EP1645796A2 - Ein mechanischer Dimmer für eine Leuchte - Google Patents

Ein mechanischer Dimmer für eine Leuchte Download PDF

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Publication number
EP1645796A2
EP1645796A2 EP05256310A EP05256310A EP1645796A2 EP 1645796 A2 EP1645796 A2 EP 1645796A2 EP 05256310 A EP05256310 A EP 05256310A EP 05256310 A EP05256310 A EP 05256310A EP 1645796 A2 EP1645796 A2 EP 1645796A2
Authority
EP
European Patent Office
Prior art keywords
filter
luminaire
mechanically
light source
rotor
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Withdrawn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
EP05256310A
Other languages
English (en)
French (fr)
Other versions
EP1645796A3 (de
Inventor
Richard Blake
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.)
Spearmark International Ltd
Original Assignee
Spearmark International Ltd
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 EP04256275A external-priority patent/EP1522787A3/de
Priority claimed from GB0425182A external-priority patent/GB2418979B/en
Application filed by Spearmark International Ltd filed Critical Spearmark International Ltd
Priority to EP05256310A priority Critical patent/EP1645796A3/de
Publication of EP1645796A2 publication Critical patent/EP1645796A2/de
Publication of EP1645796A3 publication Critical patent/EP1645796A3/de
Withdrawn legal-status Critical Current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
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • 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
    • F21S6/004—Lighting devices intended to be free-standing with a lamp housing in direct contact with the floor or ground
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • 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
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • F21S8/035—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade by means of plugging into a wall outlet, e.g. night light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/37—U-shaped

Definitions

  • This invention relates to a mechanical device for reducing the brightness of a luminaire.
  • this invention relates to a device for reducing the brightness of a luminaire using a compact fluorescent tube.
  • the present invention provides a luminaire that may be placed at the child's bedside and that may be dimmed to a desired level.
  • the present invention provides a mechanically dimmable luminaire comprising a filter, a fluorescent light source and an actuation means for providing relative movement between the filter and the fluorescent light source.
  • the filter may be movable relative to a fixed light source.
  • the light source may be moveable relative to a fixed filter.
  • the actuation means may comprise means whereby rotation of an actuator results in linear movement of the filter.
  • linear movement of the filter may be achieved by linear movement of an actuator.
  • the filter may be configured to rotate to obscure or partially obscure the light source.
  • the filter may be in two or more parts which when rotated relative to each other allow different levels of light to pass through.
  • the actuation means may further comprise means to guide the filter during its linear movement.
  • the guide means may guide the filter during its rotational movement.
  • the filter is tubular. More preferably, the filter is in the form of an open-ended cylinder.
  • the filter is preferably translucent and may be provided with a coloured tint so that when the filter is moved over the light source the light emitted from the luminaire changes in colour.
  • the filter may be provided with a pattern so that when the filter is moved across the light source the pattern is visible through or projected from the luminaire.
  • the filter may be opaque.
  • the luminaire may have at least one opaque surface comprising at least one translucent region.
  • the luminaire may have two opaque surfaces, each surface comprising at least one translucent region.
  • the luminaire may not be provided with any opaque surfaces.
  • a mechanical dimming device comprising an actuator, to which is attached a rotor, the rotor engaging with a stator, to which is attached a filter, so that, in use, movement of the actuator results in linear movement of the filter.
  • the actuator is a rotary actuator.
  • the rotary actuator may be provided around its perimeter with at least one recess for engagement with at least one boss on a mounting plate.
  • the rotor may be provided with at least one helical thread.
  • the stator may be provided with at least one part of at least one helical thread complementary with the at least one helical thread provided on the rotor.
  • a method for variable reduction of the light output of a fluorescent light source by covering at least a portion of the tube with a filter.
  • Figure 1 is a front elevation view of the mechanically dimmable luminaire of the present invention, showing an opaque cover provided with a translucent region attached to one side of the lampshade.
  • Figure 2 is a rear elevation view of the mechanically dimmable luminaire of the present invention showing, in dashed lines, the compact fluorescent tube, the light fitting and the mechanical dimmer within the lampshade.
  • Figure 3 is a front elevation view of the mechanically dimmable luminaire of the present invention, with the front of the lampshade cut away to show the compact fluorescent tube, light fitting and the mechanical dimmer.
  • Figure 4 is a top plan view of the mechanically dimmable luminaire of the present invention, showing the mechanical dimmer located within the lampshade.
  • Figure 5 is a bottom plan view of the mechanically dimmable luminaire of the present invention, showing the light fitting located within the lampshade.
  • Figure 6 is an exploded perspective view of the mechanical dimmer of the present invention.
  • Figure 7 is a top perspective view of the mechanical dimmer of the present invention, with the filter in a partially lowered position located around the compact fluorescent tube.
  • Figure 8 is a bottom perspective view of the mechanical dimmer of the present invention with the filter in a fully lowered position located around the compact fluorescent tube.
  • the luminaire 1 comprises a lampshade 3 manufactured from a single sheet of translucent plastic (shown in Figure 4 and Figure 5).
  • the lampshade 3 is folded into a tubular form with a circular cross-sectional profile.
  • each vertical edge of the lampshade is provided with a number of complementary elements, the elements of one edge interlocking with the elements of the other edge.
  • the lampshade 3 may be formed in a number of alternative shapes, for example it may have a square cross-sectional profile.
  • An opaque cover 5 is attached to the front face of the lampshade 3.
  • the opaque cover 5 is provided with a translucent region 6, through which light from the compact fluorescent tube may pass.
  • the opaque cover 5 is attached to the lampshade 3 by locating holes 8, provided in the cover 5, over studs 7 moulded into the mounting plate 21 and the light fitting 9 (see Figure 2).
  • studs 7 are spaced equally around the circumferences of each of the mounting plate 21 and the light fitting 9.
  • the light fitting 9 is provided inside the lampshade 3 and is fitted with a compact fluorescent tube 11.
  • a mechanical dimmer 15 is attached to the lampshade 3 by the studs 7 provided on the mounting plate 21.
  • the dimmer 15 comprises a filter 19, the mounting plate 21 and an actuating mechanism 23.
  • the actuating mechanism 23 comprises a control wheel 25, an engagement means 27, a guide member 29, a rotor 31 and a stator 33.
  • the filter 19 is in the form of an open-ended cylinder, i.e. it is tubular with a circular cross-sectional profile.
  • the engagement means 27 is connected to the control wheel 25 and is provided with a number of recesses (not shown) around its perimeter for engagement with a boss 36 provided on the mounting plate 21.
  • the engagement means 27 passes through the mounting plate 21 and through the base of the guide member 29.
  • the guide member 29 is fixed to the underside of the mounting plate 21. After passing through the guide member 29, the engagement means 27 engages with the base of the rotor 31. Once engaged the rotor 31 rotates with the engagement means 27.
  • the rotor 31 extends perpendicularly from the base of the guide member 29 and parallel to two guide slots 35 provided on the guide member 29.
  • the rotor 31 engages with a stator 33 that is provided with two cut-outs 37, 39 the shapes of which are complementary to helical threads 41, 43 provided on the rotor 31.
  • Cut-out 37 engages with one of the helical threads 41, 43 provided on the rotor 31.
  • Recess 39 engages with the other of the helical threads 41, 43 provided on the rotor 31.
  • the stator 33 is also provided with two opposed bosses 45 for engagement with the guide slots 35 and guide member 29.
  • the filter 19 is attached to the stator 33.
  • the control wheel 25 To move the filter 19 relative to the mounting plate 21 the control wheel 25 is rotated.
  • the engagement means 27, attached to the control wheel 25, also rotates causing the rotor 31 to rotate.
  • the rotor 31 rotates the helical thread 41, 43 passes through the cut-outs 37, 39 of the stator 33 causing the stator 33 and the filter 19 attached to it to move relative to the rotor 31.
  • the preferred embodiment of the present invention is configured so that clockwise rotation of the control wheel 25 lowers the filter 19, shown in Figure 7 as rotation in direction A, and so that anti-clockwise rotation of the control wheel 25 raises the filter 19, shown in Figure 8 as rotation in direction B.
  • the dimmer 15 is positioned relative to the light fitting 9 so that when the filter 19 is in a raised position no part of the compact fluorescent tube 11 is contained with the filter 19 and that when the filter 19 is in a lowered position the whole of the compact fluorescent tube 11 is covered.
  • the filter 19 is made from a tinted translucent material in order to reduce the transmissibility of the light passing through it.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
EP05256310A 2004-10-11 2005-10-11 Ein mechanischer Dimmer für eine Leuchte Withdrawn EP1645796A3 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05256310A EP1645796A3 (de) 2004-10-11 2005-10-11 Ein mechanischer Dimmer für eine Leuchte

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04256275A EP1522787A3 (de) 2003-10-09 2004-10-11 Halterung für einen Lampenschirm
GB0425182A GB2418979B (en) 2004-10-11 2004-11-15 A mechanical dimmer for a luminaire
EP05256310A EP1645796A3 (de) 2004-10-11 2005-10-11 Ein mechanischer Dimmer für eine Leuchte

Publications (2)

Publication Number Publication Date
EP1645796A2 true EP1645796A2 (de) 2006-04-12
EP1645796A3 EP1645796A3 (de) 2008-07-16

Family

ID=35427563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05256310A Withdrawn EP1645796A3 (de) 2004-10-11 2005-10-11 Ein mechanischer Dimmer für eine Leuchte

Country Status (1)

Country Link
EP (1) EP1645796A3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7862208B2 (en) 2006-04-28 2011-01-04 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Dimming device for a searchlight
CN105042398A (zh) * 2015-07-23 2015-11-11 中山市优米照明科技有限公司 一种可自动调节亮度的led台灯

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1042496B (de) * 1951-11-26 1958-11-06 Jean Henri Blin Vorrichtung zum Beleuchten einer chirurgischen Operationsstelle
DE19740592A1 (de) * 1997-09-15 1999-03-18 Soanca Pollak Georg Leuchte sowie Verfahren zur Erzeugung eines Lichts mit regelbarem Farbton
US6575577B2 (en) * 2001-10-05 2003-06-10 Richard S. Beliveau Multiple light valve lighting device or apparatus with wide color palette and improved contrast ratio
US6796685B1 (en) * 2002-02-13 2004-09-28 Bruce Industries, Inc. Variable color lighting with linear fluorescent lamps
GB0213550D0 (en) * 2002-06-13 2002-07-24 Tillotson Robert H Light fitting

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7862208B2 (en) 2006-04-28 2011-01-04 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Dimming device for a searchlight
CN105042398A (zh) * 2015-07-23 2015-11-11 中山市优米照明科技有限公司 一种可自动调节亮度的led台灯

Also Published As

Publication number Publication date
EP1645796A3 (de) 2008-07-16

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