FR2525324A1

FR2525324A1 - Antitheft device for electric lamps uses in public places - uses wire cage fitted over bulb and attached by security screws of type requiring special tools

Info

Publication number: FR2525324A1
Application number: FR8206771A
Authority: FR
Inventors: Clement Prat
Original assignee: LUMINTER
Current assignee: LUMINTER
Priority date: 1982-04-20
Filing date: 1982-04-20
Publication date: 1983-10-21
Also published as: FR2525324B1

Abstract

The device is used to prevent theft of lamps used in public places, and comprises multiple rigid wires (24,26,28) welded together to form a cage enclosing the lamp bulb. The spaces between the wires are small enough to prevent unscrewing and removal of the bulb. In order to remove the bulb security screws (32) must be released. The cage is formed from two 'U' shaped wires (24,26) welded to circular arcs which link the two 'U' wires. The cage is fitted against the two walls (16,18) of the lamp fitting which is fastened to the support by screws and nuts (20) of the type requiring a special tool to manipulate both screw and nut.

Description

Dispositif anti-vol pour luminaires et lampes
électriques de locaux publics.Anti-theft device for luminaires and lamps
electrical of public premises.

La présent. invention concerne un dispositif destiné i protéger contre le vol les luminaires ou les lampes électriques de locaux publics, tels que cabines d'ascenseurs, cabines téléphoniques, bureaux, parties communes d'immeubles, etc... tout en permettant un accès normal auxdits luminaires et lampes pour leur entretien ou lur remplacement. The present. The invention relates to a device intended to protect against theft luminaires or electric lamps of public premises, such as elevator cabs, telephone booths, offices, common parts of buildings, etc. while allowing normal access to said luminaires. and lamps for their maintenance or replacement.

Le dispositif anti-vol selon l'invention se carac térise en ce qu'il comprend une pluralité de fils rigides soudés entre eux de manière i constituer une cage gril lagée conçue pour envelopper le luminaire ou la lampe, et dont les mailles sont auffisamrent petites pour interdire le démontage de ces derniers et leur retrait à travers la cage grillagée, celle-ci étant solidarisée du support du luminaire ou de la lampe, au moyen d'au moins une vis inviolable d'un type connu. The anti-theft device according to the invention is characterized in that it comprises a plurality of rigid wires welded together so as to constitute a wired grill cage designed to envelop the luminaire or the lamp, and whose meshes are also small. to prohibit the disassembly of the latter and their removal through the mesh cage, the latter being secured to the support of the luminaire or the lamp, by means of at least one tamper-proof screw of a known type.

On rappelle qu'une vis inviolable présente sur sa tOto plusieurs empreintes disposées au hasard de manière à ne pas offir de prise aux tournevis classiques. Les luminaires et lampes à protéger ne peuvent donc être démontées frauduleusement. Par contre, pour remplacer une lampe, il est possible de démonter la cage en desserrant les vis au moyen d'un outil conçu spécialement pour cela. It is recalled that a tamper-proof screw has on its tOto several imprints arranged at random so as not to offer a grip with conventional screwdrivers. The luminaires and lamps to be protected cannot therefore be dismantled fraudulently. On the other hand, to replace a lamp, it is possible to dismantle the cage by loosening the screws using a tool specially designed for this.

Selon un premier mode de réalisation de l'invention, particulièrement adapté à une lampe portée par un socle en L, la cage grillagée comprend au moins deux fils en U, soudés entre eux par le milieu de leur & e et une pluralité de fils en forme d'arc de cercle soudés sur les branches des l'ilS en U de manière que l'inter- valle compris entre deux branches consécutives soit ouvert, la cage étant appliquée contre les deux parois du socle respectivement par son extrémité ouverte et par les branches qui bordent ledit intervalle ouvert, et étant solidarisée dudit socle au moyen de vis inviolables vissées dans des plaquettes soudées sur lesdites branches, et dans un support de douille fixé sur le socle. According to a first embodiment of the invention, particularly suitable for a lamp carried by an L-shaped base, the wire cage comprises at least two U-shaped wires, welded together by the middle of their & e and a plurality of wires in shape of a circular arc welded on the branches of the ILS in a U so that the interval between two consecutive branches is open, the cage being applied against the two walls of the base respectively by its open end and by the branches which border said open gap, and being secured to said base by means of tamper-proof screws screwed into plates welded to said branches, and in a socket support fixed to the base.

Selon un second mode de réalisation de l'invention, convenant plus particulièrement aux lampes protégées par une gaine tubulaire métallique, la cage est constituée par un croisillon formé d'au moins deux fils rigides repliés on U et soudés par leur Smo et dont les branches sont reliées deux à deux par des pièces cintrées selon le rayon de la gaine tubulaire, lesdites branches du croisillon étant insérées entre la lampe et la gaine et étant solidarisées de cette dernière au moyen de vis inviolables se vissant dans la paroi de la gaine et des pièces cintrées. According to a second embodiment of the invention, more particularly suitable for lamps protected by a metal tubular sheath, the cage is constituted by a spider formed by at least two rigid wires folded over U and welded by their Smo and whose branches are connected two by two by pieces bent along the radius of the tubular sheath, said branches of the spider being inserted between the lamp and the sheath and being secured to the latter by means of tamper-proof screws which are screwed into the wall of the sheath and curved pieces.

Dans le cas d'une lampe non protégée par une gaine, la cage comprend deux coquilles en fil rigide, com- prenant chacune des premiers fils situés dans des plans axiaux de la lampe et de la douille et de seconds fils situés dans les plans transversaux de la lampe et de la douille et soudés aux premiers, les deux coquilles étant Jointives de manière à fermer une cage qui n- toure la lampe et la douille, et étant solidarisées entre elles au moyen d'un collier de serrage fermé par une vis inviolable et monté autour des fils entourant la douille. In the case of a lamp not protected by a sheath, the cage comprises two rigid wire shells, each comprising the first wires located in axial planes of the lamp and the socket and second wires located in the transverse planes of the lamp and the socket and welded to the first, the two shells being joined so as to close a cage which bypasses the lamp and the socket, and being secured to each other by means of a clamping collar closed by a screw tamper-evident and mounted around the wires surrounding the socket.

D'autres caractéristiques et avantages do l'inven- tion ressortiront de la description de plusieurs modes de réalisation de lwinvention donnée on regard du dessin annexé dans lequel:
La figure 1 est une vue en perspective d'un dispositif anti-vol selon un premier mode de réalisation, applicable plus particulibremont à une lampe montée sur un support on L;;
La figure 2 est une vue on coupe suivant la ligne
II-II de la figure 1
La figure 3 est une vue en coupe d'une lampe carénée munie d'un dispositif anti-vol selon un second mode de réalisation
La figure 4 est une vue en perspective du disposi ti anti-vol de la figure 3, et
La tigure 5 est une vue en perspective dune ampoule électrique protegée par un dispositif anti-vol seion un troisieme mode de réalisation.Other characteristics and advantages of the invention will emerge from the description of several embodiments of the invention given, looking at the appended drawing in which:
Figure 1 is a perspective view of an anti-theft device according to a first embodiment, applicable more particularly to a lamp mounted on a support on L ;;
Figure 2 is a view cut along the line
Figure II-II
Figure 3 is a sectional view of a faired lamp provided with an anti-theft device according to a second embodiment
FIG. 4 is a perspective view of the anti-theft device of FIG. 3, and
Figure 5 is a perspective view of a light bulb protected by an anti-theft device according to a third embodiment.

Avec rérérence aux figures 1 et 2, la lampe à protéger 10 et sa douille 12 sont montées sur un socle 14 en L comprenant une embase horizontale 16 et un dos vertical 18 destiné à entre fixé sur une paroi, tel qu'un mur, au moyen de vis passant à travers des trous 20. La douille 12 est logée à l'intérieur d'une enceinte délimitée par une paroi verticale 22 en U reposant sur l'embase 16 et soudée par ses extrémites sur le dos 18 du socle. With reference to Figures 1 and 2, the lamp to be protected 10 and its socket 12 are mounted on a L-shaped base 14 comprising a horizontal base 16 and a vertical back 18 intended to be fixed on a wall, such as a wall, at screw means passing through holes 20. The socket 12 is housed inside an enclosure delimited by a vertical wall 22 in U resting on the base 16 and welded by its ends on the back 18 of the base.

Le dispositif anti-vol utilisé est constitué par une cage cylindrique comprenant deux fils rigides 24, 26 en U, soudés entre eux par les milieux de leur âme, et sur les branches desquels sont soudés plusieurs fils 28 en forme d'arc de cercle. Ces derniers ont une amplitude angulaire telle quils embrassent les quatre branches des fils en U, en laissant ouvert un intervalle compris entre deux branches successives. Aux extrémités des deux branches qui bordent ledit intervalle ouvert sont soudes deux plaquettes 30 parallèles à l'axe de la cage et percées de trous pour le passage de vis. The anti-theft device used consists of a cylindrical cage comprising two rigid wires 24, 26 in a U shape, welded together by the centers of their core, and on the branches of which several wires 28 are welded in the form of a circular arc. The latter have an angular amplitude such that they embrace the four branches of the U-shaped wires, leaving an interval between two successive branches open. At the ends of the two branches which border said open gap are welded two plates 30 parallel to the axis of the cage and pierced with holes for the passage of screws.

Au montage, on dispose la cage autour de la lampe 10 en appliquant son extrémité ouverte sur l'embase 16 et sa face latérale ouverte sur le dos 18. Les plaquettes 30 viennent de ce tait se placer contre les faces externes de la paroi verticale 22. La cage est alors solidarisée du socle au moyen de vis inviolables 32 que l'on visse dans les plaquettes 30 et dans la paroi 22. Une rois la cage fixée, la lampe 10 ne peut pas titre démontée trauduleusement Par contre, dans le cas où l'on voudrait accéder à la lampe en vue de son entretien ou de son remplacement, on pourra utiliser une clé specialement conçue pour s'adapter sur ladite vis. During assembly, the cage is placed around the lamp 10 by applying its open end to the base 16 and its side face open to the back 18. The plates 30 are therefore placed against the external faces of the vertical wall 22 The cage is then secured to the base by means of tamper-proof screws 32 which are screwed into the plates 30 and into the wall 22. One kings, the cage fixed, the lamp 10 cannot be disassembled traudulously By cons, in the case where you would like to access the lamp for maintenance or replacement, you can use a key specially designed to fit on said screw.

En variante de cette reallsation, les fils 28 peuvent Store en forme de cercle complet. As a variant of this reallsation, the wires 28 can store in the form of a complete circle.

Le mode de réalisation de la cage des figures 3 et 4 est plus particulièrement applicable à une lampe 34, du type spot, montée à l'intérieur d'un carénage cy lindrique 36 en métal. La lampe est fixée sur un socle 38 qui obture une extrémité du carénage. The embodiment of the cage of Figures 3 and 4 is more particularly applicable to a lamp 34, of the spot type, mounted inside a cylindrical fairing 36 made of metal. The lamp is fixed to a base 38 which closes one end of the fairing.

Le dispositif anti-vol utilisé pour protéger une telle lampe est constitué par un croisillon formé de deux tils rigides 40, 42 en U, soudés par le milieu de leur gme et dont les extrémites de leurs branches sont reliées deux à deux par des pièces 44, 46, de préférence cintre os de façon à épouser la courbure du carénage. Lesdites pièces cintrées présentent, dans le prolongement des branches des fils 40, 42, des doigts 48,50 percés chacun d'un trou taraudé 52. The anti-theft device used to protect such a lamp is constituted by a spider formed by two rigid tils 40, 42 in U, welded by the middle of their gme and the ends of their branches of which are linked in pairs by pieces 44 , 46, preferably bone hanger so as to match the curvature of the fairing. Said curved parts have, in the extension of the branches of the wires 40, 42, fingers 48.50 each pierced with a tapped hole 52.

Au montage, les branches du croisillon ainsi que les pièces cintrées, sont insérées entre la lampe 34 et le carénage 36, les doigts 48, 50 des pièces cin- trées venant alors traverser des fentes 54 percées sur le socle 38. Le croisillon est alors immobilisé au moyen de vis inviolables 56 vissées de l'extérieur, dans la paroi du carénage et dans les doigts 48, 50 qui font saillie de l'autre côté-du socle 38. During assembly, the branches of the crosspiece as well as the curved parts are inserted between the lamp 34 and the fairing 36, the fingers 48, 50 of the curved pieces then coming through slots 54 drilled on the base 38. The crosspiece is then immobilized by means of tamper-proof screws 56 screwed from the outside, into the wall of the fairing and into the fingers 48, 50 which project from the other side of the base 38.

Il va de soi que le croisillon peut comporter plus de deux fils en U. D'autre part, les pièces 44, 46 peuvent avoir toute autre forme appropriée. Par exemple, elles peuvent Titre plates, ou encore, elles peuvent entre remplacées par des pièces individuelles soudées chacune à une seule branche. It goes without saying that the spider can have more than two U-shaped wires. On the other hand, the parts 44, 46 can have any other suitable shape. For example, they can Title flat, or they can be replaced by individual parts each welded to a single branch.

La lampe 60 à protéger de la figure 5 est montee dans une douille classique 62. Le dispositif anti-vol utilisé dans ce cas comprend deux coquilles 64, 66 en fil rigide comprenant chacune un premier fil 68g 70 entourant complètement la lampe et situé dans un plan axial de la lampe, un second fil 72; 74 entourant la lampe sur la moitié de sa périphérie et situé dans un plan axial perpendiculaire au précédent, l'ensemble de ces fils descendant le long de la douille 62, et plusieurs fils en forme de demi-cercles 76, 78; 80, 82; 84, 86 disposés dans des plans transversaux au niveau de la lampe et de la douille et soudés aux fils 66 et 68 de chaque coquille. The lamp 60 to be protected in FIG. 5 is mounted in a conventional socket 62. The anti-theft device used in this case comprises two shells 64, 66 made of rigid wire each comprising a first 68g wire 70 completely surrounding the lamp and located in a axial plane of the lamp, a second wire 72; 74 surrounding the lamp on half of its periphery and located in an axial plane perpendicular to the previous one, all of these wires descending along the socket 62, and several wires in the form of semicircles 76, 78; 80, 82; 84, 86 arranged in transverse planes at the level of the lamp and the socket and welded to the wires 66 and 68 of each shell.

En positi on montée, des coquilles sont en contact tout le long des fils 68,70. La solidarisation des coquilles entre elles et autour de la lampe est réalisée d'une part, au moyen de deux anneaux 88 que l'on fixe au moment du montage autour des fils 68, 70, par exemple au niveau où ils se croisent avec les fils 72, 74, et d'autre part, au moyen d'non collier de serrage clas sique 90 que l'on monte autour des extrémités des fils 68, 70, 72 et 74 qui longent la douille 62. Le collier est serré au moyen d'une vis inviolable 92, coinçant ainsi lesdites extrémités de fils sur la douille. Le dispositif anti-vol ne peut alors entre démonté. In mounted position, shells are in contact all along the wires 68.70. The shells are joined together and around the lamp on the one hand, by means of two rings 88 which are fixed at the time of mounting around the wires 68, 70, for example at the level where they intersect with the wires 72, 74, and on the other hand, by means of a conventional clamp 90 which is mounted around the ends of the wires 68, 70, 72 and 74 which run along the socket 62. The collar is tightened to the by means of a tamper-proof screw 92, thereby wedging said ends of wires on the sleeve. The anti-theft device cannot then be disassembled.

Claims

1.- Anti-traffic device for electric lamps of public locals, characterized in that it comprises a plurality of rigid wires (24, 26, 28) welded together so as to constitute a grid cage designed to wrap the luminaire or the lamp, and the meshes of which are small enough to prevent disassembly of the latter and their removal through the wire cage, the latter being secured to the support (14) of the luminaire or of the washing machine by means of at least one screw tamper-evident (32) of a known type.

2.- Anti-theft device according to Revenaication 1, particularly suitable for a lamp carried by a Lw support, characterized in that the wire cage comprises at least two U-shaped wires (24, 26), welded together by the middle of their Lie and a plurality of wires (28) in the form of an arc of a welded weld on the branches of the V-shaped wires so that lwint-r all- understood between two consecutive branches is opened, the cage being applied against the two walls (16, 18) of the base respectively by its open end and by the branches which border said open gap, and being secured to said base by means of tamper-proof screws (32) screwed into plates (30) welded on said branches, and in a socket support (22) fixed on the base.

3. Anti-theft device according to claim 1, for a lamp mounted on a flat base, characterized in that the wire cage comprises at least two U-shaped wires welded together by the middle of their soot and a plurality of shaped wires. full circle welded on the branches of 1ls in U, the cylindrical cage thus formed resting by its open end on the base and being secured to said base by means of tamper-proof screws screwed in welded plates to the branches of U-shaped til and in a support socket attached to the base.

4. Anti-theft device according to claim 1, particularly suitable for a lamp mounted in a metal tubular sheath, characterized in that the cage is constituted by a spider in the form of at least two rigid tils (40, 42) folded in U and souaes by their soot and whose branches are connected two by two by curved pieces (44, 46j according to the radius of the tubular sheath t36), said branches of the spider being inserted between the lamp and the sheath and being secured to this the latter by means of tamper-proof screws which are screwed into the wall of the sheath and of the bent parts.

5. Anti-theft device according to claim 1, characterized in that it comprises two shells (64, 66) in rigid wire, each comprising first wires (68; 70, 72, 74j located in axial planes of the lamp (60) and the socket (62) and second tils (76, 78; 80, 82; 84, 86) located in transverse planes of the lamp and the socket and welded to the first, the two shells being joined by so as to form a cage which surrounds the lamp (60) and the socket (62), and being secured to each other by means of a clamp (90) closed by a tamper-proof screw t92) and mounted around the rils surrounding the socket .