EP3470731A1 - Leuchtszusatz, entsprechende leuchte und verfahren - Google Patents

Leuchtszusatz, entsprechende leuchte und verfahren Download PDF

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Publication number
EP3470731A1
EP3470731A1 EP18197497.3A EP18197497A EP3470731A1 EP 3470731 A1 EP3470731 A1 EP 3470731A1 EP 18197497 A EP18197497 A EP 18197497A EP 3470731 A1 EP3470731 A1 EP 3470731A1
Authority
EP
European Patent Office
Prior art keywords
accessory
light
lighting device
reflector
permeable portion
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.)
Pending
Application number
EP18197497.3A
Other languages
English (en)
French (fr)
Inventor
Mr. Alberto ZANOTTO
Mr. Lorenzo BALDO
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.)
Inventronics GmbH
Original Assignee
Osram GmbH
Osram SpA
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 SpA filed Critical Osram GmbH
Publication of EP3470731A1 publication Critical patent/EP3470731A1/de
Pending legal-status Critical Current

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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
    • 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
    • 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
    • F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • 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
    • F21V15/012—Housings with variable shape or dimensions, e.g. by means of elastically deformable materials or by movement of parts forming telescopic extensions of the housing body
    • 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

Definitions

  • the description refers to lighting devices.
  • One or more embodiments can be applied to lighting devices using electrically-powered light radiation sources, for example, solid-state light radiation sources such as LED sources.
  • electrically-powered light radiation sources for example, solid-state light radiation sources such as LED sources.
  • lighting devices are known in the form of linear modules comprising an elongated substrate (for example, a flexible strip-like substrate) along which light radiation sources are distributed lengthwise
  • the strip-like substrate can be produced with a structure substantially similar to that of a printed circuit board (PCB) with the possibility of embedding the assembly formed by the substrate and the light radiation sources in a flexible casing, for example, of polymeric material.
  • PCB printed circuit board
  • modules have intrinsic limitations regarding the possibility of bending due to the strip-like conformation of the substrate. These limitations may be undesirably reflected on the possibilities of use of the device, both regarding the assembly and the configuration of light radiation emission.
  • One or more embodiments intend to contribute to overcoming these limitations.
  • this object is achieved thanks to an accessory having the characteristics referred to in the following claims.
  • One or more embodiments may concern a lighting device using such an accessory, as well as a corresponding method.
  • the numerical reference 10 indicates - in its entirety - a lighting device of the type currently referred to as a flexible linear module (or, briefly, "flex").
  • Such a lighting device may comprise a so-called light engine comprising, in turn, an elongated substrate (e.g. strip-like) 12, substantially similar to a flexible Printed Circuit Board (PCB) on which light radiation sources are distributed lengthwise, with electrical power supply 14.
  • a so-called light engine comprising, in turn, an elongated substrate (e.g. strip-like) 12, substantially similar to a flexible Printed Circuit Board (PCB) on which light radiation sources are distributed lengthwise, with electrical power supply 14.
  • PCB Printed Circuit Board
  • These can be, for example, solid state light radiation sources such as LED sources.
  • the light engine 12, 14 can be inserted into a housing or casing 16 capable of presenting, for example, a channel-like transverse profile.
  • the inner space of the casing 16 may possibly receive a sealing or potting mass 18 in order to give the light engine characteristics of protection against external agents, for example, with a degree of protection IPx.
  • Lighting devices as described above are well known in the art, which makes it unnecessary to provide a more detailed description herein.
  • the device 10 (and the parts that compose it) can be seen as elements of indefinite length (shown here in cross-section), possibly susceptible to being cut to length according to the requirements of application and use.
  • Figure 1 exemplifies the possibility of arranging the light engine (substrate 12 and sources 14), so to speak, "horizontally" in the casing 16 (for example, resting on the bottom wall of the channel-shaped profile).
  • the device 10 lends itself to being folded (taking advantage of the flexibility characteristics of the component parts) in a "vertical" direction (see the double arrow indicated by B in Figure 1 ), or rather, in the same direction in which the light radiation of the sources 14 is emitted starting from the front surface (i.e. from the open side of the casing 16), as schematically indicated by the arrow L in Figure 1 .
  • Figure 1 refers, by way of example, to the use of front-emitting or top-emitting light radiation sources 14, or rather with the radiation emitted by the sources 14 which are located on the substrate 12 directed towards the front surface of the device 10.
  • Figure 2 exemplifies the possibility of arranging the light engine 12, 14 at one of the side walls of the casing 16, i.e. with the light engine arranged, so to speak, "vertically" with respect to the device 10.
  • the device 10 flexible in a direction transverse to the direction of emission of the light radiation (see also in this case the arrow indicated with L), as schematically represented by the double arrow B in Figure 2 .
  • Both Figures 1 and 2 refer to lighting devices 10 in which the casing 16 is easily flexible (for example, being made of polymeric material, for example, silicone material), so that the flexibility characteristics of the device 10 are substantially dictated by the flexibility characteristics of the strip-like substrate 12, which bends more easily - as can be appreciated in both Figures 1 and 2 - in a perpendicular direction with respect to its general extension plane.
  • the casing 16 is easily flexible (for example, being made of polymeric material, for example, silicone material)
  • solutions such as the one exemplified in Figure 2 may envisage that the sources 14 (for example, LEDs) are of the side-emitting type and not front-emitting or top-emitting.
  • the casing 16 for example, on the inner surface
  • light-reflective material for example, white silicone material
  • light-diffusive material for example, silicone with light-diffusion characteristics
  • This manner of proceeding may also possibly allow (by exploiting the reflection/diffusion of the light radiation in the inner volume of the casing 16) implementation of a solution, as exemplified in Figure 2 , by using front-emitting or top-emitting light radiation sources.
  • One or more embodiments are able to allow the use of a lighting device 10 of the type shown in Figure 1 (in which, by itself, the - main - flexibility direction B is parallel, or substantially parallel, to the main light emission direction L) achieving conditions of possible use substantially similar to those represented in Figure 2 , i.e. conditions in which the (main) flexibility direction B is oriented in a direction transverse to the (main) direction of light radiation emission L.
  • This can be done without using side-emitting light radiation sources 14 and/or without having to use potting masses 18 with diffusivity characteristics.
  • One or more embodiments can make it possible to achieve this result by using an accessory 100 which can be applied (e.g. fit) on a module 10 such as, for example, a module 10 (of the protected or unprotected type) as exemplified in Figure 1 , i.e. using standard front- or top-emitting light radiation sources, for example LEDs.
  • a module 10 such as, for example, a module 10 (of the protected or unprotected type) as exemplified in Figure 1 , i.e. using standard front- or top-emitting light radiation sources, for example LEDs.
  • the accessory 100 may comprise a body portion 102 which can be fitted (according to different methods, as discussed below) on the device 10, and comprising a (frontal) portion permeable to the light 102a (for example, a continuous or discontinuous window or a continuous or discontinuous transparent portion) and a screen 104 e.g. curved, which can act as a reflector in such a way that the light radiation, emitted from the module 10 in a front direction through the front surface of the casing 16 and the light-permeable portion 102a, is reflected (on the intrados surface 104a, e.g.
  • the light-permeable portion 102a has opposite sides 1201 and 1202 (see, for example, Figures 3 and 4 ) that extend along the elongated body 102 and the reflector screen 104 extends (distally, that is, projecting) starting from one of the opposite sides (for example, starting from the side 1201, in the examples presented here) of the light-permeable portion 102a.
  • the accessory 100 can be made, in one or more embodiments with body 102 and screen 104 made of a piece, e.g. of flexible material, for example, elastic (with the use of materials such as silicone materials, rubber, etc.) with the consequent possibility of following the bending movement imparted to the module 10.
  • body 102 and screen 104 made of a piece, e.g. of flexible material, for example, elastic (with the use of materials such as silicone materials, rubber, etc.) with the consequent possibility of following the bending movement imparted to the module 10.
  • the accessory 100 can be made (in its entirety, or limited to the screen 104, for example, at the surface 104a able to reflect the light) of material with light-reflective characteristics.
  • the accessory 100 can be made (in its entirety, or limited to a part of it, for example, the screen 104, for example, at the surface 104a able to reflect the light) with colored material and/or fluorescent characteristics.
  • This can be, for example, a material containing pigmented and/or fluorescent particles (e.g. coextruded particles).
  • the light reflection characteristics can be achieved - just to give some possible examples, without limiting intentions - with a strip of metal material, such as aluminum, applied to the reflective surface of the screen 104, with the application of a light-reflective coating layer (e.g. white paint) or with an aluminizing treatment.
  • a strip of metal material such as aluminum
  • a light-reflective coating layer e.g. white paint
  • the use of material with fluorescence characteristics facilitates the achievement of a gradual turnoff of the device, because, thanks to the presence of the fluorescent material, the device also emits light radiation for a (short) period of time after the light radiation sources 14 have been turned off.
  • the connotation of the element 100 as an accessory highlights the fact that it can be made, in one or more embodiments, as an element distinct from the module 10 (whatever the structure of the module itself, according to various possible known solutions, such as, for example, those shown in Figures 1 and 2 ) with subsequent coupling to the module 10, which can be implemented either at the manufacturing stage or with a coupling operation carried out at the moment of use, for example, by the end user, without special equipment being required for this purpose.
  • the sequence of the two parts a) and b) of Figure 5 exemplifies the possibility of inserting a module 10 inside the body 102 of an accessory 100, by a (relative) sliding movement in the longitudinal direction, as exemplified in part a) of Figure 5 .
  • Figure 6 exemplifies the possibility of creating the aforesaid coupling by exploiting the flexibility characteristics (of the body 102) of the accessory 100, which is able to be slightly spread apart at the light-permeable portion 102a, so as to allow the module 10 to be inserted (for example, according to snap-coupling) in such a way as to be able to achieve, in this case as well, a coupling condition (which can be seen in the portion b) of Figure 5 and the portion c) of Figure 6 ) in which the body part 102 of the accessory 100 surrounds the module 10 with the reflective screen 104 placed in front of the light-permeable portion 102a, so as to be able to produce the desired "side" reflection effect of the light radiation.
  • deformable (flexible) material for the accessory 10 such as silicone or rubber, facilitates the insertion of the module 10 inside the accessory 100, also being able to achieve a holding (elastic) force of the module 10 inside the accessory 100.
  • the coupling condition between the module 10 and accessory 100 can be reinforced, for example, by applying adhesive material (in the form of tape or glue) at facing portions of the module 10 and the accessory 100.
  • the accessory 100 (or even just the reflective screen 104, or even just the reflective surface 104a) with materials having different reflectivity and/or color characteristics, using, for example, materials with specular reflection or diffusive-type characteristics.
  • the screen 104 it is possible to adopt different configurations for the screen 104 compared to the general basin shape exemplified here, with a reflective surface with convexity directed towards the portion 102a, in order to give a G-shaped cross-sectional profile to the accessory 100.
  • multiple reflectors 104 (hence the phrase "at least one reflector", which appears in the claims), for example, by providing a double screen with reflectors 104 on both the sides 1201, 1202 of the portion 120a. In this way, it is possible to produce side radiation emissions directed in opposite directions, for example, crossing each other, possibly with a front or top emission component resulting from the combination of the two.
  • the accessory 100 can be coupled with a non-protected module 10 (i.e. of the type in which the light engine 12, 14 does not have a potting mass, such as that indicated by 18 in Figures 1 and 2 ), instead providing the application of such a mass 108 (for example, based on silicone, glue, polyurethane or other known potting materials) within the volume defined by the screen 104 with respect to the module 10, which is in the body part 102 of the accessory.
  • a non-protected module 10 i.e. of the type in which the light engine 12, 14 does not have a potting mass, such as that indicated by 18 in Figures 1 and 2
  • a mass 108 for example, based on silicone, glue, polyurethane or other known potting materials
  • the previous considerations relating to the possible use of colored material and/or fluorescent material can be applied to the accessory 100 in its entirety, limited to part of it, to the sealing mass 108.
  • Figures 9 and 10 also exemplify the fact that the body part 102 of the accessory 100 does not need to be channel-shaped, instead being able to present an open bottom wall or opening with formations 102a, which can create a mechanical coupling with the casing 16 of the module 10 (e.g. with a combination of ribs and grooves provided, respectively, on either side of the body part 102 of the accessory 100 and the casing 16 of the module 10).
  • the accessory 100 here exemplified as comprising a single material, may comprise several materials (for example, with different characteristics of light propagation/reflection/diffusion) .
  • the space indicated by 110 in Figure 10 is an example of the possible presence, once the accessory 100 (in any case produced and configured) is coupled with the module 10, of a space which can receive (possibly masking them with respect to the outside) elements such as connectors, wires, cables or electrically conductive tracks, which can facilitate the operation of the device 10.
  • this may be the case of a module 10 coupled with the casing 100, for example by gluing, for example, with silicone glue.
  • Figures 7 and 8 exemplify modes that can be used to assemble an assembly comprising the module 10 and the accessory 100 on a supporting structure (not shown in the figures).
  • Figure 7 illustrates the possibility of using a bi-adhesive tape 120 for fastening, applied for example, to the bottom wall of the body part 102 of the accessory 100.
  • Figure 8 instead, exemplifies the possibility of using fastening formations for this purpose, such as screws or pegs 140, which can extend through the aforesaid bottom wall or, more generally, through the wall of the accessory 100.
  • the accessory 100 may comprise, as seen, a flexible material which can be easily perforated by said fastening formations 140, even without the need to provide holes - designed for this purpose -beforehand.
  • fastening may include, for example, studs or clips, fastening rails, etc.
  • assembly modes as exemplified in Figures 7 and 8 are suitable to be implemented both with the module 10 (already) inserted in the accessory 100, and operating on the accessory 100 before placing it inside (for example, according to modalities exemplified in Figures 5 and 6 ) the module 10.
  • an accessory for lighting devices may comprise:
  • the body and the at least one reflector can be in one piece with each other.
  • the at least one reflector may comprise a reflective surface of the concave light with a concavity directed towards the light-permeable portion.
  • the light-permeable portion may have opposite sides (e.g. 1201, 1202) extending along the body, and at least one reflector may extend (e.g. protruding) from one (e.g. 1201) of opposite sides of the light-permeable portion.
  • the body can be channel-shaped, with the light-permeable portion at the open side of the channel shape.
  • the accessory may have a substantially G-shaped cross-sectional profile.
  • the body may have an open side opposite to the light-permeable portion.
  • the body may present formations (e.g. 102b) for mechanical coupling with the lighting device.
  • At least part of the accessory may comprise colored material and/or fluorescent material.
  • an assembly may comprise:
  • One or more embodiments may comprise a light-permeable sealing mass (e.g. 108) between the light-emitting surface of the lighting device and the reflective surface of the at least one reflector.
  • said sealing mass may comprise colored material and/or fluorescent material.
  • a method may comprise:

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP18197497.3A 2017-10-13 2018-09-28 Leuchtszusatz, entsprechende leuchte und verfahren Pending EP3470731A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000115838A IT201700115838A1 (it) 2017-10-13 2017-10-13 Accessorio per dispositivi di illuminazione, dispositivo di illuminazione e procedimento corrispondenti

Publications (1)

Publication Number Publication Date
EP3470731A1 true EP3470731A1 (de) 2019-04-17

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ID=61224324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18197497.3A Pending EP3470731A1 (de) 2017-10-13 2018-09-28 Leuchtszusatz, entsprechende leuchte und verfahren

Country Status (2)

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EP (1) EP3470731A1 (de)
IT (1) IT201700115838A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008014682A1 (fr) * 2006-07-24 2008-02-07 Zhifeng Yao Lampe néon tubulaire souple
US20160097516A1 (en) * 2014-10-06 2016-04-07 Display Technologies, Llc Product display members
US20160377783A1 (en) * 2015-06-26 2016-12-29 Panasonic Intellectual Property Management Co., Ltd. Optical fiber holding structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008014682A1 (fr) * 2006-07-24 2008-02-07 Zhifeng Yao Lampe néon tubulaire souple
US20160097516A1 (en) * 2014-10-06 2016-04-07 Display Technologies, Llc Product display members
US20160377783A1 (en) * 2015-06-26 2016-12-29 Panasonic Intellectual Property Management Co., Ltd. Optical fiber holding structure

Also Published As

Publication number Publication date
IT201700115838A1 (it) 2019-04-13

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