EP0457645A2 - Beleuchtungsvorrichtung - Google Patents

Beleuchtungsvorrichtung Download PDF

Info

Publication number
EP0457645A2
EP0457645A2 EP91401168A EP91401168A EP0457645A2 EP 0457645 A2 EP0457645 A2 EP 0457645A2 EP 91401168 A EP91401168 A EP 91401168A EP 91401168 A EP91401168 A EP 91401168A EP 0457645 A2 EP0457645 A2 EP 0457645A2
Authority
EP
European Patent Office
Prior art keywords
reflector
tongues
radiation
heat radiation
cup
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
EP91401168A
Other languages
English (en)
French (fr)
Other versions
EP0457645B1 (de
EP0457645A3 (en
Inventor
Francis David
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.)
Individual
Original Assignee
Individual
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 FR909006026A external-priority patent/FR2662235B1/fr
Priority claimed from FR9104291A external-priority patent/FR2675239B1/fr
Application filed by Individual filed Critical Individual
Publication of EP0457645A2 publication Critical patent/EP0457645A2/de
Publication of EP0457645A3 publication Critical patent/EP0457645A3/fr
Application granted granted Critical
Publication of EP0457645B1 publication Critical patent/EP0457645B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/04—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out infrared radiation
    • 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
    • F21V17/06—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the lampholder
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0005—Fastening of light sources or lamp holders of sources having contact pins, wires or blades, e.g. pinch sealed lamp
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/15—Thermal insulation
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/505—Cooling arrangements characterised by the adaptation for cooling of specific components 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/10—Construction
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material

Definitions

  • the lighting devices include a reflector, the geometric shape of which is defined as a function of the shape of the desired light beam.
  • These reflectors reflect all of the radiation emitted by the bulb and therefore including the heat radiation, so that one obtains, along the axis of the reflector, a distribution curve of the reflected heat radiation which corresponds, in its shape, to that of reflected visible radiation.
  • dichroic reflector lighting devices established so as to reflect, towards the front of the reflector, the light radiation coming from the bulb and, on the contrary, to be let through by the heat radiation.
  • the external face of the reflector is of a structure such that it returns the heat radiation towards the interior of the reflector according to a particular distribution curve different from that of the light radiation reflected by the internal face.
  • the reflecting structure of the external face of the reflector is obtained by depositing a reflecting material such as a metallization, which thus forms an integral part of the transparent support of the reflecting material for visible radiation.
  • the present invention aims in particular to remedy these drawbacks and for this purpose relates to a lighting device comprising a light bulb arranged inside a reflector made of transparent material and having a selective reflecting surface capable of reflect the visible radiation from the bulb while allowing heat radiation to pass through it, while on the external side of this reflector there is provided a reflecting surface for the heat radiation passing through the reflector, device characterized in that the reflecting surface for heat radiation is carried out on a support piece arranged outside the reflector.
  • the support part is metallic.
  • the cup is made in one piece from a flat metal plate, one of the faces of which is provided with a reflective coating, this plate then being arched in the shape of the cup.
  • the present invention therefore aims to achieve a lighting device which avoids, simply and inexpensively, overheating of the interior of the lighting device and in particular of the bulb which can thus operate under normal temperature conditions and, therefore, without alteration.
  • This device also makes it possible to reduce the pronounced undesirable thermal effects on objects or people lit by this device, while promoting and standardizing the thermal diffusion on the side of the reflector opposite to the lit side.
  • the device shown in Figure 1 thus schematically comprises a reflector 1 and a light bulb 2 which is fixed to the focus of this reflector on its base 3.
  • the pins 21 of this bulb protrude from the base and are intended to be connected to a corresponding female plug.
  • the reflector 1 constitutes first of all a dichroic reflector insofar as it is made of transparent material and that it comprises, in general on its internal face, a selective reflective coating 4, which reflects visible radiation but which can be passed through by infrared heat radiation.
  • the visible radiation from the bulb is thus reflected towards the front of the reflector along rays 4 ownership and is reflected by a light beam whose distribution curve 5 ( Figure 2) is defined by the shape of the reflective surface 4 of the reflector 1.
  • a support piece 6 provided, on its internal face, with a reflecting surface 6 for the heat radiation, so that this radiation, which passes through the dichroic reflector, is partly diffused by the support 6 constituting a heat exchanger and is partly reflected by this support surface 6 and to pass through the reflector again 1 and produce towards the front of this reflector, reflected rays 61 whose direction is different from that of the reflected light rays 41.
  • This different direction of the spokes 61 results from the different position of the surface 6 relative to the surface 4, taking into account the position of the filament of the bulb 2.
  • This direction of the rays 61 results in a distribution of the heat radiation 7 (FIG. 2) which is different from that of the visible radiation 5.
  • This distribution curve will thus be spread over a large area in front of and near the lighting device, so as to avoid undesirable thermal effects on people and illuminated objects, while of course avoiding overheating of the elements situated towards the rear of the reflector.
  • the reflecting surface of the support 6 can be frosted in order to increase the diffusion of the reflected visible radiation.
  • this reflecting surface 8 is produced on the internal face of a support piece 9 in the form of a cup arranged in the immediate vicinity of the external face of the reflector 1.
  • This reflecting surface 8 is constituted either by a metallization of the internal face of a support part 9 made of plastic, or by the polished or frosted reflecting internal face of a part 9 made of metal.
  • This piece whose shape corresponds or not to that of the dichroic reflector, has in its center an opening or a housing of dimensions such that it can receive the base 3 of the dichroic reflector.
  • the reflective support piece 9, constituting both a heat shield and a heat exchanger, is provided with an axial tip 10 ending in an internal flange 101.
  • This rim hangs on the plug 11 comprising the female pins 12 on which the male pins 21 of the bulb 2 come to be sealed in the base 3 of the reflector 1.
  • This arrangement allows the replacement of the bulb 2 and of the reflector 1 while keeping in the lighting device the reflector 9 which is automatically positioned with respect to the bulb 2 and to the reflector 1 when this bulb is placed on the plug 11.
  • the axial end piece 10 in the form of lugs provided with its flange 101, will hang on a staple surrounding the plug 11.
  • This support piece 9 may also, instead of being supported by the plug 11, be supported by the base 3 of the reflector 1 or by this reflector.
  • the support part 1 may be fixed by its internal surface against the external face of the reflector 1.
  • the reflector 1 will, in this case, be obtained by overmolding on the support 9.
  • the present invention will find all its interest insofar as the lighting device is of a simple and inexpensive realization and insofar as its assembly is carried out quickly by automatically positioning the external reflector for the heat radiation on the internal reflector for visible radiation.
  • the cup 9 forming a heat shield and a heat exchanger is produced by cutting a flat plate, preferably made of metal, which is previously coated on one of its faces, with a reflective material.
  • This reflecting flat plate is cut to form radial tongues 13, for example four in number, regularly distributed around the periphery of a central part 14. These tongues 13 are cut so that by bending, the shape of the cup 9 is obtained , the edges of the tongues coming to juxtapose each other and against the edge of the central part 14.
  • the cutting and bending are carried out so as to form between the tongues narrow openings in the form of slits resulting, as shown in 91 in Figure 1, from the non-joined assembly of the cut edges .
  • This arrangement will promote the cooling of the lamp by allowing the establishment of convection currents as well as promoting the decorative effect.
  • the cut tabs 13 are subjected to a bending of relatively small amplitude which does not modify the structure of the reflecting surface, which allows to use as starting material a metal plate previously provided with a reflecting surface in order to considerably reduce the manufacturing cost of this reflector.
  • tongues 15 and 16 form two pairs of tongues, the tongues of each pair being parallel and opposite, while the tongues of one pair are perpendicular to the tongues of the other pair.
  • the tongues 15 of one of the pairs are of a length such that after folding they are applied by their ends 151, possibly laterally to the base 3, but above all substantially vertically against the opposite face 111 of the base of the connection plug 11.
  • the two other parallel and opposite tongues 16 are of a shorter length and have the sole function of clamping effectively, due to their shorter length, against the side wall of the base 3 in order to ensure centering. of the cup 9, while the longer tongues 15 mainly have the function of ensuring the axial positioning of the reflector 9 by pushing it axially towards the reflector 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Substances (AREA)
  • Control Of Eletrric Generators (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Seal Device For Vehicle (AREA)
  • Vehicle Body Suspensions (AREA)
  • Polarising Elements (AREA)
EP91401168A 1990-05-15 1991-05-03 Beleuchtungsvorrichtung Expired - Lifetime EP0457645B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9006026 1990-05-15
FR909006026A FR2662235B1 (fr) 1990-05-15 1990-05-15 Dispositif d'eclairage comportant une ampoule d'eclairage disposee a l'interieur d'un reflecteur.
FR9104291A FR2675239B1 (fr) 1991-04-09 1991-04-09 Dispositif d'eclairage a bouclier thermique.
FR9104291 1991-04-09

Publications (3)

Publication Number Publication Date
EP0457645A2 true EP0457645A2 (de) 1991-11-21
EP0457645A3 EP0457645A3 (en) 1992-02-26
EP0457645B1 EP0457645B1 (de) 1994-07-13

Family

ID=26228019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401168A Expired - Lifetime EP0457645B1 (de) 1990-05-15 1991-05-03 Beleuchtungsvorrichtung

Country Status (6)

Country Link
US (1) US5130913A (de)
EP (1) EP0457645B1 (de)
JP (1) JPH04229503A (de)
AT (1) ATE108532T1 (de)
CA (1) CA2041906A1 (de)
DE (1) DE69102819T2 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0981010A1 (de) * 1998-08-19 2000-02-23 Thorn Europhane Reflektor für eine Leuchte, insbesondere für Strassenbeleuchtung
EP1826479A3 (de) * 2006-02-28 2008-03-19 Ushiodenki Kabushiki Kaisha Lichtquellenvorrichtung
WO2010049288A1 (de) * 2008-10-28 2010-05-06 Osram Gesellschaft mit beschränkter Haftung Reflektorlampe
EP3290789A1 (de) * 2016-08-30 2018-03-07 GE Lighting Solutions, LLC Leuchte mit einer wärmeableitungsstruktur

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5798611A (en) * 1990-10-25 1998-08-25 Fusion Lighting, Inc. Lamp having controllable spectrum
US6020676A (en) * 1992-04-13 2000-02-01 Fusion Lighting, Inc. Lamp with light reflection back into bulb
US5323301A (en) * 1992-12-08 1994-06-21 Robert Kaufman Dimmable studio lighting device
US5535110A (en) * 1995-02-16 1996-07-09 Cooper Industries, Inc. Ceiling mounted wallwash light fixture
US6291936B1 (en) 1996-05-31 2001-09-18 Fusion Lighting, Inc. Discharge lamp with reflective jacket
PL331378A1 (en) * 1996-05-31 1999-07-05 Fusion Lighting Multiple-reflection electrode-free sulphur- or selenium-filled lamp and method of generating radiation using such lamp
US5873650A (en) * 1996-11-19 1999-02-23 Luk; John F. Modular heat sink adapter for lamp bases
US6082878A (en) * 1998-02-03 2000-07-04 Cooper Industries, Inc. Fully rotatable recessed light fixture with movable stop and adjustable length bar hanger
US6227682B1 (en) 2000-03-22 2001-05-08 Cogent Light Technologies, Inc. Coupling of light from a small light source for projection systems using parabolic reflectors
MXPA03006835A (es) 2001-02-05 2004-05-14 Wavien Inc Propulsor de iluminacion para una pantalla de visualizacion de proyeccion usando un conducto conico de flujo luminoso.
US6856727B2 (en) * 2001-03-02 2005-02-15 Wavien, Inc. Coupling of light from a non-circular light source
US6926435B2 (en) * 2001-08-23 2005-08-09 Wavien, Inc. Led illumination engine using a reflector
US20040264201A1 (en) * 2003-06-30 2004-12-30 Guide Corporation, A Delaware Corporation Chromatic effect using light sources and condensing lenses
US20050247842A1 (en) * 2004-05-10 2005-11-10 Grzegorz Wronski Hanger bar assemblies for recessed luminaires
US9696021B2 (en) 2004-03-25 2017-07-04 Cooper Technologies Company Hanger bar for recessed luminaires
US7673841B2 (en) 2004-03-25 2010-03-09 Cooper Technologies Company Hangar bar for recessed luminaires with integral nail
US20070019421A1 (en) * 2005-07-12 2007-01-25 Kregness Christopher A Removable, multi-purpose utility light for motor vehicles
US20090080189A1 (en) 2007-09-21 2009-03-26 Cooper Technologies Company Optic Coupler for Light Emitting Diode Fixture
US8596837B1 (en) 2009-07-21 2013-12-03 Cooper Technologies Company Systems, methods, and devices providing a quick-release mechanism for a modular LED light engine
US8567987B2 (en) 2009-07-21 2013-10-29 Cooper Technologies Company Interfacing a light emitting diode (LED) module to a heat sink assembly, a light reflector and electrical circuits
US9060607B1 (en) 2012-10-17 2015-06-23 Cooper Technologies Company Hanger bar for recessed light fixture mounting
US8939418B2 (en) 2013-04-05 2015-01-27 Cooper Technologies Company Adjustable hanger bar for luminaires
US9732904B1 (en) 2015-06-05 2017-08-15 Cooper Technologies Company Adjustable hanger bar assembly for luminaires
US9239131B1 (en) 2015-06-05 2016-01-19 Cooper Technologies Company Adjustable hanger bars with detachment stop
US10584837B2 (en) 2016-10-28 2020-03-10 Cordelia Lighting, Inc. Bar hanger system for recessed fixtures

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US1735181A (en) * 1927-03-30 1929-11-12 Lambert L Raymond Reflector-attaching device
US3322946A (en) * 1964-11-27 1967-05-30 George D Cooper Reflector for reflecting color corrected light and heat
US3654455A (en) * 1969-08-20 1972-04-04 Holophane Co Inc Luminaire
US3745325A (en) * 1971-08-17 1973-07-10 Eastman Kodak Co Photographic light
US3769503A (en) * 1972-06-23 1973-10-30 Gen Electric Lamp fixture having dichoric filter arrangement for selectively directing heat and light
FR2192272B1 (de) * 1972-07-11 1975-03-07 Cibie Projecteurs
US4028542A (en) * 1974-09-11 1977-06-07 Esquire, Inc. Faceted parabolic-type reflector system
DE2713615A1 (de) * 1977-03-28 1978-10-05 Patra Patent Treuhand Baueinheit aus halogengluehlampe und reflektor
FR2484720A1 (fr) * 1980-06-13 1981-12-18 David Francis Systeme de douille transformatrice a culot standard pour la conversion des luminaires
JPS6217904A (ja) * 1985-07-15 1987-01-26 双葉電子工業株式会社 光源
DE9002879U1 (de) * 1990-03-14 1990-05-17 Nafa-Light Kurt Maurer, Zumikon Leuchte

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0981010A1 (de) * 1998-08-19 2000-02-23 Thorn Europhane Reflektor für eine Leuchte, insbesondere für Strassenbeleuchtung
FR2782551A1 (fr) * 1998-08-19 2000-02-25 Thorn Europhane Sa Reflecteur de luminaire d'eclairage notamment pour voie publique
EP1826479A3 (de) * 2006-02-28 2008-03-19 Ushiodenki Kabushiki Kaisha Lichtquellenvorrichtung
US7733001B2 (en) 2006-02-28 2010-06-08 Ushiodenki Kabushiki Kaisha Light source device
WO2010049288A1 (de) * 2008-10-28 2010-05-06 Osram Gesellschaft mit beschränkter Haftung Reflektorlampe
EP3290789A1 (de) * 2016-08-30 2018-03-07 GE Lighting Solutions, LLC Leuchte mit einer wärmeableitungsstruktur
US11134618B2 (en) 2016-08-30 2021-10-05 Current Lighting Solutions, Llc Luminaire including a heat dissipation structure

Also Published As

Publication number Publication date
DE69102819T2 (de) 1995-02-23
JPH04229503A (ja) 1992-08-19
EP0457645B1 (de) 1994-07-13
ATE108532T1 (de) 1994-07-15
DE69102819D1 (de) 1994-08-18
EP0457645A3 (en) 1992-02-26
US5130913A (en) 1992-07-14
CA2041906A1 (fr) 1991-11-16

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