FR2677432A1 - FLEXIBLE BINDING LAMP ADAPTABLE TO SIGNALING LIGHTS, IN PARTICULAR. - Google Patents

Abstract

The invention is in the field of lighting and its object is a lamp. This lamp, of the type comprising a housing (4) intended to house a light source (18, 22, 24) connected to a base (10) intended to be connected to a socket (14), is mainly characterized in that the housing (4) and the light source it contains are connected to the base (10) by means of an electrically conductive flexible cord (12), so that the positioning of the light source relative to the socket can be freely determined, the connection zone between the flexible cord (14) and the base (10) being protected by an end piece (36) made of insulating material; incidentally, the box incorporates voltage conversion means. Application to road signs, in particular to crossroads lights.

Description

The invention is in the field of electric lighting and its purpose

  a lamp, especially intended for road signs, such

than traffic lights.

  Lamps are known comprising a light source, which may be formed of a filament bulb or a group of light-emitting diodes, said light source being able to be housed in a casing formed of a verrine and a skirt, the light source and the housing being secured at their base with a base,

  such as a screw cap or a bayonet cap, intended to

  string the lamp at the electrical source via

a socket.

  The intersection lights are currently and quite generally equipped with an electrical installation usable at medium voltage (220 V), and in particular are equipped with a corresponding light source, such as filament lamp, which have a

  lesser lifetime than light-emitting diodes

  or low-voltage filament bulbs, for example of the order of 10 V. We therefore seek to replace the 220 V bulbs with low-voltage bulbs or

  electroluminescent diodes, which leads to different

  ficulty as to the means of connection of this news

  light sources on existing electrical installations

  aunts: the diversity of the said electrical installations,

  and in particular light source connection devices

  with them, leads to difficulties in

  of the new light source which must be able to be positioned in a fairly precise manner, with respect to an optical block for example, whatever the position of the bushing previously determined by the conformation of the old 220 V bulb. The purpose of the The present invention is to propose a lamp whose position of the light source is not made dependent on the position of the socket and which comes to replace a set such as bulb, colored verrine, light reflection devices. According to the invention, a lamp

  of the kind comprising a housing formed of a green

  transparent, smooth or representative of the reliefs, and

  of a skirt and which can incorporate a reflector, said bo -

  tier being adapted to house a light source which may consist of a plurality of elements such as light-emitting diodes or filament bulbs, said light source being connected to a base intended to be connected to a socket for the supply of electricity of the light source is mainly characterized in that the housing and the light source it contains

  connected to the base by means of an electro-flexible

  driver, so that the positioning of the

  light source relative to the socket can be free-

  determined by the user according to the installation

lation.

  According to one embodiment, the light source is formed of a plurality of light-emitting diodes.

According to another form of embodiment

  the light source consists of at least one

  hen with filament Preferably, the light source is composed of several filament bulbs whose light beam axes converge substantially towards the center of the housing, reflector means being arranged on the path of the beams to send them back.

  through the verrine beyond the case.

  The light source being either at least one low-voltage filament bulb, such as V, or a plurality, and the electrical source being

  medium voltage (220 V), the housing incorporates

  advantageously means for converting said medium voltage

in said low voltage.

  The base is advantageously a base of the group of those comprising the screw caps

and the bayonet caps.

  Preferably, the zone of connection between the flexible cord and the base is protected by a tip of insulating material, of the type called "sheath" if the insulating material is flexible, enveloping said area

link.

  The present invention will be better understood and details thereof will appear

  to the description that will be made of a preferred form

  embodiment, in relation to the figures of the attached plate, in which: FIG. 1 is a diagrammatic side view of a lamp according to the invention, FIG. 2 is an end view of the same lamp, FIG. 3 is a side view of a lamp housing according to the invention, the source of which

  is composed of a plurality of filamentary bulbs

  4 is a side view of a lamp housing according to the invention, the source of which

  light is composed of a plurality of diodes

  luminescent. In FIG. 1, a lamp 2 according to the invention comprises a housing 4, formed of a verrine

  6 and a skirt 8, for housing a light source.

  This housing 4 and the light source that it contains are connected to a base 10 or 11 by means of a flexible cord 12 electrically conductive Thus, the connection of the lamp

  2 on an existing installation, and in particular the position

  of the light source with respect to a socket 14 or 15, can be obtained whatever the conformation

of said installation.

The pellet can be a nerve

  with screw or alternatively a base 11 with bayonet.

The casing 4 incorporates

  believes transformation means 16 of the medium voltage (220 V) low voltage (10 V), intended to transform the voltage of the electricity provided by the installation

  in voltage operable by the light source.

  The connection zone between the flexible cord 12 and the base 10 (or 11) is wrapped with a tip 36 of flexible insulating material, of the type called "sheath". In FIGS. 1 and 2, the light source is composed of four bulbs 18, 20, 22, 24 with a filament evenly distributed radially at the edge of the verrine 6, and arranged two to two facing each other. The axes 26 of the light beams converge substantially towards the center of the housing 4 reflector means 19,21,23,25 are arranged in the path of the light beams to return 27 through the verrine 6 beyond the housing

8.

Alternately to form

  of the light source described in the fi-

  1 and 2, the one described in Figures 3 and 4 is

  composed of a plurality of elements, ie diode electrodes

  troluminescent (FIG. 4), or ampoules 30 with filaments (FIG. 3), whose axes 31 and 33 of the light beams

  are substantially parallel to that of the verrine.

  Although preferred embodiments have been described and shown and power supply voltage values given, it should be understood that the scope of the present invention is not limited.

  these forms and values, but that it extends to all

  with the characteristics set out above.

Claims (7)

R E V E N D I C A T IO N S   1. Lamp (2) of the kind comprising a housing (4), formed of a verrine (6) and a skirt (8), and which can incorporate a reflector, said housing (4) being intended to house a light source which may consist of a plurality of elements such as light-emitting diodes or filament bulbs, said light source being connected to a base (10 or 11) intended to be connected to a socket (14 or), for the purpose of supply of electricity to the light source characterized in that the housing (4) and the light source it contains are connected to the base   (10 or 11) by means of a flexible cord (12) electro- driver, hence the position   of the light source in relation to the socket   (14 or 15) can be freely determined by the user.   depending on the installation; 2. Lamp according to claim 1, characterized in that the light source   is formed of a plurality of electro-magnetic diodes (28)   minescentes; 3. Lamp according to claim 1 characterized in that the light source is formed of at least one filament bulb (18,20, 22,24,30);   4. Lamp according to claim 3 characterized in that the light source is composed of several filament bulbs (18,20, 22,24) whose axes (26) of light beams are r 6 converging substantially towards the center of the housing ( 4) and in that reflector means (19, 21, 23, 25) are arranged in the path of the beams to return them through the canopy (6) beyond the housing (4); 5. Lamp according to claim 1, characterized in that the light source is at least one filament bulb (18,20,22,24,30) low voltage, and in that, the electrical source being medium voltage housing (4) incorporates means (16) for converting said medium voltage into said low voltage; 6. Lamp according to claim 1 characterized in that the base is a base of the group of those comprising the screw caps (10) and the bayonet caps (11); 7. Lamp according to claim 1 characterized in that the connection zone between the flexible cord (12) and the base (10 or 11) is protected by a tip (36) of insulating material wrapping said bonding zone.