EP1925875A1 - Lampe retrofit à LED pour dispositif de signalisation automobile - Google Patents

Lampe retrofit à LED pour dispositif de signalisation automobile Download PDF

Info

Publication number
EP1925875A1
EP1925875A1 EP06425800A EP06425800A EP1925875A1 EP 1925875 A1 EP1925875 A1 EP 1925875A1 EP 06425800 A EP06425800 A EP 06425800A EP 06425800 A EP06425800 A EP 06425800A EP 1925875 A1 EP1925875 A1 EP 1925875A1
Authority
EP
European Patent Office
Prior art keywords
led
lamp
illuminator
mount
contact
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Withdrawn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
EP06425800A
Other languages
German (de)
English (en)
Inventor
Andrea Ferraris
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.)
Eurolites SpA
Original Assignee
Eurolites SpA
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 Eurolites SpA filed Critical Eurolites SpA
Priority to EP06425800A priority Critical patent/EP1925875A1/fr
Publication of EP1925875A1 publication Critical patent/EP1925875A1/fr
Withdrawn legal-status Critical Current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
    • F21S43/10—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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a LED-based lamp for vehicle signaling lights, such as tail lights, stop lights, turn indicator lights, and the like.
  • the vehicle signaling lights tipically comprise a box-shaped housing made of plastics and provided with one or more recesses each having an incandescent lamp received therein.
  • the recesses are closed by a mask of a translucent material which may be differently coloured depending on the specific function of the light.
  • the recesses each are internally provided with a parabolic reflector for deviating the light beams from the lamp into the desired direction, i.e., towards the mask.
  • incendescent lamps As known, a drawback of the incendescent lamps is that they have a limited life, which circumstance both leads to relatively frequent replacements and affects the safety of the vehicle, mainly in consideration of the fact that a certain time can pass before the driver notices the fault and replaces the lamp.
  • incandescent lamps Another well known drawback of the incandescent lamps is that, in case of long stops with the lights on, without the ventilation deriving from the movement of the vehicle, they may cause a partial melting of the reflector. This drawback is particularly relevant in old vehicles, in which the lights were designed for standing relatively short stops, typically of about one hour, on the basis of obsolete standards.
  • the above drawbacks lead to provide the most recent vehicles with signaling lights having LED-based lamps installed in lieu of conventional incandescent lamps.
  • the LED-based lamps generally comprise a printed circuit board bearing a plurality of LEDs (light emitting diode) arranged, and in number, such as to meet the desired requirements of brilliancy.
  • the LED-based lamps overcome the above drawbacks of the incandescent lamps because they have a high reliability, with a substantially unlimited life in relation to the mean-life of a vehicle, as well as a very low operative temperature.
  • the LED-based lamps due to the high number of LEDs mounted on the board, even if a diode broke down (which event is very rare per se) however the remaining LEDs would provide a sufficient light, so that no replacement would be required.
  • a further advantage of the LED-based lamps is that they have an electrical input that is considerably lower then the input of the conventional incandescent lamps. This circumstance results in a lower consumption, i.e., a higher autonomy, of the battery in case of long stops with the engine in motion and the lights out, which stops may be necessary, for example, in case of long queues on the motorway.
  • a rear signaling light for vehicles generally comprises a box-shaped housing 10 provided with a plurality of side-by-side recesses 12, 14, 16, which are open to a front face of housing 10, which face is closed by a mask 18 made of a translucent material.
  • the recesses each have a parabolic reflecting bottom 20, 22, 24 respectively, at the centre of which a lamp-holding socket or lamp holder 26, 28, 30 is formed, of the type with L-shaped grooves 26a, 28a, 30a suitable for receiving an incandescent lamp 32, 34, 36 provided with a base 32a, 34a, 36a connectable with a bayonet-like action.
  • a first elastic foil 38, 40, 42 radially projects from the bottom of the lamp holder to the inside thereof to contact the insertion end of the base of lamp 32, 34, 36.
  • a second foil (not shown) is incorporated in lamp holder 22 to contact the side wall of the base of the lamp. Both the foils of the lamp holders are connected to the electric supply line of the vehicle, which is conventionally designed, e.g., for generating a voltage of 12V or 24V at the contact ends, with a current of about 1,8 A.
  • a LED-based lamp 44 comprises a hollow metal mount 46 having a circular profile and provided with a cylindrical base 47 for engaging one of the lamp holders 26, 28, 30 with a bayonet-like action - with bosses 48 insertable in grooves 26a, 28a, 30a - and with a cylindrical support end which is larger in diameter and on which a platform 50 is defined for mounting a LED-based illuminator 52, as will be better described below.
  • mount 46 houses two pairs of contact clamps 54a, 54b and 56a, 56b arranged at right angles to each other.
  • the contact clamps are open towards platform 50 and are respectively connected in pairs to a contact pole 58 formed on a boss at the insertion end of base 47, and to the lateral wall of base 47.
  • mount 46 is filled with an insulating resin (not shown for better clarity) in which the contact clamps are immersed.
  • LED-based illuminator 52 comprises a LED-bearing board 60 having a plurality of lighting LEDs such as 62 mounted thereon, which are connected to a pair of contact projections 64a, 64b via a current dissipating circuit (not shown), which is incorporated within LED-bearing board 60 and has the aim of lowering the value of the current to a level which is compatible with the LEDs, e.g., a current of 30 to 80 mA.
  • Contact projections 64a, 64b are insertable by friction into either the first or the second pair of contact clamps, 54a, 54b, or 56a, 56b respectively.
  • LED-bearing board 60 is hermetically closed in a tranparent shell 66 made of plastics, with the sole contact projections 64a, 64b out of the shell.
  • a plurality of lenses 68 are formed on the shell, each of which is aligned to a respective LED for directing and intensifying the light emitted by the LED.
  • LED-based lamp 44 can be installed in one of the recesses of the signaling light in lieu of a conventional incandescent lamp.
  • metal mount 46 is installed into lamp-holder 26 with a bayonet-like, roto-traslatory action (Fig. 5).
  • LED-based illuminator 52 is axially mounted onto mount 46, with contact projections 64a, 64b inserted with friction fit into one of the pairs of clamps 54a, 54b or 56a, 56b (Fig. 6).
  • the two-part construction of the LED-based lamp according to the invention allows the illuminator to be frontally installed into the housing without any rotation. As it will be immediately understood, this allows the LED-based lamp according to the invention to be installed into a pre-existing signaling light even when the the shape of the recess does not allow the lamp to be rotated, which circumstance makes this system very flexible and modular. Furthermore, the presence of two pairs of contact clamps arranged at right angles to each other provides the LED-based lamp with a further degree of modularity, because it allows a plurality of illuminators having different shapes and sizes to be applied on a single type of mount 46.
  • Fig. 7 shows a portion of a rear vehicle signaling light of a conventional type differing from the signaling light of Fig. 1 in that lamp-holder 126 is arranged with its axis parallel to the front face of housing 110, on which face the coloured mask of a translucent material 118 is applied.
  • FIG. 8 An alternative embodiment of the lamp according to the invention is shown in Fig. 8, which is compatible with a signaling light of the type shown in Fig. 7.
  • base 147 of hollow metal mount 146 is bent at right angles whereby, with the mount engaged into lamp-holder 126 of signaling light 110, platform 150 is parallel to mask 118.
  • mount 146 houses two pairs of contact clamps such as 154a, 154b arranged at right angles to each other, the clamps being connected in pairs to the lateral wall of base 147 and to a contact pole 158 which is formed on a boss at the insertion end of base 147.
  • mount 146 is filled with an insulating resin (not shown for better clarity) in which the clamps are immersed.
  • a LED-based illuminator is installable on metal mount 146, which is identical to the illuminator described in the previous embodiment and consequently will not be further described below.
  • first metal mount 146 is installed into lamp-holder 126 with a bayonet-like roto-traslatory action (Fig. 10). Thereafter, the LED-based illuminator is frontally mounted onto mount 146.
  • Figs. 11, 12, 13 are plan views showing three LED-based illuminators whose profiles differ from the rectangular profile of the previous embodiments, i.e., a triangular illuminator 252, a rhomboidal illuminator 352, and an arrow-shaped illuminator 452 respectively.
  • the contact clamps are associated to the mount and the contact projections are associated to the illuminator, this arrangement could be easily reversed, i.e., the mount could be provided with a pair of contact projections and the illuminator could be provided with one or more pairs of contact clamps.
  • the lenses could be made apart from the shell, for example, they could be formed on a transparent plate supported above the LED-bearing board within the shell.
  • certain parts of the above-described LED-based lamp could be not necessary in certain cases.
  • lenses 68 on shell 66 could be not necessary in those cases in which a lower light intensity is required.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP06425800A 2006-11-24 2006-11-24 Lampe retrofit à LED pour dispositif de signalisation automobile Withdrawn EP1925875A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06425800A EP1925875A1 (fr) 2006-11-24 2006-11-24 Lampe retrofit à LED pour dispositif de signalisation automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06425800A EP1925875A1 (fr) 2006-11-24 2006-11-24 Lampe retrofit à LED pour dispositif de signalisation automobile

Publications (1)

Publication Number Publication Date
EP1925875A1 true EP1925875A1 (fr) 2008-05-28

Family

ID=37896082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06425800A Withdrawn EP1925875A1 (fr) 2006-11-24 2006-11-24 Lampe retrofit à LED pour dispositif de signalisation automobile

Country Status (1)

Country Link
EP (1) EP1925875A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632551A (en) * 1994-07-18 1997-05-27 Grote Industries, Inc. LED vehicle lamp assembly
EP0955623A2 (fr) * 1998-05-08 1999-11-10 Leotek Electronics Corporation Lampes rétroadaptables avec diodes électroluminescentes pour panneaux illuminés de signalisation
US20030016536A1 (en) * 2001-07-23 2003-01-23 Meng-Hsin Lin Low-power high-intensity lighting apparatus
DE10343470A1 (de) * 2003-09-19 2005-05-04 Audi Ag Kraftfahrzeugleuchte
US20060028814A1 (en) * 2004-08-05 2006-02-09 Whelen Engineering Company, Inc. Integrated LED warning and vehicle lamp

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632551A (en) * 1994-07-18 1997-05-27 Grote Industries, Inc. LED vehicle lamp assembly
EP0955623A2 (fr) * 1998-05-08 1999-11-10 Leotek Electronics Corporation Lampes rétroadaptables avec diodes électroluminescentes pour panneaux illuminés de signalisation
US20030016536A1 (en) * 2001-07-23 2003-01-23 Meng-Hsin Lin Low-power high-intensity lighting apparatus
DE10343470A1 (de) * 2003-09-19 2005-05-04 Audi Ag Kraftfahrzeugleuchte
US20060028814A1 (en) * 2004-08-05 2006-02-09 Whelen Engineering Company, Inc. Integrated LED warning and vehicle lamp

Similar Documents

Publication Publication Date Title
US20020117692A1 (en) Moisture resistant LED vehicle light bulb assembly
US20130294059A1 (en) Led light fixture
EP2868962B1 (fr) Boîtier d'éclairage avec insert d'éclairage à DEL
US20100290254A1 (en) Led night-light
US20080123359A1 (en) Illuminated display system for a vehicle
KR20110106351A (ko) 엘이디 램프 시스템
JP2017076598A (ja) 面照明パネル及びこれを備えた電源内蔵式の面照明装置
KR20180006329A (ko) 자동차용 조명 수단을 위한 지지체
US20080225547A1 (en) LED vehicle lamp
EP1925875A1 (fr) Lampe retrofit à LED pour dispositif de signalisation automobile
KR20200107513A (ko) 다운라이트형 led 조명장치
KR20120107598A (ko) 엘이디 조명등
EP3141795A1 (fr) Base monolithique de module d'éclairage à del et lampe comportant celle-ci
KR200409283Y1 (ko) 자동차 실내등 전구 접점 단자기능의 관통홈을 갖는 피시비 기판
JPH024404Y2 (fr)
KR20200107515A (ko) 조명모듈 분리형 led 조명장치
EP1002348B1 (fr) Embase destinee principalement aux diodes lumineuses
CN212619638U (zh) 冰箱及其灯具
JP2000200512A (ja) Ｌｅｄランプ
EP3296618A1 (fr) Module source de lumière et dispositif d'éclairage
CN217928466U (zh) 一种柜内照明灯
CN213746263U (zh) 一种灯具
JP2015118858A (ja) 車両用照明装置
JP2011249083A (ja) 照明器具及びそれを用いた照明システム
KR200345345Y1 (ko) 조명용 램프

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: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20081201