WO2018150408A1 - A lighting module, a lighting system and a method for assembling a lighting system - Google Patents

A lighting module, a lighting system and a method for assembling a lighting system Download PDF

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Publication number
WO2018150408A1
WO2018150408A1 PCT/IB2018/095001 IB2018095001W WO2018150408A1 WO 2018150408 A1 WO2018150408 A1 WO 2018150408A1 IB 2018095001 W IB2018095001 W IB 2018095001W WO 2018150408 A1 WO2018150408 A1 WO 2018150408A1
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WO
WIPO (PCT)
Prior art keywords
contact
conductive layer
pin contact
lighting
distal end
Prior art date
Application number
PCT/IB2018/095001
Other languages
French (fr)
Inventor
Alberto ZANOTTO
Simon BOBBO
Lorenzo Baldo
Roberto DIDONE'
Valerio MICHIELAN
Matteo CALDON
Original Assignee
Osram Gmbh
Osram S.P.A. - Societa' Riunite Osram Edison Clerici
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 Osram Gmbh, Osram S.P.A. - Societa' Riunite Osram Edison Clerici filed Critical Osram Gmbh
Priority to DE112018000813.4T priority Critical patent/DE112018000813B4/en
Priority to CN201880008959.6A priority patent/CN110234925B/en
Publication of WO2018150408A1 publication Critical patent/WO2018150408A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • 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
    • F21V19/0005—Fastening of light sources or lamp holders of sources having contact pins, wires or blades, e.g. pinch sealed lamp
    • 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
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/004—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by deformation of parts or snap action mountings, e.g. using clips
    • 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
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • a lighting module a lighting system and a method for assembling a lighting system
  • the present description relates to lighting devices .
  • One or more embodiments may refer to lighting devices employing electrically powered solid-state light radiation sources, e.g. LED sources.
  • one or more embodiments may concern a lighting module, a lighting system including at least one lighting module and a method for assembling a lighting system.
  • the use has spread of lighting systems including a plurality of lighting modules, which are connected with each other through an electrical connection member.
  • the electrical connection of the lighting modules is achieved via an electrical cable, or via a flexible, e.g. stripe-shaped, printed circuit .
  • the maximum pitch for positioning the modules is limited, because the maximum distance between two subsequent modules depends on the length of the cables or on the length of the printed circuit;
  • One or more embodiments aim at helping overcome the previously outlined drawbacks.
  • said object may be achieved thanks to a lighting module and a lighting system having the features set forth in the claims that follow.
  • One or more embodiments may also refer to a method for assembling a lighting system.
  • One or more embodiments may concern a lighting module including a base having a first face and a second face parallel to each other, one or more electrically powered light radiation sources fastened on the first face of the base, a first and a second electrical contact, electrically connected to the light radiation source and projecting from the second face of the base, wherein the first electrical contact may include an elastic laminar contact, wherein the second electrical contact may include a pin contact projecting from the base along a direction orthogonal to the second face, wherein the pin contact has a central core of electrically conductive material and an outer coating of electrically insulating material, and wherein the outer coating leaves a distal end of the pin contact exposed.
  • the lighting module may be fastened to a conductive support having a first conductive layer and a second conductive layer, which are separated from each other by an insulating layer, wherein the first electrical contact may be pressed and contacted against the first conductive layer, wherein the pin contact may extend through the conductive support and wherein the distal end of the pin contact may be electrically connected to the second conductive layer of the conductive support.
  • One or more embodiments may offer one or more advantages, such as:
  • the distance between the lighting module and the position of the lighting modules in the finished lighting systems are customizable by the end user;
  • the orientation of the lighting modules with respect to the support is customizable by the end user:
  • the lighting modules may be assembled on conventional printed circuit circuits, which the customer may buy according to need.
  • Figures 1 and 2 are perspective views from different angles of an embodiment of a lighting module
  • FIG. 3 is a perspective view of an embodiment of a pin contact, denoted by arrow III in Figure 1,
  • Figures 4-7 are schematic views showing the mounting sequence of an embodiment of a lighting module onto a drilled support
  • Figures 8-10 are schematic views showing the mounting sequence of another embodiment of a lighting module onto a drilled support
  • FIG. 11 is a view showing an embodiment for fastening a lighting module onto a support via a plug
  • FIG. 12 and 13 are schematic views showing the mounting sequence of an embodiment of a lighting module onto an undrilled support
  • FIG. 14 is a top view showing an embodiment of a cutting step of a conductive support for a lighting system
  • FIG. 15 is a perspective view showing an assembling step of lighting modules onto a cut conductive support
  • Figure 16 is an exploded perspective view showing a lighting system used for implementing a portion of an illuminated sign.
  • the lighting module 10 may include a base 12 having a first face 14 and a second face 16, parallel to each other.
  • the base 12 may be a Printed Circuit Board (PCB) .
  • One or more electrically powered light radiation sources 18 e.g. solid-state light radiation sources, such as LED sources
  • the lighting module 10 may include a first electrical contact and a second electrical contact, which are electrically connected to the light radiation source 18.
  • the first electrical contact may include an elastic laminar contact 20.
  • the elastic laminar contact 20 may project from the second face 16 of the base 12.
  • the elastic laminar contact may have a bent shape in the relaxed state, and may be adapted to elastically deform under a compression force orthogonal to the second face 16.
  • the second electrical contact may include a pin contact 22.
  • the pin contact 22 may protrude from the base 12 along a direction orthogonal to the second face 16.
  • the pin contact 22 may have a central core 24 of an electrically conductive material, and an outer coating 26 of an electrically insulating material.
  • the outer coating 26 may leave a distal end 28 of the pin contact 22 exposed.
  • the distal end 28 of the pin contact 22 may have a flat front surface, which may be flush with a distal edge of the outer coating 26 ( Figures 1-3) . In one or more embodiments, the distal end 28 of the pin contact 22 may be implemented as a conical head, protruding beyond the distal edge of the insulating coating 26 ( Figures 4-6, 8-10 and 12, 13) .
  • reference 32 denotes a lighting system including at least one lighting module 10, fastened onto a conductive support 34.
  • the conductive support 34 may include a first conductive layer 36, a second conductive layer 38 and an insulating layer 40, sandwiched between the first conductive layer 34 and the second conductive layer 38.
  • the pin contact 22 of a lighting module 10 extends through the conductive support 34.
  • the first contact 20 of the lighting module 10 contacts the first conductive layer 36, and the distal end 28 of the pin contact 22 is electrically connected to the second conductive layer 38.
  • the outer coating 24 of the pin contact 22 electrically insulates the central core 24 of the pin contact 22 from the first conductive layer 36 of the conductive support 34.
  • the conductive support is conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductively conductive support
  • the pin contact 22 of a lighting module 10 is inserted into a selected hole 42 of a predrilled conductive support 34 ( Figures 5-7, 9-11) .
  • the conductive support 34 may be not predrilled ( Figures 12, 13) .
  • the pin contact 22 is inserted through a not predrilled conductive support 34, and forms a through hole 42 during its insertion ( Figures 12, 13) .
  • the distal end 28 of the pin contact 22 may be connected to the second conductive layer 38 of the conductive support 34 via a fastening formation.
  • the fastening formation fastens the lighting module 10 to the conductive support 34 in a position wherein the first electrical contact 29 of the lighting module 10 is pressed against the first conductive layer 36 of the conductive support 34.
  • the fastening formation electrically connects the distal end 28 of the pin contact 22 to the second conductive layer 38 of the conductive support 34.
  • the fastening formation may include a granule of solder paste 44 that encompasses the distal end 28 of the pin contact 22 and adheres to the second conductive layer 38 of the conductive support 34.
  • the fastening formation may include elastic tabs 45 projecting from the distal end 28 of the pin contact 22.
  • the elastic tabs 45 may have, in the relaxed state, a larger diameter than the outer coating 26, and are adapted to elastically bend against the outer coating 26 during the insertion of the pin contact 22 into the hole 42 of the conductive support 34 ( Figure 9) .
  • the elastic tabs 45 may spread apart as shown in Figure 10, in order to form a stop which prevents extraction of the pin contact 22.
  • the elastic tabs 45 may also establish an electrical connection with the second conductive layer 38.
  • the fastening formation may include a plug 46 having a shank 48 and a head 50, wherein the shank 46 may be fixed within a hole of the central core 24 of the pin contact 22, and wherein the head 50 may fix the pin contact 22 to the conductive support 34.
  • the plug 46 may establish electrical contact between the pin contact 34 and the second conductive layer 38.
  • the conductive support 34 may be obtained by cutting a sheet 52.
  • the sheet 52 may be cut along the dotted line 54, so as to obtain an element having the shape of a letter K.
  • the lighting modules 10 may be fastened at selected locations on the conductive support 34.
  • the relative distances between the lighting modules 10 and the orientations of the single lighting modules 10 may be chosen arbitrarily.
  • connection between the lighting modules 10 and the conductive support 34 may be implemented directly by the customer in the final application. This offers the freedom to configure the lighting system as desired in terms of number, packing and orientation of the lighting modules 10.
  • the conductive support 34 may be a conventional two-layer printed circuit, and may be purchased directly by the customer and cut to length according to the shape and size of the lighting system to be obtained.
  • the holes 42 may be drilled directly by the customer according to the desired position of the lighting modules 10.
  • the lighting system 32 may be used in different applications for general illumination, for decorative purposes and also for signage applications.
  • the lighting system 32 may be employed for building a portion an illuminated sign 56, wherein the lighting system 32 may have the same shape of the corresponding portion of sign 56. This offers the possibility of optimizing the lighting system 32 as a function of the final application.
  • One or more embodiments may therefore concern a lighting device (e.g. 10) which may include:
  • a base e.g. 12 which may have a first face (e.g. 14) and a second face (e.g. 16),
  • one or more electrically powered light radiation sources (e.g. 18) which may be fastened on the first face (e.g. 14) of the base (e.g. 12), and
  • first and a second electrical contact e.g. 22
  • the light radiation source e.g. 18
  • the first electrical contact may include an elastic laminar contact (e.g. 20)
  • the second electrical contact may include a pin contact (e.g. 22) projecting from the base (e.g. 12), wherein the pin contact (e.g. 22) may have a central core (e.g. 24) of electrically conductive material and an outer coating (e.g. 26) of electrically insulating material, and wherein the outer coating (e.g. 26) may leave a distal end (e.g. 28) of the pin contact (e.g. 22) exposed.
  • One or more embodiments may concern a lighting module (e.g. 10) wherein the distal end (e.g. 28) of the pin contact (e.g. 22) has a flat front surface which may be flush with a distal edge of the outer coating (e.g. 26) .
  • One or more embodiments may concern a lighting module (e.g. 10) wherein the distal end (e.g. 28) of the pin contact (e.g. 22) may be shaped as a conical head protruding beyond the distal edge of the outer coating (e.g. 26) .
  • One or more embodiments may concern a lighting module (e.g. 10) wherein the distal end (e.g. 28) of the pin contact (e.g. 22) may be provided with elastic tabs (e.g. 45) .
  • One or more embodiments may concern a lighting device (e.g. 10) including a plug (e.g. 46) which may include a shank (e.g. 48) destined to be fixed in a hole of the central core (e.g. 24) of the pin contact (22) .
  • One or more embodiments may concern a lighting system including at least one lighting module (e.g. 10) fastened to a conductive support (e.g. 34), which may include a first conductive layer (e.g. 36), a second conductive layer (e.g. 38) and an insulating layer (e.g. 40), which may be sandwiched between the first conductive layer (e.g. 36) and the second conductive layer (e.g. 38 ) ,
  • the elastic laminar contact (e.g. 20) of the lighting module (e.g. 10) may be pressed against the first conductive layer (e.g. 36), wherein the pin contact (e.g. 22) of the lighting module (e.g. 10) may extend through the conductive support (e.g. 34), wherein the outer coating (e.g. 24) of the pin contact (e.g. 22) may electrically insulate the central core (e.g. 24) of the pin contact (e.g. 22) from the first conductive layer (e.g. 36) of the conductive support (e.g. 34), and wherein the distal end (e.g. 28) of the pin contact (e.g. 22) may be electrically connected to the second conductive layer (e.g. 38) .
  • One or more embodiments may concern a lighting system wherein the distal end (e.g. 28) of the pin contact (e.g. 22) may be connected to the second conductive layer (e.g. 38) of the conductive support (e.g. 34) by a fastening formation (e.g. 44, 45, 46) .
  • One or more embodiments may concern a lighting system wherein said fastening formation may electrically connect the distal end (e.g. 28) of the pin contact (e.g. 22) to the second conductive layer (e.g. 38) of the conductive support (e.g. 34) .
  • One or more embodiments may concern a lighting system wherein said fastening formation may include a granule of solder paste (e.g. 44) that encompasses the distal end (e.g. 28) of the pin contact (e.g. 22) and may adhere to the second conductive layer (e.g. 38) of the conductive support (e.g. 34) .
  • solder paste e.g. 44
  • One or more embodiments may concern a lighting system wherein said fastening formation may include elastic tabs (e.g. 45) which may project from the distal end (e.g. 28) of the contact pin (e.g. 22) and which may be set in contact with said second conductive layer (38) of the conductive support (34) .
  • elastic tabs e.g. 45
  • One or more embodiments may concern a lighting system wherein said fastening formation may include a plug (e.g. 46) which may have a shank (e.g. 48) and a head (e.g. 50), wherein the shank (e.g. 46) may be fixed within a hole of the central core (e.g. 24) of the contact pin (e.g. 34), and wherein the head (e.g. 50) may form a stop against the second conductive layer (e.g. 38) of the conductive support (e.g. 34) .
  • a plug e.g. 46
  • shank e.g. 48
  • a head e.g. 50
  • One or more embodiments may concern a lighting system wherein said conductive support (e.g. 34) may be predrilled with a plurality of through holes (e.g. 42) .
  • One or more embodiments may concern a lighting system wherein the pin contact (e.g. 22) may be inserted through a not predrilled conductive support (e.g. 34) and may form a through hole (e.g. 42) during its insertion.
  • the pin contact e.g. 22
  • a not predrilled conductive support e.g. 34
  • a through hole e.g. 42
  • One or more embodiments may concern a method for assembling a lighting system, which may include:
  • a lighting module which may include a base (e.g. 12) which may have a first face (e.g. 14) and a second face (e.g. 16), one or more electrically powered light radiation sources (18) which may fixed on the first face (e.g. 14) of the base (e.g. 12), and a first and a second electrical contact which may be electrically connected to the light radiation source (e.g. 18), wherein the first electrical contact may include an elastic laminar contact (e.g. 20), wherein the second electrical contact may include a pin contact (e.g. 22) projecting from the base (e.g. 12), wherein the pin contact (e.g. 22) may have a central core (e.g.
  • a conductive support (e.g. 34) which may include a first conductive layer (e.g. 36), a second conductive layer (e.g. 38) and an insulating layer (e.g. 40) sandwiched between the first conductive layer (e.g. 34) and the second conductive layer (e.g. 38) ,
  • the pin contact (e.g. 22) of the lighting module (e.g. 10) through the conductive support (e.g. 34) and arranging the elastic laminar contact (e.g. 20) of the lighting module (e.g. 10) in contact with the first conductive layer (e.g. 36), and
  • One or more embodiments may concern a method for assembling a lighting system, which may include fastening a plurality of lighting modules (e.g. 10) on said conductive support (e.g. 34) with relative distances between the lighting modules (e.g. 10) and orientations of the individual lighting modules (e.g. 10) chosen arbitrarily.

Abstract

A lighting module including: - a base (12) having a first face (14) and a second face (16), - one or more electrically powered light radiation sources (18) fixed on the first face (14) of the base ( 12 ), and - a first and a second electrical contact, electrically connected to the light radiation source (18) and projecting from the second face (16) of the base ( 12 ), - wherein the first electrical contact includes an elastic laminar contact (20), wherein the second electric contact includes a pin contact (22) projecting from the base (12), wherein the pin contact (22) has a central core (24) of electrically conductive material and an outer coating (26) of electrically insulating material, and wherein the outer coating (26) leaves a distal end (28) of the pin contact (22) exposed.

Description

"A lighting module, a lighting system and a method for assembling a lighting system"
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Technical Field
The present description relates to lighting devices .
One or more embodiments may refer to lighting devices employing electrically powered solid-state light radiation sources, e.g. LED sources.
More specifically, one or more embodiments may concern a lighting module, a lighting system including at least one lighting module and a method for assembling a lighting system.
Technological Background
In the lighting sector the use has spread of lighting systems including a plurality of lighting modules, which are connected with each other through an electrical connection member.
In most applications, the electrical connection of the lighting modules is achieved via an electrical cable, or via a flexible, e.g. stripe-shaped, printed circuit .
The electrical connection of the lighting modules via electrical wires or via printed circuits suffers from some drawbacks, such as e.g.:
- the maximum pitch for positioning the modules is limited, because the maximum distance between two subsequent modules depends on the length of the cables or on the length of the printed circuit;
- if the lighting modules are connected with each other via cables and if they are mounted close to each other, it is necessary to hide the cables in order to avoid shadowing;
- the soldered connection of the lighting modules to the cables or to the printed circuits involves a high complexity;
- the possible use on lighting modules of crimping connectors, enabling mounting the lighting modules onto the electrical wires at any desired position, involves high costs and long process times.
The market of lighting systems requires an ever- increasing flexibility of installation and the possibility of customizing the installation of the lighting modules in the final application, together with an easier implementation of the electrical connection between the various lighting modules.
Object and Summary
One or more embodiments aim at helping overcome the previously outlined drawbacks.
According to one or more embodiments, said object may be achieved thanks to a lighting module and a lighting system having the features set forth in the claims that follow. One or more embodiments may also refer to a method for assembling a lighting system.
The claims are an integral part of the technical teaching provided herein with reference to the embodiments .
One or more embodiments may concern a lighting module including a base having a first face and a second face parallel to each other, one or more electrically powered light radiation sources fastened on the first face of the base, a first and a second electrical contact, electrically connected to the light radiation source and projecting from the second face of the base, wherein the first electrical contact may include an elastic laminar contact, wherein the second electrical contact may include a pin contact projecting from the base along a direction orthogonal to the second face, wherein the pin contact has a central core of electrically conductive material and an outer coating of electrically insulating material, and wherein the outer coating leaves a distal end of the pin contact exposed.
In one or more embodiments, the lighting module may be fastened to a conductive support having a first conductive layer and a second conductive layer, which are separated from each other by an insulating layer, wherein the first electrical contact may be pressed and contacted against the first conductive layer, wherein the pin contact may extend through the conductive support and wherein the distal end of the pin contact may be electrically connected to the second conductive layer of the conductive support.
One or more embodiments may offer one or more advantages, such as:
- the distance between the lighting module and the position of the lighting modules in the finished lighting systems are customizable by the end user;
the orientation of the lighting modules with respect to the support is customizable by the end user:
- total absence of cables or wires;
no shadowing effect due to the presence of cables, connectors or other components for the electrical connection of the lighting modules;
- no soldering for connecting the lighting modules ;
the assembling process is simple, fast and cheap;
- the electrical connection is reliable;
- the lighting modules may be assembled on conventional printed circuit circuits, which the customer may buy according to need.
Brief Description of the Figures
One or more embodiments will now be described, by way of non-limiting example only, with reference to the annexed Figures, wherein:
Figures 1 and 2 are perspective views from different angles of an embodiment of a lighting module,
- Figure 3 is a perspective view of an embodiment of a pin contact, denoted by arrow III in Figure 1,
Figures 4-7 are schematic views showing the mounting sequence of an embodiment of a lighting module onto a drilled support,
Figures 8-10 are schematic views showing the mounting sequence of another embodiment of a lighting module onto a drilled support,
- Figure 11 is a view showing an embodiment for fastening a lighting module onto a support via a plug,
- Figures 12 and 13 are schematic views showing the mounting sequence of an embodiment of a lighting module onto an undrilled support,
- Figure 14 is a top view showing an embodiment of a cutting step of a conductive support for a lighting system,
- Figure 15 is a perspective view showing an assembling step of lighting modules onto a cut conductive support, and
Figure 16 is an exploded perspective view showing a lighting system used for implementing a portion of an illuminated sign.
It will be appreciated that, for clarity and simplicity of illustration, the various Figures may not be drawn to the same scale.
Detailed Description
In the following description, various specific details are given to provide a thorough understanding of various exemplary embodiments. The embodiments may be practiced without one or several specific details, or with other methods, components, materials, etc. In other instances, well-known structures, materials or operations are not shown or described in detail in order to avoid obscuring various aspects of the embodiments .
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the possible appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring exactly to the same embodiment. Furthermore, particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The headings provided herein are for convenience only, and therefore do not interpret the extent of protection or scope of the embodiments.
In Figures 1 and 2, reference 10 denotes a lighting module. In one or more embodiments, the lighting module 10 may include a base 12 having a first face 14 and a second face 16, parallel to each other. The base 12 may be a Printed Circuit Board (PCB) . One or more electrically powered light radiation sources 18 (e.g. solid-state light radiation sources, such as LED sources) may be fastened onto the first face 14 of the base 12.
In one or more embodiments, the lighting module 10 may include a first electrical contact and a second electrical contact, which are electrically connected to the light radiation source 18.
In one or more embodiments, the first electrical contact may include an elastic laminar contact 20. In one or more embodiments, the elastic laminar contact 20 may project from the second face 16 of the base 12. The elastic laminar contact may have a bent shape in the relaxed state, and may be adapted to elastically deform under a compression force orthogonal to the second face 16.
In one or more embodiments, the second electrical contact may include a pin contact 22. In one or more embodiments, the pin contact 22 may protrude from the base 12 along a direction orthogonal to the second face 16. Referring specifically to Figure 3, in one or more embodiments the pin contact 22 may have a central core 24 of an electrically conductive material, and an outer coating 26 of an electrically insulating material. In one or more embodiments, the outer coating 26 may leave a distal end 28 of the pin contact 22 exposed.
In one or more embodiments, the distal end 28 of the pin contact 22 may have a flat front surface, which may be flush with a distal edge of the outer coating 26 (Figures 1-3) . In one or more embodiments, the distal end 28 of the pin contact 22 may be implemented as a conical head, protruding beyond the distal edge of the insulating coating 26 (Figures 4-6, 8-10 and 12, 13) .
In Figures 5-7 and 9-16, reference 32 denotes a lighting system including at least one lighting module 10, fastened onto a conductive support 34. In one or more embodiments, the conductive support 34 may include a first conductive layer 36, a second conductive layer 38 and an insulating layer 40, sandwiched between the first conductive layer 34 and the second conductive layer 38.
In one or more embodiments, the pin contact 22 of a lighting module 10 extends through the conductive support 34. In one or more embodiments, the first contact 20 of the lighting module 10 contacts the first conductive layer 36, and the distal end 28 of the pin contact 22 is electrically connected to the second conductive layer 38. In one or more embodiments, the outer coating 24 of the pin contact 22 electrically insulates the central core 24 of the pin contact 22 from the first conductive layer 36 of the conductive support 34.
In one or more embodiments, the conductive support
34 may be predrilled with a plurality of through holes 42 (Figures 5-7 and 9-11) . In one or more embodiments, the pin contact 22 of a lighting module 10 is inserted into a selected hole 42 of a predrilled conductive support 34 (Figures 5-7, 9-11) .
In one or more embodiments, the conductive support 34 may be not predrilled (Figures 12, 13) . In one or more embodiments, the pin contact 22 is inserted through a not predrilled conductive support 34, and forms a through hole 42 during its insertion (Figures 12, 13) .
In one or more embodiments, the distal end 28 of the pin contact 22 may be connected to the second conductive layer 38 of the conductive support 34 via a fastening formation. In one or more embodiments, the fastening formation fastens the lighting module 10 to the conductive support 34 in a position wherein the first electrical contact 29 of the lighting module 10 is pressed against the first conductive layer 36 of the conductive support 34. In one or more embodiments, the fastening formation electrically connects the distal end 28 of the pin contact 22 to the second conductive layer 38 of the conductive support 34.
Referring to Figure 7, in one or more embodiments the fastening formation may include a granule of solder paste 44 that encompasses the distal end 28 of the pin contact 22 and adheres to the second conductive layer 38 of the conductive support 34.
Referring to Figures 8-10, in one or more embodiments the fastening formation may include elastic tabs 45 projecting from the distal end 28 of the pin contact 22. The elastic tabs 45 may have, in the relaxed state, a larger diameter than the outer coating 26, and are adapted to elastically bend against the outer coating 26 during the insertion of the pin contact 22 into the hole 42 of the conductive support 34 (Figure 9) . When the distal end 28 of the pin contact 22 exits hole 42, the elastic tabs 45 may spread apart as shown in Figure 10, in order to form a stop which prevents extraction of the pin contact 22. The elastic tabs 45 may also establish an electrical connection with the second conductive layer 38.
Referring to Figure 11, in one or more embodiments the fastening formation may include a plug 46 having a shank 48 and a head 50, wherein the shank 46 may be fixed within a hole of the central core 24 of the pin contact 22, and wherein the head 50 may fix the pin contact 22 to the conductive support 34. The plug 46 may establish electrical contact between the pin contact 34 and the second conductive layer 38.
With reference to Figure 14, in one or more embodiments the conductive support 34 may be obtained by cutting a sheet 52. In the shown example, the sheet 52 may be cut along the dotted line 54, so as to obtain an element having the shape of a letter K.
With reference to Figure 15, in one or more embodiments the lighting modules 10 may be fastened at selected locations on the conductive support 34. The relative distances between the lighting modules 10 and the orientations of the single lighting modules 10 may be chosen arbitrarily.
The connection between the lighting modules 10 and the conductive support 34 may be implemented directly by the customer in the final application. This offers the freedom to configure the lighting system as desired in terms of number, packing and orientation of the lighting modules 10.
This solution may therefore be adopted in order to achieve different shapes of lighting systems 34 by using the same basic components. The conductive support 34 may be a conventional two-layer printed circuit, and may be purchased directly by the customer and cut to length according to the shape and size of the lighting system to be obtained. The holes 42 may be drilled directly by the customer according to the desired position of the lighting modules 10.
The lighting system 32 may be used in different applications for general illumination, for decorative purposes and also for signage applications. In the example of Figure 16, the lighting system 32 may be employed for building a portion an illuminated sign 56, wherein the lighting system 32 may have the same shape of the corresponding portion of sign 56. This offers the possibility of optimizing the lighting system 32 as a function of the final application.
One or more embodiments may therefore concern a lighting device (e.g. 10) which may include:
- a base (e.g. 12) which may have a first face (e.g. 14) and a second face (e.g. 16),
- one or more electrically powered light radiation sources (e.g. 18) which may be fastened on the first face (e.g. 14) of the base (e.g. 12), and
- a first and a second electrical contact (e.g. 22), which may be electrically connected to the light radiation source (e.g. 18),
wherein the first electrical contact may include an elastic laminar contact (e.g. 20), wherein the second electrical contact may include a pin contact (e.g. 22) projecting from the base (e.g. 12), wherein the pin contact (e.g. 22) may have a central core (e.g. 24) of electrically conductive material and an outer coating (e.g. 26) of electrically insulating material, and wherein the outer coating (e.g. 26) may leave a distal end (e.g. 28) of the pin contact (e.g. 22) exposed.
One or more embodiments may concern a lighting module (e.g. 10) wherein the distal end (e.g. 28) of the pin contact (e.g. 22) has a flat front surface which may be flush with a distal edge of the outer coating (e.g. 26) .
One or more embodiments may concern a lighting module (e.g. 10) wherein the distal end (e.g. 28) of the pin contact (e.g. 22) may be shaped as a conical head protruding beyond the distal edge of the outer coating (e.g. 26) .
One or more embodiments may concern a lighting module (e.g. 10) wherein the distal end (e.g. 28) of the pin contact (e.g. 22) may be provided with elastic tabs (e.g. 45) .
One or more embodiments may concern a lighting device (e.g. 10) including a plug (e.g. 46) which may include a shank (e.g. 48) destined to be fixed in a hole of the central core (e.g. 24) of the pin contact (22) .
One or more embodiments may concern a lighting system including at least one lighting module (e.g. 10) fastened to a conductive support (e.g. 34), which may include a first conductive layer (e.g. 36), a second conductive layer (e.g. 38) and an insulating layer (e.g. 40), which may be sandwiched between the first conductive layer (e.g. 36) and the second conductive layer (e.g. 38 ) ,
wherein the elastic laminar contact (e.g. 20) of the lighting module (e.g. 10) may be pressed against the first conductive layer (e.g. 36), wherein the pin contact (e.g. 22) of the lighting module (e.g. 10) may extend through the conductive support (e.g. 34), wherein the outer coating (e.g. 24) of the pin contact (e.g. 22) may electrically insulate the central core (e.g. 24) of the pin contact (e.g. 22) from the first conductive layer (e.g. 36) of the conductive support (e.g. 34), and wherein the distal end (e.g. 28) of the pin contact (e.g. 22) may be electrically connected to the second conductive layer (e.g. 38) .
One or more embodiments may concern a lighting system wherein the distal end (e.g. 28) of the pin contact (e.g. 22) may be connected to the second conductive layer (e.g. 38) of the conductive support (e.g. 34) by a fastening formation (e.g. 44, 45, 46) .
One or more embodiments may concern a lighting system wherein said fastening formation may electrically connect the distal end (e.g. 28) of the pin contact (e.g. 22) to the second conductive layer (e.g. 38) of the conductive support (e.g. 34) .
One or more embodiments may concern a lighting system wherein said fastening formation may include a granule of solder paste (e.g. 44) that encompasses the distal end (e.g. 28) of the pin contact (e.g. 22) and may adhere to the second conductive layer (e.g. 38) of the conductive support (e.g. 34) .
One or more embodiments may concern a lighting system wherein said fastening formation may include elastic tabs (e.g. 45) which may project from the distal end (e.g. 28) of the contact pin (e.g. 22) and which may be set in contact with said second conductive layer (38) of the conductive support (34) .
One or more embodiments may concern a lighting system wherein said fastening formation may include a plug (e.g. 46) which may have a shank (e.g. 48) and a head (e.g. 50), wherein the shank (e.g. 46) may be fixed within a hole of the central core (e.g. 24) of the contact pin (e.g. 34), and wherein the head (e.g. 50) may form a stop against the second conductive layer (e.g. 38) of the conductive support (e.g. 34) .
One or more embodiments may concern a lighting system wherein said conductive support (e.g. 34) may be predrilled with a plurality of through holes (e.g. 42) .
One or more embodiments may concern a lighting system wherein the pin contact (e.g. 22) may be inserted through a not predrilled conductive support (e.g. 34) and may form a through hole (e.g. 42) during its insertion.
One or more embodiments may concern a method for assembling a lighting system, which may include:
- providing a lighting module which may include a base (e.g. 12) which may have a first face (e.g. 14) and a second face (e.g. 16), one or more electrically powered light radiation sources (18) which may fixed on the first face (e.g. 14) of the base (e.g. 12), and a first and a second electrical contact which may be electrically connected to the light radiation source (e.g. 18), wherein the first electrical contact may include an elastic laminar contact (e.g. 20), wherein the second electrical contact may include a pin contact (e.g. 22) projecting from the base (e.g. 12), wherein the pin contact (e.g. 22) may have a central core (e.g. 24) of electrically conductive material and an outer coating (e.g. 26) of electrically insulating material, and wherein the outer coating (e.g. 26) may leave a distal end (e.g. 28) of the pin contact (e.g. 22) exposed,
- providing a conductive support (e.g. 34) which may include a first conductive layer (e.g. 36), a second conductive layer (e.g. 38) and an insulating layer (e.g. 40) sandwiched between the first conductive layer (e.g. 34) and the second conductive layer (e.g. 38) ,
inserting the pin contact (e.g. 22) of the lighting module (e.g. 10) through the conductive support (e.g. 34) and arranging the elastic laminar contact (e.g. 20) of the lighting module (e.g. 10) in contact with the first conductive layer (e.g. 36), and
- fastening the distal end (e.g. 28) of the pin contact (e.g. 22) to the second conductive layer (e.g. 38) .
One or more embodiments may concern a method for assembling a lighting system, which may include fastening a plurality of lighting modules (e.g. 10) on said conductive support (e.g. 34) with relative distances between the lighting modules (e.g. 10) and orientations of the individual lighting modules (e.g. 10) chosen arbitrarily.
Without prejudice to the basic principles, the implementation details and the embodiments may vary, even appreciably, with respect to what has been described herein by way of non-limiting example only, without departing from the extent of protection.
The extent of protection is defined by the annexed claims .

Claims

1. A lighting module comprising:
a base (12) having a first face (14) and a second face (16),
- one or more electrically powered light radiation sources (18) fixed on the first face (14) of the base ( 12 ) , and
a first and a second electrical contact, electrically connected to the source of light radiation (18) and projecting from the second face (16) at the base ( 12 ) ,
wherein the first electrical contact (20) comprises an elastic laminar contact (20), wherein the second electric contact comprises a pin contact (22) projecting from the base (12), wherein the pin contact (22) has a central core (24) of electrically conductive material and an outer coating (26) of electrically insulating material, and wherein the outer coating (26) leaves a distal end (28) of the pin contact (22) exposed.
2 . The lighting module of claim 1, wherein the distal end (28) of the pin contact (22) has a flat front surface flush with a distal edge of the outer coating (26) .
3 . The lighting module of claim 1, wherein the distal end (28) of the pin contact (22) is shaped as a conical head protruding beyond the distal edge of the outer coating (26) .
4 . The lighting module of any one of the preceding claims, wherein the distal end (28) of the pin contact
(22) is provided with elastic wings (45) .
5. The lighting module of any one of the preceding claims, comprising a plug (46) having a shank (48) intended to be fixed in a hole of the central core (24) of said pin contact (22) .
6 . A lighting system comprising at least one lighting module (10) according to any one of the preceding claims fastened to a conductive support (34) comprising a first conductive layer (36), a second conductive layer (38) and an insulating layer (40) sandwiched between the first conductive layer (36) and the second conductive layer (38),
wherein the elastic laminar contact (20) of the lighting module (10) is in contact with the first conductive layer (36), wherein the pin contact (22) of the lighting module (10) extends through the conductive support (34), wherein the outer coating (24) of the pin contact (22) electrically insulates the central core (24) of the pin contact (22) from the first conductive layer (36) of the conductive support (34), and wherein the distal end (28) of the pin contact (22) is electrically connected to the second conductive layer (38) .
7 . The lighting system of claim 6, wherein the distal end (28) of the pin contact (22) is connected to the second conductive layer (38) of the conductive support (34) by a fastening formation (44, 45, 46) .
8. The lighting system of claim 7, wherein said fastening formation (44, 45, 46) electrically connects the distal end (28) of the pin contact (22) to the second conductive layer (38) of the conductive support (34) .
9. The lighting system of claim 7, wherein said fastening formation comprises a granule of solder paste (44) that encompasses the distal end (28) of the pin contact (22) and adheres to the second conductive layer (38) the conductive support (34) .
10. The lighting system of claim 7, wherein said fastening formation comprises elastic tabs (45) projecting from the distal end (28) of the contact pin (22) set in contact with said second conductive layer (38) of the conductive support (34) .
11. The lighting system of claim 7, wherein said fastening formation comprises a plug (46) having a shank (48) and a head (50), wherein the shank (46) is fixed within a hole of the central core (24) of the contact pin (22) and wherein the head (50) is in contact against the second conductive layer (38) of the conductive support (34) .
12. The lighting system of any of claims 6-11, wherein said conductive support (34) is predrilled with a plurality of through holes (42) .
13. The lighting system of any of claims 6-11, wherein the pin contact (22) is inserted through a not predrilled conductive support (34) and forms a through hole (42) during its insertion.
14. A method for assembling a lighting system, comprising :
- providing a lighting module (10) comprising a base (12) having a first face (14) and a second face
(16), one or more electrically powered light radiation sources (18) fixed on the first face (14) of the base (12), and a first and a second electrical contact electrically connected to the source of light radiation (18), wherein the first electric contact comprises an elastic laminar contact (20), wherein the second electrical contact comprises a pin contact (22) projecting from the base (12), wherein the pin contact (22) has a central core (24) of electrically conductive material and an outer coating (26) of electrically insulating material, and wherein the outer coating (26) leaves a distal end (28) of the pin contact (22) exposed,
- providing a conductive support (34) comprising a first conductive layer (36), a second conductive layer (38) and an insulating layer (40) sandwiched between the first conductive layer (34) and the second conductive layer (38),
- inserting the pin contact (22) of the lighting module (10) through the conductive support (34) and pressing the elastic laminar contact (20) of the lighting module (10) in contact with the first conductive layer (36), and
- fastening the distal end (28) of the pin contact (22) to the second conductive layer (38) .
15. The method of claim 14, comprising fastening a plurality of lighting modules (10) on said conductive support (32) with relative distances between the lighting modules (10) and orientations of the individual lighting modules (10) chosen arbitrarily.
PCT/IB2018/095001 2017-02-14 2018-02-06 A lighting module, a lighting system and a method for assembling a lighting system WO2018150408A1 (en)

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DE112018000813.4T DE112018000813B4 (en) 2017-02-14 2018-02-06 A LIGHTING MODULE, A LIGHTING SYSTEM AND A METHOD FOR ASSEMBLING A LIGHTING SYSTEM
CN201880008959.6A CN110234925B (en) 2017-02-14 2018-02-06 Lighting module, lighting system and method for assembling a lighting system

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DE112018000813B4 (en) 2024-03-28
CN110234925B (en) 2021-04-23
CN110234925A (en) 2019-09-13

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