WO2021084417A1 - Low voltage light chain for external use - Google Patents

Low voltage light chain for external use Download PDF

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Publication number
WO2021084417A1
WO2021084417A1 PCT/IB2020/060057 IB2020060057W WO2021084417A1 WO 2021084417 A1 WO2021084417 A1 WO 2021084417A1 IB 2020060057 W IB2020060057 W IB 2020060057W WO 2021084417 A1 WO2021084417 A1 WO 2021084417A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical
electrical cable
connection means
cable
sealed container
Prior art date
Application number
PCT/IB2020/060057
Other languages
French (fr)
Inventor
Guido PARENZAN
Original Assignee
NOVARINO, Luca
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NOVARINO, Luca filed Critical NOVARINO, Luca
Publication of WO2021084417A1 publication Critical patent/WO2021084417A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/006—Fastening of light sources or lamp holders of point-like light sources, e.g. incandescent or halogen lamps, with screw-threaded or bayonet base
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/10—Lighting devices or systems using a string or strip of light sources with light sources attached to loose electric cables, e.g. Christmas tree lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/002—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips making direct electrical contact, e.g. by piercing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
    • F21V23/002—Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/04—Provision of filling media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/18—Distribution boxes; Connection or junction boxes providing line outlets
    • H02G3/20—Ceiling roses or other lighting sets

Definitions

  • the present invention relates to a low voltage light chain for external use.
  • Light chains comprising a series of lights hung from cables are known.
  • Currently light chains for external use commonly have a protection rating of IP44, i.e. are only able to withstand water sprayed for short periods of time and must be removed in case of rain. Protection against weather conditions becomes extremely difficult when electrical cables with a fabric coating are used, as by nature they do not coact effectively with gaskets and are subject to phenomena of capillarity.
  • Existing light chains have a geometry defined by the manufacturer and, moreover, the lights are fixed in predetermined points and are not modular according to requirements. Besides, the coating of the electrical cable is made of elastomeric material. There is the need to provide a light chain with a geometry that can be easily configured, and with lamps that can be fixed and configured in a simple and safe manner based on lighting requirements.
  • the aforesaid low voltage light chain for external use comprises:
  • first electrical cable comprising an external sheathing that can be perforated and is electrically connected to an electrical power supply network
  • At least one hollow and sealed container body comprising at least two half shells that can be opened if necessary, filled with insulating gel
  • said at least one hollow and sealed container body envelops said first electrical cable, in that at least one corresponding portion of said first electrical cable and said connection means are housed in a sealed manner in said sealed container body, by means of said insulating gel which encloses them like a cast, in that said gel is configured to model its shape on said electrical cable and said electrical connection means in a reversible manner, in that said electrical connection means coact with said first electrical cable to form an electrical connection, by perforation of said sheathing, maintaining the electrical continuity of said first electrical cable, and in that the poles of said first electrical cable are parallel to each other.
  • said light chain is characterised in that said first electrical cable is an insulated two-pole electrical cable with a fabric coating.
  • said light chain is characterised in that said first electrical cable has a quadrangular section, or a circular section, or an elliptical section, in that said electrical connection means of said at least one hollow and sealed container body comprise a number of needles equal to that of said poles of said first electrical cable, in that said needles are configured to perforate said external sheathing of said first electrical cable to form an electrical connection mutually with each of said poles of said first electrical cable, and in that said electrical connection means comprise retention means configured to fix said needles to said first electrical cable.
  • the light chain is further characterised in that said at least one hollow and sealed container body comprises integrally an electrical and mechanical connection means of a light source.
  • Said light source is light bulb with a sleeve, either with a socket, for example of G9 type, or with a bayonet coupling.
  • a light bulb with a sleeve which may obviously have a socket coupling, for example of G9 type, or a bayonet coupling.
  • the light chain is characterised in that said electrical and mechanical connection means is configured as a sleeve connector and comprises a gasket partially covering said connector and an externally threaded outer sleeve to engage a corresponding ring nut configured to support a light shade.
  • the light chain is characterised in that it comprises at least a second electrical cable electrically connected to said needles and in that at least one portion of said at least a second electrical cable is housed in a sealed manner by means of said insulating gel which encloses it like a cast, in said at least one sealed container.
  • the light chain is characterised in that it comprises a second hollow body consisting of at least one part, configured to coact with said at least one sealed container overlapping it externally and configured to be fixed in a disconnectable manner on said at least one sealed container.
  • - Fig.l is a perspective view of the light chain, according to a first example of embodiment of the invention.
  • - Fig.2 is an axial sectional view of the light chain of Fig.l;
  • FIG. 3A, 3B, 3C are, respectively, axial sectional views of an outer sleeve, of a covering gasket and of a sleeve connector of the electrical and mechanical connection means of a light chain, according to a first example of embodiment of the invention
  • - Fig.4 is a perspective view of the light chain, according to a second example of embodiment of the invention.
  • - Fig.5 is an axial sectional view of the light chain of Fig.4;
  • - Fig.6 is an exploded perspective view of electrical connection means to said first electrical cable, according to the example of embodiment of the invention of Fig.4;
  • - Fig.7 is a sectional and elevational view wherein a hollow and sealed container body, of the light chain, is illustrated open according to a third example of embodiment of the invention.
  • - Fig.8 is a perspective view of electrical connection means to a first electrical cable, according to the example of embodiment of the invention of Fig.7.
  • the reference number 10 in Fig.l indicates a light chain wherein a first electrical cable A is two-pole and has a fabric coating.
  • Said cable A has a rectangular section and the two poles P are parallel to each other.
  • Said chain 10 comprises a hollow and sealed container body 11 made of moulded plastic material which externally envelops said first electrical cable A.
  • Said hollow and sealed container body 11 integrally comprises an electrical and mechanical connection means 14 of a light source, not illustrated.
  • said connection means is a sleeve connector 14, and comprises a gasket 14.2 made of rubber material partially covering it.
  • Said connector 14 comprises an externally threaded outer sleeve 14.3 to engage a corresponding ring nut configured to support a light shade.
  • Two metal needles 12.1 perforate said first electrical cable A to form an electrical connection mutually with each of the two poles P of said cable.
  • the needles 12.1 and said cable A are mutually fixed by retention means 12.2 configured as plastic screw jumper bar.
  • Said sealed container body 11 is filled with insulating gel G which is configured to model its shape on said first electrical cable A and said electrical connection means 12.1 in a reversible manner.
  • the reference number 20 in Fig.4 indicates a light chain wherein a first electrical cable A' is two-pole and has a fabric coating. It has a rectangular section and the two poles P' are parallel to each other.
  • a hollow and sealed container body 21 made of moulded plastic material envelops said first electrical cable A'.
  • Two metal needles 22.1 perforate said first electrical cable A' to form an electrical connection mutually with each of the two poles P' of said cable A' and are electrically connected to a second electrical cable 23.
  • the needles 22.1 are fixed by the retention means 22.2 configured as plastic screw jumper bar.
  • Said screw jumper bar 22.2 is fixed in a disconnectable manner by means of two screws on a terminal board 22.3. Said screws each engage a corresponding threaded seat of said terminal board 22.3.
  • Said sealed container body 21 is filled with insulating gel G' which is configured to model its shape on said first electrical cable A and said electrical connection means 22.1 in a reversible manner.
  • the reference number 30 in Fig.7 indicates a light chain wherein said first electrical cable A" is two-pole and has a fabric coating.
  • Said hollow and sealed container body integrally comprises an electrical and mechanical connection means 34 of a light source L.
  • said connection means is a sleeve connector 34 and comprises a gasket 34.2 made of rubber material partially covering it.
  • Two metal needles 32.1 perforate said first electrical cable A" to form an electrical connection mutually with each of the two poles P" of said cable.
  • the needles are fixed by the retention means 32.2 configured as plastic screw jumper bar.
  • Said screw jumper bar 32.2 is fixed in a disconnectable manner by means of two screws on a terminal board 32.3, integral with said electrical and mechanical connection means 34. Said screws each engage a corresponding threaded seat of said terminal board 32.3.
  • Said sealed container body is filled with insulating gel G" which is configured to model its shape on said first electrical cable A" and said electrical connection means 32.1 in a reversible manner.
  • a variant of the invention provides for a light chain in which said first electrical cable is three-pole.
  • Said electrical cable has an elliptical section and the three poles are parallel to one another.
  • a hollow and sealed container body made of moulded plastic material envelops said first electrical cable.
  • Three metal needles perforate said first electrical cable to form an electrical contact mutually with each of the three poles of said cable and are electrically connected to a second electrical cable.
  • the needles are fixed by retention means configured as a plastic screw jumper bar.
  • a further variant of the invention provides for a light chain wherein said first electrical cable is four-pole.
  • Said electrical cable has a circular section, the four poles contained therein are parallel to one another.
  • said first cable has a raised part on its external sheathing.
  • a hollow and sealed container body made of moulded plastic material has an indent that coacts with said raised part of said first electrical cable, enveloping it externally.
  • Four metal needles perforate said first electrical cable to form an electrical contact mutually with each of the four poles of said cable, and are electrically connected to a second electrical cable. The needles are fixed by the retention means configured as plastic screw jumper bar.
  • a further variant of the invention provides for a light chain wherein said first electrical cable is two-pole.
  • Said electrical cable has a rectangular section and the two poles are parallel to each other.
  • a hollow and sealed cross-shaped container body made of moulded plastic material envelops said first electrical cable and an area of a second and of a third electrical cable.
  • Two metal needles perforate said first electrical cable to form an electrical contact mutually with each of the two poles of said cable, and are electrically connected to said second electrical cable and said third electrical cable.
  • the needles are fixed by first retention means configured as plastic screw jumper bar.
  • Second retention means configured as screw jumper bar fix said second electrical cable to said cross-shaped container body.
  • Third retention means configured as screw jumper bar fix said third electrical cable to said cross-shaped container body.
  • a further variant of the invention provides for a light chain comprising a second hollow body consisting, for example, of two coupled symmetrical parts made of plastic material, configured to coact with said at least one sealed container overlapping it externally and configured to be snap fitted in a disconnectable manner on said at least one sealed container body.
  • This second hollow body has an aesthetical function and prevents photodegradation.
  • said sealed container body is filled with insulating gel which is configured to model its shape on said first electrical cable and said electrical connection means in a reversible manner, in particular according to a variant not illustrated, said insulating gel incorporates not only said electrical and mechanical connection means of the light source, but also a part of the light source proximal to said connection means.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Insulating Bodies (AREA)

Abstract

Low voltage light chain (10) for external use, comprising: - a first electrical cable (A) comprising an external sheathing; - a hollow and sealed container body (11) comprising two half-shells (11.1) that can be opened, filled with insulating gel (G); - electrical connection means (12.1) to said first cable (A), wherein said container body (11) envelops said first cable (A), and wherein one portion of said first cable (A) and said connection means (12.1) are housed in a sealed manner in said container body (11) by means of said gel (G) which encloses them like a cast, wherein said gel (G) is configured to model its shape on said first cable (A) and said connection means (12.1) in a reversible manner, and wherein said connection means (12.1) cooperate with said first cable (A) to form an electrical connection between said first cable (A) by perforation said sheathing.

Description

LOW VOLTAGE LIGHT CHAIN FOR EXTERNAL USE
The present invention relates to a low voltage light chain for external use. Light chains comprising a series of lights hung from cables are known. Currently light chains for external use commonly have a protection rating of IP44, i.e. are only able to withstand water sprayed for short periods of time and must be removed in case of rain. Protection against weather conditions becomes extremely difficult when electrical cables with a fabric coating are used, as by nature they do not coact effectively with gaskets and are subject to phenomena of capillarity.
Existing light chains have a geometry defined by the manufacturer and, moreover, the lights are fixed in predetermined points and are not modular according to requirements. Besides, the coating of the electrical cable is made of elastomeric material. There is the need to provide a light chain with a geometry that can be easily configured, and with lamps that can be fixed and configured in a simple and safe manner based on lighting requirements.
Besides, it is desirable not to have to remove the light chains due to bad weather. The document US5688138A discloses a low voltage light chain for external use having the features of the pre-characterising part of claim 1. In view of these objects, the present invention provides a low voltage light chain for external use, the essential feature of which is the subject- matter of claim 1. Further advantageous features of the invention are described in the dependent claims.
Features and advantages of the invention will be more apparent from the detailed description of examples of embodiment provided below, with reference to the accompanying drawings, which show important details for the invention, and from the claims. The features illustrated here are not necessarily drawn to scale and are represented so that the distinctive features according to the invention are clearly highlighted.
The various features can be produced individually or in any combination with one another, as variants of the invention.
The aforesaid low voltage light chain for external use comprises:
- a first electrical cable comprising an external sheathing that can be perforated and is electrically connected to an electrical power supply network;
- at least one hollow and sealed container body comprising at least two half shells that can be opened if necessary, filled with insulating gel;
- electrical connection means to said first electrical cable.
It is characterised in that said at least one hollow and sealed container body envelops said first electrical cable, in that at least one corresponding portion of said first electrical cable and said connection means are housed in a sealed manner in said sealed container body, by means of said insulating gel which encloses them like a cast, in that said gel is configured to model its shape on said electrical cable and said electrical connection means in a reversible manner, in that said electrical connection means coact with said first electrical cable to form an electrical connection, by perforation of said sheathing, maintaining the electrical continuity of said first electrical cable, and in that the poles of said first electrical cable are parallel to each other.
Moreover, said light chain is characterised in that said first electrical cable is an insulated two-pole electrical cable with a fabric coating.
Further, said light chain is characterised in that said first electrical cable has a quadrangular section, or a circular section, or an elliptical section, in that said electrical connection means of said at least one hollow and sealed container body comprise a number of needles equal to that of said poles of said first electrical cable, in that said needles are configured to perforate said external sheathing of said first electrical cable to form an electrical connection mutually with each of said poles of said first electrical cable, and in that said electrical connection means comprise retention means configured to fix said needles to said first electrical cable.
The light chain is further characterised in that said at least one hollow and sealed container body comprises integrally an electrical and mechanical connection means of a light source. Said light source is light bulb with a sleeve, either with a socket, for example of G9 type, or with a bayonet coupling. Hereinafter, for simplicity, reference will be made to a light bulb with a sleeve, which may obviously have a socket coupling, for example of G9 type, or a bayonet coupling.
Moreover, the light chain is characterised in that said electrical and mechanical connection means is configured as a sleeve connector and comprises a gasket partially covering said connector and an externally threaded outer sleeve to engage a corresponding ring nut configured to support a light shade.
Besides, the light chain is characterised in that it comprises at least a second electrical cable electrically connected to said needles and in that at least one portion of said at least a second electrical cable is housed in a sealed manner by means of said insulating gel which encloses it like a cast, in said at least one sealed container.
Moreover, the light chain is characterised in that it comprises a second hollow body consisting of at least one part, configured to coact with said at least one sealed container overlapping it externally and configured to be fixed in a disconnectable manner on said at least one sealed container.
In the drawing:
- Fig.l is a perspective view of the light chain, according to a first example of embodiment of the invention;
- Fig.2 is an axial sectional view of the light chain of Fig.l;
- Figs. 3A, 3B, 3C are, respectively, axial sectional views of an outer sleeve, of a covering gasket and of a sleeve connector of the electrical and mechanical connection means of a light chain, according to a first example of embodiment of the invention;
- Fig.4 is a perspective view of the light chain, according to a second example of embodiment of the invention;
- Fig.5 is an axial sectional view of the light chain of Fig.4;
- Fig.6 is an exploded perspective view of electrical connection means to said first electrical cable, according to the example of embodiment of the invention of Fig.4;
- Fig.7 is a sectional and elevational view wherein a hollow and sealed container body, of the light chain, is illustrated open according to a third example of embodiment of the invention;
- Fig.8 is a perspective view of electrical connection means to a first electrical cable, according to the example of embodiment of the invention of Fig.7.
FIRST EMBODIMENT
With reference to the drawing, the reference number 10 in Fig.l indicates a light chain wherein a first electrical cable A is two-pole and has a fabric coating. Said cable A has a rectangular section and the two poles P are parallel to each other. Said chain 10 comprises a hollow and sealed container body 11 made of moulded plastic material which externally envelops said first electrical cable A.
Said hollow and sealed container body 11 integrally comprises an electrical and mechanical connection means 14 of a light source, not illustrated. In the figure, said connection means is a sleeve connector 14, and comprises a gasket 14.2 made of rubber material partially covering it. Said connector 14 comprises an externally threaded outer sleeve 14.3 to engage a corresponding ring nut configured to support a light shade. Two metal needles 12.1 perforate said first electrical cable A to form an electrical connection mutually with each of the two poles P of said cable. The needles 12.1 and said cable A are mutually fixed by retention means 12.2 configured as plastic screw jumper bar. Said sealed container body 11 is filled with insulating gel G which is configured to model its shape on said first electrical cable A and said electrical connection means 12.1 in a reversible manner.
SECOND EMBODIMENT
With reference to the drawing, the reference number 20 in Fig.4 indicates a light chain wherein a first electrical cable A' is two-pole and has a fabric coating. It has a rectangular section and the two poles P' are parallel to each other. A hollow and sealed container body 21 made of moulded plastic material envelops said first electrical cable A'.
Two metal needles 22.1 perforate said first electrical cable A' to form an electrical connection mutually with each of the two poles P' of said cable A' and are electrically connected to a second electrical cable 23. The needles 22.1 are fixed by the retention means 22.2 configured as plastic screw jumper bar. Said screw jumper bar 22.2 is fixed in a disconnectable manner by means of two screws on a terminal board 22.3. Said screws each engage a corresponding threaded seat of said terminal board 22.3.
Said sealed container body 21 is filled with insulating gel G' which is configured to model its shape on said first electrical cable A and said electrical connection means 22.1 in a reversible manner.
THIRD EMBODIMENT
With reference to the drawing, the reference number 30 in Fig.7 indicates a light chain wherein said first electrical cable A" is two-pole and has a fabric coating.
Said hollow and sealed container body integrally comprises an electrical and mechanical connection means 34 of a light source L. In the figure, said connection means is a sleeve connector 34 and comprises a gasket 34.2 made of rubber material partially covering it.
Two metal needles 32.1 perforate said first electrical cable A" to form an electrical connection mutually with each of the two poles P" of said cable. The needles are fixed by the retention means 32.2 configured as plastic screw jumper bar. Said screw jumper bar 32.2 is fixed in a disconnectable manner by means of two screws on a terminal board 32.3, integral with said electrical and mechanical connection means 34. Said screws each engage a corresponding threaded seat of said terminal board 32.3.
Said sealed container body is filled with insulating gel G" which is configured to model its shape on said first electrical cable A" and said electrical connection means 32.1 in a reversible manner.
A variant of the invention, not illustrated, provides for a light chain in which said first electrical cable is three-pole. Said electrical cable has an elliptical section and the three poles are parallel to one another. A hollow and sealed container body made of moulded plastic material envelops said first electrical cable. Three metal needles perforate said first electrical cable to form an electrical contact mutually with each of the three poles of said cable and are electrically connected to a second electrical cable. The needles are fixed by retention means configured as a plastic screw jumper bar.
A further variant of the invention, not illustrated, provides for a light chain wherein said first electrical cable is four-pole. Said electrical cable has a circular section, the four poles contained therein are parallel to one another. Moreover, said first cable has a raised part on its external sheathing. A hollow and sealed container body made of moulded plastic material has an indent that coacts with said raised part of said first electrical cable, enveloping it externally. Four metal needles perforate said first electrical cable to form an electrical contact mutually with each of the four poles of said cable, and are electrically connected to a second electrical cable. The needles are fixed by the retention means configured as plastic screw jumper bar.
A further variant of the invention, not illustrated, provides for a light chain wherein said first electrical cable is two-pole. Said electrical cable has a rectangular section and the two poles are parallel to each other. A hollow and sealed cross-shaped container body made of moulded plastic material envelops said first electrical cable and an area of a second and of a third electrical cable. Two metal needles perforate said first electrical cable to form an electrical contact mutually with each of the two poles of said cable, and are electrically connected to said second electrical cable and said third electrical cable. The needles are fixed by first retention means configured as plastic screw jumper bar. Second retention means configured as screw jumper bar fix said second electrical cable to said cross-shaped container body. Third retention means configured as screw jumper bar fix said third electrical cable to said cross-shaped container body. A further variant of the invention, not illustrated, provides for a light chain comprising a second hollow body consisting, for example, of two coupled symmetrical parts made of plastic material, configured to coact with said at least one sealed container overlapping it externally and configured to be snap fitted in a disconnectable manner on said at least one sealed container body. This second hollow body has an aesthetical function and prevents photodegradation.
It can be noted that for improved weather resistance of the chain according to the invention, said sealed container body is filled with insulating gel which is configured to model its shape on said first electrical cable and said electrical connection means in a reversible manner, in particular according to a variant not illustrated, said insulating gel incorporates not only said electrical and mechanical connection means of the light source, but also a part of the light source proximal to said connection means. As can be seen from the foregoing, with the present invention it is possible to achieve the objects set forth in the introductory part of the present specification in a simple and effective manner.

Claims

1. Low voltage light chain (10, 20, 30) for external use, comprising:
- a first electrical cable (A, A', A") comprising an external sheathing that can be perforated and is electrically connected to an electrical power supply network;
- at least one hollow and sealed container body (11, 21) comprising at least two half-shells (11.1, 21.1, 31.1) that can be opened, filled with insulating gel (G, G', G"); - electrical connection means (12.1, 22.1, 32.1) to said first electrical cable (A, A', A"); characterised in that said at least one hollow and sealed container body (11, 21) envelops said first electrical cable (A, A', A"), by the fact that at least one corresponding portion of said first electrical cable (A, A', A") and said connection means (12.1, 22.1, 32.1) are housed in a sealed manner in said sealed container body (11, 21) by means of said insulating gel (G, G', G") which encloses them like a cast, by the fact that said gel is configured to model its shape on said first electrical wire (A, A', A") and said electrical connection means (12.1, 22.1, 32.1) in a reversible manner, by the fact that said electrical connection means (12.1, 22.1, 32.1) co-operate with said first electrical cable (A, A', A") to form an electrical connection between said first electrical cable (A, A', A") by perforation of said sheathing, maintaining the electrical continuity of said first electrical cable (A, A', A"), and by the fact that the poles (P, P', P") of said first electrical cable (A, A', A") are parallel to each other.
2. Light chain (10, 20, 30) according to claim 1, characterised in that said first electrical cable (A, A', A") is an insulated two-pole electrical cable with a fabric coating.
3. Light chain (10, 20, 30) according to claim 1 and/or 2, characterised in that said first electrical cable (A, A', A") has a quadrangular section, or a circular section, or an elliptical section, by the fact that said electrical connection means (12.1, 22.1, 32.1) of said at least one hollow and sealed container body (11, 21) comprise a number of needles (12.1) equal to that of said poles (P, P', P") in said first electrical cable (A, A', A"), by the fact that said needles (12.1, 22.1, 32.1) are configured to perforate said external sheathing of said first electrical cable (A, A', A") to form an electrical connection mutually with each of said poles (P, P', P") of said first electrical cable (A, A', A"), and by the fact that said electrical connection means (12.1, 22.1, 32.1) comprise retention means (12.2, 22.2, 32.2) configured to fix said needles (12.1, 22.1, 32.1) to said first electrical cable (A, A', A").
4. Chain (10) according to claim 3, characterised in that said at least one hollow and sealed body (11) integrally comprises an electrical and mechanical connection means (14) for a light source (L).
5. Chain (10) according to claim 4, in which said light source is a light bulb with a sleeve, either with socket, or with bayonet coupling, characterised in that said electrical and mechanical connection means (14) is configured as a sleeve connector (14.1), either for socket or for bayonet couplings, and comprises a gasket (14.2) partially coating said connector (14.1) and an externally threaded outer sleeve (14.3) to engage a corresponding ring nut configured to support a light shade.
6. Chain according to claim 4 and/or 5, characterised in that said insulating gel (G, G', G") in said hollow and sealed container body (11, 21), incorporates like a cast said electrical and mechanical connection means (14) of said light source (L) and a part of said light source (L) proximal to said electrical and mechanical connection means (14).
7. Chain (20) according to claim 3, characterised in that it comprises at least a second electrical cable (23) electrically connected to said needles (22.1), and by the fact that at least a portion of said at least a second electrical cable (23) is housed in a sealed manner by means of said insulating gel (G') which encloses it like a cast, in said at least one sealed container (21).
8. Chain according to one or more of the preceding claims, characterised in that it comprises a second hollow body consisting of at least one part, configured to co-operate with said at least one sealed container, overlapping it externally and configured to be fixed in a disconnectable manner on said at least one sealed container.
PCT/IB2020/060057 2019-10-28 2020-10-27 Low voltage light chain for external use WO2021084417A1 (en)

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IT102019000019828 2019-10-28
IT102019000019828A IT201900019828A1 (en) 2019-10-28 2019-10-28 LOW VOLTAGE OUTDOOR CATENARY LIGHT

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200018276A1 (en) * 2022-09-07 2024-03-07 Mosaic S P A LIGHTING DEVICE

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB119539A (en) * 1917-10-05 1918-10-07 Meyer Hart Goldstone Improvements in or relating to Incandescent Electric Lamp Holders.
GB2118380A (en) * 1982-04-14 1983-10-26 Vero Electronics Ltd An improved lampholder
US5688138A (en) * 1996-07-05 1997-11-18 King World Enterprise Co., Ltd. Water-proof lamp socket structure
US6648498B1 (en) * 2002-06-20 2003-11-18 Chia-Tsung Tsao Light string composed of light emitting diodes
KR101830353B1 (en) * 2016-09-08 2018-02-20 김건형 Electric lamp cable equipped with wire separation rod

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB119539A (en) * 1917-10-05 1918-10-07 Meyer Hart Goldstone Improvements in or relating to Incandescent Electric Lamp Holders.
GB2118380A (en) * 1982-04-14 1983-10-26 Vero Electronics Ltd An improved lampholder
US5688138A (en) * 1996-07-05 1997-11-18 King World Enterprise Co., Ltd. Water-proof lamp socket structure
US6648498B1 (en) * 2002-06-20 2003-11-18 Chia-Tsung Tsao Light string composed of light emitting diodes
KR101830353B1 (en) * 2016-09-08 2018-02-20 김건형 Electric lamp cable equipped with wire separation rod

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200018276A1 (en) * 2022-09-07 2024-03-07 Mosaic S P A LIGHTING DEVICE
EP4336676A1 (en) * 2022-09-07 2024-03-13 Mosaic S.p.A. Lighting apparatus

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