EP1762784B1 - Lamp having a pivotable arm - Google Patents
Lamp having a pivotable arm Download PDFInfo
- Publication number
- EP1762784B1 EP1762784B1 EP06018942A EP06018942A EP1762784B1 EP 1762784 B1 EP1762784 B1 EP 1762784B1 EP 06018942 A EP06018942 A EP 06018942A EP 06018942 A EP06018942 A EP 06018942A EP 1762784 B1 EP1762784 B1 EP 1762784B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- standard
- parallelogram construction
- hinged
- construction
- lamp
- 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.)
- Not-in-force
Links
Images
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
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/14—Adjustable mountings
- F21V21/26—Pivoted arms
Definitions
- the invention relates to a lamp comprising a standard, a parallelogram construction formed by bars, which is hinged on the standard, and a lampshade or another object hinged on this, in which the parallelogram construction comprises two at any rate virtually parallel long and two at any rate virtually parallel short bars, in which a first long bar is hinged on the standard and the other second long bar extends past the parallelogram construction and is connected by the protruding part to a device for keeping the parallelogram construction in a virtually stable position, which device connects the protruding part of the second long bar to the standard, and in which one of the short bars also extends past the parallelogram construction and is connected to the lampshade by the protruding part via a hinge construction.
- This lamp construction has a folding arm formed by the parallelogram construction, so that the lampshade can be turned to a desired position.
- Such a lamp is known from British patent application GB 1 290 891 .
- the parallelogram construction has to be turned 180 degrees around the vertical axis to illuminate the other side and cannot fold from left to right in a vertical plane. This can be a disadvantage if the space for turning around a vertical axis is not available.
- the device for keeping the parallelogram construction in a stable position is formed by a spring connected to the standard, which is connected by an end to the protruding part of the second long bar.
- the disadvantage of this known lamp is that the protruding part of the second long bar bumps against the spring housing when fully extended, so that if the parallelogram construction is turned further the lamp could fall over and the user's fingers could get trapped between this housing and the protruding part of the second bar.
- the lamp according to the invention is characterised in that the device for keeping the parallelogram construction in a virtually stable position comprises a weight that can be pushed along and turned around the standard and which is connected via a rod or cord to the protruding part of the second long bar.
- a cord is here defined as any flexible, stretchable connecting element, such as for example a cable, string or chain, etc.
- the movement of the protruding part of the second bar is here not limited by a stop so that the above disadvantages of the known lamp cannot occur in the lamp according to the invention. This makes the lamp according to the invention safer to use than the known lamp.
- a lamp is known from GB-A-433.617 in which the movement of the protruding part of one of the long bars is also not limited.
- the long bar hinged on the standard is provided with a protruding part, which is connected to the device, so that the other long bar must also be connected to the device to keep the lamp in a stable position.
- this device is formed by helical springs, which can trap the user's skin or hair, so that this lamp is also less safe to use than the lamp according to the invention.
- the device is connected to the standard at a distance from the hinge point of the parallelogram construction.
- the parallelogram construction is preferably hinged on the standard at the position of one of the hinge points. This hinge point is preferably subjected to friction and/or is preferably provided with a clamping device to make the adjustment of the parallelogram construction stiffer, otherwise the adjustment of the parallelogram construction would be too weak/easy, which is undesirable.
- An embodiment of the lamp according to the invention is characterised in that the parallelogram construction can be turned around a vertical axis, in which the fulcrum is near the point where the parallelogram construction is hinged on the standard. This puts less strain on this turning axis than would be the case if it were lower down.
- a further embodiment of the lamp according to the invention is characterised in that the standard comprises two parts connected to and above each other, in which the top part is connected to the parallelogram construction and can be turned around a vertical axis.
- FIGS 1 and 2 show an embodiment of the lamp according to the invention in two different perspectives.
- the lamp 1 has a standard 5, as well as a parallelogram construction 7 formed by bars, which is hinged on the standard, and a lampshade 9 that is connected to this via a hinge construction 8.
- the parallelogram construction 7 is formed by a first and a second long bar 11 and 13 respectively, which are virtually parallel to each other, and two short bars 15 and 17, which are also virtually parallel to each other. All bars 11-17 are hinged together.
- the parallelogram construction 7 is connected to a top part 25 of the standard at the position of one of the hinge points 18.
- This top part 25 of the standard has a swivel connection around a vertical axis 27 to a bottom part of the standard 5.
- the hinge point 18 is subjected to friction so that the parallelogram construction 7 is stiffer to adjust and is kept more firmly in position.
- the second long bar 11 extends beyond the parallelogram construction and is connected by the protruding part 11 a to a device 19 to keep the parallelogram construction 7 in a stable position.
- the short bar 15 also extends past the parallelogram construction and is hinged on the lampshade 9 via the protruding part 15a.
- the device 19 for keeping the parallelogram construction 7 in a stable position is formed by a weight 21, which can be pushed along and turned freely around the standard, and which is connected via a rod or cord 23 to the protruding part 11 a of the second long bar 11.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Pivots And Pivotal Connections (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1029913A NL1029913C2 (nl) | 2005-09-09 | 2005-09-09 | Lamp met een knikbare arm. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1762784A1 EP1762784A1 (en) | 2007-03-14 |
EP1762784B1 true EP1762784B1 (en) | 2008-11-19 |
Family
ID=36143562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06018942A Not-in-force EP1762784B1 (en) | 2005-09-09 | 2006-09-11 | Lamp having a pivotable arm |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1762784B1 (nl) |
AT (1) | ATE414871T1 (nl) |
DE (1) | DE602006003703D1 (nl) |
ES (1) | ES2320370T3 (nl) |
NL (1) | NL1029913C2 (nl) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB433617A (en) * | 1934-02-10 | 1935-08-12 | George Carwardine | Improvements in equipoising mechanism |
GB619370A (en) * | 1946-12-05 | 1949-03-08 | Lawes Bros Ltd | Improved equipoising mechanism |
GB647785A (en) | 1947-10-14 | 1950-12-20 | Geoffrey Warner Parr | Improvements in or relating to lamp-stands |
DE1946393U (de) * | 1966-06-08 | 1966-09-22 | Twist Light As | Anordnung bei einem tragerarm, beispielsweise fuer elektrische lampen. |
US3543019A (en) * | 1967-11-17 | 1970-11-24 | Jacob Jacobsen | Equipoised lamp |
US3480304A (en) * | 1968-05-31 | 1969-11-25 | Edna A Mehr | Swivel joint for a lamp |
GB1290891A (nl) * | 1969-04-08 | 1972-09-27 | ||
US5170975A (en) * | 1991-06-06 | 1992-12-15 | Alan Chadwick | Articulated arm with spring for counterbalancing |
DE29517855U1 (de) * | 1995-11-13 | 1996-01-11 | Bermes, Peter, 79108 Freiburg | Tisch- oder Stehlampe |
DE19820710A1 (de) * | 1998-05-11 | 1999-11-18 | Kai Trebesius | Stativ mit ausbalanciertem Hebelarm |
-
2005
- 2005-09-09 NL NL1029913A patent/NL1029913C2/nl not_active IP Right Cessation
-
2006
- 2006-09-11 AT AT06018942T patent/ATE414871T1/de not_active IP Right Cessation
- 2006-09-11 ES ES06018942T patent/ES2320370T3/es active Active
- 2006-09-11 EP EP06018942A patent/EP1762784B1/en not_active Not-in-force
- 2006-09-11 DE DE602006003703T patent/DE602006003703D1/de active Active
Also Published As
Publication number | Publication date |
---|---|
EP1762784A1 (en) | 2007-03-14 |
ATE414871T1 (de) | 2008-12-15 |
DE602006003703D1 (de) | 2009-01-02 |
NL1029913C2 (nl) | 2007-03-12 |
ES2320370T3 (es) | 2009-05-21 |
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