EP0396504A1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
EP0396504A1
EP0396504A1 EP90810324A EP90810324A EP0396504A1 EP 0396504 A1 EP0396504 A1 EP 0396504A1 EP 90810324 A EP90810324 A EP 90810324A EP 90810324 A EP90810324 A EP 90810324A EP 0396504 A1 EP0396504 A1 EP 0396504A1
Authority
EP
European Patent Office
Prior art keywords
holder
profile part
reflector shell
opening
light bulb
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
EP90810324A
Other languages
German (de)
English (en)
Other versions
EP0396504B1 (fr
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.)
Nafa Light Kurt Maurer
Original Assignee
Nafa Light Kurt Maurer
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6838884&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0396504(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Nafa Light Kurt Maurer filed Critical Nafa Light Kurt Maurer
Publication of EP0396504A1 publication Critical patent/EP0396504A1/fr
Application granted granted Critical
Publication of EP0396504B1 publication Critical patent/EP0396504B1/fr
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
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/104—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening using feather joints, e.g. tongues and grooves, with or without friction
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing

Definitions

  • the invention relates to a lamp according to the preamble of claim 1, in particular a halogen lamp.
  • halogen lamps of this type known from practice, a massive holder for the bulb holder and the reflector shell arranged at a distance in front of it are provided.
  • the diameter of the opening of the reflector shell is a small tolerance larger than the diameter of the cylindrical halogen light bulb, so that it can just be pushed through the opening or the reflector shell can be pushed over the light bulb and screwed onto the holder and, if possible, the entire radiation of the light bulb from the reflector shell is reflected to the front and no heat (heat radiation, heated air) gets back from the light bulb.
  • a holder in the form of a pot which is open at the bottom, in a cylindrical housing closed by a conical roof part, to the bottom of which the bulb socket (the bulb socket) is attached.
  • the frame carrier is axially displaceably mounted in the housing by means of a threaded ring.
  • a glass reflector is held on the conical roof part by means of screws and mounting springs.
  • the reflector shell has an opening, the diameter of which is a small tolerance larger than the diameter of the head of the light bulb, so that the light bulb head can be moved straight through the opening with the aid of the axially displaceable holder.
  • Luminaires of other types without a reflector are also known from US-A-3,694,649, US-A-1,825,641 and FR-A-1,021,604.
  • halogen lights which are usually operated with a voltage of 12 volts and 50 to 75 watts of power, have lifetimes that are far from the lifespan that you could actually expect from halogen lights.
  • the invention has for its object to extend the life of the lights.
  • the solution to the problem according to the invention is the subject of claim 1. It is based on the knowledge that the reduced service life is caused by a heat build-up occurring in the area of the halogen bulb socket (on the halogen bulb base or base).
  • the invention teaches to increase the cross section of the opening of the reflector shell to a multiple of the light bulb cross-section, so that between the light bulb and the opening edge of the reflector shell a wide annular gap is free for air passage, the bracket for forming an air passage space to the rear and / or run open to the side and keep the bulb holder free in the air passage space adjoining the annular gap by the holder, so that the air stream flowing through the annular gap flows around the bulb holder.
  • the invention therefore teaches the opposite of what has been done so far: not to prevent light and heat radiation (and heated air) from coming back from the light bulb, but - while accepting a greater amount of light and heat reflection - that the light bulb warms up
  • the invention makes use of the fact that the air heated by the light bulb is warmer than the ambient air but significantly colder than the temperature of 120 ° C., which is still uncritical for the life of the halogen bulb, and that the cooling of the light bulb holder thus achieved is due to the enlargement the opening, increased warming of the socket predominates due to the heat radiation of the light bulb radiated backwards through the opening onto the socket.
  • the light bulb holder is kept free in the air passage space, which is preferably completely open at the top and largely open on the side, so that the air flows around it. If the socket were arranged on the bottom of a pot-shaped holder, as in the lamp known from DE-A-37 10 147, heat would build up in it and the socket would be heated even more than usual with an enlarged reflector shell opening due to the increased heat reflection of the light bulb Halogen lights.
  • the lamp has a hemispherical reflector shell 1 made of metal with a large opening 2 obtained by separating a spherical cap or spherical cap.
  • the reflector shell 1 and the socket 3 of a halogen light bulb 4, the power supply lines of which are designated by 5, are made up of one of two U-profile parts 6 , 7 existing bracket worn.
  • the first U-profile part 6 is attached to the back of the reflector shell 1.
  • it has in its web 8 a hole adapted to the opening 2 of the reflector shell 1 and the opening edge 9 of the reflector shell 1 is flanged around the edge of the hole.
  • An elongated hole 12 running parallel to the axis 11 of the reflector shell 1 and the side edges of the legs 10 is formed in each of the two legs 10 of the first U-profile part 6 which extend to the rear.
  • the bulb socket 3 is fastened on the web 13 of the second U-profile part 7 on the side facing away from the reflector shell 1.
  • the web 13 has a through opening 14 for the halogen bulb neck in the center, the diameter of which is correspondingly large and is matched to the size of the holder 3.
  • the two legs 15 of the second U-profile part 7 lie on the inner sides of the legs 10 of the first U-profile part 6 and, depending on the outside, projecting lugs 16 engaging in the elongated holes 12 and threaded bores for engaging screws 17 through the elongated holes 12 reach through and firmly connect the U-profile part 7 to the legs 10.
  • the two legs 15 are slidably mounted in the two elongated holes 12 and can be fixed in the desired position on the edges of the elongated holes, so that the insertion depth of the halogen bulb 4 can be set in the reflector shell 1 according to requirements.
  • the lugs 16 and screws 17 are arranged axially one behind the other, which results in parallel guidance of the second U-profile part 7 when moving along the elongated holes 12 and it is ensured that the axis of the halogen bulb 4 remains in the axis 11 of the reflector shell 1.
  • the legs 10 of the first U-profile part 6 each have two mutually opposite recesses 18 in the vicinity of their rear ends, on which the bracket of the reflector shell 1 and socket 3 formed by the two U-profile parts 6, 7 are suspended from a suitable suspension can.
  • Retaining springs for example, can be attached to the cutouts 18, with which the holder can be arranged in a lamp frame or housing.
  • the reflector shell 1 and the two U-profile parts 6, 7 are preferably made of aluminum.
  • the hemispherical reflector shell 1 has a diameter of 60 to 65 mm.
  • a spherical cap or spherical cap is separated from it at a height of 2 to 4 mm, as a result of which the opening 2 of approximately 20 mm in diameter is formed, through which the cylindrical halogen bulb 4, which has a diameter of approximately 10 mm, projects.
  • the diameter of the opening 2 is therefore approximately twice as large as the diameter of the (cylindrical) halogen bulb 4; the cross-section (the cross-sectional area) of the opening 2 is therefore approximately four times and the cross-section of the annular gap 21 formed between the halogen bulb 4 and the opening edge 2 of the reflector shell 1 is approximately three times the cross-section of the halogen bulb.
  • the cross section of the opening 2 could also be another multiple of the halogen bulb cross section, for example only twice or more than four times, a wide annular gap 21 being essential for cooling the socket 3 and therefore at least approximately four times being preferred.
  • the cross section of the opening 2 (that is to say the area enclosed by the edge 9) is to be selected many times larger than the largest cross-sectional area of the light bulb head part, which reaches the area of the opening 2 when the U-profile part 7 is axially displaced .
  • the socket 3 can also be arranged immovably (stationary) in the holder 6, 7, in which case the cross section of the opening 2 is at least twice, preferably at least four times as large as the cross section of the part of the light bulb located in the area of the opening is to be selected.
  • the socket 3 is carried completely freely in the center of the bracket consisting of only the two U-profile parts 6, 7 by the web 13 in the air passage space 22 formed between the two legs 10.
  • the air passage space 22, into which the wide annular gap 21 opens for the passage of air, is completely open at the top and only laterally delimited by the two legs 10, that is to say also completely open on the two sides lying in between and - since the distance between the legs 10 is greater than the diameter the opening 2 is widened radially outwards with respect to the annular gap 21.
  • the light bulb holder 3 which is carried freely in the air passage space 22, is flowed around by the air, which is heated by the light bulb 4 in the reflector space 20 and rises through the wide annular gap 21, and is thereby cooled. (If the luminaire is not directed downwards but upwards, the air flow is reversed).
  • the air heated from the base (base) of the halogen bulb or socket 3 is exchanged with the rising air. It has been shown that the base of the halogen bulb 4 in the socket 3 in the arrangement described is not, or in any case not significantly above 120 ° C., despite the heating due to the heat radiation reflected by the opening from the head of the bulb 4 in the reflector shell 1 warmed.
  • the ventilation effect and cooling is of course particularly effective and intensive when the lamp hangs vertically. However, a good effect is also achieved in other locations.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Liquid Crystal Substances (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Lasers (AREA)
EP90810324A 1989-05-02 1990-04-25 Dispositif d'éclairage Expired - Lifetime EP0396504B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8905535U DE8905535U1 (fr) 1989-05-02 1989-05-02
DE8905535U 1989-05-02

Publications (2)

Publication Number Publication Date
EP0396504A1 true EP0396504A1 (fr) 1990-11-07
EP0396504B1 EP0396504B1 (fr) 1994-12-07

Family

ID=6838884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810324A Expired - Lifetime EP0396504B1 (fr) 1989-05-02 1990-04-25 Dispositif d'éclairage

Country Status (9)

Country Link
US (1) US5032966A (fr)
EP (1) EP0396504B1 (fr)
JP (1) JPH03149702A (fr)
AT (1) ATE115258T1 (fr)
CA (1) CA2015878A1 (fr)
DE (3) DE8905535U1 (fr)
DK (1) DK0396504T3 (fr)
ES (1) ES2065513T3 (fr)
GR (1) GR3015325T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560216A1 (fr) * 1992-03-11 1993-09-15 ZUMTOBEL LICHT GmbH Réglage au foyer d'une source lumineuse dans un boîtier d'éclairage
ITMI20090479A1 (it) * 2009-03-26 2010-09-27 Fivep S P A Involucro di apparecchio di illuminazione

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4323991C2 (de) * 1993-07-17 2002-07-18 Bosch Gmbh Robert Kraftfahrzeugscheinwerfer mit einem Reflektor und mindestens einer in den Reflektor eingesetzten Lichtquelle
US5622418A (en) * 1994-03-29 1997-04-22 Mitsubishi Denki Kabuskiki Kaisha Projection display device
US5707140A (en) * 1995-03-28 1998-01-13 Chen; Wen-Tsung Structure of lamp shade for halogen lamps
AT3839U1 (de) * 1999-04-07 2000-08-25 Zizala Lichtsysteme Gmbh Kfz-scheinwerfer
JP2001260965A (ja) * 2000-03-17 2001-09-26 Honda Motor Co Ltd 透明または半透明な車体カバーを有する車両
FR2843442B1 (fr) * 2002-08-08 2004-11-26 Valeo Vision Dispositif reflecteur pour projecteur de vehicule automobile
US20070147095A1 (en) * 2005-11-22 2007-06-28 Rajiam Pursifull Light reflector socket device
US7625105B1 (en) * 2007-09-18 2009-12-01 Genlyte Thomas Group, Llc Relamping cartridge assembly
CN103185232B (zh) * 2011-12-29 2015-07-08 海洋王照明科技股份有限公司 筒灯

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1637786A (en) * 1926-02-15 1927-08-02 Luxe Lamp Mfg Co De Incandescent-lamp structure
US1825641A (en) * 1927-10-15 1931-09-29 John M Cole Socket support for lighting fixtures
FR2073653A5 (fr) * 1969-12-12 1971-10-01 Bosch
US3684883A (en) * 1970-09-24 1972-08-15 Olive Entwistle Lamphead for tungsten-halogen lamps
US3694649A (en) * 1970-07-22 1972-09-26 Gen Electric Lamp support device
US3703635A (en) * 1970-09-08 1972-11-21 E Systems Inc Zoom light
US3711702A (en) * 1970-11-02 1973-01-16 T Adra Heavy duty floodlight
US3843879A (en) * 1973-02-12 1974-10-22 Christie Electric Corp Cooling system for xenon arc lamps

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2095353A (en) * 1936-05-16 1937-10-12 Arthur H White Lighting fixture
US2673287A (en) * 1950-05-12 1954-03-23 Wheeler Reflector Company Multiple street lighting fixture having an adjustable socket support
US4363086A (en) * 1977-10-05 1982-12-07 General Electric Company Luminaire

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1637786A (en) * 1926-02-15 1927-08-02 Luxe Lamp Mfg Co De Incandescent-lamp structure
US1825641A (en) * 1927-10-15 1931-09-29 John M Cole Socket support for lighting fixtures
FR2073653A5 (fr) * 1969-12-12 1971-10-01 Bosch
US3694649A (en) * 1970-07-22 1972-09-26 Gen Electric Lamp support device
US3703635A (en) * 1970-09-08 1972-11-21 E Systems Inc Zoom light
US3684883A (en) * 1970-09-24 1972-08-15 Olive Entwistle Lamphead for tungsten-halogen lamps
US3711702A (en) * 1970-11-02 1973-01-16 T Adra Heavy duty floodlight
US3843879A (en) * 1973-02-12 1974-10-22 Christie Electric Corp Cooling system for xenon arc lamps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560216A1 (fr) * 1992-03-11 1993-09-15 ZUMTOBEL LICHT GmbH Réglage au foyer d'une source lumineuse dans un boîtier d'éclairage
ITMI20090479A1 (it) * 2009-03-26 2010-09-27 Fivep S P A Involucro di apparecchio di illuminazione

Also Published As

Publication number Publication date
ES2065513T3 (es) 1995-02-16
DK0396504T3 (da) 1995-04-24
EP0396504B1 (fr) 1994-12-07
DE9007795U1 (de) 1996-05-23
US5032966A (en) 1991-07-16
JPH03149702A (ja) 1991-06-26
GR3015325T3 (en) 1995-06-30
CA2015878A1 (fr) 1990-11-02
ATE115258T1 (de) 1994-12-15
DE59007905D1 (de) 1995-01-19
DE8905535U1 (fr) 1989-06-29

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