EP2558771B1 - Leuchte mit in der länge veränderbarer tragstrebe für ein leuchtmittel - Google Patents

Leuchte mit in der länge veränderbarer tragstrebe für ein leuchtmittel Download PDF

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Publication number
EP2558771B1
EP2558771B1 EP10719290.8A EP10719290A EP2558771B1 EP 2558771 B1 EP2558771 B1 EP 2558771B1 EP 10719290 A EP10719290 A EP 10719290A EP 2558771 B1 EP2558771 B1 EP 2558771B1
Authority
EP
European Patent Office
Prior art keywords
bands
luminaire
band
support strut
extended position
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
EP10719290.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2558771A1 (de
Inventor
Hans Nopper
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.)
Iulite GmbH
Original Assignee
Iulite GmbH
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Filing date
Publication date
Application filed by Iulite GmbH filed Critical Iulite GmbH
Publication of EP2558771A1 publication Critical patent/EP2558771A1/de
Application granted granted Critical
Publication of EP2558771B1 publication Critical patent/EP2558771B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21S6/00—Lighting devices intended to be free-standing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • F21S6/003—Table lamps, e.g. for ambient lighting for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
    • 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
    • F21V21/14—Adjustable mountings
    • F21V21/22—Adjustable mountings telescopic
    • 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
    • F21V21/14—Adjustable mountings
    • F21V21/26—Pivoted arms

Definitions

  • the present invention relates to a lamp having a lamp base, an elongated supporting strut held by means of the lamp socket, which can be changed in its length, and a lamp arranged on the support strut.
  • the US 4,706,172 also discloses a luminaire having a luminaire base and a support strut held therewith of at least two bands, the length of which is variable by being convertible from a rolled-up position into an extended position or vice versa.
  • Object of the present invention is therefore to provide a luminaire, while maintaining the functionality of the DE 202 10 215 U1 known luminaire has a significantly improved mechanical stability of the support strut.
  • a luminaire according to the invention comprises a luminaire base and an elongated support strut held by means of the luminous socket, which can be changed in its length. Furthermore, the luminaire according to the invention comprises a light-emitting means arranged on the support strut.
  • the term light socket in the context of the present application all devices are to be understood that are suitable as a stand or attachment means of the lamp. Also, the support strut does not need to be located directly on the lamp base, but may also extend at a distance from this with the interposition of other support elements.
  • the support strut now consists of at least two bands, each of which can be moved from a rolled-up position into an extended position or vice versa, can be rolled up for itself and are mechanically connected at least at one point, such that the bands mechanically adjoin one another in the extended position support.
  • the straps have in their extended position transverse to their direction of extension in a first direction, a low buckling resistance, and in a direction opposite to the first direction of the second direction, a high buckling resistance.
  • the term "buckling stiffness" should be understood to mean the ability to maintain the stretched position under the action of a force directed transversely to the direction of extension of the belt.
  • the bands also have an arcuate cross section in the extended position, and the outer surfaces of this arcuate cross section of the bands are arranged adjacent to one another in the stretched position of the bands.
  • the support strut consists of at least two bands which mutually support one another in the extended position. This improves the construction of the utility model DE 202 10 215 U1 said lamp to the effect that no stable stretched position of each band is needed more alone. Rather, there is sufficient mechanical stability of the support strut in its extended position just by the fact that the roll-up bands, which may not be alone or have no sufficient stability, in particular buckling resistance, so support one another that results in the sum of sufficient mechanical stability.
  • Particularly suitable bands have proven to have a profile which has a high buckling resistance transversely to the direction of extension of the band in a first spatial direction, and in a direction perpendicular thereto, which is also oriented transversely to the extension direction, a significantly reduced buckling resistance.
  • arcuate profiles may be mentioned for this, in particular U and V profiles, but also W profiles or corrugated profiles in general have this advantageous property.
  • the bands are mechanically connected to each other at least one point, so they stiffen each other, so that one of at least two, but possibly also three, four or more bands existing support strut a high mechanical strength, in particular has a high buckling resistance in all directions transverse to the extension direction of the support strut. It is particularly advantageous if the direction of low buckling stiffness of the bands is oriented in the horizontal direction.
  • the rolled-up part of the support strut is arranged in the luminaire base, in particular held by it.
  • the lamp base can also be advantageously designed so that it is suitable for mounting the lamp, for example on a wall or ceiling surface or a plate of a piece of furniture.
  • each band of the support strut in its rolled-up state will have a different cross section than in its extended position.
  • the lamp base comprises forming means which are intended to change the cross-sectional shape of each band during extension or insertion of the support strut.
  • the lamp base have a forming portion for an insertable part of the bands, by means of which the bands due to the shaping of the forming area continuously from their cross-sectional shape in the rolled-up position to its cross-sectional shape in its extended position and vice versa be transferred.
  • the forming area thus serves as a guide to transfer the support strut from a stretched to a rolled-up position.
  • the user of the lamp thus only needs to apply a force in the longitudinal direction of the support strut.
  • the support strut can be pivoted about an axis of rotation relative to the horizontal, and in particular in a desired angular position can be determined by the user.
  • the support strut can not only change in length, but can also assume any angular positions.
  • the pivot axis is preferably in the range of the light socket and is aligned horizontally.
  • One way to connect the bands as provided according to the invention in at least one point with each other, is to pierce them at one point and to connect them positively by a screw.
  • a material connection e.g. Welding (for example by means of a spot weld), gluing (for example by means of a glue point) or pressing, or else via a positive connection such as a closure, is fundamentally possible.
  • the at least one mechanical connection point is arranged on the outer end of the support strut. Furthermore, he can provide a mechanical connection to the lamp or lamp head.
  • the bands can be electrically conductive. This configuration means that no separate, electrical leads are necessary or visible. For design reasons, this embodiment is advantageous. According to a variant, the bands may also be electrically isolated from each other. Preferably, in this embodiment, the at least one mechanical connection between the bands is made electrically non-conductive.
  • a safety shutdown can be integrated into the lamp according to the invention. This can be integrated in the form of a monitoring device in the lamp, the line resistance of the bands and possibly the Measures bulb. If the measured resistance changes significantly, which could occur, for example, in the event of a kinking of the bands, ie a mechanical failure of the support strut, the monitoring device automatically switches off the voltage supply of the luminous means. Such a monitoring device can be integrated in particular in a ballast of the lamp.
  • Fig. 1 on the one hand embodiment of a lamp 100, which is essentially a lamp base 1, one at an adjustable angle to the horizontal upwardly extending support strut 2 and one at the free end the supporting strut 2 arranged lampshade 6 includes, which receives a light source 3, for example a light bulb, a fluorescent tube or a modern semiconductor-based light source.
  • a light source 3 for example a light bulb, a fluorescent tube or a modern semiconductor-based light source.
  • the lamp base 1 is designed as a hemispherical housing, in which the rolled-up part of the bands 4, together with associated roll-up mechanism 15, a pivoting device 13 and a ballast 14 for controlling the lighting means 3 on.
  • the support strut 2 is in the lamp 100 according to Fig. 1 of two bands 4, which are convertible from an extended position to a rolled-up position. In this position, the rolled ends of the bands 4 are completely absorbed in the Aufrollmechanik 15 and disappear virtually completely in the light socket 1.
  • the bands 4 are made of a metal sheet (eg spring steel) with a thickness of typically less than 1 millimeter, preferably below 0, 5 mm, formed, wherein the bands 4 are electrically insulated from each other by a coating applied on all sides or plastic coating.
  • the bands 4 serve as electrical leads for the lamp 3.
  • Fig. 3 The mechanical connection between lampshade 6 and support strut 2 is in Fig. 3 shown, which is a section enlargement of Fig. 2 represents. How out Fig. 3 It can be seen that the bands 4 are connected at their outer end by means of a screw 7 with an elongate attachment lug 12 of the lampshade 6. As a result, an articulated connection between lampshade 6 and support strut 2 is realized. Furthermore, the attachment lug 12 is divided transversely to its longitudinal axis, wherein the two parts are rotatably supported against each other about the common longitudinal axis in a suitable manner. Overall, this results in the adjustability of the lampshade 6, in Fig. 1 indicated by the corresponding arrows on the lampshade 6, namely a rotatability of the lampshade 6 against the longitudinal axis of the support strut 2 and a pivoting of the lampshade 6 against the horizontal.
  • each band 4 in the extended state has an arcuate cross-section transverse to its direction of extent, as seen in FIG Fig. 7
  • a sectional view through the support strut 2 along the line II in Fig. 1 shows. This arcuate cross-section has the consequence that each individual band 4 in the direction transverse to the direction of extension y-direction according to Fig.
  • Fig. 3a shows an alternative embodiment of a support strut 2 of a lamp 100 according to the invention.
  • the arcuate bands 4 are oriented with their backs 9 against each other, so that they are mechanically supported with their backs 9 along a line of contact L, as shown in the sectional view Fig. 7 It can be seen that a section along the line III-III in Fig. 3a shows. This leads to a relation to the embodiment according to Fig. 3 again increased buckling stiffness of the support strut 2 in total in both the positive and in the negative y-direction.
  • the stability of the supporting strut 2 is further increased by the fact that the bands 4 touch with their outer surfaces 8 and thereby additionally mechanically support one another along an extended contact line.
  • the bands 4 When rolled up, the bands 4 are generally rectilinear in cross-section (see Fig. 6 ). However, this is optional, in principle a change in the cross section of the bands 4 when rolling up is not absolutely necessary. In this flat state, a greater stress is generated on the inner surface 9 of the band 4 than on the outer surface 8. However, perpendicular to the illustrated cross-section, the stresses on the inner surface 9 and on the outer surface 8 are substantially equal, so that the straight shape is assumed ,
  • each band 4 is assigned its own reeling mechanism 15, as shown in the plan view Fig. 2 is apparent.
  • each Aufrollmechanik 15 is formed in the manner known from the prior art of roll-up metal measuring tapes, which can be drawn when not in use, for example by means of spring force in a housing and rolled up there.
  • a pivoting device 13 is arranged in the lamp base 1, on which the two Aufrollmechaniken 15 of the two bands 4 are jointly stored, so that the bands 4 can be pivoted jointly in its extended position about a horizontal axis of rotation P.
  • the pivoting device 13 is designed to be self-locking, so that the support strut 2 is held regardless of its extension length in each angle position desired by the user.
  • the pivoting device is out of the FIGS. 1, 2 and 4 seen.
  • Each Aufrollmechanik 15 in turn comprises a rotatably mounted shaft 10, on each of which a tape 4 can be rolled up, as from Fig. 4 is apparent.
  • each band 4 is mechanically biased against its extension direction by means of a force acting on the respective shaft 10 spring (not shown).
  • each roll-up mechanism 15 is designed to be self-locking, such that each band 4 is mechanically locked in any extension state desired by the user.
  • each Aufrollmechanik 15 each comprises a forming region 5, as in Fig. 4 indicated schematically.
  • the forming region 5 ensures the forming of the strips 4 from the straight-line cross-section Fig. 6 in an arcuate cross-section, for example according to Fig. 5 or 7 and when driving in the support strut 2 for the forming of the bands 4 of an arcuate in a rectilinear cross-section.
  • This pivoting device 13 is rotatably mounted on the formation of the axis of rotation P on a shaft 11, which in turn is rotatably connected to the housing of the light socket 1.
  • the support strut 2 is at least as far as its part extended from the lamp base 1 part, designed to be variable in length. By applying a manual force in the longitudinal direction of the support strut 2, this can either push into the light socket 1, so that the lower ends of the bands 4 roll around the shaft 10, which is rotatably mounted in the lamp base 1. In addition, the support strut 2 can be pulled out to extend. This is indicated by the double arrow in Fig. 1 shown. The angle of the support strut 2 against the horizontal is variable by the user, as in Fig. 1 indicated by the dashed double arrow.
  • Figure 3 shows various alternative band configurations of two and more bands 4 of arcuate cross-section to form the support strut 2.
  • the figure may be seen as the "back-to-back" configuration of Figs Fig. 5 can be further developed for configurations with three or four bands 4, in which the bands 4 are in turn at least at one point mechanically connected to at least one adjacent band 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP10719290.8A 2010-04-16 2010-04-16 Leuchte mit in der länge veränderbarer tragstrebe für ein leuchtmittel Active EP2558771B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/055064 WO2011127986A1 (de) 2010-04-16 2010-04-16 Leuchte mit in der länge veränderbarer tragstrebe für ein leuchtmittel

Publications (2)

Publication Number Publication Date
EP2558771A1 EP2558771A1 (de) 2013-02-20
EP2558771B1 true EP2558771B1 (de) 2014-09-17

Family

ID=43216407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10719290.8A Active EP2558771B1 (de) 2010-04-16 2010-04-16 Leuchte mit in der länge veränderbarer tragstrebe für ein leuchtmittel

Country Status (4)

Country Link
US (1) US9273837B2 (zh)
EP (1) EP2558771B1 (zh)
CN (1) CN103189682B (zh)
WO (1) WO2011127986A1 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012100487A1 (de) * 2012-01-20 2013-07-25 Nopper Design UG (haftungsbeschränkt) Faltbares Konstruktionselement für mechanisch belastbare, zusammenlegbare konstruktive Anordnungen
US10520132B2 (en) * 2016-11-08 2019-12-31 River Front Services, Inc. Deployable prop
EP3940334A1 (en) 2017-08-24 2022-01-19 River Front Services, Inc. Explosive detonating system and components
US11543224B2 (en) 2017-08-24 2023-01-03 River Front Services, Inc. Explosive detonating system and components
US10947169B2 (en) 2018-06-29 2021-03-16 River Front Services, Inc. Deployable explosive charge structure
GB2613640A (en) * 2021-12-13 2023-06-14 Redwards Consultants Ltd Lamp assembly

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4706172A (en) * 1986-03-27 1987-11-10 Samuel Lebowitz Orientable lamp
IT1217683B (it) * 1988-05-20 1990-03-30 Artemide Spa Apparecchio per l'illuminazione artificiale a bracci snodati
US5001617A (en) * 1989-06-16 1991-03-19 Erik Chan Self-balanced, multiposition holder
IT1233330B (it) * 1989-09-19 1992-03-27 Paf Srl Lampada da tavolo.
US5169226A (en) * 1992-05-04 1992-12-08 Friedman Arthur S Portable desk light
DE29706090U1 (de) 1997-04-09 1997-05-22 Schoor Berthold Van Dr Ing Veränderbares bandförmiges Leuchtengestänge
DE20210215U1 (de) 2002-07-02 2003-06-12 Struppler Associates Design Gm Leuchte mit längenveränderbarer Tragstrebe bzw. -säule
GB2435507B (en) 2006-02-28 2008-02-27 Intech Plastics A lamp assembly
CN200961797Y (zh) * 2006-09-18 2007-10-17 王景华 一种智能型视力保护台灯
US7699492B2 (en) * 2006-12-08 2010-04-20 Levine Jonathan E Lighting device with clip
CN201034274Y (zh) * 2007-05-15 2008-03-12 欧展翔 二级调压的led台灯
US20110063818A1 (en) * 2009-09-16 2011-03-17 Tai-Hsiang Huang Desk lamp

Also Published As

Publication number Publication date
US20150092427A1 (en) 2015-04-02
CN103189682B (zh) 2016-05-04
WO2011127986A1 (de) 2011-10-20
EP2558771A1 (de) 2013-02-20
CN103189682A (zh) 2013-07-03
US9273837B2 (en) 2016-03-01

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