Illumination – Light source and modifier – Laser type
Patent
1993-08-26
1995-10-03
Husar, Stephen F.
Illumination
Light source and modifier
Laser type
362147, 362226, 362404, F21V 2114
Patent
active
054557542
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a device for supporting and powering with low voltage a Lighting installation equipped with one or more lamps, including: insulator extending along the middle plane of the rail, structure, bars of a rail, adjustable lengthwise on the rail and supporting a lamp, said device including two contact elements which are applied respectively against the conducting bars and which connect the lamp electrically to the rail. Low voltage lighting installations, usually 12 volt current, are used especially in commercial or artistic exhibitions and in living quarters, on account of their adaptability in providing well spread lighting or for spotlighting objects using several halogen lamps of the "spotlight" type. The lamps can be placed and moved easily, to put them in selected positions along two-pole conducting rails or pairs of cables serving the same purpose. Thanks to the low voltage, the conductors do not need any protective insulating sheath and can thus take connecting devices directly serving the dual function of supporting and powering the respective lamps.
One known type of rail is described in the application for European patent EP-291 989. It essentially requires an initial upside-down U section conducting bar provided with two outside lengthwise grooves, a second conducting bar located at the centre of the first one, an insulating support part set between the two bars, and an adapter for a low voltage light fixture so designed as to take hold on the two grooves. Such a device uses parts of complex shape, making them hard to machine and to install on the spot. Furthermore, the outer appearance of such a device is not eye-pleasing enough to suit the purpose of the lighting installations described above.
In such installations, another well known type of section rail, used in making up a support and two-pole power feed network for lamps, is made up of two round steel bars, laid side by side and bonded by an intermediary strip of synthetic dielectric material. Compared with a network of taut cables, this type of rail is advantageous on the score of rigidity, pleasing appearance, and ease in installing. On the other hand, it has certain disadvantages concerning devices for joining and branching off which have to be secured to the rails to connect them together or to the lamps. Each of these devices must individually surround a conducting bar, the circular section of which means that said devices must be secured either by clamping them tight and durably so, possibly leaving marks on the bars. Branching devices secured magnetically can be provided, but applying them to round bars does not allow adequate stability in positioning the lamps they support.
The purpose of the present invention is to perfect a device of this kind, avoiding the disadvantages indicated above and in particular providing great stability in rails and lamps, and also great ease in installing units, thanks to junction or suspension devices which are simple, sure, and of relatively few types. An additional purpose is to make it possible to give the parts of the device an outer shape which does not detract from the overall pleasing appearance of the lighting installation.
To this end, the invention concerns a supporting and powering device of the type indicated above, characterized in that each conducting bar of a rail has a cross section defining two opposing longitudinal grooves, respectively on opposite sides of the rail, in that said opposite sides of the rail extend appreciably in planes perpendicular to the middle plane of the rail, and in that the rail has a roughly polygonal section.
The fact that the conducting rail is provided with two opposing grooves makes it possible to secure the suspension means, the power feed, and means for joining two sections of rail and for securing the branching units to connect with the lamps in a positive and sure manner, thanks to appropriate parts fitting into these grooves. Furthermore, as the rail has at least two appreciably flat opposite sides, the above-mentioned means m
REFERENCES:
patent: 5203626 (1993-04-01), Clement
Applications Techniques et Decoratives de l'Eclairage SA
Husar Stephen F.
LandOfFree
Device for the support and power supply of very low voltage ligh does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for the support and power supply of very low voltage ligh, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for the support and power supply of very low voltage ligh will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1081477