strip (15) of a first side of the double glazing to a LED strip (15) of a second side of the double-glazing consecutive to the first side.

2. Double glazing with lighting system, according to the preceding claim 1, characterized in that it comprises window frames (17) placed on the perimeter of said glass sheets (10, 11); said glass sheets (10, 11) having the perimeter ending inside said window frames.

3. Double glazing with lighting system, according to any of the preceding claims, characterized in that it comprises at least a controller (200); said controller (200) comprising buttons; said buttons sending signals for switching on, off and / or regulating the light intensity of the LED strips (15, 19); said double glazing further comprising one or more batteries; said batteries supplying energy to said controller (200) and / or to said motherboard; said batteries supplying energy in the absence of electrical current.

4. Double glazing unit with lighting system, according to any of the preceding claims, characterized in that said LED strips (15, 19) are produced either with application on flexible or rigid PCBs, or with glass or optical fibre LED technology.

5. Double glazing unit with lighting system, according to any of the preceding claims, characterized in that said LED strips (15, 19) exploit CCT, RGB and / or RGBW technologies; the control of the various colours and intensities being controllable by said motherboard, by said controller (200) according to the preceding claim 3, by remote controls and / or by software applications installed on Personal Computers and / or on mobile devices.

6. Double glazing with lighting system, according to any of the preceding claims, characterized in that it further comprises an additional removable LED strip (100); said additional LED strip (100) being reversibly constrained on the surface of said window frame (17), according to the present claim 2, or on the external surfaces (10', 11') of said glass sheets (10, 11).

7. Double glazing with lighting system, according to any of the preceding claims, characterized in that it further comprises at least a video camera (18) which engages said cavity (110) and is in contact with said profile of the duct (12); said video camera (18) framing an internal and / or external environment to said glass sheets (10, 11); said video camera (18), being connected to said motherboard and managed remotely by a customer via an external device.

8. Double glazing with lighting system, according to any of the preceding claims, characterized in that it further comprises a brightness sensor in said cavity (110); said brightness sensor being connected to said primary (15) and / or secondary (19) LED strips; said brightness sensor generating automatic on or off signals for said primary (15) and / or secondary (19) LED strips when the measured brightness is above or below threshold values.

9. Double glazing with lighting system, according to any of the preceding claims, characterized in that it comprises a temperature sensor in said cavity (110); said temperature sensor being connected to said primary (15) and / or secondary (19) LED strips; said temperature sensor generating automatic off signals for said primary (15) and / or secondary (19) LED strips or preventing their switching on when the measured temperature is above or below threshold values.

10. Double glazing with lighting system, according to the preceding claims 1, 8 and 9, characterized in that said temperature sensor and / or said brightness sensor are at least partially immersed in said polyurethane resin cover (14); said polyurethane resin cover (14) binding and at least partially hiding said sensors during a solidification phase.

11. Double glazing with lighting system, according to the preceding claims 1, 7, 8 and 9, characterized in that it further comprises a curtain with a box installed inside the double glazing unit; said curtain assuming a position retracted in the box or a position extracted from the box and inside the cavity (110); said temperature sensor, said brightness sensor and said video camera (18) engaging the inside of the box.

12. Double glazing with lighting system, according to any of the preceding claims, characterized in that it further comprises a solar panel; said solar panel supplying energy to said batteries according to the previous claim 3; said solar panel engaging a surface of a window frame (17), according to the previous claim 2, and / or said external surfaces (10’, IL).

13. Double glazing with lighting system, according to any of the preceding claims,characterized in that said covering (14) comprises darkening elements; said darkening elements preventing the passage of the light emitted by said primary LED strip (15) and / or said secondary LED strip (19) obtaining light and shadow effects along the perimeter of the cavity (110).

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