EP3318798B1 - Embout pour dispositif d'éclairage, procede et dispositif correspondants - Google Patents

Embout pour dispositif d'éclairage, procede et dispositif correspondants Download PDF

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Publication number
EP3318798B1
EP3318798B1 EP17199255.5A EP17199255A EP3318798B1 EP 3318798 B1 EP3318798 B1 EP 3318798B1 EP 17199255 A EP17199255 A EP 17199255A EP 3318798 B1 EP3318798 B1 EP 3318798B1
Authority
EP
European Patent Office
Prior art keywords
cap
end cap
peripheral wall
module
adhesive material
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP17199255.5A
Other languages
German (de)
English (en)
Other versions
EP3318798A1 (fr
Inventor
Mr. Alberto ZANOTTO
Alessio Griffoni
Mr. Lorenzo BALDO
Mr. Luigi PEZZATO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Osram SpA
Original Assignee
Osram GmbH
Osram SpA
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Filing date
Publication date
Application filed by Osram GmbH, Osram SpA filed Critical Osram GmbH
Publication of EP3318798A1 publication Critical patent/EP3318798A1/fr
Application granted granted Critical
Publication of EP3318798B1 publication Critical patent/EP3318798B1/fr
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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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F21V15/015—Devices for covering joints between adjacent lighting devices; End coverings
    • 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
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • 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
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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

  • the description relates to lighting devices.
  • One or more embodiments may find application in lighting devices employing electrically-powered light radiation sources, e.g. solid-state light radiation sources such as LED sources.
  • electrically-powered light radiation sources e.g. solid-state light radiation sources such as LED sources.
  • One or more embodiments may find employment in lighting devices having a protection against the penetration of foreign agents.
  • SSL Solid-State Lighting
  • the length of such modules may be chosen according to the application and usage needs (i.e. that it may be "customized"), the possibility being given to cut a generally elongate module to length.
  • LED modules which may be used in a wide range of applications (e.g. outdoor applications, in swimming pools, garages, gas stations, in the automotive sector, etc.), so that the protection against the penetration of foreign agents (e.g. an IP grade protection) must be guaranteed also in product marking.
  • applications e.g. outdoor applications, in swimming pools, garages, gas stations, in the automotive sector, etc.
  • foreign agents e.g. an IP grade protection
  • LED modules which are linear, flexible and encapsulated (i.e. protected, e.g. with an IP grade protection) and which have fixed predetermined lengths.
  • Another solution may envisage providing the final customer with end caps (e.g. of a plastic material) which may be applied (e.g. via an adhesive such as glue) onto the ends of the linear, flexible and encapsulated module; this is possible even if the module has been cut, e.g., at a certain electrical unit of the module, by adhesively applying the end cap in the position where the module has been cut.
  • end caps e.g. of a plastic material
  • an adhesive such as glue
  • the invention relates to an end cap according to the preamble of claim 1, which is known, e.g. from EP 3 001 092 A1 .
  • Somewhat similar arrangements are disclosed, e.g., in WO 2016/012189 A1 or US 2014/0153231 A1 .
  • One or more embodiments aim at overcoming the previously outlined drawbacks.
  • said object may be achieved thanks to an end cap having the features set forth in claim 1 that follows.
  • One or more embodiments may also concern a corresponding method.
  • the invention is defined by the appended claims.
  • the embodiments not covered by claim 1 do not form part of the invention but represent background art that is useful for understanding the invention.
  • One or more embodiments may lead to the achievement of an IP grade protection while allowing the user to cut the module to a desired length.
  • reference M denotes a lighting device (module) of elongate shape (optionally ribbon-like and/or flexible) adapted to employ electrically-powered light radiation sources, such as e.g. solid-state light radiation sources, for example LED sources.
  • electrically-powered light radiation sources such as e.g. solid-state light radiation sources, for example LED sources.
  • Such modules may include e.g. a channel-shaped casing, wherein there is arranged a support substantially similar to a Printed Circuit Board (PCB) which hosts distributed light radiation sources, e.g. LED sources.
  • PCB Printed Circuit Board
  • a cover including e.g. a sealing or potting material, is adapted to provide module M as considered herein with the features of protection against the penetration of external agents (e.g. with IP protection grade).
  • a module such as module M may have a surface, e.g. a front surface, wherefrom light radiation is emitted.
  • Lighting devices modules of this kind are known in the art, which makes it unnecessary to provide a more detailed description herein.
  • a module M as shown herein may be considered as having an indefinite length, adapted to be cut to length according to the application and usage needs.
  • the cutting operation may originate end surfaces E (which normally extend in a transverse plane with respect to the lengthwise extension of the module) which may be exposed: in other words, cutting to length may remove the module protection features against the penetration of external agents (water, condensate, various particles) exactly at such end surface(s).
  • One or more embodiments may enable providing module M with a desired protection degree (e.g. IP grade protection) also at the end surfaces which are exposed due to the cutting operation.
  • a desired protection degree e.g. IP grade protection
  • one or more embodiments may envisage an end cap 10 adapted to be coupled to the end of a module such as module M.
  • a cap such as cap 10 may include a body adapted to be defined as a cup-like or vat-like body, which in the present case is exemplified as having a rectangular section, but which may have a section of any shape, e.g. of a shape complementary to the cross section of module M.
  • a cap 10 as exemplified in the Figures may therefore include:
  • body wall 12 of cap 10 may be applied against the end surface of module M, while peripheral wall 14 wraps around the end of module M.
  • cap 14 may include (e.g. moulded) plastic material.
  • the cup-like structure defined by the peripheral wall 14 wrapping around body wall 12 may contain a filling of adhesive material 18, adapted to be covered with a protection layer 20.
  • Layer 20 may optionally be provided with a pull-tab 20a, which enables the removal thereof in order to expose the adhesive material 18 (e.g. a glue or similar sealing material) located within the cup-like structure of cap 10.
  • adhesive material 18 e.g. a glue or similar sealing material
  • cap 10 may be applied onto the end of module M (as exemplified in Figure 1 and, in a magnified scale, in Figures 4 and 5 ).
  • the adhesive material 18 may adhere to the (exposed) end of the module, while also penetrating, thanks to a certain flowability of the adhesive material, into the gap between the end of module M and the peripheral wall 14 of cap 10 (see e.g. Figures 4 and 5 ), so as to create a coating which "encapsulates" end E of module M with a sealing (and therefore protective) action against external agents.
  • cap 10 e.g. peripheral wall 14
  • there may be coupled (optionally at the inner surface or face of peripheral wall 14) a (heat-)shrinkable sheath 22.
  • sheath 22 may be coupled to the peripheral wall 14 of cap 10 via an adhesive (glue) or other fixing means (e.g. heat sealing).
  • adhesive glue
  • other fixing means e.g. heat sealing
  • shrinkable sheath 22 may optionally be formed integrally with cap 10, or at least with the peripheral wall 14 thereof.
  • cap 10 may be vested onto an end E of module M (see for example Figures 8 and 9 ) with sheath 22 in a (thermally) unshrunk condition wrapping around the end portion of module M and extending for a certain length on the peripheral surface of module M itself.
  • sheath 22 may be shrunk (e.g. by applying heat), determining the contraction thereof and a consequent tight fit, therefore gripping and sealing (and thus protecting) end E of module M whereon cap 10 is applied.
  • One or more embodiments as exemplified herein may be applied to a cap 10 having a so to say twofold or two-faced structure, with a peripheral wall comprising portions extending in opposite directions sidewise of body wall 12, so as to enable arranging cap 10 sandwiched between two lighting modules M having mutually facing ends E.
  • One or more embodiments may therefore envisage an end cap (e.g. 10) for elongate lighting modules, for instance LED modules (e.g. M) having an exposed end (e.g. E), wherein the end cap comprises:
  • a shrinkable sheath (e.g. 22) adapted to be vested onto said end and to be sealingly shrunk onto said end.
  • said removable layer may be provided with a pull-tab (e.g. 20a).
  • said at least one peripheral wall may be dimensioned to form, around said end, a penetration gap for said adhesive material.
  • said shrinkable sheath may include a heat-shrinkable sheath.
  • a method of providing an end seal in at least one lighting module having an exposed end may include:
  • One or more embodiments may include shrinking, optionally heath-shrinking, said sheath vested onto said end.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (9)

  1. Un capuchon d'extrémité (10) pour des modules d'éclairage allongés (M) possédant une extrémité exposée (E), le capuchon d'extrémité (10) comprenant :
    - une paroi de corps (12) applicable contre ladite extrémité (E), et
    - au moins une paroi périphérique (14) destinée à entourer ladite extrémité (E), ladite au moins une paroi périphérique (14) s'étendant latéralement par rapport à ladite paroi de corps (12) pour former au moins une partie en forme de coupelle du capuchon (10), dans lequel
    - une garniture de matériau adhésif (18) est disposée dans ladite partie en forme de coupelle du capuchon (10) pour coupler de manière étanche ledit capuchon à ladite extrémité (E), caractérisé en ce que le capuchon d'extrémité (10) comprend une couche de protection amovible (20) de ladite garniture de matériau adhésif (18).
  2. Le capuchon d'extrémité (10) de la revendication 1, dans lequel ladite couche amovible (20) est munie d'une languette de tirage (20a).
  3. Le capuchon d'extrémité (10) de l'une des revendications précédentes, dans lequel ladite au moins une paroi périphérique (14) est dimensionnée pour former, autour de ladite extrémité (E), un intervalle de pénétration pour ledit matériau adhésif (18).
  4. Le capuchon d'extrémité (10) de l'une des revendications précédentes, dans lequel une gaine rétractable (22) est couplée à ladite au moins une paroi périphérique (14), afin d'entourer ladite extrémité (E) et se rétracter de manière étanche sur ladite extrémité (E).
  5. Le capuchon d'extrémité (10) de la revendication 4, dans lequel ladite gaine rétractable (22) comprend une gaine thermorétractable.
  6. Un procédé d'obtention d'une étanchéité d'extrémité dans au moins un module d'éclairage (M) présentant une extrémité exposée (E), le procédé comprenant :
    - l'obtention d'un capuchon d'extrémité (10) selon l'une des revendications 1 à 5,
    - le retrait de la couche de protection (20) de ladite garniture de matériau adhésif (18), et
    - le couplage dudit capuchon d'extrémité (10) à ladite extrémité (E), par application de ladite paroi de corps (12) contre ladite extrémité (E) et avec ladite au moins une paroi périphérique (14) s'étendant autour de ladite extrémité (E).
  7. Le procédé de la revendication 6, comprenant l'action de faire pénétrer ledit matériau adhésif (18) dans un intervalle entre ladite paroi périphérique (14) et ledit module (M).
  8. Le procédé de la revendication 6 ou de la revendication 7, comprenant :
    - l'obtention d'un capuchon d'extrémité (10) selon la revendication 4 ou la revendication 5, et
    - la rétraction de ladite gaine (22) enfilée sur ladite extrémité (E).
  9. Le procédé de la revendication 8, comprenant la thermorétraction de ladite gaine (22) enfilée sur ladite extrémité (E).
EP17199255.5A 2016-11-08 2017-10-30 Embout pour dispositif d'éclairage, procede et dispositif correspondants Active EP3318798B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT201600112123 2016-11-08

Publications (2)

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EP3318798A1 EP3318798A1 (fr) 2018-05-09
EP3318798B1 true EP3318798B1 (fr) 2019-04-24

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012222103B4 (de) * 2012-12-03 2024-01-11 Ledvance Gmbh Leuchtvorrichtung mit miteinander verbundenen teilen
DE102014214604A1 (de) * 2014-07-24 2016-01-28 Osram Gmbh Halbleiter-Lampe und Verfahren zu ihrer Herstellung
CN104832813B (zh) * 2014-09-28 2017-02-22 嘉兴山蒲照明电器有限公司 Led日光灯

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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