WO2001002775A1 - Lamp structure - Google Patents
Lamp structure Download PDFInfo
- Publication number
- WO2001002775A1 WO2001002775A1 PCT/FI1999/000584 FI9900584W WO0102775A1 WO 2001002775 A1 WO2001002775 A1 WO 2001002775A1 FI 9900584 W FI9900584 W FI 9900584W WO 0102775 A1 WO0102775 A1 WO 0102775A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical conductor
- lighting apparatus
- light
- light source
- conductor
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
- G02B6/0008—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted at the end of the fibre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
- B60Q3/40—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors specially adapted for specific vehicle types
- B60Q3/41—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors specially adapted for specific vehicle types for mass transit vehicles, e.g. buses
- B60Q3/44—Spotlighting, e.g. reading lamps
-
- 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
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
-
- 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
-
- 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
- F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D2011/0053—Cabin passenger reading lights
Definitions
- the invention relates to lighting apparatus, more particularly to directable, small- sized lighting apparatus.
- FIG. 1 shows a cross-section of a prior art solution for implementing small, directable light sources. Lighting devices of this kind are very commonly used in coaches and airplanes, for instance.
- the construction comprises a globular lamp 1, which is attached to a wall 2 with fasteners 2' so that the lamp can be turned.
- the lamp 1 comprises a bulb 3 and a reflector 4, and the light is conducted out from the lamp through a collar 5 and a front glass 6, which are typical parts of the construction.
- the directability of the light beam is limited in extreme positions by the fact that the collar 5 and the fasteners 2' touch each other. In constructions without a protruding collar 5, the fasteners or the wall shade the emitting beam. These factors limit the directability of the construction, which is typically about ⁇ 30° to the wall from the perpendicular direction. Heat is also a problem in a structure like this, because the bulb 3 warms the turnable lamp 1. Thereby the collar 5 and the front glass 6 also warm up considerably, which is uncomfortable for the user. Another problem is the fatigue of the conductors 8 caused by moving the lamp. In time, the conductors 8 break easily, especially if tin lamp 1 is turned around its central axis ranning through the bulb 3. Therefore, turning the lamp around its central axis has been prevented in many solutions.
- the invention aims at providing lighting apparatus according to the aforementioned objects, which is also more durable that the prior art solutions.
- the objects are achieved by using a rigid optical conductor for directing the light, which optical conductor is articulated to the lighting apparatus by means of a sleeve bearing, for instance.
- the optical conductor can be, for instance, a transparent plastic rod, the sides of which are coated with a metal layer, but other solutions for the optical conductor are also possible.
- the light source is attached to the lighting apparatus in a stationary manner.
- the light beam of the lighting apparatus is directed only by means of the optical conductor, and the light source does not move as a result of the adjustment.
- a construction like this provides versatile directabiHty of the light beam and a longer service life of the light source compared to the prior art solutions.
- the lighting apparatus comprises a movable optical conductor and a filament or halogen bulb or other light source installed as stationary.
- the optical conductor is articulated to the lighting apparatus preferably by means of a sleeve bearing, for instance, or by other means so that the position of the optical conductor in relation to the lighting apparatus and the fastening surface of the lighting apparatus can be changed freely.
- the optical conductor does not touch the light source.
- the optical conductor can preferably also be attached in a manner which allows nirning it around its central axis.
- the light source is an essentially rigid, non- flexible piece.
- the light beam formed by the lighting apparatus is directed by means of the optical conductor, whereby the mechanical stress caused by directing the beam does not affect the light source. Because the optical conductor and the light source are separate, and the light source is not within the optical conductor, the optical conductor does not warm up considerably, whereby handling it is comfortable for the user.
- the end of the optical conductor which is in the vicinity of the light source, is in this application called the inner end for clarity, and correspondingly the end of the conductor, which protrudes from the lighting apparatus and can be touched by the user, is called the outer end.
- the outer end of the optical conductor can preferably be shaped so as to achieve the desired shape and direction of the light beam.
- the outer end of the optical conductor can be shaped as a diagonally cut cylinder, for instance, whereby the diagonal cutting directs the beam at the desired angle to the optical conductor.
- the light beam can be directed in a very versatile fashion by turning the optical conductor around its longitudinal axis and by turning the optical conductor in different positions in relation to the lighting apparatus and the fastening surface of the lighting apparatus.
- the light of the light source is directed to the inner end of the optical conductor.
- the side surfaces of the optical conductor reflect the light directed at the inner end of the optical conductor, whereby light is emitted from the outer end of the optical conductor.
- the width, intensity distribution and angle to the optical conductor of the light beam e ⁇ iitting from the outer end can be varied by the dimensioning of the optical conductor and its distance from the light source.
- the light source can be implemented so that light is reflected from the side walls of the optical conductor by total reflection.
- the side walls of the optical conductor can also be coated with a reflective layer.
- the inner end of the optical conductor can preferably be coated with a layer which reflects infrared radiation but passes visible light, if the optical conductor is made of solid material or if there is a lens at the inner end of the optical conductor. It is also possible to install a light-passing plate, such as a glass or plastic plate on which a layer like i_i has been formed, at the inner end of the optical conductor.
- a lighting apparatus is especially suitable for use in applications in which light should be freely targetable and in which the direction should be steplessly directable in a very wide area, as much as ⁇ 90°.
- the optical conductor is preferably a solid, transparent glass or plastic rod, the side surfaces of which are coated with a reflective layer, e.g. an aluminium layer.
- Suitable materials include all transparent plastics, such as acrylic plastics, polystyrene plastics, polycarbonate plastics and different types of glass.
- the invention is not limited to this, but the optical conductor can also be a tubular piece with its inner or outer surface coated with a reflective layer.
- the optical conductor can also be formed by a tubular piece made on non-transparent material, the inner surface of which reflects light.
- the optical conductor can be made of a metal tube with a polished inner surface, for instance.
- the ends of the optical conductor can be provided with various lenses, prisms or other kinds of refractive elements to form the desired shape of the lighting spot. If the optical conductor is made of solid material, its end can be shaped as the desired refractive element, and if the optical conductor is made of tubular material, an element like this can be attached to the end of the optical conductor in a known manner, such as gluing.
- Figure 1 shows a prior art lighting apparatus
- Figure 2 shows a lighting apparatus according to a preferred embodiment of the invention
- Figure 3 shows a lighting apparatus according to a preferred embodiment of the invention, in which the optical conductor can be moved in the direction of its longitudinal axis
- Figure 4 shows examples of various shapes of the optical conductor used in different embodiments of the invention.
- Figure 5 shows the construction of a preferred embodiment of the invention
- Figure 2 shows a preferred embodiment of the invention.
- the embodiment shown in Figure 2 is suitable for fastening to an essentially horizontal wall 2, such as the surface above the place of a passenger in a coach or airplane.
- Figure 2 shows a bulb
- FIG. 1 illustrates a preferred embodiment of the invention, in which the end of the optical conductor 10 is cut diagonally for directing the beam in a direction differing from the longitudinal axis of the optical conductor.
- Figure 3 illustrates a preferred embodiment of the invention, in which the optical conductor 10 is fastened in such a manner that it can be moved in the direction of its longitudinal axis.
- a construction like this can be implemented e.g. so that the optical conductor 10 can move in relation to a sleeve 11.
- the inner position in which the optical conductor 10 is close to the light source 3, 4, the light beam coming from the outer end of the optical conductor is very wide.
- the outer position in which the inner end of the optical conductor 10 is further from the light source 3, 4, the light beam coming from the outer end of the optical conductor is narrower than in the inner position.
- the outer end of the optical conductor is diagonally shaped, as in the example of Figure 2, this positioning in the axial direction also influences, besides the width of the emitting light beam, the angle between the emitting light beam and the longitudinal axis of the optical conduct » ⁇ which angle is the larger the closer the inner end of the optical conductor is to the light source 3, 4.
- the movement of the optical conductor is limited to prevent it from touching the light source 3, 4 and from slipping out from the sleeve 11.
- the optical conductor 10 is straight. However, the invention is not limited to this, but the optical conductor can also have another shape, e.g. curved, according to the desired appearance.
- the cross-section of the optical conductor is preferably circular, but other shapes, such as triangular, are also possible.
- the shape of the sleeve 11 must correspond to the shape of the optical conductor 10 in each embodiment.
- the tumability of the optical conductor around its longitudinal axis is preferably implemented by the tumability of the sleeve 11.
- the dimensions of the optical conductor 10, such as its thickness and length, can be selected according to the application in question, and the invention is not limited to certain dimensions or relations between dimensions.
- Figure 4 illustrates some shapes of the optical conductor 10, which are suitable for a lighting apparatus according to the invention.
- the component figures A, B, C and D show axial sections of four optical conductors 10 with different shapes.
- the light reflecting areas 12 are drawn with a double line and the light passing areas are drawn with a single line.
- the areas 12 in Figure 4 represent areas coated with a reflective layer.
- the optical conductor with a diagonally cut end shown in the component figure A directs the light beam askew, as shown by the arrows drawn with a dotted line.
- the optical conductor of the component figure B in which part of the skew surface reflects light, directs the light beam more strongly askew.
- the skew portion reflects light, whereby the optical conductor 10 directs the light in an essentially perpendicular angle to the longitudinal axis.
- the component figure D illustrates the use of a refractive element 13 at the end of the optical conductor.
- the refractive element is a lens at the outer end of the optical conductor, which lens is formed by the shaping of the end of the solid optical conductor.
- the component figure D is only an example of a light refracting element, and the invention is not limited to the example shown.
- the light refracting element can also be formed at the inner end of the optical conductor, and it can be some other element than a lens.
- the element 13 can be e.g.
- Figure 5 illustrates a preferred application of the invention, namely a combined general and spot lighting apparatus attached to a wall 23.
- the construction according to Figure 5 is suitable for use in bedrooms, hotel rooms and ship cabins.
- the lighting solution shown in Figure 5 comprises a general light 21 and a shade 22, and an directable spot light 3, 4, 10 according to the invention, implemented in the same construction.
- the general light 21 can be a filament lamp, a fluorescent tube or other known lighting apparatus.
- the lighting solution according to Figure 5 can be used as general lighting in the room. If a person in the room wants to sleep, the general light 21 can be switched off, whereby the directable spotlamp 3, 4, 10, 11 can be used as reading light without any notable disturbance caused to the person who is sleeping.
- the constructions related to the electric wires and light switches have been left out from Figure 5.
- the construction according to the invention enables a very wide area of directability for the light.
- the optical conductor in a preferred embodiment of the invention in which the optical conductor is made of plastic, the optical conductor is not essentially heated, whereby it can be comfortably turned with bare hands.
- the electric wires 8 of the light source 3, 4 are not susceptible to fatigue and are not easily broken, because the light source 3, 4 if installed as stationary. Because of stationary installation, the ventilation possibly needed by the light source 3, 4 is easier to implement than in the prior art solutions according to Figure 1.
- the moving parts 10, 11 are not as susceptible to the warming effect of the light source 3, 4 as in the known constructions like the one shown in Figure 1.
- the lighting apparatus according to the invention has the advantage of simple and low- cost construction.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU50396/99A AU5039699A (en) | 1999-07-01 | 1999-07-01 | Lamp structure |
PCT/FI1999/000584 WO2001002775A1 (en) | 1999-07-01 | 1999-07-01 | Lamp structure |
EP99934729A EP1200775A1 (en) | 1999-07-01 | 1999-07-01 | Lamp structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FI1999/000584 WO2001002775A1 (en) | 1999-07-01 | 1999-07-01 | Lamp structure |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001002775A1 true WO2001002775A1 (en) | 2001-01-11 |
Family
ID=8556755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1999/000584 WO2001002775A1 (en) | 1999-07-01 | 1999-07-01 | Lamp structure |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1200775A1 (en) |
AU (1) | AU5039699A (en) |
WO (1) | WO2001002775A1 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10307147A1 (en) * | 2003-02-20 | 2004-09-23 | Airbus Deutschland Gmbh | Reading light for aircraft cabins |
DE102006021612A1 (en) * | 2006-05-09 | 2007-11-15 | Siemens Ag | Vehicle interior light for entrance light and reading light, has lighting device and light, which is fixed in vehicle with help of lighting device |
DE102006058870A1 (en) * | 2006-12-07 | 2008-07-03 | Recaro Aircraft Seating Gmbh & Co. Kg | Lighting device, in particular reading lamp |
EP1995513A1 (en) * | 2007-05-22 | 2008-11-26 | Goodrich Lighting Systems GmbH | Method for mounting an LED |
US7987082B2 (en) | 2004-04-19 | 2011-07-26 | Invensys Systems, Inc. | System and method for efficient computation of simulated thermodynamic property and phase equilibrium characteristics using comprehensive local property models |
DE102010023811A1 (en) * | 2010-06-15 | 2011-12-15 | Audi Ag | Device for illuminating inner space of motor car to search for objects by passengers, has planar, reading and ring shaped lighting devices modularly designed and provided with LEDs as light sources for producing different colors |
US20200132278A1 (en) * | 2018-10-30 | 2020-04-30 | Troy-CSL Lighting Inc. | Adjustable optic and lighting device assembly |
US10760782B2 (en) | 2018-12-19 | 2020-09-01 | Troy-CSL Lighting Inc. | Adjustable optic and lighting device assembly with elastic member |
US10837610B2 (en) | 2017-11-30 | 2020-11-17 | Troy-CSL Lighting Inc. | Adjustable optic and lighting device assembly |
US10976031B2 (en) | 2019-06-11 | 2021-04-13 | Troy-CSL Lighting Inc. | Adjustable lighting device with base connector |
US11015794B2 (en) | 2019-06-11 | 2021-05-25 | Troy-CSL Lighting Inc. | Adjustable lighting device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1639753A (en) * | 1925-11-28 | 1927-08-23 | William G Shelton | Hair drier and therapeutic lamp |
DE4338841A1 (en) * | 1993-11-13 | 1995-05-18 | Axel Dickmann | Lamp pref. for low voltage halogen bulb |
US5672004A (en) * | 1996-09-03 | 1997-09-30 | Imo Industries, Inc. | Lighting apparatus and related method |
DE19615639A1 (en) * | 1996-04-21 | 1997-10-23 | Acl Lichttechnik Gmbh | Recess light fitting |
-
1999
- 1999-07-01 WO PCT/FI1999/000584 patent/WO2001002775A1/en not_active Application Discontinuation
- 1999-07-01 EP EP99934729A patent/EP1200775A1/en not_active Withdrawn
- 1999-07-01 AU AU50396/99A patent/AU5039699A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1639753A (en) * | 1925-11-28 | 1927-08-23 | William G Shelton | Hair drier and therapeutic lamp |
DE4338841A1 (en) * | 1993-11-13 | 1995-05-18 | Axel Dickmann | Lamp pref. for low voltage halogen bulb |
DE19615639A1 (en) * | 1996-04-21 | 1997-10-23 | Acl Lichttechnik Gmbh | Recess light fitting |
US5672004A (en) * | 1996-09-03 | 1997-09-30 | Imo Industries, Inc. | Lighting apparatus and related method |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10307147A1 (en) * | 2003-02-20 | 2004-09-23 | Airbus Deutschland Gmbh | Reading light for aircraft cabins |
US7150548B2 (en) | 2003-02-20 | 2006-12-19 | Airbus Deutschland Gmbh | Reading lamp for aircraft cabins |
US7987082B2 (en) | 2004-04-19 | 2011-07-26 | Invensys Systems, Inc. | System and method for efficient computation of simulated thermodynamic property and phase equilibrium characteristics using comprehensive local property models |
DE102006021612A1 (en) * | 2006-05-09 | 2007-11-15 | Siemens Ag | Vehicle interior light for entrance light and reading light, has lighting device and light, which is fixed in vehicle with help of lighting device |
DE102006058870A1 (en) * | 2006-12-07 | 2008-07-03 | Recaro Aircraft Seating Gmbh & Co. Kg | Lighting device, in particular reading lamp |
DE102006058870B4 (en) * | 2006-12-07 | 2008-10-02 | Recaro Aircraft Seating Gmbh & Co. Kg | Lighting device, in particular reading lamp |
EP1995513A1 (en) * | 2007-05-22 | 2008-11-26 | Goodrich Lighting Systems GmbH | Method for mounting an LED |
US8006376B2 (en) | 2007-05-22 | 2011-08-30 | Goodrich Lighting Systems Gmbh | Method for assembly of an LED light |
DE102010023811A1 (en) * | 2010-06-15 | 2011-12-15 | Audi Ag | Device for illuminating inner space of motor car to search for objects by passengers, has planar, reading and ring shaped lighting devices modularly designed and provided with LEDs as light sources for producing different colors |
DE102010023811B4 (en) * | 2010-06-15 | 2012-12-20 | Audi Ag | Lighting device for the interior of a motor vehicle |
US10837610B2 (en) | 2017-11-30 | 2020-11-17 | Troy-CSL Lighting Inc. | Adjustable optic and lighting device assembly |
US20200132278A1 (en) * | 2018-10-30 | 2020-04-30 | Troy-CSL Lighting Inc. | Adjustable optic and lighting device assembly |
US10955112B2 (en) * | 2018-10-30 | 2021-03-23 | Troy-Csl Lighting, Inc. | Adjustable optic and lighting device assembly |
US10760782B2 (en) | 2018-12-19 | 2020-09-01 | Troy-CSL Lighting Inc. | Adjustable optic and lighting device assembly with elastic member |
US11022293B2 (en) | 2018-12-19 | 2021-06-01 | Troy-CSL Lighting Inc. | Adjustable optic and lighting device assembly with elastic member |
US10976031B2 (en) | 2019-06-11 | 2021-04-13 | Troy-CSL Lighting Inc. | Adjustable lighting device with base connector |
US11015794B2 (en) | 2019-06-11 | 2021-05-25 | Troy-CSL Lighting Inc. | Adjustable lighting device |
Also Published As
Publication number | Publication date |
---|---|
AU5039699A (en) | 2001-01-22 |
EP1200775A1 (en) | 2002-05-02 |
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