EP1170545A2 - Guide de lumière en forme de barre - Google Patents

Guide de lumière en forme de barre Download PDF

Info

Publication number
EP1170545A2
EP1170545A2 EP01116157A EP01116157A EP1170545A2 EP 1170545 A2 EP1170545 A2 EP 1170545A2 EP 01116157 A EP01116157 A EP 01116157A EP 01116157 A EP01116157 A EP 01116157A EP 1170545 A2 EP1170545 A2 EP 1170545A2
Authority
EP
European Patent Office
Prior art keywords
light
rod
light guide
longitudinal axis
guide according
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.)
Granted
Application number
EP01116157A
Other languages
German (de)
English (en)
Other versions
EP1170545A3 (fr
EP1170545B1 (fr
Inventor
Cornelius Neumann
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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
Application filed by Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP1170545A2 publication Critical patent/EP1170545A2/fr
Publication of EP1170545A3 publication Critical patent/EP1170545A3/fr
Application granted granted Critical
Publication of EP1170545B1 publication Critical patent/EP1170545B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces

Definitions

  • the invention relates to a rod-shaped light guide, in particular for a signal lamp for motor vehicles, consisting of a rod body with at least a light coupling surface and one arranged in the direction of a longitudinal axis, transversely to the longitudinal axis emitting light exit surface, one of the Light exit surface opposite reflecting surface with light deflecting Means that light coupled in via the light coupling surface Emit light exit surface, and with two opposite side surfaces, the light entry surface and the reflecting surface with each other connect.
  • Rod-shaped light guides are used in motor vehicles, for. B. as a signal lamp or used to illuminate display devices.
  • DE 41 29 094 A1 and DE 198 03 518 A1 are rod-shaped Light guides which have a light exit surface radiating transversely to their longitudinal direction exhibit. Are each opposite the light exit surfaces reflective surfaces arranged. The reflective surfaces have a Large number of prisms on the transverse axis of the rod-shaped light guide are arranged. Connect two opposite sides the light entry surface and the reflecting surface with each other. The two Side faces lie on a common diameter, so the cross section the rod-shaped light guide essentially, d. H. with the exception of reflecting surface, is circular.
  • a disadvantage of the known light guides with essentially circular Cross-section is that due to their point-symmetrical structure only a part of the light coupled into the light guide a point or little diffuse emitting light source via the prisms and the light exit surface becomes. If the reflective surface is opposite in the horizontal direction The surface and light exit surface is the optical one, particularly in the vertical direction Efficiency undesirably low.
  • the object of the present invention is therefore the known rod-shaped To improve fiber optics so that the ratio of coupled to uncoupled Light improves and an increase in efficiency at the same time vertical concentration of light distribution is achieved.
  • This task is inventively in connection with the preamble of Claim 1 solved in that the side surfaces in transverse to the longitudinal axis arranged cross section of the rod body at least two light-concentrating Form points so that non-centric focal lines parallel to the longitudinal axis arise on which the light-concentrating points of the associated side surfaces are arranged.
  • the focal lines formed are the optical efficiency of the rod-shaped Optical fiber significantly improved.
  • the vertical light distribution concentrated in one axis compared to the known light guides.
  • the non-centric focal lines created in the rod-shaped light guide the coupled light is scattered and distributed more favorably for decoupling. This allows the otherwise unusable light to be coupled out and increases so the optical efficiency.
  • With the present invention it is possible to reduce the vertical scatter and thus concentrate the light distribution. This enables higher light intensities to be achieved.
  • the cross section is of the rod body is essentially elliptical.
  • oppositely arranged reflecting surface and light exit surface is a first light-concentrating point in the vertical direction above one center lying on the longitudinal axis and a second light-concentrating one Point located below the center.
  • the light-concentrating points or focal points create inside of the rod body two non-centric focal lines, which the centrically coupled Diffuse light and direct it onto the reflective surface.
  • the Rod body formed as an ellipsoid, the one arranged transversely to the longitudinal axis Eccentricity is adjusted to the length of the rod body in order to coupling out a lot of light.
  • the eccentricity can also - at least within limits - determine the required vertical spread.
  • a short length of Rod body means a higher eccentricity and vice versa.
  • the light coupling surface is an approximately punctiform light source.
  • the light source is a light emitting diode (LED) or less diffuse emitting light source in the form of an incandescent lamp with an ellipsoid reflector.
  • the light-deflecting means of the reflective surface as a variety of transverse to Prisms arranged along the longitudinal axis.
  • a rod-shaped light guide essentially consists of a rod body 1 with a first face 2, a second face 3, a reflective Surface 4, a light exit surface 5, a first side surface 6 and one second side surface 7.
  • the rod body 1 has at a first end 9 transverse to its longitudinal axis 8 the first end face 2 and at its second end facing away from the first end 9 End 10, the second end face 3.
  • the rod-shaped Light guide or the rod body 1 from the reflecting surface 4 and on its front side 12 opposite the rear side 11 becomes the rod body 1 limited by the light exit surface 5.
  • the reflective surface 4 is over the side surfaces 6, 7 connected to the light exit surface 5.
  • a point-shaped light source 13 is in front of each of the end faces 2, 3.
  • the light source 13 is e.g. B. formed as a photodiode (LED).
  • the end faces 2, 3 are designed as light coupling surfaces.
  • the reflective surface 4 has light-deflecting means which, for. B. are formed as a plurality of arranged across the longitudinal axis 8 prisms 14.
  • the side surfaces 6, 7 are convexly shaped towards the outside and form an essentially elliptical cross section of the rod body 1. From the first side surface 6 lying above in the example, a first light-concentrating point (F 1 ) 15 becomes above the center point 16 lying on the longitudinal axis 8 educated.
  • a second light-concentrating point 17 is formed by the second side surface 7 below the center point 16.
  • the center point 16 acts as a third light-concentrating point 18.
  • the rod body 1 is thus designed as an ellipsoid, the first light-concentrating points 15 of which form a first focal line 19 and the second light-concentrating points 17 form a second focal line 20.
  • the focal lines 19, 20 run at a distance parallel to a third focal line 21 formed by the center points 16, which coincides with the longitudinal axis 8.
  • the eccentricity of the ellipsoid or the rod body 1, which is transverse to the longitudinal axis 8 is arranged, is adapted to the length of the rod body 1, if possible coupling out a lot of light.
  • the eccentricity is also within certain limits adapted to the required vertical spread.
  • the light emitted by the light sources 13 is transmitted via the end faces 2, 3, which are designed as light coupling surfaces, are coupled into the rod body 1 and passed on through total reflection.
  • the prisms 14 of the reflective Surface 4 incident light is reflected and occurs on the prisms 14th opposite light exit surface 5. Not covered by prisms 14 Light rays are reflected on the side surfaces 6, 7 and to the Focal lines 19, 20, 21 concentrated.
  • FIG. 3 shows, by way of example, the course of some light rays until they strike the prisms 14 are shown in a cross-sectional projection. Points 15, 16, 17 form three "light focal points" over which the often reflected light is directed onto the prisms 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP01116157A 2000-07-07 2001-07-04 Guide de lumière en forme de barre Expired - Lifetime EP1170545B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10033133A DE10033133A1 (de) 2000-07-07 2000-07-07 Stabförmiger Lichtleiter
DE10033133 2000-07-07

Publications (3)

Publication Number Publication Date
EP1170545A2 true EP1170545A2 (fr) 2002-01-09
EP1170545A3 EP1170545A3 (fr) 2003-03-05
EP1170545B1 EP1170545B1 (fr) 2004-10-06

Family

ID=7648181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01116157A Expired - Lifetime EP1170545B1 (fr) 2000-07-07 2001-07-04 Guide de lumière en forme de barre

Country Status (3)

Country Link
EP (1) EP1170545B1 (fr)
DE (2) DE10033133A1 (fr)
ES (1) ES2228703T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8333493B2 (en) 2009-04-03 2012-12-18 North American Lighting, Inc. Dual-direction light pipe for automotive lighting
CN108349560A (zh) * 2015-07-29 2018-07-31 卡尔邦动力有限公司 用于自行车的可安装至车把的灯管装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005047793A1 (de) * 2005-10-05 2007-04-12 Hella Kgaa Hueck & Co. Beleuchtungseinrichtung für ein Kraftfahrzeug
US7695179B2 (en) 2007-03-16 2010-04-13 Visteon Global Technologies, Inc. Illuminating device
DE102007023076B4 (de) 2007-05-16 2012-02-16 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung für Kraftfahrzeuge
US7639918B2 (en) 2008-05-05 2009-12-29 Visteon Global Technologies, Inc. Manifold-type lightguide with reduced thickness
US10838137B2 (en) 2017-08-29 2020-11-17 Varroc Lighting Systems, s.r.o. Lighting device with high efficiency and uniformity

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129094A1 (de) 1991-09-02 1993-03-04 Hella Kg Hueck & Co Signalleuchte fuer kraftfahrzeuge
DE19803518A1 (de) 1998-01-30 1999-08-05 Hella Kg Hueck & Co Stabförmiger Lichtleiter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0638626B2 (ja) * 1985-12-17 1994-05-18 工業技術院長 光源ユニット
DE4117278A1 (de) * 1991-05-27 1992-12-03 Hella Kg Hueck & Co Innenleuchte fuer kraftfahrzeuge
US5339382A (en) * 1993-02-23 1994-08-16 Minnesota Mining And Manufacturing Company Prism light guide luminaire with efficient directional output
AU715687B2 (en) * 1996-01-19 2000-02-10 Lumenyte International Corporation Side lighting optical conduit
JPH09325221A (ja) * 1996-04-04 1997-12-16 Hitachi Cable Ltd 照明装置
DE19740265A1 (de) * 1997-09-12 1999-03-18 Willing Gmbh Dr Ing Seitlich lichtabstrahlender Lichtleiter
DE19857561A1 (de) * 1998-12-14 2000-06-21 Valeo Beleuchtung Deutschland Leuchte, insbesondere für Kraftfahrzeuge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129094A1 (de) 1991-09-02 1993-03-04 Hella Kg Hueck & Co Signalleuchte fuer kraftfahrzeuge
DE19803518A1 (de) 1998-01-30 1999-08-05 Hella Kg Hueck & Co Stabförmiger Lichtleiter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8333493B2 (en) 2009-04-03 2012-12-18 North American Lighting, Inc. Dual-direction light pipe for automotive lighting
CN108349560A (zh) * 2015-07-29 2018-07-31 卡尔邦动力有限公司 用于自行车的可安装至车把的灯管装置

Also Published As

Publication number Publication date
EP1170545A3 (fr) 2003-03-05
DE10033133A1 (de) 2002-01-17
ES2228703T3 (es) 2005-04-16
DE50103947D1 (de) 2004-11-11
EP1170545B1 (fr) 2004-10-06

Similar Documents

Publication Publication Date Title
EP0933587B1 (fr) Guide de lumière en forme de barre
EP2354637B1 (fr) Dispositif d'éclairage pour véhicules
DE19908961A1 (de) Leuchte, insbesondere für Kraftfahrzeuge
EP1491815B1 (fr) Dispositif d'éclairage pour véhicule
EP1055867B1 (fr) Guide de lumière en forme de barre
EP1225385A2 (fr) Lampe, notamment feu de signalisation pour véhicules
EP0933588A2 (fr) Feu pour véhicule
EP1154198B1 (fr) Guide de lumière en forme de barre
DE102006008191B4 (de) Leuchteneinheit für Fahrzeuge
EP3531012A1 (fr) Dispositif d'éclairage pour véhicules automobiles pourvu de guide de lumière allongé
EP0936403B1 (fr) Dispositif d'éclairage pour des véhicules automobiles.
DE19857561A1 (de) Leuchte, insbesondere für Kraftfahrzeuge
EP1170545B1 (fr) Guide de lumière en forme de barre
EP3158260B1 (fr) Dispositif d'éclairage de véhicule automobile
EP2269901B1 (fr) Feu arrière en forme de barre d'un deux roues
DE10332977A1 (de) Fahrzeugleuchte
DE102012112125A1 (de) Beleuchtungsvorrichtung für Fahrzeuge
DE15161206T1 (de) Vorrichtung zur Beleuchtung und/oder Signalisierung mit optischem Lichtwellenleiter
EP1176359A2 (fr) Feu pour véhicule
DE102005035063A1 (de) Beleuchtungsvorrichtung für Kraftfahrzeuge
DE102006008199B4 (de) Leuchteneinheit für Fahrzeuge
DE10317062A1 (de) Beleuchtungseinrichtung für Kraftfahrzeuge
EP1832902A1 (fr) Dispositif de lampe plate
EP1610157A1 (fr) Système d'éclairage pour un véhicule comprenant un guide de lumière linéaire
DE102010001266B4 (de) Anordnung zur Lichtabgabe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7F 21W 101:14 Z

Ipc: 7F 21W 101:12 Z

Ipc: 7F 21V 8/00 B

Ipc: 7F 21S 8/10 A

17P Request for examination filed

Effective date: 20030902

AKX Designation fees paid

Designated state(s): DE ES FR IT

17Q First examination report despatched

Effective date: 20031210

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR IT

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50103947

Country of ref document: DE

Date of ref document: 20041111

Kind code of ref document: P

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: HELLA KGAA HUECK & CO.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2228703

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ET Fr: translation filed
26N No opposition filed

Effective date: 20050707

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20080821

Year of fee payment: 8

Ref country code: DE

Payment date: 20080711

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20080730

Year of fee payment: 8

Ref country code: FR

Payment date: 20080718

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100202

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090706

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090706

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090704