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EP2796781A2 - Streifenbeleuchtung - Google Patents

Streifenbeleuchtung Download PDF

Info

Publication number
EP2796781A2
EP2796781A2 EP20140175208 EP14175208A EP2796781A2 EP 2796781 A2 EP2796781 A2 EP 2796781A2 EP 20140175208 EP20140175208 EP 20140175208 EP 14175208 A EP14175208 A EP 14175208A EP 2796781 A2 EP2796781 A2 EP 2796781A2
Authority
EP
European Patent Office
Prior art keywords
housing
strip
rail
assembly according
strip lighting
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.)
Withdrawn
Application number
EP20140175208
Other languages
English (en)
French (fr)
Other versions
EP2796781A3 (de
Inventor
David Field Showers
James Berry Quantrell
Kenneth Robert Goddard
Malcolm Wesley Oldis
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.)
Signify North America Corp
Original Assignee
Philips Lumileds Lighing Co LLC
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
Priority claimed from AUPO8240A external-priority patent/AUPO824097A0/en
Priority claimed from AUPP2590A external-priority patent/AUPP259098A0/en
Priority claimed from AUPP3229A external-priority patent/AUPP322998A0/en
Application filed by Philips Lumileds Lighing Co LLC filed Critical Philips Lumileds Lighing Co LLC
Publication of EP2796781A2 publication Critical patent/EP2796781A2/de
Publication of EP2796781A3 publication Critical patent/EP2796781A3/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • 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
    • 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
    • F21S4/26—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 of rope form, e.g. LED lighting ropes, or of tubular form
    • 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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/032—Lighting devices intended for fixed installation of surface-mounted type the surface being a floor or like ground surface, e.g. pavement
    • 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
    • F21V21/005—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips for several lighting devices in an end-to-end arrangement, i.e. light tracks
    • 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
    • F21V21/08—Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
    • F21V21/088—Clips; Clamps
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
    • H01R25/161—Details
    • H01R25/162—Electrical connections between or with rails or bus-bars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • 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
    • F21V15/013—Housings, e.g. material or assembling of housing parts the housing being an extrusion
    • 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
    • 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
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • 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
    • F21V21/08—Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
    • 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
    • F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2121/004—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00 mounted on the exterior of houses or other buildings to illuminate parts thereof
    • 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

  • This invention relates to light sources and to lighting systems, and has a particularly advantageous application to the decorative illumination of structures and structural elements.
  • the invention is especially effective when employed with LEDs as light sources, although it is emphasized that broader applications are encompassed.
  • British patent publication 2102933 discloses a lighting display configuration made up of multiple transparent polycarbonate or plastics tubes linked by socket units with several differently oriented recesses to seat the tubes. Each of the tubes contains an array of light bulbs, filament lamps or light emitting diodes (LED).
  • the application illustrates a free standing framework of the tubes and linking socket units.
  • a known lighting product in strip form has a linear array of well-spaced LED chips in a close-fitting colored plastics tube of rectangular cross-section.
  • the tube is a little less than 1 cm in width and each LED chip is visible from the exterior both when not activated and as an individual point of light.
  • the product is used to provide low light level safety lighting, e.g., as a front edge "night light” marker for steps and stairways, and thus the rectangular tube is a protective carrier housing for the low light level LED marker lamps.
  • Another known product has small incandescent light bulbs embedded at intervals in an axial plane in a solid cylinder of plastics material.
  • the bulbs are arranged as series sets in parallel, electrically connected across a pair of longitudinally extending wires also embedded in the cylinder.
  • Each bulb stands out individually when the device is activated, so that the cylinder of plastics material effectively serves as a carrier forming a chain of spaced incandescent bulbs.
  • a light tube structure in which multiple light emitting diodes are arranged within an elongated translucent tube, provides a wide variety of opportunities for novel strip lighting of structures such as playgrounds and the walls and roofs of commercial premises including restaurants. This opportunity is further enhanced by the recent availability of light emitting diodes of substantially enhanced luminance relative to conventional devices, and of multi-color LED devices.
  • the invention provides for the fixing of translucent housings containing spaced LEDs on wall or frame surfaces of a wide variety of structures.
  • the invention is directed to a structure having one or more features highlighted or decorated by one or more of the above-described strip lighting devices.
  • the highlighted or decorated feature of the structure is a corner or edge, for example an edge of a roof, a window or a door, or a corner between respective wall or roof sections.
  • a particularly effective application is to a gable or ridge line of a building roof.
  • the strip lighting device(s) may be mounted along the edge or corner or adjacent to but offset from the edge or corner.
  • the housing of the strip lighting device may be substantially white, but is preferably a color other than white.
  • the structure is a commercial building and the color of the or each housing is chosen to match or complement the color(s) of identification or trade mark signage displayed on the building.
  • the highlighted or decorated feature may alternatively be, e.g., a post, a rail or a border.
  • a mounting means is provided that includes a mounting rail adapted to be fastened to said surface, and cooperable means on the strip and the housing for effecting a snap or sliding engagement of the housing to the strip so that the housing is generally parallel to, and preferably overlies, the strip.
  • the light sources are preferably light emitting diodes or other low voltage or semi-conductor devices.
  • the invention provides a housing assembly for strip lighting, including:
  • the snap or sliding engagement may be achieved between longitudinally extending rib means on one of the components, preferably the strip, and complementary groove means on the other. There may be opposed longitudinal undercut formations in the groove means.
  • the strip conveniently includes a substantially planar rear engagement with the respective surface to which it is fastened.
  • the outer or front face of the elongate hollow housing is defined by a transversely domed or convex segment.
  • the interior of the housing is provided with support means for one or more webs or strips extending longitudinally of the housing.
  • One such web or strip may be a support web for the light sources and for the electrical connections to these light sources, and may thereby incorporate ribbon cable.
  • a suitable support web is printed circuit board (PCB) laminate.
  • the web or strip may be transversely oriented at any angle, e.g. parallel to or normal to the backing surface, or otherwise.
  • the light sources may be on either face or side of the support web or strip, or on both faces or sides.
  • Connector means is preferably provided to physically couple a pair of the elongate housings whereby the housings may be relatively longitudinally displaced in situ, egg. by thermal expansion or building subsidence, without being uncoupled.
  • the light sources are provided on a plurality of support webs or strips having electrically conductive surface elements and extending longitudinally of the housings
  • connectors are preferably also provided for pairwise electrically and physically coupling the support webs or strips whereby the webs or strips may also be relatively longitudinally displaced in situ without being uncoupled, either physically or electrically. It is particularly advantageous to provide for such displacement both between housings and between support webs or strips carried by an array of the housings.
  • a further said strip or web may be an optical refractor or diffuser, arranged in front of or behind the light sources as appropriate.
  • the housing may be hollow and/or may define a passageway in which the light sources are disposed.
  • the housing may be substantially a solid, e.g. moulding about the pre-positioned light sources, or with cavities to receive the light sources.
  • the elongate housing is hollow, it is preferably a plastics (e.g. polycarbonate) extrusion of substantially uniform cross-section, and is preferably translucent but not transparent.
  • a translucent and also transparent housing may be preferred in some embodiments.
  • the housing can be substantially rigid.
  • a suitable form of the flexible tubular segment is a collapsible pleated web or concertina structure.
  • the base strip, flexible tube segments and coupling means are also at least partly provided in translucent material.
  • the means to diffuse, disperse or scatter may include e.g., a body portion of the housing, and/or light diffuser means in the passageway.
  • the invention may also provide a connector for physically coupling a pair of generally tubular components, including:
  • the material of the body is preferably silicone rubber or similar.
  • a connector for electrically and physically coupling a pair or more of support strips having electrically conductive surface elements including:
  • each of the electrically connecting means is provided contacts as an integral electrically conductive strip - more preferably, the strip is of appropriately conductive material, e.g. phosphor-bronze or other alloy, mounted to be resiliently deflected by said fingers.
  • the strip is of appropriately conductive material, e.g. phosphor-bronze or other alloy, mounted to be resiliently deflected by said fingers.
  • the spaced channels are arranged along opposite sides of the integral moulded body, and open laterally from the body.
  • these channels are provided in elongate side portions linked by a central cross-piece in an I or H configuration.
  • the resiliently deformable latch means is preferably provided as a pair of deflectable tongue portions with lugs, which tongue portions is defined by slits in a web portion of the integral moulded body, e.g. bridging said elongate side portions of the body.
  • the invention respectively provides (i) a strip lighting system including multiple strip lighting devices as described above, and (ii) a set of components for such a system including multiple such strip lighting devices, flexible tube segments, and suitable coupling means such as, e.g., connectors according to the aspects of the invention.
  • the illustrated strip lighting system 10 includes several light source enclosures 12 each having an elongate hollow housing 14 of a translucent material. Housings 14 are hereinafter referred to as light tube segments. These segments 14 are straight and substantially rigid, and are linked by flexible segments 16. Light tube segments 14 define respective internal passageways 13 in which multiple light sources in the form of light emitting diodes (LED) 8 are arranged at intervals on ribbon cable support strips 9, e.g. printed circuit board (PCB) laminates. These laminates may be of either substantially rigid or flexible type. The LEDs are preferably of the surface mounted type. The electrical conductor cables printed on these strips are electrically connected to an external power source/controller via junction boxes and upright cable enclosures 22.
  • the PCB laminate or other support strip may include local or extended layering or coating to provide an optical effect, e.g. reflection, in cooperation with the LEDs.
  • Light tube segments 14 are fixed to respective surfaces 5 of a structure 6 so that they each extend along and adjacent the surface, by base strips in the form of mounting rails 30 onto which the tube segments 14 can be releasably snap fitted.
  • the mounting rails 30 are in tum fixed onto the surfaces 5 by screws or the like hidden by the attached tube segments.
  • end inserts 40 for providing tube segments 14 with end coupling formations
  • end plugs 50 Figure 4
  • locking means 60 for disengagably coupling inserts 40 to the flexible tube segments 16 or to the end plugs 50.
  • Each substantially rigid light tube segment 14 comprises an extrusion of uniform cross-section in a plastics material selected so that it is translucent in a manner whereby to diffuse, disperse or scatter the light emitted by the interior LEDs, so that the tube appears to glow when viewed from the outside. In this way, an extended strip or line of light is provided, i.e. the tube appears to glow over a substantially continuous zone extending over its length and encompassing the contained light sources.
  • the translucent material is preferably such that the LEDs are not visible to the eye when not activated and viewed from outside the housing, and are substantially not distinguishable when activated and viewed from outside the housing.
  • a suitable material is a polycarbonate polymer composition with appropriate color pigment and a titanium dioxide whitening agent to determine the optical dispersion and degree of translucence or opaqueness.
  • the color may be chosen to match a color of the LEDs, or may be any other color, or white or colorless.
  • the color is preferably UV stabilized.
  • the material of the extrusion may contain dispersed light scattering elements such as metal shavings or chips, or dust, that are effective to diffuse, disperse or scatter the emitted light and so cause a sparkling effect.
  • diffusion, dispersal or scattering of the LED light may be facilitated by the presence of fine grooves, ribs or other surface variations in the extruded segment.
  • the extrusion material may include a component which is optically activated by electromagnetic radiation such as the sun's light or other radiation so that the emitted color, pattern or other optical characteristic may be altered.
  • FIG. 2 A cross-section of the extrusion is illustrated in Figure 2 . It includes a semi- S circular or semi-annular outside portion 23, generally straight side wall portions 24a, 24b, and a slightly flared thin-wall base structure 25 in which a pair of hollow longitudinally extending ribs 27a define a central groove or channel 27.
  • Channel 27 has shallow undercuts 28a, 28b along each side defined behind rounded ridge portions 29a, 29b.
  • side wall portions 24a, 24b of light tube segment 14 are provided with a number, typically four as illustrated, of longitudinally extending ribs 19a that are evenly spaced to define intervening grooves 19b. These grooves are provided for mounting ribbon cable strips 9, or optical diffuser or reflector strips or other accessories. This will be discussed further below.
  • Each mounting rail 30 is also an elongate extrusion of uniform cross-section formed in a material similar to light tube segments 14. It has a main base web 31 with two integral outstanding ribs 32a, 32b of shallow V configuration in cross-section. The lateral outside profile of this strip is thereby a close match with the side profiles of channel 27, including a V-groove 34a, 34b matching ridge portions 29a, 29b and a rib formation 35a, 35b matching undercuts 28a, 28b.
  • the mounting rail 30 is dimensioned to be an interference fit in channel 27.
  • the hollow thin-wall form of tube segment base structure 25 and the arrangement of ribs 32a, 32b on mounting rail 30 allow both components to flex and deform so that the tube segments 14 can be demountably attached to the mounting rails by pressing the tube segments onto the mounting rails in the direction of the arrow 80 in Figure 3 .
  • the ribs 32a, 32b flex inwardly towards each other and the hollow flanges 26a, 26b of the tube flex apart to allow the rib formations 35a, 35b to snap past ridges 29a, 29b into undercuts 28a, 28b.
  • the light tube segment can be mounted to a surface such as a wall surface by first fixing the mounting rails in place against the wall with fasteners 100 driven through the main web 31 of the rail, and then snapping the tube segment into place.
  • Mounting rails 30 have a smooth flat rear face 33 for engaging the wall or outer surface on which the rail is mounted, and the fasteners are hidden from view in the assembled configuration.
  • the mounting rails may include provision to support electrical conductors in particular applications. If it is desired at any time to rearrange or dismantle the strip lighting, tube segment 14 can be grasped and pulled off the mounting rails by inverting the snap action.
  • a building 150 e.g. a commercial premises such as a restaurant, includes a roof 152 with peripheral edges 153 and corners such as ridge line 154 or gables 156. Certain of these edges and corners are fitted with light tube segments 14 to form a strip lighting system for the roof.
  • the strip lighting system thus highlights and decorates the respective features of the roof.
  • the color of the tube segments may be chosen to complement the color scheme of the building and/or to match the color(s) of identification or trade mark signage displayed on the building. It will of course be understood that the strip lighting system may be applied with similar effect to other building lines, both internal and external.
  • the effect of the strip lighting system on the building as illustrated in Figure 3 is to enhance the profile of the roof line without creating glare, and without being unduly ostentatious.
  • the light has a richness without excessive brightness. Undesirable dark spots are eliminated or reduced.
  • Major electrical switchboard adjustments are avoided, and the inventive system does not include the inconvenience, high maintenance and fragility of neon tubes. Fixings are concealed and easy to install, and protruding structure, which might attract birds, is avoided. Very long continuous lines of light can be achieved, whereas neon tubes require regular interruption by discharge boxes.
  • mounting rails 30 may have an integral leg or rib, e.g. T, L, or X section, for elevating the rail from an edge or surface.
  • Twin rail extrusions may be provided. These variations may assist in e.g. positioning tube segments 14 as framing for surface mounted features.
  • Figure 4 illustrates the application of the strip lighting to a promotional display sign
  • Figure 5 is a sectional view showing the T-section leg 129 of mounting rail. This highlights the application of the invention to shopfitting generally.
  • Other applications include playgrounds e.g. to highlight posts or rails, and children's locations in general.
  • the mounting rail may be free-standing.
  • FIGS 6 and 7 depict an embodiment 100 of connector for coupling a pair of tube segments 14 to form a longer strip of light for applications such as that depicted in Figure 3 .
  • This connector is simple in form yet effective in adjusting for relative movement between the tube segments, e.g. due to thermal expansion or contractions.
  • Connector 100 is an integral generally tubular moulding in liquid silicone rubber which consists of a pair of substantially identical socket portions 102, 103 linked by a relatively thin walled center portion 104. Each socket portion 102, 103 has an internal profile to closely match the external profile of tube segments 14 so that each is slidably engageable with and about an end of a respective tube segment 14 so that the interiors of the tube segments are in communication within connector 100.
  • each socket portion 102, 103 has an internal flange 106 that defines a peripheral groove 107 to receive and sealingly grip the end 14a of the tube segment.
  • Centre portion 104, bridging the two flanges 106, is sufficiently thin to be able to accommodate or compensate for relative movement of the tube segments without uncoupling of the tube segments, by resiliently buckling, stretching or otherwise deforming. Further compensation is provided by sliding movement of the tube segments longitudinally of groove 107.
  • the material of the connector should be chosen to facilitate and optimize this role. Liquid silicone rubber (LSR) is especially suitable, because of its excellent elastic memory in deformation, its ability to sealingly grasp the tube segments, and its overall durability. The moulding thus achieves a substantially waterproof coupling with structural integrity, able to compensate for thermal expansion and other displacement between the tube segments 14.
  • LSR Liquid silicone rubber
  • Figures 8 and 9 illustrate an embodiment 110 of connector for electrically and physically interlinking ribbon cable support strips (typically PCB laminates) 9 within tube segments 14, or within a coupling between them.
  • ribbon cable support strips typically PCB laminates
  • connector 110 is an integral moulding in a suitable material.
  • the moulding defines a solid body comprising spaced parallel elongate side portions 112, 113 linked by a central cross-piece 114 in an I or H configuration. The bights within this body are closed by generally rectangular web portions 116, 117.
  • respective channels 118 are closed laterally of the connector.
  • Each channel is divided by a center block lug 120.
  • Mounted against top and bottom of each channel is a respective spring metal strip 122 (e.g. of phosphor bronze, not shown in Fig 8 ) shaped to pass over lug 120 and under intermediate lugs 124, and retained by slots 126 in end ribs 128.
  • channels 118 are open, between ribs 128, to receive respective end fingers 140, 142 of PCB laminates 9 ( Figure 10 ). These fingers force contact strips 122 resiliently apart, so ensuring electrical contact with contacts 144 on the top and bottom faces of the strip fingers.
  • the PCB laminates 9 are latched to the connector by engagement of lugs 132 in matching apertures 145 ( Figure 10 ) in the laminates.
  • Lugs 132 are provided on resiliently deflectable tongues 130 defined in the open edges of web portions 116, 117 by slots 134.
  • Lugs 132 have an inclined outer strike face 135 by which the strip forces the tongue/lug pair aside, and a steep inner face 136 which provides the latching function. Tongues 130 can be deflected manually to uncouple the components.
  • Connector 110 would typically include a formation (not shown) to prevent coupling except in a correct relative strip orientation. Connector 110 is also preferably such as to allow relative longitudinal displacement of the respective laminates, e.g. between limits determined by co-operating abutments without their being uncoupled either physically or electrically. Connector 110 is preferably designed and colored to minimize disruption to the uniformity of the light pattern emitted by the connected tube segments.
  • a set of the various components described and illustrated herein may be delivered to a site and mounted to a structure or set of walls in the manner described.
  • Connectors 110 would be used to bridge the diode mounting strips via the interiors of the flexible tube segments 16, and electrical power would be delivered to the diodes via upright cable enclosures 22 and junction boxes 20 ( Figure 1 ) to which at least some of the tube segments 14 would be attached.
  • the light levels of multiple tube segments could be controlled at a central point to achieve balance, or to obtain particular effects.
  • each tube segment or respective subgroups of tube segments may have a separate brightness control, e.g. a current level adjustment device mounted in the tube segment or adjacent mounting rail.
  • the light emitting diodes may be of any suitable type, e.g. the three-color diode sets now available, but it is desirable to avoid excessive variations in outputs between diodes for a given current, and to seek long life LED products.
  • the LEDs could be simply activated to provide constant and uniform illumination, or could be managed in a variable sequence by programmed logic circuits either internal or external to the illustrated configuration. By similar means, random and variable patterns, color and hue variations and color changes can be achieved.
  • the connectors 100 allow a degree of relative longitudinal movement between adjacent coupled tube segments 14, and the connectors 110 perform a similar function between adjacent coupled PCB laminates 9, the system is able to simultaneously compensate for or accommodate such dual movement, e.g. due to thermal expansion or building subsidence, both externally in the array of tube segments 14 and internally in the contained array of PCB laminates. Provision for such compensation is advantageous in most "real-world” applications of the inventive concepts.
  • light tube segments 14 may be fitted with end inserts 40 to allow them to be connected to other fittings.
  • a typical such insert is illustrated in Figure 11 to 13 . It is an integral moulding in a suitable plastics material, preferably that used for segments 14 and 42 and mounting rails 30.
  • the insert essentially includes three axially successive portions, i.e. a plug portion 42, an end flange 44 and a connector portion 46.
  • Plug portion 42 is precisely matched to make an interference fit into either of the open ends of a light tube segment 14 and thus has an external profile complementary to the internal profile of tube segments 14.
  • the interior of the insert is provided with a peripheral shallow shoulder 29a at the transition between plug portion 42 and flange portion 44, and with a longitudinally extending convex rib 29b at the top interior of plug portion 42.
  • End flange 44 is a lateral enlargement about the whole of plug portion 42 and has an external profile which closely matches that of each tube segment 14. It may thus also be snapped onto a base strip 30 if needed at an intermediate position on the base strip.
  • Connector portion 46 is a generally tubular coaxial extension from flange 44 having two additional features at its outer axial end: an external flange 47 and a peripherally extending frustoconical enlargement 48 of the internal bore 45. This enlargement is to provide an 0-ring seat, as will be further explained.
  • the flange 47 locates a locking ring 60.
  • An assembled tube segment 14 for installation would be fitted with at least an array of light emitting diodes 8 mounted on a suitable cable ribbon support strip 9. Typically, this strip would be mounted in a lower pair of grooves 19b. If desired for particular effects, a suitable diffuser strip may be mounted in another of the groove pairs, or a refractor strip may be mounted in a still further pair, typically between the light emitting diodes and the diffuser strip relative to the curved front of the tube. Once these are in place, they can be retained by fitting inserts 40 to either or both ends of the tube and fixing them in place with a suitable adhesive or contact cement at the interface between plug portion 42 at the internal surface of the tube. Other fixing and closure arrangements are of course possible.
  • the orientation of the plane of strip 9 may be varied in other embodiments.
  • this plane may be normal to surface 5 in Figure 2 .
  • LEDs 8 may be on either or both surfaces of strip 9.
  • a flexible tube segment 16 is shown in situ in Figure 1 and detailed in Figures 14 and 18 .
  • Flexible tube segment 16 is a thin walled moulding of a translucent material similar to that of tube segments 14.
  • the general structure is of a corrugated or pleated configuration by virtue of which the segment is highly flexible and able to be compressed concertina - fashion, bent along its axis through 90° or more.
  • the segment is provided with end portions 84 which include a tapered spigot 85 and a pair of diametrically opposite arcuate lugs 86 which are set back from tapered end portion 85 so that a very shallow reversely- facing annular shoulder 88 at the inner end of spigot portion 85 defines an 0-ring seat 89 between it and lugs 86.
  • a further component for effecting coupling of the flexible tubular segments 16 to the rigid tube segments 14 is integrally moulded locking ring 60 ( Figures 15 to 17 ).
  • This essentially consists of a bayonet socket ring 62 and a snap fit half ring 64 with an undercut 65.
  • the outer surface of the ring has integral grip-enhancement ribs 63.
  • Bayonet socket ring 62 has diametrically opposite arcuate recesses 66 that are matched to receive lugs 86 of flexible tube segments 16.
  • the snap fit half ring 64 is slightly larger than semi-circular, subtending at its outer rim about 250° and extending between deformable wings 67a, 67b.
  • FIG. 18 depicts in cross-section an assembly of a flexible tube segment 16 with tube segments 14, the locking ring 60 is applied to the body of insert 40 behind flange 47: the wings 67a, 67b deform apart so that the locking ring snaps about the body of the insert and is then retained by engagement of flange 47 behind undercut 65.
  • the end formation 84 of a flexible tube segment 16, with the 0-ring 90 in seat 89 is then introduced into the locking ring by passing lugs 86 through recesses 66.
  • the 0-ring 90 held in seat 89 is clamped against frustoconical end surface 48, thereby clamping all of the components together to form the assembly shown in Figure 18 .
  • the joint is preferably liquid tight and/or gas tight, especially if the system is intended for outdoor installation.
  • End plug 50 has an end formation 51 similar to end portion 84 of flexible tube segment 16, including a spigot portion 55, shoulder 58 and 0-ring seat 59. However, in this case, the interior is closed by a transverse membrane 52 flush with the spigot end of the plug, and the component is completed by an external flange 54. Assembly to an end insert 40 using a locking ring 60, and clamping an 0-ring 90, is similar to that described above for the flexible tube segment and is depicted in Figure 19 .
  • End inserts 40 can also be employed to couple a pair of tube segments to the respective ends of a tubular elbow component 220 ( Figures 4 , 22 ) defining a selected angle bend between the two segments.
  • This component may be rigid or flexible, and may conveniently also be formed in the aforementioned liquid silicone rubber (LSR).
  • end plug 50 is depicted in Figure 23 , and consists of a LSR end cap 250 that fits onto end insert 40 and may include a port 252 for a cable 254 or other accessory. This allows an effective watertight seal around the cable.
  • FIG. 24 and 25 An alternative coupling arrangement is shown in Figures 24 and 25 .
  • the tube segments 14 are closed by polycarbonate end caps 200 with ports 201 for conductor pins 202.
  • These pins 202 are held in a liquid silicone rubber coupler 204 shaped, like connector 100, to the profile of the tube segments.
  • Coupler 204 has central bosses 206 that retain the conductor pins 202 and project into and seal ports 201. Coupler 204 embraces and grasps the respective end caps 200.
  • the illustrated embodiments- with the enclosed tubes 14, 16, separate mounting rails 30 and various forms of coupling - provide a strip lighting system in which the LED's are protected in an environment which is able to be sealed against moisture incursion, but is easily installed and dismantled.
  • the installation may thus be substantially permanent or only temporary. Tubes may be readily detached individually for service of the electrical componentary, e.g. replacement of failed diodes.
  • the component bodies - tube segments 14, 16, mounting rails 30, external connectors 110, end inserts 40, locking ring 60, and end plugs 50- may be provided in a single uniform color, or in any other color configuration.
  • advantageous continuity of the strip lighting can be achieved. Variations of intensity are easily obtained with choice of material and internal LED configuration or control.
  • the tube segments 14 and the mounting rails 30 may be extruded in quite different colored materials.
  • the tube segments 14 may be separable into base 14a and cap 14b portions of different colors and/or materials.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Radiation-Therapy Devices (AREA)
EP14175208.9A 1997-07-28 1998-07-28 Streifenbeleuchtung Withdrawn EP2796781A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPO8240A AUPO824097A0 (en) 1997-07-28 1997-07-28 Strip lighting
AUPP2590A AUPP259098A0 (en) 1998-03-26 1998-03-26 Strip lighting
AUPP3229A AUPP322998A0 (en) 1998-04-29 1998-04-29 Strip lighting
EP98937339.4A EP1000295B1 (de) 1997-07-28 1998-07-28 Lichtleiste

Related Parent Applications (1)

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EP98937339.4A Division EP1000295B1 (de) 1997-07-28 1998-07-28 Lichtleiste

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EP2796781A2 true EP2796781A2 (de) 2014-10-29
EP2796781A3 EP2796781A3 (de) 2015-05-27

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EP98937339.4A Expired - Lifetime EP1000295B1 (de) 1997-07-28 1998-07-28 Lichtleiste

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JP (1) JP2001512279A (de)
CN (1) CN1279755A (de)
CA (1) CA2297822A1 (de)
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WO (1) WO1999006759A1 (de)

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WO1999006759A1 (en) 1999-02-11
EP1000295B1 (de) 2014-07-23
EP1000295A1 (de) 2000-05-17
EP1000295A4 (de) 2008-03-19
CA2297822A1 (en) 1999-02-11
ES2511028T3 (es) 2014-10-22
CN1279755A (zh) 2001-01-10
EP2796781A3 (de) 2015-05-27
JP2001512279A (ja) 2001-08-21

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