This invention refers to a movement device for lighting sources.

In particular, it regards a motorised lighting device able to move either down or up depending on needs and is able to simplify and make interventions of maintenance and cleaning safe for the people involved.

As well known, the subject who has to carry out maintenance and/or substitution of the luminous body in lighting devices of priori art that they are attached to the ceiling or, more simply, clean the device, works at a certain height from the ground using a step ladder or an adjustable work platform in order to reach it.

This makes such interventions hazardous for the personal safety of anyone who has to work on the step ladder or on the platform without, for that matter, being able to hold on to the same since normally his/her hands are employed to carry out the above mentioned interventions on the lighting device. Furthermore, for what concerns interventions of maintenance and/or substitution of light bulbs, the intervention of a specialist workman equipped with suitable means to reach the luminous body is often required as they are often placed at a considerable height from the ground, which means intervention costs of a certain amount.

Devices for moving lights up and down exist with springs or pulleys which can be moved by hand but they mainly concern lights of small dimensions that are quite light and require minimal effort by the user, while lighting devices of large dimensions, for instance, those generally used in industrial warehouses, in offices or in factories are fixed to the ceiling, determining the inconveniences pointed out above. What is more, they normally use a 220V current thereby increasing the risks to personal safety for individuals during the phases of maintenance or cleaning.

The aim of this invention is that of remedying such inconveniences by supplying a low-voltage lighting device having the features of the attached claim 1.

The invention will be explained better through the following description, in which the preferable form of implementation of the invention is described, made with the aid of the attached figures that illustrate respectively:

Figure 1 illustrates the side view of the device according to this invention and a lighting source;

Figure 2 illustrates the movement components of the device according to this invention;

Figure 3 illustrates the side view of the internal mechanisms of the device according to this invention;

Figure 4 illustrates an enlarged view of the end-of-run sensor of the device according to this invention;

Figure 5 illustrates an enlarged view of the transmission component according to this invention.

With reference to the above mentioned figures, the movement device A, according to this invention, is linked to at least one lighting source I, by means of metallic bands 4 for support and movement which allow an up and down movement for said source. Inside the device A all the components are housed for the movement and the power supply to said light source. In particular, as indicated in Figure 1 , the device A is fitted on the ceiling with an anchoring bracket 1 , whether on the flat or sloping, of at least one housing 2, fitted with a cover plate 3, the aim of which is to protect the mechanisms contained in said device from dust and collisions.

The metallic band 4 is preferably of stainless steel and electrically and mechanically connects the device to at least one lighting source I.

This latter source is, preferably, a 48-VDC LED light, fitted with interchangeable lenses placed in front of each light, in such way as to vary, at the user's pleasure, the cone of light. Said LED light allows, as well known, a considerable saving of electrical power supply energy, less weight and smaller dimensions for the lighting body compared to traditional lights.

Inside the housing 2 (Fig. 2), rolling and unrolling means are envisaged for the metallic band 4 which connects this housing to the source. Furthermore, power supply means for the source are envisaged through the band 4. In particular, inside the housing there is a power supply unit 7 for the LED light and a power supply unit 71 for the gear motor 8. The power supply unit 7, besides transforming the input voltage of the 220V current, is also able to protect the LED light bulbs from voltage surges and increase the lifespan of the lights. The gear motor 8 allows movement in ascent or descent of the lighting source I by means of the band 4. Said gear motor is coupled with an internal worm screw 9 and a worm wheel 10, so as to maintain the lighting source I in a position of irreversible locking even in case of power failure. It is evident that the motor must be suitable with relation to the force necessary for the movement of the light and, therefore, the larger the light is, the more powerful the motor must be.

Furthermore, an electronic control board 1 1 is envisaged for the movement of the light through the use of a remote control, for instance with multi- frequency, which suitably regulates the phases of start and arrest so as to avoid sudden and, consequently, damaging movements of the light body. During the phases of movement the voltage is cut from the bands as a precaution thereby avoiding the occurrence of any possible malfunctions.

Inside the housing box winding coils 13 are inserted on which to wind the bands, fitted on an axis 14 preferably made of steel, of a non-conductive material, for instance plastic, so as to maintain insulation between the two bands. Blocking of the bands on the coil takes place by means of pin 15 and a safety screw 16. The coil furthest from the gear motor is not solidly joined to the other coil thereby allowing a fine regulation of the winding of the band onto its and perfect alignment of the light compared to a hypothetical horizontal plane.

In Figure 3, the path of the bands is illustrated along with the main components that come into contact with the same ensuring a correct power supply and positioning of the light.

Band 4, during movement, slides along a first upper metallic transmission 18 through which the power supply current of the light is transmitted, after that it passes into a lower transmission 19 on the body of the light and is then blocked at its end, on a blocking element 20 of the housing 2 (Fig. 3) where there is a second power supply point 21 . This to reduce to the minimum the electrical losses due to the resistance of the material.

When, by means of the gear motor, the band is wound and/or unwound, the lower transmission determines the raising or lowering of the lighting source in that the band can slide along it, while it is fixed to the blocking element 20 instead.

Inside the upper transmission 18 a spring sensor 22 is housed to verify contact between the band 4 and the transmission which allows blocking of the movement in case of meeting foreign bodies during the descent phase of the light. Should, instead, the light meet an obstacle in the ascent phase, it is blocked by a control board 1 1 which detects an anomalous absorption of current.

Finally, in order to prevent incorrect working conditions, a further sensor 23 is envisaged that, in case of reaching the lower limit of travel of the light (complete extension of the bands), signals the reaching of said limit and interrupts the rotation of the coil thereby avoiding the complete winding in the wrong sense of the band 4.

Lastly, the light is fed with a power supply and is able to project a beam of light in whatever position it is found and this is thanks to the bands 4. It is therefore possible to use the device regulating the lighting of the work area to one's own liking.