ITTV20100072A1 - ROTATION SYSTEM FOR LUMINOUS FLOW CONVEYOR WITH FEMALE SUPPORT ON ELECTRONIC BOARD. - Google Patents

Description

DESCRIPTION OF INDUSTRIAL INVENTION Title: system for modifying the inclination of the axis of the light beam produced by an LED.

On behalf: Menegon Sergio, Via Cordevole nr. 8, 31044, Montebelluna TV Designated inventor: Menegon Sergio

The present application relates to a system for modifying the inclination of the axis of the light beam produced by an LED according to multiple values and by means of suitable rotation of a luminous flux conveyor with an inclined axis around the axis of rotation of a support previously fixed on the electronic board and in correspondence with the axis of the LED.

Nowadays the problem is felt of being able to illuminate streets, parking lots, urban areas and also the interiors and exteriors of residential buildings, layprdtfciv; commercial, sporting, recreational, using LED systems in such a way that a3⁄4l · to have an illuminated surface as uniform as possible, with adequate luminous intensity and in compliance with regulations.

LED lighting, although it offers the possibility of an important containment in energy consumption and in the durability of the LEDs themselves, much higher than the other technologies of greater use on the market, on the other hand it presents a problem given by the geometric characteristics of the beam. luminous produced by that device.

In fact, the angle of emission of this light beam normally takes on very low values and this makes this type of light tending to a point light, otherwise known as a spot effect. This determines, for lighting devices equipped with LEDs only and without lenses or optics placed in front of the LED itself, the impossibility of illuminating sufficiently large surfaces in a homogeneous way.

To partially obviate this problem, it is known to use light flux conveyors, in transparent plastic material, preferentially in the shape of a truncated cone and with a geometric and optical axis coaxial to that of the LED itself or inclined by a certain angle with respect to to the axis of the aforementioned LED. With these flux conveyors, opening the light beam, an increase in the emission angle of the light produced by the LED is achieved, thus distributing the light over a larger surface.

However, these flow conveyors have a major limitation given by the fact that it is in any case impossible to adequately illuminate sufficiently extended and decentralized areas only by using such types of device; this however large may be the opening angle of the truncated cones that make up the geometry of the flow conveyors themselves. In fact, even by considerably increasing the cone opening angle, the light output on the ground that would be obtained by doing so would end up being very low especially at the edges of the illuminated parts and therefore further away from the light source. . This low brightness would then be completely insufficient and inadequate to allow the luminous device to comply with the requirements of the street and urban lighting regulations.

With these types of flux conveyors, as per known techniques, the luminous flux is deflected by a determined fixed and non-modifiable angle.

This characteristic leads to the need, during the design phase, to determine exactly and in a non-modifiable way the desired angles of deflection of the light in order to achieve adequate illumination of the target as required by the regulations. Since these flow conveyors with a fixed inclined axis are obtained mostly by injection molding, it is clear that for each mathematically determined inclination angle, it is necessary to create a specific flow conveyor with an inclined optical axis with a fixed optical value and therefore a specific injection mold or in any case suitable equipment.

It is therefore often forced to limit the number of molds and thus the number of types of flow conveyors to be produced, but in this way it is no longer possible to optimally illuminate and it is difficult to respect the reference values provided by the regulations in force. To remedy this, it would be necessary to be able to vary the aforementioned angle of inclination of the flow of light produced by the LED continuously according to multiple, almost infinite positions.

Otherwise, and to confirm the above, in order to have the many necessary inclinations of the luminous fluxes, it would be necessary to create a mold for each of the many inclinations identified, naturally with a great waste of money and time.

It should also be said that the known types of fixed vertical or inclined axis flux conveyors do not allow the carrying out of those small but very useful adjustments of the inclinations of the luminous fluxes produced by the various LEDs once these flux conveyors have been mounted on the electronic board. Since these are fixed-type inclined axis luminous flux conveyors, the same cannot in fact be modified to obtain those indispensable calibrations regarding the correct inclination of the luminous fluxes produced by the various LEDs mounted on the board.

Another big problem in LED lighting systems with known types of light flux conveyors is that the end user is not given the possibility to change the angle of the luminous flux to make it more suitable for their lighting needs. This is because all the systems mentioned and not part of this invention, after being mounted on the electronic board, do not allow any further modification of the inclination of the luminous axis of the light produced by ciasewv, LED. In this way any possibility is precluded to the end user cfc modifying the inclination of the axis of the light coming from each LED. There are also patents filed which deal with devices with LEDs but which fall outside the scope of the present invention and which therefore cannot be considered as prior art.

A case of this type is given by the patent nr EP 1 566 847 A1 of 24 August 2005 which is not relevant to the object of the present invention since the device indicated in this prior art consists of a female support fixed on the electronic board and of a lens fixed in turn on this support in correspondence with the LED. However, this lens, not having an inclined axis, does not change the inclination of the light beam produced by the LED but merely opens the cone of the light beam produced without changing its direction.

A further case of this type is given by patent no. US 2009/310356 A1 of 17 December 2009 which is not relevant to the object of the present invention since the indicated device is not able to modify the inclination of the light beam produced by the LED according to multiple values and by means of rotation of the flow conveyor with respect to the axis of a support fixed to the electronic board and coaxial to the axis of the LED. In the previously identified, the flow conveyor is mounted directly on the board, without any support that contains it and is fixed in a single position for each LED. In this realization? </> Fiiu] £ »; therefore it is impossible to modify the inclination of the beam axis lumìrtB ^ ò '. produced by the LED according to multiple values and by the manufacturer and the end user.

A further case of this type is given by patent no. US 2007/0058378 A1 of 15 March 2007 which is not relevant to the subject of the present invention since the indicated device does not allow the modification of the axis inclination of the light beam produced by the LED but only the fixing of the LED and of the various lenses on the electronic board and according to different manufacturing solutions. Different devices are then treated, including lenses but not light flux conveyors. A further case of this type is given by patent no. WO 2010/004503 A1 of 14 January 2010 which is not relevant to the object of the present invention since the indicated device is not able to modify the inclination of the axis of the light beam produced by the LED according to multiple values but only to fix an LED or a LED lens to an aluminum profile or other. We are not in the presence of an inclined axis of a flux conveyor that is rotated with respect to the axis of the LED and for this reason it is impossible, with this solution referred to in the previously identified, to make changes to the inclination of the axis of the light beam produced by the LED,

The main task of what forms the subject of the present application is therefore that of solving the technical problems highlighted, eliminating the drawbacks described above in the known techniques.

This important task is accomplished by a system for modifying the inclination of the axis of the light beam produced by urU ^ ED according to multiple values and by rotating a luminous flux convector with an inclined axis, with respect to the axis of a support fixed to the electronic board in correspondence with the LED and coaxial to the axis of the LED. An appropriate concave seat is obtained on this support with suitable fins arranged on the internal contour of the same, designed to allow the guided rotation of the luminous flux conveyor with an inclined optical axis, equipped in turn with corresponding counter-seats with function rotation guide.

.This system allows, thanks to the relative rotation of the luminous flux conveyor with an inclined axis with respect to the support base, to modify the inclination of the axis of the luminous flux conveyor after its assembly on the relative support base. This allows infinite inclinations to be attributed to the axis of the luminous flux conveyor with respect to the axis of the LED. This determines a consequent change in the direction of the light beam produced by the LED and thus it becomes possible to illuminate the required areas in an optimal and decentralized way with respect to the lighting device. It is also possible to impute infinitesimal variations in the angle of inclination of the luminous flux produced by each LED and thus create a precise and efficient lighting system.

In this way it is possible to illuminate, with an efficiency unknown to previous systems and according to known techniques, the areas off-center with respect to the luminous body, which otherwise would remain in shadow or with insufficient lighting.

In this way we have an effective system for complying with the requirements of the regulations in force on street lighting. The manufacturer can then adjust the inclination of the light streams produced by each LED after installing the conveyors on their respective supports positioned on the electronic board, for a correct and effective final calibration of the lighting system. For particular applications, it is also possible for the end user to change the angle of the luminous flux of each flux conveyor himself, thus allowing a high level of product customization.

The system of the present invention allows a significant reduction in production costs through the construction of a single type of base and a single type of flux conveyor capable of allowing the setting of many inclinations of the luminous flux axis, unlike of known systems where instead it is necessary to use a flow conveyor with a specific and fixed inclination for each of the LEDs used (with consequent construction of expensive equipment such as injection molds).

Obviously, the use of this invention also allows a shortening of production times, since the assembly and setting of the inclinations of the various luminous fluxes produced by each LED are considerably simpler.

The aforementioned task and purposes, and others that will appear more clearly later on, are achieved by using a rotation system consisting of a female or concave support base fixed to the electronic board in correspondence with the LED and on which they are previously made some fins with the function of guiding the rotation of a flow conveyor with an inclined axis with respect to the axis of the support and therefore of the LED.

The rotation of the light flux conveyor with an inclined axis recipe to the support fixed on the electronic board, allows to modify the inclination of the axis of the light produced by the LED system according to multiple values, unlike the systems referred to in the known techniques in which such values were fixed and non-modifiable.

Further characteristics and advantages of the invention with respect to what has been said previously, will become clearer in the detailed description of some particular but not exclusive embodiments, illustrated by way of non-limiting example, in the attached drawings.

The fìg. 1 shows, in a sectional view, the inclined axis flow conveyor A1 positioned inside its seat obtained in the support A2, in turn fixed on the electronic board B, in correspondence with the LED C. They are indicated with s-s lâ € ™ axis of the LED and with t-t the inclined axis of the flux conveyor which can therefore rotate around the aforementioned s-s axis of the LED. The flow conveyor is made up of a full or hollow cone with an opening angle gamma e and an inclined axis alpha. On the base adjacent to the electronic board some fins M have been obtained with counter-shaped fins obtained in the support and with a guide function during rotation.

Fig. 2 shows, in a plan view, the inclined axis flow conveyor in two different positions.

Fig. 3 illustrates this solution in a three-quarter view.

Fig. 4 shows, in a three-quarter view, this solution with the parts not visible in broken lines.

Fig. 5 shows, in a sectional view, the solution according to the present invention. The flow conveyor A1 can be made hollow edfìniaL if the internal walls of the cone will be reflective or it can be made solid and in this case it will be a flow conveyor made of transparent material.

Fig. 6 shows, in a plan view, the optic A1 rotated by three different angles in plan: 0 °, tetal and theta2, by way of example among the infinite possible rotations.

Fig. 7 shows, in a three-quarter view, what is described in the previous figure.

Fig. 8 illustrates, in a sectional view, an implementation solution similar to the previous one, but in which the movable optical part A1 has been emptied making this body hollow and where the internal surfaces are made reflective, in order to convey the luminous flux according to the inclined and rotated axis and without giving rise to dispersions of the same.

Fig. 9 illustrates, in a three-quarter view, this type of solution.

Fig. 10 shows, in a sectional view, a second solution inside the object of the present invention, in which the luminous flux conveyor is provided with a convex spherical or cylindrical surface which allows it to rotate around a corresponding home to an A2 support. In this way, the flow conveyor can rotate with respect to the seat A2 and therefore with respect to the LED of C. In this figure, the angle of this rotation has been indicated with alfal as an example within the infinite possible inclinations.

Fig. 11 illustrates, in a sectional view, the embodiment solution <rGur \ ^ rotated by an angle aliai with respect to the axis of the LED C. 'Xx <'> X Fig. 12 illustrates, in a plan view, the embodiment solution of the previous two figures in a plan view and with three different positions of the flow conveyor represented, by way of example within the infinite possibilities.

Fig. 13 is a three-quarter view of what is indicated in fig. 12.

Fig. 14 shows, in a sectional view, the solution of figs. 10, 11, 12 and 13 with flow conveyor consisting of a hollow body and with reflecting internal surfaces instead of full and transparent.

Fig. 15 illustrates a three-quarter view, the above solution.

Fig. 16 shows, in a sectional view, a further embodiment within the object of the present invention. The flow conveyor A1 rotates around a t-t axis and rests on an inclined plane with respect to the electronic board obtained on the base A2. On this inclined support base, interconnection fins along the circumference have also been obtained, suitable for allowing the guided rotation of the flow conveyor A1 on which counter-shaped guide fins have been obtained.

In fig. 16, the s-s axis of the LED and the t-t axis of the flux conveyor coincide and the luminous flux produced by the LED does not undergo any change in direction.

Fig. 17 shows, in a three-quarter view, what is indicated in fig. 16.

Fig. 18 illustrates, in an enlarged detail of the section, the system with fins for guiding the rotation of the flow conveyor A1 with respect to the base A2, both transparent. or cables with reflective internal surfaces

Fig. 19 illustrates, in a sectional view, the solution referred to in the previous point <1> with the luminous flux conveyor A1 rotated with respect to its base A2. In this case, the rotation of the luminous flux conveyor around the t-t axis made it possible to determine a variation of the t-t output inclination of the luminous flux from the LED by an angle beta. Fig. 20 indicates, in a three-quarter view, what is described above. Fig. 21 shows, in a sectional view, an embodiment solution similar to the previous one but where the luminous flux conveyor A1 and the base A2 have been emptied and the internal surfaces have been made reflective. In this figure, the luminous flux conveyor A1 is not rotated with respect to the base A2 and the luminous flux produced by the LED does not undergo deviations.

Fig. 22 illustrates, in a three-quarter view, this type of solution.

Fig. 23 shows, in a sectional view, what is indicated with figures 21 and 22 but, in this case, the luminous flux conveyor A1, following its rotation around the axis t-t. it is inclined by an alpha angle and this angle is therefore the deflection impressed on the light beam produced by LED C.

Fig. 24 illustrates this embodiment in a three-quarter view.

Obviously, the solutions described above can find other embodiments within the scope of the present invention.

It is possible, for example, as indicated in figs. 8 and 9, to realize the luminous flux conveyor A1 no longer as a full transparent prism but as a hollow prism and with reflecting internal surfaces. Also in this case the possibility of rotation of the luminous flux conveyor A1 with respect to the fixed transparent spherical support A2, allows the setting of infinite rotation positions and therefore of inclinations of the light beam.

It was thus found that the invention has achieved the intended aim and objects, having devised a system for modifying the inclination of the axis of the light beam produced by an LED by means of the rotation of a luminous flux conveyor capable of deflecting the optical axis of the light beam produced by the LED according to infinite inclinations and no longer according to only a fixed and non-modifiable angle, as with previous known techniques. In this way it was possible to better and optimally illuminate large and decentralized surfaces with respect to the luminous body. Multiple luminous flux conveyors are no longer necessary, each with its own unique angle of inclination of the optical axis but it is sufficient to use a single type of optical system consisting of a single type of support and a single type of luminous flux conveyor developed with the rotation system referred to in the present invention. Each of these optical systems, all identical to each other, will then be set an appropriate angle of inclination with respect to the N axis of the LED. In this way, a single optical system is created consisting of a single type of base and a single type of luminous flux conveyor in place of the many previously necessary. The number of molds required is thus drastically reduced with a consequent significant reduction in terms of costs and production times. Now it is also possible for both the manufacturer and the end user to make all the necessary corrections to the inclination of the axis of the luminous flux conveyor projected on the plan and therefore of the luminous flux output without having to change the same flow conveyor with a different one.

Naturally, the invention is susceptible of numerous modifications and variations, all of which fall within the scope of the same inventive concept.

Naturally, the materials as well as the dimensions making up the individual components of the invention may also be the most pertinent according to specific needs.

Claims (4)

CLAIMS 1) System for modifying the inclination of the axis of the light beam produced by an LED according to multiple values and by rotating a luminous flux conveyor with an inclined axis, with respect to the axis of a support fixed to the electronic board at the LED and coaxial to the axis of the LED itself and with a suitable concave seat obtained on the internal contour of the same with appropriate fins, designed to allow the guided rotation of the luminous flux conveyor with an inclined optical axis, equipped in turn of corresponding counter-seats with rotation guide function. 2) System for modifying the inclination of the axis of the light beam produced by an LED, by rotating a flux conveyor which is characterized by the fact that the guiding parts are spherical or cylindrical, male and convex surfaces on the luminous flux conveyor and spherical or cylindrical, female and concave on the support base. 3) System for modifying the inclination of the axis of the light beam produced by an LED, by rotating a flux conveyor, as per claims 1) and 2) which is characterized by the fact that the optic , Is made up of a hollow body with internal reflective surfaces or solid and transparent. 4) System for modifying the inclination of the axis of the light beam produced by an LED, by means of the rotation of a flux conveyor, as per claims 1), 2) and 3) which is characterized by the fact that this conveyor of flow is not inclined axis.